Subchapter O—Certain Bulk Dangerous Cargoes

SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES

PART 150—COMPATIBILITY OF 46 CFR part or section Current OMB CARGOES where identified or described control No. § 150.01–15 ...... 1625–0007 Sec. § 153.5 ...... 1625–0007 150.105 OMB control numbers assigned pur- § 153.905 ...... 1625–0094 suant to the Paperwork Reduction Act. § 153.910 ...... 1625–0094 § 153.968 ...... 1625–0094 150.110 Applicability. Part 154 ...... 1625–0029 150.115 Definitions. § 154.12 ...... 1625–0007 150.120 Definition of incompatible cargoes. 150.130 Loading a cargo on vessels carrying cargoes with which it is incompatible. [49 FR 38121, Sept. 27, 1984, as amended by 150.140 Cargoes not listed in Table I or II. CGD 77–069, 52 FR 31626, Aug. 21, 1987; USCG– 2004–18884, 69 FR 58349, Sept. 30, 2004] 150.150 Exceptions to the compatibility chart. 150.160 Carrying a cargo as an exception to § 150.110 Applicability. the compatibility chart. This subpart prescribes rules for 150.170 Right of appeal. identifying incompatible hazardous FIGURE I TO PART 150—COMPATIBILITY CHART materials and rules for carrying these TABLE I TO PART 150—ALPHABETICAL LIST OF materials in bulk as cargo in perma- CARGOES nently attached tanks or in tanks that TABLE II TO PART 150—GROUPING OF CARGOES are loaded or discharged while aboard APPENDIX I TO PART 150—EXCEPTIONS TO THE the vessel. The rules apply to all ves- CHART sels that carry liquid dangerous car- APPENDIX II TO PART 150—EXPLANATION OF goes in bulk that are subject to 46 FIGURE 1 APPENDIX III TO PART 150—TESTING PROCE- U.S.C. Chapter 37. DURES FOR DETERMINING EXCEPTIONS TO [CGD 95–028, 62 FR 51209, Sept. 30, 1997] THE CHART APPENDIX IV TO PART 150—DATA SHEET § 150.115 Definitions. AUTHORITY: 46 U.S.C. 3306, 3703; Depart- As used in this subpart: Hazardous ment of Homeland Security Delegation No. 0170.1. Section 150.105 issued under 44 U.S.C. material means: 3507; Department of Homeland Security Dele- (a) A flammable liquid as defined in gation No. 0170.1. § 30.10–22 or a combustible liquid as defined in § 30.10–15 of this chapter; SOURCE: CGD 75–59, 45 FR 70263, Oct. 23, 1980, unless otherwise noted. (b) A material listed in Table 151.05, Table 1 of part 153, or Table 4 of part § 150.105 OMB control numbers as- 154 of this chapter; or signed pursuant to the Paperwork (c) A liquid, liquefied gas, or com- Reduction Act. pressed gas listed in 49 CFR 172.101. (a) Purpose. This section collects and Person in charge means the master of displays the control numbers assigned a self-propelled vessel, or the person in to information collection and record- charge of a barge. keeping requirements in this subchapter by the Office of Management § 150.120 Definition of incompatible and Budget (OMB) pursuant to the Pa- cargoes. perwork Reduction Act of 1980 (44 Except as described in § 150.150, a U.S.C. 3501 et seq.). The Coast Guard cargo of hazardous material is incom- intends that this section comply with patible with another cargo listed in the requirements of 44 U.S.C. 3507(f) Table I if the chemical groups of the which requires that agencies display a two cargoes have an ‘‘X’’ where their current control number assigned by the columns intersect in Figure 1 and are Director of the OMB for each approved not shown as exceptions in Appendix I. agency information collection require- (See also § 150.140.) ment. (b) Display. [CGD 83–047, 50 FR 33038, Aug. 16, 1985]

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§ 150.130 Loading a cargo on vessels § 150.150 Exceptions to the compat- carrying cargoes with which it is ibility chart. incompatible. The Commandant (G-MSO) author- Except as described in § 150.160, the izes, on a case by case basis, exceptions person in charge of a vessel shall en- to the rules in this subpart under the sure that the containment system for a following conditions: cargo that is a hazardous material meets the following requirements: (a) When two cargoes shown to be in- (a) The containment system must compatible in Figure 1 meet the stand- separate the hazardous material or its ards for a compatible pair in Appendix residue from any cargo in table I with III, or which it is incompatible by two bar- (b) When two cargoes shown to be riers such as formed by a: compatible in Figure 1 meet the stand- (1) Cofferdam; ards for an incompatible pair in Appen- (2) Empty tank; dix III. (3) Void space; Appendix I contains cargoes which (4) Cargo handling space; have been found to be exceptions to (5) Tank containing a compatible Figure 1, the Compatibility Chart. cargo; or (6) Piping tunnel. [CGD 83–047, 50 FR 33038, Aug. 16, 1985, as (b) In this subpart, isolation across a amended at CGD 95–072, 60 FR 50465, Sept. 29, cruciform joint is equivalent to isola- 1995; CGD 96–041, 61 FR 50731, Sept. 27, 1996] tion by two barriers. (c) The containment system for the § 150.160 Carrying a cargo as an excep- hazardous material must not have a tion to the compatibility chart. piping or venting system that connects The Operator of a vessel having on to a containment system carrying a board a cargo carried as an exception cargo with which the hazardous mate- under § 150.150 but not listed in Appen- rial is incompatible. Any such piping dix I, Exceptions to the Chart, shall or venting system must have been sep- make sure that: arated from the containment system (a) The Commandant (G-MSO) has carrying the incompatible cargo by: authorized by letter or message the (1) Removing a valve or spool piece cargo pair as an exception to the com- and blanking off the exposed pipe ends, patibility chart; and or (2) Installing two spectacle flanges in (b) A copy of the letter or message is series with a means of detecting leak- on the vessel. age into the pipe between the spectacle [CGD 75–59, 45 FR 70263, Oct. 23, 1980, as flanges. amended by CGD 82–063b, 48 FR 4781, Feb. 3, 1983; CGD 83–047, 50 FR 33038, Aug. 16, 1985; § 150.140 Cargoes not listed in Table I CGD 95–072, 60 FR 50465, Sept. 29, 19955; CGD or II. 96–041, 61 FR 50731, Sept. 27, 1996] A cargo of hazardous material not listed in Table I or II must be handled § 150.170 Right of appeal. as if incompatible with all other car- Any person directly affected by a de- goes until the Commandant (G-MSO) cision or action taken under this part, (tel. no. (202) 372–1425) assigns the haz- by or on behalf of the Coast Guard, ardous material to a compatibility may appeal therefrom in accordance group. (Table I lists cargoes alphabeti- cally while Table II lists cargoes by with subpart 1.03 of this chapter. compatibility group). [CGD 88–033, 54 FR 50381, Dec. 6, 1989] [CGD 83–047, 50 FR 33038, Aug. 16, 1985, CGD 86–100, 52 FR 21037, June 4, 1987; CGD 95–072, 60 FR 50465, Sept. 29, 19955; CGD 96–041, 61 FR 50731, Sept. 27, 1996; USCG–2006–25697, 71 FR 55746, Sept. 25, 2006]

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FIGURE 1 TO PART 150—COMPATIBILITY CHART

TABLE I TO PART 150—ALPHABETICAL LIST OF CARGOES

Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Acetaldehyde ...... 19 ...... AAD Acetic acid ...... 4 2 AAC Acetic anhydride ...... 11 ...... ACA Acetochlor ...... 10 ...... ACG Acetone ...... 18 2 ACT Acetone cyanohydrin ...... 0 1, 2 ACY Acetonitrile ...... 37 ...... ATN Acetophenone ...... 18 ...... ACP Acrolein ...... 19 2 ARL Acrylamide solution ...... 10 ...... AAM Acrylic acid ...... 4 2 ACR Acrylonitrile ...... 15 2 ACN Acrylonitrile-Styrene copolymer dispersion in Polyether polyol ...... 20 ...... ALE Adiponitrile ...... 37 ...... ADN Alachlor ...... 33 ...... ALH Alcohols (C13+) ...... 20 ...... ALY Including: Oleyl alcohol (octadecenol) Pentadecanol Tallow alcohol Tetradecanol Tridecanol Alcoholic beverages ...... 20 ...... Alcohol polyethoxylates ...... 20 ...... APU/APV/APW/AET

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Alcohol polyethoxylates, secondary ...... 20 ...... AEA/AEB Alkanes (C6-C9) ...... 31 1 ALK Including: Heptanes Hexanes Nonanes Octanes n-Alkanes (C10+) ...... 31 1 ALJ Including: Decanes Dodecanes Heptadecanes Tridecanes Undecanes iso- & cyclo-Alkanes (C10-C11) ...... 31 1 AKI iso- & cyclo-Alkanes (C12+) ...... 31 1 AKJ Alkane (C14-C17) sulfonic acid, sodium salt solution ...... 34 ...... AKA Alkaryl polyether (C9-C20) ...... 41 ...... AKP Alkenyl(C11+)amide ...... 11 ...... AKM Alkenyl(C16-C20)succinic anhydride ...... 11 ...... AAH Alkyl acrylate-Vinyl pyridine copolymer in Toluene ...... 32 AAP Alkyl(C8+)amine, Alkenyl (C12+) acid ester mixture ...... 34 ...... AAA Alkylaryl phosphate mixtures (more than 40% Diphenyl tolyl phosphate, 34 ...... APD less than 0.02% ortho-isomer). Alkyl(C3-C4)benzenes ...... 32 AKC Including: Butylbenzenes Cumene Propylbenzenes Alkyl(C5-C8)benzenes ...... 32 AKD Including: Amylbenzenes Heptylbenzenes Hexylbenzenes Octylbenzenes Alkyl(C9+)benzenes ...... 32 AKB Including: Decylbenzenes Dodecylbenzenes Nonylbenzenes Tetradecylbenzenes Tetrapropylbenzenes Tridecylbenzenes Undecylbenzenes Alkylbenzene, Alkylindane, Alkylindene mixture (each C12-C17) ...... 32 AIH Alkylbenzenesulfonic acid ...... 0 1, 2 ABS/ABN Alkylbenzenesulfonic acid, sodium salt solutions ...... 33 ...... ABT Alkyl dithiothiadiazole (C6-C24) ...... 33 ...... ADT Alkyl ester copolymer (C4-C20) ...... 34 ...... AES Alkyl(C7-C9) nitrates ...... 34 2 AKN ONE Alkyl(C7-C11) phenol poly(4-12)ethoxylate ...... 40 ...... APN Alkyl(C8-C40) phenol sulfide ...... 34 ...... AKS Alkyl(C8-C9) phenylamine in aromatic solvents ...... 9 ...... ALP Alkyl(C9-C15) phenyl propoxylate ...... 40 ...... Alkyl phthalates ...... 34 ...... Alkyl(C10-C20, saturated and unsaturated) phosphite ...... 34 ...... AKL Alkyl polyglucoside solutions ...... 43 ...... AGL/AGN/AGO/AGP/ AGM Alkyl sulfonic acid ester of phenol ...... 34 ...... Allyl alcohol ...... 15 2 ALA Allyl chloride ...... 15 1 ALC Aluminium chloride, Hydrochloric acid solution ...... 0 1 AHS Aluminum sulfate solution ...... 43 2 ASX ALM 2-(2-Aminoethoxy)ethanol ...... 8 ...... AEX Aminoethyldiethanolamine, Aminoethylethanolamine solution ...... 8 ...... Aminoethylethanolamine ...... 8 ...... AEE N-Aminoethylpiperazine ...... 7 ...... AEP 2-Amino-2-hydroxymethyl-1,3-propanediol solution ...... 43 ...... AHL 2-Amino-2-methyl-1-propanol ...... 8 ...... APQ APR Ammonia, anhydrous ...... 6 ...... AMA Ammonia, aqueous (28% or less Ammonia) (IMO cargo name), see Am- 6 ...... AMH monium hydroxide. Ammonium bisulfite solution ...... 43 2 ABX ASU

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Ammonium hydrogen phosphate solution ...... 0 1 AMI Ammonium hydroxide (28% or less Ammonia) ...... 6 ...... AMH Ammonium lignosulfonate solution, see also Lignin liquor ...... 43 ...... Ammonium nitrate solution ...... 0 1 ANR AND/AMN Ammonium nitrate, Urea solution (containing Ammonia) ...... 6 ...... UAS Ammonium nitrate, Urea solution (not containing Ammonia) ...... 43 ...... ANU UAT Ammonium polyphosphate solution ...... 43 ...... AMO APP Ammonium sulfate solution ...... 43 ...... AME AMS Ammonium sulfide solution ...... 5 ...... ASS ASF Ammonium thiocyanate, Ammonium thiosulfate solution ...... 0 1 ACS Ammonium thiosulfate solution ...... 43 ...... ATV ATF Amyl acetate ...... 34 ...... AEC IAT/AML/AAS/AYA Amyl alcohol ...... 20 ...... AAI IAA/AAN/ASE/APM Amylene, see Pentene ...... AMZ PTX tert-Amyl methyl ether (see also, Methyl tert-pentyl ether) ...... 41 ...... AYE Amyl methyl ketone, see Methyl amyl ketone ...... AMK MAK Aniline ...... 9 ...... ANL Animal and Fish oils, n.o.s...... 34 ...... AFN Including: Cod liver oil Lanolin Neatsfoot oil Pilchard oil Sperm oil Animal and Fish acid oils and distillates, n.o.s...... 34 ...... AFA Including: Animal acid oil Fish acid oil Lard acid oil Mixed acid oil Mixed general acid oil Mixed hard acid oil Mixed soft acid oil Anthracene oil (Coal tar fraction), see Coal tar ...... 33 ...... AHO COR Apple juice ...... 43 ...... Aryl polyolefin (C11-C50) ...... 30 ...... AYF Asphalt ...... 33 ...... ASP ACU Asphalt blending stocks, roofers flux ...... 33 ...... ARF Asphalt blending stocks, straight run residue ...... 33 ...... ASR Asphalt emulsion (ORIMULSION) ...... 33 ...... ASQ Aviation alkylates ...... 33 ...... AVA GAV Barium long chain alkaryl(C11-C50) sulfonate ...... 34 ...... BCA Barium long chain alkyl(C8-C14)phenate sulfide ...... 34 ...... BCH Behenyl alcohol ...... 20 ...... Benzene ...... 32 ...... BNZ Benzene hydrocarbon mixtures (having 10% Benzene or more) ...... 32 BHB BHA Benzenesulfonyl chloride ...... 0 1, 2 BSC Benzene, Toluene, Xylene mixtures ...... 32 2 BTX Benzene tricarboxylic acid, trioctyl ester ...... 34 ...... Benzylacetate ...... 34 ...... BZE Benzyl alcohol ...... 21 ...... BAL Benzyl chloride ...... 36 ...... BCL Brake fluid base mixtures ...... 20 ...... BFX Bromochloromethane ...... 36 ...... BCM Butadiene ...... 30 ...... BDI Butadiene, Butylene mixtures (cont. Acetylenes) ...... 30 ...... BBM Butane ...... 31 1 BMX IBT/BUT 1,4-Butanediol, see Butylene glycol ...... BDO BUG 2-Butanone, see Methyl ethyl ketone ...... Butene, see Butylene ...... IBL/BTN Butene oligomer ...... 30 ...... BOL Butyl acetate ...... 34 ...... BAX IBA/BCN/BTA/BYA Butyl acrylate ...... 14 1 BAR BAI/BTC Butyl alcohol ...... 20 2 BAY IAL/BAN/BAS/BAT Butylamine ...... 7 ...... BTY IAM/BAM/BTL/BUA Butylbenzene, see Alky(C3-C4)benzenes ...... 32 BBE AKC Butyl benzyl phthalate ...... 34 ...... BPH Butyl butyrate ...... 34 ...... BBA BUB/BIB Butylene ...... 30 ...... BTN IBL Butylene glycol ...... 20 2 BUG BDO 1,3-Butylene glycol, see Butylene glycol ...... BUG Butylene oxide ...... 16 1 BTO Butyl ether ...... 41 ...... BTE

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Butyl formate ...... 34 ...... BFI/BFN Butyl heptyl ketone ...... 18 ...... BHK Butyl methacrylate ...... 14 1 BMH BMI/BMN Butyl methacrylate, Decyl methacrylate, Cetyl-Eicosyl methacrylate mix- 14 1 DER ture. Butyl methyl ketone, see Methyl butyl ketone ...... MBK Butyl phenol, Formaldehyde resin in Xylene ...... 32 n-Butyl propionate ...... 34 ...... BPN Butyl stearate ...... 34 ...... Butyl toluene ...... 32 BUE Butyraldehyde ...... 19 ...... BAE BAD/BTR Butyric acid ...... 4 ...... BRA IBR gamma-Butyrolactone ...... 0 1, 2 BLA C9 Resinfeed (DSM) ...... 32 2 CNR Calcium alkyl(C9)phenol sulfide, polyolefin phosphorosulfide mixture ...... 34 ...... CPX Calcium alkyl salicylate, see Calcium long chain alkyl salicylate (C13+) ...... CAK Calcium bromide solution, see Drilling brines ...... DRB Calcium bromide, Zinc bromide solution, see Drilling brine (containing Zinc ...... DZB salts). Calcium carbonate slurry ...... 34 ...... Calcium chloride solution ...... 43 ...... CCS CLC Calcium hydroxide slurry ...... 5 ...... COH Calcium hypochlorite solutions ...... 5 ...... CHZ/CHU/CHY Calcium lignosulfonate solution, see also Lignin liquor ...... 43 ...... Calcium long chain alkaryl sulfonate (C11-C50) ...... 34 ...... CAY Calcium long chain alkyl phenates ...... 34 ...... CAN/CAW Calcium long chain alkyl phenate sulfide (C8-C40) ...... 34 ...... CPI Calcium long chain alkyl salicylate (C13+) ...... 34 ...... CAK Calcium long chain alkyl phenolic amine (C8-C40) ...... 9 ...... CPQ Calcium nitrate solution ...... 34 ...... CNU Calcium nitrate, Magnesium nitrate, Potassium chloride solution ...... 34 ...... Calcium sulfonate, Calcium carbonate, Hydrocarbon solvent mixture ...... 33 ...... Camphor oil ...... 18 ...... CPO Canola oil, see rapeseed oil under ‘‘oils, edible.’’ ...... Caprolactam solution ...... 22 ...... CLS Caramel solutions ...... 43 ...... Carbolic oil ...... 21 ...... CBO Carbon disulfide ...... 38 ...... CBB Carbon tetrachloride ...... 36 2 CBT Cashew nut shell oil (untreated) ...... 4 ...... OCN Catoxid feedstock ...... 36 2 CXF Caustic potash solution ...... 5 2 CPS Caustic soda solution ...... 5 2 CSS Cetyl alcohol (hexadecanol), see Alcohols (C13+) ...... ALY Cetyl-Eicosyl methacrylate mixture ...... 14 1 CEM Cetyl-Stearyl alcohol, see Alcohols (C13+) ...... ALY Chlorinated paraffins (C10-C13) ...... 36 ...... CLH Chlorinated paraffins (C14-C17) (with 52% Chlorine) ...... 36 ...... CLJ Chlorine ...... 0 1 CLX Chloroacetic acid solution ...... 4 ...... CHM CHL/MCA Chlorobenzene ...... 36 ...... CRB Chlorodifluoromethane (monochlorodifluoromethane) ...... 36 ...... MCF Chloroform ...... 36 ...... CRF Chlorohydrins ...... 17 1 CHD 4-Chloro-2-methylphenoxyacetic acid, Dimethylamine salt solution ...... 9 ...... CDM Chloronitrobenzene ...... 42 ...... CNO 1-(4-Chlorophenyl)-4,4-dimethyl pentan-3-one ...... 18 2 CDP Chloropropionic acid ...... 4 ...... CPM CLA/CLP Chlorosulfonic acid ...... 0 1 CSA Chlorotoluene ...... 36 ...... CHI CTM/CTO/CRN Choline chloride solutions ...... 20 ...... CCO Citric acid ...... 4 ...... CIS CIT Clay slurry, see also Kaolin clay slurry ...... 43 ...... Coal tar ...... 33 ...... COR OCT Coal tar distillate ...... 33 ...... CDL Coal tar, high temperature ...... 33 ...... CHH Coal tar pitch ...... 33 ...... CTP Cobalt naphthenate in solvent naphtha ...... 34 ...... CNS Coconut oil, fatty acid ...... 34 ...... CFA Copper salt of long chain (C17+) alkanoic acid ...... 34 ...... CUS CFT Corn syrup ...... 43 ...... CSY Cottonseed oil, fatty acid ...... 34 ...... CFY Creosote ...... 21 2 CCT CCW/CWD

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Cresols ...... 21 ...... CRS CRL/CSL/CSO Cresylate spent caustic ...... 5 ...... CSC Cresylic acid ...... 21 ...... CRY Cresylic acid, dephenolized ...... 21 ...... CAD Cresylic acid, sodium salt solution (IMO cargo name), see Cresylate spent 5 ...... CSC caustic. Cresylic acid tar ...... 21 ...... CRX Crotonaldehyde ...... 19 2 CTA Cumene (isopropyl benzene), see Propylbenzene ...... CUM PBY 1,5,9-Cyclododecatriene ...... 30 ...... CYT Cycloheptane ...... 31 1 CYE Cyclohexane ...... 31 1 CHX Cyclohexanol ...... 20 ...... CHN Cyclohexanone ...... 18 ...... CCH Cyclohexanone, Cyclohexanol mixtures ...... 18 2 CYX Cyclohexyl acetate ...... 34 ...... CYC Cyclohexylamine ...... 7 ...... CHA 1,3-Cyclopentadiene dimer ...... 30 ...... CPD DPT Cyclopentadiene, Styrene, Benzene mixture ...... 30 ...... CSB Cyclopentane ...... 31 1 CYP Cyclopentene ...... 30 ...... CPE Cymene ...... 32 CMP Decahydronaphthalene ...... 33 ...... DHN Decaldehyde ...... 19 ...... IDA/DAL Decane, see n-Alkanes (C10+) ...... DCC ALJ Decanoic acid ...... 4 ...... DCO Decene ...... 30 ...... DCE Decyl acetate ...... 34 ...... DYA Decyl acrylate ...... 14 1 DAT IAI/DAR Decyl alcohol ...... 20 2 DAX ISA/DAN Decylbenzene, see Alkyl(C9+) benzenes ...... 32 DBZ AKB Decyloxytetrahydro-thiophene dioxide ...... 0 1, 2 DHT Degummed C9 (DOW) ...... 33 ...... DGC Dextrose solution, see Glucose solution ...... 43 ...... DTS GLU Diacetone alcohol ...... 20 2 DAA Dialkyl(C10-C14) benzenes, see Alkyl(C9+) benzenes ...... 32 DAB AKB Dialkyl(C8-C9) diphenylamines ...... 9 ...... DAQ Dialkyl(C7-C13) phthalates ...... 34 ...... DAH Including: Diisodecyl phthalate Diisononyl phthalate Dinonyl phthalate Ditridecyl phthalate Diundecyl phthalate Dibromomethane ...... 36 ...... DBH Dibutylamine ...... 7 ...... DBA Dibutyl carbinol, see Nonyl alcohol ...... NNS Dibutyl hydrogen phosphonate ...... 34 ...... DHD Dibutylphenols ...... 21 ...... DBT/DBV, DBW Dibutyl phthalate ...... 34 ...... DPA Dichlorobenzene ...... 36 ...... DBX DBM/DBO/DBP 3,4-Dichloro-1-butene ...... 36 ...... DCD DCB Dichlorodifluoromethane ...... 36 ...... DCF 1,1-Dichloroethane ...... 36 ...... DCH 2,2′-Dichloroethyl ether ...... 41 ...... DEE 1,6-Dichlorohexane ...... 36 ...... DHX 2,2′-Dichloroisopropyl ether ...... 36 ...... DCI Dichloromethane ...... 36 DCM 2,4-Dichlorophenol ...... 21 ...... DCP 2,4-Dichlorophenoxyacetic acid, Diethanolamine salt solution ...... 43 ...... DDE 2,4-Dichlorophenoxyacetic acid, Dimethylamine salt solution ...... 0 1, 2 DAD DDA/DSX 2,4-Dichlorophenoxyacetic acid, Triisopropano-lamine salt solution ...... 43 2 DTI Dichloropropane ...... 36 ...... DPX DPB/DPP/DPC/DPL 1,3-Dichloropropene ...... 15 1 DPS DPU/DPF Dichloropropene, Dichloropropane mixtures ...... 15 1 DMX 2,2-Dichloropropionic acid ...... 4 ...... DCN Dicyclopentadiene, see also 1,3-Cyclopentadiene dimer ...... 30 ...... DPT CPD Diethanolamine ...... 8 ...... DEA Diethanolamine salt of 2,4-Dichlorophenoxyacetic acid solution, see 2,4- ...... DDE Dichlorophenoxyacetic acid, Diethanolamine salt solution. Diethylamine ...... 7 ...... DEN Diethylaminoethanol (IMO cargo name), see Diethylethanolamine ...... 8 ...... DAE 2,6-Diethylaniline ...... 9 ...... DMN

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Diethylbenzene ...... 32 DEB Diethylene glycol ...... 40 2 DEG Diethylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1- ...... DME PAG C6) ether. Diethylene glycol butyl ether acetate, see Poly(2-8)alkylene glycol ...... DEM PAF monoalkyl(C1-C6) ether acetate. Diethylene glycol dibenzoate ...... 34 ...... DGZ Diethylene glycol dibutyl ether ...... 40 ...... DIG Diethylene glycol diethyl ether ...... 40 ...... Diethylene glycol ethyl ether, see Poly(2-8)alkylene glycol monoalkyl (C1- ...... DGE PAG C6) ether. Diethylene glycol ethyl ether acetate, see Poly(2-8)alkylene glycol ...... DGA PAF monoalkyl(C1-C6) ether acetates. Diethylene glycol n-hexyl ether, see Poly(2-8)alkylene glycol ...... DHE PAG monoalkyl(C1-C6) ether. Diethylene glycol methyl ether, see Poly(2-8)alkylene glycol ...... DGM PAG monoalkyl(C1-C6) ether. Diethylene glycol methyl ether acetate, see Poly(2-8)alkylene glycol ...... DGR PAF monoalkyl(C1-C6) ether acetate. Diethylene glycol phenyl ether ...... 40 ...... DGP Diethylene glycol phthalate ...... 34 ...... DGL Diethylene glycol propyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1- ...... DGO PAG C6) ether. Diethylenetriamine ...... 7 2 DET Diethylenetriamine pentaacetic acid, pentasodium salt solution ...... 43 ...... Diethylethanolamine ...... 8 ...... DAE Diethyl ether (IMO cargo name), see Ethyl ether ...... 41 ...... EET Diethyl hexanol, see Decyl alcohol ...... DAX Di-(2-ethylhexyl)adipate ...... 34 ...... DEH Di-(2-ethylhexyl)phosphoric acid ...... 1 1 DEP Di-(2-ethylhexyl)phthalate, see Dioctyl phthalate ...... 34 ...... DIE DOP Diethyl phthalate ...... 34 ...... DPH Diethyl sulfate ...... 34 ...... DSU Diglycidyl ether of Bisphenol A ...... 41 ...... BDE BPA Diglycidyl ether of Bisphenol F ...... 41 ...... DGF Diheptyl phthalate ...... 34 ...... DHP Di-n-hexyl adipate ...... 34 ...... DHA Dihexyl phthalate ...... 34 ...... 1,4-Dihydro-9,10-dihydroxy anthracene, disodium salt solution ...... 5 ...... DDH Diisobutylamine ...... 7 ...... DBU Diisobutyl carbinol (commercial cargo name), see Nonyl alcohol ...... 20 ...... DBC NNS Diisobutylene ...... 30 ...... DBL Diisobutyl ketone ...... 18 ...... DIK Diisobutyl phthalate ...... 34 ...... DIT Diisodecyl phthalate, see Dialkyl(C7-C13) phthalates ...... DID DAH Diisononyl adipate ...... 34 ...... DNY Diisononyl phthalate, see Dialkyl(C7-C13) phthalates ...... DIN DAH Diisooctyl phthalate ...... 34 ...... DIO Diisopropanolamine ...... 8 ...... DIP Diisopropylamine ...... 7 ...... DIA Diisopropylbenzene ...... 32 DIX Diisopropyl naphthalene ...... 32 DII N,N-Dimethylacetamide ...... 10 ...... DAC N,N-Dimethylacetamide solution ...... 10 ...... DLS Dimethyl adipate ...... 34 ...... DLA Dimethylamine ...... 7 ...... DMA Dimethylamine solution ...... 7 ...... DMG/DMY/DMC Dimethylamine salt of 4-Chloro-2-methylphenoxyacetic acid solution, see ...... CDM 4-Chloro-2-methylphenoxyacetic acid, Dimethylamine salt solution. Dimethylamine salt of 2,4-Dichlorophenoxyacetic acid solution, see 2,4- ...... DAD/(DDA/DSX) Dichlorophenoxyacetic acid, Dimethylamine salt solution. 2,6-Dimethylaniline ...... 9 ...... DMM Dimethylbenzene, see Xylenes ...... XLX Dimethylcyclicsiloxane hydrolyzate ...... 34 ...... N,N-Dimethylcyclohexylamine ...... 7 ...... DXN N,N-Dimethyldodecylamine (IMO cargo name), see Dodecyldimethylamine 7 ...... DDY Dimethylethanolamine ...... 8 ...... DMB Dimethylformamide ...... 10 ...... DMF Dimethyl furan ...... 41 ...... Dimethyl glutarate ...... 34 ...... DGT Dimethyl hydrogen phosphite ...... 34 2 DPI Dimethyl naphthalene sulfonic acid, sodium salt solution ...... 34 2 DNS Dimethyloctanoic acid ...... 4 ...... DMO

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Dimethyl phthalate ...... 34 ...... DTL Dimethylpolysiloxane, see Polydimethylsiloxane ...... 34 ...... DMP 2,2-Dimethylpropane-1,3-diol ...... 20 ...... DDI Dimethyl succinate ...... 34 ...... DSE Dinitrotoluene ...... 42 ...... DNM DTT/DNL/DNU Dinonyl phthalate, see Dialkyl(C7-C13) phthalates ...... DIF DAH Dioctyl phthalate ...... 34 ...... DOP DIE 1,4-Dioxane ...... 41 ...... DOX Dipentene ...... 30 ...... DPN Diphenyl ...... 32 DIL Diphenylamine (molten) ...... 9 ...... DAG DAM/LRM Diphenylamines, alkylated ...... 7 ...... DAJ Diphenylamine, reaction product with 2,2,4-trimethylpentene ...... 7 ...... DAK Diphenyl, Diphenyl ether mixture ...... 33 ...... DDO DTH Diphenyl ether ...... 41 ...... DPE Diphenyl ether, Diphenyl phenyl ether mixture ...... 41 ...... DOB Diphenylmethane diisocyanate ...... 12 ...... DPM Diphenylol propane-Epichlorohydrin resins ...... 0 1 DPR Diphenyl oxide, see as diphenyl ether ...... Di-n-propylamine ...... 7 ...... DNA Dipropylene glycol ...... 40 ...... DPG Dipropylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1- ...... DBG PAG C6) ether. Dipropylene glycol dibenzoate ...... 34 ...... DGY Dipropylene glycol methyl ether, see Poly (2-8)alkylene glycol ...... DPY PAG monoalkyl(C1-C6) ether. Distillates, flashed feed stocks ...... 33 ...... DFF Distillates, straight run ...... 33 ...... DSR Dithiocarbamate ester (C7-C35) ...... 34 ...... DHO Ditridecyl adipate ...... 34 ...... Ditridecyl phthalate, see Dialkyl(C7-C13) phthalates ...... DTP DAH Diundecyl phthalate, see Dialkyl(C7-C13) phthalates ...... DUP DAH Dodecane ...... 31 1 DOC ALJ tert-Dodecanethiol ...... 0 2 DDL Dodecanol ...... 20 DDN LAL Dodecene ...... 30 ...... DOZ DDC/DOD 2-Dodecenylsuccinic acid, dipotassium salt solution ...... 34 ...... DSP Dodecyl alcohol (IMO cargo name), see Dodecanol ...... DDN Dodecylamine, Tetradecylamine mixture ...... 7 DTA Dodecylbenzene, see Alkyl(C9+)benzenes ...... 32 2 DDB AKB Dodecylbenzenesulfonic acid ...... 0 1, 2 DSA Dodecyldimethylamine, Tetradecyldimethylamine mixture ...... 7 ...... DOT Dodecyl diphenyl ether disulfonate solution ...... 43 ...... DOS Dodecyl hydroxypropyl sulfide ...... 0 1 DOH Dodecyl methacrylate ...... 14 1 DDM Dodecyl-Octadecyl methacrylate mixture ...... 14 1 DOM Dodecyl-Pentadecyl methacrylate mixtures ...... 14 1 DDP Dodecyl phenol ...... 21 ...... DOL Dodecyl xylene ...... 32 2 DXY Drilling brine (containing Calcium, Potassium or Sodium salts) ...... 43 ...... DRB Drilling brine (containing Zinc salts) ...... 43 ...... DZB Drilling mud (low toxicity) (if flammable or combustible) ...... 33 ...... DRM Drilling mud (low toxicity) (if non-flammable or non-combustible) ...... 43 ...... DRM Epichlorohydrin ...... 17 1 EPC Epoxy resin ...... 18 ...... ETBE, see Ethyl tert-butyl ether ...... EBE Ethane ...... 31 1 ETH Ethanolamine (monoethanolamine) ...... 8 ...... MEA 2-Ethoxyethanol, see Ethylene glycol monoalkyl ethers ...... EEO EGC 2-Ethoxyethyl acetate ...... 34 ...... EEA Ethoxylated alcohols, C11-C15, see the alcohol poylethoxylates ...... Ethoxylated long chain (C16+) alkyloxyalkanamine ...... 8 ...... ELA Ethoxy triglycol ...... 40 ...... ETG Ethyl acetate ...... 34 ...... ETA Ethyl acetoacetate ...... 34 ...... EAA Ethyl acrylate ...... 14 1 EAC Ethyl alcohol ...... 20 2 EAL Ethylamine ...... 7 2 EAM Ethylamine solution ...... 7 ...... EAN Ethyl amyl ketone ...... 18 ...... EAK ELK Ethylbenzene ...... 32 ETB Ethyl butanol ...... 20 ...... EBT N-Ethyl-n-butylamine ...... 7 ...... EBA

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Ethyl tert-butyl ether ...... 41 2 EBE Ethyl butyrate ...... 34 ...... EBR Ethyl chloride ...... 36 ...... ECL Ethyl cyclohexane ...... 31 1 ECY N-Ethylcyclohexylamine ...... 7 ...... ECC Ethylene ...... 30 ...... ETL Ethyleneamine EA 1302 ...... 7 2 EMX EDA Ethylene carbonate ...... 34 ...... Ethylene chlorohydrin ...... 20 ...... ECH Ethylene cyanohydrin ...... 20 ...... ETC Ethylenediamine ...... 7 2 EDA EMX Ethylenediaminetetraacetic acid, tetrasodium salt solution ...... 43 ...... EDS Ethylene dibromide ...... 36 ...... EDB Ethylene dichloride ...... 36 2 EDC Ethylene glycol ...... 20 2 EGL Ethylene glycol acetate ...... 34 ...... EGO Ethylene glycol butyl ether, see Ethylene glycol monoalkyl ethers ...... EGM EGC Ethylene glycol tert-butyl ether, see Ethylene glycol monoalkyl ethers ...... EGC Ethylene glycol butyl ether acetate ...... 34 ...... EMA Ethylene glycol diacetate ...... 34 ...... EGY Ethylene glycol dibutyl ether ...... 40 ...... EGB Ethylene glycol ethyl ether, see Ethyl glycol monoalkyl ethers ...... EGE EGC/EEO Ethylene glycol ethyl ether acetate, see 2-Ethoxyethyl acetate ...... EGA EEA Ethylene glycol hexyl ether ...... 40 ...... EGH Ethylene glycol isopropyl ether, see Ethylene glycol monoalkyl ethers ...... EGI EGC Ethylene glycol methyl butyl ether, see Ethylene glycol monoalkyl ethers .. 40 ...... EMB EGC Ethylene glycol methyl ether, see Ethylene glycol monoalkyl ethers ...... EME EGC Ethylene glycol methyl ether acetate ...... 34 ...... EGT Ethylene glycol monoalkyl ethers ...... 40 ...... EGC Including: Ethylene glycol butyl ether Ethylene glycol isobutyl ether Ethylene glycol tert-butyl ether Ethylene glycol ethyl ether Ethylene glycol hexyl ether Ethylene glycol methyl ether Ethylene glycol propyl ether Ethylene glycol isopropyl ether Ethylene glycol phenyl ether ...... 40 ...... EPE Ethylene glycol phenyl ether, Diethylene glycol phenyl ether mixture ...... 40 ...... EDX Ethylene glycol propyl ether, see Ethylene glycol monoalkyl ethers ...... EGP EGC Ethylene glycol iso-propyl ether, see Ethylene glycol monoalkyl ethers ...... EGI EGC Ethylene oxide ...... 0 1 EOX Ethylene oxide, Propylene oxide mixture ...... 16 1 EPM Ethylene-Propylene copolymer ...... 30 ...... Ethylene-Vinyl acetate copolymer emulsion ...... 43 ...... Ethyl ether ...... 41 ...... EET Ethyl-3-ethoxypropionate ...... 34 ...... EEP 2-Ethylhexaldehyde, see Octyl aldehydes ...... HA OAL 2-Ethylhexanoic acid, see Octanoic acids ...... EHO OAY 2-Ethylhexanol, see Octanol ...... EHX OCX 2-Ethylhexyl acrylate ...... 14 1 EAI 2-Ethylhexylamine ...... 7 ...... EHM Ethyl hexyl phthalate ...... 34 ...... EHE Ethyl hexyl tallate ...... 34 ...... EHT 2-Ethyl-1-(hydroxymethyl)propane-1,3-diol, C8-C10 ester ...... 34 ...... EHD Ethylidene norbornene ...... 30 2 ENB Ethyl methacrylate ...... 14 1 ETM N-Ethylmethylallylamine ...... 7 ...... EML 2-Ethyl-6-methyl-N-(1′-methyl-2-methoxyethyl)aniline ...... 9 ...... EEM o-Ethyl phenol ...... 21 ...... EPL Ethyl propionate ...... 34 ...... EPR 2-Ethyl-3-propylacrolein ...... 19 2 EPA Ethyl toluene ...... 32 ETE Fatty acids (saturated, C13+), see Fatty acids (saturated, C14+) ...... Fatty acids (saturated, C14+) ...... 34 ...... FAD SRA Ferric chloride solution ...... 1 1 FCS FCL Ferric hydroxyethylethylenediaminetriacetic acid, trisodium salt solution .... 43 2 FHX STA Ferric nitrate, Nitric acid solution ...... 3 ...... FNN Fish solubles (water based fish meal extracts) ...... 43 ...... FSO Fluorosilicic acid ...... 1 1 FSJ Formaldehyde, Methanol mixtures ...... 19 2 MTM Formaldehyde solution ...... 19 2 FMS

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Formamide ...... 10 ...... FAM Formic acid ...... 4 2 FMA Fructose solution ...... 43 ...... Fumaric adduct of Rosin, water dispersion ...... 43 ...... FAR Furfural ...... 19 ...... FFA Furfuryl alcohol ...... 20 2 FAL Gas oil, cracked ...... 33 ...... GOC Gasoline blending stock, alkylates ...... 33 ...... GAK Gasoline blending stock, reformates ...... 33 ...... GRF Gasolines: Automotive (not over 4.23 grams lead per gal.) ...... 33 ...... GAT Aviation (not over 4.86 grams lead per gal) ...... 33 ...... GAV AVA Casinghead (natural) ...... 33 ...... GCS Polymer ...... 33 ...... GPL Straight run ...... 33 ...... GSR Glucose solution ...... 43 ...... GLU DTS Glutaraldehyde solution ...... 19 ...... GTA Glycerine ...... 20 2 GCR Glycerine, Dioxanedimethanol mixture ...... 20 ...... GDM Glycerol monooleate ...... 20 ...... GMO Glycerol polyalkoxylate ...... 34 ...... Glyceryl triacetate ...... 34 ...... Glycidyl ester of C10 trialkyl acetic acid (IMO cargo name), see Glycidyl 34 ...... GLT ester of tridecyl acetic acid. Gylcidyl ester of tridecylacetic acid ...... 34 ...... GLT Glycidyl ester of Versatic acid, see Gylcidyl ester of tridecylacetic acid ...... GLT Glycine, sodium salt solution ...... 7 ...... Glycol diacetate, see Ethylene glycol diacetate ...... EGY Glycolic acid solution ...... 4 ...... GLC Glyoxal solutions ...... 19 ...... GOS Glyoxylic acid ...... 4 ...... GAC Glyphosate solution (not containing surfactant) (See also ROUNDUP) ...... 7 ...... GIO Heptadecane, see n-Alkanes (C10+) ...... ALJ Heptane ...... 31 1 HMX ALK (HPI/HPT) n-Heptanoic acid ...... 4 ...... HEP Heptanol ...... 20 ...... HTX HTN Heptene ...... 30 ...... HPX HTE Heptyl acetate ...... 34 ...... HPE Herbicide (C15-H22-NO2-Cl), see Metolachlor ...... MCO Hexadecanol (cetyl alcohol), see Alcohols (C13+) ...... ALY 1-Hexadecylnaphthalene, 1,4-bis(Hexadecyl)naphthalene mixture ...... 32 Hexaethylene glycol, see Polyethylene glycol ...... Hexamethylene glycol ...... 20 ...... Hexamethylenediamine ...... 7 ...... HME HMD/HMC Hexamethylenediamine solution ...... 7 ...... HMC HMD/HME Hexamethylenediamine adipate solution ...... 43 ...... HAM Hexamethylene diisocyanate ...... 12 ...... HDI Hexamethylenetetramine ...... 7 ...... HMT Hexamethylenetetramine solutions ...... 7 ...... HTS Hexamethylenimine ...... 7 ...... HMI Hexane ...... 31 2 HXS ALK (IHA/HXA) Hexanoic acid ...... 4 ...... HXO Hexanol ...... 20 ...... HXN Hexene ...... 30 ...... HEX HXE/HXT/MPN/MTN Hexyl acetate ...... 34 ...... HAE HSA Hexylene glycol ...... 20 ...... HXG HiTec 321 ...... 7 ...... HIT Hog grease, see Lard ...... Hydrochloric acid ...... 1 1 HCL Hydrofluorosilicic acid, see Fluorosilicic acid ...... HFS FSJ bis(Hydrogenated tallow alkyl)methyl amines ...... 7 ...... HTA Hydrogen peroxide solutions ...... 0 1 HPN/HPS/HPO 2-Hydroxyethyl acrylate ...... 14 2 HAI N-(Hydroxyethyl)ethylenediamine triacetic acid, trisodium salt solution ...... 43 ...... HET FHX N,N-bis(2-Hydroxyethyl) oleamide ...... 10 ...... HOO 2-Hydroxy-4-(methylthio)butanoic acid ...... 4 ...... HBA Hydroxy terminated polybutadiene (IMO cargo name), see Polybutadiene, 20 ...... hydroxy terminated. alpha-hydro-omega-Hydroxytetradeca(oxytetramethylene), see ...... HTO Poly(tetramethylene ether) glycols (mw 950-1050). Icosa(oxypropane-2,3-diyl)s ...... 20 ...... IOP Isophorone ...... 18 2 IPH Isophorone diamine ...... 7 ...... IPI

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Isophorone diisocyanate ...... 12 ...... IPD Isoprene ...... 30 ...... IPR Isoprene concentrate (Shell) ...... 30 ...... ISC Isopropylbenzene (cumene), see Propylbenzene ...... PBY Jet fuels: JP-4 ...... 33 ...... JPF JP-5 ...... 33 ...... JPV JP-8 ...... 33 ...... JPE Kaolin clay slurry ...... 43 ...... Kerosene ...... 33 ...... KRS Ketone residue ...... 18 ...... KTR Kraft black liquor ...... 5 ...... KPL Kraft pulping liquors (Black, Green, or White) ...... 5 ...... KPL Lactic acid ...... 0 1, 2 LTA Lactonitrile solution ...... 37 ...... LNI Lard ...... 34 ...... Latex (ammonia inhibited) ...... 30 ...... LTX Latex, liquid synthetic ...... 43 ...... LLS LTX Lauric acid ...... 34 ...... LRA Lauryl polyglucose, see Alkyl(C12 -C14) polyglucoside solution (55% or ...... LAP AGM less). Lecithin ...... 34 ...... LEC Lignin liquor ...... 43 ...... Lignin sulfonic acid, sodium salt solution, see Sodium lignosulfonate solu- ...... tion. d-Limonene, see Dipentene ...... Liquid Streptomyces solubles ...... 43 ...... Long chain alkaryl polyether (C11-C20) ...... 41 ...... LCP Long chain alkaryl sulfonic acid (C16-C60) ...... 0 1, 2 LCS Long chain alkylphenate/Phenol sulfide mixture ...... 21 ...... LPS Long chain polyetheramine in alkyl(C2-C4)benzenes ...... 7 ...... LCE l-Lysine solution ...... 43 ...... LYS Magnesium chloride solution ...... 0 1, 2 Magnesium hydroxide slurry ...... 5 ...... Magnesium long chain alkaryl sulfonate (C11-C50) ...... 34 ...... MAS MSE Magnesium long chain alkyl phenate sulfide (C8-C20) ...... 34 ...... MPS Magnesium long chain alkyl salicylate (C11+) ...... 34 ...... MLS Magnesium nonyl phenol sulfide, see Magnesium long chain alkyl phenate ...... MPS sulfide (C8-C20). Magnesium sulfonate, see Magnesium long chain alkaryl sulfonate (C11- ...... MSE MAS C50). Maleic anhydride ...... 11 ...... MLA Mercaptobenzothiazol, sodium salt solution (IMO cargo name), see So- 5 ...... SMB dium-2-mercaptobenzothiazol solution. Mesityl oxide ...... 18 2 MSO Metam sodium solution ...... 7 ...... MSS SMD Methacrylic acid ...... 4 ...... MAD Methacrylic resin in Ethylene dichloride ...... 14 1 MRD Methacrylonitrile ...... 15 2 MET Methane ...... 31 1 MTH 3-Methoxy-1-butanol ...... 20 ...... 3-Methoxybutyl acetate ...... 34 ...... MOA N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-methyl chloroacetanilide (IMO 34 ...... MCO cargo name), see Metolachlor. 1-Methoxy-2-propyl acetate ...... 34 ...... MPO Methoxy triglycol ...... 40 ...... MTG Methyl acetate ...... 34 ...... MTT Methyl acetoacetate ...... 34 ...... MAE Methyl acetylene, Propadiene mixture ...... 30 ...... MAP Methyl acrylate ...... 14 1 MAM Methyl alcohol ...... 20 2 MAL Methylamine solutions ...... 7 ...... MSZ Methyl amyl acetate ...... 34 ...... MAC Methyl amyl alcohol ...... 20 ...... MAA MIC Methyl amyl ketone ...... 18 ...... MAK Methyl bromide ...... 36 ...... MTB Methyl butanol, see the amyl alcohols ...... AAI Methyl butenol ...... 20 ...... MBL Methyl butenes (tert-amylenes), see Pentene ...... PTX Methyl tert-butyl ether ...... 41 2 MBE Methyl butyl ketone ...... 18 2 MBK Methylbutynol, see 2-Methyl-2-hydroxy-3-butyne ...... 20 ...... MBY MHB 3-Methyl butyraldehyde ...... 19 ......

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Methyl butyrate ...... 34 ...... MBU Methyl chloride ...... 36 ...... MTC Methylcyclohexane ...... 31 1 MCY Methylcyclopentadiene dimer ...... 30 ...... MCK Methyl diethanolamine ...... 8 ...... MDE MAB Methylene chloride, see Dichloromethane ...... DCM 2-Methyl-6-ethylaniline ...... 9 ...... MEN Methyl ethyl ketone ...... 18 2 MEK 2-Methyl-5-ethylpyridine ...... 9 ...... MEP Methyl formate ...... 34 ...... MFM N-Methylglucamine solution ...... 43 ...... MGC Methyl heptyl ketone ...... 18 ...... MHK 2-Methyl-2-hydroxy-3-butyne ...... 20 ...... MHB Methyl isoamyl ketone ...... 18 ...... MAK Methyl isobutyl carbinol, see Methyl amyl alcohol ...... MIC MAA Methyl isobutyl ketone ...... 18 2 MIK Methyl methacrylate ...... 14 1 MMM 3-Methyl-3-methoxybutanol ...... 20 ...... 3-Methyl-3-methoxybutyl acetate ...... 34 ...... Methyl naphthalene ...... 32 MNA Methylolureas ...... 19 ...... MUS 2-Methyl pentane ...... 31 1 IHA 2-Methyl-1-pentene, see Hexene ...... MPN HEX 4-Methyl-1-pentene, see Hexene ...... MTN HEX Methyl tert-pentyl ether (IMO cargo name), see tert-Amyl methyl ether ...... 41 ...... AYE 2-Methyl-1,3-propanediol ...... 20 ...... MDL Methyl propyl ketone ...... 18 ...... MKE Methylpyridine ...... 9 ...... MPR/MPE/MPF N-Methyl-2-pyrrolidone ...... 9 2 MPY Methyl salicylate ...... 34 ...... MES alpha-Methylstyrene ...... 30 ...... MSR 3-(Methylthio)propionaldehyde ...... 19 ...... MTP Metolachlor ...... 34 ...... MCO Milk ...... 43 ...... Mineral spirits ...... 33 ...... MNS Molasses ...... 20 ...... Molasses residue ...... 0 1 Monochlorodifluoromethane ...... 36 ...... MCF Monoethanolamine, see Ethanolamine ...... Monoisopropanolamine, see Propanolamine ...... Morpholine ...... 7 2 MPL Motor fuel antiknock compounds containing lead alkyls ...... 0 1 MFA MTBE, see Methyl tert-butyl ether ...... MBE Myrcene ...... 30 ...... MRE Naphtha: Aromatic ...... 33 ...... Coal tar solvent ...... 33 ...... NCT Heavy ...... 33 ...... Paraffinic ...... 33 ...... Petroleum ...... 33 ...... PTN Solvent ...... 33 ...... NSV Stoddard solvent ...... 33 ...... NSS Varnish Makers’ and Painters’ ...... 33 ...... NVM Naphthalene ...... 32 NTM Naphthalene still residue ...... 32 2 NSR Naphthalene sulfonic acid-formaldehyde copolymer, sodium salt solution .. 0 1 NFS Naphthalene sulfonic acid, sodium salt solution ...... 34 ...... NSA Naphthenic acid ...... 4 ...... NTI Naphthenic acid, sodium salt solution ...... 43 ...... NTS Neodecanoic acid ...... 4 ...... NEA NIAX POLYOL APP 240C ...... 0 1, 2 NXP Nitrating acid ...... 0 1 NIA Nitric acid (70% or less) ...... 3 ...... NCD Nitric acid (greater than 70%) ...... 0 1 NAC Nitrobenzene ...... 42 ...... NTB o-Nitrochlorobenzene, see Chloronitrobenzene ...... CNO Nitroethane ...... 42 ...... NTE Nitroethane, 1-Nitropropane mixtures ...... 42 ...... NNO o-Nitrophenol ...... 0 1, 2 NTP NIP/NPH Nitropropane ...... 42 ...... NPM NPN/NPP Nitropropane, Nitroethane mixture ...... 42 ...... NNO (NNM/NNL) Nitrotoluene ...... 42 ...... NIT NIE/NTT/NTR Nonane ...... 31 1 NAX ALK (NAN)

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Nonanoic acid ...... 4 ...... NNA NAI/NIN Nonanoic, Tridecanoic acid mixture ...... 4 ...... NAT Nonene ...... 30 ...... NOO NON/NNE Nonyl acetate ...... 34 ...... NAE Nonyl alcohol ...... 20 2 NNS NNI/NNN/DBC Nonylbenzene, see Alkyl(C9+)benzenes ...... AKB Nonyl methacrylate ...... 14 1 NMA Nonyl phenol ...... 21 ...... NNP Nonyl phenol poly(4+)ethoxylates ...... 40 ...... NPE Nonyl phenol sulfide solution, see Alkyl phenol sulfide (C8-C40) ...... AKS/NPS Noxious Liquid Substance, n.o.s. (NLS’s) ...... 0 1 1-Octadecene, see the olefin or alpha-olefin entries ...... Octadecenoamide ...... 10 ...... ODD Octadecenol (oleyl alcohol), see Alcohols (C13+) ...... ALY Octane ...... 31 1 OAX ALK (IOO/OAN) Octanoic acid ...... 4 ...... OAY OAA/EHO Octanol ...... 20 2 OCX IOA/OTA/EHX Octene ...... 30 ...... OTX OTE n-Octyl acetate ...... 34 ...... OAF OAE Octyl alcohol, see Octanol ...... OCX Octyl aldehyde ...... 19 ...... OAL IOC/OLX/EHA Octyl decyl adipate ...... 34 ...... ODA Octyl nitrate, see Alkyl(C7-C9) nitrates ...... ONE AKN Octyl phenol ...... 21 ...... Octyl phthalate, see Dioctyl phthalate ...... DOP Oil, edible: Beechnut ...... 34 ...... OBN VEO Castor ...... 34 ...... OCA VEO Cocoa butter ...... 34 ...... OCB VEO Coconut ...... 34 2 OCC VEO Cod liver ...... 34 ...... OCL AFN Corn ...... 34 ...... OCO VEO Cottonseed ...... 34 ...... OCS VEO Fish ...... 34 2 OFS AFN Groundnut ...... 34 ...... OGN VEO Hazelnut ...... 34 ...... OHN VEO Lard ...... 34 ...... OLD AFN Maize ...... 34 ...... VEO (OCO) Nutmeg butter ...... 34 ...... ONB VEO Olive ...... 34 ...... OOL VEO Palm ...... 34 2 OPM VEO Palm kernel ...... 34 ...... OPO VEO Peanut ...... 34 ...... OPN VEO Poppy ...... 34 ...... OPY VEO Poppy seed ...... 34 ...... VEO Raisin seed ...... 34 ...... ORA VEO Rapeseed ...... 34 ...... ORP VEO Rice bran ...... 34 ...... ORB VEO Safflower ...... 34 ...... OSF VEO Salad ...... 34 ...... OSL VEO Sesame ...... 34 ...... OSS VEO Soya bean ...... 34 ...... OSB VEO Sunflower seed ...... 34 ...... OSN VEO Tucum ...... 34 ...... OTC VEO Vegetable ...... 34 ...... OVG VEO Walnut ...... 34 ...... OWN VEO Oil, fuel: No. 1 ...... 33 ...... OON No. 1-D ...... 33 ...... OOD No. 2 ...... 33 ...... OTW No. 2-D ...... 33 ...... OTD No. 4 ...... 33 ...... OFR No. 5 ...... 33 ...... OFV No. 6 ...... 33 ...... OSX Oil, misc: Aliphatic ...... 33 ...... Animal ...... 34 ...... OMA AFN Aromatic ...... 33 ...... Clarified ...... 33 ...... OCF Coal ...... 33 ...... Coconut oil, fatty acid methyl ester ...... 34 ...... OCM Cotton seed oil, fatty acid ...... 34 ...... CFY Crude ...... 33 ...... OIL

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Diesel ...... 33 ...... ODS Gas, high pour ...... 33 ...... Gas, low pour ...... 33 ...... Gas, low sulfur ...... 33 ...... Heartcut distillate ...... 33 ...... Lanolin ...... 34 ...... OLL AFN Linseed ...... 33 ...... OLS Lubricating ...... 33 ...... OLB Mineral ...... 33 ...... OMN Mineral seal ...... 33 ...... OMS Motor ...... 33 ...... OMT Neatsfoot ...... 33 ...... ONF AFN Oiticica ...... 34 ...... OOI Palm oil, fatty acid methyl ester ...... 34 ...... OPE Penetrating ...... 33 ...... OPT Perilla ...... 34 ...... OPR Pilchard ...... 34 ...... OPL AFN Pine ...... 33 ...... OPI PNL Residual ...... 33 ...... Road ...... 33 ...... ORD Rosin ...... 33 ...... ORN Seal ...... 34 ...... Soapstock ...... 34 ...... OIS Soybean (epoxidized) ...... 34 ...... EVO Sperm ...... 33 ...... OSP AFN Spindle ...... 33 ...... OSD Tall ...... 34 ...... OTL Tall, fatty acid ...... 34 2 TOF Transformer ...... 33 ...... OTF Tung ...... 34 ...... OTG Turbine ...... 33 ...... OTB Wood ...... 34 ...... Olefin/Alkyl ester copolymer (molecular weight 2000+) ...... 34 ...... OCP Olefin mixtures ...... 30 ...... OFX/OFY alpha-Olefins (C6-C18) mixtures ...... 30 ...... OAM Olefins (C13+) ...... 30 ...... Oleic acid ...... 34 ...... OLA Oleum ...... 0 1, 2 OLM Oleyl alcohol (octadecenol), see Alcohols (C13+) ...... ALY Oleylamine ...... 7 ...... OLY ORIMULSION, see Asphalt emulsion ...... ASQ Oxyalkylated alkyl phenol formaldehyde ...... 33 ...... Palm kernel acid oil ...... 34 ...... PNO Palm kernel acid oil, methyl ester ...... 34 ...... PNF Palm kernel oil, fatty acid, see Palm kernel acid oil ...... PNO Palm kernel oil, fatty acid methyl ester, see Palm kernel acid oil, methyl ...... PNF ester. Palm stearin ...... 34 ...... PMS n-Paraffins (C10-C20), see n-Alkanes (C10+) ...... PFN ALJ Paraldehyde ...... 19 ...... PDH Paraldehyde-Ammonia reaction product ...... 9 ...... PRB Pentachloroethane ...... 36 ...... PCE Pentacosa(oxypropane-2,3-diyl)s ...... 20 ...... POY Pentadecanol, see Alcohols (C13+) ...... PDC ALY 1,3-Pentadiene ...... 30 ...... PDE PDN Pentaethylene glycol, see Polyethylene glycols ...... Pentaethylene glycol methyl ether, see Poly(2-8)alkylene glycol ...... PAG monoalkyl(C1-C6) ether. Pentaethylenehexamine ...... 7 ...... PEN Pentaethylenehexamine, Tetraethylenepentamine mixture ...... 7 ...... PEP Pentane ...... 31 1 PTY IPT/PTA Pentanoic acid ...... 4 ...... POC n-Pentanoic acid, 2-Methyl butryic acid mixture ...... 4 ...... POJ POC Pentasodium salt of Diethylenetriamine pentaacetic acid solution, see ...... Diethylenetriamine pentaacetic acid, pentasodium salt solution. Pentene ...... 30 ...... PTX PTE Pentyl aldehyde ...... 19 ...... n-Pentyl propionate ...... 34 ...... PPE Perchloroethylene ...... 36 2 PER TTE Petrolatum ...... 33 ...... PTL Phenol ...... 21 ...... PHN 1-Phenyl-1-xylyl ethane ...... 32 PXE Phosphate esters, alkyl(C12-C14)amine ...... 7 ...... PEA

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Group Foot- CHRIS Related CHRIS Chemical name No. note Code Codes

Phosphoric acid ...... 1 1 PAC Phosphorus ...... 0 1 PPW PPR/PPB Phthalate based polyester polyol ...... 0 1, 2 PBE Phthalic anhydride ...... 11 ...... PAN alpha-Pinene ...... 30 ...... PIO PIN beta-Pinene ...... 30 ...... PIP PIN Pine oil ...... 33 ...... PNL OPI Polyalkyl(C18-C22) acrylate in Xylene ...... 14 1 PIX Polyalkylene glycol butyl ether, see Poly(2-8)alkylene glycol ...... PGB PAG monoalkyl(C1-C6) ether. Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether ...... 40 ...... PAG Including: Diethylene glycol butyl ether Diethylene glycol ethyl ether Diethylene glycol n-hexyl ether Diethylene glycol methyl ether Diethylene glycol n-propyl ether Dipropylene glycol butyl ether Dipropylene glycol methyl ether Polyalkylene glycol butyl ether Polyethylene glycol monoalkyl ether Polypropylene glycol methyl ether Tetraethylene glycol methyl ether Triethylene glycol butyl ether Triethylene glycol ethyl ether Triethylene glycol methyl ether Tripropylene glycol methyl ether Poly(2-8)alkylene glycol monoalkyl(C1-C6) ether acetate ...... 34 ...... PAF Including: Diethylene glycol butyl ether acetate Diethylene glycol ethyl ether acetate Diethylene glycol methyl ether acetate Polyalkylene glycols, Polyalkylene glycol monoalkyl ethers mixtures ...... 40 ...... PPX Polyalkylene oxide polyol ...... 20 ...... PAO Polyalkyl methacrylate (C1-C20) ...... Polyalkyl(C10-C20)methacrylate ...... 14 1 PMT Polyalkyl(C10-C18)methacrylate/Ethylene propylene copolymer mixture .... 14 1 PEM Polyaluminum chloride solution ...... 1 1 Polybutadiene, hydroxyl terminated ...... 20 ...... Polybutene ...... 30 ...... PLB Polybutenyl succinimide ...... 10 ...... PBS Poly(2+)cyclic aromatics ...... 32 PCA Polydimethylsiloxane ...... 34 ...... Polyether (molecular weight 2000+) ...... 41 ...... PYR Polyethylene glycol ...... 40 ...... Polyethylene glycol dimethyl ether ...... 40 ...... Polyethylene glycol monoalkyl ether, see Poly(2-8)alkylene glycol ...... PEE PAG monoalkyl(C1-C6) ether. Polyethylene polyamines ...... 7 2 PEB Polyferric sulfate solution ...... 34 ...... PSS Polyglycerine, Sodium salts solution (containing less than 3% Sodium hy- 20 2 PGT droxide). Polyglycerol ...... 20 ...... GCR Polyisobutenamine in aliphatic (C10-C14) solvent ...... 7 ...... PIB Polyisobutenyl anhydride adduct ...... 11 ...... Poly(4+)isobutylene ...... 30 ...... Polymethylene polyphenyl isocyanate ...... 12 ...... PPI Polymethylsiloxane ...... 34 ...... Polyolefin (molecular weight 300+) ...... 30 ...... Polyolefin amide alkeneamine (C17+) ...... 33 ...... POH Polyolefin amide alkeneamine (C28+) ...... 33 ...... POD Polyolefin amide alkeneamine borate (C28-C250) ...... 33 ...... PAB Polyolefin amide alkeneamine/Molybdenum oxysulfide mixture ...... 7 ...... Polyolefin amide alkeneamine polyol ...... 20 ...... PAP Poly(C17+)olefin amine ...... 7 ...... POG Polyolefinamine (C28-C250) ...... 33 ...... POM Polyolefinamine in alkyl(C2-C4)benzenes ...... 32 POF Polyolefin aminoester salt ...... 34 ...... PAE Polyolefin anhydride ...... 11 ...... PAR Polyolefin ester (C28-C250) ...... 34 ...... POS Polyolefin phenolic amine (C28-C250) ...... 7 ...... PPH Polyolefin phosphorosulfide, barium derivative (C28-C250) ...... 34 ...... PPS Poly(20)oxyethylene sorbitan monooleate ...... 34 ...... PSM

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Poly(5+)propylene ...... 30 ...... PLQ PLP Polypropylene glycol ...... 40 ...... PGC Polypropylene glycol methyl ether, see Propylene glycol monoalkyl ether ...... PGM PGE Polysiloxane ...... 34 ...... DMP Poly(tetramethylene ether) glycols (mw 950-1050) (alpha-hydro-omega- 40 ...... HTO Hydroxytetradeca(oxytetramethylene)). Polytetramethylene ether glycol ...... 40 ...... Potassium chloride solution ...... 43 ...... PCS (DRB) Potassium formate solution ...... 34 ...... PFR Potassium hydroxide solution (IMO cargo name), see Caustic potash solu- 5 2 CPS tion. Potassium oleate ...... 34 ...... POE Potassium salt of polyolefin acid ...... 34 ...... Potassium thiosulfate solution ...... 43 ...... PTF Propane ...... 31 1 PRP Propanolamine ...... 8 ...... PAX MPA/PLA Propionaldehyde ...... 19 ...... PAD Propionic acid ...... 4 ...... PNA Propionic anhydride ...... 11 ...... PAH Propionitrile ...... 37 ...... PCN n-Propoxypropanol, see Propylene glycol monoalkyl ether ...... PXP PGE Propyl acetate ...... 34 ...... IAC/PAT Propyl alcohol ...... 20 2 IPA/PAL Propylamine ...... 7 ...... IPP/PRA iso-Propylamine solution ...... 7 ...... IPO/IPQ Propylbenzene ...... 32 2 PBY PBZ/CUM n-Propyl chloride ...... 36 ...... PRC iso-Propylcyclohexane ...... 31 1 IPX Propylene ...... 30 ...... PPL Propylene-butylene copolymer ...... 30 ...... PBP Propylene carbonate ...... 34 ...... Propylene dimer ...... 30 ...... PDR Propylene glycol ...... 20 2 PPG Propylene glycol n-butyl ether, see Propylene glycol monoalkyl ether ...... PGD PGE Propylene glycol ethyl ether, see Propylene glycol monoalkyl ether ...... PGY PGE Propylene glycol methyl ether, see Propylene glycol monoalkyl ether ...... PME PGE Propylene glycol methyl ether acetate ...... 34 ...... PGN Propylene glycol monoalkyl ether ...... 40 ...... PGE Including: n-Propoxypropanol Propylene glycol n-butyl ether Propylene glycol ethyl ether Propylene glycol methyl ether Propylene glycol propyl ether Propylene glycol phenyl ether ...... 40 ...... PGP Propylene glycol propyl ether, see Propylene glycol monoalkyl ether ...... PGE Propylene oxide ...... 16 1 POX Propylene, Propane, MAPP gas mixture ...... 30 2 PPM Propylene tetramer ...... 30 ...... PTT Propylene trimer ...... 30 ...... PTR Propyl ether ...... 41 ...... IPE/PRE Pseudocumene, see Trimethylbenzene ...... TME/TRE Pyridine ...... 9 ...... PRD Pyridine bases, see Paraldehyde-Ammonia reaction product ...... PRB Roehm monomer 6615 ...... 14 1 RMN Rosin oil ...... 33 ...... ORN Rosin soap (disproportionated) solution ...... 43 ...... RSP ROUNDUP (See also Glyphosate solution) ...... 7 ...... RUP Rum, see Alcoholic beverages ...... SAP 7001 ...... 0 1 SON Sewage sludge ...... 43 ...... Silica slurry ...... 43 ...... Sludge, treated ...... 43 ...... Sodium acetate, Glycol, Water mixture (not containing Sodium hydroxide) 34 2 SAO SAP Sodium acetate, Glycol, Water mixture (containing Sodium hydroxide) ...... 5 ...... SAP SAO Sodium acetate solution ...... 34 ...... SAN AKP Sodium alkyl sulfonate solution ...... 43 ...... SSU Sodium alkyl (C14-C17) sulfonates 60-65% solution (IMO cargo name), 34 ...... AKA see Alkane (C14-C17) sulfonic acid, sodium salt solution. Sodium aluminate solution ...... 5 ...... SAU Sodium aluminosillicate slurry ...... 34 ...... Sodium benzoate solution ...... 34 ...... SBN Sodium borohydride, Sodium hydroxide solution ...... 5 ...... SBX SBH/SBI

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Sodium carbonate solutions ...... 5 ...... SCE Sodium chlorate solution ...... 0 1, 2 SDD SDC Sodium cyanide solution ...... 5 ...... SCS SCN Sodium dichromate solution ...... 0 1, 2 SDL SCR Sodium dimethyl naphthalene sulfonate solution, see Dimethyl naph- ...... DNS thalene sulfonic acid, sodium salt solution. Sodium hydrogen sulfide, Sodium carbonate solution ...... 0 1, 2 SSS Sodium hydrogen sulfite solution ...... 43 ...... SHX Sodium hydrosulfide solution ...... 5 2 SHR Sodium hydrosulfide, Ammonium sulfide solution ...... 5 2 SSA Sodium hydroxide solution (IMO cargo name), see Caustic soda solution 5 2 CSS Sodium hypochlorite solution ...... 5 ...... SHP/SHQ/(SHC) Sodium lignosulfonate solution, see also Lignin liquor ...... 43 ...... Sodium long chain alkyl salicylate (C13+) ...... 34 ...... SLS Sodium 2-mercaptobenzothiazol solution ...... 5 ...... SMB Sodium N-methyl dithio carbamate solution, see Metam sodium solution ...... MSS Sodium naphthalene sulfonate solution, see Naphthalene sulfonic acid, ...... SNS NSA sodium salt solution. Sodium naphthenate solution, see Naphthenic acid, sodium salt solution ...... NTS Sodium nitrite solution ...... 5 ...... SNI SNT Sodium petroleum sulfonate ...... 33 ...... SPS Sodium polyacrylate solution ...... 43 2 Sodium salt of Ferric hydroxyethylethylenediaminetriacetic acid solution, ...... STA FHX see Ferric hydroxyethylethylenediaminetriacetic acid, trisodium salt solution. Sodium silicate solution ...... 43 2 SSN SSC Sodium sulfide, Hydrosulfide solution ...... 0 1, 2 SSH/SSI/SSJ Sodium sulfide solution ...... 43 ...... SDR Sodium sulfite solution ...... 43 ...... SUP SUS Sodium tartrates, Sodium succinates solution ...... 43 ...... STM Sodium thiocyanate solution ...... 0 1, 2 STS SCY Sorbitol solutions ...... 20 ...... SBT Soyabean oil (expoxidized) ...... 34 ...... OSC/EVO Stearic acid, see Fatty acids (saturated, C14+) ...... SRA FAD Stearyl alcohol ...... 20 ...... Styrene ...... 30 ...... STY STX Styrene monomer ...... 30 ...... STY STX Sulfohydrocarbon (C3-C88) ...... 33 ...... SFO Sulfohydrocarbon, long chain (C18+) alkylamine mixture ...... 7 ...... SFX Sulfolane ...... 39 ...... SFL Sulfonated polyacrylate solutions ...... 43 2 Sulfur ...... 0 1 SXX Sulfuric acid ...... 2 2 SFA Sulfuric acid, spent ...... 2 SAC Sulfurized fat (C14-C20) ...... 33 ...... SFT Sulfurized polyolefinamide alkene(C28-C250) amine ...... 33 ...... SPO Tall oil ...... 34 ...... OTL Tall oil fatty acid (Resin acids less than 20%) ...... 34 2 TOF Tall oil fatty acid, barium salt ...... 0 1, 2 TOB Tall oil soap (disproportionated) solution ...... 43 ...... TOS Tallow ...... 34 2 TLO Tallow fatty acid ...... 34 2 TFD Tallow fatty alcohol, see Alcohols (C13+) ...... TFA ALY Tallow nitrile ...... 37 ...... TAN TAME, see tert-Amyl methyl ether ...... AYE 1,1,2,2-Tetrachloroethane ...... 36 ...... TEC Tetrachloroethylene, see Perchloroethylene ...... TTE PER Tetradecanol, see Alcohols (C13+) ...... TTN ALY Tetradecene, see the olefins entries ...... TTD Tetradecylbenzene, see Alkyl(C9+) benzenes ...... 32 TDB AKB Tetraethylene glycol ...... 40 ...... TTG Tetraethylene glycol methyl ether, see Poly(2-8)alkylene glycol ...... PAG monoalkyl(C1-C6) ether. Tetraethylenepentamine ...... 7 2 TTP Tetrahydrofuran ...... 41 ...... THF Tetrahydronaphthalene ...... 32 THN 1,2,3,5-Tetramethylbenzene, see Tetramethylbenzene ...... TTB TTC Tetramethylbenzene ...... 32 TTC TTB Tetrapropylbenzene, see Alkyl(C9+)benzenes ...... AKB Tetrasodium salt of EDTA solution, see Ethylenediaminetetraacetic acid, ...... EDS tetrasodium salt solution. Titanium dioxide slurry ...... 43 ...... TDS Titanium tetrachloride ...... 2 TTT

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Toluene ...... 32 TOL Toluenediamine ...... 9 ...... TDA Toluene diisocyanate ...... 12 ...... TDI o-Toluidine ...... 9 ...... TLI Triarylphosphate, see Triisopropylated phenyl phosphates ...... TRA TPL Tributyl phosphate ...... 34 ...... TBP 1,2,4-Trichlorobenzene ...... 36 ...... TCB 1,1,1-Trichloroethane ...... 36 2 TCE 1,1,2-Trichloroethane ...... 36 ...... TCM Trichloroethylene ...... 36 2 TCL 1,2,3-Trichloropropane ...... 36 2 TCN 1,1,2-Trichloro-1,2,2-trifluoroethane ...... 36 ...... TTF Tricresyl phosphate ...... 34 ...... TCO/TCP Tridecane, see n-Alkanes (C10+) ...... TRD ALJ Tridecanoic acid ...... 34 ...... TDO Tridecanol, see Alcohols (C13+) ...... TDN ALY Tridecene, see Olefins (C13+) ...... TDC Tridecyl acetate ...... 34 ...... TAE Tridecylbenzene, see Alkyl(C9+) benzenes ...... 32 2 TRB AKB Triethanolamine ...... 8 2 TEA Triethylamine ...... 7 ...... TEN Triethylbenzene ...... 32 2 TEB Triethylene glycol ...... 40 ...... TEG Triethylene glycol butyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1- ...... PAG C6) ether. Triethylene glycol butyl ether mixture ...... 40 ...... Triethylene glycol dibenzoate ...... 34 ...... TGB Triethylene glycol di-(2-ethylbutyrate) ...... 34 ...... TGD Triethylene glycol ether mixture ...... 40 ...... Triethylene glycol ethyl ether, see Poly(2-8)alkylene glycol monoalkyl(C1- ...... TGE PAG C6) ether. Triethylene glycol methyl ether, see Poly(2-8)alkylene glycol ...... TGY PAG monoalkyl(C1-C6) ether. Triethylenetetramine ...... 7 2 TET Triethyl phosphate ...... 34 ...... TPS Triethyl phosphite ...... 34 2 TPI Triisobutylene ...... 30 ...... TIB Triisooctyl trimellitate ...... 34 ...... Triisopropanolamine ...... 8 ...... TIP Triisopropanolamine salt of 2,4-Dichlorophenoxyacetic acid solution, see ...... DTI 2,4-Dichlorophenoxyacetic acid, Triisopropanolamine salt solution. Triisopropylated phenyl phosphates ...... 34 ...... TPL Trimethylacetic acid ...... 4 ...... TAA Trimethylamine solution ...... 7 ...... TMT Trimethylbenzene ...... 32 2 TRE TME/TMB/TMD Trimethylhexamethylenediamine (2,2,4- and 2,4,4-) ...... 7 ...... THA Trimethylhexamethylene diisocyanate (2,2,4- and 2,4,4-) ...... 12 ...... THI Trimethyl nonanol, see Dodecanol ...... DDN Trimethylol propane polyethoxylate ...... 20 ...... TPR 2,2,4-Trimethyl-1,3-pentanediol diisobutyrate ...... 34 ...... TMQ 2,2,4-Trimethyl-1,3-pentanediol-1-isobutyrate ...... 34 ...... TMP 2,2,4-Trimethyl-3-pentanol-1-isobutyrate ...... 34 ...... Trimethyl phosphite ...... 34 2 TPP 1,3,5-Trioxane ...... 41 2 TRO Triphenylborane, Caustic soda solution ...... 5 ...... TPB Tripropylene, see Propylene trimer ...... PTR Tripropylene glycol ...... 40 ...... TGC Tripropylene glycol methyl ether, see Poly(2-8)alkylene glycol ...... TGM PAG monoalkyl(C1-C6) ether. Trisodium nitrilotriacetate ...... 34 ...... Trisodium phosphate solution ...... 5 ...... TSP Trisodium salt of N-(Hydroxyethyl)ethylenediaminetriacetic acid solution, ...... HET see N-(Hydroxyethyl)ethylenediaminetriacetic acid, trisodium salt solution. Trixylyl phosphate (IMO cargo name), see Trixylenyl phosphate ...... 34 ...... TRP Trixylenyl phosphate ...... 34 ...... TRP Turpentine ...... 30 ...... TPT Ucarsol CR Solvent 302 SG ...... 8 ...... UCS Undecanoic acid ...... 4 ...... UDA Undecanol, see Undecyl alcohol ...... UND Undecene ...... 30 ...... UDC Undecyl alcohol ...... 20 ...... UND Undecylbenzene, see Alkyl(C9+) benzenes ...... UDB AKB

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Urea, Ammonium mono- and di-hydrogen phosphate, Potassium chloride 0 1 UPX solution. Urea, Ammonium nitrate solution (containing Ammonia) ...... 6 ...... UAS Urea, Ammonium nitrate solution (not containing Ammonia) ...... 43 ...... UAT ANU Urea, Ammonium phosphate solution ...... 43 ...... UAP Urea solution ...... 43 ...... URE Valeraldehyde ...... 19 ...... VAK IVA/VAL Vanillin black liquor ...... 5 ...... VBL Vegetable oils, n.o.s...... 34 ...... VEO Including: Beechnut oil Castor oil Cocoa butter Coconut oil Corn oil Cottonseed oil Groundnut oil Hazelnut oil Linseed oil Nutmeg butter Oiticica oil Olive oil Palm kernel oil Palm oil Peel oil (oranges and lemons) Perilla oil Poppy oil Raisin seed oil Rapeseed oil Rice bran oil Safflower oil Salad oil Sesame oil Soya bean oil Sunflower seed oil Tucum oil Tung oil Walnut oil Vegetable acid oils and distillates, n.o.s...... 34 ...... VAO Including: Corn acid oil Cottonseed acid oil Dark mixed acid oil Groundnut acid oil Mixed acid oil Mixed general acid oil Mixed hard acid oil Mixed soft acid oil Rapeseed acid oil Safflower acid oil Soya acid oil Sunflower seed acid oil Vegetable protein solution ...... 43 ...... Vinyl acetate ...... 13 1 VAM Vinyl chloride ...... 35 ...... VCM Vinyl ethyl ether ...... 13 1 VEE Vinylidene chloride ...... 35 ...... VCI Vinyl neodecanate ...... 13 1 VND Vinyltoluene ...... 13 1 VNT Water ...... 43 ...... Waxes: ...... WAX Candelilla ...... 34 ...... WDC Carnauba ...... 34 ...... WCA Paraffin ...... 31 1 WPF Petroleum ...... 33 ...... Wine, see Alcoholic beverages ...... White spirit (low (15-20%) aromatic) ...... 33 ...... WSL WSP Xylene ...... 32 XLX XLM/XLO/XLP Xylenes, Ethylbenzene mixture ...... 32 XEB Xylenols ...... 21 ...... XYL Zinc alkaryl dithiophosphate (C7-C16) ...... 34 ...... ZAD Zinc alkenyl carboxamide ...... 10 ...... ZAA Zinc alkyl dithiophosphate (C3-C14) ...... 34 ...... ZAP

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Zinc bromide, Calcium bromide solution, see Drilling brine (containing Zinc ...... DZB salts). 1. Because of very high reactivity or unusual conditions of carriage or potential compatibility problems, this commodity is not assigned to a specific group in the Compatibility Chart. For additional compatibility information, contact Commandant (G-MSO), U.S. Coast Guard, 2100 Second Street, SW., Washington, DC 20593–0001. Telephone (202) 372–1425. 2. See Appendix I—Exceptions to the Chart.

[USCG 2000–7079, 65 FR 67162, Nov. 8, 2000, as amended by USCG–2006–25697, 71 FR 55746, Sept. 25, 2006; USCG–2008–0906, 73 FR 56510, Sept. 29, 2008; USCG–2009–0702, 74 FR 49236, Sept. 25, 2009; USCG–2010–0759, 75 FR 60003, Sept. 29, 2010]

TABLE II TO PART 150—GROUPING OF Tall oil fatty acid, barium salt 2 CARGOES Urea, Ammonium mono- and di-hydrogen phosphate, Potassium chloride solution 0. UNASSIGNED CARGOES 1. NON-OXIDIZING MINERAL ACIDS Acetone cyanohydrin 1,2 Alkylbenzenesulfonic acid 1,2 Di-(2-ethylhexyl)phosphoric acid Aluminium chloride, Hydrochloric acid so- Ferric chloride solution lution 1 Fluorosilicic acid Ammonium hydrogen phosphate solution 1 Hydrochloric acid Ammonium nitrate solution 1 Phosphoric acid Ammonium thiocyanate, Ammonium Polyaluminum chloride solution thiosulfate solution 1 Benzenesulfonyl chloride 1,2 2. SULFURIC ACIDS gamma-Butyrolactone 1,2 Sulfuric acid 2 Chlorine 1 Sulfuric acid, spent Chlorosulfonic acid 1 Titanium tetrachloride Decyloxytetrahydro-thiophene dioxide 2 tert-Dodecanethiol 2 3. NITRIC ACID 2,4-Dichlorophenoxyacetic acid, Dimethyl- Ferric nitrate, Nitric acid solution amine salt solution 1,2 Dimethylamine salt of 2,4- Nitric acid (70% or less) 1,2 Dichlorophenoxyacetic acid solution 4. ORGANIC ACIDS Diphenylol propane-Epichlorohydrin resins 1 Acetic acid 2 Dodecylbenzenesulfonic acid 1,2 Acrylic acid 2 Dodecyl hydroxypropyl sulfide 2 Butyric acid Ethylene oxide 1 Cashew nut shell oil (untreated) Hydrogen peroxide solutions 1 Citric acid Lactic acid 2 Chloroacetic acid solution Long chain alkaryl sulfonic acid (C16–C60) 2 Chloropropionic acid Magnesium chloride solution 1,2 Decanoic acid Molasses residue 1 2,2-Dichloropropionic acid Motor fuel antiknock compounds con- 2,2-Dimethyloctanoic acid taining Lead alkyls 1 2-Ethylhexanoic acid Naphthalene sulfonic acid-formaldehyde Formic acid 2 copolymer, sodium salt solution 1 Glycolic acid NIAX POLYOL APP 240C 1,2 Glyoxylic acid Nitrating acid 1 n-Heptanoic acid Nitric acid (greater than 70%) 1 Hexanoic acid o-Nitrophenol 1,2 2-Hydroxy-4-(methylthio)butanoic acid Noxious Liquid Substance, n.o.s. (NLS’s) 1 Methacrylic acid Oleum 1,2 Naphthenic acid Phosphorus 1 Neodecanoic acid Phthalate based polyester polyol 2 Nonanoic acid SAP 7001 1 Nonanoic, Tridecanoic acid mixture Sodium chlorate solution 1,2 Octanoic acid Sodium dichromate solution 1,2 n-Pentanoic acid, 2-Methyl butryic acid Sodium hydrogen sulfide, Sodium car- mixture bonate solution 1,2 Pentanoic acid Sodium sulfide, Hydrosulfide solution 1,2 Propionic acid Sodium thiocyanate solution 1,2 Trimethylacetic acid Sulfur 1 Undecanoic acid

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5. CAUSTICS Ethylenediamine 2 Ammonium sulfide solution 2-Ethyl hexylamine Calcium hypochlorite solutions N-Ethylmethylallylamine Caustic potash solution 2 Glyphosate solution (not containing sur- Caustic soda solution 2 factant) Cresylate spent caustic Hexamethylenediamine Cresylic acid, sodium salt solution Hexamethylenediamine solution Kraft black liquor Hexamethylenetetramine Kraft pulping liquors Hexamethylenetetramine solutions Mercaptobenzothiazol, sodium salt solu- Hexamethylenimine tion HiTec 321 Potassium hydroxide solution 2 bis-(Hydrogenated tallow alkyl)methyl Sodium acetate, Glycol, Water mixture amines (containing Sodium hydroxide) Isophorone diamine Sodium aluminate solution Long chain polyetheramine in alkyl(C2– Sodium borohydride, Sodium hydroxide so- C4)benzenes lution Metam sodium solution Sodium carbonate solutions Methylamine solutions Sodium cyanide solution Morpholine 2 Sodium hydrosulfide solution 2 Oleylamine Sodium hydrosulfide, Ammonium sulfide Pentaethylenehexamine solution 2 Sodium hydroxide solution 2 Pentaethylenehexamine, Sodium hypochlorite solution Tetraethylenepentamine mixture Sodium 2-mercaptobenzothiazol solution Phosphate esters, alkyl (C12–C14) amine Sodium naphthenate solution Polyethylene polyamines 2 Sodium nitrite solution Polyolefin amide alkeneamine (C28+) Triphenylborane, Caustic soda solution Polyisobutenamine in aliphatic (C10–C14) Trisodium phosphate solution solvent Vanillin black liquor Poly (C17+) olefin amine Polyolefin amide alkeneamine/Molyb- 6. AMMONIA denum oxysulfide mixture Ammonia, anhydrous Propanil, Mesityl oxide, Isophorone mix- Ammonia, aqueous ture Ammonium hydroxide (28% or less Ammo- Propylamine nia) iso-Propylamine solution Ammonium nitrate, Urea solution (con- Roundup taining Ammonia) Sulfohydrocarbon, long chain (C18+) Urea, Ammonium nitrate solution (con- alkylamine mixture taining Ammonia) Tetraethylenepentamine 2 Triethylamine 7. ALIPHATIC AMINES Triethylenetetramine 2 N-Aminoethylpiperazine Trimethylamine solution Butylamine Trimethylhexamethylene diamine (2,2,4- Cyclohexylamine and 2,4,4-) Dibutylamine Diethylamine 2 8. ALKANOLAMINES Diethylenetriamine 2 2-(2-Aminoethoxy)ethanol Diisobutylamine Aminoethyldiethanolamine, Diisopropylamine Aminoethylethanolamine solution Dimethylamine Aminoethylethanolamine Dimethylamine solution 2-Amino-2-methyl-1-propanol N,N-Dimethylcyclohexylamine Diethanolamine N,N-Dimethyldodecylamine Diethylaminoethanol Di-n-propylamine Diphenylamine, reaction product with Diethylethanolamine 2,2,4-Trimethylpentene Diisopropanolamine Diphenylamines, alkylated Dimethylethanolamine Dodecylamine, Tetradecylamine mixture 2 Ethanolamine Dodecyldimethylamine, Ethoxylated long chain (C16+) Tetradecyldimethylamine mixture alkyloxyalkanamine Ethylamine 2 Methyl diethanolamine Ethylamine solution Propanolamine Ethyleneamine EA 1302 2 Triethanolamine 2 N-Ethyl-n-butylamine Triisopropanolamine N-Ethyl cyclohexylamine Ucarsol CR Solvent 302 SG

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9. AROMATIC AMINES Butyl methacrylate Butyl methacrylate, Decyl methacrylate, Alkyl (C8–C9) phenylamine in aromatic Cetyl-Eicosyl methacrylate mixture solvents Cetyl-Eicosyl methacrylate mixture Aniline Calcium long chain alkyl phenolic amine Decyl acrylate (C8–C40) Dodecyl methacrylate 4-Chloro-2-methylphenoxyacetic acid, Di- Dodecyl-Octadecyl methacrylate mixture methylamine salt solution Dodecyl-Pentadecyl methacrylate mixture Dialkyl (C8–C9) diphenylamines Ethyl acrylate 2,6-Diethylaniline 2-Ethylhexyl acrylate Dimethylamine salt of 4-Chloro-2- Ethyl methacrylate methylphenoxyacetic acid solution 2-Hydroxyethyl acrylate 2 2,6-Dimethylaniline Methacrylic resin in Ethylene dichloride Diphenylamine Methyl acrylate 2-Ethyl-6-methyl-N-(1′-methyl-2- Methyl methacrylate methoxyethyl)aniline Nonyl methacrylate 2-Methyl-6-ethyl aniline Polyalkyl(C18 - C22) acrylate in Xylene 2-Methyl-5-ethyl pyridine Polyalkyl (C10–C18) methacrylate/Ethylene Methyl pyridine Polyalkyl (C10–C20) methacrylate 3-Methylpyridine Propylene copolymer mixture N-Methyl-2-pyrrolidone 2 Roehm monomer 6615 Paraldehyde-Ammonia reaction product Pyridine 15. SUBSTITUTED ALLYLS Pyridine bases Acrylonitrile 2 Toluenediamine Allyl alcohol 2 p-Toluidine Allyl chloride 1,3-Dichloropropene 10. AMIDES Dichloropropene, Dichloropropane mix- Acetochlor tures Acrylamide solution Methacrylonitrile Alkenyl(C11+)amide N,N-Dimethylacetamide 16. ALKYLENE OXIDES N,N-Dimethylacetamide solution Butylene oxide Dimethylformamide Ethylene oxide, Propylene oxide mixtures Formamide Propylene oxide N,N-bis(2-Hydroxyethyl) oleamide Octadecenoamide 17. EPICHLOROHYDRIN Zinc alkenyl carboxamide Chlorohydrins 11. ORGANIC ANHYDRIDES Epichlorohydrin

Acetic anhydride 18. KETONES Alkenylsuccinic anhydride Maleic anhydride Acetone 2 Phthalic anhydride Acetophenone Polyisobutenyl anhydride adduct Amyl methyl ketone Polyolefin anhydride Butyl heptyl ketone Propionic anhydride Camphor oil 1-(4-Chlorophenyl)-4,4-dimethyl pentan-3- 12. ISOCYANATES one 2 Cyclohexanone Diphenylmethane diisocyanate Cyclohexanone, Cyclohexanol mixtures 2 Hexamethylene diisocyanate Diisobutyl ketone Isophorone diisocyanate Ethyl amyl ketone Polymethylene polyphenyl isocyanate Epoxy resin Toluene diisocyanate Ketone residue Trimethylhexamethylene diisocyanate Isophorone 2 (2,2,4- and 2,4,4-) Mesityl oxide 2 13. VINYL ACETATE Methyl amyl ketone Methyl butyl ketone Vinyl acetate Methyl butyl ketone Vinyl ethyl ether Methyl ethyl ketone 2 Vinyl neodecanate Methyl heptyl ketone Vinyl toluene Methyl isoamyl ketone Methyl isobutyl ketone 2 14. ACRYLATES Methyl propyl ketone Butyl acrylate Trifluralin in Xylene

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19. ALDEHYDES Methyl amyl alcohol Methyl butenol Acetaldehyde Methylbutynol Acrolein 2 2-Methyl-2-hydroxy-3-butyne Butyraldehyde Methyl isobutyl carbinol Crotonaldehyde 2 3-Methyl-3-methoxybutanol Decaldehyde 2-Methyl-1,3-propanediol Ethylhexaldehyde Molasses 2-Ethyl-3-propylacrolein 2 Nonyl alcohol 2 Formaldehyde, Methanol mixtures 2 Octanol 2 Formaldehyde solution 2 Octyl alcohol 2 Furfural Penacosa(oxypropane-2,3-diyl)s Glutaraldehyde solution Pentadecanol Glyoxal solutions Polyalkylene oxide polyol 3-Methyl butyraldehyde Polybutadiene, hydroxy terminated Methylolureas 3-(Methylthio)propionaldehyde Polyglycerol Octyl aldehyde Polyglycerine, Sodium salts solution (con- 2 Paraldehyde taining less than 3% Sodium hydroxide) Pentyl aldehyde Polyolefin amide alkeneamine polyol 2 Propionaldehyde Propyl alcohol 2 Valeraldehyde Propylene glycol Rum 20. ALCOHOLS, GLYCOLS Sorbitol solutions Stearyl alcohol Acrylonitrile-Styrene copolymer disper- Tallow fatty alcohol sion in Polyether polyol Tetradecanol Alcoholic beverages Tridecanol Alcohol polyethoxylates Trimethyl nonanol Alcohol polyethoxylates, secondary Trimethylol propane polyethoxylate Alcohols (C13+) Undecanol Amyl alcohol Undecyl alcohol Behenyl alcohol Brake fluid base mixtures 21. PHENOLS, CRESOLS 1,4-Butanediol Butyl alcohol 2 Benzyl alcohol Butylene glycol 2 Carbolic oil Cetyl-Stearyl alcohol Creosote 2 Choline chloride solutions Cresols Cyclohexanol Cresylic acid Decyl alcohol 2 Cresylic acid dephenolized Diacetone alcohol 2 Cresylic acid, tar Diethyl hexanol Dibutylphenols Diisobutyl carbinol 2,4-Dichlorophenol 2,2-Dimethylpropane-1,3-diol Dodecyl phenol Dodecanol o-Ethylphenol Dodecyl alcohol Long chain alkylphenate/phenol sulfide Ethoxylated alcohols, C11-C15 mixture 2-Ethoxyethanol Nonyl phenol Ethyl alcohol 2 Octyl phenol Ethyl butanol Phenol Ethylene chlorohydrin Xylenols Ethylene cyanohydrin 22. CAPROLACTAM SOLUTIONS Ethylene glycol 2 2-Ethylhexanol Caprolactam solution Furfuryl alcohol 2 Glycerine 2 23–29. UNASSIGNED Glycerine, Dioxanedimethanol mixture 30. OLEFINS Glycerol monooleate Heptanol Amylene Hexamethylene glycol Aryl polyolefin (C11–C50) Hexanol Butadiene Hexylene glycol Butadiene, Butylene mixtures (cont. Hydroxy terminated polybutadiene Acetylenes) Icosa(oxypropane-2,3-diyl)s Butene Lauryl polyglucose (50% or less) Butene oligomer 3-Methoxy-1-butanol Butylene Methyl alcohol 2 1,5,9-Cyclododecatriene

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1,3-Cyclopentadiene dimer Hexane 2 Cyclopentadiene, Styrene, Benzene mix- Methane ture Methylcyclohexane Cyclopentene 2-Methyl pentane Decene Nonane Dicyclopentadiene Octane Diisobutylene Pentane Dipentene Propane Dodecene iso-Propylcyclohexane Ethylene Tridecane Ethylene-Propylene copolymer Waxes: Ethylidene norbornene 2 Paraffin 1-Heptene Hexene 32. AROMATIC HYDROCARBONS Isoprene Alkyl(C3–C4)benzenes Isoprene concentrate (Shell) Alkyl(C5–C8)benzenes Latex (ammonia (1% or less) inhibited) Alkyl(C9+)benzenes Methyl acetylene, Propadiene mixture Alkyl acrylate-Vinyl pyridine copolymer Methyl butene in Toluene Methylcyclopentadiene dimer Alkylbenzene, Alkylindane, Alkylindene 2-Methyl-1-pentene mixture (each C12–C17) 4-Methyl-1-pentene Benzene alpha-Methyl styrene Benzene hydrocarbon mixtures (having 10% Myrcene Benzene or more) Nonene Benzene, Toluene, Xylene mixtures 1-Octadecene Butylbenzene Octene Butyl phenol, Formaldehyde resin in Xy- Olefin mixtures lene alpha-Olefins (C6 - C18) mixtures Butyl toluene alpha-Olefins (C13+) 1,3-Pentadiene Cumene Pentene Cymene alpha-Pinene Decylbenzene beta-Pinene Dialkyl(C10 - C14) benzenes Polybutene Diethylbenzene Poly(4+)isobutylene Diisopropylbenzene Polyolefin (molecular weight 300+) Diisopropyl naphthalene Polypropylene Diphenyl Poly(5+)propylene Dodecylbenzene Propylene Dodecyl xylene Propylene-butylene copolymer Ethylbenzene Propylene dimer Ethyl toluene Propylene, Propane, MAPP gas mixture 1-Hexadecylnaphthalene, 1,4-bis(Hexadecyl) Propylene tetramer Isopropylbenzene Propylene trimer Methyl naphthalene Styrene monomer Naphthalene Tetradecene Naphthalene mixture Tridecene Naphthalene still residue Triisobutylene 1-Phenyl-1-xylyl ethane Tripropylene Poly(2+)cyclic aromatics Turpentine Polyolefin amine in alkylbenzenes (C2–C4) Undecene Propylbenzene Pseudocumene 31. PARAFFINS C9 Resinfeed (DSM) 2 Alkanes (C6–C9) Tetradecylbenzene n-Alkanes (C10+) Tetrahydronaphthalene iso- & cyclo-Alkanes (C10–C11) 1,2,3,5-Tetramethylbenzene iso- & cyclo-Alkanes (C12+) Toluene Butane Tridecylbenzene Cycloheptane Triethylbenzene Cyclohexane Trimethylbenzene Cyclopentane Undecylbenzene Decane Xylene Dodecane Xylenes, Ethylbenzene mixture Ethane 33. MISCELLANEOUS HYDROCARBON MIXTURES Ethyl cyclohexane Heptane Alachlor

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Alkylbenzenesulfonic acid, sodium salt so- Pine lutions Rosin Alkyl dithiothiadiazole (C6–C24) Sperm Asphalt blending stocks, roofers flux Spindle Asphalt blending stocks, straight run res- Turbine idue Residual Asphalt emulsion Road Aviation alkylates Transformer Calcuim sulfonate, Calcium carbonate, Hy- Oxyalkylated alkyl phenol formaldehyde drocarbon solvent mixture Petrolatum Coal tar Pine oil Coal tar distillate Polyolefin amine (C28–C250) Coal tar, high temperature Polyolefin amide alkeneamine (C17+) Coal tar pitch Polyolefin amide alkeneamine borate (C28– Decahydronaphthalene C250) Degummed C9 (DOW) Sodium petroleum sulfonate Diphenyl, Diphenyl ether Sulfohydrocarbon (C3–C88) Distillates, flashed feed stocks Waxes: Distillates, straight run Petroleum Drilling mud (low toxicity) (if flammable or Sulfurized fat (C14–C20) combustible) Sulfurized polyolefinamide alkeneamines Gas oil, cracked (C28–C250) Gasoline blending stock, alkylates White spirit (low (15-20%) aromatic) Gasoline blending stock, reformates 34. ESTERS Gasolines: Automotive (not over 4.23 grams lead per Alkane (C14–C17) sulfonic acid, sodium salt gal.) solution Aviation (not over 4.86 grams lead per gal.) Alkyl(C8+)amine, Alkenyl (C12+) acid ester Casinghead (natural) mixture Polymer Alkyl ester copolymer (C6–C18) Straight run Alkyl(C7–C9) nitrates 2 Jet Fuels: Alkyl (C8–C40) phenol sulfide JP-4 Alkyl (C10–C20, saturated and unsaturated) JP-5 phosphite JP-8 Alkyl sulfonic acid ester of phenol Kerosene Alkylaryl phosphate mixtures (more than Mineral spirits 40% Naphtha: Amyl acetate Coal tar solvent Animal and Fish oils, n.o.s. Petroleum Animal and Fish acid oils and distillates, Solvent n.o.s. Stoddard solvent Barium long chain alkaryl (C11–C50) Varnish Makers’ and Painters’ sulfonate Oil, fuel: Barium long chain alkyl(C8–C14)phenate No. 1 sulfide No. 1-D Benzene tricarboxylic acid trioctyl ester No. 2 Benzyl acetate No. 2-D Butyl acetate No. 4 Butyl benzyl phthalate No. 5 n-Butyl butyrate No. 6 Butyl formate Oil, misc: iso-Butyl isobutyrate Aliphatic n-Butyl propionate Aromatic Calcium alkyl(C9)phenol sulfide, polyolefin Clarified phosphorosulfide mixture Coal Calcium long chain alkaryl sulfonate (C11– Crude C50) Diesel Calcium long chain alkyl phenate sulfide Gas, high pour (C8–C40) Heartcut distillate Calcium long chain alkyl phenates Linseed Calcium long chain alkyl salicylate (C13+) Lubricating Calcium nitrate, Magnesium nitrate, Po- Mineral tassium chloride solution Mineral seal Calcium nitrate solution Motor Cobalt naphthenate in solvent naphtha Neatsfoot Coconut oil, fatty acid Penetrating Copper salt of long chain alkanoic acids

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Cottonseed oil, fatty acid Magnesium long chain alkyl phenate sul- Cyclohexyl acetate fide (C8–C20) Decyl acetate Magnesium long chain alkyl salicylate Dialkyl(C7 - C13) phthalates (C11+) Dibutyl hydrogen phosphonate 3-Methoxybutyl acetate Dibutyl phthalate 1-Methoxy-2-propyl acetate Diethylene glycol butyl ether acetate Methyl acetate Diethylene glycol dibenzoate Methyl acetoacetate Diethylene glycol ethyl ether acetate Methyl amyl acetate Diethylene glycol methyl ether acetate Methyl butyrate Diethylene glycol phthalate Methyl formate Di-(2-ethylhexyl)adipate 3-Methyl-3-methoxybutyl acetate Di-(2-ethylhexyl)phthalate Methyl salicylate Diethyl phthalate Metolachlor Diethyl sulfate Naphthalene sulfonic acid, sodium salt so- Diheptyl phthalate lution (40% or less) Dihexyl phthalate Nonyl acetate Di-n-hexyl adipate n-Octyl acetate Diisobutyl phthalate Octyl decyl adipate Diisodecyl phthalate Oil, edible: Diisononyl adipate Beechnut Diisononyl phthalate Castor Diisooctyl phthalate Cocoa butter Dimethyl adipate Coconut 2 Dimethylcyclicsiloxane hydrolyzate Cod liver Dimethyl glutarate Corn 2 Dimethyl hydrogen phosphite Cotton seed Dimethyl naphthalene sulfonic acid, so- Fish 2 2 dium salt solution Groundnut Dimethyl phthalate Hazelnut Dimethyl polysiloxane Lard Dimethyl succinate Lanolin Dinonyl phthalate Nutmeg butter Dioctyl phthalate Olive Diphenyl tolyl phosphate, less than 0.02% Palm 2 ortho-isomer) Palm kernel Dipropylene glycol dibenzoate Peanut Dithiocarbamate ester (C7–C35) Poppy Ditridecyl adipate Poppy seed Ditridecyl phthalate Raisin seed 2-Dodecenylsuccinic acid, dipotassium salt Rapeseed solution Rice bran Diundecyl phthalate Safflower 2-Ethoxyethyl acetate Salad Ethyl acetate Ethyl acetoacetate Sesame Ethyl butyrate Soya bean Ethylene carbonate Sunflower Ethylene glycol acetate Sunflower seed Ethylene glycol butyl ether acetate Tucum Ethylene glycol diacetate Vegetable Ethylene glycol ethyl ether acetate Walnut Ethylene glycol methyl ether acetate Oil, misc: Ethyl-3-ethoxypropionate Animal Ethyl hexyl phthalate Coconut oil, fatty actid methyl ester Ethyl propionate Cotton seed oil, fatty acid Ethyl propionate Lanolin Fatty acids (saturated, C14+) Palm kernel oil, fatty acid methyl ester Glycerol polyalkoxylate Palm oil, methyl ester Glyceryl triacetate Pilchard Glycidyl ester of C10 trialkyl acetic acid Perilla Gylcidyl ester of tridecylacetic acid Soapstock Heptyl acetate Soyabean (epoxidized) Hexyl acetate Tall Lauric acid Tall, fatty acid 2 Lecithin Tung Magnesium long chain alkaryl sulfonate Olefin/Alkyl ester copolymer (molecular (C11–C50) weight 2000+)

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Oleic acid 36. HALOGENATED HYDROCARBONS Palm kernel acid oil Benzyl chloride Palm kernel acid oil, methyl ester Bromochloromethane Palm stearin Carbon tetrachloride 2 n-Pentyl propionate Catoxid feedstock 2 Poly(2-8)alkylene glycol monoalkyl(C1–C6) Chlorinated paraffins (C10 - C13) ether acetate Chlorinated paraffins (C14 - C17) Polydimethylsiloxane Chlorobenzene Polyferric sulfate solution Chlorodifluoromethane Polymethylsiloxane Chloroform Poly(20)oxyethylene sorbitan monooleate Chlorotoluene Polysiloxane Dibromomethane Polyolefin aminoester salt Dibutylphenols Polyolefin ester (C28–C250) 3,4-Dichloro-1-butene Polyolefin phosphorosulfide, barium deriv- Dichlorobenzene ative (C28–C250) Dichlorodifluoromethane Potassium formate solution 1,1-Dichloroethane Potassium oleate 1,6-Dichlorohexane Potassium salt of polyolefin acid 2,2′-Dichloroisopropyl ether Propyl acetate Dichloromethane Propylene carbonate Dichloropropane Propylene glycol methyl ether acetate Ethyl chloride Sodium acetate, Glycol, Water mixture Ethylene dibromide (not containing Sodium hydroxide) 2 Ethylene dichloride 2 Sodium acetate solution Methyl bromide Sodium benzoate solution Methyl chloride Sodium dimethyl naphthalene sulfonate Monochlorodifluoromethane solution 2 n-Propyl chloride Sodium long chain alkyl salicylate (C13+) Pentachloroethane Sodium naphthalene sulfonate solution Perchloroethylene Soyabean oil (epoxidized) 1,1,2,2-Tetrachloroethane Stearic acid 1,2,3-Trichlorobenzene Tall oil 1,2,4-Trichlorobenzene Tall oil fatty acid (Resin acids less than 1,1,1-Trichloroethane 2 20%) 2 1,1,2-Trichloroethane Tallow 2 Trichloroethylene 2 Tallow fatty acid 2 1,2,3-Trichloropropane Tributyl phosphate 1,1,2-Trichloro-1,2,2-trifluoroethane Tricresyl phosphate Tridecanoic acid 37. NITRILES Tridecyl acetate Acetonitrile Triethylene glycol dibenzoate Adiponitrile Triethylene glycol di-(2-ethylbutyrate) Lactonitrile solution Triethyl phosphate Propionitrile Triethyl phosphite 2 Tallow nitrile Triisooctyl trimellitate 2 Triisopropylated phenyl phosphates 38. CARBON DISULFIDE 2,2,4-Trimethyl-1,3-pentanediol diisobutyrate Carbon disulfide 2,2,4-Trimethyl-1,3-pentanediol-1-iso- 39. SULFOLANE butyrate 2,2,4-Trimethyl-3-pentanol-1-isobutyrate Sulfolane Trimethyl phosphite 2 Trisodium nitrilotriacetate 40. GLYCOL ETHERS Trixylyl phosphate Alkyl (C7-C11) phenol poly(4-12)ethoxylate Trixylenyl phosphate Alkyl (C9-C15) phenyl propoxylate Vegetable acid oils and distillates, n.o.s. Diethylene glycol 2 Vegetable oils, n.o.s. Diethylene glycol butyl ether Waxes: Diethylene glycol dibutyl ether Carnauba Diethylene glycol diethyl ether Zinc alkaryl dithiophosphate (C7–C16) Diethylene glycol ethyl ether Zinc alkyl dithiophosphate (C3–C14) Diethylene glycol methyl ether Diethylene glycol n-hexyl ether 35. VINYL HALIDES Diethylene glycol phenyl ether Vinyl chloride Diethylene glycol propyl ether Vinylidene chloride Dipropylene glycol

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Dipropylene glycol butyl ether Methyl-tert-butyl ether 2 Dipropylene glycol methyl ether Methyl tert-pentyl ether Ethoxy triglycol Propyl ether Ethylene glycol hexyl ether Tetrahydrofuran Ethylene glycol methyl butyl ether 1,3, 5-Trioxane Ethylene glycol monoalkyl ethers Polyether (molecular weight 2000+) Ethylene glycol tert-butyl ether Ethylene glycol butyl ether 42. NITROCOMPOUNDS Ethylene glycol dibutyl ether o-Chloronitrobenzene Ethylene glycol ethyl ether Dinitrotoluene Ethylene glycol isopropyl ether Nitrobenzene Ethylene glycol methyl ether Nitroethane Ethylene glycol phenyl ether Nitroethane, 1-Nitropropane mixture Ethylene glycol phenyl ether, Diethylene Nitropropane glycol phenyl ether mixture Nitropropane, Nitroethane mixtures Ethylene glycol propyl ether Nitrotoluene Hexaethylene glycol Methoxy triglycol 43. MISCELLANEOUS WATER SOLUTIONS Nonyl phenol poly(4+)ethoxylates Pentaethylene glycol methyl ether Alkyl polyglucoside solutions Polyalkylene glycol butyl ether Aluminum sulfate solution 2 Polyalkylene glycols, Polyalkylene glycol 2-Amino-2-hydroxymethyl-1,3-propanediol monoalkyl ethers mixtures solution Polyethylene glycols Ammonium bisulfite solution 2 Polyethylene glycol dimethyl ether Ammonium lignosulfonate solution Poly(2-8)alkylene glycol monoalkyl(C1–C6) Ammonium nitrate, Urea solution (not ether containing Ammonia) Polyethylene glycol monoalkyl ether Ammonium polyphosphate solution Polypropylene glycol methyl ether Ammonium sulfate solution Polypropylene glycols Ammonium thiosulfate solution Poly(tetramethylene ether) glycols (mw Sulfonated polyacrylate solutions 2 950–1050) Calcium bromide solution Polytetramethylene ether glycol Calcium chloride solution n-Propoxypropanol Calcium lignosulfonate solution Propylene glycol monoalkyl ether Caramel solutions Propylene glycol ethyl ether Clay slurry Propylene glycol methyl ether Corn syrup Propylene glycol n-butyl ether Dextrose solution Propylene glycol phenyl ether 2,4-Dichlorophenoxyacetic acid, Propylene glycol propyl ether Diethanolamine salt solution Tetraethylene glycol 2,4-Dichlorophenoxyacetic acid, Tetraethylene glycol methyl ether Triisopropanolamine salt solution 2 Triethylene glycol Diethanolamine salt of 2,4- Triethylene glycol butyl ether Dichlorophenoxyacetic acid solution Triethylene glycol butyl ether mixture Diethylenetriamine pentaacetic acid, Triethylene glycol ether mixture pentasodium salt solution Triethylene glycol ethyl ether Dodecyl diphenyl ether disulfonate solu- Triethylene glycol methyl ether tion Tripropylene glycol Drilling brine (containing Calcium, Potas- Tripropylene glycol methyl ether sium, or Sodium salts) Drilling brine (containing Zinc salts) 41. ETHERS Drilling mud (low toxicity) (if non-flam- Alkaryl polyether (C9–C20) mable or non-combustible) tert-Amyl methyl ether Ethylenediaminetetracetic acid, Butyl ether tetrasodium salt solution 2,2′-Dichloroethyl ether Ethylene-Vinyl acetate copolymer emul- Diethyl ether sion Diglycidyl ether of Bisphenol A Ferric hydroxyethylethylenediamine Diglycidyl ether of Bisphenol F triacetic acid, trisodium salt solution 2 Dimethyl furan Fish solubles (water based fish meal extracts) 1,4-Dioxane Fructose solution Diphenyl ether Fumaric adduct of Rosin, water dispersion Diphenyl ether, Diphenyl phenyl ether Hexamethylenediamine adipate solution mixture N-(Hydroxyethyl)ethylene diamine Ethyl tert-butyl ether 2 triacetic acid, trisodium salt solution Ethyl ether Kaolin clay slurry Long chain alkaryl polyether (C11–C20) Latex, liquid synthetic

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Lignin liquor Member of reactive group Compatible with Liquid Streptomyces solubles l-Lysine solution Acrylonitrile (15) ...... Triethanolamine (8) N-Methylglucamine solution 1,3-Butylene glycol (20) ...... Morpholine (7) Naphthenic acid, sodium salt solution 1,4-Butylene glycol (20) ...... Ethylamine (7) Potassium chloride solution Triethanolamine (8) Potassium thiosulfate solution gamma-Butyrolactone (0) ...... N-Methyl-2-pyrrolidone (9) Rosin soap (disproportionated) solution Caustic potash, 50% or less Isobutyl alcohol (20) Sewage sludge, treated (5). Ethyl alcohol (20) Sodium alkyl sulfonate solution Ethylene glycol (20) Sodium hydrogen sulfite solution Isopropyl alcohol (20) Sodium lignosulfonate solution Methyl alcohol (20) Sodium polyacrylate solution 2 iso-Octyl alcohol (20) Sodium salt of Ferric Caustic soda, 50% or less (5) Butyl alcohol (20) hydroxyethylethylenediamine triacetic tert-Butyl alcohol, Methanol mixtures acid solution Decyl alcohol (20) 2 Sodium silicate solution iso-Decyl alcohol (20) Sodium sulfide solution Diacetone alcohol (20) Sodium sulfite solution Diethylene glycol (40) Sodium tartrates, Sodium succinates solu- Dodecyl alcohol (20) tion Ethyl alcohol (20) Sulfonated polyacrylate solutions 2 Ethyl alcohol (40%, whiskey) (20) Tall oil soap (disproportionated) solution Ethylene glycol (20) Tetrasodium salt of EDTA solution Ethylene glycol, Diethylene Titanium dioxide slurry glycol mixture (20) Triisopropanolamine salt of 2,4- Ethyl hexanol (Octyl alcohol) Dichlorophenoxyacetic acid solution (20) Urea, Ammonium nitrate solution (not Methyl alcohol (20) containing Ammonia) Nonyl alcohol (20) iso-Nonyl alcohol (20) Urea, Ammonium phosphate solution Propyl alcohol (20) Urea solution iso-Propyl alcohol (20) Vegetable protein solution (hydrolysed) Propylene glycol (20) Water Sodium chlorate solution (0) iso-Tridecanol (20) FOOTNOTES TO TABLE II tert-Dodecanethiol (0) ...... Acrylonitrile (15) 1 Because of very high reactivity or un- Diisodecyl phthalate (34) Methyl ethyl ketone (18) usual conditions of carriage or potential iso-Nonyl alcohol (20) compatibility problems, this product is not Perchloroethylene (36) assigned to a specific group in the Compat- iso-Propyl alcohol (20) ibility Chart. For additional compatibility Tall oil, crude information, contact Commandant (G-MSO), Dodecyl and Tetradecylamine Tall oil, fatty acid (34) U.S. Coast Guard, 2100 Second Street, SW., mixture (7). Washington, DC 20593–0001. Telephone (202) Ethylenediamine (7) ...... Butyl alcohol (20) 372–1425. tert-Butyl alcohol (20) 2 Butylene glycol (20) See Appendix I—Exceptions to the Chart. Creosote (21) [CGD 88–100, 54 FR 40012, Sept. 29, 1989] Diethylene glycol (40) Ethyl alcohol (20) EDITORIAL NOTE: For FEDERAL REGISTER ci- Ethylene glycol (20) tations affecting Table II to part 150, see the Ethyl hexanol (20) List of CFR Sections Affected, which appears Glycerine (20) Isononyl alcohol (20) in the Finding Aids section of the printed Isophorone (18) volume and at www.fdsys.gov. Methyl butyl ketone (18) Methyl iso-butyl ketone (18) APPENDIX I TO PART 150—EXCEPTIONS Methyl ethyl ketone (18) TO THE CHART Propyl alcohol (20) Propylene glycol (20) (a). The binary combinations listed below Oleum (0) ...... Hexane (31) have been tested as prescribed in Appendix Dichloromethane (36) III and found not to be dangerously reactive. Perchloroethylene (36) These combinations are exceptions to the 1,2-Propylene glycol (20) ...... Diethylenetriamine (7) Compatibility Chart (Figure 1) and may be Polyethylene polyamines (7) Triethylenetetramine (7) stowed in adjacent tanks. Sodium dichromate, 70% (0) Methyl alcohol (20) Member of reactive group Compatible with Sodium hydrosulfide solution Methyl alcohol (20) (5). Acetone (18) ...... Diethylenetriamine (7) Iso-Propyl alcohol (20) Acetone cyanohydrin (0) ...... Acetic acid (4) Sulfuric acid (2) ...... Coconut oil (34)

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Member of reactive group Compatible with 2,4-Dichlorophenoxyacetic acid, Dimethyl- amine salt solution (0) is not compatible Coconut oil acid (34) with Groups 1-5, 11, 12, and 16. Palm oil (34) Tallow (34) Diethylenetriamine (7) is not compatible with 1,2,3-Trichloropropane, Group 36, Hal- Sulfuric acid, 98% or less (2) Choice white grease tallow (34) ogenated hydrocarbons. Dimethyl hydrogen phosphite (34) is not (b). The binary combinations listed below compatible with Groups 1 and 4. have been determined to be dangerously re- Dimethyl naphthalene sulfonic acid, sodium active, based on either data obtained in the salt solution (34) is not compatible with literature or on laboratory testing which has Group 12, Formaldehyde, and strong oxi- been carried out in accordance with proce- dizing agents. dures prescribed in Appendix III. These com- Dodecylbenzenesulfonic acid (0) is not combinations are exceptions to the Compat- patible with oxidizing agents and Groups 1, ibility Chart (Figure 1) and may not be 2, 3, 5, 6, 7, 8, 9, 15, 16, 18, 19, 30, 34, and 37. stowed in adjacent tanks. Ethylenediamine (7) and Ethyleneamine EA Acetone cyanohydrin (0) is not compatible 1302 (7) are not compatible with either with Groups 1-12, 16, 17 and 22. Ethylene dichloride (36) or 1,2,3- Acrolein (19) is not compatible with Group 1, Trichloropropane (36). Non-Oxidizing Mineral Acids. Ethylene dichloride (36) is not compatible Acrylic acid (4) is not compatible with Group with Ethylenediamine (7) or 9, Aromatic Amines. Ethyleneamine EA 1302 (7). Acrylonitrile (15) is not compatible with Ethylidene norbornene (30) is not compatible Group 5 (Caustics). with Groups 1-3 and 5-8. Alkylbenzenesulfonic acid (0) is not compat- 2-Ethyl-3-propylacrolein (19) is not compatible with Groups 1-3, 5-9, 15, 16, 18, 19, 30, 34, ible with Group 1, Non-Oxidizing Mineral 37, and strong oxidizers. Acids. Allyl alcohol (15) is not compatible with Ethyl tert-butyl ether (41) is not compatible Group 12, Isocyanates. with Group 1, Non-oxidizing mineral acids. Alkyl(C7–C9) nitrates (34) is not compatible Ferric hydroxyethylethylenediamine with Group 1, Non-oxidizing Mineral Acids. triacetic acid, Sodium salt solution (43) is Aluminum sulfate solution (43) is not com- not compatible with Group 3, Nitric acid. patible with Groups 5-11. Fish oil (34) is not compatible with Sulfuric Ammonium bisulfite solution (43) is not acid (2). compatible with Groups 1, 3, 4, and 5. Formaldehyde (over 50%) in Methyl alcohol Benzenesulfonyl chloride (0) is not compat- (over 30%) (19) is not compatible with ible with Groups 5-7, and 43. Group 12, Isocyanates. 1,4-Butylene glycol (20) is not compatible Formic acid (4) is not compatible with Fur- with Caustic soda solution, 50% or less (5). fural alcohol (20). gamma-Butyrolactone (0) is not compatible Furfuryl alcohol (20) is not compatible with with Groups 1-9. Group 1, Non-Oxidizing Mineral Acids and C9 Resinfeed (DSM) (32) is not compatible Formic acid (4). with Group 2, Sulfuric acid. 2-Hydroxyethyl acrylate (14) is not compat- Carbon tetrachloride (36) is not compatible ible with Group 5, 6, or 12. with Tetraethylenepentamine or Isophorone (18) is not compatible with Group Triethylenetetramine, both Group 7, Ali- 8, Alkanolamines. phatic amines. Magnesium chloride solution (0) is not com- Catoxid feedstock (36) is not compatible with patible with Groups 2, 3, 5, 6 and 12. Group 1, 2, 3, 4, 5, or 12. Mesityl oxide (18) is not compatible with Caustic soda solution, 50% or less (5) is not Group 8, Alkanolamines. compatible with 1,4-Butylene glycol (20). Methacrylonitrile (15) is not compatible with 1-(4-Chlorophenyl)-4,4-dimethyl pentan-3-one Group 5 (Caustics). (18) is not compatible with Group 5 Methyl tert-butyl ether (41) is not compat- (Caustics) or 10 (Amides). ible with Group 1, Non-oxidizing Mineral Crotonaldehyde (19) is not compatible with Acids. Group 1, Non-Oxidizing Mineral Acids. NIAX POLYOL APP 240C (0) is not compat- Cyclohexanone, Cyclohexanol mixture (18) is ible with Group 2, 3, 5, 7, or 12. not compatible with Group 12, Isocyanates. o-Nitrophenol (0) is not compatible with 2,4-Dichlorophenoxyacetic acid, Groups 2, 3, and 5-10. Triisopropanolamine salt solution (43) is Octyl nitrates (all isomers), see Alkyl(C7–C9) not compatible with Group 3, Nitric Acid. nitrates.

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Oleum (0) is not compatible with Sulfuric Trichloroethylene (36) is not compatible acid (2) and 1,1,1-Trichloroethane (36). with Group 5, Caustics. Phthalate based polyester polyol (0) is not Triethylenetetramine (7) is not compatible compatible with group 2, 3, 5, 7 and 12. with Carbon tetrachloride, or 1,2,3- Polyglycerine, Sodium salts solution (20) is Trichloropropane, both Group 36, Halo- not compatible with Groups 1, 4, 11, 16, 17, genated hydrocarbons. 19, 21 and 22. Triethyl phosphite (34) is not compatible Propylene, Propane, MAPP gas mixture with Groups 1, and 4. (containing 12% or less MAPP gas) (30) is Trimethyl phosphite (34) is not compatible not compatible with Group 1 (Non-oxi- with Groups 1 and 4. dizing mineral acids), Group 36 (Halo- 1,3,5-Trioxane (41) is not compatible with genated hydrocarbons), nitrogen dioxide, Group 1 (non-oxidizing mineral acids) and oxidizing materials, or molten sulfur. Group 4 (Organic acids). Sodium acetate, Glycol, Water mixture (1% or less Sodium hydroxide) (34) is not com- [CGD 88–100, 54 FR 40012, Sept. 29, 1989 as patible with Group 12 (Isocyanates). amended by CGD 88–100, 55 FR 17277, Apr. 24, 1990; CDG 92–100, 59 FR 17026, Apr. 11, 1994; Sodium chlorate solution (50% or less) (0) is CGD 94–902, 60 FR 34043, June 29, 1995; CGD not compatible with Groups 1-3, 5, 7, 8, 10, 95–900, 60 FR 34050, June 29, 1995; USCG 2000– 12, 13, 17 and 20. 7079, 65 FR 67182, Nov. 8, 2000] Sodium dichromate solution (70% or less) (0) is not compatible with Groups 1-3, 5, 7, 8, APPENDIX II TO PART 150—EXPLANATION 10, 12, 13, 17 and 20. OF FIGURE 1 Sodium dimethyl naphthalene sulfonate solution (34) is not compatible with Group 12, Definition of a hazardous reaction— As a Formaldehyde and strong oxidizing agents. first approximation, a mixture of two car- Sodium hydrogen sulfide, Sodium carbonate goes is considered hazardous when, under solution (0) is not compatible with Groups specified condition, the temperature rise of 6 (Ammonia) and 7 (Aliphatic amines). the mixture exceeds 25 °C or a gas is evolved. Sodium hydrosulfide (5) is not compatible It is possible for the reaction of two cargoes with Groups 6 (Ammonia) and 7 (Aliphatic to produce a product that is significantly amines). more flammable or toxic than the original cargoes even though the reaction is non-haz- Sodium hydrosulfide, Ammonium sulfide so- ardous from temperature or pressure consid- lution (5) is not compatible with Groups 6 erations, although no examples of such a re- (Ammonia) and 7 (Aliphatic amines). action are known at this time. Sodium polyacrylate solution (43) is not Chart format— There are different degrees compatible with Group 3, Nitric Acid. of reactivity among the various cargoes. Sodium silicate solution (43) is not compat- Many of them are relatively non-reactive: ible with Group 3, Nitric Acid. For example, aromatic hydrocarbons or Sodium sulfide, hydrosulfide solution (0) is paraffins. Others will form hazardous com- not compatible with Groups 6 (Ammonia) binations with many groups: For example, and 7 (Aliphatic amines). the inorganic acids. Sodium thiocyanate (56% or less) (0) is not The cargo groups in the compatibility compatible with Groups 1-4. chart are separated into two categories: 1 through 22 are ‘‘Reactive Groups’’ and 30 Sulfonated polyacrylate solution (43) is not through 43 are ‘‘Cargo Groups’’. Left unas- compatible with Group 5 (Caustics). signed and available for future expansion are Sulfuric acid (2) is not compatible with Fish groups 23 through 29 and those past 43. Reac- oil (34), or Oleum (0). tive Groups contain products which are Tall oil fatty acid (Resin acids less than 20%) chemically the most reactive; dangerous (34) is not compatible with Group 5, combinations may result between members Caustics. of different Reactive Groups and between Tallow fatty acid (34) is not compatible with members of Reactive Groups and Cargo Group 5, Caustics. Groups. Products assigned to Cargo Groups, however, are much less reactive; dangerous Tetraethylenepentamine (7) is not compat- combinations involving these can be formed ible with Carbon tetrachloride, Group 36, only with members of certain Reactive Halogenated hydrocarbons. Groups. Cargo Groups do not react hazard- 1,2,3-Trichloropropane (36) is not compatible ously with one another. with Diethylenetriamine, Ethylene- Using the Compatibility Chart— The fol- diamine, Ethyleaneamine EA 1302, or lowing procedure explains how the compat- Triethylenetetramine, all Group 7, Ali- ibility chart should be used to find compat- phatic amines. ibility information: 1,1,1-Trichloroethane (36) is not compatible (1) Determine the group numbers of the with Oleum (0). two cargoes by referring to the alphabetical

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listing of cargoes and the corresponding so that unexpected reactions can be safely groups (Table I). Many cargoes are listed contained. All tests should be performed in a under their parent names; unless otherwise well-ventilated laboratory hood provided indicated, isomers or mixtures of isomers of with shields. a particular cargo are assigned to the same Testing chemicals other than liquids—The group. For example, to find the group num- procedure outlined below was developed for ber for Isobutyl Alcohol, look under the par- chemicals which are liquids at ambient tem- ent name Butyl Alcohol. Similarly, the peratures. If one or both chemicals are nor- group number for para-Xylene is found under mally shipped at elevated temperatures, the the entry Xylene. If a cargo cannot be found same procedure may be followed except the in this listing, contact the Coast Guard for a chemicals are tested at their respective ship- group determination (see § 150.140). ping temperatures and the oil bath in Step 3 (2) If both group numbers are between 30 is maintained at a level 25 °C above the high- and 43 inclusive, the products are compatible er temperature. This information is then in- and the chart need not be used. dicated on the data sheet. If one of the (3) If both group numbers do not fall be- chemicals is a gas at ambient temperatures, tween 30 and 43 inclusive, locate one of the consult the Coast Guard for additional in- numbers on the left of the chart (Cargo structions before proceeding with the com- Groups) and the other across the top (Reac- patibility test. tive Groups). (Note that if a group number is between 30 and 43, it can only be found on Step 1 the left side of the chart.) The box formed by Objective—To determine if the test chemi- the intersection of the column and row con- cals react violently and present a safety haz- taining the two numbers will contain one of ard in further tests. the following: Procedure—Place 0.5ml of one (A) of the (a) Blank—The two cargoes are compat- test chemicals in a 25×150mm test tube. ible. Clamp the test tube to a stand behind a safe- (b) ‘‘X’’—The two cargoes are not compat- ty shield (in a hood). Carefully add from a ible. dropper 0.5ml of the other substance (B). (Note that reactivity may vary among the Shake to induce mixing. If no immediate re- group members. Refer to Table I or Table II action occurs, retain the mixture for at least to find whether the products in question are 10 minutes to check for a delayed reaction. referenced by a footnote which indicates Results—If a violent reaction occurs, such that exceptions exist and are listed in Ap- as sputtering, boiling of reactants or release pendix I. Unless the combination is specifi- of fumes, record the results on the Data cally mentioned in Appendix I, it is compat- Sheet (appendix IV) and do not proceed to ible.) Step 2. If no reaction or a minor reaction oc- [CGD 75–59, 45 FR 70263, Oct. 23, 1980, as curs, proceed to Step 2. amended by CGD 83–047, 50 FR 33046, Aug. 16, Step 2 1985] Objective—To determine the heat of reac- EXAMPLES tion of two chemicals on mixing under specified conditions. Combination Groups Compatible Procedure—These separate mixes of the proposed binary combination will be tested. Butyraldehyde/Acetic Acid ...... 19/4 Yes. These are 2 ml : 18 ml, 10 ml : 10 ml, and 18 Allyl Alcohol/Toluene Diisocyanate ... 15/12 No. Decene/Ethyl Benzene ...... 30/32 Yes. ml : 2 ml, respectively, to result in a final Ethanolamine/Acetone ...... 8/18 Yes. mixture of about 20 ml in each case. Ammonia/Dimethylformamide ...... 6/10 No. A reference-junctioned thermocouple is prepared by inserting two lengths of 20 gauge or finer iron-constantan or chromelalumel APPENDIX III TO PART 150—TESTING duplex thermocouple wire into glass capilary PROCEDURES FOR DETERMINING EX- sheaths. The common wire of each probe is CEPTIONS TO THE CHART joined, while the other wire of each is connected to a strip-chart recorder. The thermo- EXPERIMENTAL PROCEDURE FOR EVALUATING couple probe which produces a negative pen BINARY CHEMICAL REACTIVITY deflection upon warming is the reference General safety precautions—Chemical reac- junction and is placed in a test tube of water tivity tests have, by their nature, serious po- at ambient laboratory temperature. The tential for injuring the experimenter or de- other probe is placed near the bottom of a stroying equipment. The experimenter Dewar flask of about 300ml capacity, such should 1) have knowledge of the magnitude that the thermocouple will be below the sur- of the reactivity to be expected, 2) use ade- face of the test mixture. The Dewar flask is quate facilities and protective equipment to equipped with a magnetic stirrer having a prevent injury from splatter of materials or stirring bar coated with an inert material release of fumes, and 3) start on a small scale such as a flourinated hydrocarbon.

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Start the temperature recorder and stirrer. about 10ml (a ratio of 1ml:9ml, 5ml:5ml, or Deliver the test chemicals to the Dewar 9ml:1ml). If no reaction was observed in Step Flask simultaneously from separate grad- 2, use a ratio of 5ml:5ml. Using the thermo- uated syringes. If an exothermic reaction oc- couple prepared for Step 2, insert the ref- curs, continue the test until the maximum erence probe into a 25×150mm test tube con- temperature is reached and begins to sub- taining 10ml of water. Place the other probe side. If no apparent reaction occurs, continue into an empty test tube. Start the tempera- the test for at least 30 minutes to check for ture recorder and add the two chemicals of a delayed reaction. Stop agitation and ob- the combination, one at a time, to the empty serve the mixture at five-minute intervals to test tube. Lower the two test tubes into an determine if the mixture is miscible, if gases oil bath maintained at 50 ±2 °C. Hold the are evolved, or if other visible changes occur. samples in the oil bath until the maximum In the interest of safety, a mirror can be temperature differential is recorded, and in used for these observations. Repeat the all cases at least 15 minutes. Observe the above test for the other mixture combina- test mixture to determine if gases are tions. evolved or if other visible changes occur. Results—Record the results in the appro- Follow prescribed safety precautions. priate places on the Data Sheet. If no reac- Results—Record the maximum differential tion occurs or if the temperature rise is less temperature measured, the time required to than 25 °C, proceed to Step 3. If the observed reach this temperature, and any other obser- temperature rise exceeds 25 °C or gases are vations in the proper space on the Data evolved, do not proceed to Step 3. Sheet. Send a copy of the Data Sheet for each bi- Step 3 nary chemical mixture tested to: Com- Objective—To determine if exothermic re- mandant (G-MSO), U.S. Coast Guard, Wash- actions occur at temperatures up to 50 °C. ington, DC 20593–0001. Procedure—If a non-hazardous reaction oc- [CGD 75–59, 45 FR 70263, Oct. 23, 1980, as curred in Step 2, the ratio of chemicals amended by CGD 82–063b, 48 FR 4782, Feb. 3, which resulted in the greatest temperature 1983; CGD 83–047, 50 FR 33046, Aug. 16, 1985; rise will be tested. Fresh chemicals will be CGD 88–070, 53 FR 34535, Sept. 7, 19885; CGD used with a total volume for this test of 96–041, 61 FR 50731, Sept. 27, 1996]

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APPENDIX IV TO PART 150—DATA SHEET

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PART 151—BARGES CARRYING Subpart 151.02—Equivalents BULK LIQUID HAZARDOUS MATE- 151.02–1 Conditions under which equivalents RIAL CARGOES may be used. 151.02–5 Design of unmanned barges. Subpart 151.01—General Subpart 151.03—Definitions Sec. 151.03–1 Definitions of terms. 151.01–1 Applicability. 151.03–3 Angle of downflooding. 151.01–2 Incorporation by reference. 151.03–5 Approved. 151.01–3 [Reserved] 151.03–7 Barge. 151.01–5 [Reserved] 151.03–9 Cargo. 151.01–10 Application of vessel inspection 151.03–11 Coastwise. regulations. 151.03–13 Cofferdam. 151.01–15 Dangerous cargoes not specifically 151.03–15 Commandant. named. 151.03–17 Compatible. 151.01–20 Use of minimum requirements. 151.03–19 Environment. 151.01–25 Existing barges. 151.03–21 Filling density. 151.01–30 Effective date. 151.03–23 Flame arrestor. 151.01–35 Right of appeal. 151.03–25 Flame screen.

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151.03–27 Gas free. 151.15–3 Construction. 151.03–29 Great Lakes. 151.15–5 Venting. 151.03–30 Hazardous material. 151.15–6 Venting piping. 151.03–31 Headquarters. 151.15–10 Cargo gauging devices. 151.03–33 Lakes, bays, and sounds. 151.03–35 Limiting draft. Subpart 151.20—Cargo Transfer 151.03–36 Liquid. 151.03–37 Maximum allowable working pres- 151.20–1 Piping—general. sure. 151.20–5 Cargo system valving requirements. 151.03–38 Nondestructive testing. 151.20–10 Cargo system instrumentation. 151.03–39 Ocean. 151.20–15 Cargo hose if carried on the barge. 151.03–41 Officer in Charge, Marine Inspec- 151.20–20 Cargo transfer methods. tion (OCMI). 151.03–43 Pressure. Subpart 151.25—Environmental Control 151.03–45 Rivers. 151.25–1 Cargo tank. 151.03–47 Service. 151.25–2 Cargo handling space. 151.03–49 Sounding tube. 151.03–51 Tank barge. Subpart 151.30—Portable Fire Extinguishers 151.03–53 Tankerman. 151.03–55 [Reserved] 151.30–1 Type.

Subpart 151.04—Inspection and Subpart 151.40—Temperature or Pressure Certification Control Installations 151.04–1 Certificate of inspection. 151.40–1 Definitions. 151.04–2 Inspection required. 151.40–2 Materials. 151.04–3 Initial inspection. 151.40–5 Construction. 151.04–5 Inspection for certification. 151.40–10 Operational requirements. 151.04–7 Nondestructive testing. 151.40–11 Refrigeration systems.

Subpart 151.05—Summary of Minimum Subpart 151.45—Operations Requirements for Specific Cargoes 151.45–1 General. 151.05–1 Explanation of column headings in 151.45–2 Special operating requirements. Table 151.05. 151.45–3 Manning. 151.05–2 Compliance with requirements for 151.45–4 Cargo-handling. tank barges carrying benzene and ben- 151.45–5 Open hopper barges. zene containing cargoes, or butyl acry- 151.45–6 Maximum amount of cargo. late cargoes. 151.45–7 Shipping papers. 151.45–8 Illness, alcohol, drugs. TABLE 151.05 TO SUBPART 151.05—SUMMARY OF 151.45–9 Signals. MINIMUM REQUIREMENTS

Subpart 151.10—Barge Hull Construction Subpart 151.50—Special Requirements Requirements 151.50–1 General. 151.50–5 Cargoes having toxic properties. 151.10–1 Barge hull classifications. 151.50–6 Motor fuel antiknock compounds. 151.10–5 Subdivision and stability. 151.50–10 Alkylene oxides. 151.10–15 Certificate endorsement. 151.50–12 Ethylene oxide. 151.10–20 Hull construction. 151.50–13 Propylene oxide. Subpart 151.12—Equipment and Operating 151.50–20 Inorganic acids. 151.50–21 Sulfuric acid. Requirements for Control of Pollution 151.50–22 Hydrochloric acid. From Category D NLS Cargoes 151.50–23 Phosphoric acid. 151.50–30 Compressed gases. 151.12–5 Equipment for Category D NLS. 151.50–31 Chlorine. 151.12–10 Operation of oceangoing non-self- 151.50–32 Ammonia, anhydrous. propelled ships carrying Category D 151.50–34 Vinyl chloride (vinyl chloride NLS. monomer). Subpart 151.13—Cargo Segregation 151.50–36 Argon or nitrogen. 151.50–40 Additional requirements for car- 151.13–1 General. bon disulfide (carbon bisulfide) and ethyl 151.13–5 Cargo segregation—tanks. ether. 151.50–41 Carbon disulfide (carbon bisulfide). Subpart 151.15—Tanks 151.50–42 Ethyl ether. 151.50–50 Elemental phosphorus in water. 151.15–1 Tank types. 151.50–55 Sulfur (molten).

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151.50–60 Benzene. (2) Not being carried in a portable 151.50–70 Cargoes requiring inhibition or tank regulated under subpart 98.30 or stabilization. 98.33 of this chapter. 151.50–73 Chemical protective clothing. 151.50–74 Ethylidene norbornene. [CGD 81–101, 52 FR 7776, Mar. 12, 1987, as 151.50–75 Ferric chloride solution. amended by CGD 84–043, 55 FR 37413, Sept. 11, 151.50–76 Hydrochloric acid, spent (NTE 1990] 15%). 151.50–77 Fluorosilicic acid (30% or less) § 151.01–2 Incorporation by reference. (hydrofluorosilicic acid). 151.50–79 Methyl acetylene-propadiene mix- (a) Certain standards and specifica- ture. tions are incorporated by reference 151.50–80 Nitric acid (70% or less). into this part with the approval of the 151.50–81 Special operating requirements for Director of the Federal Register in ac- heat sensitive cargoes. cordance with 5 U.S.C. 552(a). To en- 151.50–84 Sulfur dioxide. force any edition other than the ones 151.50–86 Alkyl (C7–C9) nitrates. listed in paragraph (b) of this section, Subpart 151.55—Special Requirements for notice of change must be published in Materials of Construction the FEDERAL REGISTER and the material made available to the public. All 151.55–1 General. approved material is on file at the Na- tional Archives and Records Adminis- Subpart 151.56—Prohibited Materials of tration (NARA), and is available from Construction the sources indicated in paragraph (b) 151.56–1 Prohibited materials. of this section. For information on the availability of this material at NARA, Subpart 151.58—Required Materials of call 202–741–6030, or go to: http:// Construction www.archives.gov/federallregister/ codeloflfederallregulations/ 151.58–1 Required materials. ibrllocations.html. AUTHORITY: 33 U.S.C. 1903; 46 U.S.C. 3703; (b) The standards and specifications Department of Homeland Security Delega- approved for incorporation by ref- tion No. 0170.1. erence in this part and the sections af- EDITORIAL NOTE: Nomenclature changes to fected, are: part 151 appear at 74 FR 49236, Sept. 25, 2009. American Society for Nondestructive Testing SOURCE: CGFR 70–10, 35 FR 3714, Feb. 25, (ASNT) 1970, unless otherwise noted. 4153 Arlingate Road, Caller #28518, Columbus, Subpart 151.01—General OH 43228–0518 ASNT ‘‘Recommended Practice No. § 151.01–1 Applicability. SNT-TC-1A (1988), Personnel Qual- ification and Certification in Non- This part applies to the following: destructive Testing’’ ...... 151.04–7(c)(2) (a) Oceangoing, as defined in 33 CFR 151.05(j), non-self-propelled United American Society of Mechanical Engineers States ships and non-self-propelled for- (ASME) International eign ships operating in United States Three Park Avenue, New York, NY 10016–5990 waters that carry a bulk cargo that is— ASME Boiler and Pressure Vessel Code Section V, Nondestructive (1) Listed in Table 151.05; Examination (1986) ...... 151.04–7(a)(1) (2) Not being carried in a portable tank regulated under subpart 98.30 or American Society for Testing and Materials 98.33 of this chapter; and (ASTM) (3) Not an NLS or is an NLS cargo 100 Barr Harbor Drive, West Conshohocken, that is a Category D listed in § 151.12–5 PA 19428–2959. of this part. ASTM D 4986–98, Standard Test Meth- (b) All non-self-propelled United od for Horizontal Burning Charac- States ships that are not oceangoing teristics of Cellular Polymeric Ma- that carry a bulk cargo that is— terials...... 151.15–3 (1) Listed in Table 151.05, and ASTM E 84–98, Standard Test Method

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for Surface Burning Characteris- Table 151.05 and that is certificated tics of Building Materials—151.15–3 under subchapter I of this chapter [CGD 85–061, 54 FR 50965, Dec. 11, 1989, as must meet the loading information re- amended by USCG–1999–6216, 64 FR 53227, Oct. quirements in § 31.10–32 of this chapter. 1, 1999; USCG–1999–5151, 64 FR 67183, Dec. 1, (d) The provisions of subchapter D of 1999; 69 FR 18803, Apr. 9, 2004] this chapter shall apply to all unmanned tank barges which carry in § 151.01–3 [Reserved] bulk any of the liquids or liquefied § 151.01–5 [Reserved] gases listed in Table 30.25–1 of this chapter. The provisions of this part § 151.01–10 Application of vessel in- shall not apply to such barges unless it spection regulations. is also desired to carry one or more of (a) The regulations in this part are the liquids or liquefied gases listed in requirements which may be in addition Table 151.05. to, supplement, or modify require- (e) Manned barges which carry or in- ments in other subchapters in this tend to carry in bulk the cargoes speci- chapter. When a specific requirement fied in Table 151.05 will be considered in another part or section in another individually by the Commandant and subchapter in this chapter is in conflict may be required to meet the require- with or contrary to requirement or in- ments of this subchapter and of sub- tent expressed in this part, the regula- chapter D (Tank Vessels) or I (Cargo tions in this part shall take prece- and Miscellaneous Vessels) of this dence. chapter as applicable. (b) Every unmanned tank barge which carries or is intended to carry in [CGFR 70–10, 35 FR 3714, Feb. 25, 1970] bulk any liquid or liquefied gas listed EDITORIAL NOTE: For FEDERAL REGISTER ci- in Table 151.05 and has flammability or tations affecting § 151.01–10, see the List of combustibility characteristics as indi- CFR Sections Affected, which appears in the cated by a fire protection requirement Finding Aids section of the printed volume in Table 151.05 shall be inspected and and at www.fdsys.gov. certificated under the provisions in § 151.01–15 Dangerous cargoes not spe- subchapter D (Tank Vessels) of this cifically named. chapter and the regulations in this part. (a) Any liquid or liquefied gas, which (c) Every unmanned tank barge prior meets the definitions referred to in to the carriage in bulk of any liquid or § 151.01–1 and is not named in Table liquefied gas listed in Table 151.05 151.05 or Table 30.25–1 of this chapter which does not have the flammability shall not be transported in bulk in a or combustibility characteristics as in- manned or unmanned tank barge with- dicated by the fire protection require- out the prior specific approval of the ment in Table 151.05 shall be inspected Commandant. and certificated under the applicable (b) Mixtures or blends of two or more provisions of subchapter D or sub- cargoes, one or more of which appears chapter I of this chapter, at the option in Table 151.05, will be treated as of the barge owner, in addition to the though they were new products and regulations in this part. However, un- specific approval of the Commandant less the barge owner notifies the Offi- must be obtained prior to undertaking cer in Charge, Marine Inspection of his their transportation. option to have the barge inspected and [CGFR–70–10, 35 FR 3714, Feb. 25, 1970, as certificated under subchapter I at the amended by CGD 81–101, 52 FR 7777, Mar. 12, time he submits the application for in- 1987; CGD 81–101, 53 FR 28974, Aug. 1, 1988 and spection (Form CG–3752), the un- 54 FR 12629, Mar. 28, 1989; CGD 88–100, 54 FR manned tank barge shall be inspected 40029, Sept. 29, 1989] and certificated under the provisions of subchapter D of this chapter and the § 151.01–20 Use of minimum require- regulations in this part. ments. (c–1) Each unmanned tank barge con- (a) The minimum requirements gov- structed on or after September 6, 1977, erning transportation of any liquid or that carries in bulk a cargo listed in liquefied gas listed in Table 151.05 are

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set forth in this part when such sub- § 151.01–30 Effective date. stances are carried in bulk in un- (a) The regulations in this sub- manned tank barges. chapter are effective on and after June (b) Before any liquid or liquefied gas 1, 1970. However, amendments, revi- listed in Table 151.05 may be carried in sions, or additions shall become effec- an unmanned tank barge, the certifi- tive ninety (90) days after the date of cate of inspection issued to such barge publication in the FEDERAL REGISTER shall be appropriately endorsed to show unless the Commandant shall fix a dif- approval to transport such cargo. ferent time. [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as (b) The regulations in this sub- amended by CGD 88–100, 54 FR 40029, Sept. 29, chapter are not retroactive in effect 1989] unless specifically made so at the time the regulations are issued. Changes in § 151.01–25 Existing barges. specification requirements of articles (a) Except as provided in paragraph of equipment, or materials used in con- (c) of this section, barges certified for, struction of tank barges, shall not or used within the previous 2 years apply to such items which have been prior to the effective date of this regu- passed as satisfactory until replace- lation, or barges equivalent to such ment shall become necessary, unless a barges, for the transportation of any specific finding is made that such cargo regulated by this subchapter equipment or materials used is unsafe which do not meet the specific require- or hazardous and has to be removed ments herein, may be continued in from tank barges. service subject to the following conditions: § 151.01–35 Right of appeal. (1) Venting, gauging, and all oper- Any person directly affected by a de- ating requirements shall be met within cision or action taken under this part, a 1–year period subsequent to the effec- by or on behalf of the Coast Guard, tive date. may appeal therefrom in accordance (2) All other requirements shall be with subpart 1.03 of this chapter. met within a 2–year period subsequent to the effective date. [CGD 88–033, 54 FR 50381, Dec. 6, 1989] (b) If an existing barge, which has been designed to carry or has regularly Subpart 151.02—Equivalents been carrying one or more of the cargoes regulated by this subchapter, is § 151.02–1 Conditions under which found to be so arranged, or outfitted equivalents may be used. that conversion to bring it into compli- (a) Where in this part it is provided ance with any or all of the require- that a particular fitting, material, ap- ments of this subchapter is impractical pliance, apparatus, or equipment, or or impossible, the Commandant, upon type thereof, shall be fitted or carried application, may review the plans of in a vessel, or that any particular pro- the barge to determine if it is suitable vision shall be made or arrangement and safe for the cargoes to be trans- including cargo segregation shall be ported. adopted, the Commandant may accept (c) Except for operating and vinyl in substitution therefor any other fit- chloride requirements, barges con- ting, material, apparatus or equip- structed and certificated for the trans- ment, or type thereof, or any other portation of any cargo for which spe- provision or arrangement. However, cific regulations existed, in parts 36, 38, the Commandant shall be satisfied by 39, 40, and 98 of this chapter at the time suitable evidence that the fitting, ma- of their construction or conversion, terial, appliance, apparatus, or equip- may continue and will be certificated ment, or the type thereof, or the provi- to operate without the requirement sion or arrangement shall be at least as that they comply with the provisions effective as that specified in this part. of subchapter O of this chapter. (b) In any case where it is shown to [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as the satisfaction of the Commandant amended by CGD 74–167k, 40 FR 17026, Apr. that the use of any particular equip- 16, 1975] ment, apparatus, or arrangement not

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specifically required by law is unrea- ment from entering another in the sonable or impracticable, the Com- event of the failure of the walls of one mandant may permit the use of alter- to retain their tightness. nate equipment apparatus, or arrangement to such an extent and upon such § 151.03–15 Commandant. conditions as will insure, to his satis- This term means Commandant of the faction, a degree of safety consistent U.S. Coast Guard. with the minimum standards set forth in this part. § 151.03–17 Compatible. § 151.02–5 Design of unmanned barges. Compatible means that a cargo will (a) In order not to inhibit design and not react in an unsafe manner with application, the Commandant may ap- other cargo or materials used in con- prove vessels of novel design, both new struction of the barge. The prime con- and for conversion, after it is shown to siderations are the chemical, physical, his satisfaction that such a vessel is at or thermal properties of the reaction least as safe as any vessel which meets including heat, pressure, toxicity, sta- the standards required by this part. bility, and explosive nature of the reac- (b) [Reserved] tion and its end products.

Subpart 151.03—Definitions § 151.03–19 Environment. This term refers to the atmosphere § 151.03–1 Definitions of terms. within a cargo tank and the spaces ad- Certain terms used in the regulations jacent to the tank or spaces in which in this subchapter are defined in this cargo is handled. subpart. § 151.03–21 Filling density. § 151.03–3 Angle of downflooding. The ratio, expressed as a percentage, The angle of heel of the vessel at of the weight of cargo that may be which any opening in the hull not pro- loaded into a tank compared to the vided with a water tight closure would weight of water that the tank will hold be immersed. at 60 °F. The weight of a gallon of § 151.03–5 Approved. water at 60 °F in air shall be 8.32828 pounds. This term means approved by the Commandant unless otherwise stated. § 151.03–23 Flame arrestor. § 151.03–7 Barge. Any device or assembly of cellular, This term means any non-self-pro- tubular, pressure or other type used for pelled vessel designed to carry cargo. preventing the passage of flames into enclosed spaces. § 151.03–9 Cargo. This term means any liquid, gas or § 151.03–25 Flame screen. solid having one or more of the dan- A fitted single screen of corrosion-re- gerous properties defined in this sub- sistant wire of at least 30 by 30 mesh or chapter. two fitted screens, both of corrosion-resistant wire, of at least 20 by 20 mesh § 151.03–11 Coastwise. spaced not less than one-half inch or This designation refers to all vessels more than 11⁄2 inches apart. normally navigating the waters of any ocean or the Gulf of Mexico 20 nautical § 151.03–27 Gas free. miles or less offshore. Free from dangerous concentrations § 151.03–13 Cofferdam. of flammable or toxic gases. This term means a void or empty § 151.03–29 Great Lakes. space separating two or more compartments for the purpose of isolation or to A designation for all vessels in Great prevent the contents of one compart- Lakes service.

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§ 151.03–30 Hazardous material. § 151.03–38 Nondestructive testing. In this part hazardous material means Nondestructive testing includes ul- a liquid material or substance that is— trasonic examination, liquid penetrant (a) Flammable or combustible; examination, magnetic particle exam- (b) Designated a hazardous substance ination, radiographic examination, under section 311(b) of the Federal eddy current, and acoustic emission. Water Pollution Control Act (33 U.S.C. [CGD 85–061, 54 FR 50965, Dec. 11, 1989] 1321); or (c) Designated a hazardous material § 151.03–39 Ocean. under 49 U.S.C. 5103. A designation for all vessels nor- NOTE: The Environmental Protection mally navigating the waters of any Agency designates hazardous substances in ocean or the Gulf of Mexico more than 40 CFR Table 116.4A. The Coast Guard des- 20 nautical miles offshore. ignates hazardous materials that are transported as bulk liquids by water in § 153.40. § 151.03–41 Officer in Charge, Marine [CGD 81–101, 52 FR 7777, Mar. 12, 1987, as Inspection (OCMI). amended by CGD 95–028, 62 FR 51209, Sept. 30, This term means any person from the 1997] civilian or military branch of the Coast § 151.03–31 Headquarters. Guard designated as such by the Com- mandant and who, under the super- The Office of the Commandant, U.S. intendence and direction of the Coast Coast Guard, Washington, DC 20593– Guard District Commander, is in 0001. charge of an inspection zone for the [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as performance of duties with respect to amended by CGD 88–070, 53 FR 34535, Sept. 7, the enforcement and administration of 1988] Subtitle II of Title 46, U.S. Code, Title 46 and Title 33 U.S. Code, and regula- § 151.03–33 Lakes, bays, and sounds. tions issued under these statutes. A designation for all vessels navi- [CGD 95–028, 62 FR 51209, Sept. 30, 1997] gating the waters of any of the lakes, bays, or sounds other than the waters § 151.03–43 Pressure. of the Great Lakes. Terminology used in this part are: § 151.03–35 Limiting draft. pounds per square inch gauge (p.s.i.g.) or pounds per square inch absolute Maximum allowable draft to which a (p.s.i.a.). 14.7 p.s.i.a. is equal to 0 barge may be loaded. Limiting draft is p.s.i.g. P.s.i.g. is normally used in ref- a function of hull type and cargo spe- erence to design or operating require- cific gravity. A barge may be assigned ments. different limiting drafts for different hull types or within one hull type for § 151.03–45 Rivers. different specific gravities. A designation for all vessels whose § 151.03–36 Liquid. navigation is restricted to rivers and/or canals, exclusively. In this part liquid includes liquefied and compressed gases. § 151.03–47 Service. [CGD 81–101, 52 FR 7777, Mar. 12, 1987] The waters upon which a vessel may be operated as endorsed upon the cer- § 151.03–37 Maximum allowable work- tificate of inspection. ing pressure. The maximum allowable working § 151.03–49 Sounding tube. pressure shall be as defined in section This is an unperforated tube fitted to VIII of the ASME Boiler and Pressure an ullage hole, secured so as to be Vessel Code. vapor tight to the underside of the [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as tank top open at the bottom, and ex- amended by CGD 85–061, 54 FR 50965, Dec. 11, tending to within 18 inches or less of 1989] the bottom of the tank.

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§ 151.03–51 Tank barge. § 151.04–2 Inspection required. A non-self-propelled vessel especially (a) Every unmanned tank barge sub- constructed or converted to carry bulk ject to the regulations in this sub- liquid cargo in tanks. chapter shall be inspected every five years. More frequent inspections may § 151.03–53 Tankerman. be required, if necessary, by the Officer The following ratings are established in Charge, Marine Inspection, to see in part 13 of this chapter. The terms for that the hull, equipment and appli- the ratings identify persons holding ances of the vessel comply with the marine inspection laws, and the regula- valid merchant mariner credentials or tions of this subchapter and other sub- merchant mariners’ documents for chapters where applicable. service in the ratings issued under that (b) [Reserved] part: (a) Tankerman-PIC. [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as (b) Tankerman-PIC (Barge). amended by USCG–2007–29018, 72 FR 53967, (c) Restricted Tankerman-PIC. Sept. 21, 2007] (d) Restricted Tankerman-PIC § 151.04–3 Initial inspection. (Barge). (e) Tankerman-Assistant. (a) The initial inspection which may consist of a series of inspections during (f) Tankerman-Engineer. the construction of an unmanned barge [CGD 79–116, 60 FR 17157, Apr. 4, 1995, as shall include a complete inspection of amended by USCG–2006–24371, 74 FR 11266, the structure, auxiliary machinery, Mar. 16, 2009] and equipment. The inspection shall be such as to insure that the arrange- §§ 151.03–55 [Reserved] ment, materials, and scantlings of the hull structure, tanks and pressure ves- Subpart 151.04—Inspection and sels and their appurtenances comply Certification with applicable regulations of this chapter and with the requirements of § 151.04–1 Certificate of inspection. this part. (a) A certificate of inspection is re- (b) [Reserved] quired for every unmanned tank barge § 151.04–5 Inspection for certification. subject to the requirements in this subchapter. A certificate of inspection (a) An inspection for certification is shall be issued to the barge or to its a prerequisite of the reissuance of a owners by the Officer in Charge, Ma- Certificate of Inspection as provided rine Inspection, if the barge is found to for in applicable regulations of this comply with applicable inspection laws chapter. and the regulations in this chapter. (b) Unless otherwise specified in (b) The certificate of inspection shall table 151.05, cargo tanks are internally examined as follows: be endorsed with respect to the waters over which the barge may be operated. (1) Where the cargo tank is of the gravity type and the structural fram- (c) The certificate shall be endorsed ing is on the internal tank surface, the describing the cargoes by name as tank shall be inspected internally at given in Table 151.05 or as specifically the time of inspection for certification. approved by the Commandant. No (2) Where the cargo tank is of the other dangerous cargo as defined in gravity type and the structural fram- Subpart 151.01–1 shall be carried. Cer- ing is on the external tank surface ac- tificates shall specify maximum cargo cessible for examination from voids, weight (short tons), maximum density cofferdams, double bottoms, and other (pounds per gallon) and any operating similar spaces, tanks shall be inspected limitations and a limiting draft. internally at 4–year intervals. [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as (3) If the tank is a pressure-vessel amended by CGD 88–100, 54 FR 40029, Sept. 29, type cargo tank, an internal inspection 1989] of the tank is conducted within—

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(i) Ten years after the last internal the time of each vessel’s inspection for inspection on an unmanned barge car- certification. rying cargo at temperatures of ¥67 °F (g) Excess flow valves shall be in- (¥55 °C) or warmer; or spected at the time of inspection for (ii) Eight years after the last internal certification. The Officer in Charge, inspection if the tank is a pressure Marine Inspection, shall satisfy him- type cargo tank carrying cargo at tem- self that the valve is in working condi- peratures colder than ¥67 °F (¥55 °C). tion by visual inspection, and if this is (4) Internal inspection may be re- impossible, by one of the following quired at more frequent intervals as means: deemed necessary by the Officer in (1) Removing the valve and bench Charge, Marine Inspection. testing ashore; the valve shall close at (c) An external examination of or below its rated closing flow. unlagged tanks and the visible parts of (2) By any other means acceptable to lagged tanks is made at each biennial the Officer in Charge, Marine Inspec- inspection. If the vessel has single skin tion, which will demonstrate that the construction, the underwater portion valve is operable. of the tank need not be examined un- (h) Pressure vaccum relief valves less deemed necessary by the Officer in shall be examined to determine that Charge, Marine Inspection. If an exter- the operating mechanism is free and nal examination of the tank is not pos- capable of activation. sible because of insulation, the owner (i) Safety relief valves shall be tested shall ensure that— by bench testing or other suitable (1) The amount of insulation deemed means. The valves shall relieve and necessary by the marine inspector is reseat within the design tolerances of removed during each cargo tank inter- the set pressure, or it shall be removed nal inspection to allow spot external and reset prior to being returned to examination of the tanks and insula- service. This test shall be conducted at tion; or the time of the inspection for certifi- (2) The thickness of the tanks is cation. gauged by a nondestructive means ac- (j) Cargo hose stored on board the cepted by the marine inspector without vessel which is used in transferring the removal of insulation. cargoes listed in Table 151.05 shall be (d) If required by the Officer in inspected every 2 years. This inspec- Charge, Marine Inspection the owner tion shall consist of a visual examina- shall conduct nondestructive testing of tion and a hydrostatic test of 11⁄2 times each tank designated by the Officer in the maximum pressure to which the Charge, Marine Inspection in accord- hose will be subjected in service. The ance with § 151.04–7. date of the most recent inspection and (e) If the Officer in Charge, Marine the test pressure shall be stenciled or Inspection considers a hydrostatic test otherwise marked on the hose. necessary to determine the condition (k) Cargo piping shall be inspected of the tanks, the owner shall perform and tested at the same time as the the test at a pressure of 11⁄2 times the cargo tanks. tank’s— (l) If the tank is a pressure vessel (1) Maximum allowable pressure, as type cargo tank with an internal in- determined by the safety relief valve spection interval of 10 years, and is 30 setting; or years old or older, determined from the (2) Design pressure, when cargo tanks date it was built, the owner shall con- operate at maximum allowable pres- duct nondestructive testing of each sures reduced below the design pressure tank in accordance with § 151.04–7, dur- in order to satisfy special mechanical ing each internal inspection. stress relief requirements. [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as NOTE: See the ASME Code, Section VIII, amended by CGD 88–100, 54 FR 40029, Sept. 29, Appendix 3 for information on design pres- 1989; CGD 85–061, 54 FR 50965, Dec. 11, 1989] sure. (f) Quick closing valves shall be test- § 151.04–7 Nondestructive testing. ed by operating the emergency shutoff (a) Before nondestructive testing system from each operating point at may be conducted to meet § 151.04–5 (d)

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and (l), the owner shall submit a pro- top of the tank (i.e., exclusive of static posal to the Officer in Charge, Marine head). Inspection that includes— (2) Atmospheric pressure. Cargo carried (1) The test methods and procedures at not more than 10 pounds per square to be used all of which must meet sec- inch gauge, exclusive of static head. tion V of the ASME Boiler and Pres- (c) Cargo identification/temperature. sure Vessel Code (1986); This column identifies the cargo by the (2) Each location on the tank to be temperature of the cargo during tran- tested; and sit. (3) The test method and procedure to (1) Ambient temperature. Cargo which be conducted at each location on the is carried at naturally occurring tem- tank. peratures. (b) If the Officer in Charge, Marine (2) Low temperature. Cargo carried Inspection rejects the proposal, the Of- below ambient temperatures when the ficer in Charge, Marine Inspection in- product temperature is below 0 °F. forms the owner of the reasons why the proposal is rejected. (3) Elevated temperature. Cargo carried (c) If the Officer in Charge, Marine above ambient temperatures. Inspection accepts the proposal, then (d) Hull type. This column refers to the owner shall ensure that— the flotation features of the barge. (1) The proposal is followed; and Terms used are explained and defined (2) Nondestructive testing is per- in Subpart 151.10 of this part. formed by personnel meeting ASNT (e) Cargo segregation/tanks. This col- ‘‘Recommended Practice No. SNT-TC- umn refers to the separation of the 1A (1988), Personnel Qualification and cargo from its surroundings. Terms are Certification in Nondestructive Test- explained in § 151.13–5 and in footnotes ing.’’ to Table 151.05 of this part. (d) Within 30 days after completing (f) Tanks/type. This column refers to the nondestructive test, the owner the design requirements for cargo shall submit a written report of the re- tanks and their placement within the sults to the Officer in Charge, Marine hull of the vessel. Terms are explained Inspection. in § 151.15–1. [CGD 85–061, 54 FR 50966, Dec. 11, 1989] (g) Tanks/venting. This column refers to arrangements for preventing excess Subpart 151.05—Summary of Min- pressure or vacuum within the cargo tank. Terms used are explained and de- imum Requirements for Spe- fined in § 151.15–5. cific Cargoes (h) Tanks/gauging devices. This col- § 151.05–1 Explanation of column head- umn refers to arrangements provided ings in Table 151.05. for determining the amount of cargo present in cargo tanks. Terms used are (a) Cargo identification/name. This col- explained and defined in § 151.15–10. umn identifies cargoes by name. Words in italics are not part of the cargo (i) Cargo transfer/piping. This column name but may be used in addition to refers to the classification of piping in the cargo name. When one entry ref- accordance with Subchapter F of this erences another entry by use of the chapter as discussed in § 151.20–1. word ‘‘see’’ and both names are in (j) Cargo transfer/control. This column roman type, either name may be used refers to the valving requirements for as the cargo name (e.g., ‘‘Diethyl ei- the cargo piping system. These require- ther see Ethyl ether’’). However, the ments are defined in § 151.20–5. referenced entry is preferred. (k) Environmental control/cargo tanks. (b) Cargo identification/pressure. This This column refers to control of the column identifies cargo in terms of composition of the environment within pressure within the tank. Terms used cargo tanks. Definitions and detailed are: requirements are given in § 151.25–1. (1) Pressurized. Cargo carried at a (l) Environmental control/cargo han- pressure in excess of 10 pounds per dling space. This column refers to con- square inch gauge as measured at the trol of the environment in the cargo

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handling spaces. Definitions and de- spections. Applicable requirements are tailed requirements are found in given in § 151.04–5. § 151.25–2. [CGFR 70–10, 35 FR 3714, Feb. 25, 1970; 35 FR (m) Fire protection. This column 6431, Apr. 22, 1970, as amended by CGD 74–275, specifies whether portable fire extin- 40 FR 21958, May 20, 1975; CGD 88–100, 54 FR guishers are required on barges car- 40029, Sept. 29, 19895; CGD 96–041, 61 FR 50731, rying the cargo named. Requirements Sept. 27, 1996; USCG 2000–7079, 65 FR 67183, for cargoes requiring extinguishers are Nov. 8, 2000] given in Subpart 151.30 of this part. § 151.05–2 Compliance with require- (n) Special requirements. This column ments for tank barges carrying ben- refers to requirements in subparts zene and benzene containing car- 151.40, 151.50, 151.55, 151.56, and 151.58 of goes, or butyl acrylate cargoes. this part which apply to specific car- A tank barge certificated to carry goes. The section numbers listed omit benzene and benzene containing car- the preceding part designation, ‘‘151’’. goes or butyl acrylate cargoes must (o) Electrical hazard class—group. This comply with the gauging requirement column lists the electrical hazard class of Table 151.05 of this part by August and group used for the cargo when de- 15, 1998. Until that date, a tank barge termining requirements for electrical certificated to carry benzene and ben- equipment under subchapter J (Elec- zene containing cargoes must meet ei- trical engineering) of this chapter. ther the gauging requirement of Table (p) Temperature control installations. 151.05 or the restricted or closed gaug- This column refers to systems which ing requirements in effect on Sep- are used to control the temperature of tember 29, 1994; and a tank barge cer- the cargo. Definitions and require- tificated to carry butyl acrylate car- ments which are applicable if such sys- goes must meet either the gauging re- tems are used are given in Subpart quirements of Table 151.05 or comply 151.40 of this part. with the open, restricted, or closed (q) Tank inspection period. This col- gauging requirements in effect on Sep- umn refers to the maximum period in tember 29, 1994. years between internal cargo tank in- [CGD 95–900, 60 FR 34050, June 29, 1995]

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70(b). 70(a). 70(a). 151 Part CFR in 46 ments Special require- .55-1(g) .50- .50-73 .50-81 .50- .55-1(g) .50-73 .50-81 .58-1(a) Fire quired protection re- EQUIREMENTS R space Cargo handling INIMUM control M tanks Control Cargo UMMARY OF class Piping 151—S ART device P Gauging OF PV Restr. II G-1 .50-73 F Yes PV Closed NR Vent I G-1 F NR .50-5... Vent Yes PV Closed II G-1 F NR .55-1(e) Vent Yes PV Restr. II G-1 No...... F Yes PV Restr. NR Vent II I-D G-1 .50- F NA Yes NR Vent G PV Open No...... II F G-1 Yes Vent NR I-D NA G SR Restr. II .55-1(h) F P-1 Yes I-C Inert Vent NA G Open .50-73 II N G-1 Yes Vent NR Tanks Cargo transfer Environmental transfer Tanks Cargo 151.05 Pres- sure. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Ind. Integral Integral Integral Integral Integral Integral Integral 2i 2i 2i 2i 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii UBPART S tank Cargo gation segre- TO Hull type 151.05 ABLE T

1 Atmos. Amb. I 1 i i Cargo identification a. b. c. d. e. f. g. h. i. j. k. l. m. n. o. p. q. p. o. n. m. l. k. j. i. h. g. f. e. d. c. a. b. Cargo name Pressure Temp. Type Vent hydrin. Acetaldehyde ...... Press. Amb. Acetic acid ...... II 1NA Atmos. Amb. Acetic anhydride .... III Atmos. Amb. Acetone cyano- 1 i III 1 i Acetonitrile ...... Atmos. Amb. Acrylic acid ...... III Atmos. 1 i Amb. Acrylonitrile III ...... Atmos. Amb. 1 i i Adiponitrile ...... II Atmos. Amb. 1 i i II 1 i i

VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00101 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 151, Subpt. 151.05, Table 151.05 46 CFR Ch. I (10–1–11 Edition) 8 years spect. Tank in- period— ternal in- 1(b)(1) Temp. install. control I-B NA G I-C NA G I-D NA G I-D .40- NA G NA G and trical Elec- class group hazard 1(a), (b), (c). 151 Part CFR in 46 ments Special require- .50-32 .50-32 .58-1(e) .50-86 .50-73 .56- Fire quired protection re- space Cargo handling control tanks Control Cargo class Piping Restr. II P-2 NR Vent F No .50-30 No F Vent NR P-2 Restr. II device Gauging PV Restr. II-L G-2 F .50-30 No NR Vent PV Closed I G-1 PV Closed F NR .50-5... Vent Yes I G-1 F NR .50-5... Vent Yes I-D NA G p.s.i. Open .58-1(e) II N G-1 NA Yes NA Vent NR G Open .55-1(b) II N G-1 NA Yes NA Vent NR G Open .50-73 II N G-1 Yes Vent NR Open .50-81 II N G-1 Yes Vent NR Open II .50-73 N G-1 No Vent NR SR250 Tanks Cargo transfer Environmental transfer Tanks Cargo Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Pres- sure. Grav- ity. Integral Ind. Integral Integral Integral Integral Integral Ind. Integral 2i 2i 2i 2i 2i 2i 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii tank Cargo gation segre- Hull type

1 Press. Amb. II 1NA Atmos. Elev. III 1 i i Atmos. Amb. III 1 i Atmos. Amb. III 1 i Atmos. Amb. III Atmos. Amb. 1 i III 1 i Atmos. Low II 1NA ). greater Cargo identification a. b. c. d. e. f. g. h. i. j. k. l. m. n. o. p. q. p. o. n. m. l. k. j. i. h. g. f. e. d. c. a. b. Cargo name Pressure Temp. Type Vent ic acid ( than 4% trates. solution. amine. drous. drous. solution (70% or less). Alkylbenzenesulfon- Alkyl(C7–C9) ni- Allyl alcohol ...... Atmos. Amb. Allyl chloride ...... Atmos. I Amb. Aluminum sulfate 1 i i I Aminoethylethanol- 1 i i Ammonia, anhy- Ammonia, anhy- Ammonium bisulfite

VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00102 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 151, Subpt. 151.05, Table 151.05 I-B NA G I-D NA G I-D NA G I-D NA G NA .40-1(a) G 1(a), (b), (c), (f), (g). 1(b), (d), (f), (g),. 70(a). .56- .50-73 .50-30 .50-36 .50-73 PV Restr. II G-1 F .56- No NR Vent PV Closed II G-1 F NR .50-60 Vent Yes PV Closed II G-1 F NR .50-60 Vent Yes I-D NA PV Closed G II G-1 F NR .50-60 Vent PV Closed Yes II I-D G-1 NA F NR .50-60 Vent Yes G I-D NA G PV Closed I G-1 F NR .50-5... Vent Yes SR Restr. II-L P-1 F .40-1(a) No NR Vent SR Restr. II P-2 .50- F Yes NR Vent Open No...... II N G-1 Yes Vent NR I-D NA G Grav- ity. Grav- ity. Grav- ity. Grav- ity. Pres- sure. Grav- ity. Grav- ity. Grav- ity. Pres- sure. Integral Integral Integral Integral Ind. Integral Integral Integral Ind. 2i 2i 2i 2i 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii II 1 i i Elev. Atmos. Amb. III 1 i Atmos. Amb. III 1 i Atmos. Amb. III 1 i Atmos. Amb. Atmos. Amb. III 1 i ..... Press. Low III 1NA liquefied ). ). ). ). 3 having 10% having 10% having 10% ide (28% or less NH (Coal tar fraction). carbon mixtures (containing Acetylenes) ( Benzene or more carbon mixtures ( Benzene or more Xylene mixtures ( Benzene or more Ammonium hydrox- Aniline ...... Atmos. Amb. Anthracene oil I 1 i i Argon, Benzene ...... Atmos. Amb. Benzene hydro- III 1 i Benzene hydro- Benzene, Toluene, Butadiene ...... Press. Amb. II 1NA

VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00103 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 151, Subpt. 151.05, Table 151.05 46 CFR Ch. I (10–1–11 Edition) years spect. Tank in- period— ternal in- Temp. install. control I-B NA G I-D NA G I-D NA G NA G and trical Elec- class group hazard 70(a). 81(a), (b). 70(a). 81(a), (b). 70(a). 1(b), (d), (f), (g). 151 Part CFR in 46 ments Special require- .50- .50- .50-73 .50- .50-73 .56- Fire quired protection re- space Cargo handling control tanks Control Cargo class Piping device Gauging PV Restr. II G-1 .50- F Yes NR Vent PV Closed II G-1 F NR .55-1(c) Vent Yes I-D NA PV Open G .55-1(h) II F G-1 Yes I-C NA NR Vent G PV Closed I G-1 F NR .50-5... Vent Yes PV Restr. II G-1 .50- F Yes NR Vent SR Restr. II P-1 .50-30 F Yes NR Vent Open No...... II N G-1 Yes Vent NR I-D NA G Tanks Cargo transfer Environmental transfer Tanks Cargo Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Pres- sure. Grav- ity. Integral Ind. Integral Integral Integral Ind. Integral 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii tank Cargo gation segre- Hull type

1 Press. Amb. II 1NA Atmos. Amb. III 1 i Atmos. Amb. II 1 i i Atmos. Amb. III 1 i ) Atmos. Amb. II 1 i i light ). Cargo identification a. b. c. d. e. f. g. h. i. j. k. l. m. n. o. p. q. p. o. n. m. l. k. j. i. h. g. f. e. d. c. a. b. Cargo name Pressure Temp. Type Vent containing ene mixtures ( Acetylenes isomers). mers). isomers). Butadiene, Butyl- Butyl acrylate (all Butylamine (all iso- Butyl methacrylate Atmos. Amb. Butyraldehyde (all III 1 i Camphor oil ( Carbolic oil ...... Atmos. Amb. I 1 i i

VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00104 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 151, Subpt. 151.05, Table 151.05 G 1(b)(1) I-A NA G I-B NA G NA G NA G NA 3 NA G .55-1(j) .55-1(j) .50-31 .50-73 .50-41 .50-21 .50-73 Indirect I P-2 NR Vent F No .50-30 No F Vent NR P-2 Indirect I PV Open II No...... N G-1 No Vent NR PV Restr. NA II NA G-2 .50-73N G Yes NR Vent NA NA G PV Closed I G-1 PV Closed F NR .50-5... Vent Yes I G-1 I-D F NR .50-5... Vent Yes NA G PV Restr. II .50-40 F G-1 Yes Inert Vent PV Open No...... II N G-1 Yes Vent NR I-D NA G PV Open II .50-20 N G-1 No Vent NR PV Restr. II G-1 .50-73F Yes NR Vent I-D NA G SR Restr. I-L P-1 F .50-30No NR Vent NA .40- p.s.i. Open II G-1 NR .50-73 NR No Open II G-1 NR .50-73 NR No Open II No...... F G-1 No NR Vent NA NA G SR300 Pres- sure. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Pres- sure. Grav- ity. Grav- ity. Grav- ity. Ind. Integral Integral Integral Integral Integral Integral Integral Ind. Ind. Integral Integral Integral 2i 2i 2i 2i 2i 2i 2i 2i 2i 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii III 1 i III 1 i Elev. Elev. Press. Low III 1NA Atmos. Amb. III Atmos. Amb. 1 i III 1Atmos. Amb. i i Atmos. Amb. Atmos. Amb. I Atmos. Amb. 1 i i I 1 i i Atmos. Amb. III 1 i liq- ). . crude uefied chloride. oil (untreated). lution. tion. ( Chloronitrobenze- ne. solvent. Carbon dioxide, Carbon disulfide .... Atmos. Amb. Carbon tetra- II Cashew nut shell 1NA Caustic potash so- Caustic soda solu- Chlorine ...... Press. Amb. Chlorobenzene ...... I Atmos. Amb. 1NA Chloroform ...... III Atmos. Amb. 1 i Chlorohydrins III 1 i o- Chlorosulfonic acid Atmos. Amb. Coal tar naphtha III 1 i i

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1 Atmos. Amb. III Atmos. Elev. 1 i III 1 i i Atmos. Amb. III 1 i Atmos. Amb. III 1 i i Cres- Cargo identification see Cresols (all Cargo name Pressure Temp. Type Vent solvent. ten). mers). than 5% Phenol, see isomers). more Phenol, see Phenol. caustic. dium salt solution, ylate spent caustic. Coal tar naphtha Coal tar pitch (mol- Creosote ...... Atmos. Amb. Cresols (all iso- III 1 i Cresols with less Cresols with 5% or Cresylate spent Cresylic acid, so- Crotonaldehyde ..... Atmos. Amb. Cyclohexanone ...... II Atmos. Amb. 1 i i III 1 i

VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00106 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 151, Subpt. 151.05, Table 151.05 I-D NA G I-D NA G I-D NA G NA G NA G 1(a), (b), (c), (g). 70(a). 81(a), (b). 1(a), (b). 1(a), (b), (c), (g). .56-1(b) .50- .55-1(c) PV Restr. II G-1 .55-1(f) F Yes NR Vent I-C NA G PV Restr. II G-1 .56-1(b) F Yes PV Restr. I-D NR Vent NA II G-1 .56- F G Yes NR Vent PV Restr. II G-1 .56- F Yes NR Vent PV Restr. II G-1 No...... F Yes NR Vent I-D NA PV Restr. G II G-1 F No...... No NR Vent I-D NA G SR Restr. II P-1 NR NR No...... No NA NA G Open .50-60 II F G-1 Yes NR Vent Open .50- II N G-1 Yes Vent NR Open II .56- N G-1 No Vent NR Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Pres- sure. Grav- ity. Grav- ity. Grav- ity. Integral Integral Integral Integral Ind. Integral Integral Integral Integral Integral 2i 2i 2i 2i 2i 2i 2i 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii Press. Amb. III 1NA Atmos. Amb. III 1 i Atmos. Amb. III 1 i i Atmos. Amb. III 1 i Atmos. Amb. III 1 i Atmos. Amb. II 1 i i -Dichloroethyl ′ Cyclohexanol mixture. Styrene, Ben- zene mixture. (all isomers). methane. ether. Dichlorophenoxy acetic acid, diethanolamine salt solution. Cyclohexanone, Cyclohexylamine ... Atmos. Amb. III Cyclopentadiene, 1 i i iso-Decyl acrylate .. Atmos. Amb. III Dichlorobenzene 1 i Dichlorodifluoro- Amb. III 1,1-Dichloroethane Atmos. 1 i i 2,2 Dichloromethane ... Atmos. Amb. 2,4- III 1 i

VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00107 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 151, Subpt. 151.05, Table 151.05 46 CFR Ch. I (10–1–11 Edition) years spect. Tank in- period— ternal in- Temp. install. control NA G NA G NA G and trical Elec- class group hazard 1(a), (b), (c), (g). 1(a), (b), (c), (g). 151 Part CFR in 46 ments Special require- .58-1(e) Fire quired protection re- space Cargo handling control tanks Control Cargo class Piping device Gauging PV Restr. II G-1 No...... F Yes PV Restr. NR Vent II I-D G-1 No...... F NA Yes PV Restr. NR Vent G II I-D G-1 No...... F NA Yes PV Restr. NR Vent G II I-D G-1 No...... F NA Yes PV Closed NR Vent G I-D II NA G-1 F G NR No...... Vent Yes I-D NA G PV Restr. II G-1 .50-73 F Yes Dry Vent PV Restr. II G-1 F .56- No NR Vent Open II .56- N G-1 No Vent NR Open .55-1(c) II N G-1 Yes NA NA Vent NR G Tanks Cargo transfer Environmental transfer Tanks Cargo Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Integral Integral Integral Integral Integral Integral Integral Integral Integral 2i 2i 2i 2i 2i 2i 2ii 2ii 2ii 2ii 2ii 2ii 2ii tank Cargo gation segre- III 1 i Hull type Elev.

1 Atmos. Amb. III 1 i Atmos. Amb. II 1 i i Atmos. Amb. Atmos. Amb. III Atmos. Amb. 1 i III Atmos. Amb. 1 i III Atmos. Amb. 1 i II Atmos. Amb. 1 i i II 1 i i Cargo identification Cargo name Pressure Temp. Type Vent Dichlorophenoxy- acetic acid, dimethylamine salt solution. Dichlorophenoxy- acetic acid, triisopropanolamine salt solution. Dichloropropane. Dichloropropane. Dichloropropane. Dichloropropene. Dichloropropane mixtures. Dichloropropionic acid. 2,4- 2,4- 1,1- 1,2- 1,3- 1,3- Dichloropropene, 2,2- Diethanolamine ...... Atmos. Amb. III 1 i

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00109 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 151, Subpt. 151.05, Table 151.05 46 CFR Ch. I (10–1–11 Edition) years spect. Tank in- period— ternal in- Temp. install. control I-D NA G and trical Elec- class group hazard 70(a). 81(a), (b). 151 Part CFR in 46 ments Special require- .50- Fire quired protection re- space Cargo handling control tanks Control Cargo class Piping device Gauging PV Restr. II G-1 .50- F Yes NR Vent PV Restr. II G-1 .55-1(c) F Yes NR I-C Vent NA G PV Closed II G-1 PV Restr. F NR .55-1(b) II Vent Yes G-1 .55-1(b) F I-D Yes I-C NR Vent NA NA G G PV Restr. II G-1 .55-1(b) F Yes I-C NR Vent NA G PV Closed I G-1 F NR .50-5... Vent Yes I-C NA G SR Restr. II P-2 No...... F Yes NR Vent I-D NA 8 Open .56-1(b) II N G-1 NA Yes NA Vent NR Open G .50-73 II N G-1 Yes Vent NR I-D NA 2 Open .55-1(c) II N G-1 Yes I-D NA Vent NR G Tanks Cargo transfer Environmental transfer Tanks Cargo Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Pres- sure. Grav- ity. Integral Integral Integral Integral Integral Ind. Integral Integral Integral Integral 2i 2i 2i 2i 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii tank Cargo gation segre- Hull type

1 Atmos. Amb. III 1 i Atmos. Amb. II 1 i i Atmos. Amb. III 1 i i Cargo identification Cargo name Pressure Temp. Type Vent amine, Tetradecyldimet- hylamine mixture. (72% or less). Ethylcyclohexyla- mine. Di-n-propylamine ... Atmos. Amb. Dodecyl- dimethyl- II 1 i i Dodecyl phenol ...... Atmos. Amb. Epichlorohydrin ...... Atmos. Amb. I Ethanolamine ...... I 1 i i Atmos. Amb. 1 i i Ethyl acrylate ...... III Atmos. 1 i Amb. Ethylamine solution III 1 i N-Ethylbutylamine Atmos. Amb. Ethyl chloride ...... III Press. 1 i i Amb. N- II 1NA

100

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1 Atmos. Amb. II 1 i i Atmos. Amb. III 1 i i Atmos. Amb. III 1 i Atmos. Amb. II 1 i i Atmos. Amb. III Atmos. Amb. 1 i III 1 i i Cargo identification Cargo name Pressure Temp. Type Vent late. norbornene. propylacrolein. tions. (30% or less). tion (37% to 50%). Ethyl ether ...... Atmos. Amb. 2-Ethylhexyl acry- II 1NA Ethylidene Ethyl methacrylate Atmos. Amb. 2-Ethyl-3- III Ferric chloride solu- 1 i i Fluorosilicic acid Formaldehyde solu- Formic acid ...... Atmos. Amb. Furfural ...... III Atmos. Amb. III 1 i i 1 i i

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1 Press. Amb. III NA 1 Atmos. Amb. II 1NA Atmos. Amb. III Atmos. Amb. 1 i III Atmos. Amb. 1 i III 1 i Cargo identification Cargo name Pressure Temp. Type Vent Propadiene mixture. tion (42% or less). ene dimer. diethanolamine. ethylpyridine. Mesityl oxide ...... Atmos. Amb. Methylacetylene, III Methyl acrylate ...... 1 i i Atmos. Amb. Methylamine solu- III 1 i Methyl bromide ...... Press. Amb. Methyl chloride ...... Press. I Amb. Methylcyclopentadi- 1NA II Methyl 1NA 2-Methyl-5-

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1 Atmos. Elev. I Atmos. Elev. 1 i i III 1 i i Atmos. Amb. III 1 i Cargo identification Cargo name Pressure Temp. Type Vent isomers), see Alkyl(C7–C9) nitrates. (elemental). (molten). polyamines. Octyl nitrates (all Oleum ...... Atmos. Amb. Amb. III 1Pentachloroethane Atmos. i i III 1 i i 1,3-Pentadiene ...... Atmos. Amb. Perchloroethylene .. III Atmos. Amb. 1 i Phenol III ...... Atmos. Amb. 1 i Phosphoric acid ..... I Atmos. 1 i i Amb. Phosphorus, white III Phthalic anhydride 1 i i Polyethylene

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1 Atmos. Amb. II 1 i i Atmos. Amb. III 1 i Atmos. Amb. III 1 i Atmos. Amb. III 1 i i Atmos. Amb. II 1 i i Atmos. Amb. III 1 i .. Atmos. Amb. III 1 i see S 15ppm S great- S great- 2 2 2 Cargo identification monomer Cargo name Pressure Temp. Type Vent or less). er than 15ppm but less than 200ppm). er than 200ppm). Caustic soda solution. solution (70% or less). solution, chlorite solution (20% or less). drosulfide solutions (H drosulfide solutions (H drosulfide solutions (H solution (56% or less). Sodium dichromate Sodium hydroxide Sodium hypo- Sodium sulfide, hy- Sodium sulfide, hy- Sodium sulfide, hy- Sodium thiocyanate Styrene

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2 N PV Restr. II G-1 No...... F Yes NR Vent I-D NA G PV Restr. II G-1 F No...... No NR Vent NA NA PV Restr. G II G-1 .50- F Yes NR Vent PV Closed II G-1 F NR .50-73 Vent Yes PV Closed I G-1 PV Closed Dry II G-1 F NR .50-5... Vent Yes SR Closed ...... SR Closed P-2 F NR .50-30 Vent No Open Open II G-1 Open Vent N II .50-20 N Vent N G-1 No Vent NR Open Yes .50-55 II .50-20 N G-1 No Vent NR I-C .40- Open .55-1(c) II N G-1 Yes I-C NA Vent NR G Grav- ity. Grav- ity. Pres- sure. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Grav- ity. Integral Integral Ind. Integral Integral Integral Integral Integral Integral Integral Integral 2i 2i 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii 2ii Atmos. Amb. III 1Atmos. Amb. i i III 1 i Atmos. Amb. I 1 i i Atmos. Amb. III 1 i i Tetrachloroethan- e. mine. diisocyanate. Trichlorobenzene. Sulfur (molten) ...... Atmos. Elev. Sulfur dioxide ...... III Press. Amb. Sulfuric acid ...... 1 i Atmos. I Amb. Sulfuric acid, spent 1NA Atmos. III Amb. 1,1,2,2- 1 i i III Tetraethylenepenta- 1 i i Tetrahydrofuran ..... Atmos. Amb. Toluenediamine ..... III Atmos. Elev. 1 i II 1 i i Toluene o-Toluidine ...... Atmos. Amb. 1,2,4- II 1 i i

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1 Atmos. Amb. III 1 i Atmos. Amb. III 1 i i Atmos. Amb. II 1 i i Atmos. Amb. III Atmos. Amb. 1 i III 1 i Atmos. Amb. Atmos. Amb. III 1 i ). 3 Cargo identification Cargo name Pressure Temp. Type Vent ethane. Trichloropropane. e. (10% or less), Caustic soda solution. phate solution. nitrate solution (containing more than 2% NH isomers). 1,1,2-Trichloro- Trichloroethylene ... Atmos. Amb. 1,2,3- III 1 i Triethanolamine ..... Atmos. Amb. Triethylamine ...... III Atmos. Amb. 1 i Triethylenetetramin- II 1 i i Triphenylborane Trisodium phos- Urea, Ammonium Valeraldehyde (all

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Subpart 151.10—Barge Hull subdivision and damage stability, as Construction Requirements specified in subpart E of part 172 of this chapter; and § 151.10–1 Barge hull classifications. (ii) Hull structural requirements, in- (a) Each barge constructed or con- cluding an assumed grounding condi- verted in conformance with this sub- tion. part shall be assigned a hull type num- (4) Type III barge hull. Barge hulls ber. classed as Type III are those designed (1) Effective dates for certain re- to carry products of sufficient hazard quirements: to require a moderate degree of con- (i) Barges constructed or converted trol. These barges are required to meet: between July 1, 1964, and June 1, 1970, (i) Standards of intact stability as in accordance with the construction re- specified in subpart E of part 172 of this quirements of §§ 32.63 and 98.03 of this chapter; and chapter are considered to comply with (ii) Hull structural requirements. the basic provisions of this subpart and [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as will retain the hull type classification amended by CGD 79–023, 48 FR 51008, Nov. 4, for the service for which they were 1983; CGD 88–100, 54 FR 40040, Sept. 29, 1989] originally approved. Changes in product endorsement will not be considered § 151.10–5 Subdivision and stability. a change in service, except when a Each barge must meet the applicable change to a product of higher specific requirements in subchapter S of this gravity necessitates a reevaluation of chapter. the intact and damage stability re- [CGD 70–023, 48 FR 51009, Nov. 4, 1983] quirements in subpart E of part 172 of this chapter. § 151.10–15 Certificate endorsement. (2) [Reserved] (b) For this purpose the barge hull (a)–(b) [Reserved] types shall be defined as follows: (c) Certificate endorsement. The fol- (1) Type I barge hull. Barge hulls lowing information shall be submitted, classed as Type I are those designed to and upon approval of calculations shall carry products which require the max- form part of the endorsement on the imum preventive measures to preclude Certificate of Inspection: the uncontrolled release of the cargo. (1) Limiting draft for each hull type These barges are required to meet: service for which approval is requested. (i) Standards of intact stability and a (2) Maximum density (lb./gal.) and modified two compartment standard of maximum cargo weight (tons) for each subdivision and damage stability, as tank for which approval is requested. specified in subpart E of part 172 of this Their weights will normally reflect chapter; and uniform loading except that for trim (ii) Hull structural requirements, in- purposes the individual tank cargo cluding an assumed grounding condi- weight may exceed the uniform loading tion. tank cargo weight, corresponding to (2) Type I-S (special) barge hulls. Type the barge fresh water deadweight at I-S (special) barge hulls are those con- the limiting draft, by 5 percent. Where structed or converted for the carriage a greater degree of nonuniform loading of chlorine in bulk prior to July 1, 1964, is desired, longitudinal strength cal- and modified to higher stability stand- culations shall be submitted. ards prior to July 1, 1968, but not meet- [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as ing the requirements for full Type I amended by CGD 79–023, 48 FR 51009, Nov. 4, classification. 1983] (3) Type II barge hull. Barge hulls classed as Type II are those designed to § 151.10–20 Hull construction. carry products which require signifi- (a) Construction features. (1) Each cant preventive measures to preclude barge hull shall be constructed with a the uncontrolled release of the cargo. suitable bow form (length, shape, and These barges are required to meet: height of headlog) to protect against (i) Standards of intact stability and a diving at the maximum speed at which modified one compartment standard of the barge is designed to be towed. In

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any integrated tow, only the lead barge imum ultimate tensile strength of the need comply with this requirement. material or 70 percent of the yield (2) All ‘‘open hopper’’ type barges strength when specified, whichever is shall be provided with coamings around greater. the hopper space and a 36–inch min- (ii) Independent tanks supported by imum height plowshare breakwater on three or more saddles contribute to the the forward rake. The plowshare break- strength and stiffness of the hull. In water may be omitted, if it is dem- such case, the hull stress shall not ex- onstrated to the satisfaction of the ceed the percentage stress values pre- Commandant that sufficient protection scribed in § 151.10–20(b)(2)(i), multiplied is achieved without it. Coamings shall by the quantity have a minimum height of 36 inches (1.5¥SWT/UTS), forward and may be graduated to a minimum height of 24 inches at where SWT is the stress calculated without midlength and 18 inches thereafter. All including the effect of the tanks, and UTS is the minimum ultimate tensile strength hopper barges constructed with a of the material. The value SWT, however, weathertight rain shield over the hop- shall in no case be more than 75 percent of per space are exempt from these re- UTS. quirements, except that they shall be (iii) Integral tanks may be consid- provided with an 18–inch minimum coa- ered as contributing to the strength ming all around the hopper. and stiffness of the barge hull. The hull (3) All ‘‘open hopper’’ type barges stresses for integral tank barges shall modified for the carriage of chlorine in not exceed the percentage stress values bulk shall be provided with 36–inch prescribed in paragraph (b)(2)(i), of this minimum height coamings around the section. hopper. (3) Types I and II barges in ocean (4) All barges in ocean or coastwise service: service shall be provided with a struc- (i) Independent tank barges with tural deck and hatches in accordance tanks supported by three or more sad- with the applicable provisions of sub- dles shall be subjected to a 0.6L0.6 tro- chapter E of this chapter and the choidal wave hogsag analysis to deter- scantling requirements of the Amer- mine the maximum hull and tank ican Bureau of Shipping. bending moments and tank saddle reac- (b) Hull structural requirements. (1) All tions. Types I, II, and III barges shall comply (ii) All independent tank barges, re- with the basic structural requirements gardless of the number of saddle sup- of the American Bureau of Shipping for ports shall be subject to a still water barges of the ordinary types and the bending analysis to determine the hull applicable supplementary requirements bending moment. For those barges of this section. with independent tanks supported by (2) Types I and II barges in inland three or more saddles, this analysis service: A grounding condition shall be shall consider tank-hull interaction so assumed where the forward rake bulk- as to determine tank bending moments head rests upon a pinnacle at the water and saddle reactions. surface. The maximum hull and tank (iii) The still water tank bending mo- bending moment and tank saddle reac- ments and saddle reactions shall be su- tions (if applicable) shall be deter- perimposed upon those obtained by si- mined. The hull bending stress shall multaneous application of the fol- not exceed the applicable limits of lowing dynamic loadings: paragraphs (b)(2) (i), (ii), or (iii) of this (a) Rolling 30° each side (120° full section. The maximum tank bending cycle) in 10 seconds. moment and saddle reaction shall be (b) Pitching 6° half amplitude (24° full used in the tank design calculations re- cycle) in 7 seconds. quired by § 151.15–2(b)(3). (c) Heaving L/80 half amplitude (L/20 (i) Independent tanks supported by full cycle) in 8 seconds. only two saddles do not contribute to (iv) The hull structure and saddle the strength and stiffness of the barge support system shall be analyzed, using hull. In such case, the hull stress shall the maximum hull bending moments not exceed either 50 percent of the min- and saddle reactions obtained from the

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foregoing. Bending stress shall not ex- Methyl methacrylate ceed 60 percent of the yield strength or Morpholine 42 percent of the minimum tensile 1- or 2-Nitropropane strength of the material, whichever is Phosphoric acid less. Critical buckling strength shall be Polyethylene polyamines at least 75 percent greater than cal- Polymethylene polyphenyl isocyanate Propionic acid culated buckling stresses. The max- iso-Propyl ether imum tank bending moments and sad- Pyridine dle reactions shall be used in the tank Tetraethylenepentamine design calculations required by § 151.15– Tetrahydrofuran 3(b)(8). Triethanolamine Triethylenetetramine Subpart 151.12—Equipment and [CGD 81–101, 52 FR 7777, Mar. 12, 1989, as Operating Requirements for amended by CGD 88–100, 54 FR 40040, Sept. 29, Control of Pollution From Cat- 1989; CGD 92–100, 59 FR 17028, Apr. 11, 1994; egory D NLS Cargoes CGD 94–900, 59 FR 45139, Aug. 31, 1994; CGD 94–902, 60 FR 34043, June 29, 1995; USCG 2000 –7079, 65 FR 67196, Nov. 8, 2000] SOURCE: CGD 81–101, 52 FR 7777, Mar. 12, 1987, unless otherwise noted. § 151.12–10 Operation of oceangoing non-self-propelled ships Carrying § 151.12–5 Equipment for Category D Category D NLS. NLS. (a) An oceangoing non-self-propelled The Coast Guard endorses the Certifi- ship may not carry in a cargo tank a cate of Inspection and for ships making Category D NLS cargo listed under foreign voyages issues the endorsed § 151.12–5 unless the ship has on board a NLS Certificate required by § 151.12–10 Certificate of Inspection and for ships for an oceangoing non-self-propelled making foreign voyages an NLS Cer- ship to carry as bulk cargo the fol- tificate endorsed under that section to lowing Category D NLSs if the ship allow the cargo tank to carry the NLS meets the requirements of this part cargo. and the requirements applying to ships (b) The person in charge of an ocean- that carry Category D NLS cargoes in going non-self-propelled ship that car- §§ 153.470, 153.486, and 153.490 of this ries a Category D NLS listed under chapter: § 151.12–5 shall ensure that the ship is Acetic acid operated as prescribed for the oper- Acrylic acid ation of oceangoing ships carrying Cat- Adiponitrile egory D NLSs in §§ 153.901, 153.909, Aminoethylethanolamine 153.1100, 153.1102, 153.1104, 153.1106, Ammonium bisulfite solution 153.1124, 153.1126, 153.1128, 153.1130 and Butyl methacrylate Caustic soda solution 153.1132 of this chapter. Coal tar pitch [CGD 81–101, 52 FR 7777, Mar. 12, 1987, as Cyclohexanone amended by CGD 81–101, 53 FR 28974, Aug. 1, Cyclohexanone, Cychexanol mixture 1988 and 54 FR 12629, Mar. 28, 1989] Dichloromethane 2,2-Dichloropropionic acid Diethylenetriamine Subpart 151.13—Cargo N,N-Dimethylacetamide Segregation Dimethylethanolamine Dimethylformamide § 151.13–1 General. 1,4-Dioxane Ethanolamine This subpart prescribes the require- N-Ethylcyclohexylamine ments for cargo segregation for cargo Ethylene cyanohydrin tanks. These requirements are based on Ethylene glycol monoalkyl ethers considerations of cargo reactivity, sta- Ethyl methacrylate bility, and contamination of the sur- Formic acid roundings and other cargoes. Glutaraldehyde solution Glyoxylic acid solution (50% or less) [CGD 88–100. 54 FR 40029, Sept. 29, 1989, as Hydrochloric acid amended by CGD 96–041, 61 FR 50731, Sept. 27, Mesityl oxide 1996]

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§ 151.13–5 Cargo segregation—tanks. (b) Independent. A cargo containment (a) The configurations listed in this envelope which is not a contiguous paragraph refer to the separation of part of the hull structure. An inde- the cargo from its surroundings and pendent tank is built and installed so list the various degrees of segregation as to eliminate, wherever possible (or, required. Paragraphs and (2) of this in any event, to minimize) its stressing section explain the symbols used in as a result of stressing or motion of the lines 1 and 2, in order, under the tank adjacent hull structure. In general, segregation column of Table 151.05. therefore, motion of parts of the tank (1) Segregation of cargo from sur- relative to the adjacent hull structure rounding waters (Line 1 of Table is possible. An independent tank is not 151.05). essential to the structural completeness of its carrying vessel’s hull. i=Skin of vessel (single skin) only re- (c) Gravity. Tanks having a design quired. Cargo tank wall can be vessel’s hull. pressure (as described in Part 54 of this ii=Double skin required. Cargo tank chapter) not greater than 10 pounds per wall cannot be vessel’s hull. square inch gauge and of prismatic NA=Nonapplicable for this case. Inde- shape or other geometry where stress pendent tanks already have such seg- analysis is neither readily nor com- regation built in through design. pletely determinate. (Integral tanks are of the gravity type.) (2) Segregation of cargo space from (d) Pressure. Independent tanks whose machinery spaces and other spaces design pressure (as described in Part 54 which have or could have a source of of this chapter) is above 10 pounds per ignition (Line 2 of Table 151.05). square inch gauge and fabricated in ac- i=Single bulkhead only required. Tank cordance with part 54, of this chapter. wall can be sole separating medium. Independent gravity tanks which are of ii=Double bulkhead, required. normal pressure vessel configuration Cofferdam, empty tank, pumproom, (i.e., bodies of revolution, in which the tank with Grade E Liquid (if compat- stresses are readily determinate) shall ible with cargo) is satisfactory. be classed as pressure vessel type tanks (b) [Reserved] even though their maximum allowable (c) If a cofferdam is required for seg- working pressure is less than 10 pounds regation purposes and a secondary bar- per square inch gauge. Pressure vessel rier is required for low temperature tanks shall be of Classes I, I-L, II, II-L, protection by § 151.15–3(d)(4), the void or III, as defined in subchapter F of space between the primary and sec- this chapter. ondary barriers shall not be acceptable in lieu of the required cofferdam. § 151.15–3 Construction. [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as This section lists the requirements amended by CGD 75–59, 45 FR 70273, Oct. 23, for construction of the types of cargo 19805; CGD 96–041, 61 FR 50731, Sept. 27, 1996] tanks defined in § 151.15–1. (a) Gravity type tanks. Gravity type Subpart 151.15—Tanks cargo tanks vented at a pressure of 4 pounds per square inch gauge or less § 151.15–1 Tank types. shall be constructed and tested as re- This section lists the definitions of quired by standards established by the the various tank types required for American Bureau of Shipping or other cargo containment by Table 151.05. recognized classification society. Grav- (a) Integral. A cargo containment en- ity type tanks vented at a pressure ex- velope which forms a part of the ves- ceeding 4 but not exceeding 10 pounds sel’s hull in which it is built, and may per square inch gauge will be given spe- be stressed in the same manner and by cial consideration by the Commandant. the same loads which stress the contig- (b) Pressure vessel type tanks. Pressure uous hull structure. An integral tank is vessel type tanks shall be designed and essential to the structural complete- tested in accordance with the require- ness of its vessel’s hull. ments of Part 54 of this chapter.

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(1) Uninsulated cargo tanks, where where: the cargo is transported, at or near am- tz=Service temperature. bient temperatures, shall be designed tw=Boiling temperature of gas at normal for a pressure not less than the vapor working pressure of container but not higher than +32 °F. pressure of the cargo at 115 °F. The de- tB=Boiling temperature of gas at atmos- sign shall also be based on the min- pheric pressure. imum internal pressure (maximum vacuum), plus the maximum external Under normal circumstances, only static head to which the tank may be temperatures due to refrigerated serv- subjected. ice will be considered in determining (2) When cargo tanks, in which the the service temperature. Refrigerated cargo is transported at or near ambient service for purposes of this paragraph temperature, are insulated with an in- is defined as service where the tem- sulation material of a thickness to pro- perature is controlled in the process vide a thermal conductance of not rather than being caused by atmos- more than 0.075 B.t.u. per square foot pheric conditions. per degree Fahrenheit differential in (6) Heat transmission studies, where temperature per hour, the tanks shall required, shall assume the minimum be designed for a pressure of not less ambient temperatures of 0 °F still air than the vapor pressure of the cargo at and 32 °F still water, and maximum 105 °F. The insulation shall also meet ambient temperatures of 115 °F still air the requirements of paragraph (f) of and 90 °F still water. this section. (7) Where applicable, the design of (3) Cargo tanks in which the tem- the cargo tanks shall investigate the perature is maintained below the nor- thermal stresses induced in the tanks mal atmospheric temperature by re- at the service temperature. frigeration or other acceptable means (8) Calculations showing the stress shall be designed for a pressure of not level in the tanks under dynamic load- less than 110 percent of the vapor pres- ing conditions for ocean service barges sure corresponding to the temperature (see § 151.10–20(b)(4)) and grounding con- of the liquid at which the system is ditions for inland service barges (see maintained, or the pressure cor- § 151.10–20–(b)(2)) shall be submitted to responding to the greatest dynamic the Commandant for approval. These and static loads expected to be encoun- calculations shall take into account tered in service. For mechanically the local stresses due to the inter- stressed relieved cargo tanks, addi- action between the barge hull and the tional factors relating design pressure tanks. and maximum allowable pressure shall (c) High density cargo. Cargoes with a be as specified by the Commandant. specific gravity greater than that for The material of the tank shall meet which the scantlings of the tank are the material requirements specified in designed may be carried provided that: part 54 of this chapter for the service (1) The maximum cargo weight (tons) temperature, and this temperature in a specific tank does not exceed the shall be permanently marked on the maximum cargo weight (tons) endorsed tank as prescribed in § 54.10–20 of this on the certificate of inspection. chapter. (2) The scantlings of the tank are suf- (4) The maximum allowable tempera- ficient to prevent rupture under a full ture of the cargo is defined as the boil- head of the higher density cargo. ing temperature of the liquid at a pres- Scantlings meeting ordinary bulkhead sure equal to the setting of the relief requirements for the full head will sat- valve. isfy this requirement. (5) The service temperature is the (d) Arrangements—(1) Collision protec- minimum temperature of a product at tion. (i) Tanks containing cargoes which it may be contained, loaded and/ which are required to be carried in or transported. However, the service Type I hulls by Table 151.05 shall be lo- temperature shall in no case be taken cated a minimum of 4 feet inboard higher than given by the following for- from the side shell and box end of the mula. vessel. Tanks containing cargoes which tz=tw¥0.25(tw¥tB) are required to be carried in Type II 117

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hulls by Table 151.05 shall be located a structural components of the hull minimum of 3 feet inboard from the which may be exposed to low tempera- side shell and box end of the vessel. tures shall meet the material require- (ii) All independent cargo tanks in- ments (i.e., chemistry and physical stalled on Type I or Type II barge hulls properties) specified in part 54 of this shall be protected with suitable colli- chapter for the service temperature in- sion chocks or collision straps. A longi- volved. Heat transmission studies and tudinal collision load of one and one tests may be required to demonstrate half times the combined weight of the that the structural material tempera- tank and the cargo shall be assumed. tures in the hull are acceptable. All other independent cargo tanks (ii) The design shall take into consid- shall be provided with suitable colli- eration the thermal stresses induced in sion chocks or collision straps assum- the cargo tank at the service tempera- ing a longitudinal collision load equal ture during loading. to the combined weight of the tank and (iii) Where necessary, devices for the cargo. The design bearing stress spray loading or other methods of shall not exceed 2 times the yield precooling or cooling during loading strength or 1.5 times the minimum ul- shall be included in the design. timate strength, whichever is less. (iv) Pressure-vessel type tanks shall (iii) Tanks containing cargoes, which be radiographed in accordance with the are required to be carried in Type I or requirements of part 54 of this chapter. Type II hulls by Table 151.05, shall be For gravity type tanks, all weld inter- located a minimum of 25 feet from the sections or crossings in joints of pri- head log at the bow. Box barges and mary tank shells shall be radiographed trail barges need not comply with this for a distance of 10 thicknesses from requirement. the intersection. All other welding in (2) Inspection clearances. The distance the primary tank and in the secondary between tanks or between a tank and barrier, shall be spot radiographed in the vessel’s structure shall be such as accordance with the requirements spec- to provide adequate access for inspection and maintenance of all tank sur- ified in part 54 of this chapter for Class faces and hull structure; but shall not II-L pressure vessels. normally be less than 15 inches except (v) For nonpressure vessel type con- in way of web frames or similar major tainment systems, access shall be ar- structural members where the min- ranged to permit inspection one side imum clearance shall be equal to the each of the primary tank and sec- flange or faceplate width. ondary barrier, under normal shipyard (3) Access openings. Each tank shall conditions. Containment systems be provided with at least a 15″×18″ di- which, because of their peculiar design, ameter manhole, fitted with a cover lo- cannot be visually inspected to this de- cated above the maximum liquid level gree, may be specially considered pro- as close as possible to the top of the vided an equivalent degree of safety is tank. Where access trunks are fitted to attained. tanks, the diameter of the trunks shall (e) Installation of cargo tanks. (1) be at least 30 inches. Cargo tanks shall be supported on (4) Low temperature protection. (i) foundations of steel or other suitable When low temperature cargoes are to material and securely anchored in be carried in gravity type tanks at a place to prevent the tanks from shift- temperature lower than that for which ing when subjected to external forces. the hull steel is adequate, a secondary Each tank shall be supported so as to barrier designed to contain leaked prevent the concentration of excessive cargo temporarily shall be provided. loads on the supporting portions of the The design of the cargo containment shell or head. system shall be such that under normal (2) Foundations, and stays where re- service conditions, or upon failure of quired, shall be designed for support the primary tank, the hull structure and constraint of the weight of the full shall not be cooled down to a tempera- tank, and the dynamic loads imposed ture which is unsafe for the materials thereon. Thermal movement shall also involved. The secondary barrier and be considered.

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(3) Foundations and stays shall be (2) Insulation in a location exposed to suitable for the temperatures they will possible high temperature or source of experience at design conditions. ignition shall be one of the following: (4) Cargo tanks may be installed ‘‘on (i) Incombustible, complying with deck,’’ ‘‘under deck,’’ or with the tanks the requirements of Subpart 164.009 of protruding through the deck. All tanks Part 164 of this chapter; or shall be installed with the manhole (ii) Fire retardant, having a flame openings located in the open above the spread rating of 50 or less as deter- weather deck. Provided an equivalent mined by ASTM Specification E 84 (in- degree of safety is attained, the Com- corporated by reference, see § 151.01–2) mandant may approve cargo tanks in- (Tunnel Test); or, stalled with manhole openings located (iii) Nonburning or ‘‘self-extin- below the weather deck. Where a por- guishing’’ as determined by ASTM tion of the tank extends above the Specification D 4986, ‘‘Horizontal Burn- weather deck, provision shall be made ing Characteristics of Cellular Poly- to maintain the weathertightness of meric Materials’’ (incorporated by ref- the deck, except that the erence, see § 151.01–2) and covered by a weathertightness of the upper deck steel jacket having a minimum thick- need not be maintained on: ness of 18 gauge (0.0428 inches) (U.S. (i) Vessels operating on restricted Standard Gauge) or an equivalent routes which are sufficiently protected; means of protection acceptable to the or, Commandant. (ii) Open hopper type barges of ac- (3) Insulation in a location protected ceptable design. against high temperature or source of (5) No welding shall be performed on ignition need satisfy no requirement tanks which require and have been for combustibility. stress relieved unless authorized by the (4) Insulation shall be impervious to Commandant. water vapor, or have a vapor-proof (f) Materials. (1) Materials used in the coating of a fire-retardant material ac- construction of cargo tanks shall be ceptable to the Commandant. Unless suitable for the intended application the vapor barrier is inherently weather and shall be in accordance with the ap- resistant, tanks exposed to the weather plicable requirements of part 54 of this shall be fitted with a removable sheet chapter. For cargoes carried at low metal jacket of not less than 18 gauge temperatures, the tank supports and over the vapor-proof coating and foundations, and portions of the hull flashed around all openings so as to be which may be exposed to low tempera- weathertight. Insulation which is not ture, shall also meet the applicable re- exposed to the weather when installed quirements of that part. on tanks carrying cargoes above ambi- (2) When required, cargo tanks shall ent temperatures need not be imper- be lined with rubber or other material vious to water vapor nor be covered acceptable to the Commandant. The in- with a vapor-proof coating. terior surfaces of the cargo tanks shall (5) Insulation shall be adequately be made smooth, welds chipped or protected in areas of possible mechan- ground smooth, and the surfaces thor- ical damage. oughly cleaned before the lining is ap- (h) Fire exposure protection. Tanks plied. The lining material shall be re- which are provided with fire exposure sistive to attack by the cargo, not less protection of one of the following cat- elastic than the metal of the tank egories may be allowed a reduction in proper, and nonporous when tested the size of relief valves. after application. It shall be of sub- (1) Approved incombustible insula- stantially uniform thickness. The lin- tion meeting the requirements of sub- ing shall be directly bonded to the tank part 164.007 of part 164 of this chapter plating, or attached by other satisfac- which is secured to the tank with steel tory means acceptable to the Com- bands. mandant. (2) Located in a hold or protected by (g) Insulation. (1) Insulation, when a self-supporting steel jacket or cover provided, shall be compatible with the (such as a hopper cover) of at least 10 cargo and the tank materials. gauge (0.1345) for insulation.

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(i) Tanks not protected against fire working pressure. The maximum safety exposure as described in this paragraph relief valve setting shall not exceed the shall not be permitted a reduction in maximum allowable working pressure size of relief valves. of the tank. For cargoes carried at ambient temperatures, the minimum safe- [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88–100, 54 FR 40040, Sept. 29, ty relief valve setting shall correspond 1989; USCG–1999–5151, 64 FR 67183, Dec. 1, 1999; to the saturated vapor pressure of the USCG–2000–7790, 65 FR 58463, Sept. 29, 2000] cargo at 105 °F if carried in an insulated tank, or 115 °F if carried in an § 151.15–5 Venting. uninsulated tank. For cargoes carried This section contains definitions and below ambient temperature, the safety requirements for the various methods relief valve setting shall be selected to of venting specified in Table 151.05. In provide a suitable margin between nor- addition to the requirement that all mal operating pressure of the tank and vents must penetrate into tanks at the the opening pressure of the valve but in top of the vapor space, the following no case shall it exceed the maximum methods of venting and the applicable allowable working pressure of the restrictions are listed: tank. The safety relief valves shall be (a) Open venting. A venting system of a type approved under subparts which offers no restriction (except pipe 162.001 or 162.018 of subchapter Q of this losses and flame screen, where used) to chapter. The required capacity of the the movement of liquid or vapor to or safety relief valves shall be in accord- from the cargo tank (via the vent) ance with the requirements of part 54 under normal operating conditions. of this chapter. The total cross-sectional area of the (d) Rupture disks. (1) When required vents shall not be less than the total by the nature of the cargo, rupture cross-sectional area of the filling pipe disks may be installed in lieu of or in or pipes. Ullage openings may be addition to other pressure limiting de- counted as part of the required cross- vices in accordance with the require- sectional area: Provided, That each ments of § 54.15–13 of this chapter. cargo tank has at least one permanent (2) When a pressure-vacuum relief vent. The minimum size of a cargo valve or safety relief valve normally tank vent shall be not less than 21⁄2 protected by a rupture disk or breaking inches. The outlet end of the vent shall pin device is exposed to the cargo due terminate in a gooseneck bend and to breakage of the disk, the valve shall shall be located at a reasonable height be reinspected before being returned to above the weather deck, clear of all ob- service. structions. No shut-off valve or frangible disk shall be fitted in the vent § 151.15–6 Venting piping. lines except that a float check valve (a) The back pressure in the relief may be installed so as to exclude the valve discharge lines shall be taken entry of water into the tank (i.e., to into account when determining the prevent downflooding). An open vent- flow capacity of the relief valve to be ing system may be fitted with a flame used. The back pressure in the dis- screen. charge line shall be limited to 10 per- (b) Pressure-vacuum venting. A nor- cent of the valve operating pressure or mally closed venting system fitted a compensating-type valve shall be with a device to automatically limit used. Suitable provision shall be made the pressure or vacuum in the tank to for draining condensate which may ac- design limits. Pressure-vacuum relief cumulate in the vent piping. valves shall comply with the require- (b) [Reserved] ments of subpart 162.017 of this chapter. The required capacity of the venting § 151.15–10 Cargo gauging devices. system shall be in accordance with This section contains definitions and part 54 of this chapter. requirements for types of gauging de- (c) Safety relief venting. A closed vent- vices specified in Table 151.05. ing system fitted with a device to auto- (a) Open gauging. A gauging method matically limit the pressure in the which uses an opening in the cargo tank to below its maximum allowable tank and which may expose the gauge

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user to the cargo and its vapors. Exam- at 105 °F, if carried in an insulated ples of this type are gauge hatch, tank. ullage hole. (2) When utilizing a sounding tube, (b) Restricted. A gauging device which the cargo tank vent system shall be de- penetrates the cargo tank and which, signed to prevent the discharge of in operation, causes or permits the re- cargo through the sounding tube due to lease to the atmosphere of small quan- pressure build up in the cargo tank tities of cargo vapor or liquid. The vapor space. (See § 151.03–43) When car- amount of cargo released is controlled goes carried at atmospheric pressure by the small diameter of the tank pen- are required to have a restricted gaug- etration opening and by a locally oper- ing device, open gauges may be pro- ated valve or similar closure device in vided in addition to restricted gauges that opening. When not in use, this for this type of cargo. However, open type gauging device is closed to main- gauges may not be used while cargo tain the complete integrity of cargo transfer operations are actually being containment. Examples of this type are performed. (g) Fixed tube gauges are not accept- rotary tube, fixed tube, slip tube, able as primary means of gauging. sounding tube. (See §§ 151.03–49 and They may be used as a check on the 151.15–10(g).) calibration of other gauging devices. (c) Closed. A gauging device which (h) For pressure-vessel type tanks, penetrates the cargo tank, but which is each automatic float, continuous read- part of a closed system maintaining ing tape or similar type gauge not the complete integrity of cargo con- mounted directly on the tank or dome tainment. This device is designed and shall be fitted with a shutoff device lo- installed so as not to release cargo liq- cated as close to the tank as prac- uid or vapor in any amount to the at- ticable. When an automatic float gaug- mosphere. Examples of this type are ing device, which gauges the entire automatic float, continuous tape (mag- height of the tank, is used, a fixed tube netic coupled), sight glass (protected), gauge set in the range of 85 percent to electronic probe, magnetic, differential 90 percent of the water capacity of the pressure cell. tank shall be provided in addition as a (d) Isolated or indirect. A gauging means of checking the accuracy of the method or device which is isolated automatic float gauge, or other alter- from the tank (no penetration of the nate means acceptable to the Com- tank shell) and which may employ an mandant may be used. indirect measurement to obtain the de- (i) Gauge glasses of the columnar sired quantity. Examples of this type type are prohibited. are weighing of cargo, sonic depth (j) Flat sight glasses may be used in gauge (without penetration of tank the design of automatic float contin- shell), pipe flow meter. uous reading tape gauges. However (e) All gauging devices and related such glasses shall be made of high fixtures which form a part of the cargo strength material, suitable for the op- containment barrier shall be of suit- erating temperatures, of not less than able material and shall be designed for one-half inch in thickness and ade- the pressure and temperature of the quately protected by a metal cover. cargo in accordance with the require- [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as ments of Subchapter F of this chapter. amended by USCG–2005–22329, 70 FR 57183, (f) Use of restricted gauging devices. (1) Sept. 30, 2005] When required in Table 151.05, cargoes carried under pressure shall have re- Subpart 151.20—Cargo Transfer stricted gauging devices designed so that the maximum bleed valve opening § 151.20–1 Piping—general. is not larger than 0.055;inch; diameter, (a) Cargo piping systems shall be ar- unless provided with an excess flow ranged and fabricated in accordance valve. Sounding tubes are prohibited with this section and Subchapter F. for use with cargoes having a vapor The class of piping system required for pressure in excess of 14.7 p.s.i.a. at 115 a specific cargo shall be as listed in °F, if carried in an uninsulated tank, or Table 151.05 as a minimum; however, a

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higher class may be required when the joints, etc., to protect the piping and actual service temperature or pressure tank from excessive stress due to ther- so dictates. See Table 56.04–2 of this mal movement and/or movements of chapter. the tank and hull structure. Expansion (b) Piping system components shall joints shall be held to a minimum and be suitable for use with the cargoes for where used shall be subject to indi- which the barge is certificated, and vidual approval by the Commandant. shall be of materials listed in Sub- (f) Low temperature piping shall be chapter F of this chapter, or such other isolated from the hull structure. Where material as the Commandant may spe- necessary, arrangements to provide for cifically approve. All piping materials the protection of the hull structure shall be tested in accordance with the from leaks in low temperature systems requirements of Subchapter F of this in way of pumps, flanges, etc., shall be chapter. The valve seat material, pack- provided. ing, gaskets, and all other material (g) Connections to tanks shall be pro- which comes into contact with the tected against mechanical damage and cargo shall be resistant to the chemical tampering. Underdeck cargo piping action of the cargoes for which the shall not be installed between the out- barge is certificated. board side of cargo containment spaces (c) Cargo piping systems, when sub- and the skin of the barge, unless provi- ject to corrosive attack of the cargo, sion is made to maintain the minimum and when serving cargo tanks which inspection and collision protection are required by this subchapter to be clearances (where required) between lined or coated, shall be constructed of, the piping and the skin. Cargo piping lined or coated with corrosion-resist- which is external to tanks, and is in- ant material. Vent systems shall be stalled below the weather deck shall be similarly constructed, lined, or coated joined by welding, except for flanged up to and including the vent control connections to shutoff valves and ex- device. (d) All piping systems components pansion joints. shall have a pressure rating at oper- (h) Piping shall enter independent ating temperature (according to the cargo tanks above the weatherdeck, ei- applicable American National Stand- ther through or as close to the tank ards Institute, Inc., pressure/tempera- dome as possible. ture relations) not less than the max- (i) Horizontal runs of cargo piping on imum pressure to which the system integral tank barges may be run above may be subjected. Piping which is not or below the weatherdeck. When run protected by a relief valve, or which below the weatherdeck, the following can be isolated from its relief valve, are applicable: shall be designed for the greatest of: (1) Horizontal runs located entirely (1) The cargo vapor pressure at 115 within integral cargo tanks shall be °F. fitted with a stop valve, located inside (2) The maximum allowable working the tank that is being serviced and op- pressure of the cargo tank. erable from the weatherdeck. There (3) The pressure of the associated shall be cargo compatibility in the pump or compressor relief valve. event of a piping failure. (4) The total discharge head of the as- (2) Horizontal runs of cargo piping in- sociated pump or compressor where a stalled in pipe tunnels may penetrate discharge relief valve is not used. gravity type tanks below the The escape from cargo piping system weatherdeck: Provided, That each pene- relief valves shall be run to venting tration is fitted with a stop valve oper- system or to a suitable recovery sys- able from the weatherdeck. If the tun- tem. Provisions shall be made for pres- nel is directly accessible from the sure relief of all piping, valves, fit- weatherdeck without penetrating the tings, etc., in which excessive pressure cargo tank, the stop valve shall be lo- build-up may occur because of an in- cated on the tunnel side. If the tunnel crease in product temperature. is not accessible from the weatherdeck, (e) Provisions shall be made by the the valve shall be located on the tank use of offsets, loops, bends, expansion side of the penetration.

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(3) The tunnel shall comply with all the shore facility and attached to the tank requirements for construction, lo- barge end of the loading hose. When a cation, ventilation, and electrical haz- cargo hose connection is not in use, it ard. There shall be cargo compatibility may be secured with a blind flange. in the event of a piping failure. (3) If individual deepwell pumps are (4) The tunnel shall have no other used to discharge the contents of each openings except to the weatherdeck or cargo tank, and the pumps are provided a cargo pumproom. with a remote shutdown device, a stop valve at the tank is not required on the § 151.20–5 Cargo system valving re- tank discharge line. quirements. (b) Gravity–2 (G–2). (1) One manually For the purpose of adequately con- operated stop valve shall be installed trolling the cargo, both under normal on each tank penetration, located as operating and casualty conditions, close as possible to the tank. every cargo piping system shall be pro- (2) One remote operated, quick clos- vided with one of the following sets of ing shut-off valve shall be installed at control valves and meet the require- each cargo hose connection. ments listed below. Cargo tanks, (3) A remote shutdown device shall be whether gravity or pressure vessel installed for all cargo handling ma- type, for cargoes having a saturated chinery. vapor pressure of 10 pounds per square (c) Pressure–1 (P–1). (1) One manually inch gauge or less at 115 °F (105 °F if operated stop valve and one excess flow the tank is insulated) shall be provided valve shall be installed on each tank with a valving system designated as penetration, located as close as pos- Gravity–1. Cargo tanks, whether grav- sible to the tank. ity or pressure vessel type, for cargoes (2) One manually operated stop valve which are carried below ambient tem- shall be installed at each cargo hose perature and whose vapor pressure is connection, when in use. maintained at 10 pounds per square (d) Pressure–2 (P–2). (1) One manually inch gauge or below shall be provided operated stop valve and one excess flow with a valving system designated as valve shall be installed at each tank Gravity–2. Cargo tanks for cargoes penetration, located as close as pos- which have vapor pressures above 10 sible to the tank. p.s.i.g. at 115 °F (105 °F if tank is insu- (2) One remote operated quick clos- lated) shall be provided with a valving ing shutoff valve shall be installed at system designated as Pressure–1. Cargo each cargo hose connection when in tanks for cargoes which have vapor use. pressures above 10 pounds per square (3) No tank penetration shall be less inch gauge at 115 °F (105 °F if tank is than 1 inch diameter. insulated) and which require greater (e) Cargo tank penetrations which protection due to their hazardous char- are connections for gauging or meas- acteristics shall be provided with a uring devices need not be equipped valving system designated as Pressure– with excess flow or remote operated 2. The requirements of paragraphs (a) quick closing valves provided that the through (d) of this section for stop opening is constructed so that the out- valves or excess flow valves to be fitted ward flow of tank contents shall not at tank penetrations are not applicable exceed that passed by a No. 54 drill size to nozzles at which pressure vacuum or (0.055–inch diameter). safety relief valves are fitted. (f) The control system for any re- (a) Gravity–1 (G–1). (1) One manually quired quick closing shutoff valves operated stop valve shall be installed shall be such that the valves may be on each tank filling and discharge line, operated from at least two remote lo- located near the tank penetration. cations on the vessel; if means of fire (2) One stop valve or blind flange protection is required by Table 151.05, shall be installed at each cargo hose the control system shall also be pro- connection. When a cargo hose connec- vided with fusible elements designed to tion is in use, it shall be provided with melt between 208 °F and 220 °F, which a stop valve; which may be part of the will cause the quick closing shutoff vessel’s equipment or may be part of valves to close in case of fire. Quick

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closing shutoff valves shall be of the compressor, whichever determines the fail-closed (closed on loss of power) maximum pressure to which the hose type and be capable of local manual op- may be subjected in service. eration. Quick closing shutoff valves (c) Each new type of cargo hose, com- shall operate from full open to full plete with end fittings, shall be proto- closed under all service conditions in type tested to a pressure not less than not more than 10 seconds, without five times its specified maximum work- causing excessive pressure surges. ing pressure. The hose temperature (g) Excess flow valves, where re- during this prototype test shall dupli- quired, shall close automatically at the cate the intended extreme service tem- rated closing flow of vapor or liquid as perature. Thereafter, each new length tested and specified by the manufac- of cargo hose produced shall be turer. The piping, including fittings, hydrostatically tested at ambient tem- valves, and appurtenances protected by perature to a pressure not less than an excess flow valve, shall have a twice its maximum working pressure greater capacity than the rated closing nor more than two-fifths its bursting flow of the excess flow valve. Excess pressure. The hose shall be marked flow valves may be designed with a by- with its maximum working pressure, pass not to exceed 0.040–inch diameter and if used in other than ambient tem- opening to allow equalization of pres- perature service, its maximum or min- sure, after an operating shutdown. imum temperature. (h) Suitable means shall be provided to relieve the pressure and remove liq- § 151.20–20 Cargo transfer methods. uid contents from cargo lines and hoses to the cargo tank or other safe location (a) Cargo transfer may be accom- prior to effecting disconnections. plished by means of gravity, pumping, vapor or gas pressurization, or fluid § 151.20–10 Cargo system instrumenta- displacement unless otherwise provided tion. in Subpart 151.50 of this part. (a) Each tank operated at other than (b) Vapor or gas pressurization may ambient temperature shall be provided be used only in transferring cargo from with at least one remote reading tem- pressure vessel type cargo tanks. The perature sensor located in the liquid pressurizing vapor or gas lines shall be phase of the cargo. The temperature provided with safety relief device in gauge shall be located at the cargo the lines set to open at a pressure no handling control station or another ap- greater than 90 percent of the set pres- proved location. sure of the cargo tank safety relief (b) Where required, each tank valve. The pressurizing line shall be equipped with safety relief valves shall fitted with a stop valve at the tank, be fitted with a pressure gauge which and a check valve to prevent the acci- shall be located at the cargo handling dental release of cargo through the control station or at another approved pressure line. location. (c) Fluid displacement is permitted with either gravity or pressure vessel § 151.20–15 Cargo hose if carried on type cargo tanks. The displacing fluid the barge. shall enter the tank under low relative (a) Liquid and vapor line hose used pressure. The fluid entry line shall be for cargo transfer shall be of suitable fitted with a safety relief valve set to material resistant to the action of the lift at a pressure no higher than 80 per- cargo. Hose shall be suitable for the cent of the cargo tank safety relief temperatures to which it may be sub- valve setting. jected and shall be acceptable to the (d) When cargo vapors are flammable, Commandant. combustible or toxic, cargo filling lines (b) Hose subject to tank pressure, or entering the top of the tank shall lead the discharge pressure of pumps or to a point at or near the bottom. Spray vapor compressors, shall be designed filling lines, discharging near the top for a bursting pressure of not less than of the tank, may be fitted in lieu of, or 5 times the maximum safety relief in addition to, the above cargo filling valve setting of the tank, pump, or lines.

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Subpart 151.25—Environmental sufficient to permit a change of air Control every 3 minutes. (b) Natural ventilation. The natural § 151.25–1 Cargo tank. ventilation system shall be designed to When carrying certain commodities insure sufficient air movement to regulated by this subchapter, one of avoid the accumulation of toxic or the following types of cargo protection flammable vapors and to insure suffi- may be required, within the main cargo cient oxygen to support life. tank, and in some cases, in the space between the primary and secondary Subpart 151.30—Portable Fire barriers. Extinguishers (a) Inerted. All vapor spaces within the cargo tank are filled and main- § 151.30–1 Type. tained with a gas or vapor which will When required by Table 151.05, ap- not support combustion and which will proved portable fire extinguishers shall not react with the cargo. be installed in accordance with Sub- (b) Padded. All vapor spaces within part 34.50 of this chapter. The fire ex- the cargo tanks are filled and main- tinguishing media shall be dry chem- tained with a liquid, gas (other than ical or other suitable agent for all loca- air), or vapor which will not react with tions. the cargo. (c) Ventilated (forced). Vapor space above the liquid surface in the tank is Subpart 151.40—Temperature or continuously swept with air by means Pressure Control Installations of blowers or other mechanical devices requiring power. § 151.40–1 Definitions. (d) Ventilated (natural). Vapor space This section defines the various above the liquid surface in the tank is methods by which the cargo may be continuously swept with atmospheric heated or cooled. air without the use of blowers or other (a) Boiloff. Cargo pressure and tem- mechanical devices requiring power peratures are maintained by permit- (e.g., ‘‘chimney-effect’’ ventilation). ting the cargo to boil naturally and the (e) Dry. All vapor space within the cargo vapor thus generated removed cargo tank is filled and maintained from the tank by venting. with a gas or vapor containing no more (b) External cargo cooling—(1) Cargo than 100 ppm water. vapor compression. A refrigeration sys- [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as tem in which the cargo vapors gen- amended by CGD 88–100, 54 FR 40040, Sept. 29, erated within the tank are withdrawn, 1989] compressed, and the lower energy vapor or its condensate returned to the § 151.25–2 Cargo handling space. tank. Pump rooms, compressor rooms, re- (2) External heat exchange. A refrig- frigeration rooms, heating rooms, in- eration system in which the cargo strument rooms or other closed spaces vapor or liquid is cooled outside the regularly entered by operating per- cargo tanks by being passed through a sonnel, in which work is performed on heat exchanger. Refrigeration is not the cargo or in which the cargo move- accomplished by direct compression of ment is locally controlled, may be re- the cargo. quired to be fitted with one of the fol- (c) Internal heat exchange. A refrig- lowing types of ventilation: eration system in which a cooling fluid (a) Forced ventilation. The forced ven- is passed through heat transfer coils tilation system shall be designed to in- immersed in the cargo tank liquid or sure sufficient air movement through vapor phases. these spaces to avoid the accumulation (d) Tank refrigeration. A refrigeration of toxic or flammable vapors and to in- system in which the cooling fluid is sure sufficient oxygen to support life, passed around the cargo tank exterior and, in any event, the ventilation sys- in order to remove heat from the tank tem shall have a minimum capacity or its surroundings.

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(e) No refrigeration. A system that al- of refrigeration systems shall be suffi- lows the liquefied gas to warm up and cient to maintain the cargo at design increase in pressure. The insulation operating conditions with ambient and tank design pressure shall be ade- temperature of 115 °F still air and 90 °F quate to provide for a suitable margin still water. The number and arrange- for the operating time and tempera- ment of compressors shall be such that tures involved. the required cooling capacity of the (f) Tank heating. (1) A system in system is maintained with one com- which the cargo is heated by means of pressor inoperative. Portions of the steam or other heat transfer fluid run- system other than the compressors ning through coils within or around need not have standby capacity. the tank. The cargo itself does not leave the tank. Subpart 151.45—Operations (2) A recirculating system in which the cargo leaves the tank, is pumped § 151.45–1 General. through a heater and then returned to the tank. (a) Barges certificated as tank barges (Subchapter D of this chapter) or cargo § 151.40–2 Materials. barges (Subchapter I of this chapter) Materials used in the construction of for the carriage of cargoes regulated by temperature or pressure control sys- this subchapter shall meet all applica- tems shall be suitable for the intended ble requirements for operations in the application and meet the requirements appropriate subchapter; in addition, re- of Subchapter F and the Special Re- quirements prescribed in this subpart quirements section of this subchapter. shall apply to either type of certification. § 151.40–5 Construction. (b) [Reserved] Construction of machinery or equipment, such as heat exchangers, con- § 151.45–2 Special operating requirements. densers, piping, etc., associated with temperature or pressure control sys- (a) The requirements of this section tems shall meet the requirements of shall apply to all barges carrying in Subchapter F of this chapter. The elec- bulk any cargoes regulated by this sub- trical portions of these installations chapter; however, the provisions of this shall meet the requirements of Sub- section are not applicable to such chapter J of this chapter. barges when empty and gas-freed. (b) When it is necessary to operate § 151.40–10 Operational requirements. box or square-end barges as lead barges Control systems, required by Table of tows, the person in charge of the 151.05 shall be provided with an audible towing vessel shall control the speed to or visual high cargo temperature or insure protection against diving and high cargo pressure alarm which is dis- swamping of such barges, having due cernible at the towboat. The alarm regard to their design and freeboard, shall operate when either the pressure and to the operating conditions. or the temperature exceeds the oper- (c) No cargo tank hatch, ullage hole, ating limits of the system. The alarm or tank cleaning openings shall be may monitor either pressure or tem- opened or remain open except under perature, but must be independent of the supervision of the person in charge, the control system. except when the tank is gas free. (d) Barges, when tendered to the car- § 151.40–11 Refrigeration systems. rier for transportation, shall have all (a) Boiloff systems. The venting of bilges and void spaces (except those cargo boiloff to atmosphere shall not used for ballasting) substantially free be used as a primary means of tempera- of water. Periodic inspections and nec- ture or pressure control unless specifi- essary pumping shall be carried out to cally authorized by the Commandant. insure maintenance of such water-free (b) Vapor compression, tank refrig- condition in order to minimize the free eration, and secondary refrigeration surface effects, both in longitudinal systems: The required cooling capacity and transverse directions. Except when

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otherwise considered necessary for in- single sign similar to the following ex- spection or pumping, all hatch covers ample: and other hull closure devices for void spaces and hull compartments other Tank No. Cargo than cargo spaces shall be closed and IP ...... /xxxx/ secured at all times. IS ...... /xxxx/ 2P ...... /xxxx/ (e) Cargo signs and cards. (1) Warning 2S ...... /xxxx/ signs shall be displayed on the vessel, port and starboard, facing outboard These signs may be printed, hand- without obstructions, at all times ex- written, permanent or changeable, but cept when the vessel is gas free. The be visible and readable at all times. warning sign shall be rectangular and a These signs should be as readable, as minimum of 3 feet wide and 2 feet high. those specified in paragraph (e)(1) of It shall be of sufficient size to accom- this section. Cargoes regulated by modate the required alerting informa- other subchapters will be included tion, which shall be shown in black whenever carried simultaneously with block style letters and numerals (char- commodities regulated by this sub- acters) at least 3 inches high on a chapter. white background. The minimum spac- (ii) When the dangerous cargo barge ing between adjacent words and lines of is carrying only a single product, the characters shall be 2 inches. The min- Warning Sign required by paragraph imum spacing between adjacent char- (e)(1) of this section can be considered acters shall be one-half inch. All char- as meeting the requirements for the acters shall have a minimum stroke cargo location sign. The name of the width of one-half inch and shall be a commodity shall be added to the Warn- minimum of 2 inches wide, except for ing Sign. the letters ‘‘M’’ and ‘‘W’’, which shall (3) A cargo information card for each be a minimum of 3 inches wide, and ex- cargo regulated by this subchapter cept for the letter ‘‘I’’ and the Numeral shall be carried on the bridge or in the ‘‘1’’, which may be 1⁄2–inch wide. The pilot house of the towing vessel, read- signs shall have a 2–inch minimum ily available for use by the person in white border clear of characters. The charge of the watch. This information signs shall be maintained legible. The card shall also be carried aboard the alerting information shall include the barge, mounted near the Warning Sign following: required by paragraph (e)(1) of this section, in such position as to be easily WARNING read by a man standing on the deck of DANGEROUS CARGO the barge. The minimum card size shall be 7″×91⁄2″. The card shall have legible (This sign may be covered or removed printing on one side only. The card when Subchapter O commodities are not being carried.) shall be laminated in clear plastic or otherwise made weatherproof. The fol- NO VISITORS lowing data shall be listed: (i) Cargo identification and characteris- NO SMOKING tics. Identification of the cargo, as list- (This sign may be removed or covered ed in Table 151.05, its appearance and when the commodity is not flammable or odor. A statement of the hazards incombustible.) volved and instructions for the safe handling of the cargo and, as applica- NO OPEN LIGHTS ble, the need for special cargo environ- (This sign may be removed or covered ments. when the commodity is not flammable or (ii) Emergency procedures. Precautions combustible.) to be observed in the event of spills, (2)(i) Names and locations of all car- leaks, or equipment or machinery goes will be displayed in a readily dis- breakdown and/or uncontrolled release cernible manner on all barges carrying of the cargo into the waterway or at- one or more commodities regulated by mosphere. Precautions to be observed this subchapter. This may be an indi- in the event of exposure of personnel to vidual sign at or on each tank or by a toxic cargoes.

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(iii) Firefighting procedures. Pre- (2) A towing vessel engaged in trans- cautions to be observed in the event of porting such unmanned barges shall a fire occurring on or adjacent to the not leave them unattended. When a barge, and enumeration of firefighting barge is moored, but not gas free, it media suitable for use in case of a shall be under the care of a watchman cargo fire. who may be a member of the com- (f) Surveillance. During the time the plement of the towing vessel, or a ter- cargo tanks contain any amount of liq- minal employee, or other person. This uid or gaseous dangerous cargoes re- person shall be responsible for the se- quiring Type I or Type II barge hulls, curity of the barge and for keeping un- the barge shall be under surveillance, authorized persons off the barge. Such as set forth in this paragraph: person shall be provided with, read, and (1) The licensed operator, person in have in his possession for ready ref- command, and mate of a vessel towing erence the information cards required a tank barge that need not be manned, by paragraph (e) of this section. and each of them, shall be responsible (g) All cargo hatches shall be closed, for monitoring the security and integ- dogged down, or otherwise tightly se- rity of the tank barge and for ensuring cured. adherence to proper safety precautions. [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as These responsibilities include, but are amended by CGD 88–100, 54 FR 40040, Sept. 29, not limited to— 1989; CGD 79–116, 60 FR 17158, Apr. 4, 1995] (i) Ensuring that every tank barge added to the tow has all tank openings § 151.45–3 Manning. properly secured; has its freeing-ports Except as provided for in this sec- and scuppers, if any, unobstructed; tion, barges need not be manned unless meets any loadline or freeboard rein the judgment of the Officer in quirements; and neither leaks cargo Charge, Marine Inspection, such man- into the water, voids, or cofferdams nor ning is necessary for the protection of leaks water into the tanks, voids, or life and property and for safe operation cofferdams; of the vessel. Vessels requiring man- (ii) Ensuring that every tank barge ning for safe operation shall be subject in the tow is properly secured within to additional requirements as deter- the tow; mined by the Commandant. Towing (iii) Ensuring that periodic checks vessels, while towing barges which are are made of every tank barge in the not required to be manned, shall be tow for leakage of cargo into the provided with and have on board the water, voids, or cofferdams and for information card required by § 151.45– leakage of water into the tanks, voids, 2(e)(3). This card shall be in the posses- or cofferdams; sion of the master or person in charge. (iv) Knowing the cargo of every tank barge in the tow, all hazards associated § 151.45–4 Cargo-handling. with the cargo, and what to do on dis- (a) On a United States tank barge covery of a leak; subject to inspection— (v) Ensuring that the crew of the ves- (1) The owner and operator of the sel know the cargo of every tank barge vessel, and his or her agent, and each in the tow, all hazards associated with of them, shall ensure that no transfer the cargo, and what to do on discovery of liquid cargo in bulk or cleaning of a of a leak; cargo tank takes place unless under (vi) Reporting to the Coast Guard the supervision of a qualified person any leaks from a tank barge in the tow designated as the person in charge of into the water, as required by 33 CFR the transfer or the cleaning under Sub- 151.15; and part C of 33 CFR part 155. (vii) Ensuring that the crew of the (2) The person in charge of the trans- vessel and other personnel in the vicin- fer shall ensure that enough qualified ity of the tank barges in the tow follow personnel are on duty to safely transfer the proper safety precautions for tank liquid cargo in bulk or to safely clean vessels, and that no activity takes cargo tanks. place in the vicinity of the barges that (b) Closing of sea and ballast valves. could create a hazard. All sea and ballast valves are to be

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properly aligned and lashed, or sealed (8) The shore terminal or other tank in their correct position prior to begin- vessel concerned has reported itself in ning cargo transfer operations. Under readiness for transfer of cargo. no circumstances shall such valves be (9) All sea valves are properly set and secured by locks. those connected to the cargo piping are (c) Connecting for cargo transfer. (1) closed. Movement of the vessel shall be consid- (10) When transferring flammable or ered when making the cargo connec- combustible cargoes that a determina- tions to insure safe cargo transfer. tion was made as to whether or not Suitable material shall be used in boiler and/or galley fires can be main- joints and in couplings when making tained with reasonable safety. connections to insure that they are (e) Duties of the person in charge dur- tight. Under no circumstances shall ing transfer operations. The person in less than three bolts be used in a bolted charge of the transfer operations shall flanged coupling. control the operations as follows: (1) Supervise the operation of the (2) When cargo connections are sup- cargo system valves. ported by the vessel’s tackle, the per- (2) Start transfer of cargo slowly. son in charge of the transfer operations (3) Observe cargo connections and shall inspect the vessel to insure that hose for leakage. sufficient tackles are used. (4) Observe operating pressure on (3) Pans or buckets shall be placed cargo systems. under cargo hose connections. (5) Comply with loading limitations (4) Cargo transfer operations for any placed on the vessel by the Certificate cargo requiring a PV or safety relief of Inspection, if, any, for the purpose of venting device in Table 151.05 shall be not overloading individual tanks or the performed with cargo hatch covers vessel. closed. (6) Observe the loading rate for the (d) Inspection prior to transfer of cargo. purpose of avoiding overflow of the Prior to the transfer of cargo, the per- tanks. son in charge of the transfer operation (f) Cargo transfer operations shall shall inspect the barge and other cargo not be started or, if started, shall be equipment to assure himself that the discontinued under the following condi- following conditions exist: tions: (1) The Certificate of Inspection is (1) During severe electrical storms. endorsed for the products to be loaded. (2) If a fire occurs on the barge, the Loading restrictions, if any, should be wharf or in the immediate vicinity. noted. (3) If potentially dangerous leakage (2) Warning signs are displayed as re- occurs. quired. (g) No vessel shall come alongside or (3) Cargo information cards for the remain alongside a barge in way of its product are aboard. cargo tanks while it is transferring cargo unless the conditions then pre- (4) No repair work in way of cargo vailing are mutually acceptable to the space is being carried out. persons in charge of cargo handling. (5) Cargo connections and hatch cov- (h) Auxiliary steam, air, fuel, or electric ers conform with the provisions of current. When discharging cargo from paragraph (c) of this section and cargo one or more barges, the towing vessel valves are properly set. may furnish steam, air, fuel, or electric (6) All connections for cargo transfer current for pumps on barges or dock, have been made to the vessel’s fixed but in no case shall the cargo pass pipeline system. through or over the towing vessel. (7) In transferring flammable or com- (i) Termination of transfer operations. bustible cargoes, there are no fires or When transfer operations are com- open flames present on the deck, or in pleted, the valves on cargo connections any compartment which is located on, on the vessel shall be closed. The cargo facing, open or adjacent to the part of connections shall be drained of cargo. the deck on which cargo connections (j) Transfer of other cargo or stores on have been made. a barge. (1) Packaged goods, freight,

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and ship’s stores shall not be loaded or so that the danger from diving or discharged during the loading of flam- swamping will be minimized. Where, mable cargoes except by permission of due to operating conditions, compli- the person in charge of the transfer op- ance with this paragraph is impossible, eration. Explosives shall not be loaded the provisions of paragraph (a)(3) of or carried on any barge containing this section apply. The person in products regulated by this subchapter. charge of the towing vessel shall be re- (2) Where package and general cargo sponsible for compliance with this is carried directly over bulk cargo paragraph. tanks, it shall be properly dunnaged to (2) No such open hopper type barge prevent chafing of metal parts and se- shall be moved from a loading facility curely lashed or stowed. unless all void spaces and bilges are (k) Transportation of other cargo or substantially free of water. Periodic in- stores on barges. Barges may be per- spections and necessary pumping shall mitted to transport deck cargoes di- be carried out to insure the mainte- rectly over bulk cargo spaces when the nance of such water-free conditions, in nature of such deck cargoes and the order to minimize the free surface ef- methods of loading and unloading same fect in both the longitudinal and trans- do not create an undue hazard. Such verse directions. Except when consid- barges shall have their decks properly ered necessary for inspection or pump- dunnaged to prevent chafing between ing, all hatch covers and other hull clo- the steel parts of the vessel and the sure devices for void spaces and hull deck cargo. compartments shall be closed and se- (l) Deck construction must be ade- cured at all times. In the case of un- quate to support the intended load. manned barges, the person in charge of Provisions for carrying deck cargo the towing vessel shall be deemed to be shall be endorsed on the Certificate of Inspection by the Officer in Charge, in charge of the barge, and all require- Marine Inspection. ments to be carried out on the barge (m) Emergencies. In case of emer- shall be carried out by or under the di- gencies, nothing in the regulations in rection of this person. this subchapter shall be construed as (3) When an open hopper type barge is preventing the person in charge of in an exposed position, such that pro- transfer operations from pursuing the tection from swamping provided by ad- most effective action in his judgment joining barges cannot be obtained from for rectifying the conditions causing the location within the tow, it shall be the emergency. the responsibility of the person in charge of the towing vessel to control [CGFR 70–10, 35 FR 3714, Feb. 25, 1970; 35 FR speed so as to insure protection against 6431, Apr. 22, 1970, as amended by CGD 75–59, diving and swamping of the barge, hav- 45 FR 70273, Oct. 23, 1980; CGD 81–059, 54 FR 151, Jan. 4, 1989; CGD 79–116, 60 FR 17158, Apr. ing regard to its design and freeboard, 4, 1995] and other operating conditions. (b) To show that special operating re- § 151.45–5 Open hopper barges. quirements apply to a specific open (a) All open hopper barges not con- hopper type barge, additional placards structed or modified in conformance or signs shall be displayed in at least with the provisions of Subpart 151.10 of four different locations on the barge this part when carrying in bulk any when the cargoes subject to this part cargoes regulated by this subchapter are carried in any form in the cargo shall meet the provisions of this sec- tanks. The placards or signs shall be tion. However, the provisions of this posted on the barge approximately section are not applicable to such amidships on each side and near the barges when empty (not necessarily centerline fore and aft facing outboard. cleaned or gas-freed). Racks, or other suitable means for (1) Except as otherwise provided in mounting such placards or signs, shall this section, no such open hopper type be so arranged as to provide clear visi- barge shall be placed as lead barge in bility and shall be protected from be- any tow. These barges shall be placed coming readily damaged or obscured. in protected positions within the tow The placards or signs shall be at least

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equal in dimensions to the DOT stand- of each cargo in the barge. Such mani- ard tank car ‘‘Dangerous’’ placard (103⁄4 fest or bills of lading may be made out inches square or larger) and shall dis- by the shipper, master of the towing play a circle (10 inches in diameter or vessel, owner, or agent of the owner. larger) with alternating quadrants of However, in the case of unmanned white and red, and so mounted that the barges the master of the towing vessel red quadrants are centered on the shall either have a copy of the shipping vertical axis. The shipper and/or owner papers for each barge in his tow or he of the barge shall be responsible for the shall make an entry in the towing ves- installation of the required placards or sel’s log book giving the name of the signs, including maintenance of them shipper, location where the barge was while such barge is in temporary stor- loaded, and the kind, grade, and quan- age with cargo aboard. The person in tity of cargo by compartment in the charge of the towing vessel shall be re- barge. The barge shall not be delayed sponsible for the continued mainte- in order to secure the exact quantities nance of the placards or signs while of cargo. such barge is in transit. § 151.45–8 Illness, alcohol, drugs. § 151.45–6 Maximum amount of cargo. A person who is under the influence (a) Tanks carrying liquids or lique- of liquor or other stimulants, or is so fied gases at ambient temperatures ill as to render him unfit to perform regulated by this subchapter shall be service shall not be permitted to per- limited in the amount of cargo loaded form any duties on the barge. to that which will avoid the tank being liquid full at 105 °F if insulated, or 115 § 151.45–9 Signals. °F if uninsulated. If specific filling den- While fast to a dock, a vessel during sities are designated in Subpart 151.50 transfer of bulk cargo shall display a of this part, they shall take precedence red flag by day or a red light by night, over that noted above. which signal shall be so placed that it (b) Refrigerated and semirefrigerated will be visible on all sides. When at an- tanks shall be filled so that there is an chor, a vessel during transfer of bulk outage of at least 2 percent of the vol- cargo shall display a red flag by day, ume of the tank at the temperature placed so that it will be visible on all corresponding to the vapor pressure of sides. This flag may be metallic. the cargo at the safety relief valve setting. A reduction in the required out- Subpart 151.50—Special age may be permitted by the Com- Requirements mandant when warranted by special design considerations. Normally, then, EDITORIAL NOTE: Nomenclature changes to the maximum volume to which a tank subpart 151.50 appear at 60 FR 50465, Sept. 29, may be loaded is: 1995, and 61 FR 50732, Sept. 27, 1996. V =0.98d V÷d L r L § 151.50–1 General. where: Special requirements found in this VL=Maximum volume to which tank may be subpart pertain to specific cargoes and loaded. V =Volume of tank. to similar groups of cargoes. These requirements are in addition to and take dr=Density of cargo at the temperature required for a cargo vapor pressure equal to precedence over any other require- the relief valve setting. ments found in these regulations. dL=Density of cargo at the loading temperature and pressure. § 151.50–5 Cargoes having toxic properties. § 151.45–7 Shipping papers. When table 151.05 refers to this sec- Each barge carrying dangerous cargo tion, the following apply: shall have on board a bill of lading, (a) [Reserved] manifest, or shipping document giving (b) Independent tanks shall be de- the name of shipper, location of the signed and tested for a head of at least loading point, and the kind, grade, and 8 feet above the top of the tank using approximate quantity by compartment the specific gravity of the product to

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be carried. In addition, tank design cal- be directed away from areas where it is culations shall demonstrate that the likely that persons might be working tank can withstand, without rupture, a and as remote as practicable from ven- single loading to the highest level to tilation inlets and ignition sources. A which the product may rise, if that ex- common discharge header may be em- ceeds 8 feet. In general, plate less than ployed if desired. The area near the dis- five-sixteenths inch in thickness shall charge fittings shall be clearly marked not be used in the fabrication of inde- as a hazardous area. pendent tanks unless otherwise ap- (g) A means shall be provided for ei- proved. ther the reclamation or safe venting of (c)(1) Cargo tanks transporting liq- vapors during the loading and unload- uids having a Reid vapor pressure ex- ing operations. For this purpose the ceeding 14 pounds per square inch abso- safety relief or pressure vacuum relief lute or vented at a gauge pressure ex- valve shall be provided with a valved ceeding 4 pounds per square inch, or bypass to a vapor return line shore where air or water pressure is used to connection which shall be used when- discharge the cargo, shall be fabricated ever vapor return shore facilities are as arc-welded unfired pressure vessels. available. In the event vapors must be (2) Unfired pressure vessel cargo vented to the atmosphere, a vent riser tanks shall be designed for a pressure shall extend at least 12 feet above the not less than the vapor pressure, in highest level accessible to personnel. pounds per square inch gauge, of the The vent riser may be collapsible for lading at 115 °F, or the maximum air or ease of stowage when not in use. Vapor water pressure used to discharge the return lines or vent risers for tanks cargo, whichever is greater, but in no carrying the same class product may case shall the design pressure of such be connected to a common header sys- tanks be less than 30 pounds per square tem if desired. Tanks carrying cargoes inch gauge. covered by this section shall be vented (d) Piping. (1) The pumps and piping independent of tanks carrying other used for cargo transfer shall be inde- products. pendent of all other piping. (h) The pump room ventilation outlet (2) Where multiple cargoes are car- duct exhausts shall terminate at a dis- ried, and the cargo piping conveying tance of at least 6 feet above the en- cargoes covered under this section are closed space or pump room and at least led through cargo tanks containing 6 feet from any entrance to the interior other products, the piping shall be en- part of the vessel. The discharge end of cased in a tunnel. the exhaust ducts shall be located so as (3) Where cargo lines handling other to preclude the possibility of recircu- products, or bilge and ballast piping lating contaminated air through the are led through tanks containing car- pump room, or other spaces where per- goes covered by this section, the piping sonnel may be present. shall be enclosed in a tunnel. [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as (e) Gravity type cargo tanks shall be amended by CGD 88–100, 54 FR 40040, Sept. 29, fitted with an approved pressure-vacu- 1989] um relief valve of not less than 21⁄2-inch size, which shall be set at a pressure of § 151.50–6 Motor fuel antiknock com- not less than 3 pounds per square inch pounds. gauge, but not in excess of the design When transporting motor fuel anti- pressure of the tank. knock compounds containing tetra- (f) The discharge fittings from each ethyl lead and tetramethyl lead the re- safety relief or pressure vacuum relief quirements listed in this section shall valve shall be directed in such a man- be observed. ner as to not impinge on another tank, (a) Tanks used for these cargoes shall piping or any other equipment which not be used for the transportation of would increase the fire hazard should any other cargo except those commod- burning products be discharged from ities to be used in the manufacture of the safety or pressure vacuum relief tetraethyl lead and tetramethyl lead. valve as a result of a fire or other cas- (b) Pump rooms shall be equipped ualty. In addition, the discharges shall with forced ventilation with complete

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air change every 2 minutes. Air anal- taining not less than 11 percent chro- ysis shall be run for lead content to de- mium. Mercury, silver, aluminum, termine if the atmosphere is satisfac- magnesium, copper, and their alloys tory prior to personnel entering the shall not be used for any valves, pump room. gauges, thermometers, or any similar (c) Entry into cargo tanks used for devices. Gaskets shall be constructed the transportation of these cargoes is of spirally wound stainless steel with not permitted. ‘‘Teflon’’ or other suitable material. (d) No internal tank inspection is re- All packing and gaskets shall be con- quired. If it is desired to internally in- structed of materials which do not spect tanks used for these cargoes, the react spontaneously with or lower the Commandant must be notified in ad- autoignition temperature of the alkyl- vance before such inspection is made. ene oxides. (e) The provisions of § 151.50–5 shall (e) The pressure rating of valves, fit- also be met as a requirement for ship- tings, and accessories shall be not less ping antiknock compounds containing than the maximum pressure for which tetraethyl lead and tetramethyl lead. the cargo tank is designed, or the shut- off head of the cargo pump, whichever § 151.50–10 Alkylene oxides. is greater, but in no case less than 150 (a) For the purpose of this part, al- pounds per square inch. Welded fittings kylene oxides are considered to be manufactured in accordance with ethylene oxide and propylene oxide. A.N.S.I. Standards shall be used wher- (b) Alkylene oxides transported ever possible, and the number of pipe under the provisions of this part shall joints shall be held to a minimum. be acetylene free. Threaded joints in the cargo liquid and (c)(1) No other product may be trans- vapor lines are prohibited. ported in tanks certified for an alkyl- (f) The thermometer shall terminate ene oxide except that the Commandant in the liquid space and shall be at- may approve subsequent transpor- tached to the shell by welding with the tation of other products and return to end of the fitting being provided with a alkylene oxide service if tanks, piping gastight screwed plug or bolted cover. and auxiliary equipment are ade- (g) Automatic float continuous read- quately cleaned to the satisfaction of ing tape gauge, and similar types, shall the Marine Inspector. be fitted with a shutoff valve located as (2) Unless authorized by the Com- close to the tank as practicable, which mandant, no other kind of cargo except shall be designed to close automati- methane, ethane, propane, butane and cally in the event of fracture of the ex- pentane shall be on board a tank vessel ternal gauge piping. An auxiliary gaug- certificated for the carriage of an al- ing device shall always be used in con- kylene oxide at the same time an al- junction with an automatic gauging kylene oxide in either the liquid or device. vapor state is present in any cargo (h) Filling and discharge piping shall tank. Alkylene oxide tanks shall not be extend to within 4 inches of the bottom installed in tanks intended for any of the tank or sump pit if one is pro- other cargo. vided. (d) All valves, flanges, fittings, and (i) Venting. (1) The discharge fittings accessory equipment shall be of a type from each safety relief or pressure vac- suitable for use with the alkylene ox- uum relief valve shall be directed in ides and shall be made of steel or stain- such a manner as to not impinge on an- less steel, or other materials accept- other tank, piping or any other equip- able to the Commandant. Impurities of ment which would increase the fire copper, magnesium and other acety- hazard should burning products be dis- lide-forming metals shall be kept to a charged from the safety or pressure minimum. The chemical composition vacuum relief valve as a result of a fire of all material used shall be submitted or other casualty. In addition, the dis- to the Commandant for approval prior charges shall be directed away from to fabrication. Disks or disk faces, areas where it is likely that persons seats and other wearing parts of valves might be working and as remote as shall be made of stainless steel con- practicable from ventilation inlets and

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ignition sources. A common discharge (4) All ventilation machinery shall be header may be employed if desired. The of nonsparking construction and shall area near the discharge fittings shall not provide a source of vapor ignition. be clearly marked as a hazardous area. (5) Each vent shall be fitted with a (2) A means shall be provided for ei- flame screen of corrosion resistant wire ther the reclamation or safe venting of which is suitable for use with the al- vapors during the loading and unload- kylene oxide. ing operations. For this purpose, the (k)(1) Flexible metal hose fabricated safety relief or pressure vacuum relief of stainless steel or other acceptable valve shall be provided with a valved material, resistant to the action of the bypass to a vapor return line shore alkylene oxide, shall be fitted to the connection which shall be used when- liquid and vapor lines during cargo transfer. ever vapor return shore facilities are (2) The hose shall be marked with the available. In the event vapors must be maximum pressure guaranteed by the vented to the atmosphere, a vent riser manufacturer, and with his certifi- shall be connected to the vapor return cation with the words ‘‘Certified for line and extend at least 12 feet above lllll Oxide.’’ the highest level accessible to per- (3) Cargo hose intended for alkylene sonnel. The vent riser may be collaps- oxide service shall not be used for any ible for ease of stowage when not in other products except those which are use. The vent riser shall not be con- compatible with the alkylene oxide. nected to a safety relief or pressure (l) Vessel shall be electrically bonded vacuum valve. Vapor return lines or to the shore piping prior to connecting vent risers for tanks carrying the same the cargo hose. This electrical bonding class product may be connected to a shall be maintained until after the common header system if desired. cargo hose has been disconnected and Tanks carrying alkylene oxides shall any spillage has been removed. be vented independent of tanks car- (m) Cargo shall be discharged by rying other products. pumping or by displacement with ni- (3) The outlet of each vent riser shall trogen or other acceptable inert gas. In be fitted with acceptable corrosion-re- no case shall air be allowed to enter sistant flame screen of suitable mate- the system. During loading and unload- rial or a flame arrester suitable for use ing operations, the vapor shall not be with alkylene oxide. discharged to the atmosphere. Provi- (j) Ventilation. (1) All enclosed spaces sions shall be made to return all dis- within the hull shall be vented or ven- placed vapor to the loading facility. tilated in accordance with the provi- The loading rate and the pressure ap- sions of this subchapter except as oth- plied to the tank to discharge the erwise provided for in this subpart. cargo shall be so limited to prevent opening the safety relief valves. (2) The enclosed spaces in which the (n) During cargo transfer, a water cargo tanks are located shall be inerted hose with pressure to the nozzle, when by injection of a suitable inert gas or atmospheric temperatures permit, shall be well ventilated. shall be connected to a water supply (3) The enclosed spaces in which the for immediate use during filling and cargo tanks are located, if an inerting discharge operations and any spillage system is not installed, shall be fitted of alkylene oxide shall be immediately with forced ventilation of such capac- washed away. This requirement can be ity to provide a complete change of air met by facilities provided from shore. every three minutes and arranged in (o) Prior to disconnecting shore lines, such a manner that any vapors lost the pressure in the liquid and vapor into the space will be removed. The lines shall be relieved through suitable ventilation system shall be in oper- valves installed at the loading header. ation at all times cargo is being loaded The liquid and vapor discharged from or discharged. No electrical equipment these lines shall not be discharged to shall be fitted within the spaces or atmosphere. within ten feet of the ventilation ex- (p) The safety relief valves shall be haust from these spaces. tested by liquid, gas, or vapor pressure

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at least once every 2 years to deter- made to maintain the watertightness mine the accuracy of adjustment and, of the deck by means of watertight if necessary, shall be reset. Alkylene seals around such domes or trunks. The oxides shall not be used as the testing holds or enclosed spaces, in which the medium. ethylene oxide tanks are located, shall (q) The special requirements for not be used for any other purpose. How- ethylene oxide contained in § 151.50–12 ever, in open hopper type barges of a and for propylene oxide contained in suitable design approved for such serv- § 151.50–13 shall also be observed. ice, the weatherdeck may not be re- [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as quired to be watertight. amended by CGD 85–061, 54 FR 50966, Dec. 11, (2) All cargo tanks shall be installed 1989] with the manhole openings and all tank connections located above the § 151.50–12 Ethylene oxide. weatherdeck in the open. (a)(1) Ethylene oxide shall be carried (3) Tanks shall be electrically bonded in fixed, independent, pressure vessel to the hull. type cargo tanks, designed, con- (4) No welding of any kind shall be structed, arranged and, if necessary, done on cargo tanks or supporting equipped with machinery to maintain structure unless authorized by the the cargo temperature below 90 °F ex- Commandant. cept as otherwise provided for in para- (d) All cargo tanks, piping, valves, graph (a)(3) of this section. fittings, and similar equipment which (2) Ethylene oxide shall be loaded at may contain ethylene oxide in either a temperature below 70 °F. the liquid or vapor phase, including the (3) When ethylene oxide is to be vent risers, shall be insulated. Flanges transported at or near atmospheric need not be covered, but if covered, a pressure, the Commandant may permit small opening shall be left at the bot- the use of alternate methods of storage tom of the flange cover to detect leaks. which are consistent with the min- Insulation shall be of an approved inimum requirements of this subpart. combustible material suitable for use (b)(1) All cargo tanks shall be con- with ethylene oxide, which does not structed of a carbon steel or stainless significantly lower the autoignition steel acceptable to the Commandant. temperature and which does not react Impurities of copper, magnesium and spontaneously with ethylene oxide. other acetylide-forming metals shall be The insulation shall be of such thick- kept to a minimum. The chemical com- ness as to provide a thermal conduct- position of all steel used shall be sub- ance of not more than 0.075 B.t.u. per mitted to the Commandant for ap- square foot per degree Fahrenheit dif- proval prior to fabrication. Aluminum, ferential in temperature per hour. copper and other acetylide-forming (e)(1) When cooling systems are in- metals, such as silver, mercury, mag- stalled to maintain the temperature of nesium, and their alloys shall not be the liquid below 90 °F, at least two used as materials of construction for complete cooling plants, automatically tanks or equipment used in handling regulated by temperature variations ethylene oxide. within the tanks shall be provided; (2) Cargo tanks shall meet the re- each to be complete with the necessary quirements of Class I pressure vessels. auxiliaries for proper operation. The (3) Cargo tanks shall be designed for control system shall also be capable of the maximum pressure of vapor or gas being manually operated. An alarm used in discharging the cargo but in no shall be provided to indicate malfunc- case shall the design pressure of such tioning of the temperature controls. tanks be less than 75 pounds per square The capacity of each cooling system inch gauge. The tank shell and heads shall be sufficient to maintain the tem- shall not be less than 5⁄16-inch thick. perature of the liquid cargo at or below (c)(1) Cargo tanks shall be located the design temperature of the system. below deck in holds or enclosed spaces (2) An alternate arrangement may with the domes or trunks extended consist of three cooling plants, any two above the weather deck and termi- of which shall be sufficient to maintain nating in the open. Provisions shall be the temperature of the liquid cargo at

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or below the design temperature of the (2) Any inerting gas selected should system. be at least 98 percent pure and free of (3) Cooling systems requiring com- reactive materials, such as ammonia, pression of ethylene oxide are prohib- hydrogen sulfide, sulfur compounds, ited. and acetylene. (f) In addition to the shutoff valve re- (k) Prior to loading, a sample from quired, all tank connections larger the cargo tank will be taken to insure than one-half inch inside pipe size, ex- that the pad gas will meet the require- cept safety relief valves and liquid ments of paragraph (j) of this section level gauging devices, shall be fitted and that the oxygen content of the with either internal back pressure vapor space will be not more than 2 check valves or internal excess flow percent maximum. If necessary, a sam- valves in conjunction with a quick ple will be taken after loading to in- closing stop valve operable from at sure the vapor space meets this re- least two remote locations. The quick quirement. (l) The cargo piping shall be in- closing stop valve shall be of the ‘‘fail spected and tested at least once in each safe’’ type acceptable to the Com- 2 calendar years. mandant and shall be equipped with a (m) In those cases where the cargo fusible plug designed to melt between transfer hose used is not part of the 208 °F and 220 °F, which will cause the barge’s equipment, the person in quick closing valve to close automati- charge of the transfer operation shall cally in case of fire. The quick closing determine that the provisions of valve shall be located as close to the § 151.50–10(k) have been met before tank as possible. using this hose. A certificate of test, (g) Piping systems intended for supplied by the transfer facility, will ethylene oxide service shall not be used be considered as adequate for this defor any other product and shall be com- termination. pletely separate from all other sys- (n) The provisions of § 151.50–10 shall tems. The piping system shall be de- be complied with as a requirement for signed so that no cross connections shipping ethylene oxide. may be made either through accident (o) A hydrostatic test of 11⁄2 times the or design. design pressure shall be made on the (h) Each safety relief valve shall be cargo tanks at least once in each 4 set to start to discharge at not less years at the time the internal exam- than 75 pounds per square inch gauge, ination is made and at such other nor more than the design pressure of times as considered necessary by the the tank. Officer in Charge, Marine Inspection. (i) The filling density shall not ex- [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as ceed 83 percent. amended by CGD 85–061, 54 FR 50966, Dec. 11, (j)(1) The cargo shall be shipped 1989] under a suitable protective inerting gas system, such as nitrogen. When nitro- § 151.50–13 Propylene oxide. gen gas is used, the gas inerting system (a)(1) Pressure vessel cargo tanks shall be so designed that the vapor shall meet the requirements of Class II space above the liquid cargo will be pressure vessels. filled and maintained with a gas mix- (2) Cargo tanks shall be designed for ture of not less than 45 percent nitro- the maximum pressure expected to be gen. Other gases proposed for inerting encountered during loading, storing use may be given consideration by the and discharging the cargo but in no Commandant. Original charging only case shall the design pressure of pres- of protective inerting gas at the load- sure vessel tanks be less than thirty ing facility is not considered adequate. (30) pounds per square inch gauge. The A sufficient amount of spare inerting tank shell and heads shall not be less gas as approved by the Commandant than 5⁄16-inch thick. shall be provided on the vessel in order (b) When propylene oxide is carried to maintain the proper concentration on board a vessel, piping systems in of the gas in the event of normal leak- propylene oxide service shall not be age or other losses. used for any other product and shall be

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completely separate from all other sys- the lading may rise, whichever is the tems. The piping system shall be de- greater. The plate thickness of any signed so that no cross connection may part of the tank shall not be less than be made through inadvertence. three-eighths inch. (c) Each safety relief valve shall be (2) Gravity tank vents. (i) The outlet set to start to discharge at not less end of the gravity tank vent shall ter- than 30 pounds per square inch gauge, minate above the weatherdeck, clear of nor more than the design pressure of all obstructions and away from any the tank. source of ignition. (d) Filling density shall not exceed 80 (ii) The gravity tank vent shall ter- percent. minate in a gooseneck bend and shall (e)(1) The cargo shall be shipped be fitted with a single flame screen or under a suitable protective padding, two fitted flame screens as described in such as nitrogen gas. Other gases pro- § 151.03–25. No shutoff valve or frangible posed for use as padding may be given disk shall be fitted in the vent lines. consideration by the Commandant. Original charging only of protective (b)(1) Pressure vessel type cargo gas padding at the loading facility is tanks shall be independent of the ves- not considered adequate. A sufficient sel’s structure and shall be designed for amount of spare padding gas as ap- the maximum pressure to which they proved by the Commandant shall be may be subjected when compressed air provided on the vessel in order to is used to discharge the cargo, but in maintain the proper concentration of no case shall the design pressure be the gas in the event of normal leakage less than that indicated as follows: or other losses. Fluorosilicic Acid—50 pounds per square inch (2) Any padding gas selected should gauge. be at least 98 percent pure and free of Hydrochloric Acid—50 pounds per square reactive materials. inch gauge. (f) Prior to loading, a sample from Hydrofluorosilicic Acid, see Fluorosilicic Acid. the cargo tank will be taken to insure Phosphoric Acid—30 pounds per square inch that the pad gas will meet the require- gauge. ments of paragraph (e) of this section Sulfuric Acid—50 pounds per square inch and that the oxygen content of the gauge. vapor space will be not more than 2 (2) Pressure vessel type cargo tanks percent maximum. If necessary, a sam- shall be of welded construction meet- ple will be taken after loading to in- ing the requirements for Class II or sure the vapor space meets this re- Class III given in Part 54 of this chap- quirement. ter. (g) The cargo piping shall be sub- (3) When compressed air is used to jected to a hydrostatic test of 11⁄2 times the maximum pressure to which they discharge the cargo, the tank shall be may be subjected in service. fitted with a vent led to the atmos- (h) The Commandant may permit the phere in which a rupture disk shall be transportation of propylene oxide in installed. The rupture disk shall be de- other than pressure vessel type tanks if signed to burst at a pressure not exit is shown to his satisfaction that a ceeding the design pressure of the degree of safety is obtained consistent tank. An auxiliary vent to relieve the with the minimum requirements of pressure or vacuum in the tank during this subpart. the cargo transfer operation may be led (i) The provisions of § 151.50–10 shall from the vent line between the tank be complied with as a requirement for and the rupture disk. A shutoff valve shipping propylene oxide. may be fitted in the auxiliary vent. (c) Openings in tanks are prohibited § 151.50–20 Inorganic acids. below deck, except for access openings (a)(1) Gravity type cargo tanks shall used for inspection and maintenance of be designed and tested to meet the tanks, or unless otherwise specifically rules of the American Bureau of Ship- approved by the Commandant. Open- ping for a head of water at least 8 feet ings shall be fitted with bolted cover above the tank top or the highest level plates and acid-resistant gaskets.

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(d) Where special arrangements are 100 °F is not greater than that of 66° approved by the Commandant to per- Baume´ commercial sulfuric acid, may mit a pump suction to be led from the be transported in unlined gravity type bottom of the tank, the filling and dis- cargo tanks or unlined pressure vessel charge lines shall be fitted with shutoff type cargo tanks. valves located above the weatherdeck (2) Sulfuric acid of concentration of or operable therefrom. 65.25 percent (1.559 specific gravity) (52° (e) The outage shall not be less than Baume´) or greater concentrations, pro- 1 percent. vided the corrosive effect on steel (f) All enclosed compartments con- measured at 100 °F is not greater than taining cargo tanks and all machinery that of 52° Baume´ commercial sulfuric spaces containing cargo pumps shall be acid, may be transported in unlined fitted with effective means of ventila- pressure vessel type cargo tanks inde- tion. pendent of the vessel’s structure. (g) A separator shall be fitted in com- (3) Sulfuric acid of concentration not pressed air lines to the tank when air to exceed 65.25 percent (1.559 specific pressure is used to discharge the cargo. gravity) (52° Baume´) may be trans- (h) Only installed electric or portable ported in gravity type cargo tanks or battery lights shall be used during the pressure-vessel type cargo tanks which cargo transfer operations. Smoking is are lined with lead or other equally prohibited and the person in charge of suitable acid-resistant material accept- cargo transfer shall post No Smoking able to the Commandant. signs during cargo transfer operations. (4) Sulfuric acid of concentration not (i) Tanks approved for the transpor- to exceed 51 percent (1.408 specific tation of acid cargoes subject to this gravity) (42° Baume´) and spent sulfuric section shall not be used for the trans- acid resulting from the use of sulfuric portation of any other commodity, ex- acid in industrial processes may be cept upon authorization by the Com- transported in gravity type cargo mandant (CG–522). tanks which are lined with rubber or (j) Each cargo tank shall be subjected other equally suitable acid-resistant to an internal examination at least material acceptable to the Com- once in every 4 years. If cargo tank lin- mandant. See § 151.15–3(f)(2). ing is required and the lining of the (5) Spent or sludge sulfuric acid re- cargo tank has deteriorated in service sulting from the use of sulfuric acid in or is not in place, the Marine Inspector industrial processes may be trans- may require the tank to be tested by ported in unlined gravity type cargo such nondestructive means as he may tanks or unlined pressure vessel type consider necessary to determine its cargo tanks, provided the corrosive ef- condition. fect on steel is not greater than that of (k) The special requirements for commercial sulfuric acid as prescribed fluorosilicic acid in § 151.50–77, for hy- in paragraph (a)(1) of this section. drochloric acid in § 151.50–22, for (b) Heating coils will be the only ac- hydrofluorosilicic acid, see fluorosilicic ceptable means of liquefying frozen or acid, for phosphoric acid in § 151.50–23, congealed sulfuric acid. and for sulfuric acid in § 151.50–21 also (c) During cargo transfer, a water apply to the carriage of those acids. hose shall be connected to a water supply ready for immediate use and any [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as amended by GGD 80–001, 46 FR 63279, Dec. 31, leakage or spillage of acid shall be im- 1981; CGD 82–063b, 48 FR 4781, Feb. 3, 1983; mediately washed down. This require- CGD 88–100, 54 FR 40040, Sept. 29, 1989; CGD ment can be met by facilities provided 92–100, 59 FR 17028, Apr. 11, 1994] from shore. (d) The requirements of § 151.50–20 are § 151.50–21 Sulfuric acid. also applicable to the shipment of sul- (a) How sulfuric acid may be carried. (1) furic acid. Sulfuric acid of concentration of 77.5 percent (1.7019 specific gravity) (59.8° § 151.50–22 Hydrochloric acid. Baume´) or greater concentrations with (a) Hydrochloric acid shall be carried or without an inhibitor, provided the in gravity or pressure type cargo tanks corrosive effect on steel measured at which are independent of the vessel’s

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structure provided such tanks are lined of a phosphoric acid resistant stainless with rubber or other equally suitable steel. Vent piping, including flanges material acceptable to the Com- and fittings, shall be similarly pro- mandant. See § 151.15–3(f)(2). tected at least to the height of the (b) Notwithstanding the provisions of flangible disk if such is installed. § 151.50–20(b)(3), compressed air may be (e) Phosphoric acid adulterated by used to discharge hydrochloric acid other chemicals, inhibitors, oils, sol- from gravity type cargo tanks only if vents, etc., shall not be transported in the tanks are of cylindrical shape with bulk cargo tanks except upon author- dished heads, provided the air pressure does not exceed the design pressure of ization by the Commandant (CG–522). the tank but in no case shall it exceed (f) The requirements of § 151.50–20 are 10 pounds per square inch gauge. Such also applicable to the shipment of tanks shall be fitted with pressure re- phosphoric acid. lief devices and need not be vented to [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as the atmosphere as required by § 151.50– amended by CGD 82–063b, 48 FR 4781, Feb. 3, 20(b)(3). 1983] (c) During cargo transfer, a water hose shall be connected to a water sup- § 151.50–30 Compressed gases. ply and be ready for immediate use. (a) All tank inlet and outlet connec- Any leakage or spillage of acid shall be tions, except safety relief valves, liquid immediately washed down. This requirement can be met by facilities pro- level gauging devices, and pressure vided from shore. gauges shall be marked to designate (d) Spent hydrochloric acid or hydro- whether they terminate in the vapor or chloric acid adulterated by other liquid space. Labels, when used, shall chemicals, inhibitors, oils, solvents, be of corrosion-resistant materials and water, etc., shall not be transported in may be attached to valves. bulk except upon authorization by the (b) Venting. (1) Except as provided in Commandant (CG–522). paragraph (b)(2) of this section each (e) The requirements of § 151.50–20 are safety relief valve installed on a cargo also applicable to the shipment of hy- tank shall be connected to a branch drochloric acid. vent of a venting system which shall be [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as constructed so that the discharge of amended by CGD 88–100, 54 FR 40040, Sept. 29, gas will be directed vertically upward 1989] to a point at least 10 feet above the weatherdeck or the top of any tank or § 151.50–23 Phosphoric acid. house located above the weatherdeck. (a) The term phosphoric acid as used (2) Safety valves on cargo tanks in in this subpart shall include, in addi- barges may be connected to individual tion to phosphoric acid, aqueous solu- or common risers which shall extend to tions of phosphoric acid, and super a reasonable height above the deck. phosphoric acid. Where the escape of vapors from the (b) Phosphoric acid may be carried in venting system may interfere with either gravity or pressure type cargo towing operations, the installation tanks. The tanks shall be rubber-lined, shall be acceptable to the Com- or lined or clad with other suitable ma- mandant, and the arrangement shall be terial acceptable to the Commandant, or shall be fabricated of a phosphoric such as to minimize the hazard of es- acid resistant stainless steel. See caping vapors. Arrangements specially § 151.15–3(f)(2). provided for venting cargo tanks form- (c) The vessel’s shell plating shall not ing part of the hull on unmanned be used as any part of the boundaries of barges will be given special consider- gravity type cargo tanks. ation by the Commandant. (d) Cargo piping, including valves, (3) The capacity of branch vents or fittings, and flanges where exposed to vent headers shall depend upon the the acid, shall be rubber-lined, or lined, number of cargo tanks connected to coated or clad with other corrosion-re- such branch or header as provided in sistant material, or shall be fabricated Table 151.50–30(b)(3).

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TABLE 151.50–30(b)(3)—CAPACITY OF BRANCH maintained in the tanks or the tanks VENTS OR VENT HEADERS have been vented or washed internally. (d) Respiratory equipment. (1) At least Percent of total one approved self-contained breathing Number of cargo tanks valve dis- apparatus shall be available in a read- charge ily accessible location off the barge at 1 or 2 ...... 100 all times during the cargo transfer op- 3 ...... 90 erations. This equipment shall not be 4 ...... 80 considered to be part of the barge 5 ...... 70 equipment, and the barge shall not be 6 or more ...... 60 required to carry this equipment en (4) Return bends and restrictive pipe route. fittings are prohibited. Vents and head- (2) The approved self-contained ers shall be so installed as to minimize breathing apparatus, masks, and all stresses on safety relief valves and respiratory protective devices shall be their mounting nozzles. of types suitable for starting and oper- (5) When vent discharge risers are in- ating at the temperatures encountered, stalled, they shall be so located as to and shall be maintained in good oper- protect against physical damage and be ating condition. fitted with loose raincaps. (3) Personnel involved in the cargo (6) When vent discharge risers are in- transfer operations shall be adequately stalled and their installation in accord- trained in the use of the respiratory ance with the provisions of this para- equipment. graph results in restrictions in the op- (e) Filling densities and container de- eration of the barge due to navigation sign pressure. For compressed gases clearances, the vents may be designed transported at or near ambient tem- so as to be collapsible when passing peratures, the maximum filling den- under such low clearance obstacles. sities and minimum design pressure of (c) Repairs involving welding or burn- container as indicated in Table 151.50– ing. (1) Repairs involving welding or 30(e) shall apply. Deviations from the burning shall not be undertaken on the tabulated values shall be submitted to cargo tanks or piping while cargo in ei- the Commandant for approval. Where ther the liquid or vapor state is present cargo is to be carried at temperatures therein. below ambient, the tank shall be de- (2) Repairs involving welding or burn- signed in accordance with § 151.15– ing on parts of the barge other than 3(b)(3) and the maximum amount of cargo tanks or piping may be under- cargo shall be in accordance with taken provided positive pressure is § 151.45–6(b).

TABLE 151.50–30(e)—FILLING DENSITIES AND CONTAINER DESIGN PRESSURES

Maximum permitted filling Minimum design pressure of density (percent by weight, tank (pounds per square Kind of gas see § 151.03–21) inch gauge) Uninsulated Insulated Uninsulated Insulated tanks tanks tanks tanks

Ammonia, anhydrous ...... 57 58 250 215 Chlorine ...... 125 125 300 300 Dichlorodifluoromethane ...... 123 125 147 127 Dimethylamine ...... 61 62 46 36 Methyl chloride ...... 85 87 131 112 Monochlorodi-fluoromethane ...... 110 113 243 211 Vinyl chloride ...... 86 87 81 67

(f) The shell and head thickness of § 151.50–31, for nitrogen in § 151.50–36, liquefied compressed cargo tanks shall not be less than five-sixteenths inch. (g) The special requirements for ammonia (anhydrous) in § 151.50–32, for argon in § 151.50–36, for chlorine in

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and for vinyl chloride in § 151.50–34 also Threaded joints in cargo lines and apply to the carriage of those gases. vapor lines shall not be used in sizes above 1 inch internal diameter. Welded [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88–100, 54 FR 40040, Sept. 29, ‘‘hammerlock’’ unions or other unions 1989] approved by the Commandant may be used at terminal points of fixed barge § 151.50–31 Chlorine. piping. (a) Chlorine barges. Subparts 98.03 and (e) Each tank shall be provided with 98.20 of Part 98 of this chapter have liquid and vapor connections fitted been revoked. However, chlorine barges with manually operated shutoff valves that were certified in accordance with and with safety relief valves. All valves the requirements of subpart 98.20 of shall be bolted to the cover or covers part 98 of this chapter and having hulls specified in paragraph (b)(3) of this sec- modified, if necessary, to comply with tion and shall be protected against me- §§ 98.03–5(c) and 98.03–25(c) of this chap- chanical damage by a suitable protec- ter, shall be considered as complying tive metal housing. A drain connection with this part. shall be provided from the protective (b) Design and construction of cargo housing. tanks. (1) The cargo tanks shall meet (f) All liquid and vapor connections, the requirements of Class I pressure except safety relief valves, shall be vessels. fitted with automatic excess flow (2) Tanks shall be designed for a pres- valves, which shall be located on the sure of not less than 300 pounds per inside of the tank. Bypass openings are square inch gauge. For the maximum not permitted in excess flow valves. allowable working pressure of tanks in (g) Chlorine barge cargo piping shall service, see paragraph (q) of this sec- not be fitted with the nonreturn valves tion. specified by § 151.20–20(b). (3) Each tank shall be provided with (h) Liquid level gauging devices of one or more 24-inch inside diameter any type are prohibited on chlorine manhole, fitted with a cover located tanks. above the maximum liquid level and as (i) A pressure gauge shall be attached close as possible to the top of the tank. to the vapor shutoff valve or vapor line There shall be no other openings in the so as to indicate the pressure in the tank. tank at all times during loading and (c) Tanks may be installed ‘‘on deck’’ unloading. or ‘‘under deck’’ with the tank pro- (j) Piping including connections be- truding above deck. If a portion of the tween tank valves and fixed barge pip- tank extends above the weatherdeck, ing, shall be of a thickness of not less provision shall be made to maintain than Schedule 80. the weathertightness on the deck. All (k) In multiple tank installations the tanks shall be installed with the man- tanks shall not be interconnected by hole opening located above the piping or manifolds which may contain weatherdeck. Hopper type barges oper- liquid chlorine. Manifolding of vapor ating on protected inland waters may lines of individual tanks into a com- have tanks located in the hopper space. mon header for connection to shore is (d) All valves, flanges, fittings and permitted. More than one cargo tank accessary equipment shall be of a type may be filled or discharged at a time, suitable for use with chlorine and shall provided each tank is filled from or dis- be made of metal, corrosion-resistant charged to shore tanks through sepa- to chlorine in either the gas or liquid rate lines. phase. Cast or malleable iron shall not (l) Connections between fixed barge be used. Valves, flanges, and flanged piping and shore piping shall be fab- joints shall be 300 pounds A.N.S.I. ricated from one of the following: standard minimum with tongue and (1) Schedule 80 seamless pipe, having groove or raised face. Joints shall be flexible metallic joints. fitted with sheet lead or other suitable (2) Corrosion-resistant metallic pipe gasket material. Welded fittings shall (equivalent to Schedule 80) not subject be used wherever possible and the num- to deterioration by chlorine, having ber of pipe joints held to a minimum. flexible metallic joints.

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(3) Flexible metallic hose acceptable the cargo tanks. After disconnecting to the Commandant. If paragraphs the cargo piping, both ends of the line (k)(1) or (2) of this section are used, the shall be closed and all inlet and outlet flexible metallic joints shall meet the valves on the tank shall be plugged or requirements for cargo hose. See fitted with blind flanges. § 151.04–5(h). (o) During cargo transfer, every per- (m) Safety relief valves shall dis- son on the barge shall carry on his per- charge into the protective housing sur- son a respiratory protective device rounding the valves. Suitable provi- which will protect the wearer against sions shall be made to vent the hous- chlorine vapors and will provide res- ing. The arrangement shall be such as piratory protection for emergency es- to minimize the hazard of escaping va- cape from a contaminated area result- pors. (n) Cargo transfer operations. (1) The ing from cargo leakage. This res- amount of chlorine loaded into each piratory protective equipment shall be cargo tank shall be determined by of such size and weight that the person weight. Draft marks shall not be used wearing it will not be restricted in as a means of weighing. Any chlorine movement or in the wearing of a life- vapors vented during the filling oper- saving device. ation shall be disregarded when calcu- (p) During each internal inspection, lating the maximum amount of chlo- each cargo tank must be tested rine to be loaded into the cargo tanks. hydrostatically to 11⁄2 times the max- (2) Prior to the start of filling oper- imum allowable pressure as determined ations, care shall be exercised to insure by the safety relief valve setting. that the cargo tanks are empty, dry, (q) During each internal inspection, and free from foreign matter. each cargo tank excess flow valve and (3) After the filling operation is com- safety relief valve must be inspected pleted, the vapor in each cargo tank and tested in accordance with para- shall be analyzed to determine the per- graphs (g) and (i) of § 151.04–5 of this centage of gaseous chlorine in the chapter. vapor space. If it should contain less (r) When periodic inspection indi- than 80 percent chlorine by volume, va- cates that a cargo tank has deterio- pors shall be withdrawn through the rated in service, the maximum allow- vent or vapor line until the vapor in the cargo tanks contains at least 80 able pressure shall be recalculated, percent chlorine by volume. using the minimum thickness found by (4) After filling connections are re- actual measurement. The recalculated moved, upon completion of the loading maximum allowable pressure shall be of a cargo tank, all connections at the not less than 275 pounds per square tank shall be tested for leakage of inch gauge. If the recalculated max- chlorine by the aqua ammonia method. imum allowable pressure is less than (5) The chlorine in the cargo tanks 275 pounds per square inch gauge, the shall be discharged by the pressure dif- cargo tanks shall be withdrawn from ferential method. If the vapor pressure service. of the chlorine is not sufficient to force (s) The following substances shall not the liquid out of the tank, compressed be carried as stores on board barges air, or other nonreactive gas, may be transporting chlorine in bulk: hydro- used to secure the desired rate of dis- gen, methane, liquefied petroleum charge, provided the air or gas is oil- gases, coal gas, acetylene, ammonia, free and thoroughly dried by passing it turpentine, compounds containing me- over activated aluminum oxide, silica tallic powders, finely divided metals or gel, or other acceptable drying agent, finely divided organic materials. and provided the supply pressure is (t) The requirements of § 151.50–30 for limited to 75 percent of maximum al- compressed gases are also applicable to lowable pressure of chlorine tanks. (6) After completion of cargo trans- the shipment of chlorine. fer, any liquid chlorine in the cargo [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as piping shall be removed and cargo amended by CGD 85–061, 54 FR 50966, Dec. 11, transfer piping shall be disconnected at 1989; CGD 85–061, 55 FR 41918, Oct. 16, 1990]

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§ 151.50–32 Ammonia, anhydrous. wearing it will not be restricted in (a) The anhydrous ammonia tanks movement or in the wearing of a life- may be installed in the bulk liquid saving device. cargo tanks provided the liquid sur- (h) [Reserved] rounding the enclosed anhydrous am- (i) The requirements of § 151.50–30 for monia tanks complies with the fol- compressed gases are also applicable to lowing chemical and physical prop- the shipment of anhydrous ammonia. erties: [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as (1) Boiling point above 125 °F atmos- amended by CGD 85–061, 54 FR 50966, Dec. 11, pheric pressure. 1989] (2) Inert to ammonia at 100 °F at atmospheric pressure. § 151.50–34 Vinyl chloride (vinyl chlo- (3) Noncorrosive in the liquid and ride monomer). vapor phase to the ammonia tanks and (a) Copper, aluminum, magnesium, piping. mercury, silver, and their alloys shall (b) Copper, copper alloys, and copper not be used as materials of construc- bearing alloys shall not be used as mation for tanks, pipelines, valves, fit- terials of construction for tanks, pipe- tings, and other items of equipment lines, valves, fittings, and other items that may come in contact with vinyl of equipment that may come in contact chloride liquid or vapor. with anhydrous ammonia liquid or (b) Valves, flanges, and pipe fittings vapor. shall be of the tongue and groove or (c) Valves, flanges and pipe fittings raised-face type, fitted with suitable shall be of the tongue and groove or gasket material. Welded fittings shall raised-face type, fitted with suitable be used wherever possible and the num- gasket material. Welded fittings shall ber of pipe joints shall be held to a be used wherever possible and the num- minimum. Threaded joints are not per- ber of pipe joints shall be held to a mitted for pipe diameters exceeding 2 minimum. Threaded joints are not per- inches. Brazed joints are prohibited. mitted for pipe diameters exceeding 2 inches. Brazed joints are prohibited. (c) Each cargo tank shall be elec- (d) All enclosed spaces containing trically grounded to the hull. cargo tanks fitted with bottom outlet (d) The vessel shall be electrically connections shall be provided with me- bonded to the shore piping prior to con- chanical ventilation of sufficient ca- necting the cargo hose. This electrical pacity to assure a change of air every bonding shall be maintained until after 3 minutes. the cargo hose has been disconnected (e) Each cargo tank shall be elec- and any spillage has been removed. trically grounded to the hull. (e) To the extent he deems it nec- (f) When transferring cargo, a hose essary, the Officer in Charge, Marine shall be connected to a water supply so Inspection, may require that sufficient that if leakage of anhydrous ammonia insulation shall be removed from insu- occurs the vapor may be dispersed by lated tanks at least once in each 8 cal- the use of water fog. This requirement endar years to permit spot external ex- can be met by facilities provided from amination of the tanks and insulation shore. in accordance with § 151.04–5(c). (g) During cargo transfer operations, (f) The requirements of § 151.50–30 for every person on the vessel shall carry compressed gases are also applicable to on his person or have close at hand at the shipment of vinyl chloride. all times a canister mask approved for (g) The person in charge of cargo ammonia or each person shall carry on transfer shall ensure that: his person a respiratory protective de- (1) Cargo vapors are returned to the vice which will protect the wearer cargo tank or shore disposition for rec- against ammonia vapors and will pro- lamation or destruction during cargo vide respiratory protection for emer- transfer operations; gency escape from a contaminated area (2) Continuous monitoring for vinyl resulting from cargo leakage. This res- chloride vapor leaks is conducted piratory protective equipment shall be aboard a tank barge undergoing vinyl of such size and weight that the person chloride transfer operations. Fixed or

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portable instrumentation may be uti- ing a daily roster of authorized persons lized to ensure that personnel are not who may board the barge. exposed to vinyl chloride vapor con- (k) Employees engaged in hazardous centrations in excess of 1 ppm averaged operations, such as tank cleaning, over any eight hour period of 5 ppm must be provided, and be required to averaged over any period not exceeding wear and use respiratory protection in 15 minutes. The method of monitoring accordance with the provisions of 29 and measurement shall have an accu- CFR 1910.1017 and protective garments, racy (with a confidence level of 95 per- provided clean and dry for each use, to cent) of not less than plus or minus 50 prevent skin contact with liquid vinyl percent from 0.25 through 0.5 ppm, plus chloride. or minus 35 percent from over 0.5 ppm [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as through 1.0 ppm, and plus or minus 25 amended by CGD 74–167R, 40 FR 17026, Apr. percent over 1.0 ppm; 16, 1975; CGD 88–100, 54 FR 40040, Sept. 29, (3) Cargo transfer operation is discon- 1989] tinued or corrective action is initiated by the person in charge to minimize ex- § 151.50–36 Argon or nitrogen. posure to personnel whenever a vinyl (a) A cargo tank that contains argon chloride vapor concentration in excess or nitrogen and that has a maximum of 1 ppm is detected. If the vinyl chlo- allowable working pressure of 172 kPa ride vapor concentration exceeds 5 ppm (25 psig) or greater must have one of for over 15 minutes, action to reduce the following arrangements: the leak can be continued only if the (1) A refrigeration system that keeps respiratory protection requirements of the tank pressure below the safety re- 29 CFR 1910.1017 are met by all per- lief valve operating pressure when am- sonnel in the area of the leak; bient temperatures are 46 °C (115 °F) air (4) Those portions of cargo lines and 32 °C (90 °F) water. which will be open to the atmosphere (2) A relief valve or pressure control after piping is disconnected are free of valve that maintains the tank pressure vinyl chloride liquid and that the vinyl below the setting of the tank’s required chloride vapor concentration in the safety relief valve in ambient tempera- area of the cargo piping disconnect tures of 46 °C (115 °F) air and 32 °C (90 points is not greater than 5 ppm; °F) water. (5) Any restricted gauge fitted on a (b) A cargo tank with a maximum al- tank containing vinyl chloride is effec- lowable working pressure of less than tively out of service by locking or seal- 172 kPa (25 psig) is approved by the ing the device so that it cannot be Commandant (CG–522) on a case by used; and case basis. (6) A restricted gauge is not to be (c) Section 151.50–30 also applies to used as a ‘‘check’’ on the required the carriage of argon or nitrogen. closed gauge, nor as a means or sam- [CGD 88–100, 54 FR 40040, Sept. 29, 1989] pling. (h) The words ‘‘CANCER—SUSPECT § 151.50–40 Additional requirements AGENT’’ must be added to the warning for carbon disulfide (carbon bisul- signs required by 46 CFR 151.45–2(e). fide) and ethyl ether. (i) Signs bearing the legend: (a) The provisions of this section are applicable if specifically referenced in CANCER—SUSPECT AGENT IN THIS AREA the Special Requirements column of Table 151.05. PROTECTIVE EQUIPMENT REQUIRED (b) Cargo tanks shall be electrically AUTHORIZED PERSONNEL ONLY bonded to the hull of the vessel. A vessel shall be electrically bonded to the must be posted whenever hazardous op- shore piping prior to connecting the erations, such as tank cleaning, are in cargo hose. This electrical bonding progress. shall be maintained until after the (j) A tank barge undergoing cargo cargo hose has been disconnected and transfer operations must be designated any spillage has been removed. a ‘‘regulated area’’ having access lim- (c) Pumps may be used for dis- ited to authorized persons and requir- charging cargo: Provided, That they are

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the vertical submerged type designed (h) The requirements of § 151.50–40 are to avoid liquid pressure against the also applicable to the shipment of car- shaft gland and are suitable for use bon disulfide (carbon bisulfide). with the cargo. [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as (d) Provisions shall be made to main- amended by CGD 88–100, 54 FR 40040, Sept. 29, tain an inert gas padding in the cargo 1989] tank during loading, unloading and during transit. § 151.50–42 Ethyl ether. (e) Provisions shall be made to pre- (a)(1) Gravity tanks shall be designed vent any leakage being washed into the and tested to meet the rules of the waterways at the loading and unload- American Bureau of Shipping for a ing points. head of water at least 8 feet above the (f) The special requirements of tank top or the highest level the lading § 151.50–41 for carbon disulfide (carbon may rise, whichever is greater. All bisulfide) and § 151.50–42 for ethyl ether openings shall be in the top of the shall also be observed. tank. [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as (2) Pressure vessel type tanks shall amended by CGD 88–100, 54 FR 40029, Sept. 29, be designed for the maximum pressure 1989] to which they may be subjected when pressure is used to discharge the cargo, § 151.50–41 Carbon disulfide (carbon but in no case shall the design pressure bisulfide). be less than 50 pounds per square inch (a) All openings shall be in the top of gauge. All openings shall be in the top the tank. of the tank. (b) Loading lines shall terminate (b) Adequate natural ventilation near the bottom of the tank. shall be provided for the voids around (c) A standard ullage opening shall be the cargo tanks while the vessel is un- provided for secondary and emergency derway. If a power ventilation system sounding. is installed, all blowers shall be of non- (d) If a cargo discharge pump is used, sparking construction. Power driven it shall be inserted through a cylin- ventilation equipment shall not be lo- drical well extending from the tank top cated in the void spaces surrounding to a point near the tank bottom. A the cargo tanks. blanket of water shall be formed in this (c) Pressure relief valve settings well before attempting pump removal. shall not be less than 3 pounds per (e) Water or inert gas displacement square inch gauge for gravity tanks. may be used for discharging cargo pro- For pressure vessels, the relief valve vided the cargo system is designed for setting shall not exceed the design the expected pressure and temperature. pressure of the tank. This method for discharging may be (d) Inert gas displacement may be used with pressure type tanks only. used for discharging cargo from pres- (f) Adequate natural ventilation shall sure vessel tanks provided the cargo be provided for the voids around the system is designed for the expected cargo tanks while the vessel is under pressure and the discharge pressure way. During loading and unloading, does not exceed 50 pounds per square forced ventilation shall be used. The inch gauge or the design pressure of forced ventilation shall be of sufficient the tank, whichever is less. capacity to provide a complete change (e) No electrical equipment except of air within each void space every 5 for approved lighting fixtures shall be minutes. The ventilating fan shall be of installed in enclosed spaces adjacent to nonsparking construction. the cargo tanks. Lighting fixtures (g) Because of its low ignition tem- must be approved for use in Class I, perature and the close clearances re- Group C, hazardous locations. The in- quired to arrest its flame propagation, stallation of electrical equipment on carbon disulfide (carbon bisulfide) re- the weather deck shall comply with the quires safeguards beyond those re- requirements of part 111, subpart quired for any electrical hazard groups. 111.105 of this chapter.

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(f) Copper, silver, mercury and mag- cooled until the water above the cargo nesium or other acetylide forming met- has a temperature not exceeding 105 °F als and their alloys shall not be used as prior to the movement of the vessel. materials of construction for tanks, Upon presentation of satisfactory proof pipelines, valves, fittings and other that procedures followed will provide items of equipment that may come in adequate safety in transportation and contact with the cargo vapor or liquid. handling, the Commandant may au- (g) Precautions shall be taken to pre- thorize movement of the vessel fol- vent the contamination of ethyl ether lowing cooling of the water above the by strong oxidizing agents. cargo to a temperature exceeding 105 (h) The requirements of § 151.50–40 are °F. also applicable to the shipment of (g) Coils in which steam or hot water ethyl ether. is circulated to heat the cargo so that [CFGR 70–10, 35 FR 3714, Feb. 25, 1970, as it may be pumped shall be located out- amended by CGD 88–100, 54 FR 40040, Sept. 29, side the cargo tanks. 1989] (h) A fixed ballast piping system (including a power driven pump of ample § 151.50–50 Elemental phosphorus in capacity), or other means acceptable to water. the Commandant shall be installed so (a) Tanks shall be designed and test- that any void space surrounding the ed for a head equivalent to the design tanks may be flooded. lading of phosphorus and its water (i) All openings shall be in the top of blanket extended to 8 feet above the the tank and shall be fitted with bolted tank top. In addition, tank design cal- cover plates and gaskets resistant to culations shall demonstrate that the the attack of phosphorus pentoxide. tank can withstand, without rupture, a (j) All enclosed compartments con- single loading to the highest level to taining cargo tanks shall be provided which the water blanket may rise, if with effective means of ventilation. that exceeds 8 feet. Tanks shall not be (k) Cargo lines shall be traced with less than 5⁄16-inch thick. steam piping and secured thereto by (b) When a water displacement meth- lagging to prevent solidification of od of discharge is used, pressure vessel cargo during transfer operations. type cargo tanks, designed and tested (l) During cargo transfer, a water in accordance with Subchapter F of hose shall be connected to a water sup- this chapter shall be employed. Such ply ready for immediate use, and any tanks shall be designed for the max- spillage of phosphorus shall be imme- imum pressure to which they may be diately washed down. This requirement subjected when water pressure is used can be met by facilities provided from to discharge the cargo. shore. (c) Each cargo tank shall be fitted (m) At least two fresh air masks or with an approved pressure vacuum re- self-contained breathing apparatus lief valve set to discharge at a pressure shall be stowed on board the vessel at not exceeding 2 pounds per square inch. all times for use of personnel entering When transferring cargo, the vent dis- the tanks or adjacent spaces. charge shall lead overboard above the (n) Authorization from the Com- waterline. When pressure vessel type mandant (CG–522) shall be obtained to tanks are used, each tank shall be transport lading other than phosphorus fitted with a relief valve of suitable in the cargo tanks or to have on board size. any other cargo when phosphorus is (d) Sufficient outage shall be pro- laden in the tanks. vided to prevent the tank from being (o) Mechanical ventilation of suffi- liquid full at any time, but in no case cient capacity to insure a change of air shall the outage be less than 1 percent. within the cargo tanks every 3 minutes When pressure vessel type tanks are shall be provided during the inspection used, outage need not be provided. and maintenance of the cargo tanks. (e) The use of compressed air to dis- (p) Cargo tanks shall be electrically charge cargo is prohibited. bonded to the hull of the barge. A ves- (f) Cargo shall be loaded at a tem- sel shall be electrically bonded to the perature not exceeding 140 °F, and then shore piping prior to connecting the

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cargo hose. This electrical bonding (b) Stabilized. shall be maintained until after the [CGD 88–100, 54 FR 40040, Sept. 29, 1989] cargo hose has been disconnected. [CGFR 70–10, 35 FR 3714, Feb. 24, 1970, as § 151.50–73 Chemical protective cloth- amended by CGD 82–063b, 48 FR 4781, Feb. 3, ing. 1983] When table 151.05 refers to this section, the following apply: § 151.50–55 Sulfur (molten). (a) The person in charge of cargo (a) Ventilation (cargo tank): handling operations shall ensure that (1) Cargo tank ventilation shall be the following chemical protective provided to maintain the concentration clothing constructed of materials re- of H2S below one-half of its lower ex- sistant to permeation by the cargo plosive limit throughout the cargo being handled is worn by all personnel tank vapor space for all conditions of engaged in an operation listed in para- carriage; i.e., below 1.85 percent by vol- graph (b) of this section: ume. (1) Splash protective eyewear. (2) Where mechanical ventilation sys- (2) Long-sleeved gloves. tems are used for maintaining low gas (3) Boots or shoe covers. concentrations in cargo tanks, an (4) Coveralls or lab aprons. alarm system shall be provided to give warning if the system fails. NOTE: ‘‘Guidelines for the Selection of Chemical Protective Clothing’’, Third Edi- (3) Connections shall be provided to tion, 1987, available from the American Con- enable sampling of the atmosphere ference of Governmental Industrial Hygien- over the cargo in each cargo tank for ists, 1330 Kemper Meadow Drive, Cincinnati, analysis. OH 45240–1634, provides information on the (4) The ventilation system shall be proper clothing for the cargo being handled. designed and arranged to preclude the (b) The section applies during the fol- depositing of sulfur within the system. lowing operations: (b) Void spaces: (1) Sampling cargo. (1) Openings to void spaces adjacent (2) Transferring cargo. to cargo tanks shall be designed and (3) Making or breaking cargo hose fitted to prevent the entry of water, connections. sulfur or cargo vapors. (4) Gauging a cargo tank, unless (2) Connections shall be provided to gauging is by closed system. enable sampling and analyzing vapors (5) Opening cargo tanks. in void spaces. (c) Coveralls or lab aprons may be re- (c) Temperature controls shall be placed by splash suits or aprons con- provided in accordance with § 151.20–10 structed of light weight or disposable and applicable sections of Subpart materials if, in the judgment of the 151.40 of this part. Heat transfer media person in charge of cargo handling op- shall be steam, and alternate media erations, will require specific approval of the (1) Contact with the cargo is likely to Commandant. occur only infrequently and acciden- [CGFR 70–10, 35 FR 3714, Feb. 25, 1970] tally; and (2) The splash suit or apron is dis- § 151.50–60 Benzene. posed of immediately after contamina- The person in charge of a Coast tion. Guard inspected barge must ensure (d) Splash protective eyewear must that the provisions of part 197, subpart be tight-fitting chemical-splash gog- C, of this chapter are applied. gles, face shields, or similar items intended specifically for eye protection [CGD 88–040, 56 FR 65006, Dec. 13, 1991] from chemical splashing or spraying. (e) The person in charge of cargo han- § 151.50–70 Cargoes requiring inhibi- dling operations shall ensure that each tion or stabilization. person in the vicinity of an operation When table 151.05 refers to this sec- listed in the paragraph (b) of this section, that cargo must be— tion or in the vicinity of tanks, piping, (a) Inhibited; or or pumps being used to transfer the

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cargo wears splash protective eyewear to permit a pump suction to be led under paragraph (d) of this section. from the bottom of the tank, the filling and discharge lines must be fitted with [CGD 88–100, 54 FR 40040, Sept. 29, 1989, as amended by USCG–1999–6216, 64 FR 53227, Oct. shutoff valves located above the 1, 1999] weatherdeck or operable from it. (d) The outage may not be less than § 151.50–74 Ethylidene norbornene. 1 percent. When Table 151.05 refers to this sec- (e) An enclosed compartment con- tion, the following apply: taining, or a compartment adjacent to, (a) 151.50–5 (g) and (h) a cargo tank: (b) Rubber hoses or fittings may not (1) May have no electrical equipment be used in transfer operations. that does not meet or exceed class I-B electrical requirements; and [CGD 80–001, 46 FR 63279, Dec. 31, 1981] (2) Must have at least one gooseneck § 151.50–75 Ferric chloride solution. vent of 2.5 inch diameter or greater. The structural arrangement of the A containment system (cargo tank compartment must provide for the free piping system, venting system, and passage of air and gases to the vent or gauging system) carrying this solution vents. must be lined with rubber, corrosion (f) No lights may be used during the resistant plastic, or a material ap- cargo transfer operations, except in- proved by the Commandant (CG–522). stalled electric or portable battery [CGD 80–001, 46 FR 63279, Dec. 31, 1981, as lights. Smoking is prohibited and the amended by CGD 82–063b, 48 FR 4781, Feb. 3, person in charge of cargo transfer shall 1983; CGD 88–100, 54 FR 40041, Sept. 29, 1989; 55 ensure that ‘‘No Smoking’’ signs are FR 17276, Apr. 24, 1990] displayed during cargo transfer operations. § 151.50–76 Hydrochloric acid, spent (NTE 15%). (g) Tanks approved for the transportation of acid cargoes subject to this (a)(1) Gravity type cargo tanks must section may not be used for the trans- be designed and tested to meet the portation of any other commodity, ex- rules of the American Bureau of Ship- cept upon authorization by the Com- ping for a head of water at least 8 feet mandant (CG–522). above the tank top or the highest level (h) Each cargo tank must be exam- the lading may rise, whichever is ined internally at least once in every 4 greater. The plate thickness of any years. If the lining of the cargo tank part of the tank may not be less than has deteriorated in service or is not in three-eighths inch. A shell plating of a place, the Marine Inspector may re- barge may not be on the boundary of quire the tank to be tested by such any part of the cargo tank. nondestructive means as he may con- (2) Gravity tank vents must: sider necessary to determine its condi- (i) Terminate above the weatherdeck, tion. clear of all obstructions and away from any from any source of ignition; and [CGD 80–001, 46 FR 63279, Dec. 31, 1981, as (ii) Be fitted with a single flame amended by CGD 82–063b, 48 FR 4781, Feb. 3, screen or two fitted flame screens as 1983] described in § 151.03–25. Neither a shut- off valve nor a frangible disk may be § 151.50–77 Fluorosilicic acid (30% or fitted in the vent lines. less) (hydrofluorosilicic acid). (b) Openings in the tanks are prohib- (a) Hydrofluorosilicic acid must be ited below deck, except for access open- carried in gravity or pressure type ings used for inspection and mainte- cargo tanks independent of the vessel’s nance of tanks, or unless otherwise structure. The tanks must be lined specifically approved by the Com- with rubber or other equally suitable mandant (CG–522). Openings must be material approved by the Commandant fitted with bolted cover plates and (CG–522). See § 151.15–3(f)(2). acid-resistant gaskets. (b) Notwithstanding the provisions of (c) Where special arrangements are § 151.50–20(b)(3), no compressed air may approved by the Commandant (CG–522) be used to discharge hydrofluorosilicic

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acid from gravity type cargo tanks un- (b) A barge carrying a methyl acety- less: lene-propadiene mixture must have a (1) The tanks are of cylindrical shape refrigeration system that does not with dished heads, and compress the cargo vapor or have a re- (2) The air pressure does not exceed: frigeration system with the following (i) The design pressure of the tank, features: and (1) A vapor compressor that does not (ii) 10 pounds per square inch gauge. raise the temperature and pressure of The tanks must be fitted with pressure the vapor above 60 °C (140 °F) and 1.72 relief devices. MPa guage (250 psig) during its oper- (c) During cargo transfer, a water ations, and that does not allow vapor hose must be connected to a water sup- to stagnate in the compressor while it ply and be ready for immediate use. continues to run. Any leakage or spillage of acid must be (2) At the discharge piping from each immediately washed down. This re- compressor stage or each cylinder in quirement can be met by facilities pro- the same stage of a reciprocating com- vided from shore. pressor: [CGD 80–001, 46 FR 63279, Dec. 31, 1981, as (i) Two temperature actuated shut- amended by CGD 82–063b, 48 FR 4781, Feb. 3, down switches set to operate at 60 °C 1983; CGD 92–100, 59 FR 17028, Apr. 11, 1994] (140 °F) or less; § 151.50–79 Methyl acetylene-propa- (ii) A pressure actuated shutdown diene mixture. switch set to operate at 1.72 MPa gauge (250 psig) or less; and (a) The composition of the methyl acetylene-propadiene mixture at load- (iii) A safety relief valve set to re- ing must be within one of the following lieve at 1.77 MPa gauge (256 psig) or sets of composition limits: less anywhere except into the com- (1) Composition 1 is: pressor suction line. (i) Maximum methyl acetylene to (c) The piping system, including the propadiene molar ratio of 3 to 1; cargo refrigeration system, for tanks (ii) Maximum combined concentra- to be loaded with methyl acetylene- tion of methyl acetylene and propa- propadiene mixture must be com- diene of 65 mole percent; pletely separate from piping and refrig- (iii) Minimum combined concentra- eration systems for other tanks. If the tion of propane, butane, and isobutane piping system for the tanks to be load- of 24 mole percent, of which at least ed with methyl acetylene-propadiene one-third (on a molar basis) must be mixture is not independent, the re- butanes and one-third propane; and quired piping separation must be ac- (iv) Maximum combined concentra- complished by the removal of spool tion of propylene and butadiene of 10 pieces, valves or other pipe sections mole percent. and the installation of blank flanges at (2) Composition 2 is: these locations. The required separa- (i) Maximum methyl acetylene and tion applies to all liquid and vapor pip- propadiene combined concentration of ing, liquid and vapor vent lines and any 30 mole percent; other possible connections, such as (ii) Maximum methyl acetylene con- common inert gas supply lines. centration of 20 mole percent; [CGD 80–001, 46 FR 63279, Dec. 31, 1981] (iii) Maximum propadiene concentration of 20 mole percent; § 151.50–80 Nitric acid (70% or less). (iv) Maximum propylene concentration of 45 mole percent; (a) Tanks, cargo piping, valves, fit- (v) Maximum butadiene and tings, and flanges (where exposed to butylenes combined concentration of 2 the acid) must be lined with nitric acid mole percent; resistant rubber or fabricated from ni- (vi) Minimum saturated C4 hydro- tric acid resistant stainless steel. See carbon concentration of 4 mole per- § 151.15–3(f)(2). cent; and (b) During cargo transfer, a water (vii) Minimum propane concentration hose must be connected to a water sup- of 25 mole percent. ply, ready for immediate use. Any

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leakage or spillage of acid must be im- (6) Have no liquid level gauges other mediately washed down. This require- than closed or indirect gauges; ment can be met by facilities provided (7) Have all valves and the closed from shore. gauge that is required by Table 151.05 (c) Nitric acid contaminated by other bolted to the cover or covers that are chemicals, oils, solvents, etc. may not required in paragraph (d)(4) of this sec- be transported in bulk without an au- tion; thorization from the Commandant (8) Have a metal housing that is (CG–522). fitted with a drain and vent connection [CGD 80–001, 46 FR 63280, Dec. 31, 1981, as protecting all valves and the closed amended by CGD 82–063b, 48 FR 4781, Feb. 3, gauge within this housing against me- 1983; CGD 88–100, 54 FR 40041, Sept. 29, 1989] chanical damage; (9) Have all safety relief valves dis- § 151.50–81 Special operating require- charging into the protective housing; ments for heat sensitive cargoes. (10) Not be interconnected with an- When table 151.05 refers to this sec- other cargo tank by piping or manifold tion, the following apply to the cargo: that carriers cargo liquid, except vapor (a) Must not be carried in a tank lines connected to a common header, equipped with heating coils unless the and heating supply to the coils is discon- (11) Have an excess flow valve that is nected. located on the inside of the tank for (b) Must not be carried in a tank ad- every liquid and vapor connection, ex- jacent to another tank containing an cept the safety relief valve; elevated temperature cargo. (12) Have no bypass opening on any (c) Must not be carried in a deck excess flow valve. tank. (e) Cargo transfer operations: [CGD 80–001, 46 FR 63280, Dec. 31, 1981, as (1) May not be conducted with more amended by CGD 88–100, 54 FR 40041, Sept. 29, than one cargo tank at a time unles 1989] each tank is filled from or discharged to shore tanks through separate lines; § 151.50–84 Sulfur dioxide. (2) Must be conducted with connec- (a) Sulfur dioxide that is transported tions between fixed barge piping and under the provisions of this part may shore piping of either Schedule 40 pipe not contain more than 100 ppm of having flexible metallic joints that water. meet § 151.04–5(h) or of flexible metallic (b) Cargo piping must be at least hose that is acceptable to the Com- Schedule 40 pipe. mandant (CG–522); (c) Flanges must be 150 lb. A.N.S.I. (3) From barge to shore must be by Standard minimum with tongue and pressurization with an oil free, non-re- groove or raised face. active gas that has a maximum of 100 (d) A cargo tank must: ppm moisture; (1) Meet the requirements of a Class (4) Must be conducted with vapor re- I welded pressure vessel; turn to shore connections that ensure (2) Be designed for a maximum allow- that all vapor is returned to shore; and able working pressure of at least 125 (5) Must be conducted with every per- psig; son on the barge carrying a respiratory (3) Be hydrostatically tested every protective device that protects the two years to at least 188 psig; wearer against sulfur dioxide vapors (4) Be provided with one or more and provides respiratory protection for manholes that are fitted with a cover emergency escape from a contaminated sized not less than 15 inches by 23 area that results from cargo leakage. inches or 13 inches nominal diameter, (f) Respiratory protective equipment located above the maximum liquid must be of a size and weight that al- level, and as close as possible to the lows unrestricted movement and wear- top of the tank; ing of a lifesaving device. (5) Have no openings other than those (g) After the completion of cargo required in paragraph (d)(4) of this sec- transfer, all liquid sulfur dioxide in the tion; cargo piping must be removed and

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cargo transfer piping must be discon- with the cargo liquid or vapor. (Equiva- nected at the cargo tanks. After the lent to § 151.56–1(a),(c), and (d).) cargo piping is disconnected, both ends (e) Copper and copper bearing alloys of the line must be plugged or fitted shall not be used as materials of con- with blind flanges. struction for tanks, pipelines, valves, fittings, and other items of equipment [CGD 80–001, 46 FR 63280, Dec. 31, 1981, as amended by CGD 82–063b, 48 FR 4781, Feb. 3, that may come in contact with the 1983; CGD 88–100, 54 FR 40041, Sept. 29, 1989; 55 cargo liquid or vapor. (Equivalent to FR 17276, Apr. 24, 1990] § 151.56–1(b).) (f) Aluminum or copper or alloys of § 151.50–86 Alkyl (C7–C9) nitrates. either shall not be used as materials of (a) The carriage temperature of octyl construction for tanks, pipelines, nitrates must be maintained below 100 valves, fittings, and other items of °C (212 °F) in order to prevent the oc- equipment that may come in contact currence of a self-sustaining with the cargo vapor or liquid. (Equiva- exothermic decomposition reaction. lent to § 151.56–1(a) and (b).) (b) Octyl nitrates may not be carried (g) Aluminum, stainless steel, or in a deck tank unless the tank has a steel covered with a suitable protective combination of insulation and a water lining or coating shall be used as mate- deluge system sufficient to maintain rials of construction for tanks, pipe- the tank’s cargo temperature below 100 lines, valves fittings, and other items of equipment that may come in contact °C (212 °F) and the cargo temperature with the cargo liquid or vapor. (Equiva- rise at or below 1.5 °C(2.7 °F)/hour, for lent to § 151.58–1(a).) a fire of 650 °C (1200 °F). (h) Alkaline or acidic materials, such [CGD 88–100, 54 FR 40040, Sept. 29, 1989; CGD as caustic soda or sulfuric acid, should 92–100, 59 FR 17028, Apr. 11, 1994] not be allowed to contaminate this cargo. Subpart 151.55—Special Require- (i) For concentrations of 98 percent ments for Materials of Con- or greater, aluminum or stainless steel struction shall be used as materials of construction. For concentrations of less than 98 § 151.55–1 General. percent, 304L or 316 stainless steel shall (a) This section provides special re- be used as materials of construction. (j) Zinc, alloys that have more than quirements for the materials of con- 10 percent zinc by weight, and alu- struction of equipment that may come minum may not be used as materials of into contact with various cargoes. construction for tanks, pipelines, Table 151.05 contains specific require- valves, fittings, and other items of ments for various cargoes. (b) Copper, copper alloys, zinc, and equipment that may come in contact aluminum shall not be used as mate- with cargo liquid or vapor. (Equivalent rials of construction for tanks, pipe- to § 151.56–1(a) and (c).) lines, valves, fittings, and other items [CGFR 70–10, 35 FR 3714, Feb. 25, 1970, as of equipment that may come in contact amended by CGD 73–275R, 41 FR 3087, Jan. 21, with the cargo liquid or vapor. (Equiva- 1976; CGD 75–223, 42 FR 8378, Feb. 10, 1977; lent to § 151.56–1(a),(b), and (c).) CGD 88–100, 54 FR 40041, Sept. 29, 1989] (c) Copper, copper alloys, zinc, galvanized steel, and mercury shall not be Subpart 151.56—Prohibited used as materials of construction for Materials of Construction tanks, pipelines, valves, fittings, and other items of equipment that may § 151.56–1 Prohibited materials. come in contact with the cargo liquid When one of the following paragraphs or vapor. (Equivalent to § 151.56–1(b),(c), of this section is referenced in table and (g).) 151.05, the materials listed in that (d) Aluminum, magnesium, zinc, and paragraph may not be used in compo- lithium shall not be used as materials nents that contact the cargo or its of construction for tanks, pipelines, vapor: valves, fittings, and other items of (a) Aluminum or aluminum alloys. equipment that may come in contact (b) Copper or copper alloys.

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(c) Zinc, galvanized steel, or alloys 153.16 Requirements for foreign flag vessel having more than 10 percent zinc by permits. weight. 153.30 Special area endorsement. 153.40 Determination of materials that are (d) Magnesium. hazardous. (e) Lead. (f) Silver or silver alloys. Subpart B—Design and Equipment (g) Mercury. GENERAL VESSEL REQUIREMENTS [CGD 88–100, 54 FR 40041, Sept. 29, 1989] 153.190 Stability requirements. 153.201 Openings to accommodation, service Subpart 151.58—Required or control spaces. Materials of Construction 153.208 Ballast equipment. 153.209 Bilge pumping systems. § 151.58–1 Required materials. 153.214 Personnel emergency and safety equipment. When one of the following paragraphs 153.215 Safety equipment lockers. of this section is referenced in table 153.216 Shower and eyewash fountains. 151.05, only those materials listed in 153.217 Access to enclosed spaces and dedi- that paragraph may be used in compo- cated ballast tanks. nents that contact the cargo or its 153.219 Access to double bottom tanks serving as dedicated ballast tanks. vapor: (a) Aluminum, stainless steel, or CARGO CONTAINMENT SYSTEMS steel covered with a protective lining 153.230 Type I system. or coating. (See § 151.15–3(f)(2).) 153.231 Type II system. (b)–(c) [Reserved] 153.232 Type III system. (d) Solid austenitic stainless steel. 153.233 Separation of tanks from machinery, (e) Stainless steel or steel covered service and other spaces. 153.234 Fore and aft location. with a suitable protective lining or 153.235 Exceptions to cargo piping location coating. (See § 151.15–3(f)(2).) restrictions. [CGD 88–100, 54 FR 40041, Sept. 29, 1989] 153.236 Prohibited materials. 153.238 Required materials. 153.239 Use of cast iron. PART 152 [RESERVED] 153.240 Insulation.

CARGO TANKS PART 153—SHIPS CARRYING BULK 153.250 Double-bottom and deep tanks as LIQUID, LIQUEFIED GAS, OR cargo tanks. COMPRESSED GAS HAZARDOUS 153.251 Independent cargo tanks. MATERIALS 153.252 Special requirement for an independent cargo tank. Subpart A—General 153.254 Cargo tank access. 153.256 Trunks, domes, and openings of Sec. cargo tanks. 153.0 Availability of materials. 153.266 Tank linings. 153.1 Applicability. PIPING SYSTEMS AND CARGO HANDLING 153.2 Definitions and acronyms. EQUIPMENT 153.3 Right of appeal. 153.4 Incorporation by reference. 153.280 Piping system design. 153.7 Ships built before December 27, 1977 153.281 Piping to independent tanks. and non-self-propelled ships built before 153.282 Cargo filling lines. July 1, 1983: Application. 153.283 Valving for cargo piping. 153.8 Procedures for requesting an endorsed 153.284 Characteristics of required quick Certificate of Inspection. closing valves. 153.9 Foreign flag vessel endorsement appli- 153.285 Valving for cargo pump manifolds. cation. 153.292 Separation of piping systems. 153.10 Procedures for requesting alter- 153.294 Marking of piping systems. natives and waivers; termination of 153.296 Emergency shutdown stations. waivers. 153.297 Emergency actuators at the point of 153.12 IMO Certificates for United States cargo control. Ships. CARGO HANDLING SPACE VENTILATION 153.15 Conditions under which the Coast Guard issues a Certificate of Inspection 153.310 Ventilation system type. or Certificate of Compliance. 153.312 Ventilation system standards.

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153.314 Ventilation of spaces not usually oc- 153.462 Static discharges from inert gas sys- cupied. tems. 153.316 Special cargo pumproom ventilation 153.463 Vent system discharges. rate. 153.465 Flammable vapor detector. 153.466 Electrical equipment. CARGO PUMPROOMS DESIGN AND EQUIPMENT FOR POLLUTION 153.330 Access. CONTROL 153.332 Hoisting arrangement. 153.333 Cargo pump discharge pressure 153.470 System for discharge of NLS residue gauge. to the sea: Categories A, B, C, and D. 153.334 Bilge pumping systems. 153.480 Stripping quantity for Category B 153.336 Special cargo pump or pumproom re- and C NLS tanks on ships built after quirements. June 30, 1986: Categories B and C. 153.481 Stripping quantities and interim CARGO VENTING SYSTEMS standards for Category B NLS tanks on ships built before July 1, 1986: Category 153.350 Location of B/3 vent discharges. B. 153.351 Location of 4 m vent discharges. 153.482 Stripping quantities and interim 153.352 B/3 and 4 m venting system outlets. standards for Category C NLS tanks on 153.353 High velocity vents. ships built before July 1, 1986: Category 153.354 Venting system inlet. C. 153.355 PV venting systems. 153.483 Restricted voyage waiver for Cat- 153.358 Venting system flow capacity. egory B and C NLS tanks on ships built 153.360 Venting system restriction. before July 1, 1986: Category B and C. 153.361 Arrangements for removal of valves 153.484 Prewash equipment. from venting systems having multiple re- 153.486 Design and equipment for removing lief valves. NLS residue by ventilation: Categories 153.362 Venting system drain. A, B, C, and D. 153.364 Venting system supports. 153.488 Design and equipment for tanks car- 153.365 Liquid overpressurization protec- rying high melting point NLSs: Category tion. B. 153.368 Pressure-vacuum valves. 153.490 Cargo Record Book and Approved 153.370 Minimum relief valve setting for Procedures and Arrangements Manual: ambient temperature cargo tanks. Categories A, B, C, and D. 153.371 Minimum relief valve setting for re- 153.491 Waiver of certain equipment for frigerated cargo tanks. dedicated cargo tanks. 153.372 Gauges and vapor return for cargo vapor pressures exceeding 100 kPa SPECIAL REQUIREMENTS (approx. 14.7 psia). 153.500 Inert gas systems. 153.501 Requirement for dry inert gas. CARGO GAUGING SYSTEMS 153.515 Special requirements for extremely 153.400 General requirements for gauges. flammable cargoes. 153.404 Standards for containment systems 153.520 Special requirements for carbon di- having required closed gauges. sulfide. 153.406 Standards for containment systems 153.525 Special requirements for unusually having required restricted gauges. toxic cargoes. 153.407 Special requirements for sounding 153.526 Toxic vapor detectors. tube gauges. 153.527 Toxic vapor protection. 153.408 Tank overflow control. 153.530 Special requirements for alkylene 153.409 High level alarms. oxides. 153.545 Special requirements for liquid sul- CARGO TEMPERATURE CONTROL SYSTEMS fur. 153.554 Special requirements for acids. 153.430 Heat transfer systems; general. 153.555 Special requirements for inorganic 153.432 Cooling systems. acids. 153.434 Heat transfer coils within a tank. 153.556 Special requirements for sulfuric 153.436 Heat transfer fluids: compatibility acid and oleum. with cargo. 153.557 Special requirements for hydro- 153.438 Cargo pressure or temperature chloric acid. alarms required. 153.558 Special requirements for phosphoric 153.440 Cargo temperature sensors. acid. 153.559 Special requirements for nitric acid SPECIAL REQUIREMENTS FOR FLAMMABLE OR (less than 70 percent). COMBUSTIBLE CARGOES 153.560 Special requirements for Alkyl (C7– 153.460 Fire protection systems. C9) nitrates. 153.461 Electrical bonding of independent 153.565 Special requirements for tempera- tanks. ture sensors.

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153.602 Special requirements for cargoes re- 153.959 Approval to begin transfer oper- active with water. ations required. 153.964 Discharge by gas pressurization. TESTING AND INSPECTION 153.966 Discharge by liquid displacement. 153.806 Loading information. 153.968 Cargo transfer conference. 153.808 Examination required for a Certifi- 153.970 Cargo transfer piping. cate of Compliance. 153.972 Connecting a cargo hose. 153.809 Procedures for having the Coast 153.975 Preparation for cargo transfer. Guard examine a vessel for a Certificate 153.976 Transfer of packaged cargo or ship’s of Compliance. stores. 153.812 Inspection for Certificate of Inspec- 153.977 Supervision of cargo transfer. tion. 153.979 Gauging with a sounding tube. 153.980 Isolation of automatic closing Subpart C—Operations valves. 153.981 Leaving room in tank for cargo ex- DOCUMENTS AND CARGO INFORMATION pansion. 153.900 Certificates and authorization to 153.983 Termination procedures. carry a bulk liquid hazardsous material. 153.901 Documents: Posting, availability, SPECIAL CARGO PROCEDURES and alteration. 153.1000 Special operating requirements for 153.902 Expiration and invalidation of the cargoes reactive with water. Certificates of Compliance. 153.1002 Special operating requirements for 153.903 Operating a United States ship in heat sensitive cargoes. special areas: Categories A, B, and C. 153.1003 Prohibited carriage in deck tanks. 153.904 Limitations in the endorsement. 153.1004 Inhibited and stabilized cargoes. 153.905 Regulations required to be on board. 153.1010 Alkylene oxides. 153.907 Cargo information. 153.1011 Changing containment systems and 153.908 Cargo viscosity and melting point hoses to and from alkylene oxide service. information; measuring cargo tempera- 153.1020 Unusually toxic cargoes. ture during discharge: Categories A, B, 153.1025 Motor fuel antiknock compounds. and C. 153.1035 Acetone cyanohydrin or lactonitrile 153.909 Completing the Cargo Record Book solutions. and record retention: Categories A, B, C, 153.1040 Carbon disulfide. and D. 153.1045 Inorganic acids. 153.910 Cargo piping plan. 153.1046 Sulfuric acid. 153.912 Certficate of inhibition or stabiliza- 153.1052 Carriage of other cargoes in acid tion. tanks. GENERAL CARGO OPERATIONAL REQUIREMENTS 153.1060 Benzene. 153.1065 Sodium chlorate solutions. 153.920 Cargo quantity limitations. 153.921 Explosives. APPROVAL OF SURVEYORS AND HANDLING OF 153.923 Inerting systems. CATEGORIES A, B, C, AND D CARGO AND NLS RESIDUE GENERAL VESSEL SAFETY 153.1100 Responsibility of the person in 153.930 Cargo antidotes. charge. 153.931 Obstruction of pumproom 153.1101 Procedures for getting a Surveyor: ladderways. Approval of Surveyors. 153.932 Goggles and protective clothing. 153.1102 Handling and disposal of NLS res- 153.933 Chemical protective clothing. idue: Categories A, B, C, and D. 153.934 Entry into spaces containing cargo 153.1104 Draining of cargo hose: Categories vapor. A, B, C, and D. 153.935 Opening of tanks and cargo sam- 153.1106 Cleaning agents. pling. 153.1108 Heated prewash for solidifying NLS, 153.935a Storage of cargo samples. high viscosity NLS and required 153.936 Illness, alcohol, drugs. prewashes of NLS whose viscosity ex- ° MARKING OF CARGO TRANSFER HOSE ceeds 25 mPa sec at 20 C: Categories A, B, and C. 153.940 Standards for marking of cargo hose. 153.1112 Prewash for tanks containing Cat- egory A NILS residue. CARGO TRANSFER PROCEDURES 153.1114 Conditions under which a prewash 153.953 Signals during cargo transfer. may be omitted: Categories A, B, and C. 153.955 Warning signs during cargo transfer. 153.1116 Prewash for tanks unloaded with- 153.957 Persons in charge of transferring liq- out following the approved Procedures uid cargo in bulk or cleaning cargo and Arrangements Manual: Category B tanks. and C.

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153.1118 Prewash of Categories B and C EDITORIAL NOTE: Nomenclature changes to cargo tanks not meeting stripping stand- part 153 appear at 60 FR 50465, Sept. 29, 1995, ards: Categories B and C. 61 FR 50732, Sept. 27, 1996, and 74 FR 49235, 153.1119 When to prewash and discharge Sept. 25, 2009. NLS residues from a prewash; unloading an NLS cargo in a country whose Admin- istration is not signatory to MARPOL 73/ Subpart A—General 78: Categories A, B, and C. 153.1120 Procedures for tank prewash: Cat- § 153.0 Availability of materials. egories A, B, and C. (a) Various sections in this part refer 153.1122 Discharges of NLS residue from to the following documents which are tank washing other than a prewash: Cat- incorporated in Annex II of MARPOL egories A, B, and C. 73/78. 153.1124 Discharges of Category D NLS residue. (1) IMO Standards for Procedures and 153.1126 Discharge of NLS residue from a Arrangements for the Discharge of Nox- slop tank to the sea: Categories A, B, C, ious Liquid Substances, Resolution and D. MEPC 18(22), 1985 in effect on April 6, 153.1128 Discharge of NLS residue from a 1987. cargo tank to the sea: Categories A, B, C, (2) IMO International Code for the Con- and D. struction and Equipment of Ships Car- 153.1130 Failure of slops discharge recording rying Dangerous Chemicals in Bulk, Res- equipment; operating with, reporting olution MEPC 19(22), 1985 in effect on failures, and replacing pollution equipment: Category A, B, C, D. April 6, 1987. 153.1132 Reporting spills and non-complying (3) IMO Code for the Construction and discharges: Category A, B, C, and D. Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC MAINTENANCE 20(22), 1985 in effect on April 6, 1987. 153.1500 Venting system rupture disks. (b) The IMO documents listed in this 153.1502 Fixed ballast relocation. section are available from the fol- 153.1504 Inspection of personnel emergency lowing: and safety equipment. (1) IMO Secretariat, Publications section, 4 Albert Embankment, London Subpart D—Test and Calculation Proce- SE1 7SR, United Kingdom, Telex 23588; dures for Determining Stripping Quan- (2) New York Nautical Instrument tity, Clingage NLS Residue, and Total and Service Company, 140 West Broad- NLS Residue way, New York, NY 10013; 153.1600 Equipment required for conducting (3) Baker, Lyman & Company, 3220 the stripping quantity test. South I-10 Service Road, Metairie, LA 153.1602 Test procedure for determining the 70001. stripping quantity. (4) UNZ & Company, 190 Baldwin Ave- 153.1604 Determining the stripping quantity nue, Jersey City, NJ 07306. from the test results. 153.1608 Calculation of total NLS residue (5) Southwest Instrument Company, and clingage NLS residue. 235 West 7th Street, San Pedro, CA TABLE 1 TO PART 153—SUMMARY OF MINIMUM 90731. REQUIREMENTS (6) Marine Education Textbooks, 124 TABLE 2 TO PART 153—CARGOES NOT REGU- North Van Avenue, Houma, LA 70363– LATED UNDER SUBCHAPTERS D OR O OF 5895. THIS CHAPTER WHEN CARRIED IN BULK ON NON-OCEANGOING BARGES [CGD 81–101, 52 FR 7777, Mar. 12, 1987, as APPENDIX I TO PART 153 [RESERVED] amended by CGD 92–100, 59 FR 17028, Apr. 11, APPENDIX II TO PART 153—METRIC UNITS 1994] USED IN PART 153 § 153.1 Applicability. AUTHORITY: 46 U.S.C. 3703; Department of Homeland Security Delegation No. 0170.1. This part applies to the following: Section 153.40 issued under 49 U.S.C. 5103. (a) All United States self-propelled Sections 153.470 through 153.491, 153.1100 ships and those foreign self-propelled through 153.1132, and 153.1600 through 153.1608 ships operating in United States waters also issued under 33 U.S.C. 1903 (b). that carry in bulk a cargo listed in SOURCE: CGD 73–96, 42 FR 49027, Sept. 26, Table 1 or allowed in a written permis- 1977, unless otherwise noted. sion under § 153.900(d), unless—

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(1) The ship is carrying the cargo MARPOL 73/78 under Regulation 7 of under 33 CFR part 151; Annex II. (2) The ship is carrying the cargo in Annex II means Annex II to MARPOL a portable tank under subpart 98.30 or 73/78 and is the Annex to MARPOL 73/ 98.33 of this chapter; or 78 regulating the discharge of noxious (3) The ship is an offshore supply ves- liquid substances to the sea. sel carrying the cargo under subpart B means the breadth of the vessel 98.31 of the chapter; or and is defined in § 42.13–15(d) of this (b) All United States oceangoing non- chapter. self-propelled ships and those foreign Built means that a ship’s construc- non-self-propelled ships operating in tion has reached any of the following United States waters that carry in stages: bulk a Category A, B, or C NLS cargo (1) The keel is laid. listed in Table 1 or allowed in a written (2) The mass of the partially assem- permission under § 153.900(d), unless— bled ship is 50,000 kg. (1) The ship is carrying the cargo (3) The mass of the partially assem- under 33 CFR part 151; bled ship is one percent of the esti- (2) The ship is carrying the cargo in mated mass of the completed ship. a portable tank under subpart 98.30 or Cargo area means that part of a ves- 98.33 of this chapter; sel that includes the cargo tanks, (3) The ship is an offshore supply ves- spaces adjacent to the cargo tanks and sel carrying the cargo under subpart the part of the deck over the cargo 98.31 of this chapter; or tanks and adjacent spaces. (4) The ship’s Certificate of Inspec- Cargo containment system means a tion is endorsed for a limited short pro- cargo tank, its cargo piping system, its tected coastwise route and the ship is venting system, and its gauging sys- constructed and certificated primarily tem. for service on an inland route. Cargo handling space means an en- (c) All ships that carry a bulk liquid, closed space that must be entered dur- liquefied gas, or compressed gas cargo ing a routine loading, carriage, or dis- that is not— charge of cargo and that contains an (1) Listed in Table 1 of this part; element of the cargo containment sys- (2) Listed in Table 2 of this part; tem having a seal or packing to pre- (3) Carried under a written permis- vent the escape of cargo, such as a sion granted under § 153.900(d); valve, cargo pump, or cargo vapor com- (4) Carried under part 30 through 35, pressor. 98, 151, or 154 of this chapter; or Cargo piping system means a tank- (5) Carried as an NLS under 33 CFR ship’s permanently installed piping ar- part 151. rangement, including any valves and pumps, that carries cargo to or from a [CGD 81–101, 52 FR 7777, Mar. 12, 1987, as cargo tank. amended by CGD 84–025, 53 FR 15844, May 4, 1988; CGD 81–101, 53 FR 28974, Aug. 1, 1988 and Cargo tank means a tank that: 54 FR 12629, Mar. 28, 1989; CGD 84–043, 55 FR (1) Is part of or permanently affixed 37413, Sept. 11, 19905; CGD 96–041, 61 FR 50732, to a tankship; and Sept. 27, 1996] (2) Carries a cargo described in part 153, table 1—SUMMARY OF MINIMUM § 153.2 Definitions and acronyms. REQUIREMENTS in any quantity, in- As used in this part: cluding residual liquid or vapor. Accommodation spaces means halls, Certificate of Compliance means a cer- dining rooms, lounges, lavatories, cab- tificate issued by the Coast Guard that ins, staterooms, offices, hospitals, cine- a foreign flag vessel had been examined mas, game and hobby rooms, pantries and found to comply with the regula- containing no cooking appliances, and tions in this chapter. similar permanently enclosed spaces. Closed gauging system means an ar- Adequate reception facility means each rangement for gauging the amount of facility certified as adequate under 33 cargo in a tank, such as a float and CFR 158.160 and each facility provided tape or a magnetically coupled float by a Administration signatory to and indicator, that does not have any

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opening through which cargo vapor or High viscosity Category C NLS means liquid can escape. any Category C NLS having a viscosity Combustible is defined in § 30.10–15 of of at least 60 mPa.s at 20 °C and at this chapter. least 60 mPa.s at the time it is un- Commandant means Commandant of loaded. the U.S. Coast Guard. IMO means the International Mari- The term is often followed by a mailing time Organization (IMO, formerly code in parentheses. The mailing ad- Inter-Governmental Maritime Consult- dress should include any mailing code ative Organization or IMCO). and should be written as follows: IMO Bulk Chemical Code includes the Commandant (mailing code), U.S. Coast IMO International Code for the Construc- Guard, 2100 Second Street SW. Washington, tion and Equipment of Ships Carrying D.C. 20593–0001. Dangerous Chemicals in Bulk, Resolu- Control space is defined in § 30.10–19a tion MEPC 19(22), 1985 and the IMO of this chapter. Code for the Construction and Equipment Cycle, means that the tank washing of Ships Carrying Dangerous Chemicals in machine progresses through complete Bulk, Resolution MEPC 20(22), 1985. rotations until it reaches an orienta- IMO Certificate includes a Certificate tion identical to its starting orienta- of Fitness for the Carriage of Dan- tion. gerous Chemicals in Bulk issued under the IMO Code for the Construction and NOTE: For a typical one or two nozzle tank Equipment of Ships Carrying Dangerous washing machine that rotates in both the horizontal and vertical planes though more Chemicals in Bulk, Resolution MEPC slowly in one than the other, a cycle would 20(22), 1985 and an International Certifi- be at least one rotation in each plane of ro- cate of Fitness for the Carriage of Dan- tation. gerous Chemicals in Bulk issued under the IMO International Code for the Con- Dedicated ballast tank means a tank struction and Equipment of Ships Car- that is used only for ballast. rying Dangerous Chemicals in Bulk, Res- Emergency shutdown station means a olution MEPC 19(22), 1985. part of the tankship where the required emergency shutdown controls are clus- Independent, as applied to a cargo tered. piping, venting, heating or cooling sys- Flammable is defined in § 30.10–22 of tem means that the system is con- this chapter. nected to no other system, and has no Forward perpendicular is defined in means available for connection to an- § 42.13–15(b) of this chapter. other system. Hazardous material means a liquid Independent tank means a cargo tank material or substance that is— that is permanently affixed to the ves- (1) Flammable or combustible; sel, that is self-supporting, that incor- (2) Designated a hazardous substance porates no part of the vessel’s hull and under section 311(b) of the Federal that is not essential to the integrity of Water Pollution Control Act (33 U.S.C. the hull. 1321); or Intank cargo pump means a pump: (3) Designated a hazardous material (1) Located within the cargo tank it under 49 U.S.C. 5103. serves; and

NOTE: The Environmental Protection (2) Whose piping passes through only Agency designates hazardous substances in the top of the cargo tank. 40 CFR Table 116.A. The Coast Guard des- Integral tank means a cargo tank that ignates hazardous materials that are trans- also is part of or is formed in part by ported as bulk liquids by water in § 153.40. the vessel’s hull structure so that the High viscosity NLS includes high vis- tank and the hull may be stressed by cosity Category B NLS and high vis- the same loads. cosity Category C NLS. IOPP Certificate means an Inter- High viscosity Category B NLS means national Oil Pollution Prevention Cer- any Category B NLS having a viscosity tificate required under 33 CFR 151.19. of at least 25 mPa.s at 20 °C and at L means the length of the vessel and least 25 mPa.s at the time it is un- is defined in § 42.13–15(a) of this chap- loaded. ter.

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Liquid means each substance having Pumproom means any enclosed space a vapor pressure of 172 kPa or less at containing a pump that is part of a 37.8 °C. cargo containment system. Marine Inspector is defined in § 30.10– Reception facility means anything ca- 43 of this chapter. pable of receiving NLS residues in a MARPOL 73/78 means the Inter- country whose Administration is not national Convention for Prevention of signatory to MARPOL 73/78 and each Pollution from Ships, 1973 (done at adequate reception facility. London, November 2, 1973), modified by Refrigerated tank means a cargo tank the Protocol of 1978 relating to the that is equipped to carry a cargo that International Convention for Preven- must be cooled in order to keep the tion of Pollution from Ships, 1973 (done cargo’s vapor pressure from exceeding at London, on February 17, 1978). the tank’s pressure-vacuum or safety Master means the person-in-charge of relief valve setting under ambient con- a self-propelled or non-self-propelled ditions of 32 °C (approx. 90 °F) still ship. water and 46 °C (approx. 115 °F) still Mixture means a mixture containing air. only the substances described in con- Relief valve setting means the inlet junction with the term. line pressure at which a vent system’s Nearest land has the same meaning as pressure-vacuum or safety relief valve in 33 CFR 151.05(h). fully opens. Noxious liquid substance (NLS) Residues and mixtures containing NLSs means— (NLS residue) means— (1) Each substance listed in 33 CFR (1) Any Category A, B, C, or D NLS 151.47 or 33 CFR 151.49; cargo retained on the ship because it fails to meet consignee specifications; (2) Each substance having an ‘‘A,’’ (2) Any part of a Category A, B, C, or ‘‘B,’’ ‘‘C,’’ or ‘‘D’’ beside its name in D NLS cargo remaining on the ship the column headed ‘‘Pollution Cat- after NLS is discharged to the con- egory’’ in Table 1; and signee, including but not limited to (3) Each substance that is identified puddles on the tank bottom and in as an NLS in a written permission sumps, clingage in the tanks, and sub- issued under § 153.900(c). stance remaining in the pipes; or NLS Certificate means an Inter- (3) Any material contaminated with national Pollution Prevention Certifi- a Category A, B, C, or D NLS cargo, in- cate for the Carriage of Noxious Liquid cluding but not limited to bilge slops, Substances in Bulk issued under Annex ballast, hose drip pan contents, and II of MARPOL 73/78. tank wash water. Oceangoing ship has the same mean- Restricted gauging system means a ing as in 33 CFR 151.05(j). method of gauging the amount of cargo Officer in Charge, Marine Inspection, is in a tank through an opening of lim- defined in § 1.05(b) of this chapter. ited size that restricts or prevents the Open gauging means an arrangement release of cargo vapors from the tank for gauging the amount of cargo in a vapor space. tank through a large opening, such as a Safety relief (SR) valve means a nor- tank hatch or ullage opening. mally closed valve that opens under a Open venting system means a venting preset positive pressure. system that always allows vapor to Separate and separated, as applied to a flow freely to and from the tank. cargo piping, venting, heating or cool- Phosphoric acid means phosphoric ing system, means either an inde- acid, superphosphoric acid, and aque- pendent system or one that may be dis- ous solutions of phosphoric acid. connected from all other systems by: Pressure-vacuum (PV) valve means a (a) Removing spool pieces or valves valve that is normally closed and and blanking the open pipe ends; or which opens under a preset positive (b) Blocking each system inter- pressure or a vacuum. connection with two blind flanges in Prewash means a tank washing oper- series and providing a means of detect- ation that meets the procedure in ing leakage into the pipe section be- § 153.1120. tween the flanges.

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Service spaces means spaces outside Register in accordance with 5 U.S.C. the cargo area used for galleys, pan- 552(a). To enforce any edition other tries containing cooking appliances, than that specified in paragraph (b) of lockers, store rooms, workshops other this section, the Coast Guard must than those forming part of machinery publish notice of change in the FED- spaces, and trunks to such spaces. ERAL REGISTER and make the material Ship means a vessel of any type what- available to the public. All approved soever, including hydrofoils, air-cush- material is on file at the U.S. Coast ion vehicles, submersibles, floating Guard, Office of Operating and Envi- craft whether self-propelled or not, and ronmental Standards (CG–522), 2100 2nd fixed or floating platforms. St., SW., Stop 7126, Washington, DC Slop tanks include slop tanks and 20593–7126, or at the National Archives cargo tanks used as slop tanks. and Records Administration (NARA). Solidifying NLS means a Category A, For information on the availability of B, or C NLS that has a melting point— this material at NARA, call 202–741– (1) Greater than 0 °C but less than 15 6030, or go to: http://www.archives.gov/ °C and a temperature, measured under federallregister/ the procedure in § 153.908(d), that is less codeloflfederallregulations/ than 5 °C above its melting point at the ibrllocations.html. All material is time it is unloaded; or available from the sources indicated in (2) 15 °C or greater and has a tem- paragraph (b) of this section. perature, measured under the proce- (b) The material approved for incor- dure in § 153.908(d), that is less than 10 poration by reference in this part and °C above its melting point at the time the sections affected are: it is unloaded. American National Standards Institute (ANSI) Solution means a water solution. Special area means the Baltic Sea 11 West 42nd Street, New York, NY 10036 Area as defined in 33 CFR 151.13(a)(2) ANSI B16.5, Pipe Flanges and Flanged and the Black Sea Area as defined in 33 Fittings, 1988 ...... 153.940 CFR 151.13(a)(3). ANSI B16.24, Bronze Pipe Flanges and SR venting system means a venting Flanged Fittings, 1979...... 153.940 ANSI B16.31, Non-Ferrous Flanges, system in which an SR valve controls 1971...... 153.940 vapor flow from the cargo tank. Tankship has the same meaning as American Society for Testing and Materials ‘‘ship’’. (ASTM) Venting system means a permanent 100 Barr Harbor Drive, West Conshohocken, piping arrangement leading from a PA 19428–2959. cargo tank and used to control the flow ASTM F 1122–87 (1992), Standard Speci- of vapor to and from the tank. fication for Quick Disconnect Cou- plings ...... 153.940 [CGD 73–96, 42 FR 49027, Sept. 26, 1977] ASTM F 1271–90 (1995), Standard Speci- EDITORIAL NOTE: For FEDERAL REGISTER ci- fication for Spill Valves for Use in tations affecting § 153.2, see the List of CFR Marine Tank Liquid Overpressure Sections Affected, which appears in the Protections Applications...... 153.365 Finding Aids section of the printed volume [CGD 88–032, 56 FR 35826, July 29, 1991, as and at www.fdsys.gov. amended by CGD 96–041, 61 FR 50732, Sept. 27, 1996; CGD 97–057, 62 FR 51048, Sept. 30, 1997; § 153.3 Right of appeal. USCG–1999–5151, 64 FR 67183, Dec. 1, 1999; 69 Any person directly affected by a de- FR 18803, Apr. 9, 2004] cision or action taken under this part, by or on behalf of the Coast Guard, § 153.7 Ships built before December 27, 1977 and non-self-propelled ships may appeal therefrom in accordance built before July 1, 1983: Applica- with subpart 1.03 of this chapter. tion. [CGD 88–033, 54 FR 50381, Dec. 6, 1989] (a) Definitions. (1) Permit means a Cer- tificate of Inspection, Letter of Com- § 153.4 Incorporation by reference. pliance, or Certificate of Compliance. (a) Certain material is incorporated (2) Existing tankship means a tankship by reference into this part with the ap- for which a contract was let on or be- proval of the Director of the Federal fore December 27, 1977.

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(3) Letter of Compliance in this section (iii) The tankship meets any addi- means a letter issued by the Coast tional requirements the Commandant Guard before 27 December 1977 which (CG–522) may prescribe. permitted a foreign flag tankship to (c) An existing tankship must meet carry a bulk cargo regulated under this all the requirements of this part except part. as provided in paragraphs (c) (3), (4), (5) (b) Endorsements for existing tankships. and (6) of this section. (1) The Coast Guard endorses the per- (1)–(2) [Reserved] mit of an existing tankship to carry a (3) The Commandant (CG–522) con- cargo listed in Table 1 if: siders on a case by case basis endorsing (i) The tankship held a permit on De- as a type II containment system one cember 27, 1977, endorsed for the cargo that fails to meet §§ 153.231(b), 153.234, in question; 172.130 and 172.133 of this chapter if the (ii) The tankship meets the construc- tankship and containment system tion standards under which the Coast meet the following minimum condi- Guard issued the permit; and tions: (i) The tankship has a loadline cer- (iii) The tankship meets the stand- tificate. ards in paragraph (c) of this section. (ii) The cargo tank is not part of the (2) The Coast Guard endorses the per- tankship’s shell plating. mit of an existing tankship to carry a (iii) The distance between the bottom cargo listed in Table 1 if: plating of the cargo tank and the bot- (i) The tankship held a permit on De- tom shell plating of the tankship is at cember 27, 1977; least 76 cm measured parallel to the (ii) The Coast Guard did not require vertical axis of the tankship. the permit to be endorsed with the (4) The Commandant (CG–522) con- name of the cargo at any time before siders on a case by case basis endorsing December 27, 1977; a containment system as a type II con- (iii) The tankship meets the containment system if: struction standards under which the (i) The containment system is modi- Coast Guard issued the permit; fied to meet § 153.231(b) by adding dou- (iv) The tankship carried the cargo in ble bottoms or wing tanks; and question; and (ii) The tankship can survive the (v) The tankship meets the standards damage described in §§ 172.135 and in paragraph (c) of this section. 172.150 of this chapter to those parts of (3) The Coast Guard endorses the per- the tankship other than machinery mit of an existing tankship to carry a spaces. cargo listed in Table 1 if: (5) The Commandant (CG–522) con- (i) The tankship held a permit on De- siders on a case by case basis endorsing cember 27, 1977 endorsed to carry class as a type III containment system one B or C poisons under 46 CFR part 39; that does not meet §§ 153.234, 172.130 and 172.133 of this chapter if the tankship (ii) The cargo in question is a class B has a load line certificate. or C poison; (6) The Commandant (CG–522) con- (iii) The tankship meets the considers on a case by case basis endorsing struction standards in 46 CFR part 39; the tankship to carry cargoes listed in and Table 1 of this part if the tankship does (iv) The tankship meets the stand- not meet §§ 153.217, 153.219 and 153.254. ards in paragraph (c) of this section. (d) Except as required by this para- (4) The Commandant (CG–522) con- graph, subpart B of this part does not siders on a case by case basis endorsing apply to a non-self-propelled ship that the permit of an existing tankship to carries an NLS cargo under this part carry a cargo listed in Table 1 if: if— (i) The tankship does not come with- (1) The ship was built before July 1, in the categories described in para- 1983; graphs (b) (1) through (3) of this sec- (2) The ship carries no NLS cargo or tion; NLS residue at any time it is in waters (ii) The tankship meets paragraph (c) of another Administration signatory to of this section; and MARPOL 73/78;

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(3) The NLS does not require a type I to determine if the ship meets this containment system; part. (4) The ship meets all requirements (b) The Coast Guard notifies the ap- in parts 30 through 34 and part 151 of plicant in writing— this chapter that apply to the cargo; (1) Whether any further information (5) The ship meets the provisions in is necessary to evaluate the request for § 153.216 and §§ 153.470 through 153.491 the endorsed Certificate of Inspection; applying to the NLS category of that and cargo; (2) Of the outcome of the request for (6) When the ‘‘Special Requirements’’ the endorsed Certificate of Inspection. column of Table 1 contains an entry for (c) The Coast Guard returns the Pro- § 153.408 or § 153.409 beside the cargo cedures and Arrangements Manual name, the ship meets the section, ex- stamped ‘‘Approved’’ or indicating cept the system prescribed by the sec- what corrections are necessary. tion need be capable of operation only NOTE: The procedures for requesting an during loading; IOPP Certificate are found in 33 CFR Part (7) [Reserved] 151. (8) No part of the ship’s hull plating is a component of a cargo tank if the [CGD 81–101, 52 FR 7779, Mar. 12, 1987] cargo tank is endorsed to carry a cargo § 153.9 Foreign flag vessel endorse- having a type II containment system in ment application. Table 1. (a) Application for a vessel whose flag [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as administration is signatory to MARPOL amended by CGD 78–128, 47 FR 21204, May 17, 73/78 and issues IMO Certificates. A per- 1982; CGD 82–063b, 48 FR 4781, Feb. 3, 1983; son who desires a Certificate of Com- CGD 79–023, 48 FR 51009, Nov. 4, 1983; CGD 81– pliance endorsed to carry a cargo in 052, 50 FR 8733, Mar. 5, 1985; CGD 81–101, 52 FR 7779, Mar. 12, 1987; CGD 81–101, 53 FR table 1 of this part, as described in 28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, § 153.900 of this part, must request the 1989; CGD 95–072, 60 FR 54106, Oct. 19, 1995] endorsement from the cognizant Offi- cer in Charge, Marine Inspection and § 153.8 Procedures for requesting an have aboard the vessel copies of IMO endorsed Certificate of Inspection. Certificates issued by the vessel’s ad- (a) When applying for the endorsed ministration and— Certificate of Inspection that § 153.900 (1) An additional classification soci- requires for a ship to carry a cargo list- ety statement that the vessel complies ed in Table 1, the applicant must pro- with § 153.530 (b), (d), and (p)(1) if a per- ceed as follows: son desires a Certificate of Compliance (1) Send a letter to one of the Coast endorsed with the name of an alkylene Guard offices listed in § 91.55–15 of this oxide; and chapter that includes— (2) An additional classification soci- (i) A request for the endorsed Certifi- ety statement that the vessel complies cate of Inspection; with §§ 153.370, 153.371, and 153.438 if a (ii) The name of the ship; and person desires a Certificate of Compli- (iii) A list of the cargoes from Table ance endorsed with the name of a cargo 1 the applicant wishes the endorsement whose vapor pressure exceeds 100 kPa to allow. absolute at 37.8 °C (approximately 14.7 (2) Supply to the Coast Guard when psia at 100 °F). requested— (b) Application for a vessel whose flag (i) Hull type calculations; administration does not issue IMO Certifi- (ii) The plans and information listed cates. A person who desires a Certifi- in §§ 54.01–18, 56.01–10, 91.55–5 (a), (b), (d), cate of Compliance endorsed with the (g), and (h), and 110.25–1 of this chapter; name of a cargo in Table 1 of this part, (iii) A copy of the Procedures and Ar- as described in § 153.900, must submit rangements Manual required by an application, in a written or elec- § 153.490; and tronic format, to Commanding Officer, (iv) Any other ship information, in- U.S. Coast Guard Marine Safety Cen- cluding plans, design calculations, test ter, 2100 2nd St. SW., Stop 7102, Wash- results, certificates, and manufactur- ington, DC 20593–7102, that includes the er’s data, that the Coast Guard needs following information:

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(1) A copy of the vessel’s Cargo Ship to the Commandant (CG–522) explain- Safety Construction Certificate and ing— Cargo Ship Safety Equipment Certifi- (i) The requirement in this part that cate issued under the International would not be met and the reason why; Convention for Safety of Life at Sea, (ii) The alternative the person pro- 1974. poses to be substituted; and (2) A list of those cargoes for which (iii) How the alternative would en- the Letter of Compliance is to be ensure a level of safety and pollution pro- dorsed. tection at least equal to that of the re- (3) The specific tanks that are to be quirement for which the alternative endorsed for each cargo. would substitute; (4) The names of the U.S. ports in (2) The alternative does not sub- which the person anticipates operating stitute an operational standard for a the vessel. design or equipment standard; and (5) The name of the vessel’s flag ad- (3) The Commandant (CG–522) deter- ministration. mines that the alternative provides a (6) The name of the society that level of protection for purposes of safe- classes the vessel. ty and pollution at least equal to the (7) A brief description of the vessel’s requirement in this part. cargo containment systems. (b) The Coast Guard considers grant- (8) Hull type calculations. ing a waiver of a requirement for which (9) The plans and information listed this part allows a waiver if the person in §§ 54.01–18, 56.01–10, 91.55–5 (a), (b), (d), wishing the waiver sends a written ap- (g), and (h), and 111.05–5(d) of this chap- plication to the Commandant (CG–522) ter. that includes— (c) Conditions applying to all Certifi- cate of Compliance applications. (1) If re- (1) A citation of the regulation that quested by the Commanding Officer, allows the waiver; and U.S. Coast Guard Marine Safety Cen- (2) Any information and pledges that ter, a person desiring a Certificate of the regulation requires to be submitted Compliance for a vessel must furnish with the application for the waiver. any other vessel information such as (c) The Commandant notifies the ap- plans, design calculations, test results, plicant in writing— certificates, and manufacturer’s data, (1) Whether any further information that the Coast Guard needs to deter- is necessary to evaluate the request for mine that the vessel meets the stand- an alternative or waiver; and ards of this part. (2) Of the outcome of the request for (2) Correspondence with the Coast an alternative or waiver. Guard and vessel information sub- (d) A waiver issued under this part mitted under this part must be in terminates if any— English except IMO Certificates which (1) Information required to be sup- may be in French. plied with the application for the waiver changes; [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as (2) Pledges required to be supplied amended by CGD 81–052, 50 FR 8733, Mar. 5, 1985; 50 FR 15895, Apr. 23, 1985; CGD 88–070, 53 with the application for the waiver are FR 34535, Sept. 7, 1988; CGD 88–070, 53 FR repudiated; 37570, Sept. 27, 1988; CGD 89–025, 54 FR 19571, (3) Restrictions or procedures apply- May 8, 1989; CGD 90–008, 55 FR 30663, July 26, ing to operations under the waiver are 1990; CGD 92–100, 59 FR 17028, Apr. 11, 1994; violated; or CGD 95–027, 61 FR 26008, May 23, 1996; USCG– (4) Requirements in the section of 2007–29018, 72 FR 53967, Sept. 21, 2007] this part authorizing the waiver are violated. § 153.10 Procedures for requesting al- ternatives and waivers; termination [CGD 81–101, 52 FR 7780, Mar. 12, 1987] of waivers. (a) The Coast Guard considers allow- § 153.12 IMO Certificates for United ing the use of an alternative in place of States Ships. a requirement in this part if— Either a classification society au- (1) The person wishing to use the al- thorized under 46 CFR part 8, or the Of- ternative sends a written application ficer in Charge, Marine Inspection,

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issues a United States ship an IMO Cer- material or NLS if the ship’s Adminis- tificate endorsed to allow the carriage tration is signatory to MARPOL 73/78; of a hazardous material or NLS cargo (3) The ship meets the requirements in table 1 of this part if the following of this part applying to United States requirements are met: ships and § 30.01–5(e) of this chapter if (a) The ship’s owner must make a re- the ship’s Administration is not signa- quest to the OCMI for the IMO Certifi- tory to MARPOL 73/78; and cate. (4) The ship meets any additional de- (b) The ship must meet this part. sign and equipment requirements spec- (c) Self-propelled ships contracted for ified by the Commandant (CG–522). after November 1, 1973 but built before December 28, 1977 must meet require- [CGD 81–101, 52 FR 7780, Mar. 12, 1987] ments in this part that apply to a self- § 153.16 Requirements for foreign flag propelled ship built on December 28, vessel permits. 1977. (d) Non-self-propelled ships con- To have its Certificate of Compliance tracted for after November 1, 1973 but endorsed to carry a cargo listed in built before July 1, 1983 must meet the Table 1, a foreign flag vessel must: requirements in this part applying to (a) Have an IMO Certificate, if the non-self-propelled ships built on July 1, flag administration issues IMO Certifi- 1983. cates, endorsed with the name of the cargo and meet any specific require- [CGD 81–101, 52 FR 7780, Mar. 12, 1987, as ments in this subpart that the Com- amended by CGD 95–010, 62 FR 67537, Dec. 24, mandant (CG–522) may prescribe; or 1997] (b) Meet the requirements of this § 153.15 Conditions under which the subpart and § 30.01–5(e) of this chapter. Coast Guard issues a Certificate of [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as Inspection or Certificate of Compli- amended by CGD 82–063b, 48 FR 4781, Feb. 3, ance. 1983; CGD 81–052, 50 FR 8733, Mar. 5, 1985; CGD (a) The Coast Guard issues the en- 81–101, 52 FR 7780, Mar. 12, 1987; CGD 95–027, dorsed Certificate of Inspection re- 61 FR 26008, May 23, 1996] quired under § 153.900 for a United States ship to carry a hazardous mate- § 153.30 Special area endorsement. rial or NLS listed in Table 1 if— The Coast Guard endorses the Certifi- (1) The person wishing the Certificate cate of Inspection of a United States of Inspection applies following the pro- ship allowing it to operate in special cedures under § 153.8; and areas if the ship owner— (2) The ship meets the design and (a) Requests the endorsement fol- equipment requirements of this part lowing the procedures in § 153.8; and— (b) Shows that the ship meets the de- (i) Subchapter D of this chapter if the sign and equipment requirements ap- hazardous material or NLS is flam- plying to ships operating in special mable or combustible; or areas contained in Regulations 5, 5A, (ii) Either Subchapter D or I of this and 8 of Annex II and the Standards for chapter, at the option of the ship Procedures and Arrangements. owner, if the hazardous material or NLS is non-flammable or non-combus- [CGD 81–101, 52 FR 7780, Mar. 12, 1987] tible. § 153.40 Determination of materials (b) The Coast Guard issues the en- that are hazardous. dorsed Certificate of Compliance required under § 153.900 for a foreign ship Under the authority delegated by the to carry a hazardous material or NLS Secretary of Transportation in 49 CFR listed in Table 1 if— 1.46(t) to carry out the functions under (1) The person wishing the Certificate 49 U.S.C. 1803, the Coast Guard has of Compliance follows the procedures found the following materials to be under § 153.9; hazardous when transported in bulk: (2) The ship has an IMO Certificate (a) Materials listed in Table 30.25–1 of issued by its Administration and en- this chapter. dorsed with the name of the hazardous (b) Materials listed in Table 151.05.

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(c) Materials listed in Table 1. 1 (3) 5 m (approx. 16.5 ft) if the vessel (d) Materials listed in Table 4 of Part length is more than 125 meters (approx. 154. 410 ft). (e) Materials that are NLSs under (b) Fixed port lights, wheelhouse MARPOL Annex II. doors, and windows need not meet the (f) Liquids, liquefied gases, and com- location requirements specified in pressed gases, that are— paragraph (a) of this section if they do (1) Listed in 49 CFR 172.101; not leak when tested with a fire hose (2) Listed in 49 CFR 172.102; or at 207 kPa gauge (30 psig). (3) Listed or within any of the defini- [CGD 81–078, 50 FR 21173, May 22, 1985] tions in subparts C through O of 49 CFR part 173. § 153.208 Ballast equipment. (g) Those liquid, liquefied gas, and (a) Except for the arrangement de- compressed gas materials designated as scribed in paragraph (b) of this section hazardous in the permissions granted no piping that serves a dedicated bal- under § 153.900(c). 2 last tank that is adjacent to a cargo [CGD 81–101, 52 FR 7780, Mar. 12, 1987] tank may enter an engine room or accommodation space. Subpart B—Design and Equipment (b) Piping used only to fill a dedicated ballast tank adjacent to a cargo GENERAL VESSEL REQUIREMENTS tank may enter an engine room or accommodation space if the piping has a § 153.190 Stability requirements. valve or valving arrangement: Each vessel must meet the applicable (1) Within the part of the tankship requirements in Subchapter S of this where a containment system may be chapter. located under § 153.234; [CGD 79–023, 48 FR 51009, Nov. 4, 1983. Redes- (2) That allows liquid to flow only to- ignated by CGD 81–101, 52 FR 7780, Mar. 12, wards that ballast tank (such as a 1987] check valve); and (3) That enables a person to shut off § 153.201 Openings to accommodation, the fill line from the weatherdeck service or control spaces. (such as a stop valve). (a) Except as allowed in paragraph (b) (c) Except as prescribed in paragraph of this section, entrances, ventilation (d) of this section, pumps, piping, vent intakes and exhausts, and other open- lines, overflow tubes and sounding ings to accommodation, service, or tubes serving dedicated ballast tanks control spaces must be located aft of must not be located within a cargo the house bulkhead facing the cargo containment system. area a distance at least equal to the (d) Each vent line, overflow tube and following: sounding tube that serves a dedicated (1) 3 m (approx. 10 ft) if the vessel ballast tank and that is located within length is less than 75 meters (approx. a cargo containment system must meet 246 ft). § 32.60–10(e)(2) of this chapter. (2) L/25 if the vessel length is between 75 and 125 meters (approx. 246 ft and 410 [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as ft). amended by CGD 78–128, 47 FR 21207, May 17, 1982]

1 Those hazardous material cargoes des- § 153.209 Bilge pumping systems. ignated Category A, B, C, or D in Table 1 are also Noxious Liquid Substances under Annex Bilge pumping systems for cargo II and the Act to Prevent Pollution from pumprooms, slop tanks, and void Ships, 33 U.S.C. 1901 et seq. spaces separated from cargo tanks by 2 The Coast Guard continues to propose in only a single bulkhead must be en- the FEDERAL REGISTER any addition of these tirely within the locations allowed con- designated hazardous materials to one of the tables referred to in paragraphs (a) through tainment systems in § 153.234. (d).

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§ 153.214 Personnel emergency and (c), (d), and (e) with the legend safety equipment. ‘‘SAFETY EQUIPMENT.’’ Each self-propelled ship must have [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as the following: amended by CGD 78–128, 47 FR 21207, May 17, (a) Two stretchers or wire baskets 1982; CGD 81–101, 52 FR 7781, Mar. 12, 1987] complete with equipment for lifting an § 153.216 Shower and eyewash foun- injured person from a pumproom or a tains. cargo tank. (b) In addition to any similar equip- (a) Each non-self-propelled ship must ment required by Subchapter D of this have a fixed or portable shower and chapter, three each of the following: eyewash fountain that operates during cargo transfer and meets paragraph (c) (1) A 30 minute self-contained breath- of this section. ing apparatus of the pressure demand (b) Each self-propelled ship must type, approved by the Mining Safety have a shower and eyewash fountain and Health Administration (formerly that operates at all times and meets the Mining Enforcement and Safety paragraph (c) of this section. Administration) and the National In- (c) The shower and eyewash foun- stitute for Occupational Safety and tains required by paragraphs (a) and (b) Health, or the tankship’s flag adminis- of this section must— tration with five refill tanks or car- (1) Operate in any ambient tempera- tridges of 30 minutes capacity each. ture; (2) A set of overalls or large apron, (2) Dispense water at a temperature boots, long sleeved gloves, and goggles, between 0 °C and 40 °C (approx. 32 °F each made of materials resistant to the and 104 °F); cargoes in Table 1 that are endorsed on (3) Be located on the weatherdeck; the Certificate of Inspection or Certifi- and cate of Compliance. (4) Be marked ‘‘EMERGENCY SHOW- (3) A steel-cored lifeline with har- ER’’ as described in § 153.955 (c), (d), and ness. (e), so that the marking is visible from (4) An explosion-proof lamp. work areas in the part of the deck (c) First aid equipment. where the cargo containment systems are located. [GCD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 77–222, 43 FR 57256, Dec. 7, [CGD 81–101, 52 FR 7781, Mar. 12, 1987] 1978; CGD 78–128, 47 FR 21207, May 17, 1982; CGD 81–052, 50 FR 8733, Mar. 5, 1985; CGD 81– § 153.217 Access to enclosed spaces 101, 52 FR 7781, Mar. 12, 1987] and dedicated ballast tanks. An access opening to an enclosed § 153.215 Safety equipment lockers. space or a dedicated ballast tank must Each self-propelled ship must have meet the requirements for a cargo tank the following: access in § 153.254 (b), (c), and (d) if: (a) Each tankship must have at least (a) The enclosed space or dedicated two safety equipment lockers. ballast tank is located within the cargo (b) One safety equipment locker must area of the vessel; or be adjacent to the emergency shutdown (b) A part of a cargo containment station required by § 153.296(b). This system lies within the enclosed space locker must contain one set of the or dedicated ballast tank. equipment required by § 153.214(a) and [CGD 78–128, 47 FR 21207, May 17, 1982] two sets of that required by § 153.214(b). (c) The second safety equipment § 153.219 Access to double bottom locker must be adjacent to the second tanks serving as dedicated ballast emergency shutdown station required tanks. by § 153.296. This locker must contain (a) Except as prescribed in paragraph the remaining equipment required by (b) of this section, access openings to § 153.214 (a) and (b). double bottom tanks serving as dedi- (d) Each safety equipment locker cated ballast tanks must not be located must be marked as described in § 153.955 within a cargo containment system.

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(b) Each access opening to a double Vertical extent from the baseline up- bottom tank that is a dedicated ballast ward. tank and that is located within a cargo [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as containment system must be: amended by CGD 79–023, 48 FR 51009, Nov. 4, (1) Enclosed in an access trunk ex- 1983; CGD 81–101, 52 FR 7781, Mar. 12, 1987] tending to the weatherdeck; (2) Separated from the cargo contain- § 153.232 Type III system. ment system by two manhole cov- A type III containment system must erings; or be in either a type I, II, or III hull. The (3) Approved by the Commandant requirements for type I, II, and III (CG–522). hulls are in subpart F of part 172 of this chapter. [CGD 78–128, 47 FR 21207, May 17, 1982, as [CGD 79–023, 48 FR 51009, Nov. 4, 1983] amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983] § 153.233 Separation of tanks from machinery, service and other spaces. CARGO CONTAINMENT SYSTEMS (a) To prevent leakage through a sin- § 153.230 Type I system. gle weld failure, the following spaces must be separated from a cargo by two A type I containment system must walls, two bulkheads, or a bulkhead meet the following requirements: and a deck not meeting in a cruciform (a) The vessel must meet the require- joint: ments in subpart F of part 172 of this (1) Machinery spaces. chapter for a type I hull. (2) Service spaces. (b) Except as described in § 153.235: (3) Accommodation spaces. (1) It may be no closer to the tank- (4) Spaces for storing potable domes- ship’s shell than 76 cm (approx. 29.9 tic, or feed water. in.); and (5) Spaces for storing edibles. (2) It may not be located in any part (b) Some examples of arrangements of the tankship subject to the damage that may separate cargo from the spaces listed in paragraph (a) of this described in Table 172.135 of this chap- section are the following: ter for: (1) Dedicated ballast tanks. (i) COLLISION PENETRATION, Trans- (2) Cargo pumprooms. verse extent; and (3) Ballast pumprooms. (ii) GROUNDING PENETRATION, (4) Tanks not carrying a cargo listed Vertical extents from the baseline up- in this part. 3 ward. (5) A cofferdam aft of the cargo containment systems and whose forward [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as bulkhead is forward of any joint com- amended by CGD 79–023, 48 FR 51009, Nov. 4, 1983] mon to an accommodations space and the deck. § 153.231 Type II system. (6) Double walled piping or a piping tunnel. A type II containment system must meet the following requirements: § 153.234 Fore and aft location. (a) The vessel must meet the require- Except as allowed in § 153.7, each ship ments in subpart F of part 172 of this must meet the following: chapter for a type I or II hull. (a) Each cargo containment system (b) Except as allowed in §§ 153.7 and and any compartments within which a 153.235— containment system is located must be (1) It may be no closer to the tank- forward of a tankship’s accommodation ship’s shell than 76 cm (approx. 29.9 spaces. in.); and (b) Except as described in § 153.235, (2) It may not be located in any part each cargo containment system must of the tankship subject to the damage described in Table 172.135 of this chap- 3 See also §§ 32.56–5 and 32.60–10 of this chapter for limitations on the stowage of combus- ter for GROUNDING PENETRATION, tible liquids adjacent to ignition sources.

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be located at least 0.05L aft of the for- (e) Stainless steel or steel covered ward perpendicular, but in no case for- with a suitable protective lining or ward of a collision bulkhead. coating. (See § 153.266.) [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 81–101, 52 FR 7781, Mar. 12, amended by CGD 88–100, 54 FR 40041, Sept. 29, 1987] 1989]

§ 153.235 Exceptions to cargo piping § 153.239 Use of cast iron. location restrictions. (a) Cast iron used in a cargo contain- Cargo piping must not be located in ment system must meet the require- those areas from which a containment ments of § 56.60–10(b) of this chapter. system is excluded by §§ 153.230(b), (b) For purposes of this section, the 153.231(b), and 153.234(b) unless the term ‘‘lethal products’’ in § 56.60–10(b) cargo piping: means those cargoes that Table 1 ref- (a) Drains back to the cargo tank erences to § 153.525 or § 153.527. under any heel or trim resulting from the damage specified in § 172.135 of this [CGD 78–128, 47 FR 21207, May 17, 1982] chapter; and § 153.240 Insulation. (b) Enters the cargo tank above the liquid level for a full tank in any con- Cargo containment system insulation dition of heel or trim resulting from made necessary by the requirements of the damage specified in § 172.135 of this this part must meet the requirements chapter. in § 38.05–20 of this chapter. However, the vapor barrier required by § 38.05– [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as 20(b) is unnecessary if the insulation is: amended by CGD 79–023, 48 FR 51009, Nov. 4, (a) Protected from the weather, and 1983] attached to a containment system § 153.236 Prohibited materials. maintained at a temperature in excess of 46 °C (approx. 115 °F); or When one of the following paragraphs (b) In an atmosphere whose dewpoint of this section is referenced in Table 1, is less than the temperature of any sur- the materials listed in that paragraph face in contact with the insulation. may not be used in components that contact the cargo liquid or vapor: CARGO TANKS (a) Aluminum or aluminum alloys. (b) Copper or copper alloys. § 153.250 Double-bottom and deep (c) Zinc, galvanized steel or alloys tanks as cargo tanks. having more than 10 percent zinc by Except in those cases in which Com- weight. mandant (CG–522) specifically approves (d) Magnesium. another arrangement, such as a double- (e) Lead. bottom or deep tank as a cargo tank, (f) Silver or silver alloys. an integral cargo tank or the hold (g) Mercury. within which an independent cargo tank is located must extend to the § 153.238 Required materials. weatherdeck. When one of the following paragraphs of this section is referenced in Table 1, [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as only those materials listed in that amended by CGD 82–063b, 48 FR 4781, Feb. 3, 1983] paragraph may be used in components that contact the cargo liquid or vapor: § 153.251 Independent cargo tanks. (a) Aluminum, stainless steel, or All independent cargo tank must steel covered with a protective lining meet § 38.05–10 (a)(1), (b), (d), and (e)(1) or coating. (b) With cargo concentrations of 98 of this chapter. percent or greater, aluminum or stain- [CGD 78–128, 47 FR 21208, May 17, 1982] less steel. (c) With cargo concentrations of less § 153.252 Special requirement for an than 98 percent, 304L or 316 stainless independent cargo tank. steel. When Table 1 refers to this section, (d) Solid austenitic stainless steel. the cargo tank must be an independent

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tank that meets §§ 38.05–2(d) and 38.05– § 153.281 Piping to independent tanks. 4(g) of this chapter. (See also Piping for an independent cargo tank § 153.256(b)). must penetrate the tank only through [CGD 78–128, 47 FR 21208, May 17, 1982] that part of the tank or dome extending above the weatherdeck. § 153.254 Cargo tank access. (a) A cargo tank must have at least [CGD 78–128, 47 FR 21208, May 17, 1982] one covered manhole opening into the vapor space described in § 153.354. § 153.282 Cargo filling lines. (b) An access through a vertical The discharge point of a cargo tank cargo tank surface must be at least 60 filling line must be no higher above the cm by 80 cm (approx. 23.6 × 31.5 in.) and bottom of the cargo tank or sump than no more than 60 cm above a foothold 10 cm (approx. 4 in.) or the radius of grating, or surface on both sides of the the filling line, whichever is greater. access way. (c) An access through a horizontal § 153.283 Valving for cargo piping. cargo tank surface must be at least 60 (a) Except as described in this sec- cm by 60 cm (approx. 23.6 × 23.6 in.). (d) An access trunk must be no less tion, a cargo line must have a deck op- than 76 cm (approx. 29.9 in.) in diame- erable, manual stop valve: ter. (1) In each tank which the line serves; and § 153.256 Trunks, domes, and openings (2) At each cargo hose connection of cargo tanks. point. (a) The hatch of a cargo tank must: (b) The valve required by paragraph (1) Be at the highest point of the (a)(1) of this section may be in a cargo tank; and pumproom at the pumproom bulkhead (2) Open on or above the if the cargo tank the cargo line serves weatherdeck. is adjacent to the pumproom. (b) To be endorsed to carry a cargo (c) The valve required by paragraph requiring an independent cargo tank, a (a)(1) of this section may be on the tank must have: weatherdeck if: (1) A trunk or dome at the uppermost (1) The weatherdeck is the top of the part of the tank, extending above the tank; weatherdeck; (2) Its hatch at the top of the trunk (2) The line goes through the or dome; and weatherdeck into the tank; and (3) No openings below the (3) The valve is at the point where weatherdeck. the line penetrates the weatherdeck. (d) The valve required by paragraph § 153.266 Tank linings. (a)(1) of this section may be outside the A tank lining must be: tank if: (a) At least as elastic as the tank ma- (1) The tank is an independent tank; terial; and and (b) Applied or attached to the tank as (2) The valve is at the point where recommended by the lining manufac- the line penetrates the tank. turer. (e) The discharge line of an intank cargo pump need not have the valve re- PIPING SYSTEMS AND CARGO HANDLING quired by paragraph (a)(1) of this sec- EQUIPMENT tion. § 153.280 Piping system design. (f) If the cargo exerts a gravity head (a) Each cargo piping system must pressure on a valve required by this meet the standards of Part 56 and section, the valve must be a positive §§ 38.10–1(b), 38.10–1(e), and 38.10–10(a) of shutoff valve that meets § 56.50–60(d) of this chapter. this chapter. (b) Piping carrying cargo or cargo [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as residue may not enter any machinery amended by CGD 78–128, 47 FR 21208, May 17, space except a cargo pumproom. 1982]

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§ 153.284 Characteristics of required § 153.296 Emergency shutdown sta- quick closing valves. tions. A remotely actuated quick closing (a) Each tankship must have at least shutoff valve required by § 153.530(n) two emergency shutdown stations. must: (b) One emergency shutdown station (a) Be a positive shutoff valve; must be located forward of the deck- (b) Be of the fail-closed type that house, in the after part of the closes on loss of power; weatherdeck in which the cargo tanks (c) Be capable of local manual clos- are located. ing; (c) A second emergency shutdown (d) Close from the time of actuation station must be located so that one of in 30 seconds or less; and the two stations is accessible from any (e) Be equipped with a fusible ele- part of the weatherdeck if a break in a ment that melts at less than 104 °C (approx. 220 °F) and closes the valve. cargo piping system or hose causes spraying or leaking. [CGD 78–128, 47 FR 21208, May 17, 1982; 47 FR (d) Each emergency shutdown station 27293, June 24, 1982] must contain a single remote actuator § 153.285 Valving for cargo pump for all quick closing shutoff valves re- manifolds. quired by this part. (e) Each emergency shutdown station (a) When cargo lines serving different tanks enter a pumproom and connect must have the controls necessary to to the same pump: stop all cargo pumps on the tankship. (1) Each cargo line must have a stop (f) Any remote emergency actuator, valve within the line; such as that for a quick closing shut- (2) The valve must be before the off valve, a cargo pump, or a water cargo line joins the other lines or spray system, must be of a type that pump; and will not defeat the operation of other (3) The valve must be within the remote emergency actuators. The pumproom. emergency action must occur whether (b) The valve in paragraph (a) of this one or several actuators are operated. section is required in addition to any (g) Each emergency shutdown station valve required under § 153.283(b). must be marked as described in § 153.955 (c), (d), and (e) with the legend § 153.292 Separation of piping systems. ‘‘EMERGENCY SHUTDOWN STA- Cargo piping systems must be ar- TION’’ so that the legend is visible ranged so that operations necessary to from work areas in the part of the deck provide separate systems can be ac- where the cargo containment systems complished in a cargo handling space are located. or on the weatherdeck. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as [CGD 78–128, 47 FR 21208, May 17, 1982] amended by CGD 78–128, 47 FR 21208, May 17, 1982] § 153.294 Marking of piping systems. (a) Each cargo piping system must be § 153.297 Emergency actuators at the marked with the designation number of point of cargo control. the cargo tank it serves at each hose (a) The point from which cargo trans- connection, valve, and blind in the pip- fer is controlled must have the same ing system. The markings must be in actuators an emergency shutdown sta- characters at least 5 cm (approx. 2 in.) tion must have under § 153.296 and an high. actuator for any deck water spray sys- (b) Every hose connection of a cargo tems required by this part. piping system must be marked with (b) The point from which cargo trans- the cargo piping system’s working pressure required by § 38.10–10(a) of this fer is controlled may be one of the chapter. 4 emergency shutdown stations required under § 153.296 if it meets the requirements of that section. 4 See § 153.280 of the part.

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CARGO HANDLING SPACE VENTILATION vessel to supply air to the extremities of the space. § 153.310 Ventilation system type. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as A cargo handling space must have a amended by CGD 78–128, 47 FR 21208, May 17, permanent forced ventilation system of 1982] the exhaust type. § 153.316 Special cargo pumproom ven- § 153.312 Ventilation system standards. tilation rate. A cargo handling space ventilation When Table 1 refers to this section, system must meet the following: the cargo pumproom ventilation sys- (a) A ventilation system exhaust tem must change the air in the cargo duct must discharge no less than 10 m pumproom 45 times per hour and dis- (approx. 32.8 ft) from openings into or charge no less than 4 m (approx. 13.1 ft) ventilation intakes for, accommoda- above the deck. tion or service spaces. CARGO PUMPROOMS (b) A ventilation system must not re- cycle vapors from ventilation dis- § 153.330 Access. charges. (a) The access door to a cargo pump- (c) Except for the space served by the room must open on the weatheredeck. ventilation duct, a ventilation duct (b) The access way to a cargo pump- must not pass through a machinery room and its valving must allow pas- room, an accommodation space, or sage of a man wearing the breathing working spaces. apparatus required by § 153.214(b)(1). (d) A ventilation system must be op- (c) Each ladderway in a cargo pump- erable from outside the space it venti- room must be free from obstructions lates. by piping, framework, or other equip- (e) A ventilation system must be ment. sized to change the air in the venti- (d) Cargo pumproom ladders and plat- lated space at least 30 times per hour. forms must have guard railings. (f) A ventilation system must not (e) Each ladder to a cargo pump-room allow air to stagnate in any part of a must have an incline from the hori- ventilated space. zontal of less than 60°. (g) A ventilation system must be able to exhaust air from both above and § 153.332 Hoisting arrangement. below the deck plates of a ventilated (a) A cargo pumproom located below space. the weatherdeck must have a permanent hoisting arrangement with a lift- § 153.314 Ventilation of spaces not usu- ing capacity of 2500 N (approx. 562 lbs), ally occupied. operable from the weatherdeck, for the (a) Each tankship must have portable removal of an unconscious person. ventilation equipment that fits the (b) The cargo pumproom must have a mount required in paragraph (b)(1) of 60 cm by 60 cm (approx. 2 ft by 2 ft) this section. cross-sectional clearance through the (b) Each enclosed space within the hoistway. cargo area that does not have a permanent ventilation system meeting § 153.333 Cargo pump discharge pres- § 153.312 must have: sure gauge. (1) A mount for the portable mechan- Each cargo pump within a pump- ical ventilation equipment required by room must have a discharge pressure this section; and gauge outside the pumproom. (2) Either permanent ventilation ductwork connected to the mount and § 153.334 Bilge pumping systems. arranged to supply air to the extrem- (a) A cargo pumproom must have a ities of the space; or bilge pumping system. (3) An attachment for temporary (b) The bilge pumping system must ductwork at the mount with enough have: ductway in the ventilated space and (1) Complete remote operating con- temporary ductwork stowed aboard the trols outside the cargo pumproom; and

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(2) An alarm that operates when the (b) At least 15m (approx. 49.2 ft) from depth of liquid in the bilges exceeds 50 air intakes for, or openings into, ac- cm (approx. 19.7 in.). commodation and service spaces.

§ 153.336 Special cargo pump or pump- [CGD 78–128, 47 FR 21208, May 17, 1982; 47 FR room requirements. 27293, June 24, 1982] (a) When Table 1 refers to this sec- § 153.351 Location of 4m vent dis- tion: charges. (1) The cargo pump must be an Except as prescribed in § 153.353, a 4m intank cargo pump; venting system must discharge: (2) The cargo pumproom must be on (a) At least 4m (approx. 13.1 ft) above or above the weatherdeck; or the higher of: (3) The cargo pumproom must have (1) the weatherdeck; or the specific approval of the Com- (2) any walkway that is within a 4m mandant (CG–522). (approx. 13.1 ft) horizontal radius from (b) For a cargo pumproom described the vent discharge. in paragraph (a)(2) or (a)(3) the tank- (b) At least 10m (approx. 32.8 ft) from ship must: air intakes for, or openings into, ac- (1) Have a low pressure breathing commodation or service spaces. quality air supply system for use with the breathing apparatus in the pump- [CGD 78–128, 47 FR 21208, May 17, 1982] room; or § 153.352 B/3 and 4 m venting system (2) Meet any requirements specified outlets. by the Commandant (CG–522). (c) A low pressure air supply system A B/3 or 4 m venting system outlet described in paragraph (b)(1) of this must: section must: (a) Discharge vertically upwards; and (1) Run from fixed air bottles to the (b) Prevent precipitation from enter- pumproom; ing the vent system. (2) Have an air compressor to re- § 153.353 High velocity vents. charge the fixed air bottles; (3) have hose connections in the The discharge point of a B/3 or 4m pumproom suitable for use with the venting system must be located at breathing apparatus required in least 3m (approx. 10 ft) above the § 153.214(b)(1); and weatherdeck or walkway if: (4) have the air capacity to enable (a) The discharge is a vertical, two men to work in the pumproom for unimpeded jet; at least one hour each without using (b) The jet has a minimum exit veloc- the cartridges for the breathing appa- ity of 30 m/sec (approx. 98.4 ft/sec); and ratus required in § 153.214(b)(1). (c) The high velocity vent has been approved by Commandant (CG–522). [CGD 78–128, 47 FR 21208, May 17, 1982, as amended by CGD 82–063b, 48 FR 4781, Feb. 3, [CGD 78–128, 47 FR 21208, May 17, 1982, as 1983] amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983] CARGO VENTING SYSTEMS § 153.354 Venting system inlet. § 153.350 Location of B/3 vent dis- A venting system must terminate in charges. the vapor space above the cargo when Except as prescribed in § 153.353, a the tank is filled to a 2 percent ullage B/3 venting system must discharge: and the tankship has no heel or trim. (a) At the highest of the following points: § 153.355 PV venting systems. (1) 6m (approx. 19.7 ft) above the When Table 1 requires a PV venting weatherdeck. system, the cargo tank must have a PV (2) B/3 above the weatherdeck. valve in its vent line. The PV valve (3) 6m (approx. 19.7 ft) above a walk- must be located between the tank and way, if the walkway is within a 6m any connection to another tank’s vent (approx. 19.7 ft) horizontal radius from line (such as a vent riser common to the vent discharge. two or more tanks).

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§ 153.358 Venting system flow capacity. § 153.365 Liquid overpressurization protection. (a) The cross-sectional flow area of any vent system segment, including (a) Except as noted in paragraph (b) any PV or SR valve, must at no point of this section, a containment system be less than that of a pipe whose inside requiring closed or restricted gauging diameter is 6.4 cm (approx. 2.5 in.). must: (b) When Table 1 requires a closed or (1) Be designed to withstand the max- restricted gauging system, calculations imum pressure that develops during an must show that, under conditions in overfill of the densest cargo endorsed which a saturated cargo vapor is dis- for the containment system; or charged through the venting system at (2) Have an overflow control system the maximum anticipated loading rate, that meets § 153.408; or the pressure differential between the (3) Meet the requirements specified cargo tank vapor space and the atmos- by the Commandant (CG–522). phere does not exceed 28 kPa gauge (b) A containment system requiring (approx. 4 psig), or, for independent restricted gauging, except for those tanks, the maximum working pressure cargoes that reference §§ 153.525 or of the tank. 153.527, may be equipped with a spill valve that: § 153.360 Venting system restriction. (1) Meets ASTM F 1271 (incorporated A venting system must have no as- by reference, see § 153.4); and sembly that could reduce its cross-sec- (2) Limits the maximum pressure tional flow area or flow capacity to less during liquid overfill at a specified than that required in § 153.358. cargo loading rate to that which the containment system is able to with- § 153.361 Arrangements for removal of stand (see §§ 153.294(b) and 152.977(b)). valves from venting systems having [CGD 78–128, 47 FR 21208, May 17, 1982, as multiple relief valves. amended by CGD 82–063b, 48 FR 4782, Feb. 3, A venting system having multiple re- 1983; CGD 88–032, 56 FR 35827, July 29, 1991; lief valves may be arranged to allow USCG–2000–7790, 65 FR 58463, Sept. 29, 2000] the removal of a valve (for repair, as an § 153.368 Pressure-vacuum valves. example) provided the venting system: (a) Has valves that are interlocked, (a) The pressure side of a required so that the removal of a valve does not pressure-vacuum relief valve must reduce the venting system relieving ca- begin to open only at a pressure ex- pacity below the minimum relieving ceeding 3.5 kPa gauge (approx. 0.5 psig). capacity required by § 153.358; and (b) A pressure-vacuum relief valve (b) Is arranged so that cargo vapor must meet the requirements of Subpart will not escape through the opening 162.017 of this chapter. left after a valve has been removed. § 153.370 Minimum relief valve setting [CGD 78–128, 47 FR 21208, May 17, 1982; 47 FR for ambient temperature cargo 27293, June 24, 1982] tanks. The relief valve setting for a contain- § 153.362 Venting system drain. ment system that carries a cargo at Unless a cargo vent system at every ambient temperature must at least point is level or slopes back to the equal the cargo’s vapor pressure at 46 cargo tank under all conditions of heel °C (approx. 115 °F). and trim allowed under § 153.806, the [CGD 81–078, 50 FR 21173, May 22, 1985] cargo vent system must have a drain valve at each low point (trap) in the § 153.371 Minimum relief valve setting vent line. for refrigerated cargo tanks. The relief valve setting for a contain- § 153.364 Venting system supports. ment system that carries a refrigerated Supports for a vent system must cargo must at least equal the lesser of: meet § 38.10–10(c) of this chapter. (a) That in § 153.370; or

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(b) 110 percent of the cargo’s vapor gauge, the containment system must pressure at the steady state tempera- have: ture obtained by a full tank of cargo (a) A closed gauging system; or with the refrigeration system oper- (b) A system that has: ating under ambient conditions de- (1) A restricted gauge (e.g., a sound- scribed within the definition of a re- ing tube) with an orifice diameter not frigerated tank in § 153.2. exceeding 20 cm (approx. 7.8 in.); (2) A permanently attached gauge § 153.372 Gauges and vapor return for cargo vapor pressures exceeding cover that is vapor tight when in place; 100 kPa (approx. 14.7 psia). and (3) A venting system that has either: When table 1 references this section, (i) Lock open PV valves; or the containment system must have a: (a) Tank pressure gauge at the point (ii) Valved bypasses around the PV where cargo flow is controlled during valves. transfer; and § 153.407 Special requirements for (b) Vapor return connection. sounding tube gauges. [CGD 73–96, 42 FR 49027, Sept. 26, 1977; 42 FR (a) A sounding tube installed as a re- 57126, Nov. 1, 1977, as amended by CGD 81–078, stricted gauge must extend to within 50 FR 21173, May 22, 1985] one meter (approx. 39.4 in.) of the bot- CARGO GAUGING SYSTEMS tom of the tank. (b) A sounding tube must not be in- § 153.400 General requirements for stalled on a tank whose relief valve gauges. setting exceeds 28 kPa (approx. 4 psig) (a) Columnar gauge glasses must not unless it is specifically permitted by be installed on a cargo containment the Commandant (CG–522). system. (c) A sounding tube must have no (b) Flat sight glasses must meet perforations in the tube wall. § 38.10–20(h) of this chapter. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, § 153.404 Standards for containment 1983] systems having required closed gauges. § 153.408 Tank overflow control. When Table 1 requires a cargo’s con- (a) When table 1 references this sec- tainment system to have a closed tion, a cargo containment system must gauge, the containment system must have a cargo high level alarm meeting have the following: § 153.409 and one of the following addi- (a) A permanently installed closed tional systems: gauging system. (1) A second high level (cargo over- (b) A vapor return connection. flow) alarm. (c) The high level alarm described in (2) A system that automatically § 153.409. stops cargo flow to the tank (auto- (d) Either a closed cargo sampling matic shutdown system). system or a cargo sampling arrangement allowing the retrieval of a sample (b) The high level alarm and the through an orifice not exceeding: cargo overflow alarm or automatic (1) 0.635 cm (approx. 0.25 in.) diameter shutdown system must: when the cargo’s vapor pressure is 28 (1) Be independent of one-another; kPa gauge (approx. 4 psig) or less; or and (2) 0.140 cm (approx. 0.055 in.) diame- (2) Operate on loss of power. ter when the cargo’s vapor pressure ex- (c) The cargo overflow alarm or the ceeds 28 kPa (approx. 4 psig). automatic shutdown system must operate early enough to: § 153.406 Standards for containment (1) Stop the loading operation before systems having required restricted the cargo tank overflows; and gauges. (2) Avoid surge pressures that exceed When Table 1 requires a cargo’s con- the working pressure specified in tainment system to have a restricted § 153.294(b).

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(d) A tank overflow must be identi- (b) Have valving that enables the sys- fied with the legend ‘‘TANK OVER- tem to be separated from all other FLOW ALARM’’ in lettering as speci- cooling and heating systems; and fied for the warning sign in § 153.955. (c) Allow manual regulation of the (e) A tank overflow alarm must be system’s heat transfer rate. audible and visible in that part of the [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as deck where the containment systems amended by CGD 78–128, 47 FR 21209, May 17, are located and at the point where 1982; CGD 81–078, 50 FR 21174, May 22, 1985] cargo loading is controlled on the tankship. § 153.432 Cooling systems. (f) The automatic shutdown system (a) Each cargo cooling system must or tank overflow alarm must be able to have an equivalent standby unit that is be checked at the tank for proper oper- installed and that can be placed in op- ation (for example, by electrically sim- eration immediately after failure of ulating an overfill at the tank gauge the primary cooling system. connection). (b) Each tankship that has a cargo (g) In this section, ‘‘independent’’ as tank with a required cooling system applied to two systems means that one must have a manual that contains: system will operate with a failure of (1) A piping diagram for the cooling any part of the other system except system; and high level power sources and electrical (2) Instructions for changing over to feeder panels. Conduit need not be the standby system described in para- independent; the control wiring for sev- graph (a) of this section. eral independent systems may be carried in a single conduit. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78–128, 47 FR 21209, May 17, [CGD 81–078, 50 FR 21173, May 22, 1985] 1982]

§ 153.409 High level alarms. § 153.434 Heat transfer coils within a tank. When Table 1 refers to this section or requires a cargo to have a closed gaug- When a cargo tank contains any ing system, the cargo’s containment quantity of cargo, a cargo cooling or system must have a high level alarm: heating system having coils within the (a) That gives an audible and visual tank must keep the heat transfer fluid alarm before the tank fills to 97 per- at a pressure greater than the pressure cent of its capacity; exerted on the heating or cooling sys- (b) That can be seen and heard where tem by the cargo. cargo transfer is controlled and on the [CGD 78–128, 47 FR 21209, May 17, 1982] open deck; (c) Whose operation can be checked § 153.436 Heat transfer fluids: compat- prior to each loading; and ibility with cargo. (d) That must be marked as described A heat transfer fluid separated from in § 153.408(c)(6) with the legend ‘‘HIGH the cargo by only one wall (for exam- LEVEL ALARM.’’ ple, the heat transfer fluid in a coil within a tank) must be compatible [CGD 78–128, 47 FR 21209, May 17, 1982; 47 FR with the cargo under the standards pre- 27293, June 24, 1982] scribed for compatibility between two CARGO TEMPERATURE CONTROL SYSTEMS cargoes in Part 150 of this chapter. [CGD 81–078, 50 FR 21174, May 22, 1985] § 153.430 Heat transfer systems; general. § 153.438 Cargo pressure or tempera- Each cargo cooling system required ture alarms required. by this part and each cargo heating (a) Each refrigerated tank must have: system must: (1) An alarm that operates when the (a) Meet the standards of Sub- cargo’s pressure exceeds the vapor chapters F (Marine Engineering) and J pressure described in § 153.371(b); or (Electrical Engineering) of this chap- (2) An alarm that operates when the ter; cargo’s temperature exceeds the steady

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state temperature described in through the containment system’s re- § 153.371(b). stricted gauging system. (b) The alarm must give an audible [CGD 78–128, 47 FR 21209, May 17, 1982, as and visual signal on the bridge and at amended by CGD 81–101, 52 FR 7781, Mar. 12, the cargo control station. 1987; CGD 81–101, 53 FR 28974, Aug. 1, 1988 and (c) The cargo pressure or tempera- 54 FR 12629, Mar. 28, 1989] ture alarm must be independent of other cargo pressure or temperature SPECIAL REQUIREMENTS FOR sensing arrangements. FLAMMABLE OR COMBUSTIBLE CARGOES

§ 153.440 Cargo temperature sensors. § 153.460 Fire protection systems. (a) Except as prescribed in paragraph Each self-propelled ship and each (c) of this section, when Table 1 refers manned non-self-propelled ship must to this section, the containment sys- meet the following: tem must meet the following require- (a) With the exception of the vent ments: riser, each part of a cargo containment (1) A heated or refrigerated cargo system exposed on the weatherdeck tank must have a remote reading ther- must be covered by the fire protection mometer sensing the temperature of system listed beside the cargo in Table the cargo at the bottom of the tank. 1 and described in the footnotes to (2) A refrigerated tank must have a Table 1. remote reading second thermometer (b) The Commandant (CG–522) ap- near the top of the tank and below the proves the substitution of a dry chem- maximum liquid level allowed by ical (D) type fire protection system for § 153.981. an A or B type on a case by case basis. (3) Unless waived under § 153.491(a), a (c) A fire protection system required cargo tank endorsed to carry a Cat- by this part must meet part 34 of this egory A, B, or C NLS cargo must have chapter or be specifically approved by a thermometer whose temperature the Commandant (CG–522). reading is no greater than the tempera- [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as ture of the cargo at a level above the amended by CGD 82–063b, 48 FR 4782, Feb. 3, tank bottom at least one-eighth but no 1983; CGD 81–101, 52 FR 7781, Mar. 12, 1987] more than one-half the height of the tank if the cargo is— § 153.461 Electrical bonding of inde- (i) A Category A NLS or a Category B pendent tanks. NLS having a viscosity of at least 25 An independent metallic cargo tank mPa.s at 20 °C; that carries a flammable or combus- (ii) A Category C NLS having a vis- tible cargo must be electrically bonded cosity of at least 60 mPa.s at 20 °C; or to the tankship’s hull. (iii) A Category A, B, or C NLS that has a melting point greater than 0 °C. § 153.462 Static discharges from inert gas systems. (b) A readout for each remote thermometer required by this section must An inert gas system on a tank that be at the point where cargo transfer is carries a flammable or combustible controlled. cargo must not create static arcing as (c) A portable thermometer may be the inert gas is injected into the tank. substituted for the equipment required in paragraphs (a) and (b) of this section § 153.463 Vent system discharges. if— The discharge of a venting system (1) Table 1 allows open gauging with must be at least 10 m (approx. 32.8 ft) the cargo; or from an ignition source if: (2) Table 1 allows restricted gauging (a) The cargo tank is endorsed to with the cargo, and the portable ther- carry a flammable or combustible mometer is designed to be used cargo; and (b) Table 1 requires the cargo to have a PV venting system.

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§ 153.465 Flammable vapor detector. (2) Where the discharge from the outlet is not drawn into the ship’s sea- (a) A tankship that carries a flammable cargo must have two vapor de- water intakes. tectors that meet § 35.30–15(b) of this (c) Location of dual NLS residue dis- chapter. charge outlets. If the value of 6.45 for K (b) At least one of the vapor detec- is used in § 153.1126(b)(2), the NLS res- tors in paragraph (a) of this section idue discharge system must have two must be portable. outlets located on opposite sides of the ship. § 153.466 Electrical equipment. [CGD 81–101, 52 FR 7781, Mar. 12, 1987, as A tankship carrying a flammable or amended by CGD 81–101, 53 FR 28974, Aug. 1, combustible cargo under this part must 1988 and 54 FR 12629, Mar. 28, 1989; CGD 95– meet subchapter J of this chapter. 028, 62 FR 51209, Sept. 30, 1997]

DESIGN AND EQUIPMENT FOR POLLUTION § 153.480 Stripping quantity for Cat- CONTROL egory B and C NLS tanks on ships built after June 30, 1986: Categories SOURCE: Sections 153.470 through 153.491 ap- B and C. pear at CGD 81–101, 52 FR 7781, Mar. 12, 1987, Unless waived under § 153.491, Cat- unless otherwise noted. egory B and C NLS cargo tanks on each ship built after June 30, 1986 must have § 153.470 System for discharge of NLS residue to the sea: Categories A, B, stripping quantities determined under C, and D. § 153.1604 that are less than— (a) 0.15 m3 if Category B; and Unless waived under § 153.491, each 3 ship that discharges Category A, B, or (b) 0.35 m if Category C. C NLS residue, or Category D NLS res- 1 § 153.481 Stripping quantities and in- idue not diluted to ⁄10th of its original terim standards for Category B NLS concentration, into the sea under tanks on ships built before July 1, §§ 153.1126 and 153.1128 must have an 1986: Category B. NLS residue discharge system meeting the following: Unless waived under § 153.483 or (a) Minimum diameter of an NLS res- § 153.491, each Category B NLS cargo idue discharge outlet. The outlet of each tank on ships built before July 1, 1986 NLS residue discharge system must must meet the following: have a diameter at least as great as (a) Unless the tank meets the interim that given by the following formula: standard provided by paragraph (b) of this section and is prewashed in ac- φ (Qd )(cos ine ) cordance with § 153.1118, the tank must D = have a stripping quantity determined 5L under § 153.1604 that is less than 0.35m 3. where: (b) Before October 3, 1994, the tank D=Minimum diameter of the discharge out- may have a total NLS residue deter- let in meters. mined under § 153.1608 that is less than Qd=Maximum rate in cubic meters per hour 1.0 m3 or 1⁄3000th of the tank’s capacity at which the ship operator wishes to dis- and an NLS residue discharge system charge slops (note: Qd affects the discharge rate allowed under § 153.1126(b)(2)). meeting the following: L=Distance from the forward perpendicular (1) The system must be capable of to the discharge outlet in meters. discharging at a rate equal to or less j=The acute angle between a perpendicular than Q in the following formula: to the shell plating at the discharge location and the direction of the average veloc- Q=K U1.4 L1.6×10¥5 m3/hr ity of the discharged liquid. where: (b) Location of an NLS residue dis- K=4.3, except K=6.45 if the discharge is equal- charge outlet. Each NLS residue dis- ly distributed between two NLS residue charge outlet must be located— discharge outlets on opposite sides of the (1) At the turn of the bilge beneath ship (see §§ 153.470(c) and 153.1126(b)). the cargo area; and L=ship’s length in meters.

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U=for a ship that is self-propelled, the min- stripping quantity determined under imum speed in knots specified in the ap- 153.1604 that is less than 0.95 m3. proved Procedures and Arrangements Man- (b) Before October 3, 1994, the tank ual for discharging Category B NLS res- may have a total NLS residue deter- idue, but at least 7; U=for a ship that is not self-propelled, the mined under § 153.1608 that is less than 3 minimum speed in knots specified in the 3.0 m or 1/1000th of the tank’s capac- approved Procedures and Arrangements ity. Manual for discharging Category B NLS residue, but at least 4. § 153.483 Restricted voyage waiver for Category B and C NLS tanks on (2) The system must have equipment ships built before July 1, 1986: Cat- capable of automatically recording— egory B and C. (i) The time of day that discharge of At its discretion the Coast Guard NLS residue through the residue dis- waives §§ 153.481 and 153.482 under this charge system starts and ends; and section and allows a ship to carry Cat- (ii) The dates on which discharge be- egory B and C NLS cargoes between gins and ends unless the equipment al- ports or terminals in one or more coun- lows a person to enter these dates on tries signatory to MARPOL 73/78 if the the record manually. ship’s owner requests a waiver fol- (3) Each system that has the capacity lowing the procedures in § 153.10 and in- to exceed Q calculated in paragraph cludes— (b)(1) of this section must have equip- (a) A written pledge to— ment that— (1) Limit the loading and discharge of (i) Records the NLS residue flow Category B and C NLS cargoes in a for- through the system; and eign port to those ports and terminals (ii) Is sufficiently accurate that its in countries signatory to MARPOL 73/ recorded values averaged over any 30 78 and listed in accordance with para- second period differ no more than 15% graph (b) of this section; and from the actual flow averaged over the (2) Prewash the cargo tank as re- same 30 second period. quired under § 153.1118 after each Cat- (4) Each system that has the capacity egory B or C NLS is unloaded unless to exceed Q calculated under paragraph the prewash is allowed to be omitted (b)(1) of this section and does not auto- under § 153.1114; matically control the flow rate must (b) A list of— have— (1) All foreign ports or terminals at (i) Manual controls that enable the which the ship is expected to load or flow to be adjusted to the value of Q discharge Category B or C NLS cargo, calculated in paragraph (b)(1) of this and section and that must be moved (2) All foreign ports or terminals at through at least 25% of their total which the ship is expected to discharge range of movement for the discharge Category B or C NLS residue from the rate to change from 0.5Q to 1.5Q; and tank; (ii) A flow rate meter located where (c) An estimate of the quantity of the flow is manually controlled. NLS residue to be discharged to each [CGD 81–101, 52 FR 7781, Mar. 12, 1987, as foreign port or terminal listed under amended by CGD 81–101, 53 FR 28974, Aug. 1, paragraph (b)(2) of this section; 1988 and 54 FR 12629, Mar. 28, 1989] (d) Written statements from the owners of adequate reception facilities in § 153.482 Stripping quantities and in- the ports and terminals listed in ac- terim standards for Category C NLS cordance with paragraph (b)(2) of this tanks on ships built before July 1, section who have agreed to take NLS 1986: Category C. residue from the ship, showing the Unless waived under § 153.483 or amount of NLS residue each agrees to § 153.491, each Category C NLS cargo take; and tank on ships built before July 1, 1986 (e) A written attestation from the must meet the following: person in charge of each port or ter- (a) Unless the tank meets the interim minal listed in accordance with para- standard provided by paragraph (b) of graph (b)(1) of this section that the ad- this section, the tank must have a ministration has determined the port

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or terminal to have adequate reception § 153.486 Design and equipment for re- facilities for the NLS residue. moving NLS residue by ventilation: Categories A, B, C, and D. NOTE TO § 153.483: Certificates of Inspection and any IMO Certificates issued to ships on (a) If NLS residue is to be removed restricted voyage waivers indicate that while from a cargo tank by ventilation, in the ship carries an NLS cargo or NLS res- addition to the equipment required idue, it is limited to voyages between the under paragraph (b) of this section the ports or terminals listed on the certificate. ship must have— [CGD 81–101, 52 FR 7781, Mar. 12, 1987, as (1) Openings in the tank deck near amended by CGD 81–101, 53 FR 28975, Aug. 1, the sump or suction point; 1988 and 54 FR 12629, Mar. 28, 1989] (2) If the openings required by paragraph (a)(1) of this section are insuffi- § 153.484 Prewash equipment. cient, an access opening for visually Unless the ship operator shows that determining whether liquid remains in the prewash equipment specified in this the sump area of the cargo tank after section will be available at discharge ventilation or some other means for or prewash facilities or the equipment making this determination; and is waived under § 153.491, to have its (3) An approved Procedures and Ar- Certificate of Inspection or Certificate rangements Manual with instructions of Compliance endorsed to carry a Cat- that meet § 153.490(b)(3). egory A NLS or a Category B or C NLS (b) Unless the ship operator shows requiring viscosity or melting point in- that the ventilation equipment specified in this paragraph will be available formation under § 153.908 (a) and (b), a from shore when needed, if NLS residue ship must have the following: is to be removed from a cargo tank by (a) For the tanks that carry the NLS, ventilation, in addition to the equip- a tank washing system capable of ment required under paragraph (a) of washing all interior tank surfaces ex- this section the ship must have— cept those shielded from the washing (1) Portable forced air ventilating system spray by ship’s structure, and equipment fitting the ventilation open- consisting of a wash water supply sys- ings required in paragraph (a) of this tem and— section and able to ventilate the ex- (1) A fixed tank washing machine in tremities of the tank to the extent pre- each tank; or scribed in Appendix C of the IMO (2) A portable tank washing machine Standards for Procedures and Arrange- and, if required by the Coast Guard, ments for the Discharge of Noxious Liquid equipment to move it during washing Substances, Resolution MEPC 18(22), and when storing. 1985; and (b) Piping, valving, and crossovers (2) A connector that allows a fan or needed to arrange the cargo piping so air supply to be connected to the hose that the wash water passes through the connections for the tank at the mani- cargo pump and cargo piping during fold. tank washing or discharge of tank NOTE: The Clean Air Act (42 U.S.C. 7401 et wash water. seq.) allows states to regulate emissions from (c) If the approved Procedures and tank ventilation. There may be other regula- Arrangements Manual specifies the hot tions, both local and Federal, that affect the water prewash required under 153.1108, use of tank ventilation for safety or environmental purposes. a means of supplying water to the tank washing machine under paragraph (a) § 153.488 Design and equipment for of this section at— tanks carrying high melting point (1) A temperature of at least 60 °C NLSs: Category B. (140 °F) when it leaves the washing ma- Unless waived under § 153.491, for a chine; and ship to have its Certificate of Inspec- (2) The flow rate needed for the wash- tion or Certificate of Compliance en- ing machine jets to meet paragraph (a) dorsed allowing a tank to carry a Cat- of this section. egory B NLS with a melting point of 15 °C or more, the cargo tank must have—

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(a) An arrangement enabling the dix C of the IMO Standards for Proce- cargo to be heated before cargo trans- dures and Arrangements for the Discharge fer, using heat supplied by the ship or of Noxious Liquid Substances, Resolution by another source; and MEPC 18(22), 1985. (b) Sides and bottom separate from (4) If tank cleaning agents are used, the ship’s side or bottom shell plating. quantities to use and instructions for using the cleaning agents. § 153.490 Cargo Record Book and Ap- proved Procedures and Arrange- (5) If the tank has the discharge re- ments Manual: Categories A, B, C, cording equipment required in and D. § 153.481(b), procedures to ensure that (a) Unless waived under § 153.491, to no NLS residue is discharged from the have a Certificate of Inspection or Cer- tank when the recording equipment is tificate of Compliance endorsed to incapacitated unless the concentration carry NLS cargo, a ship must have— and total quantity limits for the NLS (1) If U.S., a Cargo Record Book pub- in Annex II are not exceeded. lished by the Coast Guard (OMB App. [CGD 81–101, 52 FR 7781, Mar. 12, 1987, as No. 1625–0094), or, if foreign, a Cargo amended by CGD 81–101, 53 FR 28975, Aug. 1, Record Book having the same entries 1988 and 54 FR 12629, Mar. 28, 1989; USCG– and format as Appendix 4 of Annex II; 2006–25697, 71 FR 55747, Sept. 25, 2006] and (2) A Procedures and Arrangements § 153.491 Waiver of certain equipment Manual meeting paragraph (b) of this for dedicated cargo tanks. section and approved by— (a) The Coast Guard waives (i) The Coast Guard, if the ship is a §§ 153.440(a)(3), 153.480, 153.481, 153.482, United States ship or one whose Ad- and 153.488 and endorses a ship’s Cer- ministration is not signatory to tificate of Inspection or Certificate of MARPOL 73/78; or Compliance allowing a cargo tank to (ii) The Administration, if the ship is carry a single, specific NLS cargo and one whose Administration is signatory no other cargo if the ship’s owner— to MARPOL 73/78. (1) Requests a waiver following the (b) Each Procedures and Arrange- ments Manual under paragraph (a)(2) of procedures in § 153.10; and this section must include the fol- (2) Pledges in writing that while any lowing: waiver is in effect the cargo tank will— (1) The standard format and content (i) Carry only the NLS cargo listed prescribed in Chapter 2 and Appendix D on the Certificate of Inspection or Cer- of the IMO Standards for Procedures and tificate of Compliance; Arrangements for the Discharge of Nox- (ii) Carry no cargo other than the ious Liquid Substances, Resolution NLS; and MEPC 18(22), 1985, or, for ships for (iii) Not be washed or ballasted un- which the only NLS carried is a Cat- less the wash water or ballast water is egory D NLS and ships having a waiver discharged to a reception facility. under § 153.483 or § 153.491, the format (b) The Coast Guard waives §§ 153.470 and content prescribed by the Com- and 153.490(a)(2) if— mandant (CG–522). (1) The ship’s owner requests a waiv- (2) If the ship has a tank that carries er following the procedures in § 153.10; a cargo under a waiver issued under (2) The Coast Guard has issued a § 153.483, procedures ensuring that— waiver to each of the ship’s NLS cargo (i) Category B and C NLSs are dis- tanks under paragraph (a) of this sec- charged from the tank only in the tion; and ports or terminals listed in accordance with § 153.483(b); and (3) The ship’s owner adds to the ship’s (ii) The tank is prewashed after dis- operational manual any provisions for charging each Category B or C NLS un- preventing NLS discharge specified by less § 153.1114 allows the prewash to be the Commandant (CG–522) as a condi- omitted. tion for issuing the waiver. (3) If ventilation is used to clean a [CGD 81–101, 52 FR 7781, Mar. 12, 1987, as tank under § 153.1102(b)(2), ventilation amended by CGD 81–101, 53 FR 28975, Aug. 1, procedures that meet those in Appen- 1988 and 54 FR 12629, Mar. 28, 1989]

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SPECIAL REQUIREMENTS § 153.520 Special requirements for carbon disulfide. § 153.500 Inert gas systems. A containment system carrying car- When Table 1 refers to this section, a bon disulfide must meet the following: cargo containment system must have a (a) Each cargo pump must be of the permanent inert gas system that: intank type and encased within a cy- (a) Maintains the vapor space of the lindrical well that extends from the top containment system in an inert state of the tank to a point no more than 10 by filling the vapor space with a gas cm (approx. 4 in.) above the bottom of that is neither reactive with the cargo the tank. nor flammable; (b) [Reserved] (b) Has a pressure control system (c) The cargo piping and venting sys- that: tems must be completely independent (1) Prevents the inert gas system of those for other cargo. from raising the cargo tank pressure to (d) Pressure relief valves must be more than the relief valve setting; and made of type 304 or 316 stainless steel. (2) Maintains at least a 3.5 kPa gauge (approx. 0.5 psig) pressure within the [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as containment system at all times, in- amended by CGD 78–128, 47 FR 21209, May 17, cluding cargo discharge; 1982] (c) Has storage for enough inerting § 153.525 Special requirements for un- gas to replace that normally lost while usually toxic cargoes. the tank’s atmosphere is maintained in an inert condition (e.g. through tank When Table 1 refers to this section a breathing and relief valve leakage), but containment system must meet the fol- in no case an amount less than 5 per- lowing: cent of the tank’s capacity when meas- (a) Cargo piping and venting systems ured with the gas at ¥18 °C (approx. 0 must be designed so that they can be °F) and a pressure equal to the cargo separated from any containment sys- tank’s relief valve setting; and tem endorsed for a cargo not covered (d) Has connections for any supple- by this section. mental gas supply necessary to main- (b) A cargo tank’s relief valve setting tain the inert gas pressure described in must be not less than 21 kPa gauge paragraph (b) of this section during (approx. 3 psig). cargo discharge. (c) All cargo pumps and valves located below the weatherdeck must be § 153.501 Requirement for dry inert operable from the weatherdeck. gas. (d) A heat transfer system for the When Table 1 refers to this section, cargo must: an inert gas system for the contain- (1) Be independent of other ship serv- ment system must supply inert gas ice systems, except for other cargo containing no more than 100 ppm heat transfer systems, and not enter water. the engine room; (2) Be totally external to the cargo § 153.515 Special requirements for ex- containment system; or tremely flammable cargoes. (3) Be approved by the Commandant When Table 1 refers to this section: (CG–522) for use with toxic cargoes. (a) An enclosed space containing a (e) The cargo must be separated from cargo tank must have an inerting sys- any bunkers by at least two bulkheads. tem that meets the requirements in (f) A cargo containment system must § 153.500 applying to the inert gas sys- have a vapor return connection. tem of a containment system; [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as (b) Cargo discharge pumps must be of amended by CGD 78–128, 47 FR 21209, May 17, a type that does not subject the shaft 1982; CGD 82–063b, 48 FR 4782, Feb. 3, 1983] gland to the cargo under pressure or that is submerged; and § 153.526 Toxic vapor detectors. (c) The cargo tank’s relief valve set- (a) When Table 1 refers to this sec- ting must be no less than 21 kPa gauge tion, a tankship must have two toxic (approx. 3 psig). vapor detectors, at least one of which

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must be portable, each able to measure using materials other than those de- vapor concentrations in the range of scribed in this section for alkylene ox- the time weighted average (TWA) for ides on a case by case basis if: the cargo. The portable detector may (1) The person wishing to have the be a direct reading detector tube in- containment system approved com- strument. These vapor detectors may pletes any tests prescribed by the Com- be combined with those required by mandant (CG–522); and § 153.465. (2) The Commandant (CG–522) ap- (b) When the toxic vapor detectors proves the results of the tests and the required by paragraph (a) of this sec- material for use with alkylene oxides. tion are not available and the cargo (d) The following materials are gen- referenced to this section is transferred erally found unsatisfactory for gaskets, through a cargo pumproom, the tank- packing, insulation, and similar uses in ship must meet § 153.336(b). alkylene oxide containment systems [CGD 78–128, 47 FR 21210, May 17, 1982] and would require extensive testing as described in paragraph (c) of this sec- § 153.527 Toxic vapor protection. tion before being approved: When Table 1 refers to this section, a (1) Neoprene or natural rubber if it tankship must have on board for each might be in contact with the alkylene crew member: oxide. (a) An emergency escape breathing (2) Asbestos or asbestos mixed with apparatus (EEBA) approved by the other materials such as with many Mining Safety and Health Administra- common insulations, packing mate- tion (formerly the Mining Enforcement rials, and gasket materials. and Safety Administration) and the (3) Materials containing oxides of National Institute for Occupational magnesium, such as mineral wools. Safety and Health, or the tankship’s (e) The tank’s relief valve setting flag administration. must not be less than 21 kPa gauge (b) Where the emergency escape (approx. 3 psig). breathing apparatus does not protect (f) If the containment system is the eyes from vapors, a set of goggles equipped with a cooling system, the that either: cooling system must: (1) Meet the specifications of ANSI (1) Not compress the cargo; and Practice for Occupational and Edu- (2) Regulate the cargo temperature cational Eye and Face Protection, Z– automatically and allow manual regu- 87.1(1979); or lation. (2) Are approved by the tankship’s (g) The cargo piping system must: flag administration. (1) Comply with Part 38 of this chap- [CGD 78–128, 47 FR 21210, May 17, 1982] ter; (2) Be completely separate from all § 153.530 Special requirements for al- other systems; kylene oxides. (3) Be assembled from valves, fit- When Table 1 refers to this section, a tings, and accessories having a pres- containment system must meet the fol- sure rating of not less than 1030 kPa lowing: gauge (approx. 150 psig) (American Na- (a) Except as provided in paragraphs tional Standards Institute); and (b) and (c) of this section, a cargo con- (4) Have no threaded joints. tainment system must be made of: (h) The cargo containment system (1) Stainless steel other than types vapor space and each space listed in 416 and 442; and paragraphs (k) and (l) of this section (2) Steel. must have continuous monitoring of (b) Except as provided in paragraph oxygen concentration or have an ar- (c) of this section, gaskets must be rangement to enable sampling with a composites of spirally wound stainless portable oxygen analyzer. steel and Teflon or similar flourinated (i) Valve disks or disk faces, seats, polymer. and other wearing valve parts must be (c) The Commandant (CG–522) ap- made of stainless steel containing no proves a cargo containment system less than 11 percent chromium.

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(j) The venting system must be inde- (1) A cargo tank ventilation system pendent of other containment or tank- that:

ship systems. (i) Maintains the H2S vapor con- (k) When a cargo tank is in an en- centration below 1.85 percent by vol- closed space, the space must have: ume; and (1) An inert gas system meeting the (ii) Prevents sulfur buildup within requirements that apply to the inert itself; and gas system of a containment system in (2) An alarm system designed to oper- § 153.500, or ate when the ventilation system blower (2) A forced ventilation system meet- fails. ing the requirements that apply to a (b) The void spaces around a cargo cargo handling space ventilation sys- tank that carries liquid sulfur must be tem in § 153.312. oil tight. (l) Cofferdams, cargo tanks, double (c) A cargo tank that carries liquid bottom spaces, void spaces and other sulfur and the void spaces surrounding enclosed spaces adjacent to an integral the tank must have connections for cargo tank must have an inert gas sys- sampling vapor. tem meeting the requirements that apply to the inert gas system of a con- § 153.554 Special requirements for tainment system in § 153.500. acids. (m) An intank pump or inert gas dis- When Table 1 refers to this section: placement must be used to discharge (a) Each containment system loading cargo. and discharge connection must have a (n) The cargo discharge piping sys- spray shield; tem must have a remotely actuated quick closing shutoff valve that meets (b) Each cargo containment system § 153.284 at the cargo transfer hose con- must be separated from bunkers by nection. double walls, such as a cofferdam and (o) Cargo hose must: piping tunnels; and (1) Have the specific approval of the (c) Each vessel must have on board a Commandant (CG–522) for use in alkyl- means to determine whether cargo has ene oxide transfer; and leaked into the spaces adjacent to a (2) Be marked ‘‘For Alkylene Oxide cargo containment system. Transfer Only’’. § 153.555 Special requirements for in- (p) All exposed parts of the cargo organic acids. containment system above or on the deck, such as tank domes, cargo piping, When Table 1 refers to this section, a and loading manifolds, must be covered tankship’s shell plating must not be a by a water spray system that: part of the cargo tank. (1) Operates automatically in a fire [CGD 78–128, 47 FR 21210, May 17, 1982] involving the cargo containment system; § 153.556 Special requirements for sul- (2) Has at least two remote manual furic acid and oleum. actuators, one in each emergency shut- (a) Except as prescribed in para- down station required by § 153.296; and graphs (b) and (c) of this section, con- (3) Covers the area of application tainment systems carrying sulfuric with a uniform spray of acid, oleum, or contaminated sulfuric 0.175 l/m2 sec (0.0043 gal/ft2 sec). acid are approved by the Commandant (CG–522) on a case by case basis. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as (b) A containment system carrying amended by CGD 78–128, 47 FR 21210, May 17, 1982; CGD 82–063b, 48 FR 4782, Feb. 3, 1983; sulfuric acid may be: CGD 82–063b, 48 FR 39629, Sept. 1, 1983; CGD (1) Made of unlined steel if the cargo 81–078, 50 FR 21174, May 22, 1985] composition is between 70 and 80 or between 90 and 100 percent acid by § 153.545 Special requirements for liq- weight; uid sulfur. (2) Lined with lead if the cargo com- (a) A containment system carrying position does not exceed 96 percent acid liquid sulfur must have: by weight; or

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(3) Lined with natural rubber or neo- °C (212 °F) in order to prevent the oc- prene if the cargo composition does not currence of a self-sustaining exceed 51 percent acid by weight. exothermic decomposition reaction. (c) A containment system for oleum (b) Octyl nitrates may not be carried may be of unlined steel if the con- in a deck tank unless the tank has a centration of free sulfur trioxide in the combination of insulation and a water oleum exceeds 20 percent by weight. deluge system sufficient to maintain the tank’s cargo temperature below 100 [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as ° ° amended by CGD 82–063b, 48 FR 4782, Feb. 3, C (212 F) and the cargo temperature 1983] rise at below 1.5 °C(2.7 °F)/hour, for a fire of 650 °C (1200 °F). § 153.557 Special requirements for hy- [CGD 88–100, 54 FR 40042, Sept. 29, 1989, as drochloric acid. amended by CGD 92–100, 59 FR 17028, Apr. 11, (a) A containment system that car- 1994; CGD 94–900, 59 FR 45139, Aug. 31, 1994] ries hydrochloric acid must be lined with: § 153.565 Special requirement for tem- (1) Natural rubber; perature sensors. (2) Neoprene; or If a cargo listed in table 1 of this part (3) A material approved for hydro- refers to this section, temperature sen- chloric acid tanks by the Commandant sors must be used to monitor the cargo (CG–522). pump temperature to detect over- (b) Containment systems for con- heating due to pump failures, when taminated hydrochloric acid are ap- carrying that cargo. proved by the Commandant (CG–522) on [CGD 94–900, 59 FR 45139, Aug. 31, 1994] a case by case basis. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as § 153.602 Special requirements for car- amended by CGD 82–063b, 48 FR 4781, Feb. 3, goes reactive with water. 1983] When Table 1 refers to this section, the air inlet to the pressure-vacuum § 153.558 Special requirements for valve for the cargo tank must be lo- phosphoric acid. cated at least 2m (approx. 6.6 ft) above A phosphoric acid containment sys- the weatherdeck. tem must be: (a) Lined with natural rubber or neo- [CGD 78–128, 47 FR 21210, May 17, 1982] prene; TESTING AND INSPECTION (b) Lined with a material approved for phosphoric acid tanks by the Com- § 153.806 Loading information. mandant (CG–522); or (c) Made of a stainless steel that re- Each tankship must have a manual sists corrosion by phosphoric acid. containing information that enables the master to load and ballast the NOTE: ‘‘Phosphoric acid’’, as defined in tankship while keeping structural § 153.2, includes phosphoric acid, superphos- stresses within design limits. phoric acid, and aqueous solutions of phosphoric acid. [CGD 79–023, 48 FR 51009, Nov. 4, 1983] [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as § 153.808 Examination required for a amended by CGD 82–063b, 48 FR 4782, Feb. 3, Certificate of Compliance. 1983; CGD 88–100, 54 FR 40042, Sept. 29, 1989] Before a vessel receives either an ini- § 153.559 Special requirements for ni- tial or a reissued Certificate of Compli- tric acid (less than 70 percent). ance endorsed to carry a cargo from A containment system that carries Table 1 of this part, the vessel must nitric acid (less than 70 percent) must call at a U.S. port for an examination be of stainless steel that resists corro- during which the Officer in Charge, Ma- sion by nitric acid. rine Inspection, determines whether or not the vessel meets the requirements § 153.560 Special requirements for of this chapter. Alkyl (C7–C9) nitrates. [CGD 81–052, 50 FR 8733, Mar. 5, 1985, as (a) The carriage temperature of octyl amended by CGD 95–027, 61 FR 26009, May 23, nitrates must be maintained below 100 1996]

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§ 153.809 Procedures for having the Subpart C—Operations Coast Guard examine a vessel for a Certificate of Compliance. DOCUMENTS AND CARGO INFORMATION The owner of a foreign flag vessel wishing to have the Coast Guard con- § 153.900 Certificates and authorization to carry a bulk liquid haz- duct a Certificate of Compliance exam- ardous material. ination, as required by § 153.808, must proceed as follows: (a) Except as allowed in 33 CFR 151.33(a), no ship may carry a cargo of (a) Notify the Officer in Charge, Ma- bulk liquid hazardous material or an rine Inspection of the port where the NLS residue if the bulk liquid haz- vessel is to be inspected at least 7 days ardous material or NLS is listed in before the vessel arrives and arrange Table 1 or carried under a written per- the exact time and other details of the mission under paragraph (d) of this sec- examination. This notification is in ad- tion unless the ship meets the fol- dition to any other pre-arrival notice lowing: to the Coast Guard required by other (1) The cargo must be carried in a regulations, but may be concurrent cargo tank. with the endorsement application in (2) If a United States ship, the ship § 153.9, and must include— must have a Subchapter D or I Certifi- (1) The name of the vessel’s first U.S. cate of Inspection that is endorsed to port of call; allow the cargo tank to carry the (2) The date that the vessel is sched- cargo. uled to arrive; (3) If a foreign ship, the ship must (3) The name and telephone number have a Certificate of Compliance that of the owner’s local agent; and is endorsed to allow the cargo tank to (4) The names of all cargoes listed in carry the cargo. table 1 of this part that are on board (4) The ship must have an IMO Cer- the vessel. tificate of Fitness issued under § 153.12 (b) Before the examination required that is endorsed to allow the cargo by § 153.808 is begun, make certain that tank to carry the cargo if it is— the following plans are on board the (i) A United States self-propelled ship vessel and available to the Marine In- in foreign waters; or spector. These plans include— (ii) A United States non-self-pro- (1) A general arrangement (including pelled ship in the waters of another Ad- ministration signatory to MARPOL 73/ the location of fire fighting, safety, and 78 and the cargo is a Category A, B, or lifesaving gear); C NLS. (2) A capacity plan; (b) [Reserved] (3) A schematic diagram of cargo pip- (c) No ship may carry any bulk liquid ing on deck and in tanks (including the cargo not listed in § 30.25–1 of this chap- location of all valves and pumps); and ter, Table 151.05 of Part 151 of this (4) A schematic diagram of cargo chapter, Table 1 or Table 2 of this part, tank vent piping (including the loca- Table 4 of Part 154 of this chapter, 33 tion of relief valves and flame screens). CFR 151.47, or 33 CFR 151.49 unless the [CGD 95–027, 61 FR 26009, May 23, 1996] cargo name is endorsed on the Certifi- cate of Inspection or contained in a let- § 153.812 Inspection for Certificate of ter issued under paragraph (d) of this Inspection. section. (d) The Coast Guard at its discretion The rules governing the issuance of endorses the Certificate of Inspection Certificates of Inspection are contained with the name of or issues a letter al- in part 31 of this chapter. lowing the carriage of an unlisted cargo described under paragraph (c) of this section if— (1) The shipowner— (i) Requests the Coast Guard to add the cargo; and

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(ii) Supplies any information the (b) The endorsement of a Certificate Coast Guard needs to develop carriage of Compliance under this part is in- requirements for the bulk liquid cargo; valid if the vessel does not have a valid and IMO Certificate of Fitness. (2) The ship— (c) The endorsement on a Certificate (i) Has a Certificate of Inspection, of Compliance invalidated under para- Certificate of Compliance, or IOPP Cer- graph (b) of this section, becomes valid tificate as specified in this part; again once the ship has the IMO Cer- (ii) Meets the design and equipment tificate of Fitness revalidated or re- requirements of this part specified by issued. the Coast Guard; and NOTE: See § 153.809 for procedures for hav- (iii) Meets any additional require- ing a Certificate of Compliance reissued. ments made by the Coast Guard. [CGD 81–101, 52 FR 7784, Mar. 12, 1987; CGD [CGD 81–101, 52 FR 7783, Mar. 12, 1987, as 95–072, 60 FR 50465, Sept. 29, 1995; 60 FR 54106, amended by CGD 81–101, 53 FR 28975, Aug. 1, Oct. 19, 1995; CGD 95–027, 61 FR 26009, May 23, 1988 and 54 FR 12629, Mar. 28, 1989] 1996]

§ 153.901 Documents: Posting, avail- § 153.903 Operating a United States ability, and alteration. ship in special areas: Categories A, B, and C. (a) No person may operate a United States ship unless the endorsed Certifi- No person may operate a United cate of Inspection is readily available States ship that carries an NLS or NLS residue in a special area unless— on the ship. (a) The ship’s Certificate of Inspec- (b) No person may operate a foreign tion is endorsed in accordance with ship unless the endorsed Certificate of § 153.30; and Compliance or Certificate of Inspection (b) The ship meets the operating re- is readily available on the ship. quirements applying to special areas in (c) No person may operate a ship Regulations 5, 5A, 8 and the Standards under an alternative or waiver granted for Procedures and Arrangements of under this part unless the document Annex II. granting the alternative or waiver is attached to the ship’s Certificate of In- [CGD 81–101, 52 FR 7784, Mar. 12, 1987] spection or Certificate of Compliance. (d) Except as allowed in paragraph (e) § 153.904 Limitations in the endorsement. of this section, the Coast Guard does not accept the following if altered: No person may operate a tankship (1) Certificates of Inspection. unless that person complies with all (2) Certificates of Compliance. limitations in the endorsement on the (3) Certificates of Fitness, unless the tankship’s Certificate of Inspection or alteration is by the issuing authority. Certificate of Compliance. (4) Approved Procedures and Ar- [CGD 81–052, 50 FR 8734, Mar. 5, 1985] rangements Manuals, unless the alteration is approved by the issuing au- § 153.905 Regulations required to be thority. on board. (5) NLS Certificates. No person may operate a tankship (e) A person wishing to change a Pro- unless the most recent editions of this cedures and Arrangements Manual ap- part, and parts 35 and 150 of this chap- proved by the Coast Guard must sub- ter are on board. mit a copy to the Coast Guard fol- [CGD 78–128, 47 FR 21210, May 17, 1982] lowing the procedures for requesting an endorsed Certificate of Inspection in § 153.907 Cargo information. § 153.8. (a) The master shall ensure that the [CGD 81–101, 52 FR 7783, Mar. 12, 1987] following information for each cargo carried under this part is readily avail- § 153.902 Expiration and invalidation able to those on the tankship engaged of the Certificate of Compliance. in cargo operations: (a) The Certificate of Compliance (1) The name of the cargo as listed in shows its expiration date. table 1.

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(2) A description of the cargo’s ap- the cargo’s viscosity exceeds 25 mPa.s pearance and color. at 20 °C, the temperature at which the (3) Hazards in handling the cargo. viscosity is 25 mPa.s. (4) Any special handling procedures (2) For Category C NLS, the cargo’s for the cargo, such as inerting. viscosity at 20 °C in mPa.s and, if the (5) Procedures to follow if the cargo cargo’s viscosity exceeds 60 mPa.s at 20 spills or leaks. °C, the temperature at which the vis- (6) Procedures for treating a person cosity is 60 mPa.s. If the cargo’s vis- exposed to the cargo. cosity varies from shipment to ship- (7) A list of fire fighting procedures ment, the maximum viscosity and and extinguishing agents effective with maximum temperature values may be cargo fires. supplied. (8) Shipper’s name. (b) The person in charge of the ship (9) Loading point. may not accept a shipment of a Cat- (10) Approximate quantity of cargo. egory A, B, or C cargo having a ref- (11) Tank in which the cargo is lo- erence to this paragraph in the ‘‘Spe- cated. cial Requirements’’ column of Table 1 (12) The name of an agent in the unless the person has a written state- United States authorized to accept ment of the cargo’s melting point in °C service of legal process for the vessel. from the cargo’s manufacturer or the (b) The master shall make sure that person listed as the shipper on the bill the following information for cargoes of lading. If the cargo’s melting point other than those carried under this varies from shipment to shipment, the part is readily available on the tank- highest melting point may be supplied. ship: (c) The person in charge of the ship (1) The name of the cargo as listed in shall ensure that the cargo tempera- Table 4 of Part 154 of this chapter or ture is read and recorded in the Cargo § 30.25–1 of this chapter if the cargo is Record Book following the procedures listed in one of these two tables. in paragraph (d) of this section when a (2) The name of the cargo prescribed cargo having a reference to paragraph in the letter authorizing carriage of (a) or (b) of this section in the ‘‘Special the cargo under § 153.900(d) if the cargo Requirements’’ column of Table 1 is is a hazardous or flammable cargo au- unloaded. thorized for carriage under that sec- (d) The cargo temperature measured tion. in paragraph (c) of this section must be (3) The shipper’s name for the cargo made using the following procedure: and the name of the shipper if the (1) Each reading must be made with cargo is neither a hazardous nor flam- the sensor or thermometer required by mable cargo. § 153.440(a)(3) or (c). If a portable ther- [CGD 81–078, 50 FR 21174, May 22, 1985; as mometer is used, it must be located as amended by CGD 88–100, 54 FR 40042, Sept. 29, prescribed for the temperature sensor 1989] in § 153.440(a)(3). (2) A total of 2 readings must be § 153.908 Cargo viscosity and melting made, the first reading to be made no point information; measuring cargo temperature during discharge: Cat- more than 30 minutes after cargo egories A, B, and C. transfer begins and the second reading no more than 30 minutes before the (a) The person in charge of the ship main cargo pump is shut down. may not accept a shipment of a Cat- (3) The cargo’s temperature is the av- egory A, B, or C NLS cargo having a erage of the 2 readings made under reference to this paragraph in the paragraph (d)(2) of this section. ‘‘Special Requirements’’ column of Table 1 unless the person has, from the [CGD 81–101, 52 FR 7784, Mar. 12, 1987] cargo’s manufacturer or the person listed as the shipper on the bill of lad- § 153.909 Completing the Cargo Record ing, a written statement of the fol- Book and record retention: Cat- lowing: egories A, B, C, and D. (1) For Category A or B NLS, the car- (a) The person in charge of a ship go’s viscosity at 20 °C in mPa.s and, if shall ensure that the Cargo Record

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Book required under § 153.490 is com- and if the person in charge of the ship pleted immediately after any of the agrees with the entries, the person in following occurs: charge of the ship shall sign the bot- (1) An NLS cargo is loaded. tom of that page. (2) An NLS cargo is transferred be- (e) The ship owner or operator shall tween tanks on a ship. ensure that— (3) An NLS cargo is unloaded from a (1) Each Cargo Record Book is re- tank. tained on board the ship for at least 3 (4) A tank that last carried an NLS years after the last entry; and cargo is prewashed under this part. (2) Each discharge recording required (5) A tank that last carried an NLS by § 153.1126(b)(1) is retained on board cargo is washed, except as reported the ship for at least three years. under paragraph (a)(4) of this section, [CGD 81–101, 52 FR 7784, Mar. 12, 1987] cleaned, or ventilated. (6) Washings from a tank that last § 153.910 Cargo piping plan. carried an NLS cargo are discharged to the sea. No person may operate a tankship (7) Tanks that last carried an NLS unless the tankship has a cargo piping cargo are ballasted. plan that: (8) Ballast water is discharged to the (a) Shows all cargo piping on the sea from a cargo tank that last carried tankship; an NLS. (b) Shows all cargo valving, pumps, (9) An NLS cargo or NLS residue is and other equipment that is used dur- discharged to the sea by accident or ex- ing cargo transfer; cept as allowed by this part. (c) Shows the cargo tanks; (10) A Surveyor is present during an (d) Shows any modifications nec- operation that this part requires the essary to a containment system that is presence of a Surveyor. to be separated as prescribed under (11) NLS residue or NLS cargo is Part 150 of this subchapter, or §§ 153.525 transferred from cargo pumproom and 153.1020; bilges or transferred to an incinerator. (e) Emphasizes the piping and equip- (12) A waiver is issued to the ship, ment described in paragraphs (a), (b) ship owner, ship operator, or person in and (d) of this section by using con- charge of the ship under this part. trasting colors, line widths, or similar (13) The concentration of a Category methods; and A NLS residue is measured under (f) Shows the cargo loading rates cho- § 153.1120(a). sen under § 153.365(b) for all applicable (14) Any discharge recording equip- cargo lines. ment required by § 153.481(b)(2) fails. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as (b) The person in charge of the ship amended by CGD 78–128, 47 FR 21210, May 17, shall ensure that the Cargo Record 1982] Book is on board and readily available for inspection and copying by the Coast § 153.912 Certificate of inhibition or Guard and when the ship is a U.S. ship stabilization. in the waters of a foreign country (a) When a cargo in Table 1 is re- whose Administration is signatory to ferred to this section, no person may MARPOL 73/78, the authorities of that operate a tankship carrying the cargo country. without a written certification, carried (c) Each officer in charge of an oper- on the bridge of the tankship, from the ation listed under paragraph (a) of this shipper that the cargo is: section, and each Surveyor observing (1) Inhibited; or an operation that this part requires the (2) Stabilized. presence of a Surveyor, shall attest to (b) The certification required by this the accuracy and completeness of each section must contain the following in- Cargo Record Book entry concerning formation: those operations by signing after each (1) Whether the cargo is inhibited or entry. stabilized. (d) After all the entries on a page of (2) The name and concentration of the Cargo Record Book are completed, the inhibitor or stabilizer.

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(3) The date the inhibitor or sta- § 153.932 Goggles and protective cloth- bilizer was added. ing. (4) The length of time the inhibitor (a) The master shall ensure that each or stabilizer is effective. person wear a face mask or tight-fit- (5) Any temperature limitations ting goggles for eye protection against qualifying the inhibitor’s or stabilizer’s splashing or spraying liquids if that effective lifetime. person is: (6) The action to be taken should the (1) Sampling cargo; duration of the voyage exceed the in- (2) Transferring cargo; hibitor’s or stabilizer’s useful life. (3) Making or breaking a cargo hose connection; GENERAL CARGO OPERATIONAL (4) Gauging a cargo tank; or REQUIREMENTS (5) Opening a cargo tank by opening a Butterworth hatch, ullage hatch, § 153.920 Cargo quantity limitations. cargo tank hatch, or similar opening. (a) No person may load a cargo tank (b) The master shall ensure that each or operate a tankship that carries a person wear a face mask or tight-fit- cargo tank containing in excess of 1250 ting goggles for eye protection against m3 (approx. 44,138 ft3) of cargo requir- splashing or spraying liquids if the per- ing a type I containment system. son is: (b) No person may load a cargo tank (1) In the area of the deck where the or operate a tankship that carries a cargo tanks, cargo piping, and cargo cargo tank containing in excess of 3000 pumprooms are located while a cargo m3 (approx. 105,932 ft3) of a cargo re- transfer is taking place; or quiring a type II containment system. (2) In a cargo pumproom, an enclosed space adjacent to a cargo tank, or a § 153.921 Explosives. space containing part of a cargo con- No person may load, off-load, or tainment system. carry a cargo listed in this part on (c) The master shall ensure that each board a vessel that carries explosives person in paragraphs (a) and (b) of this unless he has the prior written permis- section wear any additional protective sion of the Commandant (CG–522). clothing the master believes necessary to protect the person from the cargo’s [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as hazards. amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983] [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78–128, 47 FR 21210, May 17, § 153.923 Inerting systems. 1982] The master shall ensure that the § 153.933 Chemical protective clothing. inert gas systems for any cargo that When table 1 refers to this section, this part requires to be inerted are op- the following apply: erating correctly. (a) The master shall ensure that the following chemical protective clothing GENERAL VESSEL SAFETY constructed of materials resistant to § 153.930 Cargo antidotes. permeation by the cargo being handled is worn by all personnel engaged in an No person may operate a tankship operation listed in paragraph (b) of this that carries a cargo listed in Table 1 section: unless the tankship has on board the (1) Splash protective eyewear. antidotes described for the cargo in the (2) Long-sleeved gloves. Medical First Aid Guide for Use in Acci- (3) Boots or shoe covers. dents Involving Dangerous Goods, pub- (4) Coveralls or lab aprons. lished by IMO. NOTE: ‘‘Guidelines for the Selection of § 153.931 Obstruction of pumproom Chemical Protective Clothing’’, Third Edi- ladderways. tion, 1987, available from the American Con- ference of Governmental Industrial Hygien- The master shall ensure that all ists, 1330 Kemper Meadow Drive, Cincinnati, cargo pumproom ladderways are unob- OH 45240–1634, provides information on the structed at all times. proper clothing for the cargo being handled.

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(b) This section applies during the § 153.935 Opening of tanks and cargo following operations: sampling. (1) Sampling cargo. (a) Except as provided in paragraph (2) Transferring cargo. (b) of this section, the master shall en- (3) Making or breaking cargo hose sure that all cargo tank hatches, ullage connections. openings, and tank cleaning openings (4) Gauging a cargo tank, unless are tightly closed at all times. gauging is by closed system. (5) Opening cargo tanks. (b) The master may not authorize the (c) Coveralls or lab aprons may be re- opening of a cargo tank, except: placed by splash suits or aprons con- (1) To clean a tank; structed of light weight or disposable (2) To transfer a cargo that Table 1 materials if, in the judgment of the allows in a containment system having master— an open gauging system; (1) Contact with the cargo being han- (3) To sample a cargo that Table 1 al- dled is likely to occur only infre- lows in a containment system having quently and accidentally; and an open gauging system; or (2) The splash suit or apron is dis- (4) To sample a cargo that Table 1 al- posed of immediately after contamina- lows in a containment system having a tion. restricted gauging system if: (d) Splash protective eyewear must (i) The tank is not being filled during be tight-fitting chemical-splash gog- sampling; gles, face shields, or similar items in- (ii) The vent system has relieved any tended specifically for eye protection pressure in the tank; from chemical splashing or spraying. (iii) The person sampling the cargo (e) The master shall ensure that each wears the protective clothing required person in the vicinity of an operation during cargo transfer; and listed in paragraph (b) of this section or in the vicinity of tanks, piping, or (iv) The tank is closed tightly fol- pumps being used to transfer the cargo lowing sampling. wears splash protective eyewear under (c) The master shall make sure that paragraph (d) of this section. cargoes requiring closed gauging are sampled only through the controlled [CGD 88–100, 54 FR 40042, Sept. 29, 1989; as sampling arrangement required by amended by USCG–1999–6216, 64 FR 53227, Oct. 1, 1999] § 153.404(d). [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as § 153.934 Entry into spaces containing amended by CGD 78–128, 47 FR 21210, May 17, cargo vapor. 1982] (a) No person may enter a cargo tank, cargo handling space, pumproom § 153.935a Storage of cargo samples. or enclosed space in the cargo area (a) The master shall make sure that without the permission of the master. any cargo samples are stored in: (b) Before permitting anyone to enter (1) A designated and ventilated space a cargo tank, cargo handling space, in the cargo area of the vessel; or pumproom or other enclosed space in (2) An area approved by the Com- the cargo area, the master shall make mandant (CG–522) or the tankship’s sure that: (1) The space is free of toxic vapors flag administration for the stowage of and has sufficient oxygen to support cargo samples. life; or (b) The master shall make sure that (2) Those entering the space wear cargo sample bottles are stored: protective equipment with self-con- (1) In a way that prevents shifting of tained breathing apparatus as de- the sample bottles when the vessel is scribed in § 153.214(b) and an officer at sea; closely supervises the entire operation. (2) In bins or containers constructed of materials that are resistant to the [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78–128, 47 FR 21210, May 17, cargo samples; and 1982]

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(3) Apart from other sample bottles entire external surface is accessible. It containing incompatible liquids (See must be ascertained that the hose as- part 150, subpart A). sembly: [CGD 78–128, 47 FR 21211, May 17, 1982, as (1) Has no loose covers, kinks, bulges, amended by CGD 82–063b, 48 FR 4782, Feb. 3, soft spots, and no gouges, cuts, or 1983] slashes that penetrate any hose rein- forcement; § 153.936 Illness, alcohol, drugs. (2) Has no external and, to the extent The master shall ensure that no per- internal inspection is possible with son participates in cargo related oper- both ends of the hose open, no internal ations who appears to be intoxicated deterioration; and by alcohol or drugs or to be so ill as to (3) Does not burst, bulge, leak, or ab- be unfit for the particular operation. normally distort under static liquid pressure at least as great as the rec- MARKING OF CARGO TRANSFER HOSE ommended working pressure. § 153.940 Standards for marking of [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as cargo hose. amended by CGD 78–128, 47 FR 21211, May 17, 1982; CGD 88–032, 56 FR 35827, July 29, 1991; No person may mark a hose assembly USCG–2000–7790, 65 FR 58463, Sept. 29, 2000] as meeting the standards of this section unless the hose assembly meets CARGO TRANSFER PROCEDURES the following requirements: (a) Each hose assembly must have: § 153.953 Signals during cargo trans- (1) Fully threaded connections; fer. (2) Flanges that meet ANSI B16.5, The master shall ensure that: B16.24, or B16.31; or (a) The tankship displays a red flag (3) Class 1 quick-disconnect couplings in the day and a red light at night that comply with ASTM F 1122 (incor- when transferring cargo while fast to a porated by reference, see § 153.4), and dock; are marked ‘‘C1–1.’’ (b) The tankship displays a red flag (b) Each hose assembly must be when transferring cargo while at an- marked with the: chor; and (1) Date of manufacture; (c) The red flag or the red light is (2) Working pressure discribed in visible from all sides of the tankship. paragraph (d) of this section; (3) Date of the last test made as pre- § 153.955 Warning signs during cargo scribed in paragraph (e) of this section; transfer. and (a) When transferring cargo while (4) Manufacturer’s recommended fast to a dock or at anchor in port, the maximum and minimum temperatures. master shall ensure that the tankship (c) A cargo hose assembly must have displays a warning sign at the gangway a minimum bursting pressure as stated facing the shore so that it may be seen by the manufacturer of at least 5152 from the shore and another warning kPa gauge (approx. 750 psig). sign facing outboard toward the water (d) The working pressure marked on so that it may be seen from the water. a hose must meet the following: (See figure 1). (1) Be at least 1030 kPa gauge (approx. 150 psig). (b) Except as provided in paragraph (2) Not exceeded 20 per cent (one- (f) of this section, each warning sign fifth) of the manufacturer’s stated must have the following legends: bursting pressure. (1) Warning. (3) Not exceed the manufacturer’s (2) Dangerous Cargo. recommended working pressure. (3) No Visitors. (4) Not exceed the test pressure used (4) No Smoking. in the latest test under paragraph (e)(3) (5) No Open Lights. of this section. (c) Each letter must be block style, (e) A cargo hose assembly must be in- black on a white background. spected and tested by placing it in a (d) Each letter must: straight, horizontal position so that its (1) Be 7.5 cm (approx. 3 in.) high;

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(2) Be 5 cm (approx. 2 in.) wide except which may be 1.3 cm (approx. 1⁄2 in.) for ‘‘M’’ and ‘‘W’’ which must be 7.5 cm wide; and (approx. 3 in.) wide and the letter ‘‘I’’

(3) Have 1.3 cm (approx. 1⁄2 in.) stroke transfer or the cleaning under Subpart width. C of 33 CFR part 155; (e) The spacing must be: (3) When cargo regulated under this (1) 1.3 cm (approx. 1⁄2 in.) between let- part is due for transfer, the person in ters of the same word; charge of the transfer has received spe- (2) 5 cm (approx. 2 in.) between words; cial training in the particular hazards (3) 5 cm (approx. 2 in.) between lines; associated with the cargo and in all and special procedures for its handling; and (4) 5 cm (approx. 2 in.) at the borders (4) On each foreign vessel, the person of the sign. in charge understands his or her re- (f) Except as described in § 153.1045, sponsibilities as described in this sub- the legends ‘‘No Smoking’’ and ‘‘No chapter. Open Lights’’ are not required when the cargoes on board the tankship are (b) Upon request by the Officer in neither flammable nor combustible. Charge, Marine Inspection, in whose zone the transfer will take place, the § 153.957 Persons in charge of trans- owner and operator of the vessel, and ferring liquid cargo in bulk or his or her agent, and each of them, cleaning cargo tanks. shall provide documentary evidence (a) The owner and operator of the that the person in charge has received vessel, and his or her agent, and each the training specified by paragraph of them, shall ensure that— (a)(3) of this section and is capable of (1) Enough ‘‘Tankerman-PICs’’ or re- competently performing the procedures stricted ‘‘Tankerman-PICs’’, and necessary for the cargo. ‘‘Tankerman-Assistants’’, authorized for the classification of cargo carried, [CGD 79–116, 60 FR 17158, Apr. 4, 1995] are on duty to safely transfer liquid cargo in bulk or to safely clean cargo § 153.959 Approval to begin transfer operations required. tanks; (2) Each transfer of liquid cargo in No person may make connections for bulk and each cleaning of a cargo tank cargo transfer or transfer cargo unless is supervised by a qualified person des- he has authorization from the person ignated as a person in charge of the in charge of cargo transfer.

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§ 153.964 Discharge by gas pressuriza- (3) The critical or hazardous stages of tion. the transfer operation. The person in charge of cargo trans- (4) The emergency procedures in case fer may not authorize cargo discharge of a spill. by gas pressurization unless: (5) If the vessel is equipped with the (a) The tank to be offloaded has an tank overflow alarm prescribed in SR or PV venting system; § 153.408(c), a procedure for shutdown of (b) The pressurization medium is ei- shore pumps, shore valves, and ship’s ther the cargo vapor or a nonflam- valves that prevents piping system mable, nontoxic gas inert to the cargo; pressures from exceeding those for and which the piping system is designed. (c) The pressurizing line has: (1) A pressure reducing valve whose [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78–128, 47 FR 21211, May 17, setting does not exceed 90% of the 1982; CGD 81–078, 50 FR 21174, May 22, 1985] tank’s relief valve setting and a manual control valve between the pressure § 153.970 Cargo transfer piping. reducing valve and the tank; or (2) For an inert gas medium: The person in charge of cargo trans- (i) A safety relief valve with a cross fer shall ensure that: sectional flow area at least equal to (a) Cargo is transferred to or from a that of the pressurizing line and whose cargo tank only through the tankship’s relieving pressure does not exceed 90 cargo piping system; percent of the tank’s relief valve set- (b) Vapor not returned to shore ting; through the tankship’s vapor return (ii) A manual control valve between system is discharged at the height re- the safety relief valve and the tank; quired for the cargo’s vent riser in and Table 1, and (iii) A check valve between the man- (c) All cargo vapor is returned to ual control valve and the tank. shore through the valved connection on the venting system if: § 153.966 Discharge by liquid displace- (1) The cargo requires closed gauging, ment. is referenced to § 153.372 or is referenced The person in charge of cargo trans- to § 153.525; fer may not authorize cargo discharge (2) The transfer terminal has vapor by liquid displacement unless the liq- return equipment; and uid supply line to the tank has: (3) In his estimation the vapor return (a) A safety relief or pressure reduc- equipment is adequate to handle the ing valve set to operate at no more vapor expected from the tank. than 80 percent of the tank’s relief valve setting; and § 153.972 Connecting a cargo hose. (b) A manual control valve between the tank and the supply line’s safety The person in charge of cargo trans- relief valve or pressure reducing valve. fer may not authorize the connection of a hose to a cargo containment sys- § 153.968 Cargo transfer conference. tem unless: (a) Before he may begin making con- (a) He has ensured himself that the nections for cargo transfer, the person cargo will not weaken or damage the in charge of cargo transfer shall confer hose; with the person supervising the cargo (b) The hose is marked as meeting transfer at the facility. the standards of § 153.940; (b) The person in charge of cargo (c) The date of the hose’s last pres- transfer shall discuss the important assure test is within one year of the date pects of the transfer operation, such as on which the hose is used to transfer the following, with the supervisor at cargo; the facility: (d) The recommended working pres- (1) The products to be transferred. sure marked on a hose used for dis- (2) The cargo loading rates marked charge meets or exceeds the working on the cargo piping plan or the max- pressure marked on the cargo piping at imum safe transfer rates. the hose connection; and

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(e) The cargo’s temperature is within ceed the pressure ranges for which the the manufacturer’s recommended max- transfer hose and containment systems imum and minimum hose tempera- are designed. tures. (r) No vessels that would hazard cargo transfer are alongside the tank- § 153.975 Preparation for cargo trans- ship. fer. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as The person in charge of cargo trans- amended by CGD 78–128, 47 FR 21211, May 17, fer may not approve or continue cargo 1982] transfer unless the following conditions are met: § 153.976 Transfer of packaged cargo (a) No fires or open flames are on or ship’s stores. deck or in compartments near the hose The person in charge of cargo trans- connections when Table 1 requires the fer may neither begin nor continue the cargo’s containment system to have a transfer of a flammable or combustible fire protection system. cargo while packaged cargo or ship’s (b) Any electrical bonding of the stores are transferred unless transfer of tankship to the transfer facility is the packaged cargo or ship’s stores made before the cargo transfer piping does not hazard transfer of the flam- is joined. mable or combustible cargo. (c) Any supplemental inert gas supply necessary to maintain the 3.5 kPa § 153.977 Supervision of cargo trans- gauge (approx. 0.5 psig) pressure in the fer. tank during offloading (see § 153.500) is The person in charge of cargo trans- connected to the inert gas pressure fer shall: control system. (a) Supervise the operation of cargo (d) The transfer connections have system valves; enough slack to allow for vessel move- (b) Monitor the cargo loading rate to ment. ensure it does not exceed that stated (e) The transfer connections are sup- on the cargo piping plan; and ported by tackles. (c) Monitor the cargo level in the (f) The cargo high level alarms, tank tanks to make sure they do not over- overflow alarms and overflow control flow. systems are functioning correctly when [CGD 78–128, 47 FR 21211, May 17, 1982] the cargo is loaded. (g) Joints and couplings are gasketed § 153.979 Gauging with a sounding and mated tightly. tube. (h) Flanges are bolted tightly. (a) No person may remove the cover (i) No repair work is underway in of a sounding tube unless he has au- areas where cargo or cargo vapors may thorization from the person in charge collect. of cargo transfer. (j) Cargo and sea valves are properly (b) The person in charge of cargo set, with those sea valves connected to transfer may not authorize removal of cargo piping lashed or sealed shut. the cover from a sounding tube gauge (k) Venting system bypass valves are unless all tank pressure has been reset for cargo transfer and are operating lieved through the tank’s venting sys- properly. tem. (l) All scuppers are plugged. (m) Smoking is limited to safe § 153.980 Isolation of automatic closing places. valves. (n) Fire fighting and safety equip- The person in charge of cargo trans- ment is ready. fer may isolate automatic closing (o) He is in effective communication valves described in § 153.408(b) from a with the transfer terminal. cargo containment system if the fol- (p) The person in charge of the trans- lowing conditions are met: fer terminal has acknowledged that he (a) The containment system carries is ready to transfer. products to which § 153.408 does not (q) Pressures within the cargo trans- apply. fer and containment systems do not ex- (b) The valves are isolated by:

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(1) Removing the valves; or (b) Any heating coils in the cargo (2) Installing removable pipes and tank are blanked off; and blind flanges to by-pass the valves. (c) The cargo is not carried in uninsulated deck tanks. [CGD 78–128, 47 FR 21211, May 17, 1982] [CGD 78–128, 47 FR 21211, May 17, 1982] § 153.981 Leaving room in tank for cargo expansion. § 153.1003 Prohibited carriage in deck The person in charge of cargo trans- tanks. fer shall ensure that the amount of When Table 1 refers to this section, cargo in a tank does not exceed the cargoes may not be carried in deck tank’s capacity at any ambient tem- tanks. perature between ¥18 °C (approx. 0 °F) and 46 °C (approx. 115 °F). [CGD 95–900, 60 FR 34050, June 29, 1995]

§ 153.983 Termination procedures. § 153.1004 Inhibited and stabilized cargoes. Upon completion of the transfer operation, the person in charge of cargo (a) Before loading a cargo contain- transfer shall ensure that: ment system with a cargo referenced to (a) The cargo transfer connections this section in Table 1, the person in are closed off; charge of cargo transfer shall make (b) The transfer lines and hoses are sure that the cargo containment sys- drained of cargo, either into the tank tem is free of contaminants that could: or back to the transfer terminal; (1) Catalyze the polymerization or de- (c) Any electrical bonding between composition of the cargo; or the vessel and the shore facility is bro- (2) Degrade the effectiveness of the ken only after the cargo hose is discon- inhibitor or stabilizer. nected and all spills removed; and (b) The master shall make sure that (d) Each vent system is returned to the cargo is maintained at a tempera- its nonloading configuration. ture which will prevent crystallization or solidification of the cargo. SPECIAL CARGO PROCEDURES [CGD 78–128, 47 FR 21211, May 17, 1982] § 153.1000 Special operating requirements for cargoes reactive with § 153.1010 Alkylene oxides. water. (a) Before each loading of a cargo When Table 1 refers to this section, containment system with a cargo ref- the master must ensure that the cargo: erenced to this section in Table 1, the (a) Is carried only in a containment person in charge of cargo transfer system completely isolated from any shall: systems containing water, such as slop (1) Unless the tankship is equipped tanks, ballast tanks, cargo tanks con- with independent cargo piping that taining slops or ballast, their vent meets paragraph (d) of this section: lines or piping; and (i) Obtain verification from a Coast (b) Is separated by double walls, such Guard Marine Inspector or from a rep- as cofferdams and piping tunnels, from resentative of the tankship’s flag ad- any system containing water, as for ex- ministration that separation of the al- ample those described in paragraph (a) kylene oxide piping system complies of this section. with alkylene oxide handling plans approved by the Coast Guard or the tank- § 153.1002 Special operating require- ship’s flag administration; and ments for heat sensitive cargoes. (ii) Make sure that each spectacle When Table 1 refers to this section, flange and blank flange connection the master shall make sure that: that is required to separate alkylene (a) The cargo temperature is main- oxide piping systems from other sys- tained below the temperature that tems has a wire and seal attached by a would induce polymerization, decompo- Coast Guard Marine Inspector or a rep- sition, thermal instability, evolution of resentative of the tankship’s flag ad- gas or reaction of the cargo; ministration.

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(2) Purge the containment system (2) No alkylene oxide is loaded into a until the oxygen content of the cargo containment system that within the tank is less than 2% by volume. previous three loadings carried a cargo (b) The person in charge of an alkyl- listed in paragraph (b) of this section ene oxide cargo transfer shall ensure unless the containment system has that: been cleaned to the satisfaction of a (1) No alkylene oxide vapor or liquid Coast Guard Marine Inspector or a per- is released to the atmosphere during son specifically authorized by the Com- cargo transfer; mandant (CG–522) to approve alkylene (2) No vapor return system connected oxide tank cleaning; to an alkylene oxide containment sys- (3) No cargo but an alkylene oxide is tem is at the same time connected to loaded into a containment system another containment system; which last carried an alkylene oxide (3) Alkylene oxide is discharged only unless the containment system has by an intank cargo pump or inert gas been cleaned of alkylene oxide to the displacement; satisfaction of a Coast Guard Marine (4) Transfer hose is approved by the Inspector or person specifically author- Commandant (CG–522) under § 153.530(o) ized by the Commandant (CG–522) to for alkylene oxide transfer and is approve alkylene oxide tank cleaning; marked ‘‘For Alkylene Oxide Transfer and Only’’; and (4) No hose marked ‘‘For Alkylene (5) A water hose is laid out on deck Oxide Transfer Only’’ is used for the with water pressure to the nozzle, and transfer of a cargo other than an alkyl- all alkylene oxide spillages are washed ene oxide. away immediately. (b) The following cargoes are particu- (c) While alkylene oxides are onboard larly reactive with alkylene oxides: the vessel, the master shall make sure (1) Non-oxidizing mineral acids (e.g. that the oxygen content of the vapor hydrochloric, phosphoric); space above the alkylene oxide and (2) Sulfuric acid; those spaces specified in § 153.530 (k) (3) Nitric acid; and (l) is maintained below 2% by vol- (4) Organic acids (e.g. acetic, formic); ume. (5) Halogenated organic acids (e.g. (d) Tankships with independent pip- chloroacetic); ing for alkylene oxides must have on- (6) Sulfonic acids (e.g. alkyl benzene board: sulfonic); (1) Alkylene oxide handling plans ap- (7) Caustic alkalies (e.g. caustic soda, proved by the Coast Guard or the tank- caustic potash; sodium hydrosulfide); ship’s flag administration; and (8) Ammonia and ammonia solutions; (2) Certification from the Coast (9) Aliphatic amines; Guard or the tankship’s flag adminis- (10) Alkanolamines; and tration that the cargo piping for alkyl- (11) Oxidizing substances. ene oxides is independent. [CGD 78–128, 47 FR 21211, May 17, 1982, as [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, amended by CGD 78–128, 47 FR 21211, May 17, 1983; CGD 81–078, 50 FR 21174, May 22, 1985] 1982; CGD 82–063b, 48 FR 4782, Feb. 3, 1983] § 153.1020 Unusually toxic cargoes. § 153.1011 Changing containment sys- (a) No person may load or carry a tems and hoses to and from alkyl- cargo referenced to this section in ene oxide service. Table 1 unless the cargo’s piping and (a) The person in charge of cargo venting systems are separated from transfer shall make sure that: piping and venting systems carrying (1) No alkylene oxide is loaded into a cargoes not referred to this section. containment system that last carried a (b) The master shall ensure that no cargo other than an alkylene oxide un- heat transfer medium that has been less the containment system has been circulated through a cargo referenced cleaned and inspected to make sure it to this section in Table 1 is circulated is in good condition with no heavy rust through a cargo not referenced to this accumulations or traces of previous section unless he determines the me- cargoes; dium to be uncontaminated with cargo.

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(c) No person may discharge over- that cargo is stabilized with an inor- board condensed steam from the heat- ganic acid. ing system of a cargo referenced to this section in Table 1 unless he first deter- [CGD 88–100, 54 FR 40042, Sept. 29, 1989] mines the condensate to be § 153.1040 Carbon disulfide. uncontaminated with cargo. (a) No person may load, carry, or dis- [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as charge carbon disulfide unless the amended by CGD 78–128, 47 FR 21212, May 17, cargo tank has a water pad over the 1982] cargo of at least one meter (approx. 40 § 153.1025 Motor fuel antiknock com- in.). pounds. (b) The person in charge of a carbon (a) No person may load or carry any disulfide transfer operation shall en- other cargo in a containment system sure that carbon disulfide is discharged approved for motor fuel antiknock only by displacement or intank cargo compounds containing lead alkyls ex- pump. cept a cargo to be used solely in the (c) No person may remove a cargo manufacture of motor fuel antiknock pump for a containment system that compounds. carries carbon disulfide unless: (b) The master shall ensure that no (1) The containment system has a gas person enter a pumproom or void space free certificate issued under the stand- that contains piping from a contain- ards in § 35.01–1 of this chapter; or ment system approved for motor fuel (2) The vapor space in the pump well antiknock compounds containing lead is filled with water. alkyls unless: (1) The pumproom or void space at- § 153.1045 Inorganic acids. mosphere has been analyzed for its lead When Table 1 refers to this section, (as Pb) content and found to be less the person in charge of cargo transfer than 0.075 mg/m3; or shall ensure that the legends ‘‘NO (2) The person follows the procedures SMOKING’’ and ‘‘NO OPEN LIGHTS’’ for entering a cargo tank described in are displayed on the warning sign re- paragraph (c) of this section. quired in § 153.955(a) when cargo is (c) No person may enter a cargo tank transferred. endorsed for motor fuel antiknock compounds containing lead alkyls § 153.1046 Sulfuric acid. without prior specific authorization No person may liquefy frozen or from the Commandant (CG–522). This congealed sulfuric acid other than by authorization may be obtained by tele- external tank heating coils. phone ((202) 372–1425) if the person has previously obtained approval for the § 153.1052 Carriage of other cargoes in cargo tank entry procedure from the acid tanks. Commandant (CG–522). (d) No person may enter a cargo tank No person shall load or carry other endorsed for motor fuel antiknock cargoes in a cargo containment system compounds if he does not follow the of a U.S. flag ship endorsed to carry conditions in the authorization under sulfuric acid, hydrochloric acid, or paragraph (c) of this section. phosphoric acid with out specific authorization from the Commandant [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as (CG–522). amended by CGD 78–128, 47 FR 21212, May 17, 1982; CGD 82–063b, 48 FR 4782, Feb. 3, 1983; [CGD 94–900, 59 FR 45139, Aug. 31, 1994] CGD 88–100, 54 FR 40042, Sept. 29, 1989; USCG– 2006–25697, 71 FR 55747, Sept. 25, 2006] § 153.1060 Benzene. § 153.1035 Acetone cyanohydrin or The person in charge of a Coast lactonitrile solutions. Guard inspected vessel must ensure that the provisions of part 197, subpart No person may operate a tankship C, of this chapter are applied. carrying a cargo of acetone cyanohydrin or lactonitrile solutions, unless [CGD 88–040, 56 FR 65006, Dec. 13, 1991]

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§ 153.1065 Sodium chlorate solutions. at which those ships would unload cargo; (a) No person may load sodium chlo- (4) Are not dependent on Coast Guard rate solutions into a containment sys- acceptance under this section to re- tem that previously carried another main in business; and cargo unless the containment system is (5) Sign a Memorandum of Under- thoroughly washed before loading. standing with the Coast Guard. (b) The person in charge of cargo (c) Each application for acceptance transfer shall make sure that spills of as a Surveyor must be submitted to the sodium chlorate solutions are imme- Commandant (CG–522) and must con- diately washed away. tain the following: [CGD 81–078, 50 FR 21174, May 22, 1985] (1) The name and address of the organization, including subsidiaries and di- APPROVAL OF SURVEYORS AND HANDLING visions, requesting acceptance by the OF CATEGORIES A, B, C, AND D CARGO Coast Guard to provide Surveyors. AND NLS RESIDUE (2) A statement that the organization is not controlled by the owners or oper- SOURCE: CGD 81–101, 52 FR 7785, Mar. 12, ators of ships needing the services of 1987, unless otherwise noted. Surveyors or the facilities at which these ships would unload, or a full dis- § 153.1100 Responsibility of the person closure of any ownership or controlling in charge. interest held by such parties. The person in charge of the ship shall (3) A description of the experience ensure that— and qualifications of the personnel who (a) The requirements of §§ 153.1102 would be performing the function of through 153.1132 are met; and Surveyor. (b) The procedures in the approved (4) A statement that the persons who Procedures and Arrangements Manual will be performing the function of Sur- are followed. veyor have been trained in and are familiar with the requirements of Annex § 153.1101 Procedures for getting a II and the regulations in this part. Surveyor: Approval of Surveyors. (5) A statement that the Coast Guard (a) At least 24 hours before a Sur- may verify the information submitted veyor is needed, the person wishing the in the application and may examine services of a Surveyor must contact the persons who will be performing the the Captain of the Port or the Sector function of Surveyor to determine Office that has jurisdiction over the their qualifications. port at which the Surveyor will be (d) The acceptance of an organization needed to— may be terminated by the Com- (1) Arrange for the Coast Guard to mandant if the organization fails to provide a Surveyor; or properly perform or supervise the in- (2) Inform the Coast Guard of the se- spections required in this part. lection of a Surveyor from one of the [CGD 81–101, 52 FR 7785, Mar. 12, 1987, as organizations accepted by the Coast amended by USCG–2006–25556, 72 FR 36330, Guard to provide Surveyors. July 2, 2007] (b) Organizations may be accepted by the Coast Guard to provide Surveyors § 153.1102 Handling and disposal of if they— NLS residue: Cateqories A, B, C, (1) Are engaged, as a regular part of and D. their business, in performing inspec- (a) Except those Category A NLS res- tions or tests of bulk liquid cargo idues that must be discharged under tanks or bulk liquid cargo handling paragraph (c) of this section, NLS res- equipment; idue from an NLS whose vapor pressure (2) Are familiar with the references is 5 kPa (50 mbar) or less at 20 °C (68 °F) in § 153.0(b) and with the requirements must be— of this part; NOTE TO PARAGRAPH (a): The Marine Pro- (3) Are not controlled by the owners tection, Research, and Sanctuaries Act al- or operators of ships needing the serv- lows specific liquids to be discharged to the ices of the Surveyors or the facilities sea under permits issued by the EPA.

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(1) Unloaded to any consignee; (c) of this section allows the prewash (2) Returned to the shipper; to be omitted. (3) Discharged to a reception facility; (b) When a prewash is required for a (4) Retained on the ship; or tank that has unloaded a solidifying (5) Discharged to the sea under cargo or a cargo having a viscosity ex- § 153.1126 or § 153.1128. ceeding 25 mPa sec at 20 °C, the wash (b) Except those Category A NLS res- water used in the prewash must leave idues that must be discharged under the tank washing machine at a tem- paragraph (c) of this section, NLS res- perature of at least 60 °C (140 °F). idue from an NLS whose vapor pressure (c) The prewash required under para- is greater than 5 kPa (50 mbar) at 20 °C graph (a) of this section may be omit- must be— ted if the approved Procedures and Ar- (1) Handled in the same way as the rangements Manual contains a proce- NLS residue under paragraph (a) of this dure for measuring the temperature of section; or all interior cargo tank surfaces (2) Ventilated following a ventilation throughout unloading and under the procedure in the approved Procedures measuring procedure the temperature and Arrangements Manual. of these surfaces remains above— NOTE: The Clean Air Act (42 U.S.C. 7401 et (1) The temperature of the cargo’s seq) allows states to regulate emissions from melting point if the cargo is a Category tank ventilation. There may be other regula- B or C solidifying NLS; or tions, both local and Federal, that affect the (2) The temperature at which the car- use of tank ventilation for safety or environ- go’s viscosity exceeds— mental purposes. (i) 25 mPa.s, if the cargo is a high vis- (c) NLS residue containing Category cosity Category B NLS; or A NLS in pumproom bilges and in spill (ii) 60 mPa.s, if the cargo is a high trays at the manifold must be dis- viscosity Category C NLS. charged to a reception facility. [81–101, 53 FR 28975, Aug. 1, 1988 and 54 FR [CGD 81–101, 52 FR 7785, Mar. 12, 1987, as 12629, Mar. 28, 1989] amended by CGD 81–101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989] § 153.1112 Prewash for tanks containing Category A NLS residue. § 153.1104 Draining of cargo hose: Cat- Unless § 153.1114 allows the prewash egories A, B, C, and D. to be omitted, a cargo tank that un- Before a cargo hose used in dis- loads a Category A NLS cargo must be charging an NLS from a ship’s cargo prewashed following the procedures in tank is disconnected, the hose must be § 153.1120. drained back to the transfer terminal unless the tank unloading the cargo § 153.1114 Conditions under which a has a waiver under § 153.483 or § 153.491. prewash may be omitted: Cat- egories A, B, and C. [CGD 81–101, 53 FR 28975, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989] A prewash required by this part may be omitted if one of the following re- § 153.1106 Cleaning agents. quirements is met: No tank cleaning agent other than (a) A Surveyor has signed a state- water or steam may be used to clean an ment in the Cargo Record Book that NLS residue from a cargo tank except the next cargo has been determined to as prescribed in the approved Proce- be one that may be loaded without dures and Arrangements Manual. washing the tank, and the tank is not washed or ballasted before it is loaded § 153.1108 Heated prewash for solidi- with the next cargo. fying NLS, high viscosity NLS and (b) A Surveyor has signed a state- required prewashes of NLS whose ment in the Cargo Record Book that viscosity exceeds 25 mPa sec at 20 the approved Procedures and Arrange- ≥ C: Categories A, B, and C. ments Manual contains procedures for (a) When a high viscosity or solidi- removing the NLS residue by ventila- fying cargo is unloaded from a cargo tion, and the cargo tank is not washed tank, the cargo tank must be or ballasted before being cleaned fol- prewashed unless § 153.1114 or paragraph lowing the ventilation procedure.

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NOTE: The Clean Air Act (42 U.S.C. 7401 et § 153.1119 When to prewash and dis- seq.) allows states to regulate emissions from charge NLS residues from a tank ventilation. There may be other regula- prewash; unloading an NLS cargo tions, both local and Federal, that affect the in a country whose Administration use of tank ventilation for safety or environ- is not signatory to MARPOL 73/78: mental purposes. Categories A, B, and C. (c) The tank requiring the prewash (a) Except as allowed in paragraphs has a waiver issued under § 153.483 or (b), (c), and (e) of this section, each § 153.491 and the waiver states when the prewash required by this subpart must tank is to be prewashed. be completed and all tank washings must be discharged to a reception facil- § 153.1116 Prewash for tanks unloaded ity before the ship leaves the unloading without following the approved port. Procedures and Arrangements Man- (b) NLS residue from the prewash fol- ual: Categories B and C. lowing the unloading of a Category B If for any reason more Category B or NLS may be transferred to a slop tank for discharge under § 153.1126 instead of C NLS residue remains in a cargo tank being discharged under paragraph (a) of and transfer piping of a ship after un- this section if the prewash is required loading than would remain after a nor- solely under § 153.1118(a)(1). mal discharge of the cargo when the (c) A tank that is required by this unloading procedures in the approved part to be prewashed may be prewashed Procedures and Arrangements Manual in a port other than the unloading port are followed, the tank must be if the following conditions are met: prewashed following the procedures in (1) The person in charge requests per- § 153.1120 unless— mission from the Commandant (CG– (a) Section 153.1114 allows the 522) (tel num; 202–372–1425) if the prewash to be omitted; or prewash port is a foreign port, or the (b) The residue is reduced using an- Captain of the Port having jurisdiction other procedure, and a Surveyor esti- over the unloading port if the prewash mates and states in the Cargo Record port is a U.S. port. Book that the cargo tank and transfer (2) The person in charge supplies with piping contain no more NLS residue the request required under paragraph than they would if discharged following (c)(1) of this section— the procedures in the approved Proce- (i) The name of the ship; dures and Arrangements Manual, and (ii) The name of the owner; no other prewash is required by this (iii) The name of the NLS; part. (iv) The approximate date the tank will be prewashed if the relocation of § 153.1118 Prewash of Categories B the prewash port is for one time only; and C cargo tanks not meeting (v) A written agreement to receive stripping standards: Categories B the tank washings by a reception facil- and C. ity in the prewash port; (a) Unless § 153.1114 allows the (vi) When the prewash port or terminal is in a country whose Adminis- prewash to be omitted, a cargo tank tration is signatory to MARPOL 73/78, from which a Category B NLS is un- a written attestation from the person loaded must be prewashed using the in charge of each prewash port or ter- procedures in § 153.1120(b) if the tank— minal that the Administration has de- (1) Operates under the interim stand- termined the port or terminal to have ard in § 153.481(b); or adequate reception facilities for the (2) Has a waiver issued under § 153.483. NLS residue; (b) Unless § 153.1114 allows the (vii) Written pledges from the person prewash to be omitted, a cargo tank in charge that— from which a Category C NLS is un- (A) The tank to be prewashed will loaded must be prewashed using the not be washed or ballasted before being procedures in § 153.1120(b) if the tank prewashed; and has a waiver issued under § 153.483. (B) The ship will be taken to the reception facility and the tank

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prewashed in accordance with the re- (i) A Surveyor is present; and quirements in § 153.1120; and (ii) Instrumentation or equipment is (viii) Any additional information the available that is capable of measuring Captain of the Port or Commandant the concentration of the Category A (CG–522) requests to evaluate granting NLS in the NLS residue and deter- the permission. mining whether it is below 0.1 per cent (3) The Coast Guard or Commandant by weight. (CG–522) has granted the permission in (2) The equipment specified in writing, the permission is carried § 153.484 must be used as prescribed in aboard the ship, and the person in the approved Procedures and Arrange- charge of the ship has made an entry in ments Manual for the prewash. the Cargo Record Book stating that (3) The wash water must be heated if the permission has been granted. required by § 153.1108, and water or tank (d) Unless the permission granted washings must pass through the cargo under paragraph (c)(4) of this section pump and piping, including any strip- includes alternate conditions of termi- ping equipment, during washing or dur- nation or revocation in writing, the ing discharge of tank washings. permission is— (4) The tank washing machine must (1) Terminated after the tank is be placed in all positions specified for prewashed as pledged in paragraph the tank’s Category A NLS prewash (c)(3)(vii) of this section or loaded with procedure in the approved Procedures another cargo; and Arrangements Manual. (2) Revoked if either of the pledges in paragraph (c)(3)(vii) of this section is (5) The tank must be pumped out invalidated or the agreement in para- each time there are enough tank graph (c)(3)(v) of this section is repudi- washings collected in the bottom of the ated; and tank for the pump to gain suction, and (3) Revoked at any time the ship is if the NLS is immiscible with water or not operated in accordance with the is a solidifying cargo, all floating and pledges in paragraph (c)(3)(vii) of this suspended NLS must be discharged. section and the conditions listed with (6) The washing machine must be op- the granted permission. erated until samples of the discharged (e) A U.S. ship that would otherwise tank washings taken by the Surveyor be required by this part to prewash in are tested using the equipment re- a port without reception facilities quired by paragraph (a)(1)(ii) of this must obtain permission from Com- section and the concentration of NLS mandant (CG–522) to prewash in an al- is below 0.1 per cent by weight. ternate port. (7) After the washing is stopped, the remaining tank washings must be [CGD 81–101, 52 FR 7785, Mar. 12, 1987, as pumped out. amended by USCG–2006–25697, 71 FR 55747, Sept. 25, 2006] (8) The Cargo Record Book must have items 12 through 14 completed and § 153.1120 Procedures for tank must show the Surveyor’s written cer- prewash: Categories A, B, and C. tification of their accuracy. Except where the approved Proce- (9) The Cargo Record Book must have dures and Arrangements Manual pre- the Surveyor’s written concurrence scribes a different procedure, each of that the prewash procedures specified the following steps must be done in the in the approved Procedures and Ar- order listed for the Coast Guard to con- rangements Manual were followed. sider the tanks prewashed under this (b) When this part requires a prewash part: of a tank containing Category B or C (a) When this part requires a prewash NLS residue or when the procedure in of a tank containing Category A NLS this paragraph is used as an alternative residue and the alternative prewash to the prewash procedure under para- procedure in paragraph (b) of this sec- graph (a) of this section, the prewash tion is not used, the prewash must must meet the following: meet the following: (1) If the prewash is for a Category A (1) The prewash may not begin NLS, the prewash may not begin until until— a Surveyor is present.

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(2) The equipment specified in has been unloaded, the number of § 153.484 must be used as prescribed in washing machine cycles specified in the approved Procedures and Arrange- Table 153.1120 must be completed at ments Manual for the prewash. each position to which the washing ma- (3) The wash water must be heated if chine is moved. required by § 153.1108, and water or tank (6) When the NLS is immiscible with washings must pass through the cargo water or is a solidifying cargo, the pump and piping, including any strip- tank must be pumped out each time ping equipment, during washing or dur- enough tank washings collect in the ing discharge of tank washings. bottom of the tank for the pump to (4) Except as required in paragraph gain suction, or the procedures in para- (b)(5) of this section, the number of washing machine cycles specified in graphs (b)(3), (b)(4), and (b)(5) of this Table 153.1120 must be completed. If a section must be repeated two addi- prewash is required by a section listed tional times with the tank pumped out under Column 1 of Table 153.1120 and each time, for a total of three another section listed under Column 2, washings. the number of cycles in Column 1 must (7) Items 12 through 14 in the Cargo be completed but no additional cycles Record Book must be completed and, if are necessary. the prewash is for a Category A NLS, (5) If the approved Procedures and verification that the procedures speci- Arrangements Manual specifies that a fied in the approved Procedures and Ar- tank washing machine must be moved rangements Manual were followed for the prewash of a tank from which a shown by the Surveyor’s endorsement Category A NLS or a solidifying NLS in the Cargo Record Book.

TABLE 153.1120—NUMBER OF WASHING MACHINE CYCLES IN THE PREWASH PROCEDURE

Number of washing machine cycles Column 1: Prewash under § 153.1116 or for Column 2: Prewashes a solidifying NLS under except those listed § 153.1108 under column 1

Category A NLS ...... 2 1 Category B or C NLS ...... 1 1/2

[CGD 81–101, 52 FR 7785, Mar. 12, 1987, as ity or discharged to the sea using the amended by CGD 81–101, 53 FR 28975, Aug. 1, following procedure: 1988 and 54 FR 12629, Mar. 28, 1989] (a) Before discharge begins, drain or flush the NLS residue in the tank’s pip- § 153.1122 Discharges of NLS residue from tank washing other than a ing systems into the tank. prewash: Categories A, B, and C. (b) After draining or flushing, discharge the NLS residue to the sea in Tank washings that do not result accordance with § 153.1128 or transfer it from a prewash and that contain Cat- to a slop tank and discharge in accord- egory A, B, or C NLS residues must be ance with § 153.1126. discharged to a reception facility or discharged to the sea under § 153.1126 or § 153.1126 Discharge of NLS residue § 153.1128 except those tank washings from a slop tank to the sea: Cat- resulting from washing a tank that has egories A, B, C, and D. been cleaned following a ventilation NLS residue in a slop tank may not procedure in the approved Procedures be discharged into the sea unless— and Arrangements Manual. (a) The ship meets the conditions for § 153.1124 Discharges of Category D discharging the NLS residue from a NLS residue. cargo tank in § 153.1128; and (b) For Category B NLS residue NLS residue from Category D NLSs transferred to the slop tank under must be discharged to a reception facil- § 153.1119(b), the NLS is discharged—

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(1) Through an NLS residue discharge the tank washings discharged to a re- system with the flow recording equip- ception facility or to the sea in accord- ment required in § 153.481(b)(2) oper- ance with § 153.1126 or paragraph (a)(1), ating; and (c), or (d) of this section. (2) At a rate maintained at or below (b) To discharge a Category D NLS Q in the following: residue to which 10 times its volume in For tank contents that are miscible water is added and mixed, the ship must be— 14.. 16 VKU L −53 (1) If self-propelled, maintained at a Q =×10 mhr/ speed of at least 12.97 km/hr (7 knots); N and For tank contents that are immis- (2) If not self-propelled, maintained cible at a speed of at least 7.41 km/hr (4 Q=KU1.4 L1.6×10¥5 m3/hr knots). (c) Each ship built before July 1, 1986 where: that discharges Category A, B or C Q=maximum permissible slops discharge rate NLS residues before January 1, 1988 in cubic meters per hour. must be— V=volume of slops in the tank in cubic me- (1) In water at least 25 m (76.2 ft) ters. K=4.3, except K=6.45 if Q is distributed be- deep; tween two NLS residue discharge outlets (2) If discharging the residue of a Cat- on opposite sides of the ship (see egory A NLS cargo, discharging only §§ 153.470(c) and 153.481(b)). residue created by washing the Cat- U=ship’s speed in knots. egory A NLS’s cargo tank after a L=ship’s length in meters. prewash; N=number of tanks containing Category B (3) If discharging the residue of a Cat- NLS residue pumped into the slop tank. egory B NLS cargo, discharging no § 153.1128 Discharge of NLS residue more than the larger of 1 m3 or 1/3000th from a cargo tank to the sea: Cat- the volume of the Category B cargo egories A. B, C, and D. loaded; The discharge of NLS residue to the (4) If discharging the residue of a Cat- sea must be made with the ship at least egory C NLS cargo, discharging no 22.24 km (12 nautical miles) from the more than the larger of 3 m3 of or nearest land, and must meet the fol- 1/1000th the volume of the Category C lowing additional conditions: cargo loaded; (a) To discharge the following the (5) If self-propelled, maintained at a ship must be in water at least 25 m (76.2 speed of at least 12.97 km/hr (7 knots); ft) deep: and (1) Category B or C NLS residue di- (6) If not self-propelled, maintained luted to less than 1 ppm of the NLS. at a speed of at least 7.41 km/hr (4 (2) Category B or C NLS residue re- knots). sulting from washing a tank after the (d) To discharge Category A, B, C, or following washing procedure has been D NLS residue other than as allowed completed: under paragraphs (a) through (c) of this (i) If the tank is not required to be section, the ship must be— prewashed under this part, the tank (1) In water at least 25 m (76.2 ft) must be washed following the proce- deep; dures that apply to a prewash of a Cat- (2) Discharging at a rate not exceed- egory B NLS in § 153.1120 using one ing that used for Qd in § 153.470; washing machine cycle, and the tank (3) If self-propelled, maintained at washings discharged to a reception fa- speed no less than the minimum speci- cility or to the sea under § 153.1126 or fied in the approved Procedures and Ar- paragraph (a)(1), (c) or (d) of this sec- rangements Manual but at least 12.97 tion. km/hr (7 knots); (ii) After the tank has been (4) If not self-propelled, maintained prewashed or has been washed under at a speed no less than the minimum paragraph (a)(2)(i) of this section, the specified in the approved Procedures tank must then be washed with one and Arrangements Manual but at least cycle of the tank washing machine, and 7.41 km/hr (4 knots);

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(5) If discharging the residue of a Cat- ment recorded in the Cargo Record egory A NLS cargo, discharging only Book and reported to the Coast Guard residue created by washing the Cat- within 24 hours after it is completed. egory A NLS’s cargo tank after a prewash; [CGD 81–101, 52 FR 7785, Mar. 12, 1987, as amended by USCG–2006–25556, 72 FR 36330, (6) If discharging the residue of a Cat- July 2, 2007] egory B NLS cargo, discharging no 3 more than the larger of 1 m or 1/3000th § 153.1132 Reporting spills and non- the volume of the Category B cargo complying discharges: Category A, loaded; B, C, and D. (7) If discharging the residue of a Cat- The following shall be reported fol- egory C NLS cargo, discharging no lowing the procedures applying to oil more than the larger of 3 m3 of or in 33 CFR 151.15 (c), (d), (g), (h): 1/1000th the volume of the Category C (a) All discharges of the NLS that do cargo loaded; not meet the requirements of this part. (8) Discharging through an NLS residue discharge system meeting § 153.470. (b) All spills into the water. [CGD 81–101, 52 FR 7785, Mar. 12, 1987, as MAINTENANCE amended by CGD 81–101, 53 FR 28976, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989] § 153.1500 Venting system rupture disks. § 153.1130 Failure of slops discharge recording equipment; operating The master shall ensure that a relief with, reporting failures, and replac- valve exposed to a cargo after the fail- ing pollution equipment: Category ure of a rupture disk or breaking pin is A, B, C, D. cleaned and operates properly before (a) If equipment required in §§ 153.470 the next cargo is loaded into the tank. through 153.488 fails, the Coast Guard Marine Inspection Office, Sector Office, § 153.1502 Fixed ballast relocation. or Captain of the Port must be notified No person may remove or relocate within 24 hours after the failure. fixed ballast unless: (b) No person shall replace a piece of (a) The change is approved by the equipment required by §§ 153.470 Commandant (CG–522); or through 153.488 unless the replacement (b) The ballast is temporarily moved is— under the supervision of a Coast Guard (1) Identical to the original equip- Marine Inspector for examination or ment; or repair of the tankship. (2) Allowed as an alternative under § 153.10. [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as (c) The following conditions apply amended by CGD 82–063b, 48 FR 4782, Feb. 3, when discharge recording equipment 1983] required under § 153.481(b)(2) fails: (1) No NLS residue may be discharged § 153.1504 Inspection of personnel unless the approved Procedures and Ar- emergency and safety equipment. rangements Manual contains proce- The master shall ensure that the per- dures for discharging with incapaci- sonnel emergency and safety equip- tated discharge recording equipment ment required by § 153.214 is inspected while meeting the discharge restric- each 30 days and found to be in good tions of § 153.1126(b) and these proce- condition and operating properly. dures are followed. (2) The failure of the discharge re- Subpart D—Test and Calculation cording equipment must be recorded in Procedures for Determining the Cargo Record Book within 24 hours after the failure. Stripping Quantity, Clingage (3) If the ship operates under a Cer- NLS Residue, and Total NLS tificate of Inspection, the failed dis- Residue charge recording equipment must be repaired or replaced within 60 days SOURCE: CGD 81–101, 52 FR 7788, Mar. 12, after it fails, and the repair or replace- 1987, unless otherwise noted.

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§ 153.1600 Equipment required for con- the final stages of unloading a full ducting the stripping quantity test. tank of cargo. The operator shall ensure the strip- (6) Pump out the water and strip the ping quantity test is conducted with— tank using the procedures specified in (a) Equipment that maintains a the approved Procedures and Arrange- backpressure of at least 100 kPa (1 atm) ments Manual. (gauge) at the connection of the dis- (7) After shutting the manifold valve, charge line of the tank to be tested to open any cargo pump foot valve to the cargo transfer hose, including, but allow water trapped in the cargo pump not limited to, piping whose discharge to drain into the tank. is 10 m above the manifold or a con- (8) Open all valves in the piping sys- stant pressure valve in the discharge tem except the manifold valve and line and set at 100 kPa; allow the water to drain into the tank. (b) A container for measuring the (9) Squeegee or sweep the water volume of water remaining in the tank drained under paragraphs (b)(7) and to an accuracy of ±5%; (b)(8) of this section and any water (c) A squeegee or broom to collect that stands in puddles on the tank standing water on the tank floor; floor to the tank’s low point or sump (d) One or more containers for col- and collect in the container required lecting and transferring water; and by § 153.1600(b) using the equipment re- (e) One of the following for transfer- quired in § 153.1600(e). ring the water remaining in the tank (10) With the manifold valve still to the measuring container: closed, drain any water remaining in (1) A wet vacuum. the piping system on the ship’s side of (2) A positive displacement pump. the cargo transfer manifold valve into (3) An eductor with an air/water sepa- containers, and add this water to that rator in line. collected from the tank under paragraph (b)(9) of this section. Water col- § 153.1602 Test procedure for deter- lected from a cargo line serving a block mining the strippinq quantity. of tanks may be prorated between all (a) The stripping quantity of a tank the tanks it serves if— must be determined by testing the (i) The ship owner requests, under tank under the procedures in para- the provisions of § 153.10, that the water graph (b) of this section unless the be prorated; and Coast Guard agrees under the provi- (ii) The ship’s approved Procedures sions of § 153.10 to accept the stripping and Arrangements Manual specifies quantity, previously determined under that no tank in the block be washed paragraph (b) of this section, of a tank until all the tanks in the block have having similar geometry, internal been discharged. structure, and piping system. (b) When testing a tank for stripping (c) Include any water that is trapped quantity, the owner or operator of the in dead end pipe sections, either by— ship shall proceed as follows: (1) Draining the pipe sections and (1) Make arrangements with the Offi- adding the water to that collected in cer in Charge, Marine Inspection, for a the container under paragraphs (b)(9) Coast Guard Marine Inspector to wit- and (b)(10) of this section; or ness the stripping test. (2) Adding an estimate of the water’s (2) Clean and gas free the tanks to be volume to the sum calculated in para- tested. graph (d) of this section using the (3) Determine the least favorable val- pipe’s dimensions, the ship’s list and ues of list and trim for drainage within trim, and the geometry of the piping the range allowed by the approved Pro- system. cedures and Arrangements Manual. (d) Measure the volume of water col- (4) Maintain the ship’s list and trim lected in the container under para- during the test to that determined graphs (b)(9), (b)(10), and (c)(1) of this under paragraph (b)(3) of this section. section and add to that volume the vol- (5) Load the tank with enough water ume, if any, estimated under paragraph so that unloading the water simulates (c)(2) of this section.

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¥4 ¥5 ¥4 § 153.1604 Determining the stripping Qclingage=1.1×10 Ad+1.5×10 Aw+4.5×10 1/2 quantity from the test results. L Ab (a) For a single test, the stripping where: quantity is the volume of water cal- A =Area of the tank bottom added to the culated under § 153.1602(d). b area in square meters of tank structural (b) If multiple tests are made on a components projected on a horizontal sur- tank without modifications to the face tank, pumping system, or stripping Ad=Area of the tank underdecks added to the procedure between the tests, the strip- area in square meters of tank structural ping quantity must be taken as the av- components projected on a horizontal sur- erage of the stripping quantities for all face

of the tests. Aw=Area of the tank walls added to the area (c) If multiple tests are made on a in square meters of tank structural compo- tank with modifications to the tank, nents projected on a vertical surface pumping system, or stripping proce- L=Length of tank in meters from fore to aft

dure between the tests, the stripping Qclingage=volume of clingage in cubic meters quantity is the stripping quantity de- When using the formula in this para- termined under paragraph (b) of this graph, areas that are inclined more section using only those tests per- than 30° from the horizontal may be as- formed after the last modification. sumed to be vertical.

§ 153.1608 Calculation of total NLS res- NOTE: The Commandant (CG–522) (tel# 202– idue and clingage NLS residue. 372–1425) has information that may be useful (a) The total NLS residue for each in approximating surface areas of typical tank is calculated by adding the strip- structural members for the projected area ping quantity and the clingage NLS calculations under § 153.1608(b). residue. [CGD 81–101, 52 FR 7788, Mar. 12, 1987, as (b) The clingage NLS residue for each amended by USCG–2006–25697, 71 FR 55747, tank is calculated using the following Sept. 25, 2006] formula:

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Special requirements in .933, .1002, .1004, .1020, .1035. .1020. .912(a)(1), .1004, .1020. EQUIREMENTS R tection system Fire pro- INIMUM M Vent Gauge UMMARY OF Vent height 153—S ART ment Cargo system contain- P TO 1 Haz. ABLE A P II NR Open Open A .409 ...... Open NA Open NR A P II B .908(a)...... NA P .440, NSR III Open Open NR NR III B P Open Open A A A .409 ...... Open .409, .440, .908(a), (b) NA S/P ...... Open NA NR A P II I B/3 PV Closed A, B, C .316, .408, .525, .526, .1020 ...... NA C S/P III NR Open Open A, B .440, .908(a) ...... NA C P III 4m PV Restr A .409Restr ...... PV NA 4m III C P T IMO Cat- egory Annex II Pollution ) ...... A P III 4m PV Restr A A .409).409 ...... Restr PV ...... Open ) I-D ...... I-D Open 4m III A P NR A P II greater than ) ...... C P III 4m PV Restr A ).409 ...... Restr ...... PV I 4m III C P all isomers all isomers Alcohol(C12–C16) a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b. all isomers Cargo name ). 6)ethoxylates. 12)ethoxylates. see salt solution (65% or less). Toluene. 40% Diphenyl tolyl phosphate, less than 0.02% ortho- isomer). mixture (each C12–C17). 4% poly(...)ethoxylates. Acetic acid ...... A Acetic anhydride.409 ...... Open Acetochlor ...... Open D cyanohydrinAcetone ...... D NR A P II Acetonitrile ...... A less)or (50% S solution Acrylamide ...... S III Acrylic acid S/P D ...... III Acrylonitrile ...... II A S D II .526Adiponitrile ...... S Restr ...... PV B 4m Alachlor ...... 4m Alcohol (C6–C17) (secondary) poly(3– PV 4m III D S B/3 S S/P II PV II B PV Alcohol (C6–C17) (secondary) poly(7– II Restr B/3 III Alcohol(C9–C11) poly(2.5–9) ethoxylate NR S/P Restr .. Closed Alcohol(C12–C15) poly(...)ethoxylates, PV B/3 A Open PV A A 4m B III Closed Alcohol(C12–C16) poly(1–6)ethoxylates PV Restr ... Closed Alcohol(C12–C16) poly(7–19)ethoxylates .238(a), .409, .527, .554, .933 NSR ...... A NR .238(a), .316, .336, .408, .525, .526, .527, .912( P Alcohol(C12–C16) poly(20+)ethoxylates .238(a), .409, .526, .527, .554, .933 ... A A ...... Alkanes(C6–C9) ( Open Restr .409, .525(a), (c), (d), (e), .912(a)(1), .1002(a), .100 B Alkane(C14–C17) sulfonic acid, sodium C .236(a), (c), (d), .316, .408, .525, .526 III Open A P Alkaryl polyether (C9–C20) .409, .525, .526, .1020 ...... Alkenyl(C16–C20) succinic anhydride P ...... A, C P NR Alkyl acrylate-Vinyl pyridine copolymer in B II .238(a), .409, .526, .912(a)(1), .933, .1002( Open D Alkylaryl phosphate mixtures (more than .238(a), .409, .440, .488, .908(a), ( III III Open P NR S NR Alkyl(C3–C4)benzenes ( Open A NR Alkyl(C5–C8)benzenes ( Open Alkylbenzene, Alkylindane, Alkylindene III Open Open III Open Alkylbenzenesulfonic acid ( .409, .440, .908(a) Open ...... A NR A B/3 Open A PV .409 Open ...... 409, .440, .908(a) ...... None Closed ...... A, B NSR .409; (.440, .908(a)) .316, .408, .525, .526, .1020 ......

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...... NA ...... I-C ...... I-C ...... NA ...... I-D ...... I-D ...... NA ...... NA ...... I-D ...... NA , .908(a), (b) ...... I-D 1 .1002, .1020. A P III 4m PV Restr A .409 ...... Restr PV B NA 4m III A P P III B NR B Open P Open P III A III NR .409, .440, .488 Open NR Open Open Open NSR NSR .409, .440, .908(a), (b) ...... NA .409, .440, .908(a), (b) ...... NA C P III NR Open Open NSR .440, .903, .908(a), (b) ...... C NA P III NR Open Open NSR None...... NSR .440, .908(a), (b) NA ...... Open NA Open NR III C P C P III NR Open Open A None ...... Open NA Open NR III C P C P III C NR P Open Open III D NSR NR .440, .908(a), (b) S Open ...... NA D Open III NSR S 4m .440, .908(a), (b) PV ...... 908(b)...... III NA D NA Restr NR .440, NSR S Open NSR Open Open Open .252, .526, .527, .554, .557, .933, .1045, .1052 II ...... NR III C P I-B A NR Open .236(a), (b), (c), (g) ...... I-D Open NSR .238(d), .252, .336, .409, .554(a), (b) ...... NA ) C S/P III 4m PV Restr A, B, C .236(b), (c), (f), .526, .527 ...... I-D 3 see see ). 3 lution. ethoxylate. solvent. rated) phosphite. (65% or less). (55% or less). 60% or more) polyglucoside solution (55% or less). polyglucoside solution (55% or less). 40% or less) polyglucoside solution (55% or less). chloric acid (20% or less) solution. less). Ammonium hydroxide (28% or less NH 45% and less than 93%). Ammonium thiosulfate (20% or less) solution. less). Coal tar. Alkylbenzenesulfonic acid, sodium salt so- Alkyl(C7–C9) nitrates ...... Alkyl (C7–C11) phenol poly(4-12) B Alkyl(C8–C9) phenylamine in aromatic Alkyl(C10–C20, saturated and unsatu- S/P Alkyl(C8–C10) polyglucoside solution II Alkyl(C12–C14) polyglucoside solution Alkyl(C8–C10)/(C12–C14): (40% or less/ NR Open Alkyl(C8–C10)/(C12–C14): (50/50%) Open Alkyl(C8–C10)/(C12–C14): (60% or more/ A, B Allyl alcohol .409, .560, .1002 ...... Allyl chloride ...... Aluminum chloride (30% or less), Hydro- B B 2-(2-Aminoethoxy) ethanol ...... Aminoethylethanolamine ...... S/P N-Aminoethylpiperazine S/P ...... D 2-Amino-2-methyl-1-propanol (90% or D II D Ammonia aqueous (28% or less), II S S B/3 S Ammonium bisulfite solution (70% or less) B/3 PV III Ammonium hydroxide (28% or less NH PV III Ammonium nitrate solution (greater than D III NR Closed less) or (45% solution sulfide Ammonium Closed NR Open S A 4m Ammonium thiocyanate (25% or less), Open A B Open PV Open III .316, .408, .525, .526, .527, .933, .1020 S/P Ammonium thiosulfate solution (60% or . A, C, D .316, .408, .525, .526, .527, .1020 ...... Restr A .236(b), (c), .409Amyl acetate (all isomers) 4m ...... II tert-Amyl methyl ether ...... A PV Aniline ...... C .236(a), (b), (c), (g)Anthracene oil (Coal tar fraction), ...... B/3 C Restr C PV .236(b), (c), .409, .526 ...... P No P S/P Closed III C A, .238(e), .526, .933, .1002 III II ...... 4m .236(a), (b), (c), (g), .316, .408, .525, .526, .527, .933, 4m B/3 PV PV PV Restr Restr Closed A A A .409 ...... 316, .408, .525, .526, .933, .1020 .409 ......

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2 having ( 2 ). Alkyl(C3– see Butyl butyrate ). ). Butyl butyrate (all a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b. ). all isomers Cargo name C8 paraffins and iso-paraffins, b. pt. having 10% Benzene or more C4)benzenes ( (all isomers). ( 95–120 deg. C sulfonate. phenate sulfide. Cetyl-Eicosyl methacrylate mixture. phosphorosulfide mixture. 10% Benzene or more isomers). ( Aviation alkylates ...... Barium long chain (C11–C50) alkaryl Barium long chain alkyl (C8–C14) Benzene hydrocarbon mixtures Benzenesulfonyl chloride ...... Benzene, Toluene, Xylene mixtures D Benzyl acetate ...... Benzyl alcohol ...... Benzyl chloride ...... C S Bromochloromethane ...... C Butene oligomer ...... B Butyl acetate (all isomers) ...... P D III Butyl acrylate (all isomers) ...... B P Butylamine (all isomers) S/P ...... C Butylbenzene (all isomers), 4m B III S C III P PV Butyl benzyl phthalate II ...... P n-Butyl butyrate, see S/P NR III S/P NR A Open III B/3 Butyl butyrate (all isomers) Restr ...... III oxide Open 1,2-Butylene II ...... PV 4m Open II A, B, D NR B P n-Butyl ether PV Open ...... C 4m .236(a), (b), (c), (g), .409, .526Butyl heptyl ketone ...... 4m Open A ...... Closed PV B/3 iso-Butyl isobutyrate, see A PV C P A, B II Restr S/P Open [C] PV Butyl methacrylate ...... None Restr Butyl methacrylate, Decyl ...... NSR A S/P .316, .408, .525, .526, .527, .912(a)(2), Restr III None NR III ...... P Restr D n-Butyl propionate A Open ...... 236(a), (b), (d), .526, .933 A Butyl toluene III ...... 4m A 4m .409Butyraldehyde (all isomers) ...... III ...... Open C S PV Butyric acid @A PV ...... B/3 .409Calcium alkyl(C9)phenol sulfide, polyolefin ...... 409, .526, .912(a)(1), .1002(a), (b), .1004 A C ...... NR PV .236(b), (c), .316, .408, .525, .526, .527, .1020 D .. Restr III P P Restr Open S/P C A, .409 Restr A 4m ...... Open S III II III PV .372, .409, .440, .500, .526, .530(a), (c), ( A, D A 4m III NR .409 ...... 4m .409, .500, .525, .526, .1020 Restr PV Open ...... PV None 4m ...... A, D Open PV Restr Restr A .409, .526, .912(a)(1), .1002(a), (b), .1004 ... A Restr A .409 A ...... 409 ...... 409, .526 ...... 238(a), .554 ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00218 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 153, Table 1 I-A NA I-B , .1000, ...... I-D 526, .527, ...... NA ...... I-D ...... NA ...... I-D ...... NA ...... NA ...... I-D ...... NA ...... NA ...... I-D 020 ...... NA ...... I-D ...... NA ...... NA ...... NA ...... NA ...... I-D ...... I-D ...... I-D ...... I-D ...... I-D ...... I-D ...... I-D ...... NA ...... I-D ...... NA 1 .1020. .1020, .1040. .1020, .1045. .316, .336, .408, .440, .525, .526, .908(a), (b), .933, D B S/P III 4m PV Restr NSR .236(a), (b), .409 ...... NA B P III NR Open Open A, B, D .409, .440, .488, .908(a), (b) ...... NA C S/P III 4m PV Restr NSR .236(a), (b)...... NA .236(a), NSR PV Restr III C S/P 4m C P III NR Open Open A None ...... Open NA Open NR III C P C P III NR Open Open NSR .236(a), (b), (c), (g) ...... NA Drilling brine (containing Zinc salts). ) Chlorohydrins ...... D S II B/3 PV Closed A .408, .525, .526, .1020 ...... see less). 15%). phenate. methylamine salt solution. one. crude Calcium bromide, Zinc bromide solution, Calcium hypochlorite solution (15% or Calcium hypochlorite solution (more than Calcium long chain alkyl(C5–C10) Calcium long chain alkyl salicylate (C13+) Camphor oil ...... C Carbolic oil ...... disulfideCarbon ...... B A P Carbon tetrachloride ...... B Cashew nut shell oil (untreated) S/P ...... S/P Caustic potash solution ...... B III S/P Caustic soda solution ...... D II Cetyl-Eicosyl methacrylate mixture ...... C II S/P Chlorinated paraffins (C10–C13) NR D II ...... Chloroacetic acid (80% or less) 4m S ...... III Open S/P Chlorobenzene B/3 III ...... A PV B/3 Chloroform S ...... PV C Open ( III PV S III B B/3 4-Chloro-2-methylphenoxyacetic acid, di- Restr B P A, B S/P III PV Closed 4m Closed NR o-Chloronitrobenzene S/P III A, B A (.440, .903, .908(a)) S/P PV Open C I II NR 1-(4-Chlorophenyl)-4,4-dimethyl pentan-3- Closed III NR .409 Open ...... Open NSR III 2- or 3-Chloropropionic acid Restr Open .408, .440, .525, .526, .908(b), .933, .1 ...... B/3 NR .236(c), .252, .408, .500, .515, .520, .525, . acidChlorosulfonic Open ...... 4m NSR PV Open .316, .409, .525, .526, .527, .1020 Open A, B B/3 ...... C PV o-Chlorotoluene NSR ...... C PV .236(a), (c), (g), .933 Open ...... m-Chlorotoluene A, C, D ...... 526, .933 Closed ...... S/P p-Chlorotoluene B ...... 912(a)(1), .1002(a), (b), .1004 .236(a), (c), (g), .933 A Restr ...... S/P A ...... NSR Chlorotoluenes (mixed isomers) Restr B ...... Coal tar ...... III B A, B S/P S/P Coal tar naphtha solvent .238(e), .408, .440, .554, .908(b) I NSR ...... A S/P Coal tar pitch (molten) .408 ...... A ...... 409, .526 NR S/P Cobalt naphthenate in solvent naphtha ...... III II B .409, .525, .526, .527, .1020 B/3 ...... Coconut oil, fatty acid S/P Open ...... D III S/P PV Cottonseed oil, fatty acid ...... A II 4m S/P Creosote (coal tar) B/3 Open C ...... II 4m Creosote (wood) [C] S PV PV ...... II Closed S/P Cresols (all isomers) A 4m PV III ...... A NSR P 4m A PV P III Restr Closed 4m A II PV 4m .408, .525, .526, .527, .554, .555, .602, .933 S/P Restr .238(a), (b), .440, .554, .908(a), (b) PV A, B, C, ...... S/P III A, B, C PV Restr 4m III S/P A, B, C 4m .409, .526 Restr II ...... PV Restr A, B, C .409, .526 II NR PV ...... Restr NR A, B, C .409, .440, .526, .908(b) II Open ...... B, D NR Open .409, .526 Restr ...... A, D NR Restr Open Open NR Open Open .409, .933, .1060 B, D ...... A, D .409, .526, .933, .1060 Open Open ...... A A Open .252, .409, .933, .1060 ...... A, B, D Open .409, .526 ...... A, B, D .409 .440, .903, .908(a), (b) ...... A, B .409 .440, .903, .908(a) ...... 409, .440, .908(b) ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00219 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 153, Table 1 46 CFR Ch. I (10–1–11 Edition) and class group hazard Electrical NA ...... I-D ...... I-C 1004 I-D 1 ...... I-D .526, .933, ...... NA ...... I-C ...... NA ...... I-C ...... I-D ...... I-D a), (b), .1004 .. I-D ...... I-D ...... NA .527, .933, .1020 I-D ...... I-D ...... I-D ...... I-D ...... NA ...... I-D ...... NA ...... I-C ...... I-C ...... I-D ...... I-D ...... I-D ...... I-D ...... NA ...... I-D , .526, .908(a), (b) 1 46 CFR Part 153 Special requirements in .1020. .236(b), (c), .409, .526 ...... I-C D tection system Fire pro- Vent Gauge Vent height ment Cargo system contain- Haz. A S/P II NR Open Open NSR .236(a), (c), .409, .933 ...... NA IMO Cat- egory Annex II Pollution see )...... B S/P II 4m PV Restr A, B, D .236(a), (b), .409, .440, .488 1 mixtures of a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b. Cargo name -Dibutyl phthalate ...... A P II NR Open Open A .409 ...... -Dichloroethyl ether ...... B S/P II 4m PV Restr A .236(a), (b), .409, .526 ...... ′ Cresylate spent caustic. Cresols (all isomers) Phenol Propylbenzene (all isomers). Cresols and Caustic soda solutions Cresols with less than 5% Phenol, see Cresols with 5% or more Phenol, see Cresylate spent caustic ( Cresylic acid, dephenolized ...... Cresylic acid, sodium salt solution, A Crotonaldehyde ...... Cumene (isopropylbenzene), see S/P A 1,5,9-Cyclododecatriene ...... A .409Cycloheptane ...... Restr ...... PV Cyclohexane ...... II S/P A Cyclohexanone4m ...... III C P Cyclohexanone, Cyclohexanol mixture ..... C Cyclohexyl acetate NR II S/P ...... D Cyclohexylamine ...... D Open 1,3-Cyclopentadiene dimer (molten) ...... A B P .409Cyclopentane ...... B/3 A I Restr ...... PV C S .409 Open Cyclopentene ...... Restr PV A B PV S p-Cymene.4094m ...... Restr ...... III PV C P III P iso-Decaldehyde A, B 4m A ...... 4m III S/P B P Open III n-Decaldehyde NoneA 4m Open ...... III C P Open Restr P PV Decanoic acid III None @C P ...... Open ...... A III NR .409 4m .409Decene III ...... III @B P ...... Restr PV III NR 4m Decyl acetate A PV ...... C 4m (iso-, n-) Decyl acrylate Restr II PV 4m ...... III B P 4m Decyl alcohol (all isomers) 4m PV ...... B Decyloxytetrahydro-thiophene dioxide A Restr PV ...... PV A .316, .409, .525, .526, .527, .1020 P Dibromomethane 4m ...... Restr ...... B Restr A PV A P Dibutylamine ...... S/P Restr A C Restr .236(b), (c), .408, .526, .912(a)(1), .1002(a), (b), . III A P Dibutyl hydrogen phosphonate ...... S/P C Restr A A, C, D III ortho .409, .440, .908(b) II S/P ...... NR Dichlorobenzene (all isomers) .236(a), (b), .409, .526 .236(a), (b), (c), (g), .409, .526 ...... B A 3,4-Dichloro-1-butene III Open .236(a), (b), .526 ...... II S/P NR ...... 1,1-Dichloroethane II NR .409 ...... 2,2 Open Open B Open NR 1,6-Dichlorohexane P III B/3 ...... 409, .440, .488, .908(a), (b) D ...... 4m Open Open A PV Open S/P PV B 4m III Open A S A, C, D PV Restr III .440, .903, .908(a), (b) .236(a), (b), (c), .409, .912(a)(1), .1002( Restr S/P ...... A NR III A .409 Open Restr NSR ...... B/3 II .409, .440, .908(b) PV Open ...... A, B, C, 4m .236(a), (b), (d), .408, .525(a), (c), (e), .409, .526 ...... PV 4m A Closed PV A, B, C Restr .409, .440, .908(a) .316, .409, .525(a), (c), (d), (e), .526, ...... Restr A, B A, B .409, .526, .527 ...... 409, .526 ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00220 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 153, Table 1 I-C I-D ...... I-C ...... I-D ...... NA ...... I-C ...... I-D ...... NA ...... NA ...... I-D ...... I-D ...... I-D ...... I-C 27, .1020 ...... I-C ...... I-D ...... I-D ...... I-D ...... I-D ...... NA ...... NA ...... NA ...... NA ...... I-D ...... I-D ...... NA ...... I-D ...... I-D ...... I-D .1020. .908(b), .933. .316, .336, .408, .526, .527 ...... I-D .236(b), (c) ...... I-D .236(a), (b), (c), (g), .409, .525(a), (d), (e), .526, .236(a), (b), .316, .408(a), .440, .525, .526, .1020 ...... I-D .236(a), (b), (c), (g), .409, .440, .500, .501, .526, D D D D D A A S/P A S/P III S/P III NR III Open B NR Open Open NR S/P Open Open NSR II Open NSR .236(a), (b), (c), (g), .409 ...... NA NSR .236(a), (b), (c), (g), .409 B/3 ...... NA PV .236(a), (b), (c), (g), .409 ...... NA Closed A, B, C, D S C III S/P B/3 II PV B/3 Restr PV B Closed A, C, D .236(b), .316, .526 ...... 236(a), (b), (c), (g), .316, .408, .525, .526, .527, .1020 I-D I-C see ...... A S/P II 4m PV Restr A, B, C, 4 Ethyl ether see -Dichloroisopropyl ether ...... C S/P II B/3 PV Restr A, B, C, ′ diethanolamine salt solution. amine salt solution. triisopropanolamine salt solution. tures. Diethylethanolamine less). over 55%). 2,2 .526...... NSR Dichloromethane ...... Restr PV 2,4-Dichlorophenol 4m III D S 2,4-Dichlorophenoxyacetic acid, 2,4-Dichlorophenoxyacetic acid, dimethyl- 2,4-Dichlorophenoxyacetic acid, 1,1-Dichloropropane ...... 1,2-Dichloropropane ...... 1,3-Dichloropropane ...... C (c)...... 1,3-Dichloropropene ...... C Dichloropropene, Dichloropropane mix- D S/P A B .236(b), 2,2-Dichloropropionic acid ...... S/P Open Diethanolamine ...... Open S Diethylamine II ...... S/P D (c)...... Diethylaminoethanol, NR II III D S C II B/3 2,6-Diethylaniline II ...... A A S .409 B/3 .236(b), Diethylbenzene ...... PV Restr PV Open Diethylenetriamine S/P ...... PV Open C B/3 Diethylethanolamine B/3 4m ...... III A P III Diethyl ether, PV NR Restr PV III D S III Di-(2-ethylhexyl) phosphoric acid S/P ...... Restr C 4m A, B Diethyl phthalate Restr ...... Closed A, B C B/3 PV III Diethyl sulfate ...... S/P A, B Diglycidyl ether of Bisphenol A .409, .525, .526, .1020 PV A, B ...... C Diglycidyl ether of Bisphenol F .409, .525, .526, .1020 S/P ...... B NR Di-n-hexyl adipate Restr III ...... 316, .336, .408, .525, .526, .527, .1020 B .409, .525, .526, .1020 ..... Diisobutylamine Restr Open ...... P B III A S/P B 4m DiisobutylcarbinolA Open A A ...... C P Open .409Diisobutylene None PV ...... Restr Open PV ...... III NR P Diisobutyl phthalate II @C P ...... B, C, D III NR .238(e), .266, .500, .501, .554, .933 P Diisopropanolamine ...... Open 4m ...... S/P III B P .236(b), .409, .440, .908(b) .236(a), (b), (c), (g), .409, .525, .526, .5 III Diisopropylamine ...... Restr ...... NR B Diisopropylbenzene (all isomers) III 4m Open ...... C Open N,N-Dimethylacetamide III II ...... A, C PV C NR N,N-Dimethylacetamide solution (40% or A, B, C, A NR P Open Open S/P D NR Dimethyl adipate .236(a), (b), (c), (g), .409, .526 4m Open ...... S/P ...... Closed Dimethylamine solution (45% or less) A Open Open ...... PV P III Dimethylamine solution (over 45% but not III A, D Open B S II Open A C A NR Restr .236(a), (c), (d), .409, .526, .933 NR None II ...... A P III B/3 Open Open S/P A, B, C, .409, .440, .908(a) ...... PV NR .409, .440, .908(a) Open Open ...... B/3 III .409 III Open ...... PV A A Closed Open NR B/3 A Restr Open PV A .409, .440, .908(a) .236(b), (c), .440, .908(a), (b) ...... Open B .236(b), (c), .408, .525, .526, .527, .1020 .... Restr .409 A ...... A, C, D .236(b), .316, .525, .526, .527, .1020 ...... 236(a), (b), (c), (g), .409, .525, .526, .527, .1020 . .409, .440, .908(b) ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00221 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 153, Table 1 46 CFR Ch. I (10–1–11 Edition) and class group hazard Electrical NA I-C ...... NA .1020 NA ...... NA ...... I-C ...... NA ...... NA ...... I-C ...... I-D ...... NA ...... I-D ...... I-C ...... NA ...... I-D ...... NA ...... I-D ...... I-C ...... I-D ...... NA ...... NA ...... NA ...... I-D ...... I-D ...... NA ...... I-D ...... I-D ...... I-D ...... I-D 46 CFR Part 153 Special requirements in .602, .908(a), .1000, .1020. .1020. .236(a), (b), .316, .409, .440, .500, .501, .525, .526, , 6 D tection system Fire pro- Vent Gauge Vent height ment Cargo system contain- Haz. A P III NR Open Open A, B .409...... B NA A Open .408Open ...... A, A S/P NA I NR Open Open NR III A P A S/P II NR Open Open B, C, D .236(b), .409 ...... NA A S/P II NR Open Open NSR .409NSR ...... Open NA Open A S/P II NR C S/P II B/3 PV Closed D C, A, .236(a), (b), (c), (g), .316, .372, .408, .525, .526, .527, [A] P III NR Open Open NSR .409...... NSR Open NA Open NR [A] P III IMO Cat- egory Annex II Pollution ...... B S/P II B/3 PV Closed A, B, C 6 Dodecanol. a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b. see Cargo name over 65%). dium salt solution. 2,2,4-Trimethylpentene. mixture. Tetradecyldimethylamine mixture. tion. Dimethylamine solution (over 55% but not 2,6-Dimethylaniline ...... 408...... N,N-Dimethylcyclohexylamine ...... N,N-Dimethyldodecylamine ...... [C] B DimethylethanolamineOpen .236(b), ...... C Open Dimethylformamide ...... A S/P I S/P Dimethyl glutarate NR ...... D Dimethyl hydrogen phosphite ...... S/P D Dimethyl naphthalene sulfonic acid, so- III C B S Dimethyloctanoic acid II ...... S Dimethyl phthalate ...... NR P Dimethyl succinate S/P ...... C Open Dinitrotoluene (molten) III B/3 ...... C III 1,4-Dioxane ...... A PV C B Dipentene.409 III Open III .408 ...... Restr ...... PV A ...... Open 4m P Diphenyl ...... D 4m P Open Diphenylamine (molten) B, C, D PV 4m ...... III Restr C P NR P 4m Diphenylamines, alkylated PV ...... S/P A P NR .236(b), .409, .440, .908(b) I Diphenylamine, reaction product with ...... III Open PV B III S A, C Restr A Diphenyl, Diphenyl ether mixtures III Restr II ...... Open NR Diphenyl ether ...... 236(a), (b), (c), (g), .316, .409, .525, .526, .527, Restr A, D NR Diphenyl ether, Biphenyl phenyl ether P II Open A, D A A P NR Open B/3 A A, D Diphenylmethane diisocyanate .236(b), (c), .409, .526 Open Open ...... PV B/3 .236(b), .409, .526 III Open ...... P Diphenylol propane-epichlorohydrin resins II .526 None Open PV A ...... P Di-n-propylamine ...... A Closed NR Dithiocarbamate ester (C7–C35) B ...... A Dodecanol NR I A Open ...... Closed C Dodecene (all isomers) III .440, .903, .908(b) ...... Open ...... A Dodecyl alcohol, None A P ...... Open B Dodecylamine, Tetradecylamine mixture .440, .908(b) NR .. S/P Open ...... B NR Dodecyldimethylamine, .316, .408, .525, .526, .527, .1003, .1020 ...... B, D Open P Open III A A .408, .525, .526, .1020Dodecyl diphenyl ether disulfonate solu- P ...... III P Open .236(b), .409, .440, .488, .908(b) Open ...... Dodecyl hydroxypropyl sulfide II NR ...... S/P Dodecyl methacrylate 4m III B ...... 409 A Open ...... Dodecyl-Octadecyl methacrylate mixture III .. PV A NR II III NR Open D Open .408 NR ...... 409 Open Restr ...... P A, B 4m Open S Open Open S PV A Open .409, .440, .908(a) A, D ...... I A III A Restr III .409 .236(b), (c), .409, .525, .526, .1020 ...... NR NR A, D .409, .440, .488, .908(a), (b) NR ...... Open Open .409 ...... Open .236(b), (c), .409, .526 Open ...... Open Restr A A, C A, D .236(b), (c), .912(a)(1), .1004 ...... 408 .236(b), .912(a)(1), .1002(a), (b), .1004 ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00222 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 153, Table 1 I-D I-C I-B (e), ...... NA (e), .526, ...... NA ...... I-D ...... I-D ...... I-D ...... I-D ...... I-D ...... I-C .1004 ...... I-D ...... I-C , .526, .527 .. I-C ...... I-C ...... I-C ...... I-C ...... NA 26, .527, .1020 ... I-D ...... NA ...... NA ...... I-D ...... I-D ...... I-D ...... NA ...... I-C ...... NA ...... I-D ...... I-D ...... I-D ...... I-C ...... I-D ...... I-D ...... I-D .1020. .1011, .1020. .526, .527, .1020. .236(b), .409, .526 ...... NA D C S/P II B/3 PV Closed C A, .252, .372, .408, .440, .500, .525, .526, .530, .1010, 2- Ethoxyethyl acetate Including: 2-Ethoxyethanol Ethylene glycol butyl ether Ethylene glycol tert-butyl ether Ethylene glycol ethyl ether Ethylene glycol hexyl ether Ethylene glycol methyl ether Ethylene glycol n-propyl ether Ethylene glycol isopropyl ether oxide mixture. Dodecyl-Pentadecyl methacrylate mixture Dodecyl phenol ...... Drilling brine (containing Zinc salts) III ...... Epichlorohydrin ...... A Ethanolamine ...... B 2-Ethoxyethyl acetate ...... S A Ethyl acrylate ...... D P Ethylamine ...... less)or C (72% solution ...... P Ethylamine S/P A III C S Ethyl amyl ketone C I ...... A .409 P Ethylbenzene III ...... Restr II PV S/P NR N-Ethylbutylamine S/P ...... C S/P Open III 4m NR III B P NR Ethyl tert-butyl ether III B/3 II ...... C Open Ethyl butyrate Open II Open A ...... II PV NR P .409Ethylcyclohexane ...... Restr ...... PV C 4m Open N-Ethylcyclohexylamine Open A, C, D 4m S/P ...... Open C S-Ethyl dipropylthiocarbamate4m B/3 B/3 PV ...... III C P .912(a)(1), .1002(a), (b), .1004 PV Closed III Ethylene chlorohydrin ...... A ...... Open PV PV NSR D P Ethylene cyanohydrin III ...... A C P Ethylenediamine ...... Restr A C 4m Restr Ethylene dibromide .409 ...... Closed ...... D 4m Closed .408 S Ethylene dichloride III PV ...... A C C P Ethylene glycol butyl ether acetate PV A, III A .316, .408, .525, .526, .527, .1020 C, D ...... S/P B ...... Ethylene glycol diacetate .236(b), (c), .526 ...... B ...... 4m S Ethylene glycol ethyl ether acetate, see III .236(a), (b), (c), (g), .372, .408, .525(a), (d), Restr S/P C .236(b), (c), .252, .372, .409, .525, .5 4m Restr III II PV .409 S/P C .409, .526, .527, .912(a)(1), .1002(a), (b), ...... Ethylene glycol methyl ether acetate ...... PV S/P A 4m Ethylene glycol monoalkyl ether III A II ...... P NR B/3 II PV Restr C P II Open Restr PV D NR 4m .409 .236(a), (b), (c), (g), .409, .525(a), (d), A ...... III B/3 Open Open Restr A PV P III 4m PV Closed S Open A A, C PV NR A, D .409 ...... Restr NR III Open .409 A Closed ...... III .236(a), (b), (c), (g), .409, .526 Open ...... 316, .408, .525, .526, .527, .933, .1020 Restr Ethylene oxide (30% or less), Propylene A ..... NSR None Open ...... NR Open 4m Ethyl ether A, B Open NoneA ...... A ...... 408, .440, .525, .526, .527, .908(b), .1020.409Ethyl-3-ethoxypropionate ...... Restr ...... PV PV A .236(b), (c), .409, .440, .526, .908(b)2-EthylhexanolA ...... Open III .236(b), .408, .526Open ...... 2-Ethylhexyl acrylate None4m Open ...... III C P 2-Ethylhexylamine @C P None ...... Restr A III ...... NR Ethyl hexyl phthalate None ...... B S Ethylidene norbornene ...... A B C Ethyl methacrylate None ...... S/P ...... B II S/P .409 D P ...... III S/P 4m II PV S III NR III B/3 Open Closed PV NR III B/3 Open A Open PV 4m Restr A Open PV Restr .236(g), .252, .372, .408, .440, .500, .515 A A .409, .912(a)(1), .1002(a), (b), .1004 A, B, C, ...... Restr .236(b), (c), .409, .525, .526, .1020 ...... None A, B, D ...... 409, .526, .912(a)(1), .1002(a), (b), .1004

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00223 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 153, Table 1 46 CFR Ch. I (10–1–11 Edition) and class group hazard Electrical NA NA NA NA NA , ...... I-B ...... I-D ...... I-B ...... NA .1004, ...... I-B ...... NA 2 ...... I-B ...... NA ...... I-D ...... I-B ...... I-C ...... NA ...... NA ...... I-C ...... I-D ...... I-D ...... I-D ...... NA ...... I-D ...... I-C ...... I-D ...... I-C ...... I-D 46 CFR Part 153 Special requirements in .1004(a)(2), .1500. .1004(a)(2), .1500. .527, .602, .1000, .1020. .1020. .527, .908(a), (b), .933, .1020. , D , .238(d), .252, .316, .336, .408, .500, .501, .525, .526, 6 tection system Fire pro- Vent Gauge Vent height ment Cargo system contain- Haz. # S/P III 4m PV Closed A .409, .526, .527 ...... I-B C C S/P S/P III II B/3 PV B/3 PV Closed NSR Closed .238(a), (c), .355, .409, .440(a)(1)&(2), .500, .933, NSR .238(a), (c), .355, .409, .440(a)(1)&(2), .500, .933, C P III 4m PV Restr A .409Restr ...... PV I-D 4m III C P A .409Restr ...... PV I-D 4m III C P IMO Cat- egory Annex II Pollution ...... B S/P II B/3 PV Closed A, C ...... A, PV Closed B S/P II B/3 Alkanes(C6– Alkanes(C6– 6 see see a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b. ). Cargo name Glycidyl ester of Tridecyl acetic all isomers mixtures. see acid. C9). not over 60%). but not over 70%). C9) ( Ethylphenol ...... A S/P III NR Open Open B Ethylphenol.526...... Open .4092-Ethyl-3-propylacroleinOpen ...... A Ethyl toluenePV ...... Restr III NR A S/P .409, Ferric chloride solutions ...... III 4m A S/P Ferric nitrate, Nitric acid solution ...... B Fluorosilicic acid (30% or less) ...... C Formaldehyde (50% or more), Methanol C C P Formaldehyde solution (37% to 50%) ...... S/P Formic acid ...... S/P Fumaric adduct of rosin, water dispersion .526...... S/P C III Furfural III ...... D Furfuryl alcoholA ...... B II PV Restr Glutaraldehyde solution (50% or less) .409, III ...... S/P III 4m C S/P 4m Glycidyl ester of C10 Trialkyl acetic acid, NR C S PV 4m Open P D B/3 III PV Glycidyl ester of Tridecyl acetic acid PV ...... Open P III Glyoxylic acid solution (50% or less) Restr ...... III S 4m Heptane (all isomers), B NSR Restr PV Restr A D 4m III Heptanol (all isomers) ...... NR III Heptene (all isomers) NSR PV .409, .440, .554, .555, .908(b), .1045 ...... NSR Open Heptyl acetate P ...... Restr C NR S (molten)Hexamethylenediamine ...... 409 .408, .526, .527, .554, .555, .559, .933, .1045 C ...... NR ..... Open Open .252, .526, .527, .554, .555, .933, .1045 Restr ...... A B Hexamethylenediamine solution III Open ...... C P Hexamethylene diisocyanate III NSR Open A P Open C NR Hexamethyleneimine P S/P ...... 409, .440, .526, .527, .908(b) A .409, .440, .908(a) NR ...... Hexane (all isomers), ...... III Open NSR III Open .238(b), (c), .409, .526, .527, .554, .933 S/P C .... Hexene (all isomers) II III ...... Open 4m NoneHexyl acetate None ...... Open ...... 4m Hydrochloric acid III ...... PV S/P A C B/3 NR Hydrogen peroxide solutions (over 8% but PV A, C, D B PV Open D .238(e), .554(a), (b), (c), .933, .1002Hydrogen peroxide solutions (over 60% 4m II ...... Restr P .409 Restr Open PV P ...... acrylate2-Hydroxyethyl ...... Closed A S 4m A A C N,N-bis(2-Hydroxyethyl) oleamide III ...... B Restr PV III III .409 B ...... 4m A .409 S/P .409 .236(a), (b), (c), (g), .316, .336, .409, .440, .525, .526 4m ...... Restr ...... PV 4m PV P A, C II PV .236(b), (c), .409, .440, .526, .908(b) ...... Restr Restr .236(a), (b), (c), (g), .409, .526 B/3 ...... II Restr A PV A NSR 4m Closed .409 PV ...... 252, .526, .527, .554, .557, .933, .1045, .105 .409 ...... A Restr .408, .525, .526, .912(a)(1), .933, .1002(a), (b), A .409, .440, .488, .908(a), (b) ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00224 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 153, Table 1 NA I-D NA 1), ...... I-D , .1020 I-D 6, .527, ...... NA ...... I-D ...... NA ...... NA .1004 ...... I-D ...... NA ), .1004 ...... I-D ...... NA ...... I-B ...... NA ...... I-D ...... I-C ...... I-D ...... I-D ...... I-D ...... I-D ...... I-D ...... I-D ...... NA ...... NA 1 1 .1000, .1020. .1002(a), .1004, .1020. .908(a), .912(a)(2), .1002, .1004, .1020, .1035. .236(a), (b), .316, .409, .500, .501, .525, .526, .602, None ...... NA , 6 D D A, C None ...... I-D 7 C P III 4m PV Restr A .409, .440, .903, .908(a) ...... I-D C P III NR Open Open A, B (.440, .903, .908(a)) see see Sodium-2- ...... B S/P II B/3 PV Closed A, B, C 6 Dichloromethane Propylbenzene (all ...... Restr PV 4m III D S 7 see Poly(tetramethylene ether) glycols Hydroxytetradeca(oxytetra methylene), see (mw 950-1050). isomers) Alkyl(C12–C14) polyglucoside solution (55% or less). C4)benzenes. (C11+). tion, methyl chloroacetanilide, Metolachlor mercaptobenzothiazol solution 2-Hydroxy-4-(methylthio)butanoic acid ...... alpha-hydro-omega- C Icosa (oxypropane-2,3-diyl)s ...... P Isophorone diamine ...... Isophorone diisocyanate B D III Isoprene ...... Isopropylbenzene, see P C less)or NR (80% S solution ...... Lactonitrile Open Lauric acid III B ...... S/P Lauryl polyglucose (50% or less), III Open B NR S/P III A 4m Long chain alkaryl polyether (C11–C20) Open ..Long chain polyetheramine in alkyl(C2– PV II P 4m Open C Magnesium long chain alkyl salicylate .440, .903, .908(a) PV ...... Restr B/3 A Maleic anhydride III P PV Mercaptobenzothiazol, sodium salt solu- Restr A NR .409, .440, .908(a) ...... B Mesityl oxide Closed III ...... Open Metam sodium solutionD .236(b), (c), .526C, ...... A, ...... Methacrylic acid ...... Open D .238(d), .252, .316, .336, .408, .440, .525, .52 NR Methacrylic resin in Ethylene dichloride .... .372, .409, .440, .912(a)(1), .1002(a), (b A Methacrylonitrile Open ...... D A B S N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6- Open S/P D S .409, .440, .488, .908(a), (b) S/P ...... A, B III Methyl acrylate II ...... S Methylamine solution (42% or less) ...... III Methylamyl acetate II (.440, .903, .908(a)) ...... 4m B Methylamyl alcohol II NR ...... C Methyl butyrate PV ...... A 4m C Open Methylcyclohexane.409 4m ...... Restr ...... S/P PV B/3 C Methylcyclopentadiene dimer PV ...... S/P PV C PV Open Methyl diethanolamine4m Restr ...... III C P P Methylene chloride, see II B P 2-Methyl-6-ethylaniline NSR Closed II Restr ...... A D Restr P A 2-Methyl-5-ethylpyridine III 4m ...... A .236(a), (b), (c), (g), .409 C P III ...... Methyl formate A, B B/3 ...... PV III S Methyl heptyl ketone .236(b), (c), .409, .526 ...... 236(b), .316, .408, .525, .526, .527, .912(a)( PV ...... B 4m S/P D .236(b), .408, .440, .526, .908(a) 4m ...... III .238(a), .526, .912(a)(1), .1002(a), .1004 PV ...... B 4m Restr III PV S/P Closed PV III S 4m A, B A, C, D Restr NR P III PV Restr .236(a), (b), (c), (g), .316, .408, .525, .526, .527 NR Open Restr A .409, .526, .527, .912(a)(1), .1002(a), (b), II Open A NR III Restr Open A Open Open B/3 .409 B A ...... 4m .409 PV Open ...... A, B, C, .409 PV ...... A, D .409 .236(b), (c) Restr ...... Restr .236(b), .409 A ...... A .372, .408, .440, .525, .526, .527, .1020 ...... 409 ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00225 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 153, Table 1 46 CFR Ch. I (10–1–11 Edition) and class group hazard Electrical I-D I-D I-B ...... I-B ...... NA ...... I-D ...... I-D ...... I-D ...... NA 0 ...... I-D ), .933, .1020 I-D ), .526, .908(b), ...... NA 0 ...... I-D ...... I-D ...... I-D ...... I-C ...... NA ...... NA ...... I-D ...... NA 46 CFR Part 153 Special requirements in .1020. .1025. .933, .1000, .1045. .236(b), (d), (f), (g), .409, .526 ...... I-D D tection system A, C A .236(b), .409, .526, .1002(a), (b), .1003 ...... I-C A, C .236(b), .409, .526, .1002 ...... A, C I-C .409, .526 ...... A, C .236(b), .409, .526 ...... I-C I-C .236(b), .409, .526, .1002(a), (b), .1003 ...... I-C Fire pro- 7 7 7 7 7 Vent Gauge Vent height ment Cargo system contain- Haz. A S/P I B/3 PV Closed C B, A, .252, .316, .336, .408, .525, .526, .527, .933, .1020, D S III 4m PV Restr PV 4m Restr PV III D S 4m III D S D S III 4m PV Restr PV 4m III D S C S/P II B/3 PV Closed NSR .316, .408, .526, .527, .554, .555, .556, .559, .602, [A] P III NR Open Open NSR .409...... NSR Open NA Open [A] P NR III IMO Cat- egory Annex II Pollution tert-Amyl see ...... Restr PV 4m III D S 7 a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b. . 7 Cargo name mixture of sulfuric and nitric ...... Restr PV 4m III D S Alkanes(C6–C9). Alkanes(C6–C9). 7 . . 7 7 ). mers)), see mers)), see taining lead alkyls). solution (40% or less). more) mixture mixture mixture acids methyl ether. 2-Methyl-2-hydroxy-3-butyne ...... Methyl methacrylate ...... III Methyl naphthalene (molten) ...... 2-Methyl-1-pentene (Hexene (all iso- D S A 4-Methyl-1-pentene (Hexene (all iso- S Methyl tert-pentyl ether, S/P III 2-Methylpyridine ...... II 3-Methylpyridine II 4m ...... 4-Methylpyridine ...... D PV C 4m 4m Methyl salicylate ...... D alpha-Methylstyrene PV PV ...... A S Restr .4093-(Methylthio) propionaldehyde ...... S/P ...... Open B Metolachlor ...... Open A S A, B, C, Morpholine Restr ...... Restr B II Motor fuel anti-knock compounds (con- II NR III B P P A, B S/P A, D D II Naphthalene (molten) ...... S/P B/3 B/3 Naphthalene sulfonic acid, sodium salt III .409, .526, .912(a)(1), .1002(a), (b), .1004 .409 III PV ...... PV ...... A B/3 S Naphthenic acid III ...... PV Naphthenic acid, sodium salt solution ...... NR 4m Neodecanoic acid Closed ...... S/P Closed A B/3 III Nitrating acid ( Open PV [A] A, C Closed A, C PV C Nitric acid (70% or less) Open II D ...... C, A, 4m P Nitrobenzene .236(b), .408, .525(a), (c), (d), (e), .1020 Restr P ...... 236(b), .408, .525(a), (c), (d), (e), .102 .236(b), .408, .440, .525(a), (c), (d), (e . PV Nitroethane Closed A C P Nitroethane, 1-Nitropropane (each 15% or 4m A, D B B, C II PV II o-Nitrophenol (molten) Restr ...... S/P III .4091- or 2-Nitropropane .409, .526, .912(a)(1), .1002(a), (b), .1004 .238(e), .316, .408, .525, .526, .527, .1020 ...... S/P ...... NR Nitropropane (60%), Nitroethane (40%) A NR Restr B II Open NR Open Nitropropane (20%), Nitroethane (80%) II A, D Open Open S/P .236(b), (c), .409 4m (o-, p-) Nitrotoluene Open ...... Open B/3 .409, .440, .908(b) A PV ...... II NSR PV B A Restr .409 B/3 ...... 409 S/P ...... Closed PV NSR None A, D ...... II .408, .526, .527, .554, .555, .559, .933, .1045 Closed .. .316, .336, .408, .440, .525, .526, .908(b A, C, D B/3 .409, .440, .525, .526, .908(a), (b), .1020 PV Closed A, B .316, .408, .440, .525, .526, .908(b), .102

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00226 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 153, Table 1 ...... I-D ...... NA ...... NA ...... NA ...... I-D 1 1 1 ...... I-D ...... I-D ...... NA ...... NA ...... NA ...... NA 1 1 1 1 , .908(a), (b) ...... I-D 1 A P I NR Open Open A .408 ...... Open NA Open A P NR I A .408 ...... Restr PV A NA .409 ...... A P Open 4m I NA Open NR A P A II .409 ...... Restr PV NA 4m A P II B P II B NR A P .409 ...... Open Open NA Open Open II NR III A P A 4m PV .409; (.440, .908) Restr A B P .409; (.440, .908) III NR Open Open A .409, .440, .488, .908(b); (.908(a)) B P II B NR P Open A .409 ...... Restr PV NA Open II 4m III A P A 4m B PV .409, .440, .488, .908(b); (.908(a)) P Restr A III B NR .409, .440, .488, .908(b); (.908(a)) P Open Open III A 4m PV (.409, .440, .908) Restr A .409; (.440, .908) C P III 4m PV Restr B, C .409...... C I-D B, Restr PV 4m III C P Alkanes(C6– see C9). name’’ contains ‘‘principal components’’) ST 1, Cat A. name’’ contains ‘‘principal components’’) ST 1, Cat A. name’’ contains ‘‘principal components’’) ST 2, Cat A. name’’ contains ‘‘principal components’’) ST 2, Cat A. name’’ contains ‘‘principal components’’) ST 2, Cat B. name’’ contains ‘‘principal components’’) ST 2, Cat B, mp. equal to or greater than 15 deg. C. name’’ contains ‘‘principal components’’) ST 2, Cat B. name’’ contains ‘‘principal components’’) ST 2, Cat B, mp. equal to or greater than 15 deg. C. name’’ contains ‘‘principal components’’) ST 3, Cat A. name’’ contains ‘‘principal components’’) ST 3, Cat A. name’’ contains ‘‘principal components’’) ST 3, Cat B. name’’ contains ‘‘principal components’’) ST 3, Cat B, mp. equal to or greater than 15 deg. C. name’’ contains ‘‘principal components’’) ST 3, Cat B. Nonane (all isomers), Nonene (all isomers) ...... Nonyl acetate ...... Nonyl alcohol (all isomers) ...... B Nonyl phenol ...... C Nonyl phenol poly(4+)ethoxylates ...... C Noxious liquid, N.F., (1) n.o.s. (‘‘trade P A B P P Noxious liquid, F., (2) n.o.s. (‘‘trade III P P III III Noxious liquid, N.F., (3) n.o.s. (‘‘trade 4m II NR III PV NR Noxious liquid, F., (4) n.o.s. (‘‘trade Open Open NR NR Restr Open Open Noxious liquid, N.F., (5) n.o.s. (‘‘trade Open Open A A Open A Open Noxious liquid, N.F., (6) n.o.s. (‘‘trade A A .409 .409 ...... None ...... Noxious liquid, F., (7) n.o.s. (‘‘trade .409 ...... 409, .440, .488 Noxious liquid, F., (8) n.o.s. (‘‘trade Noxious liquid, N.F., (9) n.o.s. (‘‘trade Noxious liquid, F., (10) n.o.s. (‘‘trade Noxious liquid, N.F., (11) n.o.s. (‘‘trade Noxious liquid, N.F., (12) n.o.s. (‘‘trade Noxious liquid, F., (13) n.o.s. (‘‘trade

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00227 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 153, Table 1 46 CFR Ch. I (10–1–11 Edition) and class group A hazard Electrical I-B ...... I-D ...... NA ...... I-B ...... NA ...... I-D 5, .556, .602, ...... I-D ...... I-C ...... I-D ...... NA ...... I-D ...... I-D ...... NA ...... I-C ...... I-D ...... I-D ...... I-D ...... I-D 1 ...... NA ...... NA ...... NA ...... I-D ...... I-D ...... NA ...... NA 46 CFR Part 153 1 1 Special requirements in .908(a), .933, .1000, .1045, .1052. tection system Fire pro- Vent Gauge Vent height ment Cargo system contain- Haz. B P III 4m PV Restr A .409, .440, .488, .908(b); (.908(a)) D S II B/3 Open Closed A, D .238(a), .408, .525(a), (c), (e), .554, .933, .1020 ...... I-D C C P P III NR III Open 4m Open PV A Restr (.440, .903, .908) A (.440, .903, .908) C S/P II B/3 PV Closed A .408, .440, .488, .525, .526, .908(a), (b), .933, .1020 ... I-D IMO Cat- egory Annex II Pollution . Alkyl(C7– Alkanes(C6–C9) C P III PV 4m Restr A .409 ...... I-D see a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b. Cargo name or solutions with 5% more ). C9) nitrates. name’’ contains ‘‘principal components’’) ST 3, Cat B, mp. equal to or greater than 15 deg. C. name’’ contains ‘‘principal components’’) ST 3, Cat C. name’’ contains ‘‘principal components’’) ST 3, Cat C. acid (36%) mixture. Phenol Noxious liquid, F., (14) n.o.s. (‘‘trade Noxious liquid, N.F., (15) n.o.s. (‘‘trade Noxious liquid, F., (16) n.o.s. (‘‘trade Octane (all isomers), Octanol (all isomers) ...... Octene (all isomers) ...... Octyl acetate ...... C Octyl aldehydes ...... B Octyl nitrates (all isomers), see C B P Olefin mixtures (C5–C7) ...... P Olefin mixtures (C5–C15) ...... P alpha-Olefins (C6–C18) mixtures ...... C P Oleum III ...... B III .526...... B Oleylamine III ...... C P NR Palm kernel acid oil III A ...... PV Restr P 4m Paraldehyde .409, Open ...... A S/P II 4m P NR Paraldehyde-ammonia reaction product S/P PV ... C 4m III Pentachloroethane Open Open ...... C III 1,3-Pentadiene PV ...... C II Pentane (all isomers) III ...... Restr Open A 4m B P n-Pentanoic acid (64%), 2-Methyl butyric S/P C 4m PV Restr S/P B/3 A A .526...... C 4m Pentene (all isomers) PV ...... S/P PV III n-Pentyl propionate III PV None ...... S/P A ...... Perchloroethylene ...... Restr II .409, C NSR P Phenol ( PV None .409 Restr II Restr Closed ...... C NR ...... 4m III Restr B/3 A III B S/P 1-Phenyl-l-xylyl ethane NSR Open B/3 .409, .440, .908(b) ...... A PV ...... P Phosphate esters, alkyl(C12–C14)amine III .. B/3 A PV P Phosphoric acid 4m .316, .408, .440, .526, .527, .554, .55 ...... Open C PV Phthalic anhydride (molten) .409 ...... PV B ...... Restr 4m Pinene, see the alpha- or beta- isomers III .409A A, B D ...... Closed alpha-Pinene.409 III .409, .440, .908(a), (b) PV ...... Restr PV ...... C P Restr A A Restr P 4m .440, .903, .908(a), (b)4m ...... III A P S 4m NSR PV Restr S/P A, B III PV .409, .440, .908(b) ...... III .236 (a), (b), (c), (g), .525(a), (e), .408, .526, .1020 .316, .409, .525, .526, .1020 A N III ...... III .409, .526, .912(a)(1), .1002, .1004 Restr ...... NR Restr 4m Open A NR 4m PV .372, .409 A ...... Open Open PV .409 Open Restr A, B ...... 409 Restr ...... NSR A None ...... A, D .554, .555, .558, .1045, .1052, .933 ...... 409 .440, .908(a), (b) ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00228 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 153, Table 1 NA 20 I-D ...... I-D ...... NA ...... NA ...... I-D ...... I-D ...... NA ...... NA .1011 ...... I-B ...... I-D ...... NA ...... I-D .527, .1020 ... I-D ...... NA ...... NA ...... NA ...... I-C ...... I-D 27, .1020 ...... I-D ...... I-D 27, .1020 ...... I-D ...... I-D ...... I-D ...... I-D ...... NA ...... NA ...... I-D ...... NA ...... I-D ...... I-D ...... I-D ...... I-D ...... NA 1 .1020. , D , .236(a), (b), .409, .500, .501, .525, .526, .602, .1000, 6 B P III NR Open Open A, D .409, .440, .488, .908(a), (b) ...... NA C P III NR Open Open A .903 ...... Open NA Open NR III C P C P III NR Open Open A, B (.440, .903, .908(a)) C S/P III NR Open Open NSR .236(a), (b), (c), (g), .440, .908(a), .933 ...... NA ... D S II B/3 PV Closed A, C A, ...Closed PV B/3 D S II 6 Caus- see Alkane (C14-C17) Propylbenzene (all see Rosin oil. see tic potash solution isomers). solvent. ative (C28–C250). 950-1050). 65% solution, sulfonic acid, sodium salt solution. dium hydroxide solution. beta-Pinene ...... B P III 4m PV Restr A .409beta-Pinene ...... Restr PV Pine oil ...... Polyalkyl(C18–C22) acrylate in Xylene4m .....III B P Polyalkylene oxide polyol ...... C Poly(2+)cyclic aromatics ...... C Polyethylene polyamines ...... C Polyferric sulfate solution ...... P A Polyisobutenamine in aliphatic (C10–C14) C P C P Polymethylene polyphenyl isocyanate III P S/P Polyolefinamine (C28–C250) III ...... S/P Polyolefinamine in alkyl(C2–C4)benzenes III NR Polyolefin phosphorosulfide, barium deriv- III II C 4m Open III C NR Poly(tetramethylene ether) glycols (mw PV NR 4m Open Open P Potassium hydroxide solution, NR Open P PV Restr Open Open A Potassium oleate ...... Open Potassium thiosulfate (50% or less) III ...... III A A Open Restr iso-Propanolamine ...... C A n-Propanolamine .440, .908(a) ...... C NSR NR Propionaldehyde A, D ...... 4m C Propionic acid ...... 440, .903, .908(a) Open .409, .440, .903, .908(a) ...... C P ...... PV Propionic anhydride ...... 238(d) .236(b), (c), .400, .440, .908(b) C .409 ...... P Propionitrile ...... S/P Open D iso-Propylamine ...... S/P C III iso-Propylamine solution (70% or less) Restr S/P .... C A n-Propylamine III III ...... C S n-Propylbenzene, see III A S/P NR C III S/P C NR NR Propylbenzene (all isomers) Open ...... None S/P ...... III n-Propyl chloride NR III Open Open ...... S/P 4m .409, .440, .903, .908(a)iso-Propylcyclohexane II ...... Open ...... Open S/P A Propylene dimer II PV ...... Open Open D 4m 4m Propylene oxide ...... II A C Open .409...... Propylene tetramer B/3 PV ...... PV II NSR A C P Propylene trimer B/3 ...... Restr PV C A, D S iso-Propyl ether B/3 A ...... PV B P .236(b), Pyridine None .409 ...... B/3 Restr Restr ...... PV Restr ...... B A PV P III Rosin, .236(b), (c), .440, .526, .908(b) S/P .236(b), (c), .440, .526, .903, .908(b) ...... Closed D PV ...... Rosin oil III 4m ...... III D S A Closed A P III Rosin soap (disproportionated) solution A, D ... 4m Closed P Sodium alkyl (C14-C17) sulfonates 60- III II C, D .316, .409, .526, .527 B ...... Closed S 4m PV C, D 4m .252, .316, .336, .408, .525, .526, .5 B III .238(a), .409, .527, .554, .933 PV .238(a), .526 A, C, D ...... 236(b), (c), .372, .408, .440, .525, .526, 4m Sodium aluminate solution III B/3 PV ...... P .236(b), (c), .408, .500, .525, .526, .5 .236(a), (b), (c), (g), .408, .440, .525, .526, .527, .10 Sodium borohydride (15% or less), So- III PV Restr PV 4m P Restr D 4m PV Restr A 4m III PV Restr Closed A, B III PV A S A, C Restr A NR .409 .409 Restr ...... NR Open Restr A .372, .408, .440, .500, .526, .530, .1010, III .409, .440, .903, .908(a) Open A ...... 409 Open A ...... Open NR .409 A ...... Open .409 A ...... 409, .500, .515, .912(a)(1) ...... Open .409, .440, .488, .908(a), (b) ...... 409 NSR ...... 236(a), (b), (c), (g), .933 ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00229 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 153, Table 1 46 CFR Ch. I (10–1–11 Edition) and class group hazard Electrical NA I-D I-B .. NA ...... NA ...... NA ...... NA ...... NA ...... NA ...... NA ...... NA b), .933, .1000, ...... NA ...... I-C ...... NA ...... NA 1 1 46 CFR Part 153 Special requirements in .933, .1002, .1020. .1045, .1046, .1052. tection system Fire pro- Vent Gauge Vent height ment Cargo system contain- Haz. B S/P II B/3 PV Closed C A, .236(a), (b), (c), (g), .316, .372, .408, .525, .526, .527, B P III NR Open Open A, B .409; (.440, .908(a)) B P III NR Open Open NSR .409...... NSR NA Open Open NR III B P B S/P III 4m PV Restr NSR .409, .440, .526, .908(b), .933 ...... NA D S III NR Open Open NSR None...... NSR NA Open Open NR III D S C S/P III 4m .238(e)...... B NA PV A, Restr Open Open NSR NR III D S .236(a), (b), .933 ...... NA IMO Cat- egory Annex II Pollution Naph- Caustic see ) ...... B P III NR Open Open A .409, .440, .488, .908(a), (b) ...... NA Naphthalene sulfonic a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b...... B S/P III 4m PV Restr A, B .236(b), .409, .912(a)(1), .1002(a), (b), .1004 ...... Dimethyl naphthalene sul- Cargo name monomer crude and distilled Metam sodium solution. soda solution thenic acid, sodium salt solution. solution, see Sodium carbonate (3% or less) solution. less). less). solution. less). see (40% or less), see tion. alkylamine mixture. fonic acid, sodium salt solution. acid, sodium salt solution (40% or less). Sodium chlorate solution (50% or less) ....Sodium dichromate solution (70% or less) Sodium dimethyl naphthalene sulfonate III C Sodium hydrogen sulfide (6% or less), S S/P Sodium hydrogen sulfite solution (45% or II III Sodium hydrosulfide solution (45% or Sodium hydrosulfide, Ammonium sulfide NR B/3 Open Open Sodium hydroxide solution, Closed Open Sodium hypochlorite solution (15% or NSR Sodium long chain alkyl salicylate (C13+) NSR Sodium-2-mercaptobenzothiazol solution .236(b), (c), .408, .525, .933, .1020Sodium N-methyldithiocarbamate solution, [C] ...... 409, .933, .1065 ...... B Sodium naphthalene sulfonate solution P S/P Sodium naphthenate solution, see III Sodium nitrite solution ...... III Sodium petroleum sulfonate ...... NR Sodium silicate solution ...... B Sodium sulfide solution (15% or less) NR Open ...... B Sodium sulfite solution (25% or less) Open ...... C Sodium tartrates, succinates solu- Open S/P B S/P Open C Sodium thiocyanate solution (56% or less) A P Styrene II S/P NSR B Sulfohydrocarbon, long chain (C18+) II P III NR (.440, .903, .908(a)) Sulfur (molten) .236(a), (b), (c), (g), .409, .440, .908(b), .933 III ...... acidSulfuric NR P ...... Open III NR Open III B/3 Tall oil ( Open C Open III PV Open NR NSR S Open Open S/P A NR Closed .408, .525(a), (c), (d), (e), .1020 A Open ...... Open III III NSR NSR .409, .440, .908(a) Open ...... 236(a), (b), .409, .440, .526, .908(b) NR NR ...... None ...... NSR Open .409, .440, .908(b) Open ...... Open Open .238(a), .409 ...... NSR NSR .440, .554, .555, .556, .602, .908(a), ( .252, .440, .526, .545 ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00230 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 153, Table 1 NA I-D I-C . I-C 27, ...... NA ...... I-D ...... NA ...... NA ...... I-D ...... NA ...... I-D ...... I-C ...... I-D ...... I-D ...... I-D ...... I-D ...... NA ...... I-C ...... I-D ...... NA ...... I-D ...... I-C ...... I-C ...... I-D ...... NA 1020 ...... I-C ...... I-D ...... I-D ...... I-D ...... I-C ...... I-D ...... NA .908(a), (b), .933, .1020. .602, .908(b), .1000, .1020. .908(b), .1020. .236(a), (b), (c), (g), .316, .408, .440, .525, .526, .527, .316, .408, .525, .526, .933, .1020 ...... I-D , D , .236(b), .316, .408, .440, .500, .501, .525, .526, .527, .316, .409, .500, .501, .525, .526, .602, .1000, .1020 ... NA 6 6 D D B S/P II B/3 PV Closed A, C A, PV Closed B S/P II B/3 A P II NR Open Open A .409 ...... Open I-D Open NR A P II A S/P I 4m PV Closed A, B .408, .525(a), (c), (d), (e), .1020 ...... I-D C P III NR Open Open A None ...... Open I-D Open NR III C P C P III NR Open Open A .440, .908(a), (b) ...... NA D S III NR Open Open A, C .236(a), (b), (c), (g), .409 ...... NA . 6 ...... D S III NR Open Open A .236(b), (c), (g) ...... 3 ...... C S/P II 4m PV Closed A, C ...... A, PV Closed C S/P II 4m 6 resin acids less than ). 20% ortho isomer). ortho isomer). and 2,4,4- isomers). (2,2,4- and 2,4,4- isomers) butyrate. Tall oil, fatty acid ( Tall oil fatty acid, barium salt ...... Tall oil soap (disproportionated) solution ..1,1,2,2-Tetrachloroethane ...... B Tetraethylenepentamine A B TetrahydrofuranNone ...... Open B Tetrahydronaphthalene S/P ...... Open Tetramethylbenzene (all isomers) ...... A D P .409TolueneNR ...... Restr ...... S/P PV III C P Toluenediamine III ...... A 4m III C P S III Toluene diisocyanate III C NR P o-Toluidine Open ...... NR III B/3 Tributyl phosphate ...... S/P 1,2,3-Trichlorobenzene (molten) Open PV Open ...... C A III 1,2,4-Trichlorobenzene.409 ...... 4m ...... B Open 1,1,1-Trichloroethane Open II A ...... Open A 1,1,2-Trichloroethane PV Restr S/P ...... NR B Trichloroethylene A NR ...... III P C P None...... B/3 Open 1,2,3-Trichloropropane NSR S/P ...... NSR C Restr II .409, .440, .908(a) S/P ...... PV Open C 1,1,2-Trichloro-1,2,2-trifluoroethane Open ...... Open C III .316, .409, .525, .526, .1020 .409, .440, .908(a), (b)Tricresyl phosphate (less than 1% of the ...... A, D ...... I S/P B/3 II A NR S/P Closed III C P Tricresyl phosphate (1% or more of the PV S/P NR .409, .526, .912(a)(2), .1004 A, B, C, ...... III B/3 Open 4m Tridecanoic acid III ...... PV NoneTriethanolamine ...... II ...... Closed PV A B/3 Triethylamine Open .409 ...... Open B B/3 A, C Triethylbenzene PV ...... D Open Closed Triethylene glycol di-(2-ethylbutyrate) B/3 PV A ...... Restr C Triethylenetetramine ...... A, C, D NR .316, .408, .525, .526, .933, .1020 PV A P II P .... Triethyl phosphite Restr ...... [C] A, B,C, .316, .408, .440, .526, .908(b), .933 S Triisopropylated phenyl phosphates ...... Restr S/P ...... D .409Trimethylacetic acid .409, .440, .526, .908(b), ...... NSR Closed ...... B less)or (30% solution III Trimethylamine ...... P NSR A III A, B, C, II D S .409, .525, .526, .933, .1020Trimethylbenzene (all isomers) C ...... S/P ...... NR .316, .409, .525, .526, .1020Trimethylhexamethylenediamine (2,2,4- ...... III NR P B/3 Open A S III Trimethylhexamethylene diisocyanate Open S/P III PV .409...... NR Open D 2,2,4-Trimethyl-1,3-pentanediol-1-iso- II Open NR Open III P II B/3 A Restr Trimethyl phosphite Open PV A ...... A, Open 1,3,5-Trioxane NR ...... Restr 4m PV B/3 A, B, C III Trixylenyl phosphate Open ...... Open # A PV PV .409, .440, .488, .908(a), (b) .236(b), (c), .409, .525, .526, .527, . 4m Restr ...... III D S .236(a), (b), (c), (g) A ...... Open 4m A A, B, D S Closed Restr PV None A ...... 409, .526 ...... C A, P .236(a), (b), (c) A, C ...... III Restr .236(a), (b), (c), (g), .372, .408, .440, .525, .526, .5 .409 .238(a), .266, .554 ...... I A 4m PV NR .409 ...... Open Restr Open A, D A .409, .526, .602, .1000 ...... 408 ......

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00231 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Pt. 153, Table 1 46 CFR Ch. I (10–1–11 Edition) and class group hazard Electrical I-C I-D I-D Ethyl ether). How- see ...... NA 0, .500, .515, ...... NA ...... I-D ...... I-C ...... I-D 1), .1002(a), (b), ...... NA ...... I-D ...... I-D ...... NA a GESAMP Hazard Profile or by analogy to ...... NA ...... NA ...... I-D 1 1 46 CFR Part 153 8 Special requirements in but may be used in addition to the cargo name. When omplete the evaluation of its pollution hazards. Until .912(a)(1), .1002(a), (b), .1004. .1004. .526, .527, .912(a)(1), .1002(a), (b), .1004. tection system Fire pro- Vent Gauge Vent height ment Cargo system contain- ’’, and both names are in roman type, either name may be used as the cargo (e.g., Diethyl ether, Haz. see B P III 4m PV Restr A .409 ...... Restr PV NA 4m III B P C S/P III 4m PV Restr A .236(b), .526...... I-D A PV Restr .236(b), III C S/P 4m IMO Cat- egory Annex II Pollution ) ...... C P III 4m PV Restr A .409, .440, .908(b) ). 3 Trixylenyl phos- see a. b. c. d. e. f. g. h. i. j. g. f. e. d. c. a. b. Cargo name ortho-, meta-, para- ( 8 A, B, C, D—NLS Category of Annex II MARPOL 73/78. III—Appendix III of Annex II (non-NLS cargoes) MARPOL 73/78. #—No determination of NLS status. For shipping on an oceangoing vessel, see 46 CFR 153.900(c). [ ]—A NLS category in brackets indicates that the product is provisionally categorized and further data are necessary to c @—The NLS category has been assigned by the U.S. Coast Guard, in absence of one IMO. The is based upon S—The commodity is included because of its safety hazards. P—The commodity is included because of its pollution hazards. S/P—The commodity is included because of both its safety and pollution hazards. Undecyl alcohol ...... B P III NR Open Open A .409, .440, .908(b) ...... phate. taining more than 2% NH mixture. The provisions contained in 46 CFR part 197, subpart C, apply to liquid cargoes containing 0.5% or more benzene by volume. b. This column lists the IMO Annex II Pollution Category. c. This column lists the hazard(s) of commodity: d. This column lists the type of containment system cargo must have (see 153.230 through 153.232). e. This column lists the height of any vent riser required (see 153.350 and 153.351). f. This column lists any vent control valve required (see 153.355). g. This column lists the type of gauging system required (see 153.400 through 153.406). Column Heading Footnotes: a. The cargo name must be as it appears in this column (see 153.900, 153.907). Words italics are not part of the Trixylyl phosphate, A Turpentine.409A ...... Restr PV .409Undecanoic acid ...... Open 1-Undecene ...... 4m Open III B P 1- B Urea, Ammonium nitrate solution (con- NR III B P Valeraldehyde (all isomers) ...... Vinyl acetate P ...... etherethyl Vinyl ...... C chloride...... C Vinylidene III C S/P Vinyl neodecanate D ...... S/P Vinyltoluene NR S/P ...... III Open B S White spirit (low (15–20%) aromatic) III ...... A Xylenes II Open Xylenes, Ethylbenzene (10% or more) 4m S/P B II 4m S/P PV A Xylenol 4m ...... PV Zinc alkaryl dithiophosphate (C7–C16) 4m ..... III PV III P Zinc alkyl dithiophosphate (C3–C14) PV ...... B Restr C .440, .908(a), (b) Restr ...... NR 4m Closed B Restr A II S/P Open PV A A B P Open P 4m III Restr .409, .500, .526 ...... 236(b), (d), (f), (g), .252, .372, .408, .44 PV .409, .912(a)(1), .1002(a), (b), .1004 .236(a), (b), .372, .409, .440, .500, .526, .527, D A, B III ...... B, A, NR III .236(a), (b), (c), (g), .409, .912(a)( Open .409, .912(a)(1), .1002(a), (b), .1004 NR Restr ...... NR Open Open A Open Open A, B Open A, B .409 ...... 409, .440, .908(a), (b) A, B ...... (.440, .903, .908(a)) .409; (.440, .908(a)) ever, the referenced entry is preferred. hazard evaluation is completed, the pollution category assigned used. a closely related product having an NLS assigned. one entry references another by use of the word ‘‘

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VerDate Mar<15>2010 14:46 Nov 01, 2011 Jkt 223197 PO 00000 Frm 00232 Fmt 8010 Sfmt 8002 Q:\46\46V5.TXT ofr150 PsN: PC150 Coast Guard, DHS Pt. 153, Table 1 ene diisocyanate; Trimethylhexamethylene ical Code prohibits aluminum as a material of con- Code requires that the vapor space over this cargo o and cause an explosion. above. eg F). nt of 0 deg C (32 F) or more. ication of Gases, Vapors and Dusts for Electrical Equip- id; Hydrochloric acid; Nitrating Nitric acid (70% or ds and Volatile Solids Relative to Explosion-Proof Elec- pment under Subchapter J (Electrical Engineering) of this e used. A dry chemical system may not be substituted for s. d spaces. dant (CG–522) (see 153.460). The types are as follows: is omitted. A is a foam system for water soluble cargoes (polar solvent foam). B is a foam system for water insoluble cargoes (non-polar solvent foam). C is a water spray system. D is a dry chemical system. NSR means there is no special requirement applying to fire protection systems. NR—No requirement. NA—Not applicable. N.F.—non-flammable (flash point greater than 60 deg C (140 F) closed cup (cc)). F.—flammable (flash point less than or equal to 60 deg C (140 F) closed cup (cc)). n.o.s.—not otherwise specified. ST—Ship type. Cat—Pollution category. 153.440 and .908(a) apply to the chemical, mixtures containing with a viscosity of 25 mPa.s at 20 deg C (68 d 153.440 and .908(b) apply to the chemical, mixtures containing with a melting point of 0 deg C (32 F) 153.488 applies to the chemical, and mixtures containing with a melting point of 15 deg C (59 F) above. Applies to mixtures containing no other components with safety hazards and where the pollution category is C or less. Aluminum is a questionable material of construction with this cargo since pitting and corrosion has been reported. The IMO Chem Some tank pitting has been reported when this cargo is contaminated with water, including moisture in the air. The IMO Chemical Water is effective in extinguishing open air fires but will generate hazardous quantities of gas if put on the cargo enclose Dry chemical extinguishers should not be used on fires involving these cargoes since some dry chemicals may react with the carg Special requirement .908(b) only applies to the para- (p-) isomer, and mixtures containing para-isomer having a melting poi h. This column lists the type of fire protection system required. Where more than one is listed, any listed may b i. This column lists sections that apply to the cargo in addition general requirements of this part. The 153 Part number j. This column lists the electrical hazard class and group used for cargo when determining requirements equi A number of electrical hazard class and group assignments are based upon that which appears in ‘‘Classification Gases, Liqui The I-B electrical hazard does not apply to weather deck locations (see 46 CFR Part 111) for inorganic acids: Chlorosulfonic ac Abbreviations used in the Table: Abbreviations for Noxious Liquid cargoes: Footnotes for Specific Cargoes: 1. Special applicability: 2. Benzene containing cargoes. 3. Diammonium salt of Zinc ethylenediaminetetraacetic acid solution; Tetraethylenepentamine. 4. 2,4-Dichlorophenol. 5. Reserved. 6. Diphenylmethane diisocyanate; Hexamethylene Isophorone Polymethylene polyphenyl isocyanate; Tolu 7. Maleic anhydride; Nitroethane; Nitroethane, 1-Nitropropane mixtures; 1- or 2-Nitropropane; Nitropropane, Nitroethane mixture 8. Xylenes. either type of foam system unless the dry chemical is listed as an alternative or substitution approved by Comman chapter. trical Equipment’’, Publication NMAB 353–5, National Academy Press, 1982, when not appearing in NFPA 497M, ‘‘Manual for Classif ment in Hazardous (Classified) Locations.’’ less); Oleum; Phosphoric acid; Sulfuric acid. struction for this cargo. be kept dry. diisocyanate (2,2,4- and 2,4,4- isomers). [USCG 2000–7079, 65 FR 67196, Nov. 8, 2000]

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TABLE 2 TO PART 153—CARGOES NOT Cargoes Pollution REGULATED UNDER SUBCHAPTERS D Category OR O OF THIS CHAPTER WHEN CAR- Glycine, sodium salt solution ...... III RIED IN BULK ON NON-OCEANGOING Hexamethylenediamine adipate solution ...... D BARGES N-(Hydroxyethyl)ethylenediamine triacetic acid, trisodium salt solution ...... D The cargoes listed in this table are not reg- Kaolin clay solution ...... III ulated under subchapter D or O of this title Kaolin slurry ...... III Kraft pulping liquor (free alkali content, 1% or when carried in bulk on non-oceangoing less) including: Black, Green, or White liquor # barges. Category A, B, or C noxious liquid Lignin liquor (free alkali content, 1% or less) # substance (NLS) cargo, as defined in § 153.2 of including:. this chapter, listed in this table, or any mix- Ammonium lignosulfonate solution ..... III ture containing one or more of these cargoes, Calcium lignosulfonate solution ...... III must be carried under this subchapter if car- Sodium lignosulfonate solution ...... III Lignin sulfonic acid, sodium salt solution, see ried in bulk on an oceangoing ship. Require- also Lignin liquor or Sodium lignosulfonate ments for Category D NLS cargoes and mix- solution ...... III tures of non-NLS cargoes with Category D Magnesium chloride solution ...... III NLS cargoes are in 33 CFR part 151. Magnesium hydroxide slurry ...... III Milk ...... III Molasses ...... III Cargoes Pollution Category Molasses residue (from fermentation) ...... [III] Naphthenic acid, sodium salt solution ...... [A] 2-Amino-2-hydroxymethyl-1,3-propanediol solu- Noxious liquid, N.F., (1) n.o.s. (‘‘trade name’’ tion ...... III contains ‘‘principle components’’) ST 1, Cat Ammonium hydrogen phosphate solution ...... D A (if non-flammable or non-combustible) ...... A Ammonium lignosulfonate solution, see also Noxious liquid, N.F., (3) n.o.s. (‘‘trade name’’ Lignin liquor ...... III contains ‘‘principle components’’) ST 2, Cat Ammonium nitrate solution (45% or less) ...... D A (if non-flammable or non-combustible) ...... A Ammonium nitrate, Urea solution (2% or less Noxious liquid, N.F., (5) n.o.s. (‘‘trade name’’ NH 3), see also Urea, Ammonium nitrate so- contains ‘‘principle components’’) ST 2, Cat lution (2% or less NH3) ...... D B (if non-flammable or non-combustible) ...... B Ammonium phosphate, Urea solution, see also Noxious liquid, N.F., (6) n.o.s. (‘‘trade name’’ Urea, Ammonium phosphate solution ...... D contains ‘‘principle components’’) ST 2, Cat Ammonium polyphosphate solution ...... D B, mp. equal to or greater than 15 deg. C (if Ammonium sulfate solution (20% or less) ...... D non-flammable or non-combustible) ...... B Ammonium thiosulfate solution (60% or less) ... C Noxious liquid, N.F., (9) n.o.s. (‘‘trade name’’ Apple juice ...... III contains ‘‘principle components’’) ST 3, Cat Calcium bromide solution ...... III A (if non-flammable or non-combustible) ...... A Calcium carbonate slurry ...... III Noxious liquid, N.F., (11) n.o.s. (‘‘trade name’’ Calcium chloride solution ...... III contains ‘‘principle components’’) ST 3, Cat Calcium hydroxide slurry ...... D B (if non-flammable or non-combustible) ...... B Calcium lignosulfonate solution, see also Noxious liquid, N.F., (12) n.o.s. (‘‘trade name’’ Lignin liquor ...... III contains ‘‘principle components’’) ST 3, Cat Calcium nitrate, Magnesium nitrate, Potassium B, mp. equal to or greater than 15 deg. C (if chloride solution ...... III Caramel solutions ...... III non-flammable or non-combustible) ...... B Chlorinated paraffins (C14–C17) (with 52% Noxious liquid, N.F., (15) n.o.s. (‘‘trade name’’ Chlorine) ...... III contains ‘‘principle components’’) ST 3, Cat 2-Chloro-4-ethylamino-6-isopropylamino-5-tri- C (if non-flammable or non-combustible) ...... C azine solution ...... # Noxious liquid, n.o.s. (17) (‘‘trade name,’’ con- Choline chloride solution ...... D tains ‘‘principal components’’), Category D (if Clay slurry ...... III non-flammable or non-combustible) ...... D Coal slurry ...... III Non-noxious liquid, n.o.s. (18) (‘‘trade name,’’ Dextrose solution, see Glucose solution. contains ‘‘principal components’’), Appendix Diethylenetriamine pentaacetic acid, III (if non-flammable or non-combustible) ...... III pentasodium salt solution ...... III Pentasodium salt of Diethylenetriamine penta- 1,4-Dihydro-9,10-dihydroxy anthracene, diso- acetic acid solution, see Diethylenetriamine dium salt solution ...... D pentaacetic acid, pentasodium salt solution.. Dodecenylsuccinic acid, dipotassium salt solu- Polyaluminum chloride solution ...... III tion ...... D Potassium chloride solution (10% or more)(see Drilling brine (containing Calcium, Potassium, also the drilling brines entry) ...... III or Sodium salts) (see also Potassium chlo- Sewage sludge, treated (treated so as to pose ride solution (10% or more)) ...... III no additional decompositional and fire haz- Drilling brine (containing Zinc salts) ...... B ard; stable, non-corrosive, non-toxic, non- Drilling mud (low toxicity) (if non-flammable flammable) ...... # and non-combustible) ...... [III] Silica slurry ...... [III] Ethylenediaminetetraacetic acid, tetrasodium Sludge, treated (treated so as to pose no addi- salt solution ...... D tional decompositional and fire hazard; sta- Ethylene-Vinyl acetate copolymer (emulsion) ... III ble, non-corrosive, non-toxic, non-flammable) # Ferric hydroxyethylethylenediamine triacetic Sodium acetate, Glycol, Water mixture (con- acid, trisodium salt solution ...... D taining 1% or less, Sodium hydroxide) (if Fish solubles (water based fish meal extracts) III non-flammable or non-combustible) ...... # Fructose solution ...... # Sodium aluminosilicate slurry ...... III Glucose solution ...... III Sodium carbonate solution ...... D

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Pollution APPENDIX I TO PART 153 [RESERVED] Cargoes Category

Sodium lignosulfonate solution, see also Lignin APPENDIX II TO PART 153—METRIC liquor ...... III UNITS USED IN PART 153 Sodium naphthenate solution (free alkali content, 3% or less), see Naphthenic acid, so- Abbre- Equivalent to dium salt solution.. Parameter Metric (SI unit) viation English or com- Sodium poly(4+)acrylate solution ...... III mon metric Sodium silicate solution ...... C Force ...... Newton ...... N ...... 0.225 lbs. Sodium sulfate solution ...... III Length ...... Meter ...... m ...... 39.37 in. Sorbitol solution ...... III Centimeter ...... cm ...... 3937 in. Sulfonated polyacrylate solution ...... III Pressure ...... Pascal ...... Pa ...... 1.450×10¥4 lbs/ Tetrasodium salt of in 2. Ethylenediaminetetraaacetic acid solution, Kilo-Pascal kPa ..... 0.145 lbs/in 2. see Ethylenediaminetetraacetic acid, (1,000 tetrasodium salt solution. Pascals). Titanium dioxide slurry ...... III Kilo-Pascal ...... kPa ..... 1.02×10¥2 kg/ 1,1,1-Trichloroethane ...... C cm2. 1,1,2-Trichloro-1,2,2-trifluoroethane ...... C ...... do ...... kPa ..... 1×10 3 N/m 2. Trisodium salt of N-(Hydroxy- Temperature Degree Celsius °C ...... 5/9 (°F–32). ethyl)ethylenediamine triacetic acid solution, Viscosity ...... milli-Pascal sec- mPa. 1.0 centipoise. see N-(Hydroxyethyl)ethylenediamine ond. sec. triacetic acid, trisodium salt solution.. Volume ...... Cubic meter ..... m 3 ...... 264 gallons Urea, Ammonium mono- and di-hydrogen (gal). phosphate, Potassium chloride solution ...... D ...... do ...... m 3 ...... 35.3 ft3. Urea, Ammonium nitrate solution (2% or less NH3), see also Ammonium nitrate, Urea solution (2% or less) ...... D [CGD 73–96, 42 FR 49027, Sept. 26, 1977, as Urea, Ammonium phosphate solution, see also amended by CGD 78–128, 47 FR 21212, May 17, Ammonium phosphate, Urea solution ...... D Urea solution ...... III 1982; CGD 81–101, 52 FR 7799, Mar. 12, 1987. Re- Vanillan black liquor (free alkali content, 1% or designated by CGD 92–100, 59 FR 17045, Apr. less) ...... # 11, 1994] Vegetable protein solution (hydrolysed) ...... III Water ...... III Zinc bromide, Calcium bromide solution, see PART 154—SAFETY STANDARDS Drilling brine (containing Zinc salts). FOR SELF-PROPELLED VESSELS

Explanation of Symbols: As used in this table, the following CARRYING BULK LIQUEFIED stand for: GASES A, B, C, D—NLS Category of Annex II of MARPOL 73/78. I—Considered an ‘‘oil’’ under Annex I of MARPOL 73/78. III—Appendix III of Annex II (non-NLS cargoes) of MARPOL Subpart A—General 73/78. LFG—Liquefied flammable gas. Sec. #—No determination of NLS status. For shipping on an oceangoing vessel, see 46 CFR 153.900(c). 154.1 Incorporation by reference. [ ]—A NLS category in brackets indicates that the product is 154.3 Purpose. provisionally categorized and that further data are necessary 154.5 Applicability. to complete the evaluation of its pollution hazards. Until the hazard evaluation is completed, the pollution category as- 154.7 Definitions, acronyms, and terms. signed is used. 154.9 Issuance of documents. @The NLS category has been assigned by the U.S. Coast Guard, in absence of one assigned by the IMO. The category 154.12 Existing gas vessel: Endorsements is based upon a GESAMP Hazard Profile or by analogy to a and requirements. closely related product having an NLS assigned. 154.15 U.S. flag vessel: Endorsement appli- Abbreviations for Noxious liquid Cargoes: cation. N.F.—non-flammable (flash point greater than 60 degrees C (140 degrees F) cc). 154.17 U.S. flag vessel: Certificate of Inspec- n.o.s.—not otherwise specified. tion endorsement. ST—Ship type. 154.19 U.S. flag vessel: IMO certificate Cat—Pollution category. issuance. 154.22 Foreign flag vessel: Certificate of [CGD 88–100, 54 FR 43584, Oct. 26, 1989; CGD Compliance endorsement application. 92–100, 59 FR 17044, Apr. 11, 1994, as amended by CGD 94–900, 59 FR 45142, Aug. 31, 1994; CGD 154.24 Foreign flag vessel: IMO Certificate. 94–902, 60 FR 34043, June 29, 1995; CGD 95–900, 154.30 [Reserved] 60 FR 34052, June 29, 1995; USCG 2000–7079, 65 154.32 Equivalents. FR 67213, Nov. 8, 2000] 154.34 Special approval: Requests. 154.36 Correspondence and vessel information: Submission. 154.40 Right of appeal.

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Subpart B—Inspections and Tests 154.410 Cargo tank sloshing loads. 154.411 Cargo tank thermal loads. EXAMINATION REQUIREMENTS FOR FOREIGN 154.412 Cargo tank corrosion allowance. FLAG VESSELS INTEGRAL TANKS 154.150 Examination required for a Certifi- cate of Compliance. 154.418 General. 154.151 Procedures for having the Coast 154.419 Design vapor pressure. Guard examine a vessel for a Certificate 154.420 Tank design. of Compliance. 154.421 Allowable stress. MEMBRANE TANKS Subpart C—Design, Construction, and Equipment 154.425 General. 154.426 Design vapor pressure. HULL STRUCTURE 154.427 Membrane tank system design. 154.428 Allowable stress. 154.170 Outer hull steel plating. 154.429 Calculations. 154.172 Contiguous steel hull structure. 154.430 Material test. 154.174 Transverse contiguous hull struc- 154.431 Model test. ture. 154.432 Expansion and contraction. 154.176 Longitudinal contiguous hull structure. SEMI-MEMBRANE TANKS 154.178 Contiguous hull structure: Heating system. 154.435 General. 154.180 Contiguous hull structure: Welding 154.436 Design vapor pressure. procedure. INDEPENDENT TANK TYPE A 154.182 Contiguous hull structure: Produc- tion weld test. 154.437 General. 154.188 Membrane tank: Inner hull steel. 154.438 Design vapor pressure. 154.195 Aluminum cargo tank: Steel enclo- 154.439 Tank design. sure. 154.440 Allowable stress.

SHIP SURVIVAL CAPABILITY AND CARGO TANK INDEPENDENT TANK TYPE B LOCATION 154.444 General. 154.200 Stability requirements: General. 154.445 Design vapor pressure. 154.235 Cargo tank location. 154.446 Tank design. 154.447 Allowable stress. SHIP ARRANGEMENTS 154.448 Calculations. 154.449 Model test. 154.300 Segregation of hold spaces from other spaces. INDEPENDENT TANK TYPE C AND PROCESS 154.305 Segregation of hold spaces from the PRESSURE VESSELS sea. 154.450 General. 154.310 Cargo piping systems. 154.451 Design vapor pressure. 154.315 Cargo pump and cargo compressor 154.452 External pressure. rooms. 154.453 Failure to meet independent tank 154.320 Cargo control stations. type C standards. 154.325 Accommodation, service, and control spaces. SECONDARY BARRIER 154.330 Openings to accommodation, service, or control spaces. 154.459 General. 154.340 Access to tanks and spaces in the 154.460 Design criteria. cargo area. INSULATION 154.345 Air locks. 154.350 Bilge and ballast systems in the 154.465 General. cargo area. 154.466 Design criteria. 154.355 Bow and stern loading piping. 154.467 Submission of insulation informa- 154.356 Cargo emergency jettisoning piping. tion.

CARGO CONTAINMENT SYSTEMS SUPPORT SYSTEM 154.401 Definitions. 154.470 General. 154.471 Design criteria. 154.405 Design vapor pressure (Po) of a cargo tank. 154.476 Cargo transfer devices and means. 154.406 Design loads for cargo tanks and fix- CARGO AND PROCESS PIPING SYSTEMS tures: General. 154.407 Cargo tank internal pressure head. 154.500 Cargo and process piping standards. 154.408 Cargo tank external pressure load. 154.503 Piping and piping system compo- 154.409 Dynamic loads from vessel motion. nents: Protection from movement.

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154.506 Mechanical expansion joint: Limits 154.708 Cargo boil-off as fuel: Valves. in a piping system. 154.709 Cargo boil-off as fuel: Gas detection 154.512 Piping: Thermal isolation. equipment. 154.514 Piping: Electrical bonding. 154.516 Piping: Hull protection. CARGO VENT SYSTEMS 154.517 Piping: Liquid pressure relief. 154.801 Pressure relief systems. 154.519 Piping relief valves. 154.802 Alternate pressure relief settings. 154.520 Piping calculations. 154.804 Vacuum protection. 154.522 Materials for piping. 154.805 Vent masts. 154.524 Piping joints: Welded and screwed 154.806 Capacity of pressure relief valves. couplings. 154.526 Piping joints: Flange connection. ATMOSPHERIC CONTROL IN CARGO 154.528 Piping joints: Flange type. CONTAINMENT SYSTEMS 154.530 Valves: Cargo tank MARVS 69 kPa 154.901 Atmospheric control within cargo gauge (10 psig) or lower. tanks and cargo piping systems. 154.532 Valves: Cargo tank MARVS greater 154.902 Atmospheric control within hold and than 69 kPa gauge (10 psig). interbarrier spaces. 154.534 Cargo pumps and cargo compressors. 154.903 Inert gas systems: General. 154.536 Cargo tank gauging and measuring 154.904 Inert gas system: Controls. connections. 154.906 Inert gas generators. 154.538 Cargo transfer connection. 154.908 Inert gas generator: Location. 154.540 Quick-closing shut-off valves: Emer- 154.910 Inert gas piping: Location. gency shut-down system. 154.912 Inerted spaces: Relief devices. 154.544 Quick-closing shut-off valves. 154.546 Excess flow valve: Closing flow. ELECTRICAL 154.548 Cargo piping: Flow capacity. 154.550 Excess flow valve: Bypass. 154.1000 Applicability. 154.1002 Definition. CARGO HOSE 154.1005 Equipment approval. 154.1010 Electrical equipment in gas-dan- 154.551 Cargo hose: General. gerous space or zone. 154.552 Cargo hose: Compatibility. 154.1015 Lighting in gas-dangerous space. 154.554 Cargo hose: Bursting pressure. 154.1020 Emergency power. 154.556 Cargo hose: Maximum working pressure. FIREFIGHTING 154.558 Cargo hose: Marking. 154.560 Cargo hose: Prototype test. Firefighting System: Exterior Water Spray 154.562 Cargo hose: Hydrostatic test. 154.1105 Exterior water spray system: Gen- eral. MATERIALS 154.1110 Areas protected by system. 154.605 Toughness test. 154.1115 Discharge. 154.610 Design temperature not colder than 154.1120 Nozzles. 0 °C (32 °F). 154.1125 Pipes, fittings, and valves. 154.615 Design temperature below 0 °C (32 154.1130 Sections. °F) and down to ¥55 °C (¥67 °F). 154.1135 Pumps. 154.620 Design temperature below ¥55 °C (¥67 °F) and down to ¥165 °C (¥265 °F). Firefighting System: Dry Chemical 154.625 Design temperature below 0 °C (32 154.1140 Dry chemical system: General. °F) and down to ¥165 °C (¥265 °F). 154.1145 Dry chemical supply. 154.630 Cargo tank material. 154.1150 Distribution of dry chemical. 154.1155 Hand hose line: Coverage. CONSTRUCTION 154.1160 Monitor coverage of system. 154.650 Cargo tank and process pressure ves- 154.1165 Controls. sel welding. 154.1170 Hand hose line: General. 154.655 Stress relief for independent tanks CARGO AREA: MECHANICAL VENTILATION type C. SYSTEM 154.660 Pipe welding. 154.665 Welding procedures. 154.1200 Mechanical ventilation system: General. CARGO PRESSURE AND TEMPERATURE CONTROL 154.1205 Mechanical ventilations system: 154.701 Cargo pressure and temperature con- Standards. trol: General. 154.1210 Hold space, void space, cofferdam, 154.702 Refrigerated carriage. and spaces containing cargo piping. 154.703 Methane (LNG). INSTRUMENTATION 154.705 Cargo boil-off as fuel: General. 154.706 Cargo boil-off as fuel: Fuel lines. 154.1300 Liquid level gauging system: Gen- 154.707 Cargo boil-off as fuel: Ventilation. eral.

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154.1305 Liquid level gauging system: Stand- 154.1808 Limitations in the endorsement. ards. 154.1809 Loading and stability manual. 154.1310 Closed gauge shut-off valve. 154.1810 Cargo manual. 154.1315 Restricted gauge excess flow valve. 154.1812 Operational information for ter- 154.1320 Sighting ports, tubular gauge glass- minal personnel. es, and flat plate type gauge glasses. 154.1814 Cargo information cards. 154.1325 Liquid level alarm system: All 154.1816 Cargo location plan. cargo tanks. 154.1818 Certification of inhibition. 154.1330 Liquid level alarm system: Inde- 154.1820 Shipping document. pendent tank type C. 154.1822 Shipping document: Copy for trans- 154.1335 Pressure and vacuum protection. fer terminal. 154.1340 Temperature measuring devices. 154.1824 Obstruction of pumproom 154.1345 Gas detection. ladderways. 154.1350 Flammable gas detection system. 154.1826 Opening of cargo tanks and cargo 154.1360 Oxygen analyzer. sampling. 154.1365 Audible and visual alarms. 154.1828 Spaces containing cargo vapor: 154.1370 Pressure gauge and vacuum gauge Entry. marking. 154.1830 Warning sign. 154.1375 Readout for temperature measuring 154.1831 Persons in charge of transferring device: Marking. liquid cargo in bulk or preparing cargo tanks. SAFETY EQUIPMENT 154.1834 Cargo transfer piping. 154.1400 Safety equipment: All vessels. 154.1836 Vapor venting as a means of cargo 154.1405 Respiratory protection. tank pressure and temperature control. 154.1410 Decontamination shower. 154.1838 Discharge by gas pressurization. 154.1415 Air compressor. 154.1840 Protective clothing. 154.1420 Stretchers and equipment. 154.1842 Cargo system: Controls and alarms. 154.1430 Equipment locker. 154.1844 Cargo tanks: Filling limits. 154.1435 Medical first aid guide. 154.1846 Relief valves: Changing set pres- 154.1440 Antidotes. sure. 154.1848 Inerting. Subpart D—Special Design and Operating 154.1850 Entering cargo handling spaces. Requirements 154.1852 Air breathing equipment. 154.1854 Methane (LNG) as fuel. 154.1700 Purpose. 154.1858 Cargo hose. 154.1702 Materials of construction. 154.1860 Integral tanks: Cargo colder than 154.1705 Independent tank type C. ¥10 °C (14 °F). 154.1710 Exclusion of air from cargo tank 154.1862 Posting of speed reduction. vapor spaces. 154.1864 Vessel speed within speed reduc- 154.1715 Moisture control. tion. 154.1720 Indirect refrigeration. 154.1866 Cargo hose connection: Transfer- 154.1725 Ethylene oxide. ring cargo. 154.1730 Ethylene oxide: Loading and off- 154.1868 Portable blowers in personnel ac- loading. cess openings. 154.1735 Methyl acetylene-propadiene mix- 154.1870 Bow and stern loading. ture. 154.1872 Cargo emergency jettisoning. 154.1740 Vinyl chloride: Inhibiting and APPENDIX A TO PART 154—EQUIVALENT inerting. STRESS 154.1745 Vinyl chloride: Transferring oper- APPENDIX B TO PART 154—STRESS ANALYSES ations. DEFINITIONS 154.1750 Butadiene or vinyl chloride: Refrig- eration system. AUTHORITY: 46 U.S.C. 3703, 9101; Depart- 154.1755 Nitrogen. ment of Homeland Security Delegation No. 154.1760 Liquid ammonia. 0170.1. SOURCE: CGD 74–289, 44 FR 26009, May 3, Subpart E—Operations 1979, unless otherwise noted.

154.1800 Special operating requirements EDITORIAL NOTE: Nomenclature changes to under Part 35 of this chapter. part 154 appear at 60 FR 50466, Sept. 29, 1995, 154.1801 Certificates, letters, and endorse- 61 FR 50732, Sept. 27, 1996, and 74 FR 49235, ments: U.S. flag vessels. Sept. 25, 2009. 154.1802 Certificates, letters, and endorsements: Foreign flag vessels. 154.1803 Expiration of Certificates of Com- Subpart A—General pliance. 154.1804 Document posted in wheelhouse. SOURCE: CGD 77–069, 52 FR 31626, Aug. 21, 154.1806 Regulations on board. 1987, unless otherwise noted.

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§ 154.1 Incorporation by reference. Code For Existing Ships Carrying Liquefied Gases in Bulk, 1976 (a) Certain materials are incor- Medical First Aid Guide for Use in Accidents porated by reference into this part Involving Dangerous Goods with approval of the Director of the Federal Register in accordance with 5 Underwriters Laboratories, Inc. U.S.C. 552(a). The Office of the Federal 12 Laboratory Drive, Research Triangle Register publishes a list ‘‘Material Ap- Park, NC 27709–3995 proved for Incorporation by Ref- UL No. 783–79 Standard for Safety, Electric erence,’’ which appears in the Finding Flashlights for Use in Hazardous Loca- Aids section of this volume. To enforce tions, Class 1, Groups C and D, 1979. any edition other than the one listed in [CGD 77–069, 52 FR 31626, Aug. 21, 1987, as paragraph (b) of this section, notice of amended by CGD 82–042, 53 FR 17705, May 18, change must be published in the FED- 1988; CGD 82–042, 53 FR 18949, May 25, 1988; CGD 88–070, 53 FR 34535, Sept. 7, 1988; CGD 96– ERAL REGISTER and the material made 041, 61 FR 50732, Sept. 27, 1996; CGD 97–057, 62 available. All approved material is on FR 51048, Sept. 30, 1997; USCG–1999–5151, 64 file at the Commandant (CG–522), U.S. FR 67183, Dec. 1, 1999; USCG–2000–7790, 65 FR Coast Guard, 2100 2nd St., SW., Stop 58463, Sept. 29, 2000; 69 FR 18803, Apr. 9, 2004] 7126, Washington, DC 20593–7126, or at the National Archives and Records Ad- § 154.3 Purpose. ministration (NARA). For information The purpose of this part is to pre- on the availability of this material at scribe rules for new and existing gas NARA, call 202–741–6030, or go to: http:// vessels. www.archives.gov/federallregister/ codeloflfederallregulations/ § 154.5 Applicability. ibrllocations.html. This part applies to each self-pro- (b) The materials approved for incor- pelled vessel that has on board bulk poration by reference in this part are: liquefied gases as cargo, cargo residue or vapor, except subpart C does not American Bureau of Shipping (ABS) apply if the vessel meets § 154.12 (b), (c), ABS Plaza, 16855 Northchase Drive, Houston, or (d). TX 77060 Rules for Building and Classing Steel Ves- § 154.7 Definitions, acronyms, and sels, 1981 terms.

American National Standards Institute As used in this part: ‘‘A’’ Class Division means a division 11 West 42nd Street, New York, NY 10036 as defined in Regulation 3 of Chapter ANSI Z89.1–69 Safety Requirements for In- II-2 of the 1974 Safety Convention. dustrial Head Protection, 1969 Accommodation spaces means public ANSI Z87.1–79 Practice for Occupational and spaces, corridors, lavatories, cabins, of- Educational Eye and Face Protection, 1979 fices, hospitals, cinemas, game and American Society for Testing and Materials hobby rooms, pantries containing no (ASTM) cooking appliances, and spaces used in 100 Barr Harbor Drive, West Conshohocken, a similar fashion. PA 19428–2959. Boiling point means the temperature ASTM A 20/A 20M–97a, Standard Specifica- at which a substance’s vapor pressure tion for General Requirements for Steel is equal to the atmospheric barometric Plates for Pressure Vessels—154.610 pressure. ASTM F 1014–92, Standard Specification for Breadth (B) means the maximum Flashlights on Vessels—154.1400 width of the vessel in meters measured NOTE: All other documents referenced in amidships to the molded line of the this part are still in effect. frame in a ship with a metal shell and to the outer surface of the hull in a International Maritime Organization ship with a shell of any other material. Publications Section, 4 Albert Embankment, Cargo area means that part of the London SE1 7SR, United Kingdom vessel that contains the cargo contain- Resolution A.328(IX), Code for the Construc- ment system, cargo pump rooms, cargo tion and Equipment of Ships Carrying Liq- compressor rooms, and the deck areas uefied Gases in Bulk, 1976 over the full beam and the length of

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the vessel above them, but does not in- Flammable cargoes includes the fol- clude the cofferdams, ballast spaces, or lowing liquefied gases from Table 4 void spaces at the after end of the (follows § 154.1872): aftermost hold space or the forward Acetaldehyde end of the forwardmost hold space. Butadiene Cargo containment system means the Butane arrangement for containment of the Butylene cargo including a primary and sec- Dimethylamine ondary barrier, associated insulation Ethane and any intervening spaces, and adja- Ethylamine cent structure that is necessary for the Ethyl chloride Ethylene support of these elements. Ethylene oxide Cargo service space means space with- Methane (LNG) in the cargo area that is more than 2 Methyl acetylene-propadiene mixture m2 (21.5 ft.2) in deck area and used for Methyl bromide work shops, lockers, or store rooms. Methyl chloride Cargo tank means the liquid tight Propane shell that is the primary container of Propylene the cargo. Vinyl chloride Certificate of Compliance means a cer- Gas-dangerous space includes the fol- tificate issued by the Coast Guard to a lowing spaces: foreign flag vessel after it is examined (a) A space in the cargo area without and found to comply with regulations arrangements to provide a safe atmos- in this chapter. phere at all times. Cofferdam means the isolating space (b) An enclosed space outside the between two adjacent steel bulkheads cargo area through which any piping or decks, which could be a void space that may contain liquid or gaseous or a ballast space. cargo passes, or within which that pip- Contiguous hull structure includes the ing terminates, without arrangements inner deck, the inner bottom plating, to prevent gas from escaping into the longitudinal bulkhead plating, trans- space. verse bulkhead plating, floors, webs, (c) A cargo containment system and stringers, and attached stiffeners. cargo piping. Control space means those spaces in (d) A hold space where cargo is car- which the vessel’s radio, main navi- ried in a cargo containment system: gating equipment, or the emergency (1) With a secondary barrier; or source of power is located or in which (2) Without a secondary barrier. the fire control equipment, other than (e) A space separated from a hold firefighting control equipment under space under paragraph (d)(1) of this def- § 154.1140 to § 154.1170, is centralized. inition by a single gastight boundary. Design temperature means the min- (f) A cargo pumproom and a cargo imum cargo temperature the Coast compressor room. Guard allows for loading, unloading, or (g) A zone on the weather deck or a carriage. semi-enclosed space on the weather Design vapor pressure (Po) means the deck within 3.05 m (10 ft) of any cargo maximum gauge pressure at the top of tank outlet, gas or vapor outlet, cargo the cargo tank for the design of the pipe flange, cargo valve, or of en- cargo tank. trances and ventilation openings to a Document means a Certificate of In- cargo pump room or a cargo com- spection for a U.S. flag vessel or a Cer- pressor room. tificate of Compliance for a foreign flag (h) Except for existing gas vessels, vessel. the weather deck over the cargo area Existing gas vessel means a self-pro- and 3.05 m (10 ft) forward and aft of the pelled vessel that— cargo area on the weather deck to 2.4 (a) Is delivered on or before October m (8 ft) above the weather deck. 31, 1976; or (i) A zone within 2.4 m (8 ft) of the (b) Is delivered between October 31, outer surface of a cargo containment 1976 and June 30, 1980, and is not a new system where the surface is exposed to gas vessel. the weather.

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(j) An enclosed or semi-enclosed Insulation space means a space, that space in which there is piping con- could be an interbarrier space, occu- taining cargo, except those— pied wholly or in part by insulation. (1) With gas sampling lines for gas Integral tank means a cargo tank that detection equipment under § 154.1350(n); is a structural part of the vessel’s hull or and is influenced in the same manner (2) In which boil-off gas is used as and by the same loads that stress the fuel under § 154.703. adjacent hull structure. (k) A space for storage of cargo Interbarrier space means the space be- hoses. tween a primary and a secondary bar- (l) An enclosed or semi-enclosed rier, with or without insulation or space having an opening into any gas- other material. dangerous space or zone. Length (L) is ninety-six percent of the Gas-safe space means a space that is total length in meters on a waterline not a gas-dangerous space. at eighty-five percent of the least Hold space means the space enclosed molded depth measured from the top of by the vessel’s structure in which there the keel or the length from the foreside is a cargo containment system. of the stem to the axis of the rudder IMO stands for the lnternational stock on the waterline, whichever is Maritime Organization. greater. In vessels having a rake of IMO Certificate means a Certificate of keel, the waterline is parallel to the Fitness for the Carriage of Liquefied design waterline. Gases in Bulk issued under the IMO— Liquefied gas means a cargo having a (a) ‘‘Code for the Construction and vapor pressure of 172 kPa (25 psia) or ° ° Equipment of Ships Carrying Liquefied more at 37.8 C (100 F). Gases in Bulk’’, adopted November 12, MARVS stands for the Maximum Al- 1975 by Assembly Resolution A.328(IX), lowable Relief Valve Setting. as amended; Membrane tank is a cargo tank that is (b) ‘‘Code for Existing Ships Carrying not self-supporting and consists of a Liquefied Gases in Bulk’’, adopted No- thin layer (membrane) supported vember 12, 1975, as amended; or through insulation by the adjacent hull (c) ‘‘Recommendations Concerning structure. Ships Not Covered by the Code for the New gas vessel means a self-propelled Construction and Equipment of Ships vessel that— Carrying Liquefied Gases in Bulk’’, (a) Is constructed under a building (Resolution A.328(IX)), adopted Novem- contract awarded after October 31, 1976; ber 12, 1975 by Assembly Resolution (b) In the absence of a building con- A.329(IX). tract, has a keel laid or is at a similar Independent tank is a cargo tank that stage of construction after December is permanently affixed to the vessel, is 31, 1976; self-supporting, and is not part of the (c) Is delivered after June 30, 1980; or hull or essential to the strength or in- (d) Has undergone a major conversion tegrity of the hull. for which— Independent tank type A is an inde- (1) The building contract is awarded pendent cargo tank designed primarily after October 31, 1976; using classification society classical (2) In the absence of a building con- ship structural analysis procedures. tract, conversion is begun after Decem- Independent tank type B is an inde- ber 31, 1976; or pendent cargo tank designed from (3) Conversion is completed after model tests, refined analytical tools, June 30, 1980. and analysis methods to determine Primary barrier means the inner stress levels, fatigue life, and crack boundary that contains the cargo when propagation characteristics. the cargo containment system includes Independent tank type C (pressure two boundaries. tank) is an independent cargo tank Process pressure vessel means a pres- meeting pressure vessel criteria where sure vessel that is used in a relique- the dominant stress producing load is faction, cargo heating, or other system design vapor pressure. that processes cargo.

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Remote group alarm means an audible vapor above the liquid, expressed in and visual alarm that alerts when an kPa (psia), at a specific temperature. alarm condition exists but does not Void space means an enclosed space in identify that condition. the cargo area outside of the cargo con- Secondary barrier means the liquid re- tainment system, except a hold space, sisting outer boundary of a cargo con- ballast space, fuel oil tank, cargo pump tainment system when the cargo con- or compressor room, or any space used tainment system includes two bound- by personnel. aries. 1974 Safety Convention stands for the Semi-membrane tank is a cargo tank International Convention on Safety of that is not self-supporting and that can Life at Sea, 1974, done at London, No- expand and contract due to thermal, vember 1, 1974. hydrostatic, and pressure loadings. It consists of flat surfaces, supported § 154.9 Issuance of documents. through insulation by the adjacent hull The Coast Guard issues an endorsed structure, and shaped corners that con- Certificate of Inspection to a U.S. flag nect the flat surfaces. vessel or an endorsed Certificate of Service space means a space outside Compliance to a foreign flag vessel the cargo area that is used for a galley, that meets this part. pantry containing cooking appliances, locker or store room, workshop except § 154.12 Existing gas vessel: Endorse- those in machinery spaces, and similar ments and requirements. spaces and trunks to those spaces. (a) Except an existing gas vessel Shut-off valve is a valve that closes a under paragraph (b), (c), or (d) of this pipeline and provides nominal metal to section, an existing gas vessel must metal contact between the valve oper- meet subpart C of this part if the ating parts, including the disc and owner desires a document endorsed for gate, and the valve body. the carriage of a cargo listed in Table Specific gravity (p) means the ratio of 4 (follows § 154.1872). the density of the cargo at the design (b) If an existing gas vessel is issued temperature to the density of water at a document by the Coast Guard before 4 °C (39 °F). November 1, 1987 that is endorsed for Tank cover is the structure protecting the carriage of a cargo listed in Table those parts of the cargo containment 4 (follows § 154.1872), and the owner de- system that protrude through the sires the same endorsement on a re- weather deck and providing continuity issued document, the vessel must— to the deck structure. Tank dome means the uppermost por- (1) Continue to meet the same design tion of the cargo tank. For below deck and construction standards under cargo containment systems, it means which the Coast Guard issued the origi- the uppermost portion of the cargo nal document; and tank that protrudes through the (2) Meet paragraph (e) of this section. weather deck or through the tank (c) If an existing gas vessel is issued cover. a document by the Coast Guard before Toxic cargoes includes the following November 1, 1987 that is endorsed for liquefied gases from Table 4 (follows the carriage of a cargo listed in Table § 154.1872): 4 (follows § 154.1872), and the owner desires an endorsement for a different Acetaldehyde cargo listed in that table, the vessel Ammonia, anhydrous must— Dimethylamine Ethylamine (1) Continue to meet the same design Ethyl chloride and construction standards under Ethylene oxide which the Coast Guard issued the origi- Methyl bromide nal document; Methyl chloride (2) Meet paragraph (e) of this section; Sulfur dioxide (3) Meet subpart D for the different Vinyl chloride cargo; and Vapor pressure means the absolute (4) Meet any additional requirements equilibrium pressure of the saturated of this part that the Commandant (CG–

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522) determines to be necessary for dation, service, or control space by a safety. steel door that— (d) If an existing gas vessel does not (i) Is watertight when tested with a meet paragraph (b) or (c) of this sec- firehose at not less than 207 kPa gauge tion and the owner desires a document (30 psig); endorsed for the carriage of a cargo (ii) Has a means to self-close and does listed in Table 4 (follows § 154.1872), the not have latches or other devices de- vessel must— signed to hold it open; and (1) Have a letter from the Coast (iii) Has an audible and visual alarm Guard dated before November 1, 1987 on both sides of the door which is actu- stating that— ated when the door is open. (i) Review of the vessel’s plans for (24) Section 154.910. the carriage of that cargo is completed; (25) Section 154.912. or (26) Sections 154.1110 through 154.1130, (ii) The vessel’s IMO Certificate en- except §§ 154.1115(b), 154.1120(b), and dorsed for the carriage of that cargo is 154.1125 (c) and (f). accepted; (2) Meet the plans that were reviewed (27) Section 154.1145, except an exist- and marked ‘‘Examined’’ or ‘‘Ap- ing gas vessel with a cargo carrying ca- 3 3 proved’’ by the Coast Guard, or meet pacity of less than 2500 m (88,200 ft ) the standards under which the IMO may have only one self-contained dry Certificate was issued; chemical storage unit if that unit— (3) Meet paragraph (e) of this section; (i) is installed before November 1, and 1987; and (4) Meet any additional requirements (ii) Has the capacity to meet § 154.1145 of this part that the Commandant (CG– (d) and (e), and § 154.1170(e). 522) determines to be necessary for (28) Section 154.1150 (a) and (b). safety. (29) Section 154.1155. (e) If the owner of a vessel desires (30) Section 154.1160. any document endorsement described (31) Section 154.1165 (a), (b), (d), and in paragraph (b), (c), or (d) of this sec- (f). tion, the existing gas vessel must meet (32) Section 154.1170 (b) through (f). the requirements in each of the fol- (33) Section 154.1200 (a), (b)(1), and lowing: (b)(2). (1) Section 154.310 (d) and (e). (34) Section 154.1205(f). (2) Section 154.320 (b) and (c). (35) Section 154.1325. (3) Section 154.330 (a) through (e). (36) Section 154.1335(e). (4) Section 154.340(d). (5) Section 154.345 (a), (b)(1) through (37) Section 154.1350 (e), (f), (i), (o), (b)(5), (b)(7) and (c). and (u). (6) Section 154.476(a). § 154.15 U.S. flag vessel: Endorsement (7) Section 154.519(a)(2). application. (8) Section 154.534. (9) Section 154.538. (a) A person who desires the endorse- (10) Section 154.540 (c) and (d). ment required under § 154.1801 for a U.S. (11) Section 154.556. flag vessel must submit an application (12) Section 154.558. for an endorsement of the vessel’s Sub- (13) Section 154.560. chapter D Certificate of Inspection (14) Section 154.562. under the procedures in § 91.55–15 of (15) Section 154.703. this chapter. (16) Section 154.705. (b) The person requesting an endorse- (17) Section 154.706. ment under paragraph (a) of this sec- (18) Section 154.707. tion must submit to the Coast Guard, (19) Section 154.708. if requested— (20) Section 154.709. (1) Calculations for hull design re- (21) Section 154.904. quired by § 172.175 of this chapter; (22) Section 154.906. (2) The plans and information listed (23) Section 154.908(a), unless the in §§ 54.01–18, 56.01–10, 91.55–5 (a), (b), (d), space is separated from the accommo- (g), and (h), and 110.25–1 of this chapter;

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(3) Plans for the dry chemical supply flag vessel, whose flag administration and distribution systems, including the issues IMO Certificates, must submit controls; and to the Commanding Officer, U.S. Coast (4) Any other vessel information, in- Guard Marine Safety Center, 2100 2nd cluding, but not limited to plans, de- St., SW., Stop 7102, Washington, DC sign calculations, test results, certifi- 20593–7102, in a written or electronic cates, and manufacturer’s data, needed format, an application that includes to determine whether or not the vessel the following: meets the standards of this part. (1) The vessel’s valid IMO Certificate. § 154.17 U.S. flag vessel: Certificate of (2) A description of the vessel. Inspection endorsement. (3) Specifications for the cargo containment system. The Certificate of Inspection for a U.S. flag vessel allowed to carry a liq- (4) A general arrangement plan of the uefied gas listed in Table 4 has the fol- vessel. lowing endorsement for each cargo, (5) A midship section plan of the ves- with the corresponding carriage re- sel. quirement data inserted: (6) Schematic plans of the liquid and vapor cargo piping. Inspected and approved for the carriage of lll at a maximum allowable relief valve (7) A firefighting and safety plan. setting of lll kPa gauge (lll psig) with (8) If the applicant is requesting an an F factor of lll, a maximum external endorsement for the carriage of ethyl- pressure of lll kPa gauge (lll psig), a ene oxide, a classification society cer- minimum service temperature of lll °C tification that the vessel meets (lll °F), and a maximum specific gravity of lll. Hull type lll. § 154.1725(a) (4), (5), and (7). (9) If the vessel is a new gas vessel, or § 154.19 U.S. flag vessel: IMO certifi- an existing vessel that does not meet cate issuance. § 154.12 (b), (c), or (d)— (a) Either a classification society au- (i) A certification from a classifica- thorized under 46 CFR part 8, or the tion society that the vessel— Coast Guard Officer in Charge, Marine (A) Has enhanced grades of steel Inspection, issues an IMO Certificate to meeting § 154.170 (b)(1) and (b)(2) for a U.S. flag vessel when requested by crack arresting purposes in the deck the owner or representative, if— stringer, sheer strake, and bilge strake; (1) The vessel meets the requirements and of this part; and (B) Meets § 154.701, or if the vessel (2) It is a new gas vessel, it meets the carries methane, meets § 154.703, by IMO Resolution A.328(IX), ‘‘Code for having the capability of cargo tank the Construction and Equipment of pressure and temperature control with- Ships Carrying Liquefied Gases in out venting; and Bulk, 1975’’; or (ii) The vessel’s valid SOLAS Cargo (3) It is an existing gas vessel, it Ship Safety Construction Certificate meets the IMO ‘‘Code for Existing Ships Carrying Liquefied Gases in and Cargo Ship Safety Equipment Cer- Bulk, 1975’’. tificate. (b) The IMO Certificate expires on (10) Any additional plans, certifi- the same date that the vessel’s Certifi- cates, and information needed by the cate of Inspection expires. Commanding Officer, Marine Safety Center to determine whether or not the [CGD 77–069, 52 FR 31626, Aug. 21, 1987, as vessel meets this part. amended by CGD 95–010, 62 FR 67537, Dec. 24, 1997] (b) A person who desires an endorsed Certificate of Compliance to meet § 154.22 Foreign flag vessel: Certificate § 154.1802(b) for a foreign flag vessel, of Compliance endorsement appli- whose flag administration does not cation. issue IMO Certificates, must submit to (a) A person who desires an endorsed Certificate of Compliance to meet § 154.1802(a) of this part for a foreign

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the Commanding Officer, Marine Safe- § 154.30 [Reserved] ty Center the plans, calculations, and information under § 154.15(b). § 154.32 Equivalents. [CGD 77–069, 52 FR 31626, Aug. 21, 1987, as (a) A vessel that fails to meet the amended by CGD 88–070, 53 FR 34535, Sept. 7, standards in this part for an endorse- 1988; CGD 89–025, 54 FR 19571, May 8, 1989; ment on a Certificate of Inspection or a CGD 95–072, 60 FR 50466, Sept. 29, 1995; 60 FR Certificate of Compliance may meet an 54106, Oct. 19, 1995; USCG–2005–23172, 70 FR alternate standard if the Commandant 75734, Dec. 21, 2005; USCG–2007–29018, 72 FR (CG–522) finds that the alternate stand- 53967, Sept. 21, 2007] ard provides an equivalent or greater § 154.24 Foreign flag vessel: IMO Cer- level of protection for the purpose of tificate. safety. (b) The Commandant (CG–522) con- (a) An IMO Certificate issued under siders issuance of a finding of equiva- the IMO Resolution A.328(IX),’’Code for lence to the standard required by this the Construction and Equipment of part if the person requesting the find- Ships Carrying Liquefied Gases in ing submits a written application to Bulk, 1975’’ is usually sufficient evi- the Commandant (CG–522) that in- dence of compliance with this part for cludes— the Coast Guard to endorse a foreign (1) A detailed explanation of the ves- flag vessel’s Certificate of Compliance sel’s characteristics that do not meet with the name of each cargo in Table 4 the requirements in this part; and (follows § 154.1872) that is listed on the (2) An explanation of how each sub- IMO Certificate, if the information stituted standard would enable the ves- listed in item 3 of the IMO Certificate sel to meet a level of safety that would shows that— be equivalent to or greater than the (1) The design ambient temperatures standard in this part. meet § 154.174 and § 154.176; (c) Operational methods or proce- (2) The cargo tank design stress fac- dures may not be substituted for a par- tors and resulting MARVS of inde- ticular fitting, material, appliance, ap- pendent tanks type B or C meet paratus, item, or type of equipment re- § 154.447 or § 154.450; and quired in this part. (3) The cargo tank MARVS of a type IIPG ship meets § 172.175(c) of this § 154.34 Special approval: Requests. chapter. Each request for special approval (b) If a foreign flag existing gas ves- must be in writing and submitted to sel meets § 154.12 (b), (c), or (d), the ves- the Commandant (CG–522), U.S. Coast sel’s IMO Certificate issued under the Guard, 2100 2nd St., SW., Stop 7126, IMO ‘‘Code for Existing Ships Carrying Washington, DC 20593–7126. Liquefied Gases in Bulk, 1975’’ is usually sufficient evidence of compliance § 154.36 Correspondence and vessel in- with the requirements of § 154.12(e) for formation: Submission. the Coast Guard to endorse the Certifi- Correspondence to the Coast Guard cate of Compliance with the name of and all vessel information submitted to each cargo in Table 4 (follows § 154.1872) the Coast Guard must be in English, that is listed on the IMO Certificate; except— however if a foreign flag existing gas (a) IMO Certificates may be in vessel does not meet § 154.12 (b), (c), or French; and (d), an IMO Certificate issued under the (b) SOLAS Certificates may be in the IMO ‘‘Code for Existing Ships Carrying official language of the flag adminis- Liquefied Gases in Bulk, 1975’’ is not tration. acceptable evidence of compliance with the requirements of this part for the § 154.40 Right of appeal. endorsement of a Certificate of Compli- Any person directly affected by a de- ance. cision or action taken under this part, by or on behalf of the Coast Guard,

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may appeal therefrom in accordance (iv) The names of all cargoes listed in with subpart 1.03 of this chapter. Table 4 of this part that are on board the vessel; [CGD 88–033, 54 FR 50381, Dec. 6, 1989] (3) Make sure that the following items are available on board the vessel Subpart B—Inspections and Tests for the use of the Marine Inspector before beginning the examination re- EXAMINATION REQUIREMENTS FOR quired by § 154.150: FOREIGN FLAG VESSELS (i) A general arrangement (including § 154.150 Examination required for a the location of firefighting, safety, and Certificate of Compliance. lifesaving gear); and (ii) The cargo manual required by Before a vessel receives an initial or § 154.1810. reissued Certificate of Compliance en- (c) If the vessel was accepted for U.S. dorsed with the name of a cargo from service on the basis of Coast Guard Table 4 of this part, the vessel must plan review under § 154.5(b), the vessel call at a United States port for an ex- owner must notify Commanding Offi- amination, during which the Officer in cer, Marine Safety Center fourteen Charge, Marine Inspection, determines days prior to the vessel’s arrival at a whether or not the vessel meets the re- U.S. port. This notification must in- quirements of this chapter. clude: [CGD 81–052, 50 FR 8734, Mar. 5, 1985] (1) The name of the vessel’s first U.S. port of call; § 154.151 Procedures for having the (2) The date the vessel is scheduled to Coast Guard examine a vessel for a arrive; Certificate of Compliance. (3) The name and telephone number To have the Coast Guard examine the of the owner’s local agent; and vessel for a Certificate of Compliance, (4) The names of all cargoes listed in as required in § 154.150, the owner of a Table 4 of this part that are on board foreign flag vessel must proceed as fol- the vessel. lows: [CGD 81–052, 50 FR 8734, Mar. 5, 1985; 50 FR (a) After submitting an application 15895, Apr. 23, 1985; CGD 77–069, 52 FR 31630, under § 154.22, await notification by the Aug. 21, 1987; CGD 95–072, 60 FR 50466, Sept. Commanding Officer, Marine Safety 29, 1995; 60 FR 54106, Oct. 19, 1995] Center that review of the vessel’s plans or IMO Certificate and supporting doc- Subpart C—Design, Construction uments is complete. and Equipment (b) Except when paragraph (c) of this section applies, HULL STRUCTURE (1) After receiving notification from Commanding Officer, Marine Safety § 154.170 Outer hull steel plating. Center that review is complete and the (a) Except as required in paragraph application is acceptable, dispatch the (b) of this section, the outer hull steel vessel to a United States port; plating, including the shell and deck (2) Notify the Officer in Charge, Ma- plating must meet the material stand- rine Inspection, for the port where the ards of the American Bureau of Ship- vessel is to be inspected at least seven ping published in ‘‘Rules for Building days before the vessel arrives and ar- and Classing Steel Vessels’’ 1981. range the exact time and other details (b) Along the length of the cargo of the examination. This notification is area, grades of steel must be as follows: in addition to any other pre-arrival no- (1) The deck stringer and sheer tice to the Coast Guard required by strake must be at least Grade E steel other regulations and must include: or a grade of steel that has equivalent (i) The name of the vessel’s first U.S. chemical properties, mechanical prop- port of call; erties, and heat treatment, and that is (ii) The date the vessel is scheduled specially approved by the Commandant to arrive; (CG–522). (iii) The name and telephone number (2) The strake at the turn of the bilge of the owner’s local agent; and must be Grade D, Grade E, or a grade of

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steel that has equivalent chemical TABLE 1—MINIMUM TEMPERATURE, THICKNESS, properties, mechanical properties, and AND STEEL GRADES IN CONTIGUOUS HULL heat treatment, and that is specially STRUCTURES approved by the Commandant (CG–522). Minimum tem- 1 (3) The outer hull steel of vessels perature Steel thickness Steel grade must meet the standards in § 154.172 if ° ° the hull steel temperature is cal- 0 C (32 F) .... All ...... Standards of the American Bureau of culated to be below ¥5 °C (23 °F) as- Shipping published suming: in ‘‘Rules for Build- ing and Classing (i) For any waters in the world, the Steel Vessels’’, ambient cold conditions of still air at 5 1981 °C (41 °F) and still sea water at 0 °C (32 ¥10 °C (14 T≤112.5 mm (1⁄2 B ° °F); F). in.). 12.5< t≤25.5 mm D (ii) For cargo containment systems (1 in.). with secondary barriers, the tempera- >25.5 mm (1 in.) ... E ¥ ° ¥ ≤ 1 ture of the secondary barrier is the de- 25 C ( 13 t 112.5 mm ( ⁄2 D ° sign temperature; and F). in.). >12.5 mm (1⁄2 in.) E (iii) For cargo containment systems 1 Steel grade of the American Bureau of Shipping published without secondary barriers, the tem- in ‘‘Rules for Building and Classing Steel Vessels’’, 1981. perature of the cargo tank is the design temperature. [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, [CGD 74–289, 44 FR 26009, May 3, 1979, as 1983; CGD 77–069, 52 FR 31630, Aug. 21, 1987] amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983; CGD 77–069, 52 FR 31630, Aug. 21, 1987] § 154.174 Transverse contiguous hull structure. § 154.172 Contiguous steel hull structure. (a) The transverse contiguous hull structure of a vessel having cargo con- (a) Except as allowed in paragraphs tainment systems without secondary (b) and (c) of this section, plates, forg- barriers must meet the standards of ings, forged and rolled fittings, and the American Bureau of Shipping pub- rolled and forged bars and shapes used lished in ‘‘Rules for Building and in the construction of the contiguous Classing Steel Vessels’’, 1981. steel hull structure must meet the (b) The transverse contiguous hull thickness and steel grade in Table 1 for structure of a vessel having cargo con- the temperatures under §§ 154.174(b) and tainment systems with secondary bar- 154.176(b). riers must be designed for a tempera- (b) for a minimum temperature, de- ture that is: termined under §§ 154,174(b) and (1) Colder than the calculated tem- 154.176(b), below ¥25 °C (¥13 °F ), the perature of this hull structure when: contiguous steel hull structure must (i) The temperature of the secondary meet § 54.25–10 for that minimum tem- barrier is the design temperature, and perature. (ii) The ambient cold condition under (c) If a steel grade that is not listed § 154.176(b)(1)(ii) and (iii) are assumed; in Table 1 has the equivalent chemical or properties, mechanical properties, and (2) Maintained by the heating system heat treatment of a steel grade that is under § 154.178. listed, the steel grade not listed may be [CGD 74–289, 44 FR 26009, May 3, 1979, as specially approved by the Commandant amended by CGD 77–069, 52 FR 31630, Aug. 21, (CG–522), for use in the contiguous hull 1987] structure. § 154.176 Longitudinal contiguous hull structure. (a) The longitudinal contiguous hull structure of a vessel having cargo containment systems without secondary barriers must meet the standards of

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the American Bureau of Shipping pub- meet § 54.05–15 and subpart 57.03 of this lished in ‘‘Rules for Building and chapter. Classing Steel Vessels’’, 1981. (b) The longitudinal contiguous hull § 154.182 Contiguous hull structure: structure of a vessel having cargo con- Production weld test. tainment systems with secondary bar- If a portion of the contiguous hull riers must be designed for a tempera- structure is designed for a temperature ture that is: colder than ¥34 °C (¥30 °F) and is not (1) Colder than the calculated tem- part of the secondary barrier, each perature of this hull structure when: 100m (328 ft.) of full penetration butt (i) The temperature of the secondary welded joints in that portion of the barrier is the design temperature; and contiguous hull structure must pass (ii) For any waters in the world ex- the following production weld tests in cept Alaskan waters, the ambient cold the position that the joint is welded: condition of: (a) Bend tests under § 57.06–4 of this (A) Five knots air at ¥18 °C (0 °F); chapter. and (b) A Charpy V-notch toughness test (B) Still sea water at 0 °C (32 °F); or under § 57.06–5 of this chapter on one (iii) For Alaskan waters the ambient set of 3 specimens alternating the cold condition of: notch location on successive tests be- (A) Five knots air at ¥29 °C (¥20 °F); tween the center of the weld and the and most critical location in the heat af- 2 (B) Still sea water at ¥2 °C (28 °F); or fected zone. (2) Maintained by the heating system (c) If the contiguous hull structure under § 154.178, if, without heat, the does not pass the test under paragraph contiguous hull structure is designed (b) of this section, the retest proce- for a temperature that is colder than dures under § 54.05–5(c) must be met. the calculated temperature of the hull § 154.188 Membrane tank: Inner hull structure assuming the: steel. (i) Temperature of the secondary bar- For a vessel with membrane tanks, rier is the design temperature; and the inner hull plating thickness must (ii) Ambient cold conditions of still meet the deep tank requirements of the air at 5 °C (41 °F) and still sea water at American Bureau of Shipping published 0 °C (32 °F). in ‘‘Rules for Building and Classing [CGD 74–289, 44 FR 26009, May 3, 1979, as Steel Vessels’’, 1981. amended by CGD 77–069, 52 FR 31630, Aug. 21, 1987] [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 77–069, 52 FR 31630, Aug. 21, § 154.178 Contiguous hull structure: 1987] Heating system. § 154.195 Aluminum cargo tank: Steel The heating system for transverse enclosure. and longitudinal contiguous hull struc- (a) An aluminum cargo tank and its ture must: dome must be enclosed by the vessel’s (a) Be shown by a heat load calcula- hull structure or a separate steel cover. tion to have the heating capacity to (b) The steel cover for the aluminum meet § 154.174(b)(2) or § 154.176(b)(2); cargo tank must meet the steel struc- (b) Have stand-by heating to provide tural standards of the American Bu- 100% of the required heat load and dis- reau of Shipping published in ‘‘Rules tribution determined under paragraph for Building and Classing Steel Ves- (a); and sels’’, 1981. (c) Meet Parts 52, 53, and 54 of this (c) The steel cover for the aluminum chapter. tank dome must be: § 154.180 Contiguous hull structure: Welding procedure. 2 The most critical location in the heat affected zone of the weld is based on procedure Welding procedure tests for contig- qualification results, except austenitic stain- uous hull structure designed for a tem- less steel need have notches only in the cen- perature colder than ¥18 °C (0 °F) must ter of the weld.

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(1) At least 3.2 mm (1⁄8 in.) thick; modation, service and control spaces, (2) Separated from the tank dome, chain lockers, potable, domestic and except at the support points; and feed water tanks, store rooms and (3) Thermally isolated from the spaces immediately below or outboard dome. of hold spaces by a: [CGD 74–289, 44 FR 26009, May 3, 1979, as (a) Cofferdam, fuel oil tank, or single amended by CGD 77–069, 52 FR 31630, Aug. 21, gastight A–60 Class Division of all 1987] welded construction in a cargo containment system not required by this part SHIP SURVIVAL CAPABILITY AND CARGO to have a secondary barrier; TANK LOCATION (b) Cofferdam or fuel oil tank in a § 154.200 Stability requirements: Gen- cargo containment system required by eral. this part to have a secondary barrier; or Each vessel must meet the applicable requirements in subchapter S of this (c) If there are no sources of ignition chapter. or fire hazards in the adjoining space, single gastight A-O Class Division of [CGD 79–023, 48 FR 51009, Nov. 4, 1983] all welded construction.

§ 154.235 Cargo tank location. § 154.305 Segregation of hold spaces (a) For type IG hulls, cargo tanks from the sea. must be located inboard of: In vessels having cargo containment (1) The transverse extent of damage systems required by this part to have a for collision penetration specified in secondary barrier, hold spaces must be Table 172.180 of this chapter; segregated from the sea by: (2) The vertical extent of damage for (a) A double bottom if the cargo grounding penetration specified in tanks meet this part for design tem- Table 172.180 of this chapter; and peratures colder than ¥10 °C (14 °F); (3) 30 inches (760 mm) from the shell and plating. (b) For type IIG, IIPG, and IIIG hulls, (b) Wing tanks if the cargo tanks meet this part for design temperatures cargo tanks must be located inboard of: ¥ ° ¥ ° (1) The vertical extent of damage for colder than 55 C ( 67 F). grounding penetration specified in § 154.310 Cargo piping systems. Table 172.180 of this chapter; and (2) 30 inches (760 mm) from the shell Cargo liquid or vapor piping must: plating. (a) Be separated from other piping (c) In vessels having membrane and systems, except where an interconnec- semi-membrane tanks, the vertical and tion to inert gas or purge piping is re- transverse extents of damage must be quired by § 154.901(a); measured to the inner hull. (b) Not enter or pass through any ac- (d) For type IIG, IIPG, and IIIG hulls, commodation, service, or control cargo tank suction wells may pene- space; trate into the area of bottom damage (c) Except as allowed under § 154.703, specified as the vertical extent of dam- not enter or pass through a machinery age for grounding penetration in Table space other than a cargo pump or com- 172.180 of this chapter if the penetra- pressor room; tion is the lesser of 25% of the double (d) Be in the cargo area except: bottom height or 13.8 in. (350 mm). (1) As allowed under § 154.703; [CGD 74–289, 44 FR 26009, May 3, 1979, as (2) Bow and stern loading piping; and amended by CGD 79–023, 48 FR 51010, Nov. 4, (3) Emergency jettisoning piping. 1983] (e) Be above the weather deck except: SHIP ARRANGEMENTS (1) As allowed under § 154.703; (2) Pipes in a trunk traversing void § 154.300 Segregation of hold spaces spaces above a cargo containment sys- from other spaces. tem; and Hold spaces must be segregated from (3) Pipes for draining, venting, or machinery and boiler spaces, accom- purging interbarrier and hold spaces;

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(f) Connect into the cargo contain- (b) If a hold space having a cargo con- ment system above the weather deck tainment system, required by this part except: to have a secondary barrier, is sepa- (1) Pipes in a trunk traversing void rated from any accommodation, serv- spaces above a cargo containment sys- ice, or control space by a cruciform tem; and joint, there must be a cofferdam pro- (2) Pipes for draining, venting, or viding at least 760 mm (30 inches) by purging interbarrier and hold spaces. 760 mm (30 inches) clearance on one (g) Be inboard of the transverse cargo side of the cruciform joint. tank location required by § 154.235, except for athwartship shore connection § 154.330 Openings to accommodation, manifolds not subject to internal pres- service, or control spaces. sure at sea. (a) Entrances, forced or natural ventilation intakes and exhausts, and § 154.315 Cargo pump and cargo com- other openings to accommodation, pressor rooms. service, or control spaces, except as al- (a) Cargo pump rooms and cargo com- lowed in paragraph (c) of this section, pressor rooms must be above the must be: weather deck and must be within the (1) At least L/25 or 3.05m (10 ft) from cargo area. the athwartship bulkhead facing the (b) Where pumps and compressors are cargo area, whichever is farther, except driven by a prime mover in an adjacent that the distance need not exceed 5m gas safe space: (16.4 ft); and (1) The bulkhead or deck must be (2) On a house athwartship bulkhead gastight; and not facing the cargo area or on the out- (2) The shafting passing through the board side of the house. bulkhead or deck must be sealed by a (b) Each port light, located on the fixed oil reservoir gland seal, a pres- athwartship bulkhead of a house facing sure grease seal, or another type of the cargo area or the house sides with- positive pressure seal specially ap- in the distance specified in paragraph proved by the Commandant (CG–522). (a)(1) of this section, must be a fixed [CGD 74–289, 44 FR 26009, May 3, 1979, as type. amended by CGD 82–063b, 48 FR 4782, Feb. 3, (c) Wheelhouse doors and windows 1983] that are not fixed may be within the distance specified in paragraph (a)(1) of § 154.320 Cargo control stations. this section from the athwartship bulk- (a) Cargo control stations must be head of a house facing the cargo area, above the weather deck. if they have gaskets and pass a tight- (b) If a cargo control station is in ac- ness test with a fire hose at not less commodation, service, or control than 207 kPa gauge (30 psig). spaces or has access to such a space, (d) Port lights in the hull plating the station must: below the uppermost continuous deck (1) Be a gas safe space; and in the first tier of the super- (2) Have an access to the space that structure must be a fixed type. meets § 154.330; and (e) Air intakes and openings into ac- (3) Have indirect reading instrumen- commodation, service, and control tation, except for gas detectors. spaces must have metal closures that (c) Cargo control stations, including pass a tightness test with a fire hose at a room or area, must contain all not less than 207 kPa gauge (30 psig). alarms, indicators, and remote controls (f) On liquefied toxic gas vessels, the associated with each cargo tank that closures required in paragraph (e) of the station controls. this section must be capable of being closed from inside the space. § 154.325 Accommodation, service, and control spaces. § 154.340 Access to tanks and spaces in (a) Accommodation, service, and con- the cargo area. trol spaces must be outside the cargo (a) Each cargo tank must have a area. manhole from the weather deck, the

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clear opening of which is at least 600 (3) Have an audible and visual alarm mm by 600 mm (23.6 in. by 23.6 in.). on both sides which are actuated when (b) Each access into and through a both door securing devices are in other void space or other gas-dangerous than the fully closed position at the space in the cargo area, except spaces same time; described in paragraph (e) of the defini- (4) Have mechanical ventilation in tion for ‘‘gas-dangerous space’’ in the space between the doors from a § 154.7, must— gas-safe area; (1) Have a clear opening of at least (5) Have a pressure greater than that 600 mm by 600 mm (23.6 in. by 23.6 in.) of the gas-dangerous area on the through horizontal openings, hatches, weather deck; or manholes; (6) Have the rate of air change in the (2) Have a clear opening of at least space between the doors of at least 8 600 mm by 800 mm (23.6 in. by 31.5 in.) changes per hour; and through bulkheads, frames or other (7) Have the space between the doors vertical structural members; and monitored for cargo vapor leaks under (3) Have a fixed ladder if the lower § 154.1350. edge of a vertical opening is more than (c) In addition to the requirements of 600 mm (23.6 in.) above the deck or bot- paragraphs (a) and (b) of this section, tom plating. no gas-safe space on a liquefied flam- (c) Each access trunk in the cargo mable gas carrier may have an air lock area must be at least 760 mm (30 in.) in unless the space: diameter. (1) Is mechanically ventilated to (d) The lower edge of each access make the pressure in the space greater from the weather deck to gas-safe than that in the air lock; and spaces in the cargo area must be at (2) Has a means of automatically de- least 2.4 m (7.9 ft.) above the weather energizing all electrical equipment deck or the access must be through an that is not explosion-proof in the space air lock that meets § 154.345. when the pressure in the space falls to (e) The inner hull in the cargo area or below the pressure in the air lock. must be accessible for inspection from at least one side without the removal § 154.350 Bilge and ballast systems in of any fixed structure or fitting. the cargo area. (f) The hold space insulation in the (a) Hold, interbarrier, and insulation cargo area must be accessible for in- spaces must have a means of sounding spection from at least one side from the space or other means of detecting within the hold space or there must be liquid leakage specially approved by a means, that is specially approved by the Commandant (CG–522). the Commandant, of determining from (b) Each hold and insulation space outside the hold space whether or not must have a bilge drainage system. the hold space insulation meets this (c) Interbarrier spaces must have an part. eductor or pump for removing liquid [CGD 74–289, 44 FR 26009, May 3, 1979, as cargo and returning it to the cargo amended by CGD 77–069, 52 FR 31630, Aug. 21, tanks or to an emergency jettisoning 1987] system meeting § 154.356. (d) Spaces in the cargo containment § 154.345 Air locks. portion of the vessel, except ballast (a) An air lock may be used for access spaces and gas-safe spaces, must not from a gas-dangerous zone on the connect to pumps in the main machin- weather deck to a gas-safe space. ery space. (b) Each air lock must: [CGD 74–289, 44 FR 26009, May 3, 1979, as (1) Consist of two steel doors, at least amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1.5 m (4.9 ft.) but not more than 2.5 m 1983] (8.2 ft.) apart, each gasketed and tight when tested with a fire hose at not less § 154.355 Bow and stern loading pip- 207 kPa gauge (30 psig); ing. (2) Have self-closing doors with no (a) Bow and stern loading piping latches or other devices for holding must: them open; (1) Meet § 154.310;

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(2) Be installed in an area away from (2) The vapor pressure of the cargo the accommodation, service, or control results solely from ambient tempera- space on type IG hulls; ture. (3) Be clearly marked; (c) The Po of a cargo tank may be ex- (4) Be segregated from the cargo pip- ceeded under harbor conditions if spe- ing by a removable spool piece in the cially approved by the Commandant cargo area or by at least two shut-off (CG–522). valves in the cargo area that have [CGD 74–289, 44 FR 26009, May 3, 1979, as means of locking to meet § 154.1870(a); amended by CGD 82–063b, 48 FR 4782, Feb. 3, (5) Have a means for checking for 1983] cargo vapor between the two valves under paragraph (a)(4) of this section; § 154.406 Design loads for cargo tanks (6) Have fixed inert gas purging lines; and fixtures: General. and (a) Calculations must show that a (7) Have fixed vent lines for purging cargo tank and its fixtures are de- with inert gas to meet § 154.1870(b). signed for the following loads: (b) Entrances, forced or natural ven- (1) Internal pressure head. tilation intakes, exhausts, and other (2) External pressure load. openings to accommodation, service, or (3) Dynamic loads resulting from the control spaces that face the bow or motion of the vessel. stern loading area must meet § 154.330. (4) Transient or stationary thermal loads if the design temperature is cold- § 154.356 Cargo emergency jettisoning er that ¥55 °C (¥67 °F) or causes ther- piping. mal stresses in cargo tank supports. Emergency jettisoning piping must: (5) Sloshing loads, if the cargo tank (a) Meet § 154.355(a); is designed for partial loads. (b) Be designed to allow cargo dis- (6) Loads resulting from vessel’s de- charge without the outer hull steel flection. temperature falling below the min- (7) Tank weight, cargo weight, and imum temperatures under §§ 154.170 and corresponding support reaction. 154.172; and (8) Insulation weight. (9) Loads of a pipe tower and any (c) Be specially approved by the Com- other attachments to the cargo tank. mandant (CG–522). (10) Vapor pressure loads in harbor [CGD 74–289, 44 FR 26009, May 3, 1979, as conditions allowed under § 154.405. amended by CGD 82–063b, 48 FR 4782, Feb. 3, (11) Gas pressurization if the cargo 1983] tank is designed for gas pressurization as a means of cargo transfer. CARGO CONTAINMENT SYSTEMS (b) A cargo tank must be designed for the most unfavorable static heel angle § 154.401 Definitions. within a 0° to 30° range without exceed- As used in §§ 154.440 and 154.447: ing the allowable stress of the mate- ‘‘sY’’ means the minimum yield rial. strength of the tank material, includ- (c) A hydrostatic or hydropneumatic ing weld metal, at room temperature. test design load must be specially ap- ‘‘sB’’ means minimum tensile proved by the Commandant (CG–522). strength of the tank material, includ- [CGD 74–289, 44 FR 26009, May 3, 1979, as ing weld metals, at room temperature. amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983] § 154.405 Design vapor pressure (Po) of a cargo tank. § 154.407 Cargo tank internal pressure (a) The design vapor pressure (Po) of head. a cargo tank must be equal to or great- (a) For the calculation required er than the MARVS. under § 154.406(a)(1) and (b), the internal (b) The Po of a cargo tank must be pressure head (heq), must be determined equal to or greater than the vapor pres- from the following formula: sure of the cargo at 45 °C (113 °F) if: (1) The cargo tank has no tempera- heq=10 Po+(hgd)max ture control for the cargo; and where:

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hgd (the value of internal pressure, in meters gravitational and dynamic loads in the b of fresh water, resulting from the com- direction (see figure 1); bined effects of gravity and dynamic accel- Zb=largest liquid height (m) above the point erations of a full tank)=ab Zb Y; where the pressure is to be determined in where: the b direction (see figure 2); ab=dimensionless acceleration relative to Y=maximum specific weight of the cargo (t/ the acceleration of gravity resulting from m3) at the design temperature.

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(b) The (hgd) max is determined for the external pressure to which any portion b direction, on the ellipse in Figure 1, of the cargo tank may be simulta- which gives the maximum value for hgd. neously subjected. (c) When the longitudinal acceleration is considered in addition to the § 154.409 Dynamic loads from vessel vertical transverse acceleration, an el- motion. lipsoid must be used in the calculations (a) For the calculation required instead of the ellipse contained in Fig- under § 154.406 (a)(3) and (b), the dy- ure 1. namic loads must be determined from the long term distribution of vessel § 154.408 Cargo tank external pressure motions, including the effects of surge, load. sway, heave, roll, pitch, and yaw on ir- For the calculation required under regular seas that the vessel may expe- § 154.406 (a)(2) and (b), the external pres- rience during 108 wave encounters. The sure load must be the difference be- speed used for this calculation may be tween the minimum internal pressure reduced from the ship service speed if (maximum vacuum), and the maximum specially approved by the Commandant

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(CG–522) and if that reduced speed is loads must be determined for the larg- used in the hull strength calculation est loads the vessel may experience under § 31.10–5(c) of this chapter. during an operating life corresponding (b) If the loads determined under to the probability level of 10¥8, by paragraphs (c), (d), or (e) of this section using one of the following methods: result in a design stress that is lower (1) Method 1 is a detailed analysis of than the allowable stress of the mate- the vessel’s acceleration components. rial under §§ 154.610, 154.615, or 154.620, (2) Method 2 applies to vessels of 50 m the allowable stress must be reduced to (164 ft) or more in length and is an that stress determined in paragraphs analysis by the following formulae that (c), (d), or (e). corresponds to a 10¥8 probability level (c) If a tank is designed to avoid plas- in the North Atlantic: tic deformation and buckling, then ac- (i) Vertical acceleration under para- celeration components of the dynamic graph (f)(1) of this section:

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(d) If a cargo tank is designed to tion must be used to develop the dy- avoid fatigue, the dynamic loads deter- namic spectrum. mined under paragraph (a) of this sec-

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(e) If a cargo tank is designed to (2) For a load distribution for a pe- avoid uncontrolled crack propagation, riod of 15 days by the method in Figure the dynamic loads are: 3. (1) Determined under paragraph (a) of this section; and

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(f) When determining the accelera- § 154.412 Cargo tank corrosion allow- tions for dynamic loads under para- ance. graph (a) of this section, the accelera- A cargo tank must be designed with tions acting in a cargo tank must be a corrosion allowance if the cargo estimated for the cargo tank’s center tank: of gravity and include the following component accelerations: (a) is located in a space that does not (1) Vertical accelerations, meaning have inert gas or dry air; or the motion acceleration of heave and (b) carries a cargo that corrodes the pitch, and of any roll normal to the tank material. vessel base that has an effect on the NOTE: Corrosion allowance for independent component acceleration. tank type C is contained in § 54.01–35 of this (2) Transverse acceleration, meaning chapter. the motion acceleration of sway, yaw and roll, and gravity component of roll. INTEGRAL TANKS (3) Longitudinal acceleration, meaning the motion acceleration of surge § 154.418 General. and pitch and gravity component of An integral tank must not be de- pitch. signed for a temperature colder than ¥10 °C (14 °F), unless the tank is spe- [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, cially approved by the Commandant 1983] (CG–522). [CGD 74–289, 44 FR 26009, May 3, 1979, as § 154.410 Cargo tank sloshing loads. amended by CGD 82–063b, 48 FR 4782, Feb. 3, (a) For the calculation required 1983] under § 154.406 (a)(5) and (b), the determined sloshing loads resulting from § 154.419 Design vapor pressure. the accelerations under § 154.409(f) must The Po of an integral tank must not be specially approved by the Com- exceed 24.5 kPa gauge (3.55 psig) unless mandant (CG–522). special approval by the Commandant (b) If the sloshing loads affect the (CG–522) allows a Po between 24.5 kPa cargo tank scantlings, an analysis of gauge (3.55 psig) and 69 kPa gauge (10 the effects of the sloshing loads in ad- psig). dition to the calculation under paragraph (a) of this section must be spe- [CGD 74–289, 44 FR 26009, May 3, 1979, as cially approved by the Commandant amended by CGD 82–063b, 48 FR 4782, Feb. 3, (CG–522). 1983] [CGD 74–289, 44 FR 26009, May 3, 1979, as § 154.420 Tank design. amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983] (a) The structure of an integral tank must meet the deep tank scantling § 154.411 Cargo tank thermal loads. standards of the American Bureau of Shipping published in ‘‘Rules for Build- For the calculations required under ing and Classing Steel Vessels’’, 1981. § 154.406(a)(4), the following determined loads must be specially approved by (b) The structure of an integral tank the Commandant (CG–522): must be designed and shown by cal- (a) Transient thermal loads for the culation to withstand the internal cooling down periods of cargo tanks for pressure determined under § 154.407. design temperatures lower than ¥55 °C [CGD 74–289, 44 FR 26009, May 3, 1979, as (¥67 °F). amended by CGD 77–069, 52 FR 31630, Aug. 21, (b) Stationary thermal loads for 1987] cargo tanks for design temperatures lower than ¥55 °C (¥67 °F) that cause § 154.421 Allowable stress. high thermal stress. The allowable stress for the integral [CGD 74–289, 44 FR 26009, May 3, 1979, as tank structure must meet the Amer- amended by CGD 82–063b, 48 FR 4782, Feb. 3, ican Bureau of Shipping’s allowable 1983] stress for the vessel’s hull published in

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‘‘Rules for Building and Classing Steel stresses that are specially approved by Vessels’’, 1981. the Commandant (CG–522). [CGD 74–289, 44 FR 26009, May 3, 1979, as [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 77–069, 52 FR 31630, Aug. 21, amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1987] 1983]

MEMBRANE TANKS § 154.429 Calculations. The tank design load calculations for § 154.425 General. a membrane tank must include the fol- The design of the hull structure and lowing: the design of the membrane tank sys- (a) Plastic deformation and fatigue tem, that includes the membrane tank, life resulting from static and dynamic secondary barrier, including welds, the loads in the membrane and the sup- supporting insulation, and pressure porting insulation. control equipment, must be specially (b) The response of the membrane approved by the Commandant (CG–522). and its supporting insulation to vessel motion and acceleration under the [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, worst weather conditions. Calculations 1983] from a similar vessel may be submitted to meet this paragraph. § 154.426 Design vapor pressure. (c) The combined strains from static, dynamic, and thermal loads. The Po of a membrane tank must not exceed 24.5 kPa gauge (3.55 psig) unless § 154.430 Material test. special approval by the Commandant (a) The membrane and the membrane (CG–522) allows a Po between 24.5 kPa gauge (3.55 psig) and 69 kPa gauge (10 supporting insulation must be made of psig). materials that withstand the combined strains calculated under § 154.429(c). [CGD 74–289, 44 FR 26009, May 3, 1979, as (b) Analyzed data of a material test amended by CGD 82–063b, 48 FR 4782, Feb. 3, for the membrane and the membrane 1983] supporting insulation must be submitted to the Commandant (CG–522). § 154.427 Membrane tank system design. [CGD 74–289, 44 FR 26009, May 3, 1979, as A membrane tank system must be amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983] designed for: (a) Any static and dynamic loads § 154.431 Model test. with respect to plastic deformation and (a) The primary and secondary bar- fatigue; rier of a membrane tank, including the (b) Combined strains from static, dy- corners and joints, must withstand the namic, and thermal loads; combined strains from static, dynamic, (c) Preventing collapse of the mem- and thermal loads calculated under brane from: § 154.429(c). (1) Over-pressure in the interbarrier (b) Analyzed data of a model test for space; the primary and secondary barrier of (2) Vacuum in the cargo tank; the membrane tank must be submitted (3) Sloshing in a partially filled cargo to the Commandant (CG–522). tank; and (4) Hull vibrations; and [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, (d) The deflections of the vessel’s 1983] hull. § 154.432 Expansion and contraction. § 154.428 Allowable stress. The support system of a membrane The membrane tank and the sup- tank must allow for thermal and phys- porting insulation must have allowable ical expansion and contraction of the tank.

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SEMI-MEMBRANE TANKS (b) Withstand loads from tank supports calculated under §§ 154.470 and § 154.435 General. 154.471; and (a) The design of a semi-membrane (c) Have a corrosion allowance that tank, the supporting insulation for the meets § 154.412. tank, and the supporting hull structure [CGD 74–289, 44 FR 26009, May 3, 1979, as for the tank must be specially ap- amended by CGD 77–069, 52 FR 31630, Aug. 21, proved by the Commandant (CG–522). 1987] (b) A semi-membrane tank must be designed to meet: § 154.440 Allowable stress. (1) § 154.425 through § 154.432; (a) The allowable stresses for an inde- (2) § 154.437 through § 154.440; or pendent tank type A must: (3) § 154.444 through § 154.449. (1) For tank web frames, stringers, or [CGD 74–289, 44 FR 26009, May 3, 1979, as girders of carbon manganese steel or amended by CGD 82–063b, 48 FR 4782, Feb. 3, aluminum alloys, meet sB/2.66 or sY/ 1983] 1.33, whichever is less; and (2) For other materials, be specially § 154.436 Design vapor pressure. approved by the Commandant (CG–522). The Po of a semi-membrane tank (b) A greater allowable stress than must not exceed 24.5 kPa gauge (3.55 required in paragraph (a)(1) of this sec- psig) unless special approval by the tion may be specially approved by the Commandant (CG–522) allows a Po be- Commandant (CG–522) if the equivalent tween 24.5 kPa gauge (3.55 psig) and 69 stress (sc) is calculated from the for- kPa gauge (10 psig). mula in Appendix A of this part. [CGD 74–289, 44 FR 26009, May 3, 1979, as (c) Tank plating must meet the amended by CGD 82–063b, 48 FR 4782, Feb. 3, American Bureau of Shipping’s deep 1983] tank standards, for an internal pressure head that meets § 154.439(a), pub- INDEPENDENT TANK TYPE A lished in ‘‘Rules for Building and Classing Steel Vessels’’, 1981. § 154.437 General. An independent tank type A must [CGD 74–289, 44 FR 26009, May 3, 1979, as meet § 154.438 through § 154.440. amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983; CGD 77–069, 52 FR 31630, Aug. 21, 1987] § 154.438 Design vapor pressure. INDEPENDENT TANK TYPE B (a) If the surface of an independent tank type A are mostly flat sur- § 154.444 General. faces,the Po must not exceed 69 kPa An independent tank type B must be gauge (10 psig). designed to meet §§ 154.445 through (b) If the surfaces of an independent 154.449. tank type A are formed by bodies of revolution, the design calculation of § 154.445 Design vapor pressure. the P must be specially approved by o If the surfaces of an independent the Commandant (CG–522). tank type B are mostly flat surfaces, [CGD 74–289, 44 FR 26009, May 3, 1979, as the Po must not exceed 69 kPa gauge amended by CGD 82–063b, 48 FR 4782, Feb. 3, (10 psig). 1983] § 154.446 Tank design. § 154.439 Tank design. An independent tank type B must An independent tank type A must meet the calculations under § 154.448. meet the deep tank standard of the American Bureau of Shipping published § 154.447 Allowable stress. in ‘‘Rules for Building and Classing Steel Vessels’’, 1981, and must: (a) An independent tank type B de- (a) Withstand the internal pressure signed from bodies of revolution must determined under § 154.407;

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have allowable stresses 3 determined by (e) A finite element analysis using the following formulae: the loads determined under § 154.406. (f) A fracture mechanics analysis sm≤ f using the loads determined under s ≤ 1.5 f L § 154.406. ≤ sb 1.5 F (g) The cumulative effects of the fa- sL + sb≤ 1.5 F tigue load from the following formula:

sm + sb≤ 1.5 F 3 where: n1 +≤10 ∑ Cw s =equivalent primary general membrane m NN1 j stress 4 sL=equivalent primary local membrane where: 4 stress ni=the number of stress cycles at each stress 4 sb=equivalent primary bending stress level during the life of the vessel; f=the lesser of (sB/A) or (sY/B) Ni=the number of cycles to failure for cor- F=the lesser of (sB/C) or (sY/D) responding stress levels from the Wohler A, B, C, and D=stress factors in Table 2. (S-N) curve; Nj=the number of cycles to failure from the TABLE 2—VALUES FOR STRESS FACTORS fatigue load by loading and unloading the tank; and Nickel steel and carbon Austenitic Aluminum Cw=0.5 or less. A Cw of greater than 0.5 but manganese steel values alloy values not exceeding 1.0 may be specially ap- steel values proved by the Commandant (G-MTH).

Stress factors: [CGD 74–289, 44 FR 26009, May 3, 1979, as A ...... 4.0 4.0 4.0 amended by CGD 82–063b, 48 FR 4782, Feb. 3, B ...... 2.0 1.6 1.5 1983] C ...... 3.0 3.0 3.0 D ...... 1.5 1.5 1.5 § 154.449 Model test. (b) An independent tank type B de- The following analyzed data of a signed from plane surfaces must have model test of structural elements for allowable stresses specially approved independent tank type B must be sub- by the Commandant (CG–522). mitted to the Commandant (CG–522) for special approval: [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, (a) Stress concentration factors. 1983] (b) Fatigue life. [CGD 74–289, 44 FR 26009, May 3, 1979, as § 154.448 Calculations. amended by CGD 82–063b, 48 FR 4782, Feb. 3, The following calculations for an 1983] independent tank type B must be specially approved by the Commandant INDEPENDENT TANK TYPE C AND (CG–522): PROCESS PRESSURE VESSELS (a) Plastic deformation, fatigue life, § 154.450 General. buckling, and crack propagation resulting from static and dynamic loads Independent tanks type C and process on the tank and its support. pressure vessels must be designed to (b) A three-dimensional analysis of meet the requirements under Part 54 of the stress exerted by the hull on the this chapter, except § 54.01–40(b), and: tank, its support, and its keys. (a) The calculation under § 54.01–18 (c) The response of the tank and its (b)(1) must also include the design support to the vessel’s motion and ac- loads determined under § 154.406; celeration in irregular waves or cal- (b) The calculated tank plating culations from a similar vessel. thickness, including any corrosion al- (d) A tank buckling analysis consid- lowance, must be the minimum thick- ering the maximum construction toler- ness without a negative plate toler- ance. ance; and (c) The minimum tank plating thick- 3 See Appendix B for stress analyses defini- ness must not be less than: tions. (1) 5mm (3⁄16 in.) for carbon-man- 4 See Appendix A for equivalent stress. ganese steel and nickel steel;

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(2) 3mm (1⁄8 in.) for austenitic steels; tank, the effect of acceleration and hull or deflection, and the local effect of external and internal pressure. (3) 7mm (9⁄32 in.) for aluminum alloys. P4=0, or the external pressure from the head § 154.451 Design vapor pressure. of water from any portion of the pressure vessel on exposed decks. The Po (kPa) of an independent tank type C must be calculated by the fol- § 154.453 Failure to meet independent lowing formula: tank type C standards. 3/2 Po=196+AC(r) If the Commandant (CG–522) deter- where: mines during plan review, that a tank designed as an independent tank type C A=1.813 (s /Ds ) 2; m A fails to meet the standards under sm=design primary membrane stress; DsA=(allowable dynamic membrane stress for § 154.450, § 154.451, and 154.452 and can double amplitude at probability level not be redesigned to meet those stand- Q=10¥8) 53.9 MPa (7821 psi) for ferritic and ards, the tank may be redesigned as an martensitic steels and 24.5 MPa (3555 psi) independent tank type A or B. for 5083–0 aluminum; C=a characteristic tank dimension that is [CGD 74–289, 44 FR 26009, May 3, 1979, as the greatest of h, 0.75b, or 0.45 l; amended by CGD 82–063b, 48 FR 4782, Feb. 3, where: 1983] h=the height of the tank or the dimension in the vessel’s vertical direction, in meters; SECONDARY BARRIER b=the width of the tank or the dimension in the vessel’s transverse direction; in me- § 154.459 General. ters; and (a) Each cargo tank must have a sec- l=the length of the tank or the dimension in ondary barrier that meets Table 3 and the vessel’s longitudinal direction, in meters; and except as allowed in Table 3, the hull r=the specific gravity of the cargo. must not be the secondary barrier. (b) If the Commandant (CG–522) spe- § 154.452 External pressure. cially approves an integral tank for a design temperature at atmospheric The design external pressure, Pe, for an independent tank type C must be pressure lower than ¥10 °C (14 °F), the calculated by the following formula: integral tank must have a complete secondary barrier that meets § 154.460. Pe=P1+P2+P3+P4 (c) If the Commandant (CG–522) spe- where: cially approves a semi-membrane tank under the requirements of an inde- P1=the vacuum relief valve setting for tanks with a vacuum relief valve, or 24.5 kPa pendent tank type B, the semi-mem- gauge (3.55 psig) for tanks without a vacu- brane tank may have a partial sec- um relief valve. ondary barrier specially approved by P2=0, or the pressure relief valve setting for the Commandant (CG–522). an enclosed space containing any portion (d) If Table 3 allows the hull to be a of a pressure vessel. secondary barrier, the vessel’s hull P3=total compressive load in the tank shell must: from the weight of the tank, including corrosion allowance, weight of insulation, (1) Meet §§ 154.605 through 154.630; and weight of dome, weight of pipe tower and (2) Be designed for the stresses re- piping, the effect of the partially filled sulting from the design temperature.

TABLE 3—SECONDARY BARRIERS FOR TANKS

Cargo temperature (T) at atmospheric pressure Tank type ≥¥ ° ° T<–10 °C (14 °F)≥55 °C (¥67 ¥ ° ¥ ° T 10 C (14 F) °F) T< 55 C ( 67 F)

Integral ...... No secondary barrier required .... Tank type not usually allowed 1 .. Tank type not allowed. Membrane ...... do ...... Complete secondary barrier 1 ..... Complete secondary barrier. Semi-membrane ...... do ...... do ...... Do. Independent: Type A ...... do ...... do ...... Do. Type B ...... do ...... Partial secondary barrier 1 ...... Partial secondary barrier.

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TABLE 3—SECONDARY BARRIERS FOR TANKS—Continued

Cargo temperature (T) at atmospheric pressure Tank type ≥¥ ° ° T<–10 °C (14 °F)≥55 °C (¥67 ¥ ° ¥ ° T 10 C (14 F) °F) T< 55 C ( 67 F)

Type C ...... do ...... No secondary barrier required .... No secondary barrier required. 1 The hull may be a secondary barrier.

(14 U.S.C. 632; 46 U.S.C. 369, 375, and 416; 49 U.S.C. 1655(b); 49 CFR 1.46(b)) [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983]

§ 154.460 Design criteria. (2) Alaskan waters for the ambient cold condition of: At static angles of heel up through ¥ ° ° ° (i) Five knots air at 29 C (20 F); 30 , a secondary barrier must and (a) If a complete secondary barrier is (ii) Still sea water at ¥2 °C (28 °F). required in § 154.459, hold all of the liq- (b) The insulation for a cargo tank uid cargo in the cargo tank for at least with a secondary barrier must be de- 15 days under the dynamic loads in signed for the secondary barrier at the § 154.409(e); design temperature, and the ambient (b) If a partial secondary barrier is cold conditions listed under paragraph permitted in § 154.459, hold any leakage (a)(1) or paragraph (a)(2) of this sec- of liquid cargo corresponding to the ex- tion. tent of failure under § 154.448(a) after (c) The insulation material must be initial detection or primary barrier designed for any loads transmitted leak for at least 15 days under the dy- from adjacent hull structure. namic loads in § 154.409(e); (d) Insulation for cargo tank and pip- (c) If the primary barrier fails, pre- ing must meet § 38.05–20 of this chapter. vent the temperature of the vessel’s (e) Powder or granulated insulation structure from falling below the min- must: imum allowable service temperature of (1) Not compact from vibrations of the steel; and the vessel; (d) Be designed so that a cargo tank (2) Maintain the thermal conduc- failure does not cause a failure in the tivity listed under § 154.467; and secondary barrier. (3) Not exert a static pressure greater than the external design pressure of INSULATION the cargo tank under § 154.408.

§ 154.465 General. § 154.467 Submission of insulation information. If the design temperature is below ¥10 °C (14 °F), the cargo tank insula- The following insulation information tion must prevent the temperature of must be submitted for special approval the vessel’s hull from cooling below the by the Commandant (CG–522): minimum temperature allowed under (a) Compatibility with the cargo. § 154.172. (b) Solubility in the cargo. (c) Absorption of the cargo. § 154.466 Design criteria. (d) Shrinkage. (e) Aging. (a) The insulation for a cargo tank (f) Closed cell content. without a secondary barrier must be (g) Density. designed for the cargo tank at the de- (h) Mechanical properties. sign temperature, and for a vessel oper- (i) Thermal expansion. ating in: (j) Abrasion. (1) Any waters in the world, except (k) Cohesion. Alaskan waters, for the ambient cold (l) Thermal conductivity. condition of: (m) Resistance to vibrations. (i) Five knots air at ¥18 °C (0 °F); and (n) Resistance to fire and flame (ii) Still sea water at 0 °C (32 °F); or spread.

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(o) The manufacturing and installa- § 154.476 Cargo transfer devices and tion details of the insulation including: means. (1) Fabrication; (a) If a cargo pump in a cargo tank is (2) Storage; not accessible for repair when the (3) Handling; cargo tank is in use, the cargo tank (4) Erection; and must have an additional means of (5) Quality control. cargo transfer, such as another pump or gas pressurization. [CGD 74–289, 44 FR 26009, May 3, 1979, as (b) If cargo is transferred by gas pres- amended by CGD 82–063b, 48 FR 4782, Feb. 3, surization, the pressurizing line must 1983] have a safety relief valve that is set at SUPPORT SYSTEM less than 90 percent of the tank relief valve setting. § 154.470 General. CARGO AND PROCESS PIPING SYSTEMS (a) A cargo tank must have a support system that: § 154.500 Cargo and process piping (1) prevents movement of the cargo standards. tank under the static and dynamic The cargo liquid and vapor piping loads in § 154.406; and and process piping systems must meet (2) allows the cargo tank to contract the requirements in §§ 154.503 through and expand from temperature variation 154.562, Subparts 56.01 through 56.35, and hull deflection without exceeding §§ 56.50–20 and 56.50–105, and Subparts the design stress of the cargo tank and 56.60 through 56.97 of this chapter. the hull. (b) The cargo tank support system § 154.503 Piping and piping system components: Protection from move- must have a key that prevents rotation ment. of the cargo tank. Where thermal movement and move- (c) An independent tank must have ments of the cargo tank and the hull supports with an antiflotation system structure may cause stresses that ex- that withstands the upward force of ceed the design stresses, the piping and the tank without causing plastic defor- piping system components and cargo mation that endangers the hull struc- tanks must be protected from move- ture when the tank is: ment by: (1) Empty; and (a) Offsets; (2) In a hold space flooded to the (b) Loops; summer load draft of the vessel. (c) Bends; (d) Mechanical expansion joints in- § 154.471 Design criteria. cluding: (a) The cargo tank support system (1) Bellows; must be designed: (2) Slip joints; (1) For the loads in § 154.406(a); (3) Ball joints; or (2) To not exceed the allowable stress (e) Other means specially approved under this part at a static angle of heel by the Commandant (CG–522). of 30°; [CGD 74–289, 44 FR 26009, May 3, 1979, as (3) To withstand a collision force amended by CGD 82–063b, 48 FR 4782, Feb. 3, equal to at least one-half the weight of 1983] the cargo tank and cargo from forward and one-quarter the weight of the § 154.506 Mechanical expansion joint: Limits in a piping system. cargo tank and cargo from aft; and (4) For the largest resulting accelera- Mechanical expansion joints in a pip- tion in Figure 1, including rotational ing system outside of a cargo tank: and translation effects. (a) May be installed only if offsets, (b) The cargo tank support design loops or bends cannot be installed due to limited space or piping arrange- loads in paragraph (a) of this section ment; may be analyzed separately. (b) Must be a bellows type; and

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(c) Must not have insulation or a to relieve cargo pressure and to remove cover unless necessary to prevent dam- liquid cargo. age. § 154.519 Piping relief valves. § 154.512 Piping: Thermal isolation. (a) The liquid relief valve that pro- Low temperature piping must be tects the cargo piping system from liq- thermally isolated from any adjacent uid pressure exceeding the design pres- hull structure to prevent the tempera- sure must discharge into: ture of that structure from dropping (1) A cargo tank; or below the minimum temperature for the hull material under § 154.170. (2) A cargo vent mast if that vent mast has a means for the detection and § 154.514 Piping: Electrical bonding. removal of the liquid cargo that is spe- (a) Cargo tanks or piping that are cially approved by the Commandant separated from the hull structure by (CG–522). thermal isolation must be electrically (b) A relief valve on a cargo pump bonded to the hull structure by a meth- that protects the cargo piping system od under paragraph (c) of this section. must discharge into the pump suction. (b) A pipe joint or a hose connection [CGD 74–289, 44 FR 26009, May 3, 1979, as fitting that has a gasket must be elec- amended by CGD 82–063b, 48 FR 4782, Feb. 3, trically bonded by a method under 1983] paragraph (c) of this section that bonds: § 154.520 Piping calculations. (1) Both sides of the connection to A piping system must be designed to the hull structure; or meet the allowable stress values under (2) Each side of the connection to the § 56.07–10 of this chapter and, if the de- other side. ¥ ° ¥ ° (c) An electrical bond must be made sign temperature is 110 C ( 166 F) by at least one of the following meth- or lower, the stress analysis must be ods: specially approved by the Commandant (1) A metal bonding strap attached (CG–522) and must include: by welding or bolting. (a) Pipe weight loads; (2) Two or more bolts that give metal (b) Acceleration loads; to metal contact between the bolts and (c) Internal pressure loads; the parts to be bonded. (d) Thermal loads; and (3) Metal to metal contact between (e) Loads from the hull. adjacent parts under designed operating conditions. [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, § 154.516 Piping: Hull protection. 1983] A vessel’s hull must be protected § 154.522 Materials for piping. from low temperature liquid leakage by a drip pan, or other means specially (a) The materials for piping systems approved by the Commandant (CG–522), must meet § 154.625 for the minimum at: design temperature of the piping, ex- (a) Each piping connection disman- cept the material for open ended vent tled on a routine basis; piping may be specially approved by (b) Cargo discharge and loading the Commandant (CG–522) if: manifolds; and (1) The temperature of the cargo at (c) Pump seals. the pressure relief valve setting is ¥55 °C (¥67 °F) or warmer; and [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, (2) Liquid can not discharge to the 1983] vent piping. (b) Materials for piping outside the § 154.517 Piping: Liquid pressure re- cargo tanks must have a melting point lief. of at least 925 °C (1697 °F), except for The cargo loading and discharge short lengths of pipes with fire resist- crossover headers, cargo hoses, and ing insulation that are attached to the cargo loading arms must have means cargo tanks.

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§ 154.524 Piping joints: Welded and (c) If the piping is designed for a tem- screwed couplings. perature lower than ¥55 °C (¥67 °F), Pipe lengths without flanges must be the pipe flange must be a welding neck joined by one of the following: type. (a) A butt welded joint with complete penetration at the weld root except § 154.530 Valves: Cargo tank MARVS that for design temperatures colder 69 kPa gauge (10 psig) or lower. than ¥10 °C (14 °F) the butt weld must (a) Except those connections for tank be double welded or must be welded safety relief valves and for liquid level using: gauging devices other than those under (1) A backing ring that for design §§ 154.536 and 154.1310, liquid and vapor pressures greater than 979 kPa gauge connections on a cargo tank with a (142 psig) must be removed after the MARVS of 69 kPa gauge (10 psig) or weld is completed; lower must have shut-off valves that— (2) A consumable insert; or (1) Are located as close to the tank as (3) An inert gas back-up on the first practical; weld pass. (2) Are capable of local manual oper- (b) A slip-on welded joint with ation; and sleeves and attachment welds is al- (3) May be remotely controlled. lowed for an open ended pipe with an external diameter of 50 mm (2 in.) or (b) The cargo piping system for a less and a design temperature of ¥55 °C cargo tank with a MARVS of 69 kPa (¥67 °F), or warmer. gauge (10 psig) or lower must have at (c) A socket weld fitting with attach- least one remotely controlled quick- ment welds is allowed for pipe with an closing shut-off valve for closing liquid external diameter of 50 mm (2 in.) or and vapor piping between vessel and less and a design temperature of ¥55 °C shore that meets §§ 154.540 and 154.544. ¥ ° ( 67 F) or warmer. [CGD 74–289, 44 FR 26009, May 3, 1979, as (d) Screwed couplings are allowed for amended by CGD 77–069, 52 FR 31630, Aug. 21, instrumentation and control piping 1987] that meets § 56.30–20 and § 56.50–105 (a)(4) and (b)(4) of this chapter. § 154.532 Valves: Cargo tank MARVS (e) A method or fitting specially ap- greater than 69 kPa gauge (10 psig). proved by the Commandant (CG–522). (a) Except connections for tank safe- [CGD 74–289, 44 FR 26009, May 3, 1979, as ty relief valves and except for liquid amended by CGD 82–063b, 48 FR 4782, Feb. 3, level gauging devices other than those 1983] under §§ 154.536 and 154.1310, liquid and vapor connections on a cargo tank with § 154.526 Piping joints: Flange connec- a MARVS greater than 69 kPa gauge tion. (10 psig) must have, as close to the Flange connections for pipe joints tank as practical, a: must meet § 56.30–10 and § 56.50–105 (a)(4) (1) Stop valve capable of local man- and (b)(4) of this chapter. ual operation; and § 154.528 Piping joints: Flange type. (2) A remotely controlled quick-closing shut-off valve. (a) A flange must be one of the fol- (b) If the nominal pipe size of a liquid lowing types: or vapor connection is less than 50 mm (1) Welding neck. (2 in.), an excess flow valve may be sub- (2) Slip-on. (3) Socket weld. stituted for the quick-closing valve (b) If the piping is designed for a tem- under paragraph (a) of this section. perature between ¥10 °C (14 °F) and (c) One valve may be substituted for ¥55 °C (¥67 °F), the pipe flange may be the manual controlled stop valve and a: the remotely controlled quick-closing (1) Slip-on type, if the nominal pipe shut-off valve required under para- size is 100 mm (4 in.) or less; graph (a) of this section if that valve: (2) Socket weld, if the nominal pipe (1) Meets §§ 154.540 and 154.544; and size is 50 mm (2 in.) or less; or (2) Is capable of local manual oper- (3) Welding neck. ation.

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§ 154.534 Cargo pumps and cargo com- § 154.546 Excess flow valve: Closing pressors. flow. Cargo pumps and cargo compressors (a) The rated closing flow of vapor or must shut-down automatically when liquid cargo for an excess flow valve the quick-closing shut-off valves under must be specially approved by the §§ 154.530 and 154.532 are closed by the Commandant (CG–522). emergency shut-down system required (b) An excess flow valve allowed under § 154.540. under § 154.532(b) must close automati- § 154.536 Cargo tank gauging and cally at the rated closing flow. measuring connections. [CGD 74–289, 44 FR 26009, May 3, 1979, as Unless the outward flow from a cargo amended by CGD 82–063b, 48 FR 4782, Feb. 3, tank is less than the flow through a 1983] circular hole of 1.4 mm (0.055 in.) in diameter, cargo tank connections for § 154.548 Cargo piping: Flow capacity. gauging or measuring devices must Piping with an excess flow valve have the excess flow, shut-off, or quick- must have a vapor or liquid flow capac- closing shut-off valves under § 154.530 or ity that is greater than the rated clos- § 154.532. ing flow under § 154.546.

§ 154.538 Cargo transfer connection. § 154.550 Excess flow valve: Bypass. A cargo transfer connection must If the excess flow valve allowed under have a: § 154.532(b) has a bypass, the bypass (a) Remotely controlled quick-clos- must be of 1.0 mm (0.0394 in.) or less in ing shut-off valve that meets §§ 154.540 and 154.544; or diameter. (b) Blank flange. CARGO HOSE § 154.540 Quick-closing shut-off valves: Emergency shut-down system. § 154.551 Cargo hose: General. The quick-closing shut-off valves Each of the vessel’s liquid and vapor under §§ 154.530, 154.532, and 154.538 must cargo hose for loading or discharging have an emergency shut-down system cargo must meet §§ 154.552 through that: 154.562. (a) Closes all the valves; (b) Is actuated by a single control in § 154.552 Cargo hose: Compatibility. at least two locations remote from the Liquid and vapor cargo hoses must: quick-closing valves; (a) Not chemically react with the (c) Is actuated by a single control in cargo; and each cargo control station under (b) Withstand design temperature. § 154.320; and (d) Has fusible elements at each tank § 154.554 Cargo hose: Bursting pres- dome and cargo loading and discharge sure. manifold that melt between 98 °C (208 °F) and 104 °C (220 °F) and actuate the Cargo hose that may be exposed to emergency shut-down system. the pressure in the cargo tank, the cargo pump discharge, or the vapor § 154.544 Quick-closing shut-off valves. compressor discharge must have a The quick-closing shut-off valve bursting pressure of at least five times under §§ 154.530, 154.532 and 154.538 must: the maximum working pressure on the (a) Be a shut-off valve; hose during cargo transfer. (b) Close from the time of actuation in 30 seconds or less; § 154.556 Cargo hose: Maximum work- (c) Be the fail-closed type; and ing pressure. (d) Be capable of local manual clos- A cargo hose must have a maximum ing. working pressure not less than the [CGD 74–289, 44 FR 26009, May 3, 1979, as maximum pressure to which it may be amended by CGD 77–069, 52 FR 31630, Aug. 21, subjected and at least 1034 kPa gauge 1987] (150 psig).

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§ 154.558 Cargo hose: Marking. see § 154.1) and § 54.01–18(b)(5) of this chapter. Each cargo hose must be marked with the: (d) For integral and independent type A tanks, the American Bureau of Ship- (a) Maximum working pressure; and ping’s grade D not exceeding 20 mm (b) Minimum service temperature for (0.787 in.) in thickness, and Grade E service at other than ambient tempera- hull structural steel are allowed if the ture. steel meets § 54.05–10 of this chapter. § 154.560 Cargo hose: Prototype test. (e) The tensile properties under paragraph (a) of this section must be deter- (a) Each cargo hose must be of a type mined for: that passes a prototype test at a pres- (1) Each plate as rolled; and sure of at least five times its maximum (2) Each five short ton batch of forg- working pressure at or below the min- ings, forged or rolled fittings, and imum service temperature. forged or rolled bars and shapes. (b) Each cargo hose must not be the (f) The specified yield strength must hose used in the prototype test. not exceed 637 MPa (92.43 Ksi) and when § 154.562 Cargo hose: Hydrostatic test. it exceeds 490 MPa (71.10 Ksi), the hard- ness of the weld and the heat affected Each cargo hose must pass a hydro- zone must be specially approved by the static pressure test at ambient tem- Commandant (CG–522). perature of at least one and a half (g) The Charpy V-notch impact en- times its specified maximum working ergy must be determined for: pressure but not more than two-fifths (1) Each plate as rolled; and its bursting pressure. (2) Each five short ton batch of forgings, forged or rolled fittings and rolled MATERIALS or forged bars and shapes. § 154.605 Toughness test. (h) The orientation and required impact energy of a 10 mm × 10 mm (0.394 (a) Each toughness test under in. × 0.394 in.) Charpy V-notch specimen §§ 154.610 through 154.625 must meet must be: Subpart 54.05 of this chapter. (1) For plates; transverse specimen (b) If subsize test specimens are used and 27.4 J (20 ft-lbs); and for the Charpy V-notch toughness test, (2) For forgings, forged and rolled fit- the Charpy V-notch energy must meet tings and rolled and forged bars: longi- Table 54.05–20 (a) of this chapter. tudinal specimen and 41.1 J (30 ft-lbs). § 154.610 Design temperature not cold- (i) The test temperature of the er than 0 ≥C (32 ≥F). Charpy V-notch specimens is as follows: Materials for cargo tanks for a design temperature not colder than 0 °C (32 °F) Material Thickness Test Temperature must meet the following: ≤ ° ° (a) The tank materials must meet t 20 mm (0.788 in.) ...... 0 C (32 F) 20< t<30 mm (1.182 in.) ...... ¥20 °C (¥4 °F) §§ 54.25–1 and 54.25–3 of this chapter. 30< t<40 mm (1.576 in.) ...... ¥40 °C (¥40 °F) (b) Plates, forgings, rolled and forged bars and shapes must be carbon man- [CGD 74–289, 44 FR 26009, May 3, 1979, as ganese steel or other material allowed amended by CGD 82–063b, 48 FR 4782, Feb. 3, under §§ 154.615, 154.620, and 154.625. 1983; USCG–1999–5151, 64 FR 67183, Dec. 1, (c) Plates must be normalized or 1999] quenched and tempered and where the thickness exceeds 20 mm (0.787 in.), § 154.615 Design temperature below 0 made with fine grain practice, aus- ≥C (32 ≥F) and down to Ø55 ≥C (Ø67 ≥ tenitic grain size of five or finer. A con- F). trol rolling procedure may be sub- Plates, forgings, forged or rolled or stituted for normalizing if specially ap- forged bars and shapes for cargo tanks proved by the Commandant (CG–522). and secondary barriers for a design Plate for an independent tank type C temperature below 0 °C (32 °F) and must also meet the requirements of down to ¥55 °C (¥67 °F) must meet ASTM A 20 (incorporated by reference, § 54.25–10 of this chapter.

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§ 154.620 Design temperature below (b) Welding consumables used in Ø55 ≥C (Ø67 ≥F) and down to Ø165 welding cargo tanks must meet § 57.02– ≥C (Ø265 ≥F). 4 of this chapter. Plates, forgings and forged or rolled (c) Independent tanks must meet the fittings, and rolled, forged or extruded following: bars and shapes for cargo tanks, sec- (1) Each welded joint of the shells ondary barriers, and process pressure must be a full penetration butt weld, vessels for a design temperature below except dome to shell connections may ¥55 °C (¥67 °F) and down to ¥165 °C have full penetration tee welds. (¥265 °F) must: (2) Each nozzle weld must be of the (a) Meet § 54.25–10(b)(2), § 54.25–15, or full penetration type, except for small § 54.25–20 of this chapter; or penetrations on domes. (b) Be of an aluminum alloy that is (d) Each welded joint in an inde- specially approved by the Commandant pendent tank type C or in a process (CG–522). pressure vessel must meet Part 54 of this chapter, except that any backing [CGD 74–289, 44 FR 26009, May 3, 1979, as rings must be removed unless specially amended by CGD 82–063b, 48 FR 4782, Feb. 3, approved by the Commandant (CG–522). 1983] (e) Each welded joint in a membrane tank must meet the quality assurance § 154.625 Design temperature below 0 measures, weld procedure qualifica- ≥C (32 ≥F) and down to Ø165 ≥C (Ø265 ≥F). tion, design details, materials, construction, inspection, and production Pipes, tubes, forgings, castings, bolt- testing of components developed during, and nuts for cargo and process piping the prototype testing program that ing for a design temperature below 0 °C are specially approved by the Com- (32 °F) and down to ¥165 °C (¥265 °F) mandant (CG–522) under this part. must meet § 56.50–105 of this chapter. (f) Each welded joint in a semi-membrane tank must meet paragraph (c) or § 154.630 Cargo tank material. (e) of this section. (a) If a material of a cargo tank is [CGD 74–289, 44 FR 26009, May 3, 1979, as not listed in §§ 154.610, 154.615 or amended by CGD 82–063b, 48 FR 4782, Feb. 3, § 154.620, the allowable stress of that 1983] material must be specially approved by the Commandant (CG–522). § 154.655 Stress relief for independent (b) For cargo tanks of aluminum al- tanks type C. loys with welded connections, the min- For a design temperature colder than imum tensile strength (sB) for the cal- ¥10 °C (14 °F), an independent tank culations under § 154.440, § 154.447 and type C of: § 154.450 must be the minimum tensile (a) Carbon and carbon-manganese strength of the alloy in the annealed steel must be stress relieved by post- condition. weld heat treatment under § 54.25–7 of (c) Increased yield strength and ten- this chapter or by mechanical stress sile strength of a material at low tem- relief under Subpart 54.30 of this chap- perature for independent tanks type A, ter; or B, and C must be specially approved by (b) Materials other than carbon and the Commandant (CG–522). carbon manganese steel must be stress relieved as required under Part 54 of [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, this chapter. The procedure for stress 1983] relieving must be specially approved by the Commandant (CG–522). CONSTRUCTION § 154.660 Pipe welding. § 154.650 Cargo tank and process pres- (a) Pipe welding must meet Part 57 of sure vessel welding. this chapter. (a) Cargo tank and process pressure (b) Longitudinal butt welds, in piping vessel welding must meet Subpart 54.05 that does not meet a standard or speci- and Part 57 of this chapter. fication under § 56.60–1 of this chapter,

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and girth butt welds must meet the fol- with the largest unit in the system in- lowing: operative; or (1) Butt welds of pipes made from (2) Have a standby unit with a capac- carbon, carbon manganese, or low alloy ity at least equal to the capacity of the steels must meet § 56.50–105 of this largest refrigeration unit in the sys- chapter, including the requirements for tem. post-weld heat treatment. (b) For the purpose of this section, a (2) Except for piping inside an inde- ‘‘refrigeration unit’’ includes a com- pendent cargo tank type A, B, or C, pressor and its motors and controls. butt welds must be 100% radiographi- (c) Each refrigeration system must: cally tested if the design temperature (1) Have a heat exchanger with an ex- is lower than ¥10 °C (14 °F), and: cess capacity of 25 percent of the re- (i) The wall thickness is greater than quired capacity; or 10 mm (0.394 in.); or (2) A standby heat exchanger. (ii) The nominal pipe diameter is (d) Where cooling water is used in a greater than 100 mm (nominal 4 in.). refrigeration system: (3) If Table 4 references this section, (1) The cooling water pump or pumps butt welds for deck cargo piping ex- must be used exclusively for the sys- ceeding 75 mm (3 in.) in diameter must tem; be 100% radiographically tested. (2) Each pump must have suction (4) Butt welds of pipes not meeting lines from sea chests on the port and paragraph (b)(2) or (b)(3) of this section starboard sides of the vessel; and must meet the non-destructive testing (3) There must be a standby pump, requirements under Subpart 56.95 of that may be used for: this chapter. (i) Non-essential purposes on the ves- § 154.665 Welding procedures. sel; or (ii) Essential purposes on the vessel, Welding procedure tests for cargo if the pump is sized to simultaneously tanks for a design temperature colder provide for the capacity requirements than 0 °C (32 °F), process pressure ves- for the essential purposes and the re- sels, and piping must meet § 54.05–15 frigeration cooling water. and Subpart 57.03 of this chapter. (e) Each refrigeration system must CARGO PRESSURE AND TEMPERATURE use refrigerants that are compatible CONTROL with the cargo and, for cascade units, with each other. § 154.701 Cargo pressure and tempera- (f) The pressure of the heat transfer ture control: General. fluid in each cooling coil in a tank Except as allowed under § 154.703, must be greater than the pressure of cargo tanks must: the cargo. (a) Have their safety relief valves set § 154.703 Methane (LNG). at a pressure equal to or greater than the vapor pressure of the cargo at 45 °C Unless a cargo tank carrying meth- (113 °F) but not greater than the ane (LNG) can withstand the pressure MARVS under § 154.405; or build up due to boil-off for 21 days, the (b) Be refrigerated by a system meet- pressure in the cargo tank must be ing § 154.702, and each refrigerated in- maintained below the set pressure of compatible cargo refrigerated by a sep- the safety relief valve for at least 21 arate system. days by: (a) A refrigeration system that meets § 154.702 Refrigerated carriage. § 154.702; (a) Each refrigeration system must: (b) A waste heat or catalytic furnace (1) Have enough capacity to maintain that burns boil-off gas, and: the cargo vapor pressure in each cargo (1) Maintains the stack exhaust tem- tank served by the system below the perature below 535 °C (995 °F); set pressure of the relief valves under (2) Exhibits no visible flame; and ambient temperatures of 45 °C (113 °F) (3) Is specially approved by the Com- still air and 32 °C (89.6 °F) still water mandant (CG–522);

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(c) Boilers, inert gas generators, and (b) Each double wall pipe or vent combustion engines in the main propel- duct must terminate in the ventilation ling machinery space that use boil-off hood or casing under § 154.707(a). Con- gas as fuel; or tinuous gas detection must be installed (d) Equipment for services, other to indicate leaks in the hood or casing. than those under paragraph (c) of this section, that use boil-off gas as fuel § 154.707 Cargo boil-off as fuel: Ven- and that are located: tilation. (1) In the main propelling machinery (a) A ventilation hood or casing must space; or be installed in areas occupied by (2) a space specially approved by the flanges, valves, and piping at the fuel Commandant (CG–522). burner to cause air to sweep across them and be exhausted at the top of [CGD 74–289, 44 FR 26009, May 3, 1979, as the hood or casing. amended by CGD 82–063b, 48 FR 4782, Feb. 3, (b) The hood or casing must be me- 1983] chanically exhaust-ventilated and § 154.705 Cargo boil-off as fuel: Gen- meet § 154.1205. eral. (c) The ventilated hood or casing must have an airflow rate specially ap- (a) Each cargo boil-off fuel system proved by the Commandant. under § 154.703(c) must meet §§ 154.706 through 154.709. § 154.708 Cargo boil-off as fuel: Valves. (b) The piping in the cargo boil-off (a) Gas fuel lines to the gas con- fuel system must have a connection for suming equipment must have two fail- introducing inert gas and for gas free- closed automatic valves in series. A ing the piping in the machinery space. third valve, designed to fail-open, must (c) A gas fired main propulsion boiler vent that portion of pipe between the or combustion engine must have a fuel two series valves to the open atmos- oil fired pilot that maintains fuel flow phere. as required under § 154.1854 if the gas (b) The valves under paragraph (a) of fuel supply is cut-off. this section must be arranged so that loss of boiler forced draft, flame fail- § 154.706 Cargo boil-off as fuel: Fuel ure, or abnormal gas fuel supply pres- lines. sure automatically causes the two se- (a) Gas fuel lines must not pass ries valves to close and the vent valve through accommodation, service, or to open. The function of one of the se- control spaces. Each gas fuel line pass- ries valves and the vent valve may be ing through other spaces must have a performed by a single three-way valve. master gas fuel valve and meet one of (c) A master gas fuel valve must be the following: located outside the machinery space, (1) The fuel line must be a double- but be operable from inside the ma- walled piping system with the annular chinery space and at the valve. The space containing an inert gas at a pres- valve must automatically close when sure greater than the fuel pressure. there is: Visual and audible alarms must be in- (1) A gas leak detected under stalled at the machinery control sta- § 154.706(a)(2) or § 154.706(b); tion to indicate loss of inert gas pres- (2) Loss of the ventilation under sure. § 154.706(a)(2) or § 154.707(c); or (2) The fuel line must be installed in (3) Loss of inert gas pressure within a mechanically exhaust-ventilated pipe the double-walled piping system under or duct, having a rate of air change of § 154.706(a)(1). at least 30 changes per hour. The pressure in the space between the inner § 154.709 Cargo boil-off as fuel: Gas de- pipe and outer pipe or duct must be tection equipment. maintained at less than atmospheric (a) The continuous gas detection sys- pressure. Continuous gas detection tem required under § 154.706(a)(2) and must be installed to detect leaks in the (b) must: ventilated space. The ventilation sys- (1) Meet § 154.1350(c), (d), and (j) tem must meet § 154.1205. through (s); and

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(2) Have a device that: (i) The stop valves are interlocked or (i) Activates an audible and visual arranged so that only one pressure re- alarm at the machinery control station lief valve is out of service at any one and in the wheelhouse if the methane time; concentration reaches 1.5 percent by (ii) The interlock arrangement auto- volume; and matically shows the relief valve that is (ii) Closes the master gas fuel valve out of service; and required under § 154.708(c) before the (iii) The other valves have the reliev- methane concentration reaches 3 per- ing capacity required under § 154.806, or cent by volume. all relief valves on the cargo tank are (b) The number and arrangement of the same size and there is a spare of gas sampling points must be specially the same size, or there is a spare for approved by the Commandant (CG–522). each relief valve on a cargo tank. (d) The pressure relief system must: [CGD 74–289, 44 FR 26009, May 3, 1979, as (1) If the design temperature is below amended by CGD 82–063b, 48 FR 4782, Feb. 3, ° ° 1983] 0 C (32 F), be designed to prevent the relief valve from becoming inoperative CARGO VENT SYSTEMS due to ice formation; and (2) Be designed to prevent chattering § 154.801 Pressure relief systems. of the relief valve. (a) Each cargo tank that has a vol- [CGD 74–289, 44 FR 26009, May 3, 1979; 44 FR ume of 20m3 (706 ft.3) or less must have 59234, Oct. 15, 1979] at least one pressure relief valve. (b) Each cargo tank that has a vol- § 154.802 Alternate pressure relief set- ume of more than 20m3 (706 ft.3) must tings. have at least two pressure relief valves Cargo tanks with more than one re- of the same nominal relieving capac- lief valve setting must have one of the ity. following arrangements: (c) Each pressure relief valve must: (a) Relief valves that: (1) Meet Subpart 162.018 of this chap- (1) Are set and sealed under ter or, if the valve is also capable of § 154.801(c); vacuum relief and the MARVS is 69 (2) Have the capacity under § 154.806; kPa gauge (10 psig) or less, Subpart and 162.017 of this chapter, and have at (3) Are interlocked so that cargo least the capacity required under tank venting can occur at any time. § 154.806; (b) Relief valves that have spacer (2) Not be set for a higher pressure pieces or springs that: than the MARVS; (1) Change the set pressure without (3) Have a fitting for sealing wire pressure testing to verify the new set- that prevents the set pressure from ting; and being changed without breaking the (2) Can be installed without breaking sealing wire; the sealing wire required under (4) Be fitted on the cargo tank to re- § 154.801(c)(3). main in the vapor phase under conditions of 15° list and of 0.015 L trim by § 154.804 Vacuum protection. both the bow and stern; (a) Except as allowed under para- (5) Vent to a vent mast under graph (b) of this section, each cargo § 154.805, except a relief valve may vent tank must have a vacuum protection to a common tank relief valve header if system meeting paragraph (a)(1) of this the back pressure is included in deter- section and either paragraph (a)(2) or mining the required capacity under (a)(3) of this section. § 154.806; (1) There must be a means of testing (6) Not vent to a common header or the operation of the system. common vent mast if the relief valves (2) There must be a pressure switch are connected to cargo tanks carrying that operates an audible and visual chemically incompatible cargoes; alarm in the cargo control station (7) Not have any stop valves or other identifying the tank and the alarm means of isolating the cargo tank from condition and a remote group audible its relief valve unless: and visual alarm in the wheelhouse.

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Both alarms must be set at or below dation, service, control station, or 80% of the maximum external design other gas-safe space, except that for pressure differential of the cargo vessels less than 90m (295 ft.) in length, tanks. There must be a second, inde- shorter distances may be specially ap- pendent pressure switch that automati- proved by the Commandant (CG–522); cally shuts off all suction of cargo liq- (f) For a containment system, except uid or vapor from the cargo tank and a cargo tank, does not exhaust vapor secures any refrigeration of that tank within a radius of 10m (32.8 ft.) or less at or below the maximum external de- from any forced or natural ventilation sign pressure differential. intake or other opening to an accom- (3) There must be a vacuum relief modation, service, control station, or valve that: other gas-safe space; (i) Has a gas flow capacity at least (g) Has drains to remove any liquid equal to the maximum cargo discharge that may accumulate; and rate per tank; (h) Prevents accumulations of liquid (ii) Is set to open at or below the at the relief valves. maximum external design pressure differential; and [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, (iii) Admits inert gas, cargo vapor 1983] from a source other than a cargo vapor header, or air except as prohibited § 154.806 Capacity of pressure relief under § 154.1710. valves. (b) A vacuum protection system does Pressure relief valves for each cargo not have to be installed if the cargo tank must have a combined relief ca- tank is designed to withstand: pacity, including the effects of back (1) A maximum external pressure dif- pressure from vent piping, headers, and ferential exceeding 24.5 kPa gauge (3.55 masts, to discharge the greater of the psig); and following with not more than a 20% (2) The maximum external pressure rise in cargo tank pressure above the differential that can be obtained: set pressure of the relief valves: (i) At maximum discharge rates with (a) The maximum capacity of an in- no vapor return to the cargo tanks; stalled cargo tank inerting system if (ii) By operation of the cargo refrig- the maximum attainable working pres- eration system; or (iii) By drawing off vapor for use in sure of the cargo tank inerting system accordance with § 154.703(c) exceeds the set pressure of the relief valves. [CGD 74–289, 44 FR 26009, May 3, 1979; 44 FR (b) The quantity of vapors generated 59234, Oct. 15, 1979] from fire exposure that is calculated under § 54.15–25 of this chapter. § 154.805 Vent masts. Relief valves or common vent head- ATMOSPHERIC CONTROL IN CARGO ers from relief valves must discharge to CONTAINMENT SYSTEMS a vent mast that: (a) Discharges vertically upward; § 154.901 Atmospheric control within (b) Has a rain cap or other means of cargo tanks and cargo piping sys- preventing the entrance of rain or tems. snow; (a) Each vessel must have a piping (c) Has a screen with 25mm (1 inch) system for purging each cargo tank wire mesh or bars not more than 25mm and all cargo piping. (1 in.) apart on the discharge port; (b) The piping system must minimize (d) Extends at least to a height of B/ the pocketing of gas or air remaining 3 or 6m (19.7 ft.), whichever is greater, after purging. above the weather deck and 6m (19.7 (c) For cargo tanks certificated to ft.) above the working level; carry flammable gases, the piping sys- (e) For a cargo tank, does not ex- tem must allow purging the tank of haust cargo vapors within a radius of B flammable vapors before air is intro- or 25m (82 ft.), whichever is less, from duced and purging the tank of air be- any forced or natural ventilation in- fore the tank is filled with cargo. take or other opening to an accommo- (d) Each cargo tank must have:

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(1) Gas sampling points at its top and must be below the temperature of any bottom; and surface in those spaces or ¥45 °C (¥49 (2) Gas sampling line connections °F), whichever is warmer. that are valved and capped above the (c) For the temperatures and pres- deck. sures at which the gas is stored and used, storage vessels and inert gas pip- § 154.902 Atmospheric control within ing must meet §§ 154.450 and 154.500 re- hold and interbarrier spaces. spectively. (a) Vessels certificated to carry flammable cargo in cargo containment sys- § 154.904 Inert gas system: Controls. tems with full secondary barriers must The inert gas system must have: have an inert gas system or onboard (a) At least one check valve in the storage of inert gas that provides cargo area to prevent the back flow of enough inert gas to meet the require- cargo vapor into the inert gas system, ments of § 154.1848 for 30 days consump- or another means specially approved by tion. the Commandant (CG–522); (b) Vessels certificated to carry flam- (b) If the inert gas system is in the mable cargo in cargo containment sys- machinery space or another space out- tems with partial secondary barriers side the cargo area, a second check must: (1) Have an inert gas system or on- valve in the cargo area meeting para- board inert gas storage that can inert graph (a) of this section; the largest hold and interbarrier space (c) Automatic and manual inert gas so that the oxygen concentration is 8 pressure controls; and percent or less by volume; and (d) Valves to isolate each inerted (2) Meet paragraph (a) or (c)(2) of this space. section. [CGD 74–289, 44 FR 26009, May 3, 1979, as (c) Vessels certificated to carry only amended by CGD 82–063b, 48 FR 4782, Feb. 3, nonflammable cargo in cargo contain- 1983] ment systems with secondary barriers must: § 154.906 Inert gas generators. (1) Meet paragraph (a) of this section; The inert gas generator must: or (a) Produce an inert gas containing (2) Have air drying systems that re- less than 5% oxygen by volume; duce the dewpoint of air admitted to (b) Have a device to continuously hold or interbarrier spaces below the sample the discharge of the generator temperature of any surface in those for oxygen content; and spaces or ¥45 °C (¥49 °F), whichever is warmer. (c) Have an audible and visual alarm (d) Vessels with refrigerated inde- in the cargo control station that pendent tanks type C must have inert alarms when the inert gas contains 5% gas or air drying systems that reduce or more oxygen by volume. the dewpoint of any inert gas or air ad- § 154.908 Inert gas generator: Loca- mitted to the hold spaces below the tion. temperature of any surface in those spaces or ¥45 °C (¥49 °F), whichever is (a) Except as allowed in paragraph (b) warmer. of this section, an inert gas generator must be located in the main machinery § 154.903 Inert gas systems: General. space or a space that is not in the (a) Inert gas carried or generated to cargo area and does not have direct ac- meet §§ 154.901, 154.902, and 154.1848 cess to any accommodation, service, or must be non-flammable and non-reac- control space. tive with the cargoes that the vessel is (b) An inert gas generator that does certificated to carry and the materials not use flame burning equipment may of construction of the cargo tanks, be located in the cargo area if specially hold and interbarrier spaces, and insu- approved by the Commandant (CG–522). lation. [CGD 74–289, 44 FR 26009, May 3, 1979, as (b) The boiling point and dewpoint at amended by CGD 82–063b, 48 FR 4782, Feb. 3, atmospheric pressure of the inert gas 1983]

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§ 154.910 Inert gas piping: Location. (b) Intrinsically safe electrical equip- Inert gas piping must not pass ment and wiring may be in a gas-dan- through or terminate in an accommo- gerous space or zone. dation, service, or control space. (c) A submerged cargo pump motor may be in a cargo tank if: § 154.912 Inerted spaces: Relief de- (1) Low liquid level, motor current, vices. or pump discharge pressure automati- Inerted spaces must be fitted with re- cally shuts down power to the pump lief valves, rupture discs, or other de- motor if the pump loses suction; vices specially approved by the Com- (2) There is an audible and visual mandant (CG–522). alarm at the cargo control station that actuates if the motor shuts down under [CGD 74–289, 44 FR 26009, May 3, 1979; CGD 82– the requirements of paragraph (c)(1) of 063b, 48 FR 39629, Sept. 1, 1983] this section; and (3) There is a lockable circuit break- ELECTRICAL er or lockable switch that disconnects § 154.1000 Applicability. the power to the motor. (d) A supply cable for a submerged Sections 154.1005 through 154.1020 cargo pump motor may be in a hold apply to flammable cargo and ammo- space. nia carriers. (e) A hold space that has a tank that § 154.1002 Definition. is not required to have a secondary barrier under § 154.459 may only have: For the purposes of §§ 154.1005 through (1) Through runs of cable; 154.1020, ‘‘gas-dangerous’’ does not in- (2) Explosion-proof lighting fixtures; clude the weather deck of an ammonia (3) Depth sounding devices in gas- carrier. tight enclosures; (4) Log devices in gas-tight enclo- § 154.1005 Equipment approval. sures; and (a) Electrical equipment that is re- (5) Impressed current cathodic pro- quired to be intrinsically safe or explo- tection system electrodes in gas-tight sion proof under § 154.1010 must be spe- enclosures. cially approved by the Commandant or (f) A space that is separated by a gas- listed as intrinsically safe or explosion tight steel boundary from a hold space proof by an independent laboratory that has a cargo tank that must have a that is specially approved by the Com- secondary barrier, under the require- mandant (CG–522), for Class I Division I ments of § 154.459, may only have: locations and the Group that is speci- (1) Through runs of cable; fied in Table 4 for the cargo carried. (2) Explosion-proof lighting fixtures; (b) Each submerged cargo pump (3) Depth sounding devices in gas- motor installation must be specially tight enclosures; approved by the Commandant (CG–522). (4) Log devices in gastight enclo- (c) Electrical equipment that must sures; be intrinsically safe to meet § 154.1010 (5) Impressed current cathodic pro- must meet the definition in § 110.15– tection system electrodes in gastight 100(i) of this chapter. enclosures; (d) Electrical equipment that must (6) Explosion-proof motors that oper- be explosion proof to meet § 154.1010 ate cargo system valves or ballast sys- must meet § 110.15–65(e) of this chapter. tem valves; and [CGD 74–289, 44 FR 26009, May 3, 1979, as (7) Explosion-proof bells for general amended by CGD 82–063b, 48 FR 4782, Feb. 3, alarm systems. 1983] (g) A cargo handling room may only have: § 154.1010 Electrical equipment in gas- (1) Explosion-proof lighting fixtures; dangerous space or zone. and (a) Except as allowed in this section, (2) Explosion-proof bells for general electrical equipment must not be in- alarm systems. stalled in a gas-dangerous space or (h) A space for cargo hose storage zone. may only have:

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(1) Explosion-proof lighting fixtures; (c) Each on-deck storage vessel for and flammable or toxic liquefied gases; (2) Through runs of cable. (d) Each cargo discharge and loading (i) A space that has cargo piping may manifold; only have: (e) Each quick-closing valve under (1) Explosion-proof lighting fixtures; §§ 154.530, 154.532, and 154.538, and other and control valves essential to cargo flow; (2) Through runs of cable. (f) Each boundary facing the cargo (j) A gas-dangerous zone on the area of each superstructure that con- weather deck may only have: tains accommodation, service, or con- (1) Explosion-proof equipment that is trol spaces; for the operation of the vessel; and (g) Each boundary facing the cargo (2) Through runs of cable. area of each deckhouse that contains (k) A space, except those under para- accommodation, service, or control graphs (e) through (j) of this section, spaces; and that has a direct opening to a gas-dan- (h) Each boundary of each deckhouse gerous space or zone may only have the that is within the cargo area and that electrical equipment allowed in the is manned during navigation of the ves- gas-dangerous space or zone. sel or during cargo transfer operations, except the deckhouse roof if it is 2.4 m § 154.1015 Lighting in gas-dangerous (8 ft.) or higher above the cargo con- space. taining structure. (a) Each gas-dangerous space that [CGD 74–289, 44 FR 26009, May 3, 1979; 44 FR has lighting fixtures must have at least 59234, Oct. 15, 1979] two branch circuits for lighting. (b) Each switch and each overcurrent § 154.1115 Discharge. protective device for any lighting cir- (a) The discharge density of each cuit that is in a gas-dangerous space water spray system must be at least: must open each conductor of the cir- (1) 10000 cm3/m2/min. (0.25 gpm/ft.2) cuit simultaneously. over each horizontal surface; and (c) Each switch and each overcurrent (2) 4000 cm3/m2/min. (0.10 gpm/ft.2) protective device for lighting in a gas- against vertical surface, including the dangerous space must be in a gas-safe water rundown. space. (b) The water spray protection under § 154.1020 Emergency power. § 154.1110 (d) and (e) must cover an area in a horizontal plane extending at least The emergency generator must be de- 0.5 m (19 in.) in each direction from the signed to allow operation at the final pipes, fittings, and valves, or the area angle of heel under § 154.230(a). of the drip tray, whichever is greater. FIREFIGHTING § 154.1120 Nozzles. Firefighting System: Exterior Water Spray (a) Nozzles for the water spray system must be spaced to provide the min- § 154.1105 Exterior water spray sys- imum discharge density under § 154.1115 tem: General. in each part of the protected area. Each liquefied flammable gas vessel (b) The vertical distance between and each liquefied toxic gas vessel water spray nozzles for the protection must have an exterior water spray sys- of vertical surfaces must be 3.7 m (12 tem that meets §§ 154.1110 through ft.) or less. 154.1135. § 154.1125 Pipes, fittings, and valves. § 154.1110 Areas protected by system. (a) Each pipe, fitting, and valve for Each water spray system must pro- each water spray system must meet tect: Part 56 of this chapter. (a) All cargo tank surfaces that are (b) Each water spray main that pro- not covered by the vessel’s hull struc- tects more than one area listed in ture or a steel cover; § 154.1110 must have at least one isola- (b) Each cargo tank dome; tion valve at each branch connection

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and at least one isolation valve down- (2) The largest section that includes stream of each branch connection to the required protection under § 154.1110 isolate damaged sections. (a), (b), and (c). (c) Each valved cross-connection from the water spray system to the fire [CGD 74–289, 44 FR 26009, May 3, 1979, as main must be outside of the cargo area. amended by CGD 82–063b, 48 FR 4782, Feb. 3, (d) Each pipe, fitting, and valve for 1983] the water spray system must be made FIREFIGHTING SYSTEM: DRY CHEMICAL of fire resistant and corrosion resistant materials, such as galvanized steel or § 154.1140 Dry chemical system: Gen- galvanized iron pipe. eral. (e) Each water spray system must have a means of drainage to prevent Each liquefied flammable gas carrier corrosion of the system and freezing of must have a dry chemical firefighting accumulated water in subfreezing tem- system that meets §§ 154.1145 through peratures. 154.1170, Part 56 and Subpart 162.039 of (f) Each water spray system must this chapter. have a dirt strainer that is located at the water spray system manifold or § 154.1145 Dry chemical supply. pump. (a) A vessel with a cargo carrying capacity less that 1000 m3 (35,300 ft.3) § 154.1130 Sections. must have at least one self-contained (a) If a water spray system is divided dry chemical storage unit for the cargo into sections, each section must at area with an independent inert gas least include the entire deck area pressurizing source adjacent to each bounded by the length of a cargo tank unit. and the full beam of the vessel. (b) A vessel with a cargo carrying ca- (b) If a water spray system is divided pacity of 1000 m3 (35,300 ft.3) or more into sections, the control valves must must have at least two self-contained be at a single manifold that is aft of dry chemical storage units for the the cargo area. cargo area with an independent inert § 154.1135 Pumps. gas pressurizing source adjacent to (a) Water to the water spray system each unit. must be supplied by: (c) A vessel with bow and stern load- (1) A pump that is only for the use of ing and discharge areas must have at the system; least one self-contained dry chemical (2) A fire pump; or storage unit with an independent inert (3) A pump specially approved by the gas pressurizing source adjacent to the Commandant (CG–522). unit for each area. (b) Operation of a water spray system (d) Each dry chemical storage unit must not interfere with simultaneous and associated piping must be designed operation of the fire main system at its for: required capacity. There must be a (1) Sequential discharge of each hose valved cross-connection between the line and each monitor for 45 seconds; two systems. and (c) Except as allowed under para- (2) Simultaneous discharge of all graph (d) of this section, each pump for hose lines and monitors for 45 seconds. each water spray system must have the (e) Each fully charged dry chemical capacity to simultaneously supply all areas named in § 154.1110. storage unit must have the greater of (d) If the water spray system is di- the following: vided into sections, the pump under (1) Enough dry chemical to provide paragraph (a) of this section must have for sequential discharge of each at- the capacity to simultaneously supply tached hose and monitor for 45 seconds. the required discharge density under (2) Enough dry chemical to provide § 154.1115(a) for: for simultaneous discharge of all at- (1) The areas in §§ 154.1110(f) through tached hoses and monitors for 45 sec- (h) and 154.1115(b); and onds.

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§ 154.1150 Distribution of dry chem- (2) Except for pre-aimed monitors, ical. controlled from a location other than (a) All locations on the above deck the monitor and manifold area. cargo area and the cargo piping outside (d) Each dry chemical storage unit that cargo area must be protected by: must have independent piping with a (1) At least two dry chemical hand stop valve in the piping for each re- hose lines; or mote hand hose line and remote mon- (2) At least one dry chemical hand itor where the piping connects to the hose line and one dry chemical mon- storage container, if the unit has: itor. (1) More than one hand hose line; (b) At least one dry chemical storage (2) More than one monitor; or unit and hand hose line or monitor (3) A combination of hand hose lines must be at the after end of the cargo and monitors. areas. (e) Each stop valve under paragraph (c) Each cargo loading and discharge (d) of the section must be capable of: manifold must be protected by at least (1) Manual operation; and one dry chemical monitor. (2) Being opened from the hose reel or monitor to which it is connected. § 154.1155 Hand hose line: Coverage. (f) Damage to any dry chemical sys- The coverage for the area for a hand tem hose, monitor, pipe or control cir- hose line under § 154.1150 must not ex- cuits must not prevent the operation of ceed the length of the hand hose line other hoses, monitors, or control cir- except the coverage for the protection cuit that are connected to the same of areas that are inaccessible to per- storage unit. sonnel must not exceed one-half the projection of the hose at its rated dis- § 154.1170 Hand hose line: General. charge, or 10 m (32.8 ft.), whichever is Each dry chemical hand hose line less. must: (a) Not be longer than 33m (108 ft.); § 154.1160 Monitor coverage of system. (b) Be stored on a hose reel or in a The coverage of each dry chemical hose cabinet and be one that is oper- system monitor under § 154.1150 must able whether or not it is unwound from not exceed: a hose reel or removed from a hose cab- (a) 10 m (32.8 ft.) at 10 kg/sec (22 lb/ inet; sec); (c) Be non-kinkable; (b) 30 m (98.4 ft.) at 25 kg/sec (55 lb/ (d) Have a nozzle with a valve to sec); start and stop the flow of chemical; (c) 40 m (131.2 ft.) at 45 kg/sec (99 lb/ (e) Have a capacity of at least 3.5 kg/ sec); sec (7.7 lb./sec); and (d) An interpolation between 10 m (f) Be one that can be operated by (32.8 ft.) at 10 kg/sec (22 lb/sec) and 30 m one person. (98.4 ft.) at 25 kg/sec (55 lb/sec); or (e) An interpolation between 30 m CARGO AREA: MECHANICAL VENTILATION (98.4 ft.) at 25 kg/sec (55 lb/sec) and 40 m SYSTEM (131.2 ft.) at 45 kg/sec (99 lb/sec). § 154.1200 Mechanical ventilation sys- § 154.1165 Controls. tem: General. (a) Each dry chemical hand hose line (a) Each cargo compressor room, must be one that can be actuated at its pump room, gas-dangerous cargo con- hose reel or hose storage cabinet. trol station, and space that contains (b) Each dry chemical monitor must cargo handling equipment must have a be one that can be actuated and con- fixed, exhaust-type mechanical ventila- trolled at the monitor. tion system. (c) A dry chemical monitor for the (b) The following must have a supply- cargo loading and discharging manifold type mechanical ventilation system: areas must be one that can be: (1) Each space that contains electric (1) Actuated from a location other motors for cargo handling equipment. than the monitor and manifold area; (2) Each gas-safe cargo control sta- and tion in the cargo area.

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(3) Each gas-safe space in the cargo (4) The impeller and housing made of area. ferrous material with at least 13mm (4) Each space that contains inert gas (0.512 in.) tip clearance. generators, except main machinery (j) No ventilation fan may have any spaces. combination of fixed or rotating components made of an aluminum or mag- § 154.1205 Mechanical ventilation sys- nesium alloy and ferrous fixed or rotat- tem: Standards. ing components. (a) Each exhaust type mechanical (k) Each ventilation intake and ex- ventilation system required under haust must have a protective metal § 154.1200 (a) must have ducts for vapors screen of not more than 13mm (0.512 from the following: in.) square mesh. (1) The deck level. (2) Bilges. § 154.1210 Hold space, void space, (3) If the vapors are lighter than air, cofferdam, and spaces containing the top of each space that personnel cargo piping. enter during cargo handling oper- (a) Each hold space, void space, ations. cofferdam, and spaces containing cargo (b) The discharge end of each duct piping must have: under paragraph (a) of this section (1) A fixed mechanical ventilation must be at least 10 m (32.8 ft.) from system; or ventilation intakes and openings to ac- (2) A fixed ducting system that has a commodations, service, control sta- portable blower that meets § 154.1205(i) tion, and other gas-safe spaces. and (j). (c) Each ventilation system under (b) A portable blower in any per- § 154.1200 (a) and (b)(1) must change the sonnel access opening must not reduce air in that space and its adjoining the area of that opening so that the trunks at least 30 times each hour. opening does not meet § 154.340. (d) Each ventilation system for a gas- safe cargo control station in the cargo INSTRUMENTATION area must change the air in that space at least eight times each hour. § 154.1300 Liquid level gauging system: (e) A ventilation system must not re- General. cycle vapor from ventilation dis- (a) If Table 4 lists a closed gauge for charges. a cargo, the liquid level gauging sys- (f) Each mechanical ventilation system under § 154.1305 must be closed tem must have its operational controls gauges that do not have any opening outside the ventilated space. through which cargo liquid or vapor (g) No ventilation duct for a gas-dan- could escape, such as an ultrasonic de- gerous space may pass through any vice, float type device, electronic or machinery, accommodation, service, or magnetic probe, or bubble tube indi- control space, except as allowed under cator. § 154.703. (b) If Table 4 lists a restricted gauge (h) Each electric motor that drives a for a cargo, the liquid level gauging ventilation fan must not be within the system under § 154.1305 must be closed ducts for any space that may contain gauges that meet paragraph (a) of this flammable cargo vapors. section or restricted gauges that do not (i) Ventilation impellers and the vent the cargo tank’s vapor space, such housing in way of those impellers on a as a fixed tube, slip tube, or rotary flammable cargo carrier must meet one tube. of the following: (1) The impeller, housing, or both § 154.1305 Liquid level gauging system: made of non-metallic material that Standards. does not generate static electricity. (a) Each cargo tank must have at (2) The impeller and housing made of least one liquid level gauging system non-ferrous material. that is operable: (3) The impeller and housing made of (1) At pressures up to, and including, austenitic stainless steel. the MARVS of the tank; and

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(2) At temperatures that are within 100 percent liquid full and without the cargo handling temperature range causing the pressure in the loading for all cargoes carried. lines to exceed the design pressure; and (b) Unless the cargo tank has one liq- (c) Actuates an audible and visual uid gauging system that can be re- alarm at the cargo control station at paired and maintained when the tank the liquid level at which the valves contains cargo, each cargo tank must under paragraph (b) of this section are have at least two liquid level gauging actuated or at some lower liquid level. systems that meet paragraph (a) of this section. § 154.1330 Liquid level alarm system: (c) Each liquid level gauging system Independent tank type C. must measure liquid levels from 400 Independent tanks type C need not mm (16 in.) or less from the lowest have the high liquid level alarm sys- point in the cargo tank, except collec- tem under § 154.1325 if: tion wells, to 100 percent full. (a) The tank volume is less than 200 m3 (7,060 ft.3); or § 154.1310 Closed gauge shut-off valve. (b) The tank can withstand the max- Each closed gauge that is not mount- imum possible pressure during loading, ed directly on the cargo tank must that pressure is below the relief valve have a shut-off valve that is as close to setting, and overflow of the tank can- the tank as practical. not occur.

§ 154.1315 Restricted gauge excess § 154.1335 Pressure and vacuum pro- flow valve. tection. Each restricted gauge that pene- (a) Each cargo tank must have the trates a cargo tank must have an ex- following: cess flow valve unless the gauge meets (1) A pressure gauge that: § 154.536. (i) Monitors the vapor space; (ii) Is readable at the tank; and § 154.1320 Sighting ports, tubular (iii) Has remote readouts at the cargo gauge glasses, and flat plate type control station. gauge glasses. (2) If vacuum protection is required (a) Cargo tanks may have sighting under § 154.804, a vacuum gauge meet- ports as a secondary means of liquid ing paragraphs (a)(1)(i), (a)(1)(ii), and level gauging in addition to the gauges (a)(1)(iii) of this section. under § 154.1305, if: (b) The vessel must have at least one (1) The tank has a MARVS that is high pressure alarm that: less than 69 kPa gauge (10 psig); (1) Actuates before the pressure in (2) The port has a protective cover any cargo tank exceeds the maximum and an internal scale; and pressure specially approved by the (3) The port is above the liquid level. Commandant (CG–522); and (b) Tubular gauge glasses must not (2) Actuates an audible and visual be liquid level gauges for cargo tanks. alarm at the cargo control station, and (c) Plate type gauge glasses must not a remote group alarm in the wheel- be liquid level gauges for cargo tanks, house. except deck tanks if the gauge connec- (c) If vacuum protection is required tions have excess flow valves. under § 154.804, the vessel must have at least one low pressure alarm that: § 154.1325 Liquid level alarm system: (1) Actuates before the pressure in All cargo tanks. any cargo tank falls below the min- Except as allowed under § 154.1330, imum pressure specially approved by each cargo tank must have a high liq- the Commandant (CG–522); and uid level alarm system that: (2) Actuates an audible and visual (a) Is independent of the liquid level alarm at the cargo control station, and gauging system under § 154.1305; a remote group alarm in the wheel- (b) Actuates quick-closing valves house. under §§ 154.530, 154.532, and 154,538 or a (d) At least one pressure gauge must stop valve in the cargo tank loading be fitted on each: line to prevent the tank from becoming (1) Enclosed hold;

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(2) Enclosed interbarrier space; § 154.1345 Gas detection. (3) Cargo pump discharge line; (a) Each vessel carrying a cargo that (4) Liquid cargo manifold; and is designated with an ‘‘I’’ or ‘‘I and T’’ (5) Vapor cargo manifold. in Table 4 must have: (e) There must be a local manifold (1) A fixed flammable gas detection pressure gauge between each manifold system that meets § 154.1350; and stop valve and each hose connection to (2) Two portable gas detectors that the shore. can each measure 0 to 100% of the lower flammable limit of the cargo car- [CGD 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, ried. 1983] (b) Each vessel carrying a cargo that is designated with a ‘‘T’’ or ‘‘I and T’’ § 154.1340 Temperature measuring de- in Table 4 must have: vices. (1) Two portable gas detectors that show if the concentration of cargo is (a) Each cargo tank must have de- above or below the threshold limit vices that measure the temperature: value listed in 29 CFR 1910.1000 for that (1) At the bottom of the tank; and cargo; and (2) Near the top of the tank and (2) Fixed gas sampling tubes in each below the maximum liquid level al- hold space and interbarrier space with: lowed under § 154.1844. (i) The number of tubes specially ap- (b) Each device required by para- proved by the Commandant (CG–522); graph (a) must have a readout at the (ii) Each tube valved and capped cargo control station. above the main deck unless it is con- (c) Except for independent tanks type nected to a fixed toxic gas detector; C, each cargo containment system for a (iii) If the vessel carries cargo that is design temperature colder than ¥55 °C heavier than the atmosphere of the (¥67 °F) must have temperature meas- space, each tube’s open end in the uring devices that meet the following: lower part of the space; (1) The number and location of the (iv) If the vessel carries cargo that is devices must be specially approved by lighter than the atmosphere of the the Commandant (CG–522). space, each tube’s open end in the (2) The devices must be within the upper part of the space; cargo tank’s insulation or on the adja- (v) If the vessel carries cargo that is cent hull structure. heavier than the atmosphere of the (3) Each device must show the tem- space and another cargo that is lighter than the atmosphere of the space, perature continuously or at regular in- tubes with their open ends in the lower tervals of one hour or less. part of the space and tubes with their (4) Each device must actuate an audi- open ends in the upper part of the ble and visual alarm at the cargo con- space; and trol station and a remote group alarm (vi) If the vessel carries cargo that in the wheelhouse before the tempera- can be both heavier and lighter than ture of the steel of the adjacent hull the atmosphere of the space, tubes structure is cooled below the lowest with their open ends in the lower part temperature allowed for the steel of the space and tubes with their open under § 154.172. ends in the upper part of the space. (d) For each cargo tank with a design (c) A vessel that carries methyl bro- temperature colder than ¥55 °C (¥67 mide or sulfur dioxide must have a °F), the number and arrangement of fixed gas detection system that is not the devices that show the temperature located in a gas-safe space. of the tank during cool down proce- (d) A vessel that carries sulfur diox- dures must be specially approved by ide must have a fixed gas detection sys- the Commandant (CG–522). tem that meets § 154.1350 except paragraph (j). [CGD 74–289, 44 FR 26009, May 3, 1979, as (e) Each alarm under § 154.1350(e) on a amended by CGD 82–063b, 48 FR 4782, Feb. 3, vessel that carries methyl bromide or 1983] sulfur dioxide must be set at or below

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the threshold limit value listed in 29 detection system’s readout is not lo- CFR 1910.1000 for the cargo carried. cated in those spaces. [CGD 74–289, 44 FR 26009, May 3, 1979, as (i) Each flammable gas detection sys- amended by CGD 82–063b, 48 FR 4782, Feb. 3, tem must monitor each sampling point 1983] at 30 minute or shorter intervals. (j) Electrical equipment for each § 154.1350 Flammable gas detection flammable gas detection system that is system. in a gas-dangerous space or area must (a) The vessel must have a fixed meet §§ 154.1000 through 154.1015. flammable gas detection system that (k) Each flammable gas detection has sampling points in: system must have enough flame arres- (1) Each cargo pump room; tors for all gas sampling lines to pre- (2) Each cargo compressor room; vent flame propagation to the spaces (3) Each motor room for cargo han- served by the system through the sam- dling machinery; pling lines. (4) Each cargo control station that is (l) Each flammable gas detection sys- not gas-safe; tem must have a filter that removes (5) Each hold space, interbarrier particulate matter in each gas sam- space, and other enclosed spaces, ex- pling line. cept fuel oil or ballast tanks, in the (m) Each filter under paragraph (l) of cargo area, unless the vessel has inde- this section must be located where it pendent tanks type C; and can be removed during vessel oper- (6) Each space between the doors of ation, unless it can be freed by back an air lock under § 154.345. pressure. (b) The sampling points under para- (n) Each flammable gas detection graph (a) of this section must meet system in a gas-safe space must: § 154.1345(b)(2) (iii) through (vi). (1) Have a shut-off valve in each sam- (c) Gas sampling lines for the flam- pling line from an enclosed space, such mable gas detection system must not as a hold or interbarrier space; and pass through any gas-safe space, except (2) Exhaust gas to a safe location in the gas-safe space in which the gas de- the open atmosphere and away from all tection equipment is located. ignition sources. (d) Gas detection systems must have (o) Each flammable gas detection a readout with meters that show flam- system must not have common sam- mable gas concentration over the con- pling lines, except sampling lines may centration or volume ranges under be manifolded at the gas detector loca- paragraph (t) or (u) of this section. tion if each line has an automatic (e) Each flammable gas detection valve that prevents cross-communica- system must have audible and visual alarms that are actuated at a cargo tion between sampling points. concentration that is 30% or less of the (p) Each flammable gas detection lower flammable limit in air of the system must have at least one connec- cargo carried. tion for injecting zero gas and span gas (f) Each flammable gas detection sys- into the system for testing and calibra- tem must have an audible and visual tion. alarm for power failure and loss of gas (q) Each flammable gas detection sampling flow. system must have span gas for testing (g) The alarms under paragraphs (e) and calibration that is of known con- and (f) of this section must signal in centration. the space where the gas detection sys- (r) The calibration test procedure and tem’s readout is located and must meet type and concentration of span gas § 154.1365. under paragraph (q) of this section (h) Remote group alarms, that indi- must be on or in each gas analyzer cab- cate that one of the alarm conditions inet. under paragraphs (e) and (f) of this sec- (s) Each flammable gas detection sys- tion exists, must meet § 154.1365 and tem must have at least one flow meter must be in each wheelhouse and in capable of measuring the flow to the each cargo control station if the gas gas analyzer, and must provide a

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means for ensuring that there is a posi- cargo tank must be marked with the tive flow in the right direction in each design temperature specified for the sampling line at all times. cargo tank on the vessel’s certificate. (t) Each flammable gas detection system must measure gas concentrations SAFETY EQUIPMENT that: (1) Are at least 0% through 200% of § 154.1400 Safety equipment: All vessels. the alarm concentration; and (2) Allow calibration of the equip- (a) Instead of the equipment under ment with span gas. § 35.30–20 of this chapter, a vessel of less (u) In each hold and each interbarrier than 25,000 m3 cargo capacity must space that contains tanks other than have the following personnel safety independent tanks type A, B, or C, the equipment: flammable gas detection system must (1) Six self-contained, pressure-de- measure cargo concentrations of 0 to mand-type, air-breathing apparatus ap- 100% by volume with: proved by the Mining Enforcement and (1) An analyzer other than the one Safety Administration (MESA) or the under paragraph (t) of this section; or National Institute for Occupational (2) The analyzer under paragraph (t) Safety and Health (NIOSH), each hav- of this section with a scale switch that ing at least a 30 minute capacity. automatically returns the analyzer to (2) Nine spare bottles of air for the the concentration range under para- self-contained air-breathing apparatus, graph (t) of this section when released. each having at least a 30 minute capacity. § 154.1360 Oxygen analyzer. (3) Six steel-cored lifelines. (4) Six Type II or Type III flashlights The vessel must have a portable ana- constructed and marked in accordance lyzer that measures oxygen levels in an with ASTM F 1014 (incorporated by ref- inert atmosphere. erence, see § 154.1). § 154.1365 Audible and visual alarms. (5) Three fire axes. (6) Six helmets that meet ANSI Safe- (a) Each audible alarm must have an ty Requirements for Industrial Head arrangement that allows it to be Protection, Z–89.1 (1969). turned off after sounding. For remote (7) Six sets of boots and gloves that group alarms this arrangement must are made of rubber or other elec- not interrupt the alarm’s actuation by trically non-conductive material. other faults. (8) Six sets of goggles that meet the (b) Each visual alarm must be one specifications of ANSI Practice for Oc- that can be turned off only after the cupational and Educational Eye and fault that actuated it is corrected. Face Protection, Z–87.1 (1979). (c) Each visual alarm must be (9) Three outfits that protect the marked to show the type and, except skin from scalding steam and the heat for remote group alarms, the location of a fire, and that have a water resist- of each fault that actuates it. ant outer surface. (d) Each vessel must have means for (10) Three chemical protective outfits testing each alarm. that protect the wearers from the particular personnel hazards presented by § 154.1370 Pressure gauge and vacuum the cargo vapor. gauge marking. (b) Instead of the equipment under Each pressure gauge and vacuum § 35.30–20 of this chapter, a vessel of gauge under § 154.1335(a) must be 25,000 m3 cargo capacity or more must marked with the maximum and min- have the following personnel safety imum pressures that are specified on equipment: the vessel’s certificate for the cargo (1) Eight self-contained, pressure-de- carried. mand-type, air-breathing apparatus approved by the Mining Enforcement and § 154.1375 Readout for temperature Safety Administration (MESA) or the measuring device: Marking. National Institute for Occupational Each readout under § 154.1340 for a de- Safety and Health (NIOSH), each hav- vice that measures temperature in a ing at least a 30 minute capacity.

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(2) Nine spare bottles of air for the (8) Three chemical protective outfits self-contained air-breathing apparatus, that protect the wearers from the par- each having at least a 30 minute capac- ticular personnel hazards presented by ity. the cargo vapor. (3) Eight steel-cored lifelines. [CGD 74–289, 44 FR 26009, May 3, 1979, as (4) Eight Type II or Type III flash- amended by CGD 77–069, 52 FR 31630, Aug. 21, lights constructed and marked in ac- 1987; CGD 82–042, 17705, May 18, 1988; USCG– cordance with ASTM F 1014 (incor- 1999–5151, 64 FR 67183, Dec. 1, 1999] porated by reference, see § 154.1). (5) Three fire axes. § 154.1405 Respiratory protection. (6) Eight helmets that meet ANSI When Table 4 references this section, Safety Requirements for Industrial a vessel carrying the listed cargo must Head Protection, Z–89.1 (1969). have: (7) Eight sets of boots and gloves that (a) Respiratory protection equipment are made of rubber or other elec- for each person on board that protects trically non-conductive material. the person from the cargo vapor for at (8) Eight sets of goggles that meet least 5 minutes; and the specifications of ANSI Practice for (b) Two additional sets of respiratory Occupational and Educational Eye and protection equipment that: Face Protection, Z–87.1 (1979). (1) Are stowed in the wheelhouse; and (9) Five outfits that protect the skin (2) Protects the wearer from the from scalding steam and the heat of a cargo vapor for at least 5 minutes. fire, and that have a water resistant outer surface. § 154.1410 Decontamination shower. (10) Three chemical protective outfits that protect the wearers from the par- When Table 4 references this section, ticular personnel hazards presented by a vessel carrying the listed cargo must the cargo vapor. have a decontamination shower and an (c) When Table 4 references this sec- eye wash that: tion, a vessel carrying the listed cargo (a) Are on the weatherdeck; and must have the following additional per- (b) Have their location marked sonnel protection equipment: EMERGENCY SHOWER in letters: (1) Three self-contained, pressure-de- (1) 7.6 cm (3 in.) high; and mand-type, air-breathing apparatus ap- (2) 5.1 cm (2 in.) wide. proved by the Mining Enforcement and Safety Administration (MESA) or the § 154.1415 Air compressor. National Institute for Occupational Each vessel must have an air com- Safety and Health (NIOSH), each hav- pressor to recharge the bottles for the ing at least a 30 minute capacity. air-breathing apparatus. (2) Nine spare bottles of air for the self-contained air-breathing apparatus, § 154.1420 Stretchers and equipment. each having at least a 30 minute capacity. Each vessel must have: (3) Three steel-cored lifelines. (a) Two stretchers or wire baskets; and (4) Three Type II or Type III flashlights constructed and marked in ac- (b) Equipment for lifting an injured cordance with ASTM F 1014 (incor- person from a cargo tank, hold, or void porated by reference, see § 154.1). space. (5) Three helmets that meet ANSI § 154.1430 Equipment locker. Safety Requirements for Industrial Head Protection, Z–89.1 (1969). One of each item of equipment under (6) Three sets of boots and gloves §§ 154.1400 and 154.1420 must be stowed that are made of rubber or other elec- in a marked locker: trically non-conductive material. (a) On the open deck in or adjacent to (7) Three sets of goggles that meet the cargo area; or the specifications of ANSI Practice for (b) In the accommodation house, near Occupational and Educational Eye and to a door that opens onto the main Face Protection, Z–87.1 (1979). deck.

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§ 154.1435 Medical first aid guide. (i) Is not reactive; Each vessel must have a copy of the (ii) Is not flammable; and IMO Medical First Aid Guide for Use in (iii) Does not contain more than 0.2% Accidents Involving Dangerous Goods, oxygen by volume; or printed by IMO, London, U.K. (2) Controlling the cargo temperature. § 154.1440 Antidotes. § 154.1715 Moisture control. Each vessel must have the antidotes prescribed in the IMO Medical First Aid When a vessel is carrying sulfur diox- Guide for Use in Accidents Involving ide, the master shall ensure that: Dangerous Goods, printed by IMO, Lon- (a) A cargo tank is dry before it is don, U.K. for the cargoes being carried. loaded with sulfur dioxide; and (b) Air or inert gas admitted into a Subpart D—Special Design and cargo tank carrying sulfur dioxide dur- Operating Requirements ing discharging or tank breathing has a moisture content equal to or less than § 154.1700 Purpose. the moisture content of air with a dewpoint of ¥45 °C (¥49 °F) at atmospheric This subpart prescribes design and pressure. operating requirements that are unique for certain cargoes regulated by this § 154.1720 Indirect refrigeration. part. A refrigeration system that is used § 154.1702 Materials of construction. to cool acetaldehyde, ethylene oxide, or methyl bromide, must be an indirect When Table 4 references one of the refrigeration system that does not use following paragraphs in this section, vapor compression. the materials in the referenced paragraph must not be in components that § 154.1725 Ethylene oxide. contact the cargo liquid or vapor: (a) Aluminum and aluminum bearing (a) A vessel carrying ethylene oxide alloys. must: (b) Copper and copper bearing alloys. (1) Have cargo piping, vent piping, (c) Zinc or galvanized steel. and refrigeration equipment that have (d) Magnesium. no connections to other systems; (e) Mercury. (2) Have valves, flanges, fittings, and (f) Acetylide forming materials, such accessory equipment made of steel, as copper, silver, and mercury. stainless steel, except types 416 and 442, or other material specially approved by § 154.1705 Independent tank type C. the Commandant (CG–522); The following cargoes must be car- (3) Have valve disk faces, and other ried in an independent tank type C wearing parts of valves made of stain- that meets § 154.701(a): less steel containing not less than 11% (a) Ethylene oxide. chromium; (b) Methyl bromide. (4) Have gaskets constructed of spi- (c) Sulfur dioxide. rally wound stainless steel with teflon or other material specially approved by § 154.1710 Exclusion of air from cargo the Commandant (CG–522); tank vapor spaces. (5) Not have asbestos, rubber, or cast When a vessel is carrying acetal- iron components in the cargo contain- dehyde, butadiene, ethylene oxide, or ment system and piping; vinyl chloride, the master shall ensure (6) Not have threaded joints in cargo that air is: piping; (a) Purged from the cargo tanks and (7) Have a water spray system under associated piping before the cargo is § 154.1105 that protects the above deck loaded; and cargo piping; and (b) Excluded after the cargo is loaded (8) Have a nitrogen inerting system by maintaining a positive pressure of or on board nitrogen gas storage that at least 13.8 kPa gauge (2 psig) by: can inert the vapor space of an ethyl- (1) Introducing a gas that: ene oxide cargo tank for a period of 30

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days under the condition of paragraph one-third (on a molar basis) must be (e) of this section. butanes and one-third propane; and (b) Cargo hose used for ethylene (iv) Maximum combined concentra- oxide must: tion of propylene and butadiene of 10 (1) Be specially approved by the Com- mole percent. mandant (CG–522); and (2) A second composition is: (2) Be marked ‘‘For (Alkylene or (i) Maximum methyl acetylene and Ethylene) Oxide Transfer Only.’’ propadiene combined concentration of (c) Ethylene oxide must be main- 30 mole percent; tained at less than 30 °C (86 °F). (ii) Maximum methyl acetylene con- (d) Cargo tank relief valves for tanks centration of 20 mole percent; containing ethylene oxide must be set (iii) Maximum propadiene concentra- at 539 kPa gauge (78.2 psig) or higher. tion of 20 mole percent; (e) The vapor space of a cargo tank (iv) Maximum propylene concentra- carrying ethylene oxide must be main- tion of 45 mole percent; tained at a nitrogen concentration of (v) Maximum butadiene and 45% by volume. butylenes combined concentration of 2 (f) A vessel must have a method for mole percent; jettisoning ethylene oxide that meets (vi) A minimum saturated C 4 hydro- §§ 154.356 and 154.1872. carbon concentration of 4 mole percent; and [CGD 74–289, 44 FR 26009, May 3, 1979, as (vii) A minimum propane concentra- amended by CGD 82–063b, 48 FR 4782, Feb. 3, tion of 25 mole percent. 1983] (b) A vessel carrying a methyl acety- § 154.1730 Ethylene oxide: Loading and lene-propadiene mixture must have a off loading. refrigeration system without vapor compression or have a refrigeration (a) The master shall ensure that be- system with the following features: fore ethylene oxide is loaded into a (1) A vapor compressor that does not cargo tank: raise the temperature and pressure of (1) The tank is thoroughly clean, dry, the vapor above 60 °C (140 °F) and 1.72 and free of rust; MPa gauge (250 psig) during its oper- (2) The hold spaces are inerted with ation and that does not allow vapor to an inert gas that meets § 154.1710(b)(1); stagnate in the compressor while it and continues to run. (3) The cargo tank vapor space is (2) Discharge piping from each com- inerted with nitrogen. pressor stage or each cylinder in the (b) Ethylene oxide must be off loaded same stage of a reciprocating com- by a deepwell pump or inert gas dis- pressor that has: placement. (i) Two temperature actuated shut- (c) Ethylene oxide must not be car- down switches set to operate at 60 °C ried in deck tanks. (140 °F) or less; (ii) A pressure actuated shutdown § 154.1735 Methyl acetylene-propa- switch set to operate at 1.72 MPa gauge diene mixture. (250 psig) or less; and (a) The composition of the methyl (iii) A safety relief valve set to re- acetylene-propadiene mixture at load- lieve at 1.77 MPa gauge (256 psig) or ing must be within the following limits less. or specially approved by the Com- (3) A relief valve that vents to a mast mandant (CG–522): meeting § 154.805 and that does not re- (1) One composition is: lieve into the compressor suction line. (i) Maximum methyl acetylene and (4) An alarm that sounds in the cargo propadiene molar ratio of 3 to 1; control station and in the wheelhouse (ii) Maximum combined concentra- when any of the high pressure or high tion of methyl acetylene and propa- temperature switches under paragraphs diene of 65 mole percent; (b)(2)(i) and (b)(2)(ii) of this section op- (iii) Minimum combined concentra- erate. tion of propane, butane, and isobutane (c) A vessel carrying a methyl acety- of 24 mole percent, of which at least lene-propadiene mixture must have

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separate cargo piping, vent piping, and Subpart E—Operations refrigeration equipment for methyl acetylene-propadiene that are seg- § 154.1800 Special operating require- regated from other cargo piping, vent ments under Part 35 of this chap- piping and refrigeration equipment on ter. the vessel. Each vessel must meet the require- [CGD 74–289, 44 FR 26009, May 3, 1979; 44 FR ments of Part 35 of this chapter except 59234, Oct. 15, 1979; CGD 82–063b, 48 FR 4782, § 35.30–20. Feb. 3, 1983] § 154.1801 Certificates, letters, and en- § 154.1740 Vinyl chloride: Inhibiting dorsements: U.S. flag vessels. and inerting. No person may operate a U.S. flag When a vessel is carrying vinyl chlo- vessel unless the vessel has a Certifi- ride, the master shall ensure that: cate of Inspection, issued under Sub- (a) Section 154.1818 is met; or chapter D of this chapter, which is en- (b) Section 154.1710 is met, and the dorsed with the name of the cargo that oxygen content of inert gas is less than it is allowed to carry. 0.1% by volume. § 154.1802 Certificates, letters and en- § 154.1745 Vinyl chloride: Transferring dorsements: Foreign flag vessels. operations. (a) No person may operate on the A vessel carrying vinyl chloride must navigable waters of the United States a meet the requirements of § 151.50–34(g) foreign flag vessel, whose flag adminis- through (k) of this chapter. tration issues IMO Certificates, unless the vessel has: [CGD 95–012, 60 FR 48051, Sept. 18, 1995] (1) An IMO Certificate issued by the flag administration that is endorsed § 154.1750 Butadiene or vinyl chloride: with the name of the cargo that it is Refrigeration system. allowed to carry, and, except when en- A refrigeration system for butadiene tering United States waters to be ex- or vinyl chloride must not use vapor amined as required by § 154.150, a Cer- compression unless it: tificate of Compliance 1 issued by the (a) Avoids any stagnation points Coast Guard endorsed under this part where uninhibited liquid can accumu- with the name of the cargo that it is late; or allowed to carry; or (b) Has inhibited liquid from the (2) Special approval under § 154.30. cargo tank added to the vapor up- (b) No person may operate on the stream of the condenser. navigable waters of the United States a foreign flag vessel, whose flag adminis- § 154.1755 Nitrogen. tration does not issue IMO Certificates, Except for deck tanks and their pip- unless the vessel has: ing systems, cargo containment sys- (1) Except when entering United tems and piping systems carrying ni- States waters to be examined as re- trogen must be specially approved by quired by § 154.150, a Certificate of Com- the Commandant (CG–522). pliance 1 issued by the Coast Guard endorsed under this part with the name [CGD 74–289, 44 FR 26009, May 3, 1979, as of the cargo it is allowed to carry; or amended by CGD 82–063b, 48 FR 4782, Feb. 3, (2) Special approval under § 154.30. 1983] (c) No person may operate on the § 154.1760 Liquid ammonia. navigable waters of the United States a foreign flag vessel unless the vessel has The master shall ensure that no person sprays liquid ammonia into a cargo 1 tank containing more than 8% oxygen Until the Certificate of Compliance form is developed, the Letter of Compliance with by volume. a Subchapter O endorsement for the carriage of liquefied gases will serve the purpose of the endorsed Certificate of Compliance.

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onboard the following plans and infor- § 154.1806 Regulations on board. mation which except for the certifi- No person may operate a U.S. flag cates under paragraph (c)(1) of this sec- vessel unless a copy of this part and a tion, are in English: copy of Part 35 of this chapter are on (1) The vessel’s Cargo Ship Safety board. Construction Certificate and Cargo Ship Safety Equipment Certificate § 154.1808 Limitations in the endorse- issued under the International Conven- ment. tion for Safety of Life at Sea, 1974. No person may operate a vessel un- (2) A description and schematic plan less that person complies with all limi- of the arrangement for inerting cargo tations in the endorsement on the ves- tanks, hold spaces, and interbarrier sel’s Certificate of Inspection or Cer- spaces. tificate of Compliance. (3) A description of the cargo tank gauging equipment. [CGD 81–052, 50 FR 8735, Mar. 5, 1985] (4) A description and instruction manual for the calibration of the cargo § 154.1809 Loading and stability man- leak detector equipment. ual. (5) A schematic plan that shows the (a) No person may operate a vessel locations of leak detectors and sam- unless that vessel has on board a load- pling points. ing and stability manual. (6) If the vessel carries methane, a (b) The loading and stability manual description of the systems for cargo must contain: temperature and pressure control. (See (1) Information that enables the mas- §§ 154.703 through 154.709). ter to load and ballast the vessel while keeping structural stresses within de- [CGD 74–289, 44 FR 26009, May 3, 1979, as sign limits; and amended by CGD 81–052, 50 FR 8735, Mar. 5, 1985; CGD 77–069, 52 FR 31631, Aug. 21, 1987; (2) The information required by CGD 90–008, 55 FR 30663, July 26, 1990] § 170.110 of this chapter. [CGD 74–289, 44 FR 26009, May 3, 1979, as § 154.1803 Expiration of Certificates of amended by CGD 79–023, 49 FR 51010, Nov. 4, Compliance. 1983] (a) A Certificate of Compliance expires after a period not to exceed twen- § 154.1810 Cargo manual. ty-four months from the date of the ex- (a) No person may operate a foreign amination under § 154.150. flag vessel, whose flag administration (b) If a vessel’s IMO Certificate of does not issue IMO Certificates, on the Fitness expires or otherwise becomes navigable waters of the United States, invalid, its Certificate of Compliance or a U.S. flag vessel, unless the vessel becomes invalid for the carriage of car- has on board a cargo manual con- goes listed in Table 4 of this part or au- taining the following information: thorized by special approval under (1) A description of each cargo car- § 154.12. To maintain the validity of the ried, its handling hazards as a liquid or Certificate of Compliance, the vessel’s as a gas including frostbite or asphyx- owner must submit a copy of any re- iation, its safety equipment and nec- vised or reissued IMO Certificate to essary first aid measures required by Commanding Officer, Marine Safety this part. Center. (2) A description of the dangers of as- [CGD 81–052, 50 FR 8735, Mar. 5, 1985; CGD 95– phyxiation from the inerting gases 072, 60 FR 50466, Sept. 29, 1995; 60 FR 54106, used on the vessel. Oct. 19, 1995] (3) The measures that mitigate em- brittlement of steel structure in way of § 154.1804 Document posted in wheel- cargo leakage. house. (4) The use of the firefighting sys- No person may operate a U.S. flag tems on the vessel. vessel unless the documents under (5) The features of the cargo contain- § 154.1801 are under glass in a con- ment system that affect its operation spicuous place in the wheelhouse. and maintenance, including pressure

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and temperature ranges and relief (xi) Vaporizer malfunction or failure. valve settings. (xii) Piping or cargo valve freeze-up. (6) Pressures, temperatures, and liq- (16) Any other matters relating to op- uid levels for all operations. eration of the cargo systems. (7) General information derived from (17) The operational means to main- the first loading of the vessel. tain the vessel in a condition of posi- (8) Alarm settings. tive stability in accordance with the (9) Descriptions of the components of loading and stability manual under the cargo system, including the fol- § 154.1809 through all conditions of: lowing: (i) Loading and deballasting; and (i) Liquid cargo system. (ii) Unloading and ballasting. (ii) Liquid recirculating or conden- (b) The master shall ensure that the sate return system. cargo manual is kept up-to-date. (iii) Cargo tank cool-down system. (iv) Cargo tank warm-up or vaporiza- § 154.1812 Operational information for tion system. terminal personnel. (v) Gas main system. The master shall ensure that ter- (vi) Cargo tank or compressor relief minal personnel are told the oper- system and blocked liquid or gas relief ational information required by system. § 154.1810(a)(17). (vii) Inerting system. (viii) Boil-off gas compressor or re- § 154.1814 Cargo information cards. liquefaction system. (a) No person may operate a vessel (ix) Gas detection systems. unless a cargo information card for (x) Alarm or safety indication sys- each cargo being transported is carried tems. either in the wheelhouse, in the ship’s (xi) Cargo jettisoning system. office, or in another location easily ac- (xii) The system for using boil-off gas cessible to the person in charge of the as fuel. watch. (10) A description of cargo loading (b) When a vessel is moored at a ter- and discharge operations, including si- minal, the master shall ensure that a multaneous handling of multigrades of set of information cards is in the pos- cargo and ballast. session of the terminal’s person in (11) A description of cargo operations charge of cargo transfer operations. during the voyage. (c) Each card must be at least 17 cm (12) A description of cargo tank cool- × 24 cm (63⁄4 in. × 91⁄2 in.), have printing down and warm-up operations includ- on one side only, and must contain the ing purging with inert gas and air. following information about the cargo: (13) A description of hull and cargo tank temperature monitoring systems. (1) Name as listed in Table 4. (14) A description of gas detection (2) Appearance. systems and alarm or safety systems. (3) Odor. (15) A description of the following (4) Safe handling procedures, includ- conditions and their symptoms, including special handling instructions, and ing emergency measures and corrective handling hazards. actions: (5) Procedures to follow in the event (i) Cargo or ballast valve malfunc- of spills, leaks, or uncontrolled cargo tion. release. (ii) Low cargo tank gas pressure. (6) Procedures to be followed if a per- (iii) High fill level shutdown. son is exposed to the cargo. (iv) Gas compressor shutdown. (7) Firefighting procedures and mate- (v) Hull cold spots. rials. (vi) Cargo piping leaks. (vii) Primary or secondary barrier § 154.1816 Cargo location plan. failure. The master shall ensure that: (viii) Hold boundary structural fail- (a) A cargo location plan is prepared ure. that gives: (ix) Fire in vent mast head. (1) The location and number of each (x) Reliquefaction plant failure. cargo tank; and

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(2) The name of the cargo in each § 154.1826 Opening of cargo tanks and tank; cargo sampling. (b) One cargo location plan is kept (a) The master shall ensure that each with the sets of cargo information cargo tank opening is fully closed at cards required under § 154.1814; and all times. (c) The cargo names in the cargo lo- (b) The master may authorize the cation plan do not differ from the opening of a cargo tank: names of the cargoes listed in Table 4. (1) During tank cleaning; and (2) To sample a cargo that Table 4 al- § 154.1818 Certification of inhibition. lows to be carried in a containment (a) Except as provided in § 154.1740(b), system having a restricted gauging no person may operate a vessel car- system if: rying butadiene or vinyl chloride with- (i) The cargo tank is not being filled out carrying in the wheelhouse written during sampling; certification from the shipper that the (ii) The vent system has relieved any product is inhibited. pressure in the tank; and (b) The certification required by this (iii) The person sampling the cargo section must contain the following in- wears protective clothing. formation: (c) The master shall ensure that car- (1) The name and concentration of goes requiring closed gauging as listed the inhibitor. in Table 4 are sampled only through (2) The date the inhibitor was added. the controlled sampling arrangement (3) The expected duration of the in- of the cargo tank. hibitor’s effectiveness. (4) Any temperature limitations § 154.1828 Spaces containing cargo qualifying the inhibitor’s effective life- vapor: Entry. time. (a) No person may enter a cargo han- (5) The action to be taken if the time dling space without the permission of of the voyage exceeds the inhibitor’s the master or without following a safe- lifetime. ty procedure established by the master. (b) Before allowing anyone to enter a § 154.1820 Shipping document. cargo handling space, the master shall No person may operate a vessel with- ensure that: out carrying a shipping document in (1) The space is free of toxic vapors the wheelhouse that lists for each and has an oxygen concentration of at cargo on board: least 19.5 percent oxygen by volume; or (a) The cargo tank in which the cargo (2) Those entering the space wear is stowed; protective equipment with breathing (b) The name of the shipper; apparatus and an officer closely super- (c) The location of the loading ter- vises the entire operation in the space. minal; (d) The cargo name as listed in Table § 154.1830 Warning sign. 4; and (a) The master shall ensure that a (e) The approximate quantity of the vessel transferring cargo, while fast to cargo. a dock or while at anchor in port, displays a warning sign: § 154.1822 Shipping document: Copy (1) At the gangway facing the shore for transfer terminal. so that the sign may be seen from the While a vessel is moored at a transfer shore; and terminal, the master shall ensure that (2) Facing outboard towards the at least one copy of the shipping docu- water so that the sign may be seen ment is given to the terminal’s person from the water. in charge of cargo transfer. (b) Except as provided in paragraph (e) of this section, each warning sign § 154.1824 Obstruction of pumproom must have the following words: ladderways. (1) Warning. The master shall ensure that each (2) Dangerous Cargo. cargo pumproom access is unob- (3) No Visitors. structed. (4) No Smoking.

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(5) No Open Lights. cial training in the particular hazards (c) Each letter in the words on the associated with the cargo and in all sign must: special procedures for its handling; and (1) Be block style; (5) On each foreign vessel, the person (2) Be black on a white background; in charge understands his or her re- (3) Be 7.6 cm (3 in.) high; sponsibilities as described in this sub- (4) Be 5.1 cm (2 in.) wide, except for chapter. ‘‘M’’ and ‘‘W’’ which must be 7.6 cm (3 (b) Upon request by the Officer in in.) wide, and the letter ‘‘I’’ which may Charge, Marine Inspection, in whose be 1.3 cm (1⁄2 in.) wide; and zone the transfer will take place, the (5) Have 1.3 cm (1⁄2 in.) stroke width. owner and operator of the vessel, and (d) The spacing between letters must his or her agent, and each of them, be: shall provide documentary evidence (1) 1.3 cm (1⁄2 in.) between letters of that the person in charge has received the same word on the sign; the training specified by paragraph (2) 5.1 cm (2 in.) between words; (a)(4) of this section and is capable of (3) 5.1 cm (2 in.) between lines; and competently performing the procedures (4) 5.1 cm (2 in.) at the borders of the necessary for the cargo. sign. (e) The words ‘‘No Smoking’’ and ‘‘No [CGD 79–116, 60 FR 17158, Apr. 4, 1995] Open Lights’’ may be omitted when the cargoes on board a vessel are not flam- § 154.1834 Cargo transfer piping. mable. The person in charge of cargo trans- (f) When a vessel carries or transfers fer shall ensure that cargo is trans- vinyl chloride, the warning sign under ferred to or from a cargo tank only paragraph (b) of this section must also through the cargo piping system. have the words ‘‘Cancer Suspect Agent.’’ § 154.1836 Vapor venting as a means of cargo tank pressure and tempera- § 154.1831 Persons in charge of trans- ture control. ferring liquid cargo in bulk or preparing cargo tanks. When the vessel is on the navigable waters of the United States, the master (a) The owner and operator of the shall ensure that the cargo pressure vessel, and his or her agent, and each and temperature control system under of them, shall ensure that— §§ 154.701 through 154.709 is operating (1) Enough ‘‘Tankerman-PICs’’ or re- and that venting of cargo is unneces- stricted ‘‘Tankerman-PICs’’, and sary to maintain cargo temperature ‘‘Tankerman-Assistants’’, authorized and pressure control, except under for the classification of cargo carried, emergency conditions. are on duty to safely conduct a transfer of liquid cargo in bulk or a cool- § 154.1838 Discharge by gas pressur- down, warm-up, gas-free, or air-out of ization. each cargo tank; (2) Each transfer of liquid cargo in The person in charge of cargo trans- bulk, and each cool-down, warm-up, fer may not authorize cargo discharge gas-free, or air-out of a cargo tank, is by gas pressurization unless: supervised by a person designated as a (a) The tank to be offloaded is an person in charge of the transfer that independent tank type B or C; possesses the qualifications required by (b) The pressurizing medium is the 33 CFR 155.710; cargo vapor or a nonflammable, (3) On each foreign tankship, the per- nontoxic gas that is inert with the son in charge of either a transfer of liq- cargo; and uid cargo in bulk or a cool-down, (c) The pressurizing line has: warm-up, gas-free, or air-out of a cargo (1) A pressure reducing valve that has tank possesses the qualifications re- a setting that is 90 percent or less of quired by 33 CFR 155.710; the tank’s relief valve setting; and (4) When cargo regulated under this (2) A manual control valve between part is being transferred, the person in the pressure reducing valve and the charge of the transfer has received spe- tank.

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§ 154.1840 Protective clothing. § 154.1848 Inerting. The person in charge of cargo trans- (a) The master shall ensure that: fer shall ensure that each person in- (1) Hold and interbarrier spaces on a volved in a cargo transfer operation, vessel with full secondary barriers are except those assigned to gas-safe cargo inerted so that the oxygen concentra- control rooms, wears protective cloth- tion is 8 percent or less by volume ing. when flammable cargoes are carried; (2) Hold and interbarrier spaces con- § 154.1842 Cargo system: Controls and tain only dry air or inert gas on: alarms. (i) A vessel with partial secondary The master shall ensure that the barriers; cargo emergency shut-down system (ii) A vessel with full secondary bar- and the alarms under § 154.1325 are test- riers when non-flammable cargoes are ed and working before cargo is trans- carried; and ferred. (iii) A vessel with refrigerated independent tanks type C; § 154.1844 Cargo tanks: Filling limits. (3) When cargo tanks containing flammable vapor are to be gas freed, (a) Unless a higher limit is specified the flammable vapors are purged from on the certificate the master shall en- the tank by inert gas before air is ad- sure that a cargo tank is not loaded: mitted; and (1) More than 98 percent liquid full; (4) When gas free cargo tanks are to or be filled with a flammable cargo, air is (2) In excess of the volume deter- purged from the tank by inert gas until mined under the following formula: the oxygen concentration in the tank is 8 percent or less by volume before ⎛ ⎞ cargo liquid or vapor is introduced. d r VV= (.098 ) (b) Inert gas must be supplied from L ⎜ ⎟ ⎝ d L ⎠ the shore or from the vessel’s inert gas where: system.

VL=maximum volume to which the tank may § 154.1850 Entering cargo handling be loaded; spaces. V=volume of the tank; (a) The master shall ensure that the dr=density at the reference temperature specified in paragraph (b) of this section; ventilation system under § 154.1200 is in and operation for 30 minutes before a per-

dL=density of the cargo at the loading tem- son enters one of the following: perature and pressure. (1) Spaces containing cargo pumps, compressors, and compressor motors. (b) The reference temperature to be (2) Gas-dangerous cargo control used in paragraph (a)(2) of this section spaces. is the temperature corresponding to (3) Other spaces containing cargo the vapor pressure of the cargo at the handling equipment. set pressure of the pressure relief (b) The master shall ensure that a valves. warning sign listing the requirement for use of the ventilation system, is § 154.1846 Relief valves: Changing set pressure. posted outside of each space under paragraph (a) of this section. The master shall: (c) The master shall ensure that no (a) Supervise the changing of the set sources of ignition are put in a cargo pressure of relief valves under handling space on a vessel carrying § 154.802(b); flammable cargo unless the space is (b) Enter the change of set pressure gas free. in the vessel’s log; and (c) Ensure that a sign showing the set § 154.1852 Air breathing equipment. pressure is posted: (a) The master shall ensure that a li- (1) In the cargo control room or sta- censed officer inspects the compressed tion; and air breathing equipment at least once (2) At each relief valve. each month.

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(b) The master shall enter in the ves- § 154.1864 Vessel speed within speed sel’s log a record of the inspection re- reduction. quired under paragraph (a) of this sec- The master shall ensure that the tion that includes: speed of the vessel is not greater than (1) The date of the inspection; and the posted speed reduction. (2) The condition of the equipment at the time of the inspection. § 154.1866 Cargo hose connection: Transferring cargo. § 154.1854 Methane (LNG) as fuel. No person may transfer cargo (a) If methane (LNG) vapors are used through a cargo hose connection unless as fuel in the main propulsion system the connection has the remotely con- of a vessel, the master shall ensure trolled quick closing shut off valve re- that the fuel oil fired pilot under quired under § 154.538. § 154.705(c) is used when the vessel is on the navigable waters of the United § 154.1868 Portable blowers in per- States. sonnel access openings. (b) When the methane (LNG) fuel The master shall ensure that a port- supply is shut down due to loss of ven- able blower in a personnel access open- tilation or detection of gas, the master ing does not reduce the area of the shall ensure that the methane (LNG) opening so that it does not meet fuel supply is not used until the leak or § 154.340. other cause of the shutdown is found and corrected. § 154.1870 Bow and stern loading. (c) The master shall ensure that the (a) When the bow or stern loading required procedure under paragraph (b) piping is not in use, the master shall of this section is posted in the main lock closed the shut-off valves under machinery space. § 154.355(a)(4) or remove the spool piece (d) The master shall ensure that the under § 154.355(a)(4). oxygen concentration in the annular (b) The person in charge of cargo space of the fuel line under transfer shall ensure that after the bow § 154.706(a)(1) is 8% or less by volume or stern loading piping is used it is before methane (LNG) vapors are ad- purged of cargo vapors with inert gas. mitted to the fuel line. (c) The person in charge of cargo transfer shall ensure that entrances, § 154.1858 Cargo hose. forced or natural ventilation intakes, exhausts, and other openings to any The person in charge of cargo trans- deck house alongside the bow or stern fer shall ensure that cargo hose used loading piping are closed when this pip- for cargo transfer service meets ing is in use. §§ 154.552 through 154.562. (d) The person in charge of cargo § 154.1860 Integral tanks: Cargo colder transfer shall ensure that bow or stern than Ø10 ≥C (14 ≥F). loading piping installed in the area of the accommodation, service, or control The master shall ensure that an inte- space is not used for transfer of the fol- gral tank does not carry a cargo colder lowing: ¥ ° ° than 10 C (14 F) unless that carriage (1) Acetaldehyde. is specially approved by the Com- (2) Ammonia, anhydrous. mandant (CG–522). (3) Dimethylamine. [CGD 74–289, 44 FR 26009, May 3, 1979, as (4) Ethylamine. amended by CGD 82–063b, 48 FR 4782, Feb. 3, (5) Ethyl Chloride. 1983] (6) Methyl Chloride. (7) Vinyl Chloride. § 154.1862 Posting of speed reduction. If a speed reduction is specially ap- § 154.1872 Cargo emergency jetti- proved by the Commandant under soning. § 154.409, the master shall ensure that (a) The master shall ensure that the speed reduction is posted in the emergency jettisoning piping under wheelhouse. § 154.356, except bow and stern loading

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and discharging piping, is only used emergency jettisoning piping is not in when an emergency exists. use. (b) Emergency jettisoning piping (f) The person in charge of cargo when being used may be outside of the transfer shall ensure that after the transverse tank location under emergency jettisoning piping is used it § 154.310. is purged of cargo vapors with inert (c) The master shall ensure that gas. cargo is not jettisoned in a U.S. port. (g) The person in charge of cargo transfer shall ensure that entrances, (d) When ethylene oxide is carried, forced or natural ventilation intakes, the master shall ensure that the emer- exhausts, and other openings to accom- gency jettisoning piping with associ- modation, service, or control spaces ated pumps and fittings is on-line and facing the emergency jettisoning pip- ready for use for an emergency. ing area and alongside the emergency (e) The master shall lock closed the jettisoning piping are closed when this shut-off valves under § 154.356 when the piping is in use.

TABLE 4—SUMMARY OF MINIMUM REQUIREMENTS

Independent Control of Electrical 1 Vapor de- 3 hazard Cargo name Ship type tank type C cargo tank 2 Gauging Special requirements required vapor space tection class and group 4

Acetaldehyde IIG/IIPG ...... Inert ...... I & T ...... C ...... I-C ...... 154.1410 (c), 154.1410, 154.1710, 154.1720, 154.1870. Ammonia, an- IIG/IIPG ...... T ...... C ...... I-D ...... 154.1000, 154.1400 (c), hydrous. 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1760, 154.1870. Butadiene ...... IIG/IIPG ...... Inert ...... I ...... R ...... I-B ...... 154.1702 (b), (d), (f), 154.1710, 154.1750, 154.1818. Butane ...... IIG/IIPG ...... I ...... R ...... I-D ...... None. Butylene ...... IIG/IIPG ...... I ...... R ...... I-D ...... None. Dimethylamine IIG/IIPG ...... I & T ...... C ...... I-C ...... 154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1870. Ethane ...... IIG ...... I ...... R ...... I-D ...... None. Ethylamine ..... IIG/IIPG ...... I & T ...... C ...... I-C ...... 154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1870. Ethyl Chloride IIG/IIPG ...... I & T ...... R ...... I-D ...... 154.1870. Ethylene ...... IIG ...... I ...... R ...... I-C ...... None. Ethylene oxide IG ...... Yes ...... Inert ...... I & T ...... C ...... I-B ...... 154.660 (b) (3), 154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (d), (f), 154.1705, 154.1710, 154.1720, 154.1725, 154.1730, 154.1870 (a), (b). Methane IIG ...... I ...... C ...... I-D ...... 154.703 through (LNG). 154.709, 154.1854. Methyl acety- IIG/IIPG ...... I ...... R ...... I ...... 154.1735. lene-propadiene mixture. Methyl bro- IG ...... Yes ...... I & T ...... C ...... I-D ...... 154.660 (b) (3), mide. 154.1345 (c) (d), 154.1400 (c), 154.1405, 154.1410, 154.1702 (a), (d), 154.1705, 154.1720, 154.1870 (a), (b). Methyl chlo- IIG/IIPG ...... I & T ...... C ...... I-D ...... 154.1702 (a), 154.1870. ride. Nitrogen ...... IIIG ...... O ...... C ...... 154.1755. Propane ...... IIG/IIPG ...... I ...... R ...... I-D ...... None. Propylene ...... IIG/IIPG ...... I ...... R ...... I-D ...... None. Refrigerant ..... IIIG ...... R ...... None.

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TABLE 4—SUMMARY OF MINIMUM REQUIREMENTS—Continued

Independent Control of Electrical 1 Vapor de- 3 hazard Cargo name Ship type tank type C cargo tank 2 Gauging Special requirements required vapor space tection class and group 4

Sulfur dioxide IG ...... Yes ...... Dry ...... T ...... C ...... 154.660 (b) (3), 154.1345 (c), (d), 154.1400 (c), 154.1405, 154.1410, 154.1705, 154.1715, 154.1720, 154.1870 (a), (b). Vinyl chloride IIG/IIPG ...... I & T ...... C ...... I-D ...... 154.1405, 154.1410, 154.1702 (a) (b) (d) (f), 154.1710, 154.1740, 154.1745, 154.1750, 154.1818, 154.1830 (f), 154.1870. 1 Refrigerant gases include non-toxic, non-flammable gases such as: dichlorodifluoromethane, dichloromonofluoromethane, dichlorotetrafluoroethane, monochlorodifluoromethane, monochlorotetrafluoroethane, and monochlorotrifluoromethane. 2 As used in this column: ‘‘I’’ stands for flammable vapor detection; ‘‘T’’ stands for toxic vapor detection; ‘‘O’’ stands for oxygen detection; and see §§ 154.1345 thru 154.1360. 3 As used in this column: ‘‘C’’ stands for closed gauging; ‘‘R’’ stands for restricted gauging; and see § 154.1300. 4 The designations used in this column are from the National Electrical Code.

[CGD 74–289, 44 FR 26009, May 3, 1979; 44 FR 59234, Oct. 15, 1979]

APPENDIX A TO PART 154—EQUIVALENT specially approved by the Commandant (CG– STRESS 522) as equivalent to the following:

I. Equivalent stress (s c) is calculated by the following formula or another formula

σσσσστ=+−+22 2 cxyxyxy3

where: and its hull strain component from hull deflection and torsion. sx=total normal stress in ‘‘x’’ direction. sy=total normal stress in ‘‘y’’ direction. [CGD 74–289, 44 FR 26009, May 3, 1979, as txy=total shear stress in ‘‘xy’’ plane. amended by CGD 82–063b, 48 FR 4782, Feb. 3, II. When the static and dynamic stresses 1983] are calculated separately, the total stresses in paragraph I are calculated from the fol- APPENDIX B TO PART 154—STRESS lowing formulae or another formulae spe- ANALYSES DEFINITIONS cially approved by the Commandant (CG–522) as equivalent to the following: The following are the standard definitions of stresses for the analysis of an independent tank type B: σσ=± σ 2 xx()static∑ (( x dynamic )) Normal stress means the component of stress normal to the plane of reference. Membrane stress means the component of σσ=± σ 2 normal stress that is uniformly distributed yy()static∑ (( y dynamic )) and equal to the average value of the stress across the thickness of the section under ττ=±()static∑ (( τ dynamic ))2 consideration. xy xy xy Bending stress means the variable stress III. Each dynamic and static stress is de- across the thickness of the section under termined from its acceleration component consideration, after the subtraction of the membrane stress. Shear stress means the component of the stress acting in the plane of reference.

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Primary stress means the stress produced by the imposed loading that is necessary to bal- ≤ SRt2 25. ance the external forces and moments. (The basic characteristic of a primary stress is where: that it is not self-limiting. Primary stresses S1=distance in the meridional direction over that considerably exceed the yield strength which the equivalent stress exceeds 1.1 f. result in failure or at least in gross deforma- S2=distance in the meridional direction to tions.) another region where the limits for pri- Primary general membrane stress means the mary general membrane stress are exceed- primary membrane stress that is so distrib- ed. uted in the structure that no redistribution R=mean radius of the vessel. t=wall thickness of the vessel at the location of load occurs as a result of yielding. where the primary general membrane Primary local membrane stress means the re- stress limit is exceeded. sulting stress from both a membrane stress, f=allowable primary general membrane caused by pressure or other mechanical load- stress. ing, and a primary or a discontinuity effect Secondary stress means a normal stress or that produces excessive distortion in the shear stress caused by constraints of adja- transfer of loads to other portions of the cent parts or by self-constraint of a struc- structure. (The resulting stress is a primary ture. The basic characteristic of a secondary local membrane stress although it has some stress is that it is self-limiting. Local yield- characteristics of a secondary stress.) A ing and minor distortions can satisfy the stress region is local if: conditions that cause the stress to occur. ≤ SRt1 05. ; and PART 155 [RESERVED]

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