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§ 83.19 42 CFR Ch. I (10–1–10 Edition)

(e) A new designation of the Sec- other relevant information considered retary under this section will take ef- by the Board; fect 30 calendar days after the date on (4) An opportunity for members of which the report of the Secretary the class to contest a proposed decision under paragraph (d) of this section is to cancel or modify the prior final deci- submitted to Congress, unless Congress sion that added the class to the Cohort, takes an action that reverses or expe- including a reasonable and timely ef- dites the designation. Such new des- fort by the Secretary to notify mem- ignations and related congressional ac- bers of the class of this opportunity; tions will be further reported by the and Secretary pursuant to paragraphs (d) (5) Publication in the FEDERAL REG- and (e) of § 83.17. ISTER of a final decision to cancel or [70 FR 75953, Dec. 22, 2005] modify the prior final decision that added the class to the Cohort. § 83.19 How can the Secretary cancel [69 FR 30780, May 28, 2004. Redesignated at 70 or modify a final decision to add a FR 75953, Dec. 22, 2005] class of employees to the Cohort? (a) The Secretary can cancel a final PART 84—APPROVAL OF decision to add a class to the Cohort, RESPIRATORY PROTECTIVE DEVICES or can modify a final decision to reduce the scope of a class added by the Sec- Subpart A—General Provisions retary, if HHS obtains records relevant to radiation exposures of members of Sec. the class that enable NIOSH to esti- 84.1 Purpose. mate the radiation doses incurred by 84.2 Definitions. individual members of the class 84.3 Respirators for mine rescue or other emergency use in mines. through dose reconstructions con- ducted under the requirements of 42 Subpart B—Application for Approval CFR part 82. (b) Before canceling a final decision 84.10 Application procedures. to add a class or modifying a final deci- 84.11 Contents of application. 84.12 Delivery of respirators and compo- sion to reduce the scope of a class, the nents by applicant; requirements. Secretary intends to follow evaluation procedures that are substantially simi- Subpart C—Fees lar to those described in this part for adding a class of employees to the Co- 84.20 Examination, inspection, and testing hort. The procedures will include the of complete respirator assemblies; fees. 84.21 Examination, inspection, and testing following: of respirator components or subassem- (1) Publication of a notice in the FED- blies; fees. ERAL REGISTER informing the public of 84.22 Unlisted fees; additional fees; payment the intent of the Secretary to review by applicant prior to approval. the final decision on the basis of new information and describing procedures Subpart D—Approval and Disapproval for this review; 84.30 Certificates of approval; scope of ap- (2) An analysis by NIOSH of the util- proval. ity of the new information for con- 84.31 Certificates of approval; contents. ducting dose reconstructions under 42 84.32 Notice of disapproval. CFR part 82; the analysis will be per- 84.33 Approval labels and markings; ap- formed consistently with the require- proval of contents; use. 84.34 Revocation of certificates of approval. ments for analysis of a petition by 84.35 Changes or modifications of approved NIOSH under §§ 83.13(c)(1) and (2), and respirators; issuance of modification of 83.13(c)(2) and (3); certificate of approval. (3) A recommendation by the Board 84.36 Delivery of changed or modified ap- to the Secretary as to whether or not proved respirator. the Secretary should cancel or modify his final decision that added the class Subpart E—Quality Control to the Cohort, based upon a review by 84.40 Quality control plans; filing require- the Board of the NIOSH analysis under ments. paragraph (b)(2) of this section and any 84.41 Quality control plans; contents.

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84.42 Proposed quality control plans; ap- 84.83 Timers; elapsed time indicators; re- proval by the Institute. maining service life indicators; minimum 84.43 Quality control records; review by the requirements. Institute; revocation of approval. 84.84 Hand-operated valves; minimum re- quirements. Subpart F—Classification of Approved Res- 84.85 Breathing bags; minimum require- pirators; Scope of Approval; Atmos- ments. pheric Hazards; Service Time 84.86 Component parts exposed to oxygen pressures; minimum requirements. 84.50 Types of respirators to be approved; 84.87 Compressed gas filters; minimum re- scope of approval. quirements. 84.51 Entry and escape, or escape only; clas- 84.88 Breathing bag test. sification. 84.89 Weight requirement. 84.52 Respiratory hazards; classification. 84.90 Breathing resistance test; inhalation. 84.53 Service time; classification. 84.91 Breathing resistance test; exhalation. 84.92 Exhalation valve leakage test. Subpart G—General Construction and 84.93 Gas flow test; open-circuit apparatus. Performance Requirements 84.94 Gas flow test; closed-circuit appa- ratus. 84.60 Construction and performance require- 84.95 Service time test; open-circuit appa- ments; general. ratus. 84.61 General construction requirements. 84.96 Service time test; closed-circuit appa- 84.62 Component parts; minimum require- ratus. ments. 84.97 Test for carbon dioxide in inspired gas; 84.63 Test requirements; general. open- and closed-circuit apparatus; max- imum allowable limits. 84.64 Pretesting by applicant; approval of test methods. 84.98 Tests during low temperature oper- ation. 84.65 Conduct of examinations, inspections, 84.99 Man tests; testing conditions; general and tests by the Institute; assistance by requirements. applicant; observers; recorded data; pub- 84.100 Man tests 1, 2, 3, and 4; requirements. lic demonstrations. 84.101 Man test 5; requirements. 84.66 Withdrawal of applications; refund of 84.102 Man test 6; requirements. fees. 84.103 Man tests; performance requirements. 84.104 Gas tightness test; minimum require- Subpart H—Self-Contained Breathing ments. Apparatus TABLES TO SUBPART H OF PART 84 84.70 Self-contained breathing apparatus; description. Subpart I—Gas Masks 84.71 Self-contained breathing apparatus; 84.110 Gas masks; description. required components. 84.111 Gas masks; required components. 84.72 Breathing tubes; minimum require- 84.112 Canisters and cartridges in parallel; ments. resistance requirements. 84.73 Harnesses; installation and construc- 84.113 Canisters and cartridges; and tion; minimum requirements. markings; requirements. 84.74 Apparatus containers; minimum re- 84.114 Filters used with canisters and car- quirements. tridges; location; replacement. 84.75 Half-mask facepieces, full facepieces, 84.115 Breathing tubes; minimum require- mouthpieces; fit; minimum require- ments. ments. 84.116 Harnesses; installation and construc- 84.76 Facepieces; eyepieces; minimum re- tion; minimum requirements. quirements. 84.117 Gas mask containers; minimum re- 84.77 Inhalation and exhalation valves; min- quirements. imum requirements. 84.118 Half-mask facepieces, full facepieces, 84.78 Head harnesses; minimum require- and mouthpieces; fit; minimum require- ments. ments. 84.79 Breathing gas; minimum require- 84.119 Facepieces; eyepieces; minimum re- ments. quirements. 84.80 Interchangeability of oxygen and air 84.120 Inhalation and exhalation valves; prohibited. minimum requirements. 84.81 Compressed breathing gas and lique- 84.121 Head harnesses; minimum require- fied breathing gas containers; minimum ments. requirements. 84.122 Breathing resistance test; minimum 84.82 Gas pressure gages; minimum require- requirements. ments. 84.123 Exhalation valve leakage test.

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84.124 Facepiece tests; minimum require- 84.155 Airflow resistance test; Type C sup- ments. plied-air respirator, continuous flow 84.125 Particulate tests; canisters con- class and Type CE supplied-air res- taining particulate filters; minimum re- pirator; minimum requirements. quirements. 84.156 Airflow resistance test; Type C sup- 84.126 Canister bench tests; minimum re- plied-air respirator, demand class; min- quirements. imum requirements. TABLES TO SUBPART I OF PART 84 84.157 Airflow resistance test; Type C sup- plied-air respirator, pressure-demand Subpart J—Supplied-Air Respirators class; minimum requirements. 84.158 Exhalation valve leakage test. 84.130 Supplied-air respirators; description. 84.159 Man tests for gases and vapors; sup- 84.131 Supplied-air respirators; required plied-air respirators; general perform- components. ance requirements. 84.132 Breathing tubes; minimum require- 84.160 Man test for gases and vapors; Type A ments. and Type AE respirators; test require- 84.133 Harnesses; installation and construc- ments. tion; minimum requirements. 84.161 Man tests for gases and vapors; Type 84.134 Respirator containers; minimum re- B and Type BE respirators; test require- quirements. ments. 84.135 Half-mask facepieces, full facepieces, 84.162 Man test for gases and vapors; Type C hoods, and helmets; fit; minimum re- respirators, continuous-flow class and quirements. Type CE supplied-air respirators; test re- 84.136 Facepieces, hoods, and helmets; eye- quirements. pieces; minimum requirements. 84.163 Man test for gases and vapors; Type C 84.137 Inhalation and exhalation valves; supplied-air respirators, demand and check valves; minimum requirements. pressure-demand classes; test require- 84.138 Head harnesses; minimum require- ments. ments. 84.139 Head and neck protection; supplied- TABLES TO SUBPART J OF PART 84 air respirators; minimum requirements. 84.140 Air velocity and noise levels; hoods Subpart K—Non-Powered Air-Purifying and helmets; minimum requirements. Particulate Respirators 84.141 Breathing gas; minimum require- ments. 84.170 Non-powered air-purifying particu- 84.142 Air supply source; hand-operated or late respirators; description. motor driven air blowers; Type A sup- 84.171 Non-powered air-purifying particu- plied-air respirators; minimum require- late respirators; required components. ments. 84.172 Breathing tubes; minimum require- 84.143 Terminal fittings or chambers; Type ments. B supplied-air respirators; minimum re- 84.173 Harnesses; installation and construc- quirements. tion; minimum requirements. 84.144 Hand-operated blower test; minimum 84.174 Respirator containers; minimum re- requirements. quirements. 84.145 Motor-operated blower test; min- 84.175 Half-mask facepieces, full facepieces, imum requirements. hoods, helmets, and mouthpieces; fit; 84.146 Method of measuring the power and minimum requirements. torque required to operate blowers. 84.176 Facepieces, hoods, and helmets; eye- 84.147 Type B supplied-air respirator; min- pieces; minimum requirements. imum requirements. 84.177 Inhalation and exhalation valves; 84.148 Type C supplied-air respirator, con- minimum requirements. tinuous-flow class; minimum require- 84.178 Head harnesses; minimum require- ments. ments. 84.149 Type C supplied-air respirator, de- 84.179 Non-powered air-purifying particu- mand and pressure demand class; min- late respirators; filter identification. imum requirements. 84.180 Airflow resistance tests. 84.150 Air-supply line tests; minimum re- 84.181 Non-powered air-purifying particu- quirements. late filter efficiency level determination. 84.151 Harness test; minimum requirements. 84.182 Exhalation valve leakage test; min- 84.152 Breathing tube test; minimum re- imum requirements. quirements. 84.153 Airflow resistance test, Type A and Subpart L—Chemical Cartridge Respirators Type AE supplied-air respirators; min- imum requirements. 84.190 Chemical cartridge respirators: de- 84.154 Airflow resistance test; Type B and scription. Type BE supplied-air respirators; min- 84.191 Chemical cartridge respirators; re- imum requirements. quired components.

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84.192 Cartridges in parallel; resistance re- 84.1131 Respirators; required components. quirements. 84.1132 Breathing tubes; minimum require- 84.193 Cartridges; color and markings; re- ments. quirements. 84.1133 Harnesses; installation and con- 84.194 Filters used with chemical cartridges; struction; minimum requirements. location; replacement. 84.1134 Respirator containers; minimum re- 84.195 Breathing tubes; minimum require- quirements. ments. 84.1135 Half-mask facepieces, full facepieces, 84.196 Harnesses; installation and construc- hoods, helmets, and mouthpieces; fit; tion; minimum requirements. minimum requirements. 84.197 Respirator containers; minimum re- 84.1136 Facepieces, hoods, and helmets; eye- quirements. pieces; minimum requirements. 84.198 Half-mask facepieces, full facepieces, 84.1137 Inhalation and exhalation valves; mouthpieces, hoods, and helmets; fit; minimum requirements. minimum requirements. 84.1138 Head harnesses; minimum require- 84.199 Facepieces, hoods, and helmets; eye- ments. pieces; minimum requirements. 84.1139 Air velocity and noise levels; hoods 84.200 Inhalation and exhalation valves; and helmets; minimum requirements. minimum requirements. 84.1140 Dust, fume, and mist respirators; 84.201 Head harnesses; minimum require- performance requirements; general. ments. 84.1141 Isoamyl acetate tightness test; dust, 84.202 Air velocity and noise levels; hoods fume, and mist respirators designed for and helmets; minimum requirements. respiratory protection against fumes of 84.203 Breathing resistance test; minimum various metals having an air contamina- requirements. tion level not less than 0.05 milligram 84.204 Exhalation valve leakage test; min- per cubic meter; minimum requirements. imum requirements. 84.1142 Isoamyl acetate tightness test; res- 84.205 Facepiece test; minimum require- pirators designed for respiratory protec- ments. tion against dusts, fumes, and mists hav- 84.206 Particulate tests; respirators with fil- ing an air contamination level less than ters; minimum requirements; general. 0.05 milligram per cubic meter, or 84.207 Bench tests; gas and vapor tests; min- against radionuclides; minimum require- imum requirements; general. ments. TABLES TO SUBPART L OF PART 84 84.1143 Dust, fume, and mist air-purifying filter tests; performance requirements; Subpart M [Reserved] general. 84.1144 Silica dust test for dust, fume, and Subpart N—Special Use Respirators mist respirators; single-use or reusable filters; minimum requirements. 84.250 Vinyl chloride respirators; descrip- 84.1145 Silica dust test; non-powered single- tion. use dust respirators; minimum require- 84.251 Required components. ments. 84.252 Gas masks; requirements and tests. 84.1146 Lead fume test for dust, fume, and 84.253 Chemical-cartridge respirators; re- mist respirators; minimum require- quirements and tests. ments. 84.254 Powered air-purifying respirators; re- 84.1147 Silica mist test for dust, fume, and quirements and tests. mist respirators; minimum require- 84.255 Requirements for end-of-service-life ments. indicator. 84.1148 Tests for respirators designed for 84.256 Quality control requirements. respiratory protection against more than 84.257 Labeling requirements. one type of dispersoid; minimum require- 84.258 Fees. ments. 84.1149 Airflow resistance tests; all dust, Subparts O–JJ [Reserved] fume, and mist respirators; minimum re- quirements. Subpart KK—Dust, Fume, and Mist; Pes- 84.1150 Exhalation valve leakage test; min- ticide; Paint Spray; Powered Air-Puri- imum requirements. fying High Efficiency Respirators and 84.1151 DOP filter test; respirators designed Combination Gas Masks as respiratory protection against dusts, fumes, and mists having an air contami- 84.1100 Scope and effective dates. nation level less than 0.05 milligram per 84.1101 Definitions. cubic meter and against radionuclides; 84.1102 Examination, inspection and testing minimum requirements. of complete respirator assemblies; fees. 84.1152 Silica dust loading test; respirators 84.1103 Approval labels and markings; ap- designed as protection against dusts, proval of contents; use. fumes, and mists having an air contami- 84.1130 Respirators; description. nation level less than 0.05 milligram per

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cubic meter and against radionuclides; (a) Applicant means an individual, minimum requirements. partnership, company, corporation, as- 84.1153 Dust, fume, mist, and smoke tests; sociation, or other organization that canister bench tests; gas mask canisters containing filters; minimum require- designs, manufactures, assembles, or ments. controls the assembly of a respirator 84.1154 Canister and cartridge requirements. and who seeks to obtain a certificate of 84.1155 Filters used with canisters and car- approval for such respirator. tridges; location; replacement. (b) Approval means a certificate or 84.1156 Pesticide respirators; performance requirements; general. formal document issued by the Insti- 84.1157 Chemical cartridge respirators with tute stating that an individual res- particulate filters; performance require- pirator or combination of respirators ments; general. has met the minimum requirements of 84.1158 Dust, fume, and mist tests; res- this part, and that the applicant is au- pirators with filters; minimum require- ments; general. thorized to use and attach an approval label to any respirator, respirator con- TABLES TO SUBPART KK OF PART 84 tainer, or instruction card for any res- AUTHORITY: 29 U.S.C. 577a, 651 et seq., and pirator manufactured or assembled in 657(g); 30 U.S.C. 3, 5, 7, 811, 842(h), 844. conformance with the plans and speci- SOURCE: 60 FR 30355, June 8, 1995, unless fications upon which the approval was otherwise noted. based, as evidence of such approval. EDITORIAL NOTE: Nomenclature changes to (c) Approved means conforming to the part 84 appear at 69 FR 18803, Apr. 9, 2004. minimum requirements of this part. (d) Auxiliary equipment means a self- Subpart A—General Provisions contained breathing apparatus, the use of which is limited in underground § 84.1 Purpose. mine rescue and recovery operations to The purpose of the regulations con- situations where the wearer has ready tained in this part 84 is: access to fresh air and at least one (a) To establish procedures and pre- crew equipped with approved self-con- scribe requirements which must be met tained breathing apparatus of 2 hours in filing applications for approval by or longer rating, is in reserve at a the National Institute for Occupational Safety and Health of respirators or fresh-air base. changes or modifications of approved (e) Certification and Quality Assurance respirators; Branch means the Certification and (b) To establish a schedule of fees to Quality Assurance Branch, Division of be charged each applicant for the in- Safety Research, Appalachian Labora- spections, examinations, and testing tory for Occupational Safety and conducted by the Institute under the Health, National Institute for Occupa- provisions of this part; tional Safety and Health, 1095 (c) To provide for the issuance of cer- Willowdale Road, Morgantown, West tificates of approval or modifications Virginia 26505–2888. of certificates of approval for res- (f) Compressed-breathing gas means ox- pirators which have met the applicable ygen or air stored in a compressed construction, performance, and res- state and supplied to the wearer in gas- piratory protection requirements set eous form. forth in this part; and (g) dBA means sound pressure levels (d) To specify minimum require- in decibels, as measured with the A- ments and to prescribe methods to be weighted network of a standard sound employed by the Institute and by the level meter using slow response. applicant in conducting inspections, examinations, and tests to determine (h) Dust means a solid mechanically the effectiveness of respirators used produced particle with a size ranging during entry into or escape from haz- from submicroscopic to macroscopic. ardous atmospheres. (i) Respirators for entry into and escape from means respiratory devices pro- § 84.2 Definitions. viding protection during entry into and As used in this part— escape from hazardous atmospheres.

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(j) Respirators for escape only means (t) Institute means the National Insti- respiratory devices providing protec- tute for Occupational Safety and tion only during escape from hazardous Health, Department of Health and atmospheres. Human Services. (k) A facepiece or mouthpiece is a res- (u) Liquefied-breathing gas means oxy- pirator component designed to provide gen or air stored in liquid form and a gas-tight or dust-tight fit with the supplied to the wearer in a gaseous face and may include headbands, form. valves, and connections for canisters, (v) Mist means a liquid condensation cartridges, filters, or respirable gas particle with a size ranging from sub- source. microscopic to macroscopic. (l) Final inspection means that activ- (w) MSHA means the Mine Safety and ity carried out on a product after all Health Administration, U.S. Depart- manufacturing and assembly oper- ment of Labor. ations are completed to insure com- (x) Not immediately dangerous to life or pleteness and adherence to perform- health means any hazardous atmos- ance or other specifications, including phere which may produce physical dis- satisfactory appearance. comfort immediately, chronic poi- (m) Fume means a solid condensation soning after repeated exposure, or particle, generally less than 1 microm- acute adverse physiological symptoms eter in diameter. after prolonged exposure. (n) Gas means an aeriform fluid (y) Oxygen-deficient atmosphere means which is in a gaseous state at ordinary an atmosphere which contains an oxy- temperature and pressure. gen partial pressure of less than 148 (o) means: Hazardous atmosphere millimeters of mercury (19.5 percent by (1) Any atmosphere containing a volume at sea level). toxic or disease producing gas, vapor, (z) Powered air-purifying respirator dust, fume, mist, or pesticide, either means a device equipped with a face- immediately or not immediately dan- piece, hood, or helmet, breathing tube, gerous to life or health; or canister, cartridge, filter, canister with (2) Any oxygen-deficient atmosphere. filter, or cartridge with filter, and a (p) A hood or helmet is a respirator blower. component which covers the wearer’s head and neck, or head, neck, and (aa) Respirator means any device de- shoulders, and is supplied with incom- signed to provide the wearer with res- ing respirable air for the wearer to piratory protection against inhalation breathe. It may include a headharness of a hazardous atmosphere. and connection for a breathing tube. (bb) Single-use respirator means a res- () Immediately dangerous to life or pirator that is entirely discarded after health means conditions that pose an excessive resistance, sorbent exhaus- immediate threat to life or health or tion, or physical damage renders it un- conditions that pose an immediate suitable for further use. threat of severe exposure to contami- (cc) Vapor means the gaseous state of nants, such as radioactive materials, a substance that is solid or liquid at or- which are likely to have adverse cumu- dinary temperature and pressure. lative or delayed effects on health. (r) Incoming inspection means the ac- § 84.3 Respirators for mine rescue or tivity of receiving, examining, and ac- other emergency use in mines. cepting only those materials and parts (a)(1) NIOSH and the Mine Safety and whose quality conforms to specifica- Health Administration (MSHA), U.S. tion requirements. Department of Labor, shall jointly re- (s) In-process inspection means the view and issue certifications for res- control of products at the source of pirators used for mine emergencies and production and at each step of the mine rescue, including any associated manufacturing process, so that depar- service-life plans, users’ manuals and tures from specifications can be cor- other supporting documentation. rected before defective components or (2) Each certification for a respirator materials are assembled into the fin- designed for mine rescue or other ished product. emergency use in mines shall include,

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as a condition of approval, any use lim- § 84.11 Contents of application. itations related to mine safety and (a) Each application for approval health. shall contain a complete written de- (b) NIOSH and MSHA shall jointly scription of the respirator for which determine appropriate recall and ret- approval is requested together with rofit remedies for field complaints or drawings and specifications (and lists identified deficiencies involving any thereof) showing full details of con- respirators used in the mining environ- struction of the respirator and of the ment. materials used. (b) Drawings shall be titled, num- Subpart B—Application for bered, and dated; any revision dates Approval shall be shown on the drawings, and the purpose of each revision being § 84.10 Application procedures. sought shall be shown on the drawing or described on an attachment to the (a) Inspection, examination, and test- drawing to which it applies. ing leading to the approval of the types (c) Each application for approval of respirators classified in subpart F of shall contain a proposed plan for qual- this part shall be undertaken by the In- ity control which meets the minimum stitute only pursuant to written appli- requirements set forth in subpart E of cations which meet the minimum re- this part. quirements set forth in this subpart B. (d) Each application shall contain a (b) Applications shall be submitted to statement that the respirator has been the Certification and Quality Assur- pretested by the applicant as pre- ance Branch, and shall be accompanied scribed in § 84.64, and shall include the by a check, bank draft, or money order results of such tests. in the amount specified in subpart C of (e) Each application for approval this part, payable to the order of the shall contain a statement that the res- National Institute for Occupational pirator and component parts submitted Safety and Health. for approval are either prototypes, or (c) Except as provided in § 84.64, the made on regular production tooling, examination, inspection, and testing of with no operation included which will all respirators shall be conducted by not be incorporated in regular produc- the Certification and Quality Assur- tion processing. ance Branch. (The information collections contained in (d) Applicants, manufacturers, or this section are approved under OMB control their representatives may visit or com- number 0920–0109) municate with the Certification and § 84.12 Delivery of respirators and Quality Assurance Branch in order to components by applicant; require- discuss the requirements for approval ments. of any respirator or the proposed de- (a) Each applicant shall, when an ap- signs thereof. No charge shall be made plication is filed pursuant to § 84.10, be for such consultation and no written advised by the Institute of the total report shall be issued to applicants, number of respirators and component manufacturers, or their representatives parts required for testing. by the Institute as a result of such con- (b) The applicant shall deliver, at his sultation. own expense, the number of completely (e) Respirators having electrical or assembled respirators and component electronic components that are re- parts required for testing, to the Cer- quired to be permissible under chapter tification and Quality Assurance I of title 30 shall be tested in accord- Branch. ance with 30 CFR part 18. Applications (c) Respirators and component parts for approval of such respirators by submitted for approval must be made MSHA shall be submitted in writing to: from materials specified in the applica- MSHA, Approval and Certification Cen- tion. ter, Box 251, Industrial Park Road, (d) One completely assembled res- Triadelphia, West Virginia 26059. pirator approved under the provisions

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of this part may be retained by the In- § 84.22 Unlisted fees; additional fees; stitute as a laboratory exhibit, the re- payment by applicant prior to ap- maining respirators may be returned to proval. the applicant at his own expense, upon (a) Applications for the examination, written request within 30 days after no- inspection and testing of complete res- tice of approval. If no such request is pirator assemblies which are not listed made, the respirators will be disposed in § 84.20, or for the examination, in- of by the Institute in such manner as it spection, and testing of respirator com- deems appropriate. ponents or subassemblies which are not (e) Where a respirator fails to meet listed in § 84.21, shall be accompanied the requirements for approval set forth by the following deposits: in this part, all respirators and compo- Complete respirator assembly ...... $1,500 nents delivered in accordance with this Each individual component or sub- section may be returned to the appli- assembly ...... 500 cant at his own expense, upon written (b) The Institute reserves the right to request within 30 days after notice of conduct any examination, inspection, disapproval. If no such request is made, or test it deems necessary to determine the respirators will be disposed of by the quality and effectiveness of any the Institute in such manner as it listed or unlisted respirator assembly deems appropriate. or respirator component or sub- assembly, and to assess the cost of Subpart C—Fees such examinations, inspections, or tests against the applicant prior to the § 84.20 Examination, inspection, and issuance of any approval for such as- testing of complete respirator as- sembly, component, or subassembly. semblies; fees. (c) The fees charged for the examina- tion, inspection, and testing of unlisted Except as provided in § 84.22, the fol- respirator assemblies, unlisted indi- lowing fees shall be charged by the In- vidual respirator components or sub- stitute for the examination, inspection assemblies, and for the additional ex- and testing of complete respirator as- amination, inspection, and testing of semblies: listed respirator assemblies and compo- Self-contained breathing apparatus: nents or subassemblies shall be at the Entry and escape, 1 hour or more ... $3,500 rate of $100 per day for each man-day Entry and escape, less than 1 hour 2,750 required to be expended by the Insti- Escape only ...... 2,000 tute. Gas masks: (d) Upon completion of all examina- Single hazard ...... 1,100 tions, inspections, and tests of unlisted Type N ...... 4,100 respirator assemblies or components, Supplied-air respirators ...... 750 or following the completion of any ad- Particulate respirators ...... 1,250 ditional examination, inspections, or Chemical cartridge respirators ...... 1,150 tests of listed assemblies, or compo- nents or subassemblies, including re- § 84.21 Examination, inspection, and testing subsequent to disapproval, the testing of respirator components or subassemblies; fees. Institute shall advise the applicant in writing of the total cost assessed and Except as provided in § 84.22, the fol- the additional amount, if any, which lowing fees shall be charged by the In- must be paid to the Institute as a con- stitute for the examination, inspection dition of approval. and testing of the individual respirator (e) In the event the amount assessed components or subassemblies: by the Institute for unlisted assem- Facepieces ...... $450 blies, or components or subassemblies Canisters ...... 900 is less than the amount of the deposit Cartridges ...... 600 submitted in accordance with para- Filters ...... 650 graph (a) of this section, the Institute Hoses ...... 250 shall refund the overpayment upon the Blowers ...... 250 issuance of any approval or notice of Harnesses ...... 100 disapproval.

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Subpart D—Approval and (b) The certificate of approval shall Disapproval specifically set forth any restrictions or limitations on the respirator’s use § 84.30 Certificates of approval; scope in hazardous atmospheres. of approval. (c) Each certificate of approval shall (a) The Institute shall issue certifi- be accompanied by the drawings and cates of approval pursuant to the pro- specifications (and lists thereof) sub- visions of this subpart only for indi- mitted by the applicant in accordance vidual, completely assembled res- with § 84.11. These drawings and speci- pirators which have been examined, in- fications shall be referenced in the cer- spected, and tested, and which meet tificate of approval, and shall be main- the minimum requirements set forth in tained by the applicant. The drawings subparts H through L of this part, as and specifications listed in each certifi- applicable. cate of approval shall set forth in de- (b) The Institute will not issue cer- tail the design and construction re- tificates of approval for any respirator quirements which shall be met by the component or for any respirator sub- applicant during commercial produc- assembly. tion of the respirator. (c) The Institute shall not issue an (d) Each certificate of approval shall informal notification of approval. How- be accompanied by a reproduction of ever, if the application for approval, the approval label design to be em- submitted in accordance with § 84.11, ployed by the applicant with each ap- states that the submitted respirator proved respirator, as provided in § 84.33. and component parts are only proto- (e) No test data or specific laboratory types, the Institute will examine, in- findings will accompany any certifi- spect, and test such respirator and cate of approval, however, the Institute component parts in accordance with will release pertinent test data and the provisions of this part. If, upon completion of such examinations, in- specific findings upon written request spections and tests, it is found that the by the applicant, or as required by prototype meets the minimum require- statute or regulation. ments set forth in this part, the Insti- (f) Each certificate of approval shall tute may inform the applicant, in writ- also contain the approved quality con- ing, of the results of the examinations, trol plan as specified in § 84.42. inspections, and tests, and may require him to resubmit respirators and com- § 84.32 Notice of disapproval. ponent parts made on regular produc- (a) If, upon the completion of the ex- tion tooling, with no operations in- aminations, inspections, and tests re- cluded which will not be incorporated quired to be conducted in accordance in regular production processing, for with the provisions of this part, it is further examination, inspection, and found that the respirator does not meet testing, prior to issuance of the certifi- the minimum requirements set forth in cate of approval. this part, the Institute shall issue a (d) Applicants required to resubmit written notice of disapproval to the ap- respirators and component parts made plicant. on regular production tooling, with no (b) Each notice of disapproval shall operation included which will not be be accompanied by all pertinent data incorporated in regular production processing, shall be charged fees in ac- or findings with respect to the defects cordance with subpart C of this part. of the respirator for which approval was sought with a view to the possible § 84.31 Certificates of approval; con- correction of any such defects. tents. (c) The Institute shall not disclose, (a) The certificate of approval shall except to the applicant or as required contain a classification and a descrip- by statute or regulation, any data, tion of the respirator or combination of findings, or other information with re- respirators for which it is issued, as spect to any respirator for which a no- provided in this part. tice of disapproval is issued.

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§ 84.33 Approval labels and markings; propriate, restrictions or limitations approval of contents; use. placed upon the use of the respirator (a) Full-scale reproductions of ap- by the Institute. The approval number proval labels and markings, and a assigned by the Institute shall be des- sketch or description of the method of ignated by the prefix TC and a serial application and position on the har- number. ness, container, canister, cartridge, fil- (c) The Institute shall, where nec- ter, or other component, together with essary, notify the applicant when addi- instructions for the use and mainte- tional labels, markings, or instructions nance of the respirator shall be sub- will be required. mitted to the Institute for approval. (d) Approval labels and markings (b) Approval labels shall bear the em- shall only be used by the applicant to blem of the National Institute for Oc- whom they were issued. cupational Safety and Health and the (e) Legible reproductions or abbre- seal of the Department of Health and viated forms of the label approved by Human Services, the applicant’s name the Institute for use on each respirator and address, an approval number as- shall be attached to or printed at the signed by the Institute and, where ap- following locations:

Respirator type Label type Location

Self-contained breathing appa- Entire ...... Harness assembly and canister (where applicable). ratus. Gas mask ...... Entire ...... Mask container and canister. Supplied air respirator ...... do ...... Respirator container or instruction card. Particulate respirator ...... do ...... Respirator container and filter container. Abbreviated ...... Filters. Chemical-cartridge respirator ... Entire ...... Respirator container, cartridge container, and filter containers (where applicable). Abbreviated ...... Cartridges and filters and filter containers.

(f) The use of any Institute approval but are not limited to, misuse of ap- label obligates the applicant to whom proval labels and markings, misleading it is issued to maintain or cause to be advertising, and failure to maintain or maintained the approved quality con- cause to be maintained the quality trol sampling schedule and the accept- control requirements of the certificate able quality level for each char- of approval. acteristic tested, and to assure that it is manufactured according to the draw- § 84.35 Changes or modifications of ap- ings and specifications upon which the proved respirators; issuance of certificate of approval is based. modification of certificate of ap- proval. (g) Each respirator, respirator com- ponent, and respirator container shall, (a) Each applicant may, if he desires as required by the Institute to assure to change any feature of an approved quality control and proper use of the respirator, request a modification of respirator, be labeled distinctly to the original certificate of approval show the name of the applicant, and issued by the Institute for such res- the name and letters or numbers by pirator by filing an application for which the respirator or respirator com- such modification in accordance with ponent is designated for trade pur- the provisions of this section. poses, and the lot number, serial num- (b) Applications shall be submitted as ber, or approximate date of manufac- for an original certificate of approval, ture. with a request for a modification of the existing certificate to cover any pro- § 84.34 Revocation of certificates of ap- posed change. proval. (c) The application shall be accom- The Institute reserves the right to panied by appropriate drawings and revoke, for cause, any certificate of ap- specifications, and by a proposed qual- proval issued pursuant to the provi- ity control plan which meets the re- sions of this part. Such causes include, quirements of subpart E of this part.

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(d) The application for modification, (3) Control and calibration of meas- together with the accompanying mate- uring and test equipment; rial, shall be examined by the Institute (4) Control of purchased material to to determine whether testing will be include incoming inspection; required. (5) Lot identification, control of (e) The Institute shall inform the ap- processes, manufacturing, fabrication, plicant of the fee required for any addi- and assembly work conducted in the tional testing and the applicant will be applicant’s plant; charged for the actual cost of any ex- (6) Audit of final inspection of the amination, inspection, or test required, completed product; and and such fees shall be submitted in ac- (7) The organizational structure nec- cordance with the provisions of subpart essary to carry out these provisions. C of this part. (b) Each provision for incoming and (f) If the proposed change or modi- final inspection in the quality control fication meets the requirements of this plan shall include a procedure for the part, a formal certificate of modifica- selection of a sample of respirators and tion will be issued, accompanied, where the components thereof for testing, in necessary, by a list of new and revised accordance with procedures set forth in drawings and specifications covering Military Standard MIL-STD-414, 11 the change(s) and reproductions of re- June 1957, including Change Notice No. vised approval labels. 1, ‘‘Sampling Procedures and Tables for (The information collections contained in Inspection by Variables for Percent De- this section are approved under OMB control fective,’’ or an approved equivalent number 0920–0109) sampling procedure, or an approved combination of sampling procedures. § 84.36 Delivery of changed or modi- The procedure of Military Standard fied approved respirator. MIL-STD-105D, 29 April 1963, ‘‘Sam- An approved respirator for which a pling Procedures and Tables for Inspec- formal certificate of modification has tion by Attributes,’’ is an example of been issued shall be delivered, with an equivalent sampling procedure. proper markings and containers, by the MIL-STD-414 is incorporated by ref- applicant to the Certification and erence and has been approved by the Quality Assurance Branch, as soon as Director of the Federal Register in ac- it is commercially produced. cordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Subpart E—Quality Control DODSSP, Standardization Document Order Desk, 700 Robbins Avenue, Bldg. § 84.40 Quality control plans; filing re- 4D, Philadelphia, PA 19111–5094. Copies quirements. may be inspected at the NIOSH, Cer- As a part of each application for ap- tification and Quality Assurance proval or modification of approval sub- Branch, 1095 Willowdale Road, Morgan- mitted pursuant to this part, each ap- town, WV 26505–2888, or at the National plicant shall file with the Institute a Archives and Records Administration proposed quality control plan which (NARA). For information on the avail- shall be designed to assure the quality ability of this material at NARA, call of respiratory protection provided by 202–741–6030, or go to: http:// the respirator for which approval is www.archives.gov/federallregister/ sought. codeloflfederallregulations/ ibrllocations.html. Copies of MIL-STD- § 84.41 Quality control plans; contents. 105D may be inspected or obtained from (a) Each quality control plan shall the NIOSH, Certification and Quality contain provisions for the management Assurance Branch, 1095 Willowdale of quality, including: Road, Morgantown, WV 26505–2888. In- (1) Requirements for the production coming bulk raw material inspection of quality data and the use of quality or verification of specification, and in- control records; process inspection shall be sufficient to (2) Control of engineering drawings, ensure control of product quality documentations, and changes; through the manufacturing cycle.

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(c) The sampling procedure shall in- tributes,’’ is an example of an equiva- clude a list of the characteristics to be lent procedure. tested by the applicant or his agent. (i) Subject to the approval of the In- (d) The characteristics listed in ac- stitute, where the quality control plan cordance with paragraph (c) of this sec- provisions for raw material, processes, tion shall be classified according to the manufacturing, and fabrication, in- potential effect of such defect and spections are adequate to ensure con- grouped into the following classes: trol of finished article quality, destruc- (1) Critical. A defect that judgment tive testing of finished articles may be and experience indicate is likely to re- conducted at a lower level of inspec- sult in a condition immediately haz- tion than that specified in paragraph ardous to life or health for individuals (h) of this section. using or depending upon the respirator; (The information collections contained in (2) Major A. A defect, other than crit- this section are approved under OMB control ical, that is likely to result in failure number 0920–0109) to the degree that the respirator does not provide any respiratory protection, § 84.42 Proposed quality control plans; or a defect that reduces protection and approval by the Institute. is not detectable by the user; (a) Each proposed quality control (3) Major B. A defect, other than plan submitted in accordance with this Major A or critical, that is likely to re- subpart shall be reviewed by the Insti- sult in reduced respiratory protection, tute to determine its effectiveness in and is detectable by the user; and ensuring the quality of respiratory pro- (4) Minor. A defect that is not likely tection provided by the respirator for to materially reduce the usability of which an approval is sought. the respirator for its intended purpose, (b) If the Institute determines that or a defect that is a departure from es- the proposed quality control plan sub- tablished standards and has little bear- mitted by the applicant will not ensure ing on the effective use or operation of adequate quality control, the Institute the respirator. shall require the applicant to modify (e) The quality control inspection the procedures and testing require- test method to be used by the applicant ments of the plan prior to approval of or his agent for each characteristic re- the plan and issuance of any certificate quired to be tested shall be described in of approval. detail. (c) Approved quality control plans shall constitute a part of and be incor- (f) Each item manufactured shall be porated into any certificate of approval 100 percent inspected for defects in all issued by the Institute, and compliance critical characteristics and all defec- with such plans by the applicant shall tive items shall be rejected. be a condition of approval. (g) The Acceptable Quality Level (AQL) for each major or minor defect § 84.43 Quality control records; review so classified by the applicant shall be: by the Institute; revocation of ap- (1) Major A. 1.0 percent; proval. (2) Major B. 2.5 percent; and (a) The applicant shall keep quality (3) Minor. 4.0 percent. control inspection records sufficient to (h) Except as provided in paragraph carry out the procedures required in (i) of this section, inspection level IV MIL-STD-414, 11 June 1957, including as described in MIL-STD-414, 11 June Change Notice No. 1, ‘‘Sampling Proce- 1957, including Change Notice No.1, dures and Tables for Inspection by ‘‘Sampling Procedures and Tables for Variables for Percent Defective,’’ or an Inspection by Variables for Percent De- approved equivalent sampling proce- fective,’’ or an equivalent procedure, dure. MIL-STD-105D, 29 April 1963, shall be used for major and minor char- ‘‘Sampling Procedures and Tables for acteristics and 100 percent inspection Inspection by Attributes,’’ is an exam- for critical characteristics. Inspection ple of an approved equivalent sampling level II as described in MIL-STD-105D, procedure. MIL-STD-414 is incor- 29 April 1963, ‘‘Sampling Procedures porated by reference and has been ap- and Tables for Inspection by At- proved by the Director of the Federal

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Register in accordance with 5 U.S.C. § 84.51 Entry and escape, or escape 552(a) and 1 CFR part 51. Copies may be only; classification. obtained from DODSSP, Standardiza- Respirators described in subparts H tion Document Order Desk, 700 Robbins through L of this part shall be classi- Avenue, Bldg. 4D, Philadelphia, Pa. fied for use as follows: 19111–5094. Copies may be inspected at (a) Entry and escape. Respirators de- the NIOSH, Certification and Quality signed and approved for use during Assurance Branch, 1095 Willowdale entry into a hazardous atmosphere, Road, Morgantown, WV 26505–2888, or and for escape from a hazardous atmos- at the National Archives and Records phere; or Administration (NARA). For informa- (b) Escape only. Respirators designed tion on the availability of this mate- and approved for use only during es- rial at NARA, call 202–741–6030, or go cape from a hazardous atmosphere. to: http://www.archives.gov/ federallregister/ § 84.52 Respiratory hazards; classifica- tion. codeloflfederallregulations/ ibrllocations.html. Copies of MIL-STD- Respirators described in subparts H 105D may be inspected or obtained from through L of this part shall be classi- the NIOSH, Certification and Quality fied as approved for use against any or Assurance Branch, 1095 Willowdale all of the following respiratory haz- Road, Morgantown, WV 26505–2888. ards: (b) The Institute reserves the right to (a) Oxygen deficiency; (b) Gases and vapors; and have its representatives inspect the ap- (c) Particles, including dusts, fumes plicant’s quality control test methods, and mists. equipment, and records, and to inter- view any employee or agent of the ap- § 84.53 Service time; classification. plicant in regard to quality control (a) Respirators described in subparts test methods, equipment, and records. H through L of this part shall be classi- (c) The Institute reserves the right to fied, where applicable, as approved for revoke, for cause, any certificate of ap- use during the following prescribed proval where it is found that the appli- service times: cant’s quality control test methods, (1) Four hours; equipment, or records do not ensure ef- (2) Three hours; fective quality control over the res- (3) Two hours; pirator for which the approval was (4) One hour; issued. (5) Forty-five minutes; (The information collections contained in (6) Thirty minutes; this section are approved under OMB control (7) Fifteen minutes; number 0920–0109) (8) Ten minutes; (9) Five minutes; or (10) Three minutes. Subpart F—Classification of Ap- (b) Other service times may be pre- proved Respirators; Scope of scribed by the Institute. Approval; Atmospheric Haz- ards; Service Time Subpart G—General Construction and Performance Requirements § 84.50 Types of respirators to be ap- proved; scope of approval. § 84.60 Construction and performance Approvals shall be issued for the requirements; general. types of respirators which have been (a) The Institute shall issue approv- classified pursuant to this subpart F, als for the types of respirators de- have been inspected, examined and scribed in subparts H through L of this tested by the Institute, in accordance part which have met the minimum re- with the provisions of subparts G quirements set forth for such res- through L of this part, and have been pirators in this part. found to provide respiratory protection (b) In addition to the types of res- for fixed periods of time against the pirators specified in subparts H hazards specified in such approval. through L of this part, the Institute

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shall issue approvals for other res- each of the individual respirator types piratory protective devices not specifi- which have been combined shall, as ap- cally described in this part subject to plicable, meet the minimum require- such additional requirements as may ments for such respirators set forth in be imposed in accordance with subparts H through L of this part, and § 84.63(c). such combination respirators, except as specified in § 84.70(b)(2), will be clas- § 84.61 General construction require- sified by the type of respirator in the ments. combination which provides the least (a) Respirators will not be accepted protection to the user. by the Institute for examination, in- (c) In addition to the minimum re- spection and testing unless they are de- quirements set forth in subparts H signed on sound engineering and sci- through L of this part, the Institute re- entific principles, constructed of suit- serves the right to require, as a further able materials and evidence good work- condition of approval, any additional manship. requirements deemed necessary to es- (b) Respirator components which tablish the quality, effectiveness, and come into contact with the wearer’s safety of any respirator used as protec- skin shall be made of nonirritating ma- tion against hazardous atmospheres. terials. (d) Where it is determined after re- (c) Components replaced during or ceipt of an application that additional after use shall be constructed of mate- requirements will be required for ap- rials which will not be damaged by nor- proval, the Institute will notify the ap- mal handling. plicant in writing of these additional (d) Mouthpieces, hoods, helmets, and requirements, and necessary examina- facepieces, except those employed in tions, inspections, or tests, stating single-use respirators, shall be con- generally the reasons for such require- structed of materials which will with- ments, examinations, inspections, or stand repeated disinfection as rec- tests. ommended by the applicant in his in- structions for use of the device. § 84.64 Pretesting by applicant; ap- proval of test methods. § 84.62 Component parts; minimum re- quirements. (a) Prior to making or filing any ap- (a) The component parts of each res- plication for approval or modification pirator shall be: of approval, the applicant shall con- (1) Designed, constructed, and fitted duct, or cause to be conducted, exami- to insure against creation of any haz- nations, inspections, and tests of res- ard to the wearer; pirator performance which are equal to (2) Assembled to permit easy access or exceed the severity of those pre- for inspection and repair of functional scribed in this part. parts; and (b) With the application, the appli- (3) Assembled to permit easy access cant shall provide a statement to the to parts which require periodic clean- Institute showing the types and results ing and disinfecting. of the examinations, inspections, and (b) Replacement parts shall be de- tests required under paragraph (a) of signed and constructed to permit easy this section and state that the res- installation and to maintain the effec- pirator meets the minimum require- tiveness of the respirator. ments of subparts H through L of this part, as applicable. Complete examina- § 84.63 Test requirements; general. tion, inspection, and test data shall be (a) Each respirator and respirator retained on file by the applicant and be component shall when tested by the ap- submitted, upon request, to the Insti- plicant and by the Institute, and meet tute. the applicable requirements set forth (c) The Institute may, upon written in subparts H through L of this part. request by the applicant, provide draw- (b) Where a combination respirator is ings and descriptions of its test equip- assembled from two or more types of ment and otherwise assist the appli- respirators, as described in this part, cant in establishing a test laboratory

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or securing the services of a testing ing the course of any examinations, in- agency. spections, or tests conducted pursuant (d) No approval will be issued until to such application. The total amount the Institute has validated the appli- due shall be determined in accordance cant’s test results. with the provisions of § 84.22 and as- sessed against the fees submitted by § 84.65 Conduct of examinations, in- the applicant. If the total amount as- spections, and tests by the Institute; sessed is less than the fees submitted, assistance by applicant; observers; recorded data; public demonstra- the Institute shall refund the balance tions. together with a statement of the charges made for services rendered. (a) All examinations, inspections, and tests conducted pursuant to sub- parts H through L of this part will be Subpart H—Self-Contained under the sole direction and control of Breathing Apparatus the Institute. (b) The Institute may, as a condition § 84.70 Self-contained breathing appa- ratus; description. of approval, require the assistance of the applicant or agents of the applicant (a) Self-contained breathing appa- during the assembly, disassembly, or ratus, including all completely assem- preparation of any respirator or res- bled, portable, self-contained devices pirator component prior to testing or designed for use as respiratory protec- in the operation of such equipment tion during entry into and escape from during testing. or escape only from hazardous (c) Only Institute personnel, persons atmospheres, are described as follows: assisting the Institute pursuant to (1) Closed-circuit apparatus. An appa- paragraph (b) of this section, and such ratus of the type in which the exhala- other persons as are requested by the tion is rebreathed by the wearer after Institute or the applicant to be observ- the carbon dioxide has been effectively ers, shall be present during any exam- removed and a suitable oxygen con- ination, inspection, or test conducted centration restored from sources com- prior to the issuance of an approval by posed of: the Institute for the equipment under (i) Compressed oxygen; or consideration. (ii) Chemical oxygen; or (d) The Institute shall hold as con- (iii) Liquid-oxygen. fidential any analyses, drawings, speci- (2) Open-circuit apparatus. An appa- fications, or materials submitted by ratus of the following types from which the applicant and shall not disclose exhalation is vented to the atmosphere any principles or patentable features of and not rebreathed: such equipment, except as required by (i) Demand-type apparatus. An appa- statute or regulation. ratus in which the pressure inside the (e) As a condition of each approval facepiece in relation to the immediate issued for any respirator, the Institute environment is positive during exhala- reserves the right, following the tion and negative during inhalation; or issuance of such approval, to conduct (ii) Pressure-demand-type apparatus. such public tests and demonstrations An apparatus in which the pressure in- of the approved respiratory equipment side the facepiece in relation to the im- as is deemed appropriate. mediate environment is positive during both inhalation and exhalation. § 84.66 Withdrawal of applications; re- (b) The following respirators may be fund of fees. classified as designed and approved for (a) Any applicant may, upon a writ- use during emergency entry into a haz- ten request submitted to the Institute, ardous atmosphere: withdraw any application for approval (1) A combination respirator which of any respirator. includes a self-contained breathing ap- (b) Upon receipt of a written request paratus; and for the withdrawal of an application, (2) A Type ‘‘C’’ or Type ‘‘CE’’ sup- the Institute shall determine the total plied air respirator, where— man-days expended and the amount (i) The self-contained breathing appa- due for services already performed dur- ratus is classified for 3-, 5-, or 10-

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minute service time and the air line (d) Shutoff of airflow due to kinking, supply is used during entry; or or from chin or arm pressure. (ii) The self-contained breathing ap- paratus is classified for 15 minutes or § 84.73 Harnesses; installation and con- longer service time and not more than struction; minimum requirements. 20 percent of the rated capacity of the (a) Each apparatus shall, where nec- air supply is used during entry. essary, be equipped with a suitable har- (c) Self-contained breathing appa- ness designed and constructed to hold ratus classified for less than 1 hour the components of the apparatus in po- service time will not be approved for sition against the wearer’s body. use during underground mine rescue (b) Harnesses shall be designed and and recovery operations except as aux- constructed to permit easy removal iliary equipment. and replacement of apparatus parts (d) Self-contained breathing appa- and, where applicable, provide for hold- ratus classified for less than 30 min- utes’ service time will not be approved ing a full facepiece in the ready posi- for use as auxiliary equipment during tion when not in use. underground mine rescue and recovery § 84.74 Apparatus containers; min- operations. imum requirements. § 84.71 Self-contained breathing appa- (a) Apparatus may be equipped with a ratus; required components. substantial, durable container bearing (a) Each self-contained breathing ap- markings which show the applicant’s paratus described in § 84.70 shall, where name, the type and commercial des- its design requires, contain the fol- ignation of the respirator it contains, lowing component parts: and all appropriate approval labels. (1) Facepiece or mouthpiece, and (b) Containers supplied by the appli- noseclip; cant for carrying or storing self-con- (2) Respirable breathing gas con- tained breathing apparatus will be in- tainer; spected, examined, and tested as com- (3) Supply of respirable breathing ponents of the respirator for which ap- gas; proval is sought. (4) Gas pressure or liquid level gages; (c) Containers for self-contained (5) Timer; breathing apparatus shall be designed (6) Remaining service life indicator and constructed to permit easy re- or warning device; moval of the apparatus. (7) Hand-operated valves; (8) Breathing bag; § 84.75 Half-mask facepieces, full (9) Safety relief valve or safety relief facepieces, mouthpieces; fit; min- system; and imum requirements. (10) Harness. (a) Half-mask facepieces and full (b) The components of each self-con- facepieces shall be designed and con- tained breathing apparatus shall meet structed to fit persons with various fa- the minimum construction require- cial shapes and sizes, either: ments set forth in subpart G of this (1) By providing more than one face- part. piece size; or § 84.72 Breathing tubes; minimum re- (2) By providing one facepiece size quirements. which will fit varying facial shapes and Flexible breathing tubes used in con- sizes. junction with breathing apparatus (b) Full facepieces shall provide for shall be designed and constructed to the optional use of corrective spec- prevent: tacles or lenses which shall not reduce (a) Restriction of free head move- the respiratory protective qualities of ment; the apparatus. (b) Disturbance of the fit of (c) Apparatus with mouthpieces shall facepieces and mouthpieces; be equipped with noseclips which are (c) Interference with the wearer’s ac- securely attached to the mouthpiece or tivities; and apparatus and provide an airtight seal.

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(d) Facepieces shall be designed to (b) Oxygen, including liquid oxygen, prevent eyepiece, spectacle, and lens shall contain not less than 99.0 percent, fogging. by volume, of pure O2, not more than 0.03%, by volume, carbon dioxide, and § 84.76 Facepieces; eyepieces; min- not more than 0.001%, by volume, car- imum requirements. bon monoxide. Methods for making (a) Facepieces shall be designed and these determinations can be found in constructed to provide adequate vision the U.S. Pharmacopeia National For- which is not distorted by the eyepiece. mulary. Containers used for oxygen (b) All eyepieces shall be designed must not be treated with any toxic, and constructed to be impact and pene- sleep-inducing, narcosis-producing, or tration resistant. Federal Specifica- respiratory tract irritating compounds. tion, Mask, Air Line: and Respirator, (c) Compressed, gaseous breathing air Air Filtering, Industrial, GGG-M-125d, shall meet the applicable minimum October 11, 1965 with interim amend- grade requirements for Type I gaseous ment-1, July 30, 1969, is an example of air set forth in the Compressed Gas As- an appropriate standard for deter- sociation Commodity Specification for mining impact and penetration resist- Air, G–7.1, 1966 (Grade D or higher qual- ance. Copies of GGG-M-125d may be ob- ity). G–7.1 is incorporated by reference tained from the NIOSH, Certification and has been approved by the Director and Quality Assurance Branch, 1095 of the Federal Register in accordance Willowdale Road, Morgantown, WV with 5 U.S.C. 552(a) and 1 CFR part 51. 26505–2888. Copies may be obtained from American National Standards Institute, Inc., 1430 § 84.77 Inhalation and exhalation Broadway, New York, NY 10018. Copies valves; minimum requirements. may be inspected at the NIOSH, Cer- (a) Inhalation and exhalation valves tification and Quality Assurance shall be provided where necessary and Branch, 1095 Willowdale Road, Morgan- protected against damage and distor- town, WV 26505–2888, or at the National tion. Archives and Records Administration (b) Exhalation valves shall be— (NARA). For information on the avail- (1) Protected against external influ- ability of this material at NARA, call ence; and 202–741–6030, or go to: http:// (2) Designed and constructed to pre- www.archives.gov/federallregister/ vent inward leakage of contaminated codeloflfederallregulations/ air. ibrllocations.html. (d) Compressed, liquefied breathing § 84.78 Head harnesses; minimum re- air shall meet the applicable minimum quirements. grade requirements for Type II liquid (a) Facepieces shall be equipped with air set forth in the Compressed Gas As- adjustable and replaceable head har- sociation Commodity Specification for nesses designed and constructed to pro- Air, G–7.1, 1966 (Grade B or higher qual- vide adequate tension during suspen- ity). G–7.1 is incorporated by reference sion and an even distribution of pres- and has been approved by the Director sure over the entire area in contact of the Federal Register in accordance with the face. with 5 U.S.C. 552(a) and 1 CFR part 51. (b) Mouthpieces shall be equipped, Copies may be obtained from American where applicable, with adjustable and National Standards Institute, Inc., 1430 replaceable harnesses designed and Broadway, New York, NY 10018. Copies constructed to hold the mouthpiece in may be inspected at the NIOSH, Cer- place. tification and Quality Assurance Branch, 1095 Willowdale Road, Morgan- § 84.79 Breathing gas; minimum re- town, WV 26505–2888, or at the National quirements. Archives and Records Administration (a) Breathing gas used to supply ap- (NARA). For information on the avail- paratus shall be respirable and contain ability of this material at NARA, call no less than 19.5 (dry atmosphere) vol- 202–741–6030, or go to: http:// ume percent of oxygen. www.archives.gov/federallregister/

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codeloflfederallregulations/ § 84.82 Gas pressure gages; minimum ibrllocations.html. requirements. (a) Gas pressure gages employed on § 84.80 Interchangeability of oxygen and air prohibited. compressed breathing gas containers shall be calibrated in pounds per Approvals shall not be issued by the inch. Institute for any apparatus, combina- (b) Liquid-level gages shall be cali- tion of respirator assemblies, or any brated in fractions of total container apparatus or respirator component capacity, or in units of liquid volume. which is designed or constructed to (c) Gas pressure gages other than permit the interchangeable use of oxy- those specified in paragraphs (a) and gen and air. (b) of this section shall be calibrated § 84.81 Compressed breathing gas and in: liquefied breathing gas containers; (1) Pounds per square inch; or minimum requirements. (2) In fractions of total container ca- (a) Compressed breathing gas and liq- pacity; or uefied breathing gas containers shall (3) Both in pounds per square inch meet the minimum requirements of the and fractions of total container capac- Department of Transportation for ity. interstate shipment of such containers (d)(1) Dial-indicating gages shall be when fully charged. reliable to within ±5 percent of full (b) Such containers shall be perma- scale when tested both up and down the nently and legibly marked to identify scale at each of 5 equal intervals. their contents, e.g., compressed breath- (2) The full-scale graduation of dial- ing air, compressed breathing oxygen, indicating gages shall not exceed 150 liquefied breathing air, or liquefied percent of the maximum rated cylinder breathing oxygen. pressures specified for the container in (c) Containers normally removed applicable Department of Transpor- from apparatus for refilling shall be tation specifications or permits. equipped with a dial indicating gage (e)(1) Stem-type gages shall be read- which shows the pressure in the con- able by sight and by touch and shall tainer. have a stem travel distance of not less (d) Compressed breathing gas con- than one-fourth inch between each tained valves or a separate charging graduation. system or adapter provided with each (2) A minimum of five graduations apparatus shall be equipped with outlet shall be engraved on the stem of each threads specified for the service by the gage and these graduations shall in- American Standards Association, Com- clude readings for empty, one-quarter, pressed Gas Cylinder Valve Outlet and one-half, three-quarters, and full. Inlet Connections, B57.1–1965. B57.1–1965 (3) Stem gage readings shall not vary is incorporated by reference and has from true readings by more than one- been approved by the Director of the sixteenth inch per inch of stem travel. Federal Register in accordance with 5 (f) The loss of gas through a broken U.S.C. 552(a) and 1 CFR part 51. Copies gage or severed gage connection shall may be obtained from American Na- not exceed 70 liters per minute when tional Standards Institute, Inc., 1430 the cylinder pressure is 6,900 kN/m.2 Broadway, New York, NY Copies may (1,000 pounds per square inch gage) or be inspected at the NIOSH, Certifi- when the liquid level is at one-half. cation and Quality Assurance Branch, (g) Where gages are connected to the 1095 Willowdale Road, Morgantown, WV apparatus through a gage line, the gage 26505–2888, or at the National Archives and line shall be capable of being iso- and Records Administration (NARA). lated from the apparatus except where For information on the availability of the failure of the gage or line would this material at NARA, call 202–741– not impair the performance or service 6030, or go to: http://www.archives.gov/ life of the apparatus. federallregister/ (h) Oxygen pressure gages shall have codeloflfederallregulations/ the words ‘‘Oxygen’’ and ‘‘Use No Oil’’ ibrllocations.html. marked prominently on the gage.

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(i)(1) Apparatus using compressed during normal usage to insure against breathing gas, except apparatus classi- a sudden release of the full pressure of fied for escape only, shall be equipped the container when the valve is opened. with gages visible to the wearer which (b) Valves shall be designed or posi- indicate the remaining gas content in tioned to prevent accidental opening the container. and closing, and damage from external (2) Apparatus using liquefied breath- forces. ing gas, except apparatus classified for (c) Valves operated during use of the escape only, shall be equipped with apparatus shall be installed in loca- gages visible to the wearer which indi- tions where they can be readily ad- cate the remaining liquid content in justed by the wearer. the container; however, where the liq- uid content cannot be rapidly vented, (d) Main-line valves, designed and and the service time of the device be- constructed to conserve gas in the gins immediately after filling, a timer event of a regulator or demand valve shall be provided in place of a visible failure, shall be provided in addition to gage. gas container valves, except when such failure will not affect performance. § 84.83 Timers; elapsed time indica- (e) Hand-operated bypass systems de- tors; remaining service life indica- signed and constructed to permit the tors; minimum requirements. wearer to breathe and to conserve his (a) Elapsed time indicators shall be gas supply in the event of a regulator provided for apparatus with a chemical or demand valve failure, shall be pro- oxygen source, except: vided where necessary. (1) Apparatus used for escape only; or (f) Valves installed on apparatus (2) Liquefied breathing gas apparatus shall be clearly distinguishable from equipped with gages visible to the one another by sight and touch. wearer which indicate the remaining (g) The bypass system valve control liquid content in the container. shall be colored . (b) The timer or other indicator shall be accurately calibrated in minutes of (h) A main-line or bypass valve or remaining service life. system will not be required on appa- (c) Timers shall be readable by sight ratus for escape only. and by touch during use by the wearer. (i) Safety relief valves or systems, (d) Timers shall be equipped with designed and constructed to release ex- automatically preset alarms which will cess pressure in the breathing circuit, warn the wearer for a period of 7 sec- shall be provided on closed-circuit ap- onds or more after the preset time has paratus, and shall meet the following elapsed. requirements: (e) Remaining service-life indicators (1) The relief valve or system shall or warning devices shall be provided in operate automatically when the pres- addition to a pressure gage on com- sure in the breathing circuit on the in- pressed gas self-contained breathing halation side of the breathing bag apparatus, except apparatus used for reaches 13 mm. (one-half inch) water- escape only, and shall operate auto- column height of pressure above the matically without preadjustment by minimum pressure required to fill the the wearer. breathing bag, within the breathing re- (f) Each remaining service-life indi- sistance requirements for the appa- cator or warning device shall give an ratus. alarm when the remaining service life (2) The relief valve or system shall be of the apparatus is reduced within a range of 20 to 25 percent of its rated designed to prevent external service time. atmospheres from entering the breath- ing circuit. § 84.84 Hand-operated valves; min- (3) The relief valve or system shall be imum requirements. designed to permit manual overriding (a) Hand-operated valves shall be de- for test purposes and in the event of a signed and constructed to prevent re- failure in the valve or system. moval of the stem from the valve body

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§ 84.85 Breathing bags; minimum re- where the weight decreases by more quirements. than 25 percent of its initial charge (a) Breathing bags shall have suffi- weight during its rated service life, the cient volume to prevent gas waste dur- maximum allowable weight of a com- ing exhalation and to provide an ade- pletely assembled and fully charged ap- quate reserve for inhalation. paratus shall be 18 kg. (40 pounds). (b) Breathing bags shall be con- (b) Where an apparatus employs structed of materials which are flexible equipment which contributes materi- and resistant to gasoline vapors. ally to the wearer’s comfort, e.g., a (c) Breathing bags shall be installed cooling system, the completely assem- in a location which will protect them bled and fully charged apparatus shall from damage or collapse by external not weigh more than 18 kg. (40 pounds) forces, except on apparatus classified regardless of the decrease in weight for escape only. during use.

§ 84.86 Component parts exposed to § 84.90 Breathing resistance test; inha- oxygen pressures; minimum re- lation. quirements. Each applicant shall certify that the (a) Resistance to inhalation airflow materials employed in the construc- will be measured in the facepiece or tion of component parts exposed to ox- mouthpiece while the apparatus is op- ygen pressures above atmospheric pres- erated by a breathing machine as de- sure are safe and compatible for their scribed in § 84.88. intended use. (b) The inhalation resistance of open- circuit apparatus shall not exceed 32 § 84.87 Compressed gas filters; min- mm. (1.25 inch) water-column height imum requirements. (at a flow rate of 120 liters per minute). All self-contained breathing appa- (c) The inhalation resistance of ratus using compressed gas shall have closed-circuit apparatus shall not ex- a filter downstream of the gas source ceed the difference between exhalation to effectively remove particles from resistance (§ 84.91(e)) and 10 cm. (4 the gas stream. inches) water-column height.

§ 84.88 Breathing bag test. § 84.91 Breathing resistance test; exha- (a) Breathing bags will be tested in lation. an air atmosphere saturated with gaso- (a) Resistance to exhalation airflow line vapor at room temperature (24–30 will be measured in the facepiece or °C./75–85 °F.) for a continuous period of mouthpiece of open-circuit apparatus twice the rated time of the apparatus with air flowing at a continuous rate of (except for apparatus for escape only 85 liters per minute. where the test period shall be the rated (b) The exhalation resistance of de- time of the apparatus). mand apparatus shall not exceed 25 (b) The bag will be operated during mm. (1 inch) water-column height. this test by a breathing machine with 24 respirations per minute and a (c) The exhalation resistance of pres- minute-volume of 40 liters. sure-demand apparatus shall not ex- (c) A breathing machine cam with a ceed the static pressure in the face- work rate of 622 kp.-m./min. will be piece by more than 51 mm. (2 inches) used. The dimensions of a suitable water-column height. breathing machine cam are available (d) The static pressure (at zero flow) from the Institute upon request. in the facepiece shall not exceed 38 (d) The air within the bag(s) shall not mm. (1.5 inches) water-column height. contain more than 100 parts per million (e) Resistance to exhalation airflow of gasoline vapor at the end of the test. will be measured in the facepiece or mouthpiece of closed-circuit apparatus § 84.89 Weight requirement. with a breathing machine as described (a) The completely assembled and in § 84.88, and the exhalation resistance fully charged apparatus shall not weigh shall not exceed 51 mm. (2 inches) more than 16 kg. (35 pounds); however, water-column height.

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§ 84.92 Exhalation valve leakage test. § 84.96 Service time test; closed-circuit apparatus. (a) Dry exhalation valves and valve seats will be subjected to a suction of (a) The closed-circuit apparatus will 25 mm. (1 inch) water-column height be classified according to the length of while in a normal operating position. time it supplies adequate breathing gas (b) Leakage between the valve and to the wearer during man test No. 4 de- the valve seat shall not exceed 30 milli- scribed in Table 4 of this subpart. liters per minute. (b) The service time obtained on man test No. 4 will be used to classify the § 84.93 Gas flow test; open-circuit ap- closed-circuit apparatus in accordance paratus. with § 84.53. (a) A static-flow test will be per- § 84.97 Test for carbon dioxide in in- formed on all open-circuit apparatus. spired gas; open- and closed-circuit (b) The flow from the apparatus shall apparatus; maximum allowable lim- be greater than 200 liters per minute its. when the pressure in the facepiece of (a) Open-circuit apparatus. (1) The demand-apparatus is lowered by 51 mm. concentration of carbon dioxide in in- (2 inches) water-column height when spired gas in open-circuit apparatus full container pressure is applied. will be measured at the mouth while (c) Where pressure demand apparatus the apparatus mounted on a dummy are tested, the flow will be measured at head is operated by a breathing ma- zero gage pressure in the facepiece. chine. An acceptable method for meas- (d) Where apparatus with com- uring the concentration of carbon diox- pressed-breathing-gas containers are ide is described in Bureau of Mines Re- tested, the flow test shall also be made port of Investigations 6865, A Machine- with 3,450 kN/m.2 (500 p.s.i.g.) container Test Method for Measuring Carbon Di- pressure applied. oxide in the Inspired Air of Self-Con- tained Breathing Apparatus, 1966. Cop- § 84.94 Gas flow test; closed-circuit ap- ies of Report of Investigations 6865 may paratus. be inspected or obtained from the (a) Where oxygen is supplied by a NIOSH, Certification and Quality As- constant-flow device only, the rate of surance Branch, 1095 Willowdale Road, flow shall be at least 3 liters per Morgantown, WV. 26505–2888. minute for the entire rated service (2) The breathing rate will be 14.5 res- time of the apparatus. pirations per minute with a minute- (b) Where constant flow is used in volume of 10.5 liters. conjunction with demand flow, the con- (3) A sedentary breathing machine stant flow shall be greater than 1.5 li- cam will be used. ters per minute for the entire rated (4) The apparatus will be tested at a service time. temperature of 27 ±2 °C. (80 ±5 °F.). (c) All demand-flow devices shall pro- (5) A concentration of 5 percent car- vide at least 30 liters of oxygen per bon dioxide in air will be exhaled into minute when in the fully open position. the facepiece. (b) Closed-circuit apparatus. The con- § 84.95 Service time test; open-circuit centration of carbon dioxide in inspired apparatus. gas in closed-circuit apparatus will be (a) Service time will be measured measured at the mouth while the parts with a breathing machine as described of the apparatus contributing to dead- in § 84.88. air space are mounted on a dummy (b) The open-circuit apparatus will be head and operated by the breathing classified according to the length of machine as in paragraphs (a) (1) time it supplies air or oxygen to the through (5) of this section. breathing machine. (c) During the testing required by (c) The service time obtained on this paragraphs (a) and (b) of this section, test will be used to classify the open- the concentration of carbon dioxide in circuit apparatus in accordance with inspired gas at the mouth will be con- § 84.53. tinuously recorded, and the maximum

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average concentration during the inha- (3) The wearer shall not experience lation portion of the breathing cycle undue discomfort because of airflow re- shall not exceed the following limits: striction or other physical or chemical changes in the operation of the appa- Maximum allowable av- erage concentration of ratus. Where the service time is carbon dioxide in in- (f) Auxiliary low-temperature parts spired air percent by vol- ume which are commercially available to the user may be used on the apparatus Not more than 30 minutes ...... 2.5 to meet the requirements described in 1 hour ...... 2.0 paragraph (e) of this section. 2 hours ...... 1.5 3 hours ...... 1.0 4 hours ...... 1.0 § 84.99 Man tests; testing conditions; general requirements. (d) In addition to the test require- (a) The man tests described in Tables ments for closed-circuit apparatus set 1, 2, 3, and 4 of this subpart represent forth in paragraph (b) of this section, the workload performed in the mining, gas samples will be taken during the mineral, or allied industries by a per- course of the man tests described in son wearing the apparatus tested. Tables 1, 2, 3, and 4 of this subpart. (b) The apparatus tested will be worn These gas samples will be taken from by Institute personnel trained in the the closed-circuit apparatus at a point use of self-contained breathing appa- downstream of the carbon dioxide sor- ratus, and the wearer will, before par- bent, and they shall not contain more ticipating in these tests, pass a phys- than 0.5 percent carbon dioxide at any ical examination conducted by a quali- time, except on apparatus for escape fied physician. only, using a mouthpiece only, the (c) All man tests will be conducted by sample shall not contain more than 1.5 the Institute. percent carbon dioxide at any time. (d) The apparatus will be examined before each man test to ensure that it § 84.98 Tests during low temperature is in proper working order. operation. (e) Breathing resistance will be meas- (a) The applicant shall specify the ured within the facepiece or mouth- minimum temperature for safe oper- piece and the wearer’s pulse and res- ation and two persons will perform the piration rate will be recorded during tests described in paragraphs (c) and each 2 minute sample period prescribed (d) of this section, wearing the appa- in tests 1, 2, 3, and 4. ratus according to applicant’s direc- (f) Man tests 1, 2, 3, 4, 5, and 6 will be tions. At the specified temperature, the conducted in duplicate. apparatus shall meet all the require- (g) If man tests are not completed ments described in paragraph (e) of this through no fault of the apparatus, the section. test will be repeated. (b) The apparatus will be precooled at the specified minimum temperature for § 84.100 Man tests 1, 2, 3, and 4; re- 4 hours. quirements. (c) The apparatus will be worn in the Man tests 1, 2, 3, and 4, set forth in low temperature chamber for 30 min- Tables 1, 2, 3, and 4 of this subpart, re- utes, or for the service time of the ap- spectively, prescribe the duration and paratus, whichever is less. sequence of specific activities. These (d) During the test period, alternate tests will be conducted to— 1-minute periods of exercise and rest (a) Familiarize the wearer with the will be required with the exercise peri- apparatus during use; ods consisting of stepping onto and off (b) Provide for a gradual increase in a box 21.5 cm. (81⁄2 inches) high at a activity; rate of 30 cycles per minute. (c) Evaluate the apparatus under dif- (e)(1) The apparatus shall function ferent types of work and physical ori- satisfactorily at the specified min- entation; and imum temperature on duplicate tests. (d) Provide information on the oper- (2) The wearer shall have sufficient ating and breathing characteristics of unobscured vision to perform the work. the apparatus during actual use.

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§ 84.101 Man test 5; requirements. (c) The wearer will lie face downward (a) Test 5 will be conducted to deter- for one-fourth the service life of the ap- mine the maximum length of time the paratus with a full charge of liquefied apparatus will supply the respiratory breathing gas, and then a one-quarter needs of the wearer while he is sitting full charge of liquefied breathing gas. at rest. (d) The test will be repeated with the (b) The wearer will manipulate the wearer lying on each side and on his devices controlling the supply of back. breathing gas to the advantage of the (e) The oxygen content of the gas apparatus. supplied to the wearer by the appa- (c) Samples of inspiration from with- ratus will be continuously measured. in the apparatus facepiece or mouth- piece shall be taken once every 15 min- § 84.103 Man tests; performance re- utes, and shall meet the minimum re- quirements. quirement for oxygen specified in (a) The apparatus shall satisfy the § 84.79(a), and the maximum allowable respiratory requirements of the wearer average concentration of carbon diox- for the classified service time. ide specified in § 84.97(c). (d) One sample of inspiration will be (b) Fogging of the eyepiece shall not taken in the case of 3-, 5-, and 10- obscure the wearer’s vision, and the minute apparatus. wearer shall not experience undue dis- comfort because of fit or other charac- § 84.102 Man test 6; requirements. teristics of the apparatus. (a) Man test 6 will be conducted with (c) When the ambient temperature respect to liquefied breathing gas appa- during testing is 24 ±6 °C. (75 ±10 °F.), ratus only. the maximum temperature of inspired (b) This test will be conducted to air recorded during man tests shall not evaluate operation of the apparatus in exceed the following, after correction other than vertical positions. for deviation from 24 °C. (75 °F.):

Where percent Maximum permissible relative humid- temperature of inspired air Where service life of apparatus is— ity of inspired shall not exceed— air is— °F. °C.

1⁄4 hour or less ...... 0–100 135 57 1⁄4 hour to 3⁄4 hour ...... 0–50 125 52 50–100 1 110 1 43 1 to 2 hours ...... 0–50 115 46 50–100 1105 141 3 hours ...... 0–50 110 43 50–100 1100 1 38 4 hours ...... 0–50 105 41 50–100 1 95 1 35 1 Where percent relative humidity is 50–100 and apparatus is designed for escape only, these maximum permissible tempera- tures will be increased by 5 °C (10 °F).

§ 84.104 Gas tightness test; minimum (b) Six persons will each wear the ap- requirements. paratus in the test concentrations (a) Each apparatus will be tested for specified in paragraph (a) of this sec- tightness by persons wearing it in an tion for 2 minutes and none shall de- atmosphere of 1,000 p.p.m. isoamyl ace- tect the odor or taste of the test vapor. tate.

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TABLES TO SUBPART H OF PART 84

TABLE 1—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 1, IN MINUTES [42 CFR part 84, subpart H]

Service time— Activity 3 min- 5 min- 10 min- 15 min- 30 min- 45 min- utes utes utes utes utes utes 1 hour 2, 3, and 4 hours

Sampling and readings ...... 2 2 2 2 Perform 1 hour test 2, 3, or 4 times respec- tively. Walks at 4.8 km. (3 miles) 3 5 3 4 8 12 18 per hour. Sampling and readings...... 2 2 2 2 2 Walks at 4.8 km. (3 miles) ...... 3 5 8 12 18 per hour. Sampling and readings...... 2 2 2 2 2 Walks at 4.8 km. (3 miles) ...... 6 13 16 per hour. Sampling and readings ...... 2 2 2

TABLE 2—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 2, IN MINUTES [42 CFR part 84, subpart H]

Service time— Activity 3 min- 5 min- 10 min- 15 min- 30 min- 45 min- 1 hour 2, 3 and utes utes utes utes utes utes 4 hours 1

Sampling and readings...... 2 2 2 2 2 Walks at 4.8 km. (3 miles) per hour ...... 1 1 3 4 6 10. Carries 23 kg. (50 pound) weight over overcast ...... 1 time in 1 time in 2 times in 3 times in 4 times in 5 times in 2 minutes 2 minutes 4 minutes 6 minutes 8 minutes 10 minutes. Walks at 4.8 km. (3 miles) per hour ...... 1 3 3 3 5. Climbs vertical treadmill 2 (or equivalent) ...... 1 1 1 1 1 1 1 1. Walks at 4.8 km. (3 miles) per hour ...... 1 1 ...... 2 3 5 Climbs vertical treadmill (or equiv- alent) ...... 1 ...... 1 1 1. Sampling and readings ...... 2 2 2 2. Walks at 4.8 km. (3 miles) per hour ...... 2 2 3 5 11. Climbs vertical treadmill (or equiv- alent) ...... 1 1 1 1 1. Carries 23 kg. (50 pound) weight over overcast ...... 1 time in 3 times in 4 times in 5 times in 5 times in 2 minutes 6 minutes 8 minutes 10 10 minutes minutes. Sampling and readings ...... 2 ...... 2 2 2. Walks at 4.8 km. (3 miles) per hour ...... 1 3 3 3 ...... Climbs vertical treadmill (or equiv- alent) ...... 1 1 1 1 1 Then repeat above activities once. Walks at 4.8 km. (3 miles) per hour ...... 2 ...... 2 3 Climbs vertical treadmill (or equiv- alent) ...... 1 1 ...... Carries 20 kg. (45 pound) weight and walks at 4.8 km. (3 miles) per hour...... 1 ...... 2 ...... Walks at 4.8 km. (3 miles) per hour ...... 1 2 ...... 1 4 ......

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TABLE 2—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 2, IN MINUTES—Continued [42 CFR part 84, subpart H]

Service time— Activity 3 min- 5 min- 10 min- 15 min- 30 min- 45 min- 1 hour 2, 3 and utes utes utes utes utes utes 4 hours 1

Sampling and readings ...... 2 2 2 2 ...... 1 Total test time for Test 2 for 2-hour, 3-hour, and 4-hour apparatus is 2 hours. 2 Treadmill shall be inclined 15° from vertical and operated at a speed of 1 foot per second.

TABLE 3—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 3, IN MINUTES [42 CFR part 84, subpart H]

Service time—

Activity 3 min- 5 min- 10 min- 15 min- 30 min- 45 min- 2, 3 and utes utes utes utes utes utes 1 hour 4 hours 1

Sampling and readings ...... 2 2 2 2 (2) Walks at 4.8 km. (3 miles) per hour ...... 1 1 2 2 3 ...... Runs at 9.7 km. (6 miles) per hour ...... 1 1 1 1 1 1 1 ...... Pulls 20 kg. (45 pound) weight to 5 feet ...... 15 times ...... 30 times 30 times 30 times 60 times ...... in 1 in 2 in 2 in 2 in 6 minute minutes minutes minutes minutes Lies on side...... 1/2 1 1 2 3 4 5 ...... Lies on back...... 1/2 1 1 2 2 3 3 ...... Crawls on hands and knees ...... 1 1 1 2 2 2 2 ...... Sampling and readings ...... 2 ...... 2 2 2 ...... Runs at 9.7 km. (6 miles) per hour ...... 1 1 1 1 ...... Walks at 4.8 km. (3 miles) per hour ...... 2 8 10 ...... Pulls 20 kg. (45 pound) weight to 5 feet ...... 30 times ...... 60 times 60 times 60 times ...... in 2 in 6 in 6 in 6 minutes minutes minutes minutes Sampling and readings ...... 2 ...... 2 2 ...... Walks at 4.8 km. (3 miles) per hour ...... 1 ...... 3 4 10 ...... Lies on side ...... 2 4 ...... Lies on back ...... 2 1 ...... Sampling and readings ...... 2 2 2 ...... 1 Total test time for Test 3 for 2-hour, 3-hour, and 4-hour apparatus is 2 hours. 2 Perform test No. 3 for 1 hr. apparatus; then perform test No. 1 for 1 hour apparatus.

TABLE 4—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 4, IN MINUTES [42 CFR part 84, subpart H]

Service time— Activity 3 min- 5 min- 10 min- 15 min- 30 min- 45 min- utes utes utes utes utes utes 1 hour 2 hours 3 hours 4 hours

Sampling and readings ...... 2 2 2 2 (2) (3) (4) Walks at 4.8 km. (3 miles) per hour ...... 1 2 2 2 ...... Climbs vertical treadmill 1 (or equivalent) ..... 1 1 1 1 1 1 1 ...... Walks at 4.8 km. (3 miles) per hour ...... 1 1 1 2 2 2 ...... Pulls 20 kg. (45 pound) weight to 5 feet ...... 30 times 30 times 30 times 60 times 60 times 60 times ...... in 2 in 2 in 2 in 5 in 5 in 5 minutes minutes minutes minutes minutes minutes Walks at 4.8 km. (3 miles) per hour ...... 1 1 1 2 3 ......

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TABLE 4—DURATION AND SEQUENCE OF SPECIFIC ACTIVITIES FOR TEST 4, IN MINUTES—Continued [42 CFR part 84, subpart H]

Service time— Activity 3 min- 5 min- 10 min- 15 min- 30 min- 45 min- utes utes utes utes utes utes 1 hour 2 hours 3 hours 4 hours

Carries 23 kg. (50 pound) weight over overcast ...... 1 time in 1 time in 2 times 4 times ...... 1 minute 1 minute in 3 in 8 minutes minutes Sampling and readings ...... 2 ...... 2 2 2 ...... Walks at 4.8 km. (3 miles) per hour ...... 1 3 3 4 ...... Runs at 9.7 km. (6 miles) per hour ...... 1 1 1 1 1 1 ...... Carries 23 kg. (50 pound) weight over overcast ...... 1 time in 1 time in 2 times 4 times 6 times ...... 1 minute 1 minute in 3 in 6 in 9 minutes minutes minutes Pulls 20 kg (45 pound) weight to 5 feet ...... 15 times ...... 15 times 60 times 30 times 36 times ...... in 1 in 1 in 5 in 2 in 3 minute minute minutes minutes minutes Sampling and readings ...... 2 2 2 2 ...... Walks at 4.8 km. (3 miles) per hour ...... 1 ...... 1 ...... 2 6 ...... Pulls 20 kg. (45 pound) weight to 5 feet ...... 60 times 60 times ...... in 5 in 5 minutes minutes Carries 20 kg. (45 pound) weight and walks at 4.8 km. (3 miles) per hour ...... 3 3 ...... Sampling and readings ...... 2 2 ...... 1 Treadmill shall be inclined 15° from vertical and operated at a speed of 30 cm. (1 foot) per second. 2 Perform test No. 1 for 30-minute apparatus; then perform test No. 4 for 1-hour apparatus; then perform test No. 1 for 30- minute apparatus. 3 Perform test No. 1 for 1-hour apparatus; then perform test No. 4 for 1-hour apparatus; then perform test No. 1 for 1-hour ap- paratus. 4 Perform test No. 1 for 1-hour apparatus; then perform test No. 4 for 1-hour apparatus; then perform test No. 1 for 1-hour ap- paratus twice (i.e., two one-hour tests).

Subpart I—Gas Masks gen to support life are described as fol- lows: § 84.110 Gas masks; description. (1) Front-mounted or back-mounted gas A gas mask which consists of a (a) Gas masks including all com- mask. full facepiece, a breathing tube, a can- pletely assembled air purifying masks ister at the front or back, a canister designed for use as respiratory protec- harness, and associated connections. tion during entry into atmospheres not (2) Chin-style gas mask. A gas mask immediately dangerous to life or which consists of a full facepiece, a health or escape only from hazardous canister which is usually attached to atmospheres containing adequate oxy- the facepiece, and associated connec- tions.

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(3) Escape gas mask. A gas mask de- cepted, the Institute will test such signed for use during escape only from masks in accordance with the require- hazardous atmospheres which consists ments of this subpart. of a facepiece or mouthpiece, a can- ister, and associated connections. § 84.111 Gas masks; required compo- (b) Gas masks shall be further de- nents. scribed according to the types of gases (a) Each gas mask described in or vapors against which they are de- § 84.110 shall, where its design requires, signed to provide respiratory protec- contain the following component parts: tion, as follows: (1) Facepiece or mouthpiece and Type of front-mounted or back-mounted gas mask: noseclip; Acid gas 1,2,3 (2) Canister or cartridge; Ammonia (3) Canister harness; Carbon monoxide (4) External check valve; and Organic Vapor 1,2,3 Other gas(es) and vapor(s) 1,2,3 (5) Breathing tube. Combination of two or more of the above gases (b) The components of each gas mask and vapors. 1,2,3 shall meet the minimum construction Combination of acid gas, ammonia, carbon mon- requirements set forth in subpart G of 1,2,3 oxide, and organic vapors. this part. Type of chin-style gas mask: Acid gas 1,2,3 Ammonia § 84.112 Canisters and cartridges in Carbon monoxide parallel; resistance requirements. Organic vapor 1,2,3 Where two or more canisters or car- 1,2,3 Other gas(es) and vapor tridges are used in parallel, their re- Combination of two or more of the above gases and vapors. 1,2,3 sistance to airflow shall be essentially Type of escape gas mask: equal. Acid gas 1,2,3,4 Ammonia 4 § 84.113 Canisters and cartridges; Carbon monoxide color and markings; requirements. Organic vapor 1,2,3,4 Other gas(s) and vapor(s) 1,2,3,4 The color and markings of all can- Combination of two or more of the above gases isters and cartridges or labels shall and vapors. 1,2,3,4 conform with the requirements of the 1 Approval may be for acid gases or organic vapors as a American National Standards Insti- class or for specific acid gases or organic vapors. tute, American National Standard for 2 Not for use against gases or vapors with poor warning properties (except where MSHA or Occupational Safety and Identification of Air-Purifying Res- Health Administration standards permit such use for a spe- cific gas or vapor), or those which generate high heats or re- pirator Canisters and Cartridges, ANSI action with sorbent materials in the canister. K13.1–1973. ANSI K13.1 is incorporated 3 Use of the gas mask may be limited by factors such as lower explosive limit, toxicological effects, and facepiece fit. by reference and has been approved by Limitations on gas mask service life and sorbent capacity the Director of the Federal Register in limitations shall be specified by the applicant in instructions for selection, use and maintenance of the gas mask. accordance with 5 U.S.C. 552(a) and 1 4 Eye protection may be required in certain concentrations CFR part 51. Copies may be obtained of gases and vapors. from American National Standards In- (c) Gas masks for respiratory protec- stitute, Inc., 1430 Broadway, New York, tion against gases and vapors other NY 10018. Copies may be inspected at than those specified in paragraph (b) of the NIOSH, Certification and Quality this section, may be approved upon Assurance Branch, 1095 Willowdale submittal of an application in writing Road, Morgantown, WV 26505–2888, or for approval to the Certification and at the National Archives and Records Quality Assurance Branch listing the Administration (NARA). For informa- gas or vapor and suggested maximum use concentration for the specific type tion on the availability of this mate- of gas mask. The Institute will con- rial at NARA, call 202–741–6030, or go sider the application and accept or re- to: http://www.archives.gov/ ject it on the basis of effect on the federallregister/ wearer’s health and safety and any codeloflfederallregulations/ field experience in use of gas masks for ibrllocations.html. such exposures. If the application is ac-

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§ 84.114 Filters used with canisters § 84.118 Half-mask facepieces, full and cartridges; location; replace- facepieces, and mouthpieces; fit; ment. minimum requirements. (a) Particulate matter filters used in (a) Half-mask facepieces and full conjunction with a canister or car- facepieces shall be designed and con- tridge shall be located on the inlet side structed to fit persons with various fa- of the canister or cartridge. cial shapes and sizes either: (b) Filters shall be incorporated in or (1) By providing more than one face- firmly attached to the canister or car- piece size; or tridge and each filter assembly shall, (2) By providing one facepiece size where applicable, be designed to permit which will fit varying facial shapes and its easy removal from and replacement sizes. in the canister or cartridge. (b) Full facepieces shall provide for optional use of corrective spectacles or § 84.115 Breathing tubes; minimum re- lenses, which shall not reduce the res- quirements. piratory protective qualities of the gas Flexible breathing tubes used in con- mask. junction with gas masks shall be de- (c) Half-mask facepieces shall not signed and constructed to prevent: interfere with the fit of common indus- (a) Restriction of free head move- trial safety spectacles, as determined ment; by the Institute’s facepiece tests in (b) Disturbance of the fit of § 84.124. facepieces or mouthpieces; (d) Gas masks with mouthpieces shall (c) Interference with the wearer’s ac- be equipped with noseclips which are tivities; and securely attached to the mouthpiece or (d) Shutoff of airflow due to kinking, gas mask and provide an airtight seal. or from chin or arm pressure. (e) Facepieces shall be designed to prevent eyepiece fogging. § 84.116 Harnesses; installation and construction; minimum require- § 84.119 Facepieces; eyepieces; min- ments. imum requirements. (a) Each gas mask shall, where nec- (a) Full facepieces shall be designed essary, be equipped with a suitable har- and constructed to provide adequate vi- ness designed and constructed to hold sion which is not distorted by the eye. the components of the gas mask in po- (b) All eyepieces shall be designed sition against the wearer’s body. and constructed to be impact and pene- (b) Harnesses shall be designed and tration resistant. Federal Specifica- constructed to permit easy removal tion, Mask, Air Line: and Respirator, and replacement of gas mask parts, and Air Filtering, Industrial, GGG-M-125d, where applicable, provide for holding a October 11, 1965 with interim amend- full facepiece in the ready position ment-1, July 30, 1969, is an example of when not in use. an appropriate standard for deter- mining impact and penetration resist- § 84.117 Gas mask containers; min- ance. Copies of GGG-M-125d may be ob- imum requirements. tained from the NIOSH, Certification (a) Gas masks shall be equipped with and Quality Assurance Branch, 1095 a substantial, durable container bear- Willowdale Road, Morgantown, WV ing markings which show the appli- 26505–2888. cant’s name, the type and commercial designation of mask it contains and all § 84.120 Inhalation and exhalation appropriate approval labels. valves; minimum requirements. (b) Containers for gas masks shall be (a) Inhalation and exhalation valves designed and constructed to permit shall be provided where necessary and easy removal of the mask. protected against damage and distor- tion.

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(b) Inhalation valves shall be de- (b) Mouthpieces shall be equipped, signed and constructed to prevent ex- where applicable, with adjustable and cessive exhaled air from adversely af- replaceable harnesses designed and fecting cartridges, canisters, and fil- constructed to hold the mouthpiece in ters. place. (c) Exhalation valves shall be pro- tected against external influence, and § 84.122 Breathing resistance test; min- designed and constructed to prevent in- imum requirements. ward leakage of contaminated air. (a) Resistance to airflow will be measured in the facepiece or mouth- § 84.121 Head harnesses; minimum re- piece of a gas mask mounted on a quirements. breathing machine both before and (a) Facepieces shall be equipped with after each test conducted in accordance adjustable and replaceable head har- with §§ 84.124, 84.125, and 84.126, with air nesses, designed and constructed to flowing at a continuous rate of 85 liters provide adequate tension during use per minute. and an even distribution of pressure (b) The maximum allowable resist- over the entire area in contact with ance requirements for gas masks are as the face. follows:

MAXIMUM RESISTANCE [mm. water-column height]

Inhalation Type of gas mask Exhalation Initial Final 1

Front-mounted or back-mounted (without particulate filter) ...... 60 75 20 Front-mounted or back-mounted (with approved particulate filter) ...... 70 85 20 Chin-style (without particulate filter) ...... 40 55 20 Chin-style (with approved particulate filter) ...... 65 80 20 Escape (without particulate filter) ...... 60 75 20 Escape (with approved particulate filter) ...... 70 85 20 1 Measured at end of the service life specified in Tables 5, 6, and 7 of this subpart.

§ 84.123 Exhalation valve leakage test. turbing the facepiece or mouthpiece fit. (a) Dry exhalation valves and valve (d) The facepiece or mouthpiece fit seats will be subjected to a suction of test, using positive or negative pres- 25 mm. water-column height while in a sure recommended by the applicant normal operating position. and described in his instructions will (b) Leakage between the valve and be used before each test specified in valve seat shall not exceed 30 milli- paragraph (e) of this section, and in liters per minute. § 84.125. (e)(1) Each wearer will enter a cham- § 84.124 Facepiece tests; minimum re- ber containing 100 p.p.m. isoamyl ace- quirements. tate vapor for a half-mask facepiece (a) The complete gas mask will be and 1,000 p.p.m. isoamyl acetate vapor fitted to the faces of persons having for a full facepiece or mouthpiece. varying facial shapes and sizes. (2) The facepiece or mouthpiece may (b) Where the applicant specifies a be adjusted, if necessary, in the test facepiece size or sizes for the gas mask, chamber before starting the tests. together with the approximate meas- (3) Each wearer will remain in the urements of faces they are designed to chamber for 8 minutes while per- fit, the Institute will insure that test forming the following activities: subjects suit such facial measure- (i) Two minutes, nodding and turning ments. head; (c) Any gas mask parts which must (ii) Two minutes, calisthenic arm be removed to perform the facepiece or movements; mouthpiece fit test shall be replaceable (iii) Two minutes, running in place; without special tools and without dis- and

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(iv) Two minutes, pumping with a of this section, will be equilibrated at tire pump into a 28 liter (1 cubic foot) room temperature by passing 85 per- container. cent relative humidity air through (4) Each wearer shall not detect the them at 64 liters per minute for 6 odor of isoamyl acetate during the hours. test. (5) The equilibrated canisters will be resealed, kept in an upright position at § 84.125 Particulate tests; canisters room temperature, and tested within 18 containing particulate filters; min- hours. imum requirements. (b) Front-mounted and back-mounted Gas mask canisters containing filters gas mask canisters will be tested and for protection against particulates (e.g. shall meet the minimum requirements dusts, fumes, mists, and smokes) in set forth in Table 5 of this subpart. combination with gases, vapors, or (c)(1) Front-mounted, and back- gases and vapors, shall also comply mounted, and chin-style canisters des- with the requirements as prescribed in ignated as providing respiratory pro- §§ 84.170 through 84.183, except for the tection against gases, ammonia, or- airflow resistance test of § 84.181. ganic vapors, carbon monoxide and par- ticulate contaminants shall have a § 84.126 Canister bench tests; min- window or other indicator to warn the imum requirements. gas mask wearer when the canister will (a)(1) Bench tests, except for carbon no longer satisfactorily remove carbon monoxide tests, will be made on an ap- monoxide from the inhaled air. paratus that allows the test atmos- (2) Other types of front- and back- phere at 50 ±5 percent relative humid- mounted canisters may also be ity and room temperature (25 ±2.5 °C.) equipped with a window or other indi- to enter the canister continuously at cator to warn of imminent leakage of concentrations and rates of flow speci- other gases or vapors. fied in Tables 5, 6, and 7 of this subpart. (3) The window indicator canisters (2) Three canisters will be removed will be tested as regular canisters, but from containers and tested as received shall show a satisfactory indicator from the applicant. change or other warning before the al- (3) Two canisters, other than those lowable canister penetration has oc- described in paragraph (a)(2) of this curred. section, will be equilibrated at room (d) Chin-style gas mask canisters temperature by passing 25 percent rel- shall meet the minimum requirements ative humidity air through them at 64 set forth in Table 6 of this subpart. liters per minute for 6 hours. (e) Escape gas mask canisters shall (4) Two canisters, other than those meet the minimum requirements set described in paragraphs (a) (2) and (3) forth in Table 7 of this subpart.

TABLES TO SUBPART I OF PART 84

TABLE 5—CANISTER BENCH TESTS AND REQUIREMENTS FOR FRONT-MOUNTED AND BACK-MOUNTED GAS MASK CANISTERS [42 CFR part 84, subpart I]

Test atmosphere Maximum allowable Minimum Canister type Test condi- Concentra- Flow rate Number penetratin service tion Gas or vapor tion (parts (liters per of tests (parts per life (min- 1 per million) minute) million) utes)

Acid gas ...... As received SO2 20,000 64 3 5 12 Equilibrated Cl2 20,000 64 3 5 12 SO2 20,000 32 4 5 12 Cl2 20,000 32 4 5 12 Organic vapor ...... As received CCl4 20,000 64 3 5 12 Equilibrated CCl4 20,000 32 4 5 12 Ammonia ...... As received NH3 30,000 64 3 50 12 Equilibrated NH3 30,000 32 4 50 12 Carbon monoxide ...... As received CO 20,000 4 64 2 (3) 60

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TABLE 5—CANISTER BENCH TESTS AND REQUIREMENTS FOR FRONT-MOUNTED AND BACK-MOUNTED GAS MASK CANISTERS—Continued [42 CFR part 84, subpart I]

Test atmosphere Maximum allowable Minimum Canister type Test condi- Concentra- Flow rate Number penetratin service tion Gas or vapor tion (parts (liters per of tests (parts per life (min- 1 per million) minute) million) utes)

Equilibrated CO 5,000 2 32 3 (3) 60 CO 3,000 2 32 3 (3) 60 Combination of 2 or 3 of above types 5 Combination of all above types 6 1 Minimum life will be determined at the indicated penetration. 2 Relative humidity of test atmosphere will be 95 ±3pct; temperature of test atmosphere will be 25 ±2.5 °C. 3 Maximum allowable CO penetration will be 385 cm 3 during the minimum life. The penetration shall not exceed 500 p/m dur- ing this time. 4 Relative humidity of test atmosphere will be 95 ±3pct; temperature of test atmosphere entering the test fixture will be 0 ±2.5 °C¥0 °C. 5 Test conditions and requirements will be applicable as shown in this table. 6 Test conditions and requirements will be applicable as shown in this table, except the minimum service lives for acid gas, or- ganic vapor, and ammonia will be 6 min instead of 12 min.

TABLE 6—CANISTER BENCH TESTS AND REQUIREMENTS FOR CHIN-STYLE GAS MASK CANISTERS [42 CFR part 84, subpart I]

Test atmosphere Maximum allowable Minimum Concentra- Flow rate Number penetra- service Canister type Test condition of tests tion (parts life (min- Gas or vapor tion (parts (liters per 1 per million) minute) per mil- utes) lion)

Acid gas ...... As received Equili- SO2 50,000 64 3 5 12 brated Cl2 5,000 64 3 5 12 SO2 5,000 32 4 5 12 Cl2 5,000 32 4 5 12 Organic vapor ...... As received Equili- CCl4 5,000 64 3 5 12 brated CCl4 5,000 32 4 5 12 Ammonia ...... As received Equili- NH3 5,000 64 3 50 12 brated As received Equili- NH3 5,000 32 4 50 12 brated Carbon monoxide ...... As received CO 20,000 2 64 2 (3) 60 CO 5,000 4 32 3 (3) 60 CO 3,000 2 32 3 (3) 60 Combination of 2 or 3 of above types 5 Combination of all above types 6 1 Minimum life will be determined at the indicated penetration. 2 Relative humidity of test atmosphere will be 95 ±3pct; temperature of test atmosphere will be 25 ±2.5 °C. 3 Maximum allowable CO penetration will be 385 cm 3 during the minimum life. The penetration shall not exceed 500 p/m dur- ing this time. 4 Relative humidity of test atmosphere will be 95 ±3pct; temperature of test atmosphere entering the test fixture will be 0 ±2.5 °C¥0 °C. 5 Test conditions and requirements will be applicable as shown in this table. 6 Test conditions and requirements will be applicable as shown in this table, except the minimum service lives for acid gas, or- ganic vapor, and ammonia will be 6 min instead of 12 min.

TABLE 7—CANISTER BENCH TESTS AND REQUIREMENTS FOR ESCAPE GAS MASK CANISTERS [42 CFR part 84, subpart I]

Test atmosphere Maximum allowable Minimum Number penetra- service Canister type Test condition Concentra- Flow rate of tests tion (parts life (min- Gas or vapor tion (parts (liters per per mil- utes) 1 per million) minute) lion)

Acid gas ...... As received ...... SO2 5,000 64 3 5 12 Equilibrated ...... Cl2 5,000 64 3 5 12 SO2 5,000 32 4 5 12 Cl2 5,000 32 4 5 12

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TABLE 7—CANISTER BENCH TESTS AND REQUIREMENTS FOR ESCAPE GAS MASK CANISTERS— Continued [42 CFR part 84, subpart I]

Test atmosphere Maximum allowable Minimum Number penetra- service Canister type Test condition Concentra- Flow rate of tests tion (parts life (min- Gas or vapor tion (parts (liters per per mil- utes) 1 per million) minute) lion)

Organic vapor ...... As received ...... CCl4 5,000 64 3 5 12 Equilibrated ...... CCl4 5,000 32 4 5 12 Ammonia ...... As received ...... NH3 5,000 64 3 50 12 Equilibrated ...... NH3 5,000 32 4 50 12 Carbon monoxide ...... As received ...... CO 10,000 2 32 2 (3) 4 60 CO 5,000 5 32 3 (3) 60 CO 3,000 2 32 3 (3) 60 1 Minimum life will be determined at the indicated penetration. 2 Relative humidity of test atmosphere will be 95 ±3 pct; temperature of test atmosphere will be 25 ±2.5 °C. 3 Maximum allowable CO penetration will be 385 cm 3 during the minimum life. The penetration shall not exceed 500 p/m dur- ing this time. 4 If effluent temperature exceeds 100 °C during this test, the escape gas mask shall be equipped with an effective heat ex- changer. 5 Relative humidity of test atmosphere will be 95 ±3 pct; temperature of test atmosphere entering the test fixture will be 0 ±2.5 °C¥0 °C.

Subpart J—Supplied-Air easy access to the external surface of Respirators such window(s) for cleaning. (c) Type ‘‘B’’ supplied-air respirators. A § 84.130 Supplied-air respirators; de- hose mask respirator, for entry into scription. and escape from atmospheres not im- mediately dangerous to life or health, Supplied-air respirators, including which consists of a strong large-diame- all completely assembled respirators ter hose with low resistance to airflow designed for use as respiratory protec- through which the user draws inspired tion during entry into and escape from air by means of his lungs alone, a har- atmospheres not immediately dan- ness to which the hose is attached, and gerous to life or health are described as a tight-fitting facepiece. follows: (d) Type ‘‘BE’’ supplied-air respirators. (a) Type ‘‘A’’ supplied-air respirators. A A type ‘‘B’’ supplied-air respirator hose mask respirator, for entry into equipped with additional devices de- and escape from atmospheres not im- signed to protect the wearer’s head and mediately dangerous to life or health, neck against impact and abrasion from which consists of a motor-driven or rebounding abrasive material, and with hand-operated blower that permits the shielding material such as plastic, free entrance of air when the blower is glass, woven wire, sheet metal, or not operating, a strong large-diameter other suitable material to protect the hose having a low resistance to airflow, window(s) of facepieces, hoods, and hel- a harness to which the hose and the mets which do not unduly interfere life-line are attached and a tight-fit- with the wearer’s vision and permit ting facepiece. easy access to the external surface of (b) Type ‘‘AE’’ supplied-air respirators. such window(s) for cleaning. A Type ‘‘A’’ supplied-air respirator (e) Type ‘‘C’’ supplied-air respirators. equipped with additional devices de- An airline respirator, for entry into signed to protect the wearer’s head and and escape from atmospheres not im- neck against impact and abrasion from mediately dangerous to life or health, rebounding abrasive material, and with which consists of a source of respirable shielding material such as plastic, breathing air, a hose, a detachable cou- glass, woven wire, sheet metal, or pling, a control valve, orifice, a de- other suitable material to protect the mand valve or pressure demand valve, window(s) of facepieces, hoods, and hel- an arrangement for attaching the hose mets which do not unduly interfere to the wearer, and a facepiece, hood, or with the wearer’s vision and permit helmet.

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(f) Type ‘‘CE’’ supplied-air respirators. respirator in position against the wear- A type ‘‘C’’ supplied-air respirator er’s body. equipped with additional devices de- (b) Harnesses shall be designed and signed to protect the wearer’s head and constructed to permit easy removal neck against impact and abrasion from and replacement of respirator parts, rebounding abrasive material, and with and where applicable, provide for hold- shielding material such as plastic, ing a full facepiece in the ready posi- glass, woven wire, sheet metal, or tion when not in use. other suitable material to protect the window(s) of facepieces, hoods, and hel- § 84.134 Respirator containers; min- mets which do not unduly interfere imum requirements. with the wearer’s vision and permit Supplied-air respirators shall be easy access to the external surface of equipped with a substantial, durable such window(s) for cleaning. container bearing markings which show the applicant’s name, the type § 84.131 Supplied-air respirators; re- and commercial designation of the res- quired components. pirator it contains, and all appropriate (a) Each supplied-air respirator de- approval labels. scribed in § 84.130 shall, where its de- sign requires, contain the following § 84.135 Half-mask facepieces, full component parts: facepieces, hoods, and helmets; fit; minimum requirements. (1) Facepiece, hood, or helmet; (2) Air supply valve, orifice, or de- (a) Half-mask facepieces and full mand or pressure-demand regulator; facepieces shall be designed and con- (3) Hand operated or motor driven air structed to fit persons with various fa- blower; cial shapes and sizes either: (4) Air supply hose; (1) By providing more than one face- (5) Detachable couplings; piece size; or (2) By providing one facepiece size (6) Flexible breathing tube; and which will fit varying facial shapes and (7) Respirator harness. sizes. (b) The component parts of each sup- (b) Full facepieces shall provide for plied-air respirator shall meet the min- optional use of corrective spectacles or imum construction requirements set lenses, which shall not reduce the res- forth in subpart G of this part. piratory protective qualities of the res- pirator. § 84.132 Breathing tubes; minimum re- quirements. (c) Hoods and helmets shall be de- signed and constructed to fit persons Flexible breathing tubes used in con- with various head sizes, provide for the junction with supplied-air respirators optional use of corrective spectacles or shall be designed and constructed to lenses, and insure against any restric- prevent: tion of movement by the wearer. (a) Restriction of free head move- (d) Facepieces, hoods, and helmets ment; shall be designed to prevent eyepiece (b) Disturbance of the fit of fogging. facepieces, mouthpieces, hoods, or hel- mets; § 84.136 Facepieces, hoods, and hel- (c) Interference with the wearer’s ac- mets; eyepieces; minimum require- tivities; and ments. (d) Shutoff of airflow due to kinking, (a) Facepieces, hoods, and helmets or from chin or arm pressure. shall be designed and constructed to provide adequate vision which is not § 84.133 Harnesses; installation and distorted by the eyepiece. construction; minimum require- (b) All eyepieces except those on ments. Types B, BE, C, and CE supplied-air (a) Each supplied-air respirator shall, respirators shall be designed and con- where necessary, be equipped with a structed to be impact and penetration suitable harness designed and con- resistant. Federal Specification, Mask, structed to hold the components of the Air Line: and Respirator, Air Filtering,

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Industrial, GGG-M-125d, October 11, § 84.140 Air velocity and noise levels; 1965 with interim amendment-1, July hoods and helmets; minimum re- 30, 1969, is an example of an appropriate quirements. standard for determining impact and Noise levels generated by the res- penetration resistance. Copies of GGG- pirator will be measured inside the M-125d may be obtained from the hood or helmet at maximum airflow NIOSH, Certification and Quality As- obtainable within pressure and hose surance Branch, 1095 Willowdale Road, length requirements and shall not ex- Morgantown, WV 26505–2888. ceed 80 dBA. (c)(1) The eyepieces of AE, BE, and CE type supplied-air respirators shall § 84.141 Breathing gas; minimum re- be shielded by plastic, glass, woven quirements. wire, sheet metal, or other suitable material which does not interfere with (a) Breathing gas used to supply sup- the vision of the wearer. plied-air respirators shall be respirable (2) Shields shall be mounted and at- breathing air and contain no less than tached to the facepiece to provide easy 19.5 volume-percent of oxygen. access to the external surface of the (b) Compressed, gaseous breathing air eyepiece for cleaning. shall meet the applicable minimum grade requirements for Type I gaseous § 84.137 Inhalation and exhalation air set forth in the Compressed Gas As- valves; check valves; minimum re- sociation Commodity Specification for quirements. Air, G–7.1, 1966 (Grade D or higher qual- (a) Inhalation and exhalation valves ity). G–7.1 is incorporated by reference shall be provided where necessary and and has been approved by the Director protected against distortion. of the Federal Register in accordance (b) Exhalation valves shall be: with 5 U.S.C. 552(a) and 1 CFR part 51. (1) Protected against damage and ex- Copies may be obtained from American ternal influence; and National Standards Institute, Inc., 1430 (2) Designed and constructed to pre- Broadway, New York, NY 10018. Copies vent inward leakage of contaminated may be inspected at the NIOSH, Cer- air. tification and Quality Assurance (c) Check valves designed and con- Branch, 1095 Willowdale Road, Morgan- structed to allow airflow toward the town, WV 26505–2888, or at the National facepiece only shall be provided in the Archives and Records Administration connections to the facepiece or in the (NARA). For information on the avail- hose fitting near the facepiece of all ability of this material at NARA, call Type A, AE, B, and BE supplied-air res- 202–741–6030, or go to: http:// pirators. www.archives.gov/federallregister/ codeloflfederallregulations/ § 84.138 Head harnesses; minimum re- ibrllocations.html. quirements. (c) Compressed, liquefied breathing Facepieces shall be equipped with ad- air shall meet the applicable minimum justable and replaceable head har- grade requirements for Type II liquid nesses which are designed and con- air set forth in the Compressed Gas As- structed to provide adequate tension sociation Commodity Specification for during use, and an even distribution of Air, G–7.1, 1966 (Grade B or higher qual- pressure over the entire area in contact ity). G–7.1 is incorporated by reference with the face. and has been approved by the Director of the Federal Register in accordance § 84.139 Head and neck protection; with 5 U.S.C. 552(a) and 1 CFR part 51. supplied-air respirators; minimum Copies may be obtained from American requirements. National Standards Institute, Inc., 1430 Type AE, BE, and CE supplied-air Broadway, New York, NY 10018. Copies respirators shall be designed and con- may be inspected at the NIOSH, Cer- structed to provide protection against tification and Quality Assurance impact and abrasion from rebounding Branch, 1095 Willowdale Road, Morgan- abrasive materials to the wearer’s head town, WV 26505–2888, or at the National and neck. Archives and Records Administration

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(NARA). For information on the avail- shall be connected to each blower or ability of this material at NARA, call manifold outlet designed for hose con- 202–741–6030, or go to: http:// nections. www.archives.gov/federallregister/ (b) The crank speed of the hand-oper- codeloflfederallregulations/ ated blower shall not exceed 50 revolu- ibrllocations.html. tions per minute in order to deliver the required 50 liters of air per minute to § 84.142 Air supply source; hand-oper- each facepiece. ated or motor driven air blowers; (c) The power required to deliver 50 Type A supplied-air respirators; minimum requirements. liters of air per minute to each wearer through the maximum length of hose (a) Blowers shall be designed and con- shall not exceed one-fiftieth horse- structed to deliver an adequate amount power, and the torque shall not exceed of air to the wearer with either direc- a force of 2.3 kg. (5 pounds) on a 20 cm. tion of rotation, unless constructed to (8-inch) crank, as defined in § 84.146. permit rotation in one direction only, (d) The blower shall operate through- and to permit the free entrance of air out the period without failure or indi- to the hose when the blower is not op- cation of excessive wear of bearings or erated. other working parts. (b) No multiple systems, whereby more than one user is supplied by one § 84.145 Motor-operated blower test; blower, will be approved, unless each minimum requirements. hose line is connected directly to a (a) Motor-operated blowers shall be manifold at the blower. tested by operating them at their spec- § 84.143 Terminal fittings or chambers; ified running speed 6 to 8 hours daily Type B supplied-air respirators; for a period of 100 hours when assem- minimum requirements. bled with the kind and maximum (a) Blowers or connections to air sup- length of hose for which the device is plies providing positive pressures shall to be approved and when connected to not be approved for use on Type B sup- each blower or manifold outlet de- plied-air respirators. signed for hose connections. (b) Terminal fittings or chambers (b) The connection between the employed in Type B supplied-air res- motor and the blower shall be so con- pirators, shall be: structed that the motor may be dis- (1) Installed in the inlet of the hose. engaged from the blower when the (2) Designed and constructed to pro- blower is operated by hand. vide for the drawing of air through cor- (c) The blower shall operate through- rosion resistant material arranged so out the period without failure or indi- as to be capable of removing material cation of excessive wear of bearings or larger than 0.149 mm. in diameter (149 other working parts. micrometers, 100-, U.S. Standard (d) Where a blower, which is ordi- sieve). narily motor driven, is operated by (3) Installed to provide a means for hand, the power required to deliver 50 fastening or anchoring the fitting or liters of air per minute to each wearer chamber in a fixed position in a zone of through the maximum length of hose respirable air. shall not exceed one-fiftieth horse- power, and the torque shall not exceed § 84.144 Hand-operated blower test; a force of 2.3 kg. (5 pounds) on a 20 cm. minimum requirements. (8-inch) crank, as defined in § 84.146. (a) Hand-operated blowers shall be (e) Where the respirator is assembled tested by attaching them to a mechan- with the facepiece and 15 m. (50 feet) of ical drive and operating them 6 to 8 the hose for which it is to be approved, hours daily for a period of 100 hours at and when connected to one outlet with a speed necessary to deliver 50 liters of all other outlets closed and operated at air per minute through each com- a speed not exceeding 50 revolutions of pletely assembled respirator. Each res- the crank per minute, the amount of pirator shall be equipped with the max- air delivered into the respiratory-inlet imum length of hose with which the de- covering shall not exceed 150 liters per vice is to be approved and the hose minute.

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§ 84.146 Method of measuring the convenient) from the first. These are power and torque required to oper- used to facilitate timing. To determine ate blowers. the torque or horsepower required to As shown in Figure 1 of this section, operate the blower, the drum is started the blower crank is replaced by a wood- in rotation manually at or slightly en drum, a (13 cm. (5 inches) in diame- above the speed at which the power ter is convenient). This drum is wound measurement is to be made. The blower with about 12 m. (40 feet) of No. 2 pic- is then permitted to assume constant ture cord, b. A weight, c, of sufficient speed, and then as the first mark on mass to rotate the blower at the de- the wire leaves the drum, a stopwatch sired speed is suspended from this wire is started. The watch is stopped when cord. A mark is made on the cord about the second mark leaves the drum. 3 to 4.5 m. (10 to 15 feet) from the From these data the foot-pounds per weight, c. Another mark is placed at a minute and the torque may be cal- measured distance (6–9 m./20–30 feet is culated.

FIGURE 1—APPARATUS FOR MEASURING POWER REQUIRED TO OPERATE BLOWER. (42 CFR PART 84, SUBPART J, § 84.146)

§ 84.147 Type B supplied-air res- § 84.148 Type C supplied-air res- pirator; minimum requirements. pirator, continuous flow class; min- No Type B supplied-air respirator imum requirements. shall be approved for use with a blower (a) Respirators tested under this sec- or with connection to an air supply de- tion shall be approved only when they vice at positive pressures.

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supply respirable air at the pressures § 84.150 Air-supply line tests; minimum and quantities required. requirements. (b) The pressure at the inlet of the Air supply lines employed on Type A, hose connection shall not exceed 863 Type B, and Type C supplied-air res- 2 kN/m. (125 pounds per square inch pirators shall meet the minimum test gage). requirements set forth in Table 8 of (c) Where the pressure at any point this subpart. in the supply system exceeds 863 kN/ m.2 (125 pounds per square inch gage), § 84.151 Harness test; minimum re- the respirator shall be equipped with a quirements. pressure-release mechanism that will (a)(1) Shoulder straps employed on prevent the pressure at the hose con- 2 Type A supplied-air respirators shall be nection from exceeding 863 kN/m. (125 tested for strength of material, joints, pounds per square inch gage) under any and seams and must separately with- conditions. stand a pull of 113 kg. (250 pounds) for § 84.149 Type C supplied-air res- 30 minutes without failure. pirator, demand and pressure de- (2) Belts, rings, and attachments for mand class; minimum require- life lines must withstand a pull of 136 ments. kg. (300 pounds) for 30 minutes without (a) Respirators tested under this sec- failure. tion shall be approved only when used (3) The hose shall be firmly attached to supply respirable air at the pres- to the harness so as to withstand a pull sures and quantities required. of 113 kg. (250 pounds) for 30 minutes (b) The manufacturer shall specify without separating, and the hose at- the range of air pressure at the point of tachments shall be arranged so that attachment of the air-supply hose to the pull or drag of the hose behind an the air-supply system, and the range of advancing wearer does not disarrange hose length for the respirator. For ex- the harness or exert pull upon the face- ample, he might specify that the res- piece. pirator be used with compressed air at (4) The arrangement and suitability pressures ranging from 280–550 kN/m.2 of all harness accessories and fittings (40 to 80 pounds per square inch) with will be considered. from 6 to 76 m. (15 to 250 feet) of air- (b)(1) The harness employed on Type supply hose. B supplied-air respirators shall not be (c) The specified air pressure at the uncomfortable, disturbing, or interfere point of attachment of the hose to the with the movements of the wearer. air-supply system shall not exceed 863 (2) The harness shall be easily adjust- kN/m.2 (125 pounds per square inch able to various sizes. gage). (3) The hose shall be attached to the (d)(1) Where the pressure in the air- harness in a manner that will with- supply system exceeds 863 kN/m.2 (125 stand a pull of 45 kg. (100 pounds) for 30 pounds per square inch gage), the res- minutes without separating or showing pirator shall be equipped with a pres- signs of failure. sure-release mechanism that will pre- (4) The design of the harness and at- vent the pressure at the point of at- tachment of the line shall permit drag- tachment of the hose to the air-supply ging the maximum length of hose con- system from exceeding 863 kN/m.2 (125 sidered for approval over a concrete pounds per square inch gage). floor without disarranging the harness (2) The pressure-release mechanism or exerting a pull on the facepiece. shall be set to operate at a pressure not (5) The arrangement and suitability more than 20 percent above the manu- of all harness accessories and fittings facturer’s highest specified pressure. will be considered. For example, if the highest specified (c) The harness employed on Type C pressure is 863 kN/m.2 (125 pounds per respirators shall be similar to that re- square inch), the pressure-release quired on the Type B respirator, or, it mechanism would be set to operate at may consist of a simple arrangement a maximum of 1,035 kN/m.2 (150 pounds for attaching the hose to a part of the per square inch). wearer’s clothing in a practical manner

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that prevents a pull equivalent to drag- (b) The inhalation resistance, drawn ging the maximum length of the hose at the rate of 85 liters (3 cubic feet) per over a concrete floor from exerting pull minute when the blower is not oper- upon the respiratory-inlet covering. ating or under any practical condition (d) Where supplied-air respirators of blower operation shall not exceed have a rigid or partly rigid head cov- the following amounts: ering, a suitable harness shall be re- Maximum length of hose for Maximum resistance, water quired to assist in holding this cov- which respirator is approved column height ering in place. Feet Meters Inches Millimeters § 84.152 Breathing tube test; minimum requirements. 75 23 1.5 38 150 46 2.5 64 (a)(1) Type A and Type B supplied-air 250 76 3.5 89 respirators shall employ one or two 300 91 4.0 102 flexible breathing tubes of the nonkinking type which extend from (c) The exhalation resistance shall the facepiece to a connecting hose cou- not exceed 25 mm. (1 inch) of water-col- pling attached to the belt or harness. umn height at a flow rate of 85 liters (3 (2) The breathing tubes employed cubic feet) per minute when the blower shall permit free head movement, in- is not operating or under any practical sure against closing off by kinking or condition of blower operation. by chin or arm pressure, and they shall not create a pull that will loosen the § 84.154 Airflow resistance test; Type B and Type BE supplied-air res- facepiece or disturb the wearer. pirators; minimum requirements. (b) Breathing tubes employed on Type C supplied-air respirators of the (a) Airflow resistance shall be deter- continuous flow class shall meet the mined when the respirator is com- minimum requirements set forth in pletely assembled with the respiratory- paragraph (a) of this section, however, inlet covering and the hose in the max- an extension of the connecting hose imum length to be considered for ap- may be employed in lieu of the breath- proval, coiled in loops 1.5 to 2.1 m. (5 to ing tubes required. 7 feet) in diameter. (c)(1) A flexible, nonkinking type (b) Airflow resistance shall not ex- breathing tube shall: ceed 38 mm. (1.5 inches) of water-col- (i) Be employed on Type C supplied- umn height to air drawn at the flow air respirators of the demand and pres- rate of 85 liters (3 cubic feet) per sure-demand class; and minute. (ii) Extend from the facepiece to the (c) The exhalation resistance shall demand or pressure-demand valve, ex- not exceed 25 mm. (1 inch) of water-col- cept where the valve is attached di- umn height at this flow rate. rectly to the facepiece. (2) The breathing tube shall permit § 84.155 Airflow resistance test; Type C free head movement, insure against supplied-air respirator, continuous closing off by kinking or by chin or flow class and Type CE supplied-air respirator; minimum requirements. arm pressure, and shall not create a pull that will loosen the facepiece or The resistance to air flowing from disturb the wearer. the respirator shall not exceed 25 mm. (1 inch) of water-column height when § 84.153 Airflow resistance test, Type A the air flow into the respiratory-inlet and Type AE supplied-air res- covering is 115 liters (4 cubic feet) per pirators; minimum requirements. minute. (a) Airflow resistance will be deter- mined when the respirator is com- § 84.156 Airflow resistance test; Type C pletely assembled with the respiratory- supplied-air respirator, demand inlet covering, the air-supply device, class; minimum requirements. and the maximum length of air-supply (a) Inhalation resistance shall not ex- hose coiled for one-half its length in ceed 50 millimeters (2 inches) of water loops 1.5 to 2.1 m. (5 to 7 feet) in diame- at an air flow of 115 liters (4 cubic feet) ter. per minute.

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(b) The exhalation resistance to a § 84.160 Man test for gases and vapors; flow of air at a rate of 85 liters (3 cubic Type A and Type AE respirators; feet) per minute shall not exceed 25 test requirements. millimeters (1 inch) of water. (a) The completely assembled res- pirator will be worn in a chamber con- § 84.157 Airflow resistance test; Type C ± supplied-air respirator, pressure- taining 0.1 0.025 percent isoamyl ace- demand class; minimum require- tate vapor, and the blower, the intake ments. of the hose, and not more than 25 per- (a) The static pressure in the face- cent of the hose length will be located piece shall not exceed 38 mm. (1.5 in isoamyl acetate-free air. inches) of water-column height. (b) The man in the isoamyl acetate (b) The pressure in the facepiece atmosphere will draw his inspired air shall not fall below atmospheric at in- through the hose, connections, and all halation airflows less than 115 liters (4 parts of the air device by means of his cubic feet) per minute. lungs alone (blower not operating). (c) The exhalation resistance to a (c) The 10-minute work test will be flow of air at a rate of 85 liters (3 cubic repeated with the blower in operation feet) per minute shall not exceed the at any practical speed up to 50 revolu- static pressure in the facepiece by tions of the crank per minute. more than 51 mm. (2 inches) of water- column height. § 84.161 Man test for gases and vapors; Type B and Type BE respirators; § 84.158 Exhalation valve leakage test. test requirements. (a) Dry exhalation valves and valve (a) The completely assembled res- seats will be subjected to a suction of pirator will be worn in a chamber con- 25 mm. water-column height while in a taining 0.1 ±0.025 percent isoamyl ace- normal operating position. tate vapor, and the intake of the hose, (b) Leakage between the valve and and not more than 25 percent of the valve seat shall not exceed 30 milli- hose length will be located in isoamyl liters per minute. acetate-free air. (b) The man in the isoamyl acetate § 84.159 Man tests for gases and va- atmosphere will draw his inspired air pors; supplied-air respirators; gen- through the hose and connections by eral performance requirements. means of his lungs alone. (a) Wearers will enter a chamber con- taining a gas or vapor as prescribed in § 84.162 Man test for gases and vapors; §§ 84.160, 84.161, 84.162, and 84.163. Type C respirators, continuous-flow (b) Each wearer will spend 10 minutes class and Type CE supplied-air res- pirators; test requirements. in work to provide observations on freedom of the device from leakage. (a) The completely assembled res- The freedom and comfort allowed the pirator will be worn in a chamber con- wearer will also be considered. taining 0.1 ±0.025 percent isoamyl ace- (c) Time during the test period will tate vapor, the intake of the hose will be divided as follows: be connected to a suitable source of (1) Five minutes. Walking, turning respirable air, and not more than 25 head, dipping chin; and percent of the hose length will be lo- (2) Five minutes. Pumping air with a cated in isoamyl acetate-free air. tire pump into a 28-liter (1 cubic foot) (b) The minimum flow of air required container, or equivalent work. to maintain a positive pressure in the (d) No odor of the test gas or vapor respiratory-inlet covering throughout shall be detected by the wearer in the the entire breathing cycle will be sup- air breathed during any such test, and plied to the wearer, provided however, the wearer shall not be subjected to that airflow shall not be less than 115 any undue discomfort or encumbrance liters per minute for tight-fitting and because of the fit, air delivery, or other not less than 170 liters per minute for features of the respirator during the loose-fitting respiratory inlet-cov- testing period. erings.

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(c) The test will be repeated with the tate vapor, the intake of the hose will maximum rate of flow attainable with- be connected to a suitable source of in specified operating pressures. respirable air, and not more than 25 percent of the hose length will be lo- § 84.163 Man test for gases and vapors; cated in isoamyl acetate-free air. Type C supplied-air respirators, de- mand and pressure-demand classes; (b) The test will be conducted at the test requirements. minimum pressure with the maximum (a) The completely assembled res- hose length and will be repeated at the pirator will be worn in a chamber con- maximum pressure with the minimum taining 0.1 ±0.025 percent isoamyl ace- hose length.

TABLE TO SUBPART J OF PART 84

TABLE 8—AIR-SUPPLY-LINE REQUIREMENTS AND TESTS [42 CFR part 84, subpart J]

Requirements for the air-supply lines of the indicated type of supplied-air respirators Specific requirements Type A Type B Type C

Length of hose ...... Maximum of 91 m. (300 Maximum of 23 m. (75 Maximum of 91 m. (300 feet) in multiples of 7.6 feet), in multiples of feet) in multiples of m. (25 feet). It will be permissible for the ap- 7.6 m. (25 feet). 7.6 m. (25 feet). plicant to supply hose of the approved type of shorter length than 7.6 m. (25 feet) provided it meets the requirements of the part. Air flow ...... None ...... None ...... The air-supply hose with air regulating valve or orifice shall permit a flow of not less than 115 liters (4 cubic feet) per minute to tight-fitting and 170 liters (6 cubic feet) per minute to loose-fitting respiratory-inlet coverings through the maximum length of hose for which ap- proval is granted and at the minimum speci- fied air-supply pressure. The maximum flow shall not exceed 425 liters (15 cubic feet) per minute at the maximum specified air-supply pressure with the minimum length of hose for which approval is granted. Air flow ...... do ...... do ...... The air-supply hose, detachable coupling, and demand valve of the demand class or pres- sure-demand valve of the pressure-demand class for Type C supplied-air respirators, de- mand and pressure-demand classes, shall be capable of delivering respirable air at a rate of not less than 115 liters (4 cubic feet) per minute to the respiratory-inlet covering at an inhalation resistance not exceeding 50 milli- meters (2 inches) of water-column height measured in the respiratory-inlet covering with any combination of air-supply pressure and length of hose within the applicant’s specified range of pressure and hose length. The air- flow rate and resistance to inhalation shall be measured while the demand or pressure-de- mand valve is actuated 20 times per minute by a source of intermittent suction. The max- imum rate of flow to the respiratory-inlet cov- ering shall not exceed 425 liters (15 cubic feet) per minute under the specified operating conditions.

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TABLE 8—AIR-SUPPLY-LINE REQUIREMENTS AND TESTS—Continued [42 CFR part 84, subpart J]

Requirements for the air-supply lines of the indicated type of supplied-air respirators Specific requirements Type A Type B Type C

Air-regulating valve ...... do ...... do ...... If an air-regulating valve is provided, it shall be so designed that it will remain at a specific adjustment, which will not be affected by the ordinary movement of the wearer. The valve must be so constructed that the air supply with the maximum length of hose and at the minimum specified air-supply pressure will not be less than 115 liters (4 cubic feet) of air per minute to tight-fitting and 170 liters (6 cubic feet) of air per minute of loose-fitting res- piratory inlet coverings for any adjustment of the valve. If a demand or pressure-demand valve replaces the air-regulating valve, it shall be connected to the air-supply at the max- imum air pressure for which approval is sought by means of the minimum length of air-supply hose for which approval is sought. The outlet of the demand or pressure-demand valve shall be connected to a source of inter- mittent suction so that the demand or pres- sure-demand valve is actuated approximately 20 times per minute for a total of 100,000 inhalations. To expedite this test, the rate of actuation may be increased if mutually agree- able to the applicant and NIOSH. During this test the valve shall function without failure and without excessive wear of the moving parts. The demand or pressure-demand valve shall not be damaged in any way when sub- jected at the outlet to a pressure or suction of 25 cm. (10 inches) of water gage for 2 min- utes. Noncollapsibility ...... The hose shall not col- Same as Type A ...... None. lapse or exhibit per- manent deformation when a force of 90 kg. (200 pounds) is applied for 5 minutes between 2 planes 7.6 cm. (3 inches) wide on opposite sides of the hose. Nonkinkability ...... None ...... None ...... A 7.6 m. (25 foot) section of the hose will be placed on a horizontal-plane surface and shaped into a one-loop coil with one end of the hose connected to an airflow meter and the other end of the hose supplied with air at the minimum specified supply pressure. The connection shall be in the plane of the loop. The other end of the hose will be pulled tan- gentially to the loop and in the plane of the loop until the hose straightens. To meet the requirements of this test the loop shall main- tain a uniform near-circular shape and ulti- mately unfold as a spiral, without any local- ized deformation that decreases the flow of air to less than 90 percent of the flow when the hose is tested while remaining in a straight line. Strength of hose and Hose and couplings Same as Type A ...... Hose and couplings shall not exhibit any sepa- couplings. shall not separate or ration or failure when tested with a pull of 45 fail when tested with kg. (100 pounds) for 5 minutes and when a pull of 113 kg. (250 tested by subjecting them to an internal air pounds) for 5 minutes. pressure of 2 times the maximum respirator- supply pressure that is specified by the appli- cant or at 173 kN/m. 2 (25 pounds per square inch) gage, whichever is higher.

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TABLE 8—AIR-SUPPLY-LINE REQUIREMENTS AND TESTS—Continued [42 CFR part 84, subpart J]

Requirements for the air-supply lines of the indicated type of supplied-air respirators Specific requirements Type A Type B Type C

Tightness ...... No air leakage shall None ...... Leakage of air exceeding 50 cc. per minute at occur when the hose each coupling shall not be permitted when the and couplings are hose and couplings are joined and are im- joined and the joint(s) mersed in water, with air flowing through the are immersed in respirator under a pressure of 173 kN/m. 2 water and subjected (25 pounds per square inch) gage applied to to an internal air the inlet end of the air-supply hose, or at pressure of 35 kN/m. twice the maximum respirator-supply pressure 2 (5 pounds per that is specified by the applicant, whichever is square inch) gage. higher. Permeation of hose by The permeation of the Same as for Type A ..... Same as for Type A, except the test period gasoline. hose by gasoline will shall be 1 hour. be tested by immers- ing 7.6 m. (25 feet) of hose and one cou- pling in gasoline, with air flowing through the hose at the rate of 8 liters per minute for 6 hours. The air from the hose shall not contain more than 0.01 percent by vol- ume of gasoline vapor at the end of the test. Detachable coupling ...... None ...... None ...... A hand-operated detachable coupling by which the wearer can readily attach or detach the connecting hose shall be provided at a con- venient location. This coupling shall be dura- ble, remain connected under all conditions of normal respirator use, and meet the pre- scribed tests for strength and tightness of hose and couplings.

Subpart K—Non-Powered Air- for removal of any particulate that in- Purifying Particulate Respirators cludes oil-based liquid particulates. (c) Non-powered air-purifying partic- § 84.170 Non-powered air-purifying ulate respirators are classified accord- particulate respirators; description. ing to the efficiency level of the fil- (a) Non-powered air-purifying partic- ter(s) as tested according to the re- ulate respirators utilize the wearer’s quirements of this part. negative inhalation pressure to draw (1) N100, R100, and P100 filters shall the ambient air through the air-puri- demonstrate a minimum efficiency fying filter elements (filters) to remove level of 99.97 percent. particulates from the ambient air. (2) N99, R99, and P99 filters shall They are designed for use as res- demonstrate a minimum efficiency piratory protection against level of 99 percent. atmospheres with particulate contami- (3) N95, R95, and P95 filters shall nants (e.g., dusts, fumes, mists) that demonstrate a minimum efficiency are not immediately dangerous to life level of 95 percent. or health and that contain adequate oxygen to support life. § 84.171 Non-powered air-purifying (b) Non-powered air-purifying partic- particulate respirators; required ulate respirators are classified into components. three series, N-, R-, and P-series. The (a) Each non-powered air-purifying N-series filters are restricted to use in particulate respirator described in those workplaces free of oil aerosols. § 84.170 shall, where its design requires, The R- and P-series filters are intended contain the following component parts:

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(1) Facepiece, mouthpiece with nose- § 84.175 Half-mask facepieces, full clip, hood, or helmet; facepieces, hoods, helmets, and (2) Filter unit; mouthpieces; fit; minimum require- (3) Harness; ments. (4) Attached blower; and (a) Half-mask facepieces and full (5) Breathing tube. facepieces shall be designed and con- (b) The components of each non-pow- structed to fit persons with various fa- ered air-purifying particulate res- cial shapes and sizes either: pirator shall meet the minimum con- (1) By providing more than one face- struction requirements set forth in piece size; or subpart G of this part. (2) By providing one facepiece size § 84.172 Breathing tubes; minimum re- which will fit varying facial shapes and quirements. sizes. Flexible breathing tubes used in con- (b) Full facepieces shall provide for junction with respirators shall be de- optional use of corrective spectacles or signed and constructed to prevent: lenses, which shall not reduce the res- (a) Restriction of free head move- piratory protective qualities of the res- ment; pirator. (b) Disturbance of the fit of (c) Hoods and helmets shall be de- facepieces, mouthpieces, hoods, or hel- signed and constructed to fit persons mets; with various head sizes, provide for the (c) Interference with the wearer’s ac- optional use of corrective spectacles or tivities; and lenses, and insure against any restric- (d) Shutoff of airflow due to kinking, tion of movement by the wearer. or from chin or arm pressure. (d) Mouthpieces shall be equipped with noseclips which are securely at- § 84.173 Harnesses; installation and tached to the mouthpiece or respirator construction; minimum require- and provide an airtight seal. ments. (e) Facepieces, hoods, and helmets (a) Each respirator shall, where nec- shall be designed to prevent eyepiece essary, be equipped with a suitable har- fogging. ness designed and constructed to hold (f) Half-mask facepieces shall not the components of the respirator in po- interfere with the fit of common indus- sition against the wearer’s body. trial safety corrective spectacles. (b) Harnesses shall be designed and constructed to permit easy removal § 84.176 Facepieces, hoods, and hel- and replacement of respirator parts, mets; eyepieces; minimum require- and, where applicable, provide for hold- ments. ing a full facepiece in the ready posi- Facepieces, hoods, and helmets shall tion when not in use. be designed and constructed to provide adequate vision which is not distorted § 84.174 Respirator containers; min- imum requirements. by the eyepieces. (a) Except as provided in paragraph § 84.177 Inhalation and exhalation (b) of this section each respirator shall valves; minimum requirements. be equipped with a substantial, durable container bearing markings which (a) Inhalation and exhalation valves show the applicant’s name, the type of shall be protected against distortion. respirator it contains, and all appro- (b) Inhalation valves shall be de- priate approval labels. signed and constructed and provided (b) Containers for single-use res- where necessary to prevent excessive pirators may provide for storage of exhaled air from adversely affecting more than one respirator, however, filters, except where filters are specifi- such containers shall be designed and cally designed to resist moisture. constructed to prevent contamination (c) Exhalation valves shall be: of respirators which are not removed, (1) Provided where necessary; and to prevent damage to respirators (2) Protected against damage and ex- during transit. ternal influence; and

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(3) Designed and constructed to pre- (7) N95 filters shall be labeled as ‘‘N95 vent inward leakage of contaminated Particulate Filter (95% filter efficiency air. level)’’ and shall be a color other than magenta. § 84.178 Head harnesses; minimum re- (8) R95 filters shall be labeled as ‘‘R95 quirements. Particulate Filter (95% filter efficiency (a) All facepieces shall be equipped level)’’ and shall be a color other than with head harnesses designed and con- magenta. structed to provide adequate tension (9) P95 filters shall be labeled as ‘‘P95 during use and an even distribution of Particulate Filter (95% filter efficiency pressure over the entire area in contact level)’’ and shall be a color other than with the face. magenta. (b) Facepiece head harnesses, except those employed on single-use res- § 84.180 Airflow resistance tests. pirators, shall be adjustable and re- (a) Resistance to airflow will be placeable. measured in the facepiece, mouthpiece, (c) Mouthpieces shall be equipped, hood, or helmet of a particulate res- where applicable, with adjustable and pirator (complete respirator) mounted replaceable harnesses, designed and on a test fixture with air flowing at constructed to hold the mouthpiece in continuous rate of 85 ±2 liters per place. minute, before each test conducted in accordance with § 84.182. § 84.179 Non-powered air-purifying (b) The resistances for particulate particulate respirators; filter identi- respirators upon initial inhalation fication. shall not exceed 35 mm water column (a) The respirator manufacturer, as height pressure and upon initial exha- part of the application for certifi- lation shall not exceed 25 mm water cation, shall specify the filter series column height pressure. and the filter efficiency level (i.e., ‘‘N95’’, ‘‘R95, ‘‘P95’’, ‘‘N99, ‘‘R99’’, § 84.181 Non-powered air-purifying ‘‘P99’’, ‘‘N100’’, ‘‘R100’’, or ‘‘P100’’) for particulate filter efficiency level de- which certification is being sought. termination. (b) Filters shall be prominently la- (a) Twenty filters of each non-pow- beled as follows: ered air-purifying particulate res- (1) N100 filters shall be labeled ‘‘N100 pirator model shall be tested for filter Particulate Filter (99.97% filter effi- efficiency against: ciency level)’’ and shall be a color (1) A solid sodium chloride particu- other than magenta. late aerosol as per this section, if N-se- (2) R100 filters shall be labeled ‘‘R100 ries certification is requested by the Particulate Filter (99.97% filter effi- applicant. ciency level)’’ and shall be a color (2) A dioctyl phthalate or equivalent other than magenta. liquid particulate aerosol as per this (3) P100 filters shall be labeled ‘‘P100 section, if R-series or P-series certifi- Particulate Filter (99.97% filter effi- cation is requested by the applicant. ciency level)’’ and shall be color coded (b) Filters including holders and gas- magenta. kets; when separable, shall be tested (4) N99 filters shall be labeled ‘‘N99 for filter efficiency level, as mounted Particulate Filter (99% filter efficiency on a test fixture in the manner as used level)’’ and shall be a color other than on the respirator. magenta. (c) Prior to filter efficiency testing of (5) R99 filters shall be labeled ‘‘R99 20 N-series filters, the 20 to be tested Particulate Filter (99% filter efficiency shall be taken out of their packaging level)’’ and shall be a color other than and placed in an environment of 85 ±5 magenta. percent relative humidity at 38 ±2.5 °C (6) P99 filters shall be labeled ‘‘P99 for 25 ±1 hours. Following the pre-con- Particulate Filter (99% filter efficiency ditioning, filters shall be sealed in a level)’’ and shall be a color other than gas-tight container and tested within magenta. 10 hours.

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(d) When the filters do not have sepa- -scattering photometer or equiva- rable holders and gaskets, the exhala- lent instrumentation. tion valves shall be blocked so as to en- (i) The minimum efficiency for each sure that leakage, if present, is not in- of the 20 filters shall be determined and cluded in the filter efficiency level recorded and be equal to or greater evaluation. than the filter efficiency criterion list- (e) For non-powered air-purifying ed for each level as follows: particulate respirators with a single P100, R100 and N100: Efficiency ≥99.97% filter, filters shall be tested at a con- P99, R99 and N99: Efficiency ≥99% tinuous airflow rate of 85 ±4 liters per P95, R95 and N95: Efficiency ≥95% minute. Where filters are to be used in pairs, the test-aerosol airflow rate § 84.182 Exhalation valve leakage test; shall be 42.5 ±2 liters per minute minimum requirements. through each filter. (a) Dry exhalation valves and valve (f) Filter efficiency test aerosols. (1) seats will be subjected to a suction of When testing N-series filters, a sodium 25 mm. water-column height while in a chloride or equivalent solid aerosol at normal operating position. 25 ±5 °C and relative humidity of 30 ±10 (b) Leakage between the valve and percent that has been neutralized to valve seat shall not exceed 30 milli- the Boltzmann equilibrium state shall liters per minute. be used. Each filter shall be challenged with a concentration not exceeding 200 Subpart L—Chemical Cartridge mg/m3. Respirators (2) When testing R-series and P-series filters, a neat cold-nebulized dioctyl § 84.190 Chemical cartridge res- phthalate (DOP) or equivalent aerosol pirators: description. at 25 ±5 °C that has been neutralized to (a) Chemical cartridge respirators in- the Boltzmann equilibrium state shall cluding all completely assembled res- be used. Each filter shall be challenged pirators which are designed for use as with a concentration not exceeding 200 respiratory protection during entry mg/m3. into or escape from atmospheres not (3) The test shall continue until min- immediately dangerous to life and imum efficiency is achieved or until an health, are described according to the aerosol mass of at least 200 ±5 mg has specific gases or vapors against which contacted the filter. For P-series fil- they are designed to provide res- ters, if the filter efficiency is decreas- piratory protection, as follows: ing when the 200 ±5 mg challenge point Maximum is reached, the test shall be continued use con- until there is no further decrease in ef- Type of chemical cartridge respirator 1 centration, parts per ficiency. million (g) The sodium chloride test aerosol Ammonia ...... 300 shall have a particle size distribution Chlorine ...... 10 with count median diameter of 0.075 Hydrogen chloride ...... 50 ±0.020 micrometer and a standard geo- Methyl amine ...... 100 Organic vapor ...... 2 1,000 metric deviation not exceeding 1.86 at Sulfur dioxide ...... 50 the specified test conditions as deter- Vinyl chloride ...... 10 mined with a scanning mobility par- 1 Not for use against gases or vapors with poor warning ticle sizer or equivalent. The DOP aer- properties (except where MSHA or Occupational Safety and Health Administration standards may permit such use for a osol shall have a particle size distribu- specific gas or vapor) or those which generate high heats of tion with count median diameter of reaction with sorbent material in the cartridge. ± 2 Maximum use concentrations are lower for organic vapors 0.185 0.020 micrometer and a standard which produce atmospheres immediately hazardous to life or geometric deviation not exceeding 1.60 health at concentrations equal to or lower than this at the specified test conditions as de- concentration. termined with a scanning mobility par- (b) Chemical cartridge respirators for ticle sizer or equivalent. respiratory protection against gases or (h) The efficiency of the filter shall vapors, which are not specifically list- be monitored and recorded throughout ed with their maximum use concentra- the test period by a suitable forward- tion, may be approved if the applicant

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submits a request for such approval, in codeloflfederallregulations/ writing, to the Institute. The Institute ibrllocations.html. shall consider each such application and accept or reject the application § 84.194 Filters used with chemical after a review of the effects on the cartridges; location; replacement. wearer’s health and safety and in the (a) Particulate matter filters used in light of any field experience in use of conjunction with a chemical cartridge chemical cartridge respirators as pro- shall be located on the inlet side of the tection against such hazards. cartridge. § 84.191 Chemical cartridge res- (b) Filters shall be incorporated in or pirators; required components. firmly attached to the cartridge and (a) Each chemical cartridge res- each filter assembly shall, where appli- pirator described in § 84.190 shall, where cable, be designed to permit its easy re- its design requires, contain the fol- moval from and replacement on the lowing component parts: cartridge. (1) Facepiece, mouthpiece, and nose- clip, hood, or helmet; § 84.195 Breathing tubes; minimum re- (2) Cartridge; quirements. (3) Cartridge with filter; Flexible breathing tubes used in con- (4) Harness; junction with respirators shall be de- (5) Breathing tube; and signed and constructed to prevent: (6) Attached blower. (a) Restriction of free head move- (b) The components of each chemical ment; cartridge respirator shall meet the (b) Disturbance of the fit of minimum construction requirements facepieces, mouthpieces, hoods, or hel- set forth in subpart G of this part. mets; § 84.192 Cartridges in parallel; resist- (c) Interference with the wearer’s ac- ance requirements. tivities; and (d) Shutoff of airflow due to kinking, Where two or more cartridges are used in parallel, their resistance to air- or from chin or arm pressure. flow shall be essentially equal. § 84.196 Harnesses; installation and § 84.193 Cartridges; color and mark- construction; minimum require- ings; requirements. ments. The color and markings of all car- (a) Each respirator shall, where nec- tridges or labels shall conform with the essary, be equipped with a suitable har- requirements of the American National ness designed and constructed to hold Standards Institute, American Na- the components of the respirator in po- tional Standard for Identification of sition against the wearer’s body. Air-Purifying Respirator Canisters and (b) Harnesses shall be designed and Cartridges, ANSI K13.1–1973. ANSI constructed to permit easy removal K13.1 is incorporated by reference and and replacement of respirator parts has been approved by the Director of and, where applicable, provide for hold- the Federal Register in accordance ing a full facepiece in the ready posi- with 5 U.S.C. 552(a) and 1 CFR part 51. tion when not in use. Copies may be obtained from American National Standards Institute, Inc., 1430 § 84.197 Respirator containers; min- Broadway, New York, NY 10018. Copies imum requirements. may be inspected at the NIOSH, Cer- Respirators shall be equipped with a tification and Quality Assurance substantial, durable container bearing Branch, 1095 Willowdale Road, Morgan- markings which show the applicant’s town, WV 26505–2888, or at the National Archives and Records Administration name, the type and commercial des- (NARA). For information on the avail- ignation of the respirator it contains ability of this material at NARA, call and all appropriate approval labels. 202–741–6030, or go to: http:// www.archives.gov/federallregister/

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§ 84.198 Half-mask facepieces, full (1) Protected against damage and ex- facepieces, mouthpieces, hoods, and ternal influence; and helmets; fit; minimum require- (2) Designed and constructed to pre- ments. vent inward leakage of contaminated (a) Half-mask facepieces and full air. facepieces shall be designed and con- structed to fit persons with various fa- § 84.201 Head harnesses; minimum re- quirements. cial shapes and sizes either: (1) By providing more than one face- (a)(1) Facepieces for chemical car- piece size; or tridge respirators other than single-use (2) By providing one facepiece size vinyl chloride shall be equipped with which will fit varying facial shapes and adjustable and replaceable head har- sizes. nesses designed and constructed to pro- (b) Hoods and helmets shall be de- vide adequate tension during use and signed and constructed to fit persons an even distribution of pressure over with various head sizes, provide for the the entire area in contact with the optional use of corrective spectacles or face. lenses, and insure against any restric- (2) Facepieces for single-use vinyl tion of movement by the wearer. chloride respirators shall be equipped with adjustable head harnesses de- (c) Mouthpieces shall be equipped signed and constructed to provide ade- with noseclips which are securely at- quate tension during use and an even tached to the mouthpiece or respirator distribution of pressure over the entire and provide an airtight fit. area in contact with the face. (d) Full facepieces shall provide for (b) Mouthpieces shall be equipped optional use of corrective spectacles or where applicable, with an adjustable lenses which shall not reduce the res- and replaceable harness designed and piratory protective qualities of the res- constructed to hold the mouthpiece in pirator. place. (e) Facepieces, hoods, and helmets shall be designed to prevent eyepiece § 84.202 Air velocity and noise levels; fogging. hoods and helmets; minimum re- quirements. § 84.199 Facepieces, hoods, and hel- Noise levels generated by the res- mets; eyepieces; minimum require- ments. pirator will be measured inside the hood or helmet at maximum airflow Facepieces, hoods, and helmets shall obtainable and shall not exceed 80 dBA. be designed and constructed to provide adequate vision which is not distorted § 84.203 Breathing resistance test; min- by the eyepieces. imum requirements. (a) Resistance to airflow will be § 84.200 Inhalation and exhalation measured in the facepiece, mouthpiece, valves; minimum requirements. hood, or helmet of a chemical cartridge (a) Inhalation and exhalation valves respirator mounted on a test fixture shall be provided where necessary and with air flowing at a continuous rate of protected against distortion. 85 liters per minute, both before and (b) Inhalation valves shall be de- after each test conducted in accordance signed and constructed to prevent ex- with §§ 84.206 through 84.207. cessive exhaled air from entering car- (b) The maximum allowable resist- tridges or adversely affecting canisters. ance requirements for chemical car- (c) Exhalation valves shall be— tridge respirators are as follows:

MAXIMUM RESISTANCE [Millimeter water column height]

Inhalation Type of chemical-cartridge respirator Exhalation Initial Final 1

Other than single-use vinyl chloride respirators: For gases, vapors, or gases and vapors ...... 40 45 20

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MAXIMUM RESISTANCE—Continued [Millimeter water column height]

Inhalation Type of chemical-cartridge respirator Exhalation Initial Final 1

For gases, vapors, or gases and vapors, and particulates ...... 50 70 20 Single-use respirator with valves: For vinyl chloride ...... 20 25 20 For vinyl chloride and particulates ...... 30 45 2 Single-use respirator without valves: For vinyl chloride ...... 15 20 (2) For vinyl chloride and particulates ...... 25 40 (2) 1 Measured at end of service life specified in Table 11 of this subpart. 2 Same as inhalation.

§ 84.204 Exhalation valve leakage test; (i) Two minutes, nodding and turning minimum requirements. head; (a) Dry exhalation valves and valve (ii) Two minutes, calisthenic arm seats will be subjected to a suction of movements; 25 mm. water-column height while in a (iii) Two minutes, running in place; normal operating position. and (b) Leakage between the valve and (iv) Two minutes, pumping with a valve seat shall not exceed 30 milli- tire pump into a 28-liter (1 cubic-foot) liters per minute. container. (4) Each wearer shall not detect the § 84.205 Facepiece test; minimum re- odor of isoamyl-acetate vapor during quirements. the test. (a) The complete chemical cartridge respirator will be fitted to the faces of § 84.206 Particulate tests; respirators persons having varying facial shapes with filters; minimum require- and sizes. ments; general. (b) Where the applicant specifies a (a) Three respirators with cartridges facepiece size or sizes for the respirator containing, or having attached to together with the approximate meas- them, filters for protection against urement of faces they are designed to particulates will be tested in accord- fit, the Institute will provide test sub- ance with the provisions of § 84.207. jects to suit such facial measurements. (c) Any chemical cartridge respirator (b) In addition to the test require- part which must be removed to perform ments set forth in paragraph (a) of this the facepiece or mouthpiece fit test section, three such respirators will be shall be replaceable without special tested, as appropriate, in accordance tools and without disturbing facepiece with the provisions of §§ 84.179 through or mouthpiece fit. 84.183; however, the maximum allow- (d) The facepiece or mouthpiece fit able resistance of complete particulate, test using the positive or negative and gas, vapor, or gas and vapor chem- pressure recommended by the applicant ical cartridge respirators shall not ex- and described in his instructions will ceed the maximum allowable limits set be used before each test. forth in § 84.203. (e)(1) Each wearer will enter a cham- ber containing 100 p.p.m. isoamyl ace- § 84.207 Bench tests; gas and vapor tate vapor for half-mask facepieces, tests; minimum requirements; gen- eral. and 1,000 p.p.m. for full facepieces, mouthpieces, hoods, and helmets. (a) Bench tests will be made on an (2) The facepiece or mouthpiece may apparatus that allows the test atmos- be adjusted, if necessary, in the test phere at 50 ±5 percent relative humid- chamber before starting the test. ity and room temperature, approxi- (3) Each wearer will remain in the mately 25 °C, to enter the cartridges chamber for 8 minutes while per- continuously at predetermined con- forming the following activities: centrations and rates of flow, and that

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has means for determining the test life cent relative humidity air through of the cartridges. them at the flow rate of 25 liters per (b) Where two cartridges are used in minute (l.p.m.) for 6 hours. parallel on a chemical cartridge res- (e) Two air purifying cartridges or pirator, the bench test will be per- pairs of cartridges will be equilibrated formed with the cartridges arranged in by passing 85 percent relative humidity parallel, and the test requirements will air through them at the flow rate of 25 apply to the combination rather than l.p.m. to the individual cartridges. (f) All cartridges will be resealed, (c) Three cartridges or pairs of car- tridges will be removed from con- kept in an upright position, at room tainers and tested as received from the temperatures, and tested within 18 applicant. hours. (d) Two air purifying cartridges or (g) Cartridges will be tested and shall pairs of cartridges will be equilibrated meet the minimum requirements set at room temperature by passing 25 per- forth in Table 11 of this subpart.

TABLES TO SUBPART L OF PART 84

TABLES 9–10 [RESERVED] TABLE 11—CARTRIDGE BENCH TESTS AND REQUIREMENTS [42 CFR part 84, subpart L]

Test atmosphere Penetra- Flowrate Number of Minimum Cartridge Test condition tion 1 Concentra- (l.p.m.) tests life 2 (min.) Gas or vapor tion (p.p.m.) (p.p.m.)

Ammonia ...... As received ...... NH3 1000 64 3 50 50 Ammonia ...... Equilibrated ...... NH3 1000 32 4 50 50 Chlorine ...... As received ...... Cl2 500 64 3 5 35 Chlorine ...... Equilibrated ...... Cl2 500 32 4 5 35 Hydrogen chlo- As received ...... HCl 500 64 3 5 50 ride. Hydrogen chlo- Equilibrated ...... HCl 500 32 4 5 50 ride. Methylamine ...... As received ...... CH3 NH2 1000 64 3 10 25 Methylamine ...... Equilibrated ...... CH3 NH2 1000 32 4 10 25 Organic vapors .. As received ...... CCl4 1000 64 3 5 50 Organic vapors .. Equilibrated ...... CCl4 1000 32 4 5 50 Sulfur dioxide ..... As received ...... SO2 500 64 3 5 30 Sulfur dioxide ..... Equilibrated ...... SO2 500 32 4 5 30 1 Minimum life will be determined at the indicated penetration. 2 Where a respirator is designed for respiratory protection against more than one type of gas or vapor, as for use in ammonia and in chlorine, the minimum life shall be one-half that shown for each type of gas or vapor. Where a respirator is designed for respiratory protection against more than one gas of a type, as for use in chlorine and sulfur dioxide, the stated minimal life shall apply.

Subpart M [Reserved] cording to their construction as fol- lows: Subpart N—Special Use (a) Front-mounted or back-mounted Respirators gas masks; (b) Chin-style gas masks; § 84.250 Vinyl chloride respirators; de- (c) Chemical-cartridge respirators; scription. (d) Powered air-purifying respirators; Vinyl chloride respirators, including and all completely assembled respirators (e) Other devices, including combina- which are designed for use as res- tion respirators. piratory protection during entry into and escape from vinyl chloride atmospheres containing adequate oxy- gen to support life, are described ac-

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§ 84.251 Required components. facturer’s application. (Example: If a (a) Each vinyl chloride respirator de- manufacturer requests approval of a scribed in § 84.250 shall, where its de- respirator for six hours use against ex- sign requires, contain the following posure to vinyl chloride, the maximum component parts: allowable penetration after nine hours (1) Facepiece; of testing shall not exceed 1 ppm vinyl (2) Canister with end-of-service-life chloride.) indicator; (3) Cartridge with end-of-service-life § 84.253 Chemical-cartridge res- indicator; pirators; requirements and tests. (4) Harness; (a) Except for the tests prescribed in (5) Attached blower; and §§ 84.206 and 84.207, the minimum re- (6) Breathing tube. quirements and performance tests for (b) The components of each vinyl chemical-cartridge respirators pre- chloride respirator shall meet the min- scribed in Subpart L of this part are imum construction requirements set applicable to replaceable-cartridge and forth in Subpart G of this part. single-use vinyl chloride chemical-car- tridge respirators. § 84.252 Gas masks; requirements and (b) The following bench tests are ap- tests. plicable to cartridges designed for use (a) Except for the tests prescribed in with chemical-cartridge respirators for § 84.126, the minimum requirements and entry into and escape from vinyl chlo- performance tests for gas masks, pre- ride atmospheres containing adequate scribed in Subpart I of this part, are oxygen to support life: applicable to vinyl chloride gas masks. (1) Where two cartridges are used in (b) The following bench tests are ap- parallel on a chemical-cartridge res- plicable to canisters designed for use pirator, the bench test requirements with gas masks for entry into and es- will apply to the combination rather cape from vinyl chloride atmospheres than the individual cartridges. containing adequate oxygen to support life: (2) Four cartridges or pairs of car- ± ° (1) Four canisters will be equilibrated tridges will be equilibrated at 25 5 C ± at 25 ±5 °C by passing 85 ±5 percent rel- by passing 85 5 percent relative hu- ative humidity air through them at 64 midity air through them at 25 liters liters per minute for six hours. per minute for six hours. (2) The equilibrated canisters will be (3) The equilibrated cartridges will be resealed, kept in an upright position at resealed, kept in an upright position, room temperature, and tested accord- at room temperature, and tested ac- ing to paragraph (b)(3) of this section cording to paragraphs (b)(4) and (b)(5) within 18 hours. of this section for other than single-use (3) The canisters equilibrated and respirators or according to paragraphs stored as described in paragraphs (b) (1) (b)(6) and (b)(7) of this section for sin- and (2) of this section will be tested on gle-use respirators within 18 hours. an apparatus that allows the test at- (4) The cartridges or pairs of car- mosphere at 85 ±5 percent relative hu- tridges for other than single-use res- midity and 25 ±5 °C to enter the can- pirators, equilibrated and stored as de- ister continuously at a concentration scribed in paragraphs (b)(1), (b)(2), and of 25 ppm vinyl chloride monomer at a (b)(3) of this section, will be tested on total flow rate of 64 liters per minute. an apparatus that allows the test at- (4) The maximum allowable penetra- mosphere at 85 ±5 percent relative hu- tion after six hours of testing accord- midity and 25 ±5 °C, to enter the car- ing to paragraph (b)(3) of this section tridges or pairs of cartridges continu- shall not exceed 1 ppm vinyl chloride. ously at a concentration of 10 ppm (c) Where canisters are submitted for vinyl chloride monomer at a total testing and approval with a service life flowrate of 64 liters per minute. of more than four hours, the period of (5) The maximum allowable penetra- time for testing for vinyl chloride pen- tion after 90 minutes testing of car- etration will be performed at 150% of tridges or pairs of cartridges for other the service life specified in the manu- than single-use respirators, according

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to paragraph (b)(4) of this section shall ters per minute for loose-fitting hoods not exceed 1 ppm vinyl chloride. and helmets. (6) The single-use respirators, equili- (4) The maximum allowable penetra- brated and stored as described in para- tion after six hours of testing accord- graphs (b)(2) and (b)(3) of this section, ing to paragraph (b)(3) of this section will be tested on an apparatus that al- shall not exceed 1 ppm vinyl chloride. lows a test atmosphere at 85 ±5 percent relative humidity and 25 ±5 °C to be cy- § 84.255 Requirements for end-of-serv- cled through the respirator by a -life indicator. breathing machine at a concentration (a) Each canister or cartridge sub- of 10 ppm vinyl chloride monomer at mitted for testing and approval in ac- the rate of 24 respirations per minute cordance with §§ 84.252, 84.253, and 84.254 at a minute volume of 40 ±0.6 liters. Air shall be equipped with a canister or exhaled through the respirator will be cartridge end-of-service-life indicator 35 ±2 °C with 94 ±3 percent relative hu- which shows a satisfactory indicator midity. change or other obvious warning before (7) The maximum allowable penetra- 1 ppm vinyl chloride penetration oc- tion after 144 minutes testing of res- curs. The indicator shall show such pirators, according to paragraph (b)(6) change or afford such warning at 80 ±10 of this section, shall not exceed 1 ppm percent of the total service life to 1 vinyl chloride. ppm leakage, as determined by con- tinuing each test described in § 84.254 Powered air-purifying res- §§ 84.252(b), 84.253(b), and 84.254(b) until pirators; requirements and tests. a 1 ppm leakage of vinyl chloride oc- (a) Except for the tests prescribed in curs. § 84.207, the minimum requirements and (b) The applicant shall provide suffi- performance tests for powered air-puri- cient pretest data to verify the per- fying respirators prescribed in subpart formance of the end-of-service-life indi- L of this part are applicable to vinyl cator required in paragraph (a) of this chloride powered air-purifying res- section. pirators. (b) The following bench tests are ap- § 84.256 Quality control requirements. plicable to cartridges designed for use with powered air-purifying respirators (a) In addition to the construction for entry into and escape from vinyl and performance requirements speci- chloride atmospheres containing ade- fied in §§ 84.251, 84.252, 84.253, 84.254, and quate oxygen to support life: 84.255, the quality control requirements (1) Four cartridges will be equili- in paragraphs (b), (c), and (d) of this brated at 25 ± °C by passing 85 ±5 per- section apply to approval of gas masks, cent relative humidity air through chemical cartridge respirators, and them at 115 liters per minute for tight- powered air-purifying respirators for fitting facepieces and 170 liters per entry into and escape from vinyl chlo- minute for loose-fitting hoods and hel- ride atmospheres containing adequate mets, for six hours. oxygen to support life. (2) The equilibrated cartridges will be (b) The respirators submitted for ap- resealed, kept in an upright position at proval as described in paragraph (a) of room temperature and tested according this section shall be accompanied by a to paragraph (b)(3) of this section with- complete quality control plan meeting in 18 hours. the requirements of subpart E of this (3) The cartridges equilibrated and part. stored as described in paragraphs (b) (1) (c)(1) The applicant shall specify in and (2) of this section will be tested on the plan that a sufficient number of an apparatus that allows the test at- samples will be drawn from each bulk mosphere at 85 ±5 percent relative hu- container of sorbent material and that midity and 25 ±5 °C to enter the car- where activated carbon is used, the fol- tridge continuously at a concentration lowing specific tests will be performed: of 25 ppm vinyl chloride monomer at a (i) Apparent density; total flow rate of 115 liters per minute (ii) Iodine number; for tight-fitting facepieces and 170 li- (iii) Moisture content;

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(iv) Carbon tetrachloride number; Subparts O–JJ [Reserved] and (v) Mesh size. Subpart KK—Dust, Fume, and Mist; (2) The tests in paragraph (c)(1) of this section shall be performed in a Pesticide; Paint Spray; Pow- quantity necessary to assure continued ered Air-Purifying High Effi- satisfactory conformance of the can- ciency Respirators and Com- isters and cartridges to the require- bination Gas Masks ments of this subpart. (d) Final performance quality control § 84.1100 Scope and effective dates. tests on the complete canisters and The purpose of this subpart KK is to cartridges shall be accomplished using establish procedures and requirements the bench tests and procedures pre- for issuing extensions of approval of scribed in §§ 84.252, 84.253, 84.254, and particulate respirators certified prior 84.255. to July 10, 1995 under the provisions of 30 CFR part 11 (See 30 CFR part 11 edi- § 84.257 Labeling requirements. tion, as revised July 1, 1994.), new ap- (a) A warning shall be placed on the provals and extensions of approval of label of each gas mask, chemical-car- particulate respirators for applications tridge respirator, and powered air-puri- that are in NIOSH receipt on July 10, fying respirator, and on the label of 1995, and approval of powered air-puri- each canister and cartridge, alerting fying respirators. the wearer to the need for a fitting test (a) Air-purifying respirators with in accordance with the manufacturer’s particulate filters approved under the facepiece fitting instructions, pro- provisions of this subpart after July 10, viding service life information, pro- 1995 will have a 30 CFR part 11 approval viding specific instructions for dis- label. posal, and advising that the wearer (b) Only changes or modifications of may communicate to NIOSH any dif- non-powered air-purifying respirators ficulties that may be experienced in with particulate filters approved under the design and performance of any gas the provisions of subparts I, K, L, or M mask, chemical-cartridge respirator, or of 30 CFR part 11 or paragraph (a) of powered air-purifying respirator ap- this section and deemed necessary by proved under the requirements of this NIOSH to ensure the health and safety subpart. The service lives of respirators of the wearer will be approved until meeting the test requirements of this July 10, 1998 and will have a 30 CFR subpart shall be specified as follows: part 11 approval label. (c) Only changes or modifications of Chemical-cartridge respirator ...... 1 hour. powered air-purifying respirators with Gas mask...... 4 hours. particulate filters approved under the Powered air-purifying respirator ...... 4 hours. provisions of subparts I, K, L, or M of (b) Where the service life of a res- 30 CFR part 11 or paragraph (a) of this pirator is approved for more than four section and deemed necessary by hours, the service life for which the NIOSH to ensure the health and safety respirator has been approved will be of the wearer will be approved under specified. this subpart until July 10, 1998 and will have a 30 CFR part 11 label. § 84.258 Fees. (d) Approval of powered air-purifying The following fees shall be charged respirators will be issued under this for the examination, inspection, and subpart. Particulate filters for powered testing of complete assemblies and air-purifying respirators approved components of respirators described in under the provisions of this subpart §§ 84.250 and 84.251: shall be only high-efficiency (HEPA) as described in § 84.1130(a)(4) and will Complete gas mask ...... $1,100 carry a 42 CFR part 84 approval label. Complete chemical-cartridge res- pirator...... 1,150 In addition, changes or modifications Complete powered air-purifying res- of powered HEPA air-purifying res- pirator...... 1,500 pirators approved under the provisions Canister or cartridge only ...... 750 of this subpart KK will be approved

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under this subpart and will have a 42 (a) Gas masks with particulate filter, CFR part 84 approval label. including pesticide gas masks— (1) Single hazard—$1,100. § 84.1101 Definitions. (2) Type N—$4,100. As used in this subpart (b) Dust, fume and mist respirators— (a) Air Contamination Level means the (1) Single particulate hazard having standards of contaminant levels pre- an Air Contamination Level more than scribed by the Secretary of Labor in 0.05 mg./m.3 or 2 million particles per accordance with the provisions of the cubic foot—$500. Occupational Safety and Health Act of (2) Combination particulate hazards 1970 (Pub. L. 91–596; 84 Stat. 1590). having an Air Contamination Level (b) DOP means a homogenous liquid more than 0.05 mg./m.3 or 2 million par- aerosol, having a particle diameter of ticles per cubic foot—$750. 0.3 micrometer, which is generated by (3) Particulate hazards having an Air vaporization and condensation of Contamination Level less than 0.05 dioctyl phthalate. mg./m.3 or 2 million particles per cubic (c) Pesticide means: foot, radon daughters—$1,250. (1) Any substance or mixture of sub- (4) All dusts, fumes and mists—$2,000. stances (including solvents and impuri- (c) Paint spray respirators—$1,600. ties) intended to prevent, destroy, repel, or mitigate any insect, rodent, (d) Pesticide respirators—$1,600. nematode, fungus, weed, or other form (e) Chemical cartridge respirators of plant or animal life or virus; and with particulate filter—$1,150. (2) Any substance or mixture of sub- § 84.1103 Approval labels and mark- stances (including solvents and impuri- ings; approval of contents; use. ties) intended for use as a plant regu- lator, defoliant, or desiccant, as de- (a) Full-scale reproductions of ap- fined in the Federal Insecticide, Fun- proval labels and markings, and a gicide, and Rodenticide Act of 1947, as sketch or description of the method of amended (7 U.S.C. 135–135k), excluding application and position on the har- fumigants which are applied as gases or ness, container, canister, cartridge, fil- vapors or in a solid or liquid form as ter, or other component, together with pellets or poured liquids for subsequent instructions for the use and mainte- release as gases or vapors. nance of the respirator shall be sub- (d) Radionuclide means an iden- mitted to MSHA and the Institute for tified by the constitution of its nucleus approval. (specified by the number of protons Z, (b) Approval labels for non-powered number of neutrons N, and energy, or, and powered air-purifying dust, fume, alternatively, by the atomic number Z, mist respirators approved prior to July mass number A=(N+Z), and atomic 10, 1995 under the provisions of subpart mass) which exists for a measurable K of 30 CFR part 11 (See 30 CFR Part 11 time; decays or disintegrates spontane- edition, revised as of July 1, 1994.) shall ously, emits radiation, and results in bear the emblem of the Mine Safety the formation of new nuclides. and Health Administration and the (e) Smoke means the products of in- seal of the Department of Health and complete combustion of organic sub- Human Services, the applicant’s name stances in the form of solid and liquid and address, an approval number as- particles and gaseous products in air, signed by the Institute, a statement usually of sufficient concentration to that the respirator was tested and ap- perceptibility obscure vision. proved under subpart K of 30 CFR part 11 and, where appropriate, restrictions § 84.1102 Examination, inspection and or limitations placed upon the use of testing of complete respirator as- the respirator by the Institute. The ap- semblies; fees. proval number assigned by the Insti- The following fees shall be charged tute shall be designated by the prefix by the Institute for the examination, TC and a serial number. inspection and testing of complete res- (c) Approval labels for powered air- pirator assemblies approved under this purifying respirators approved under subpart: the provisions of this subpart shall

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bear the emblem of the National Insti- (c) The Institute shall, where nec- tute for Occupational Safety and essary, notify the applicant when addi- Health and the seal of the Department tional labels, markings, or instructions of Health and Human Services, the ap- will be required. plicant’s name and address, an ap- (d) Approval labels and markings proval number assigned by the Insti- shall only be used by the applicant to tute, a statement stating the res- whom they were issued. pirator was tested under the provisions (e) Legible reproductions or abbre- of this subpart, and, where appropriate, viated forms of the label approved by restrictions or limitations placed upon the Institute for use on each respirator the use of the respirator by the Insti- tute. The approval number assigned by shall be attached to or printed at the the Institute shall be designated by the following locations: prefix TC and a serial number.

Respirator type Label type Location

Gas mask with a particulate filter, including pes- Entire ...... Mask and container. ticide gas mask. Dust, fume, and mist respirators ...... Entire ...... Respirator container and filter container. Abbreviated ...... Filters. Chemical-cartridge respirator with a particulate fil- Entire ...... Respirator container, cartridge container, and fil- ter, including paint spray respirator. ter containers (where applicable). Abbreviated ...... Cartridges and filters and filter containers. Pesticide respirator ...... Entire ...... Respirator container, and cartridge and filter con- tainers. Abbreviated ...... Cartridges and filters.

(f) The use of any MSHA and Insti- cape from atmospheres which contain tute approval label obligates the appli- adequate oxygen to support life and cant to whom it is issued to maintain hazardous particulates, are described or cause to be maintained the approved as follows: quality control sampling schedule and (1) Air-purifying respirators, either the acceptable quality level for each with replaceable or reusable filters, de- characteristic tested, and to assure signed as respiratory protection that it is manufactured according to against dusts: the drawings and specifications upon (i) Having an air contamination level which the certificate of approval is not less than 0.05 milligram per cubic based. meter of air, including but not limited (g) Each respirator, respirator com- to coal, arsenic, cadmium, chromium, ponent, and respirator container shall, lead, and manganese; or as required by the Institute to assure (ii) Having an air contamination quality control and proper use of the level not less than 2 million particles respirator, be labeled distinctly to per cubic foot of air, including but not show the name of the applicant, and limited to aluminum, flour, iron ore, the name and letters or numbers by and free silica, resulting principally which the respirator or respirator com- from the disintegration of a solid, e.g., ponent is designated for trade pur- dust clouds produced in mining, quar- poses, and the lot number, serial num- rying, and tunneling, and in dusts pro- ber, or approximate date of manufac- duced during industrial operations, ture. such as grinding, crushing, and the general processing of minerals and EDITORIAL NOTE: At 60 FR 30388, June 8, other materials. 1995, § 84.1103 was added with two paragraph (2) Air-purifying respirators, with re- (c) designations. placeable filters, designed as res- piratory protection against fumes of § 84.1130 Respirators; description. various metals having an air contami- (a) Dust, fume, and mist respirators, nation level not less than 0.05 milli- including all completely assembled res- gram per cubic meter, including but pirators designed for use as respiratory not limited to aluminum, antimony, protection during entry into and es- arsenic, cadmium, chromium, ,

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iron, lead, magnesium, manganese, (c) Pesticide respirators, including mercury (except mercury vapor), and all completely assembled respirators zinc, which result from the sublimation which are designed for use as res- or condensation of their respective va- piratory protection during entry into pors, or from the chemical reaction be- and escape from atmospheres which tween their respective vapors and contain pesticide hazards, are de- gases. scribed according to their construction (3) Air-purifying respirators, with re- as follows: placeable filters, designed as res- (1) Front-mounted or back-mounted piratory protection against mists of gas masks; materials having an air contamination (2) Chin-style gas mask; level not less than 0.05 milligram per (3) Chemical cartridge; cubic meter or 2 million particles per (4) Air-purifying respirator with at- cubic foot, e.g., mists produced by tached blower; and, spray coating with vitreous enamels, (5) Other devices, including combina- chromic acid mist produced during tion respirators. chromium plating, and other mists of (d) Respirators with cartridges con- materials whose liquid vehicle does not taining or having attached to them, fil- produce harmful gases or vapors. ters for protection against mists of (4) Air-purifying respirators, with re- paints, lacquers, and enamels. These placeable filters, designed as res- respirators are not for use against piratory protection against dusts, gases or vapors with poor warning fumes, and mists having an air con- properties (except where MSHA or Oc- tamination level less than 0.05 milli- cupational Safety and Health Adminis- gram per cubic meter, including but tration standards may permit such use not limited to lithium hydride and be- for a specific gas or vapor) or those ryllium, and against radionuclides. which generate high heats of reaction (5) Air-purifying respirators, with re- with sorbent material in the cartridge. placeable filters, designed as res- (e) Respirators with cartridges con- piratory protection against radon taining or having attached to them fil- daughters, and radon daughters at- ters for protection against dusts, tached to dusts, fumes, and mists. fumes, and mists, except the mists of (6) Air-purifying respirators, with re- paints, lacquers, and enamels. These placeable filters, designed as res- respirators are not for use against piratory protection against asbestos- gases or vapors with poor warning containing dusts and mists. properties (except where MSHA or Oc- (7) Air-purifying respirators, with re- cupational Safety and Health Adminis- placeable filters, designed as protec- tration standards may permit such use tion against various combinations of for a specific gas or vapor) or those particulate matter. which generate high heats of reaction (8) Air-purifying dust respirators de- with sorbent material in the cartridge. signed as respiratory protection against pneumoconiosis- and fibrosis- § 84.1131 Respirators; required compo- producing dusts, or dusts and mists, in- nents. cluding but not limited to aluminum, (a) Each respirator described in asbestos, coal, flour, iron ore, and free § 84.1130 shall, where its design re- silica. quires, contain the following compo- (b) Gas masks containing filters for nent parts: protection against dusts, fumes, mists, (1) Facepiece, mouthpiece with nose- and smokes in combination with gases, clip, hood, or helmet; vapors, or gases and vapors. These res- (2) Filter unit, canister with filter, or pirators are not for use against gases cartridge with filter; or vapors with poor warning properties (3) Harness; (except where MSHA or Occupational (4) Attached blower; and Safety and Health Administration (5) Breathing tube. standards may permit such use for a (b) The components of each res- specific gas or vapor) or those which pirator shall meet the minimum con- generate high heats of reaction with struction requirements set forth in sorbent material in the canister. Subpart G of this part.

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§ 84.1132 Breathing tubes; minimum § 84.1135 Half-mask facepieces, full requirements. facepieces, hoods, helmets, and mouthpieces; fit; minimum require- (a) Flexible breathing tubes used in ments. conjunction with respirators shall be designed and constructed to prevent: (a) Half-mask facepieces and full (1) Restriction of free head move- facepieces shall be designed and con- structed to fit persons with various fa- ment; cial shapes and sizes either: (2) Disturbance of the fit of (1) By providing more than one face- facepieces, mouthpieces, hoods, or hel- piece size; or mets; (2) By providing one facepiece size (3) Interference with the wearer’s ac- which will fit varying facial shapes and tivities; and sizes. (4) Shutoff of airflow due to kinking, (b) Full facepieces shall provide for or from chin or arm pressure. optional use of corrective spectacles or lenses, which shall not reduce the res- § 84.1133 Harnesses; installation and piratory protective qualities of the res- construction; minimum require- ments. pirator. (c) Hoods and helmets shall be de- (a) Each respirator shall, where nec- signed and constructed to fit persons essary, be equipped with a suitable har- with various head sizes, provide for the ness designed and constructed to hold optional use of corrective spectacles or the components of the respirator in po- lenses, and insure against any restric- sition against the wearer’s body. tion of movement by the wearer. (b) Harnesses shall be designed and (d) Mouthpieces shall be equipped constructed to permit easy removal with noseclips which are securely at- and replacement of respirator parts, tached to the mouthpiece or respirator and, where applicable, provide for hold- and provide an airtight seal. ing a full facepiece in the ready posi- (e) Facepieces, hoods, and helmets tion when not in use. shall be designed to prevent eyepiece fogging. § 84.1134 Respirator containers; min- (f) Half-mask facepieces shall not imum requirements. interfere with the fit of common indus- (a) Except as provided in paragraph trial safety corrective spectacles, as (b) of this section each respirator shall determined by the Institute’s facepiece be equipped with a substantial, durable tests in §§ 84.1141, 84.1142, and 84.1156(b). container bearing markings which show the applicant’s name, the type of § 84.1136 Facepieces, hoods, and hel- mets; eyepieces; minimum require- respirator it contains, and all appro- ments. priate approval labels. Except for dust, fume, and mist respirators, the com- (a) Facepieces, hoods, and helmets shall be designed and constructed to mercial designation of the respirator it provide adequate vision which is not contains shall be shown. distorted by the eyepieces. (b) Containers for single-use res- (b) All eyepieces of gas masks com- pirators may provide for storage of binations shall be designed and con- more than one respirator, however, structed to be impact and penetration such containers shall be designed and resistant. Federal Specification, Mask, constructed to prevent contamination Air Line: and Respirator, Air Filtering, of respirators which are not removed, Industrial, GGG-M-125d, October 11, and to prevent damage to respirators 1965, with interim amendment-1, July during transit. 30, 1969, is an example of an appropriate (c) Containers for gas masks com- standard for determining impact and binations shall be designed and con- penetration resistance. Copies of GGG- structed to permit easy removal of the M-125d may be obtained from the mask. NIOSH, Certification and Quality As- surance Branch, 1095 Willowdale Road, Morgantown, WV 26505–2888.

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§ 84.1137 Inhalation and exhalation § 84.1141 Isoamyl acetate tightness valves; minimum requirements. test; dust, fume, and mist res- pirators designed for respiratory (a) Inhalation and exhalation valves protection against fumes of various shall be protected against distortion. metals having an air contamination (b) Inhalation valves shall be de- level not less than 0.05 milligram signed and constructed and provided per cubic meter; minimum require- where necessary to prevent excessive ments. exhaled air from adversely affecting (a) The respirator will be modified in filters, cartridges, and canisters, ex- such a manner that all of the air that cept where filters of dust, fume, and normally would be inhaled through the mist respirators are specifically de- inhalation port(s) is drawn through an signed to resist moisture as prescribed efficient activated charcoal-filled can- in § 84.1145. ister, or cartridge(s), without inter- (c) Exhalation valves shall be: ference with the face-contacting por- (1) Provided where necessary; tion of the facepiece. (2) Protected against damage and ex- (b) The modified respirator will be ternal influence; and worn by persons for at least 2 minutes (3) Designed and constructed to pre- each in a test chamber containing 100 vent inward leakage of contaminated parts (by volume) of isoamyl-acetate air. vapor per million parts of air. (c) The odor of isoamyl-acetate shall § 84.1138 Head harnesses; minimum re- not be detected by the wearers of the quirements. modified respirator while in the test (a) All facepieces shall be equipped atmosphere. with head harnesses designed and con- structed to provide adequate tension § 84.1142 Isoamyl acetate tightness test; respirators designed for res- during use and an even distribution of piratory protection against dusts, pressure over the entire area in contact fumes, and mists having an air con- with the face. tamination level less than 0.05 milli- (b) Facepiece head harnesses, except gram per cubic meter, or against those employed on single-use dust, radionuclides; minimum require- fume, and mist respirators, shall be ad- ments. justable and replaceable. (a) The applicant shall provide a (c) Mouthpieces shall be equipped, charcoal-filled canister or cartridge of where applicable, with adjustable and a size and resistance similar to the fil- replaceable harnesses, designed and ter unit with connectors which can be constructed to hold the mouthpiece in attached to the facepiece in the same place. manner as the filter unit. (b)(1) The canister or cartridge will § 84.1139 Air velocity and noise levels; be used in place of the filter unit, and hoods and helmets; minimum re- persons will each wear a modified half- quirements. mask facepiece for 5 minutes in a test Noise levels generated by the res- chamber containing 100 parts (by vol- pirator will be measured inside the ume) of isoamyl-acetate vapor per mil- hood or helmet at maximum airflow lion parts of air. obtainable and shall not exceed 80 dBA. (2) The following work schedule will be performed by each wearer in the test § 84.1140 Dust, fume, and mist res- chamber: pirators; performance require- (i) Two minutes walking, nodding, ments; general. and shaking head in normal move- Dust, fume, and mist respirators and ments; and the individual components of each such (ii) Three minutes exercising and device shall, as appropriate, meet the running in place. requirements for performance and pro- (3) The facepiece shall be capable of tection specified in the tests described adjustment, according to the appli- in §§ 84.1141 through 84.1152 and pre- cant’s instructions, to each wearer’s scribed in Tables 12 and 13. face, and the odor of isoamyl-acetate

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shall not be detectable by any wearer cleaning. The applicant’s instructions during the test. shall be followed for each cleaning. (c) Where the respirator is equipped with a full facepiece, hood, helmet, or § 84.1145 Silica dust test; non-powered mouthpiece, the canister or cartridge single-use dust respirators; min- will be used in place of the filter unit, imum requirements. and persons will each wear the modi- (a) Three respirators will be tested. fied respiratory-inlet covering for 5 (b) As described in § 84.1144, airflow minutes in a test chamber containing will be cycled through the respirator 1,000 parts (by volume) of isoamyl-ace- by a breathing machine at the rate of tate vapor per million parts of air, per- 24 respirations per minute with a forming the work schedule specified in minute volume of 40 liters; a breathing paragraph (b)(2) of this section. machine cam with a work rate of 622 kg.-m.2/minute shall be used. § 84.1143 Dust, fume, and mist air-puri- (c) Air exhaled through the res- fying filter tests; performance re- pirator will be 35° ±2 °C. with 94 ±3 per- quirements; general. cent relative humidity. # Dust, fume, and mist respirators will (d) Air inhaled through the respirator be tested in accordance with the sched- will be sampled and analyzed for res- ule set forth in Table 13 of this subpart pirator leakage. to determine their effectiveness as pro- (e) The total amount of unretained tection against the particulate hazards test suspension, after drying, in sam- specified in Table 13. ples taken during testing, shall not ex- ceed 1.8 milligrams for any single test. § 84.1144 Silica dust test for dust, fume, and mist respirators; single- § 84.1146 Lead fume test for dust, use or reusable filters; minimum re- fume, and mist respirators; min- quirements. imum requirements. (a) Three non-powered respirators (a) Three non-powered respirators with single-use filters will be tested for will be tested for a period of 312 min- periods of 90 minutes each at a contin- utes each at a continuous airflow rate uous airflow rate of 32 liters per of 32 liters per minute. minute. (b) The relative humidity in the test (b) The relative humidity in the test chamber will be 20–80 percent, and the chamber will be 20–80 percent, and the room temperature approximately 25 °C. room temperature approximately 25 °C. (c) The test suspension in the test (c) The test suspension in the cham- chamber will not be less than 15 nor ber will not be less than 50 nor more more than 20 milligrams of freshly gen- than 60 milligrams of flint (99+ percent erated lead-oxide fume, calculated as free silica) per cubic meter of air. lead (Pb), per cubic meter of air. (d) The flint in suspension will be (d) The fume will be generated by im- ground to pass 99+ percent through a pinging an oxygen-gas flame on molten 270-mesh sieve. lead. (e) The particle-size distribution of (e) Samples of the test suspension the test suspension will have a geo- will be taken during each test period metric mean of 0.4 to 0.6 micrometer, for analysis. and the standard geometric deviation (f) The total amount of unretained will not exceed 2. test suspension in the samples taken (f) The total amount of unretained during testing, which is analyzed and test suspension in samples taken dur- calculated as lead (Pb), shall not ex- ing testing shall not exceed 1.5 milli- ceed 1.5 milligrams of lead for a non- grams for a non-powered air-purifying powered air-purifying respirator. respirator. (g) Three non-powered respirators § 84.1147 Silica mist test for dust, with reusable filters will be tested and fume, and mist respirators; min- shall meet the requirements specified imum requirements. in paragraphs (a) through (f) of this (a) Three non-powered respirators section; each filter shall be tested will be tested for a period of 312 min- three times: Once as received; once utes each at a continuous airflow rate after cleaning; and once after re- of 32 liters per minute.

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(b) The room temperature in the test § 84.1148 Tests for respirators de- chamber will be approximately 25°C. signed for respiratory protection (c) The test suspension in the test against more than one type of dis- chamber will not be less than 20 nor persoid; minimum requirements. more than 25 milligrams of silica mist, Respirators designed as respiratory weighed as silica dust, per cubic meter protection against more than one par- of air. ticulate hazard (dust, fume, or mist) (d) Mist will be produced by spraying shall comply with all the requirements an aqueous suspension of flint (99+ per- of this part, with respect to each of the cent free silica), and the flint shall be specific hazards involved. ground to pass 99+ percent through a § 84.1149 Airflow resistance tests; all 270-mesh sieve. dust, fume, and mist respirators; (e) Samples of the test suspension minimum requirements. will be taken during each test period (a) Resistance to airflow will be for analysis. measured in the facepiece, mouthpiece, (f) The total amount of silica mist hood, or helmet of a dust, fume, or unretained in the samples taken during mist respirator mounted on a test fix- testing, weighed as silica dust, shall ture with air flowing at a continuous not exceed 2.5 milligrams for a non- rate of 85 liters per minute, both before powered air-purifying respirator. and after each test conducted in ac- cordance with §§ 84.1144 through 84.1147. (b) The maximum allowable resist- ance requirements for dust, fume, and mist respirators are as follows:

MAXIMUM RESISTANCE [mm. water-column height]

Initial inha- Final inhala- Type of respirator lation tion Exhalation

Pneumoconiosis- and fibrosis-producing dusts, or dusts and mists ...... 12 15 15 Dust, fume, and mist, with single-use filter ...... 30 50 20 Dust, fume, and mist, with reusable filter ...... 20 40 20 Radon daughter ...... 18 1 25 15 Asbestos dust and mist ...... 18 25 15 1 Measured after silica dust test described in § 84.1144.

§ 84.1150 Exhalation valve leakage flow rates of 32 and 85 liters per minute test; minimum requirements. for a period of 5 to 10 seconds. (a) Dry exhalation valves and valve (b) Where filters are to be used in pairs, the flow rates will be 16 and 42.5 seats will be subjected to a suction of liters per minute, respectively, through 25 mm. water-column height while in a each filter. normal operating position. (c) The filter will be mounted on a (b) Leakage between the valve and connector in the same manner as used valve seat shall not exceed 30 milli- on the respirator, and the total leakage liters per minute. for the connector and filter shall not exceed 0.03 percent of the ambient DOP § 84.1151 DOP filter test; respirators concentration at either flow rate. designed as respiratory protection against dusts, fumes, and mists hav- ing an air contamination level less § 84.1152 Silica dust loading test; res- pirators designed as protection than 0.05 milligram per cubic meter against dusts, fumes, and mists hav- and against radionuclides; min- ing an air contamination level less imum requirements. than 0.05 milligram per cubic meter (a) All single air-purifying respirator and against radionuclides; min- filter units will be tested in an atmos- imum requirements. phere concentration of 100 micrograms (a) Three non-powered respirators of DOP per liter of air at continuous will be tested in accordance with the

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provisions of § 84.1144, or equivalent, American National Standards Insti- and shall meet the minimum require- tute, American National Standard for ments of §§ 84.1144 and 84.1149. Identification of Air-Purifying Res- (b) Three powered air-purifying res- pirator Canisters and Cartridges, ANSI pirators will be tested in accordance K13.1–1973. ANSI K13.1 is incorporated with the provisions of § 84.1144 except by reference and has been approved by they will be tested for a period of 4 the Director of the Federal Register in hours each at a flowrate not less than accordance with 5 U.S.C. 552(a) and 1 115 liters per minute to tight-fitting CFR part 51. Copies may be obtained facepieces, and not less than 170 liters from American National Standards In- per minute to loose-fitting hoods and stitute, Inc., 1430 Broadway, New York, helmets. The total amount of NY 10018. Copies may be inspected at unretained test suspension in samples the NIOSH, Certification and Quality taken during testing shall not exceed Assurance Branch, 1095 Willowdale 14.4 milligrams for a powered air-puri- Road, Morgantown, WV 26505–2888, or fying respirator with tight-fitting face- at the National Archives and Records piece, and 21.3 milligrams for a powered Administration (NARA). For informa- air-purifying respirator with loose-fit- tion on the availability of this mate- ting hood or helmet. They shall meet the minimum requirements of § 84.1149. rial at NARA, call 202–741–6030, or go to: http://www.archives.gov/ § 84.1153 Dust, fume, mist, and smoke federallregister/ tests; canister bench tests; gas codeloflfederallregulations/ masks canisters containing filters; ibrllocations.html. minimum requirements. (a) Gas mask canisters containing fil- § 84.1155 Filters used with canisters ters for protection against dusts, and cartridges; location; replace- fumes, mists, and smokes in combina- ment. tion with gases, vapors, or gases and (a) Particulate matter filters used in vapors, will be tested as prescribed in conjunction with a canister or car- § 84.1140 except for the breathing resist- tridge shall be located on the inlet side ance which will be in accordance with of the canister or cartridge. § 84.122. (b) Filters shall be incorporated into (b) Gas mask canisters designed for or firmly attached to the canister or protection against smokes will be test- cartridge and each filter assembly ed in an atmospheric concentration of shall, where applicable, be designed to 100 micrograms of dioctyl phthalate permit its easy removal from and re- per liter of air at continuous flow rates placement on the canister or cartridge. of 32 liters per minute and 85 liters per minute for a period of 5 to 10 seconds, § 84.1156 Pesticide respirators; per- and the DOP leakage through the can- formance requirements; general. ister shall not exceed 0.03 percent of Pesticide respirators and the indi- the test concentration. vidual components of each such device (c) Gas mask canisters containing fil- ters for protection against dusts, shall, as appropriate, meet the fol- fumes, mists, and smokes in combina- lowing minimum requirements for per- tion with gases, vapors, or gases and formance and protection: vapors, will be tested as prescribed in (a) Breathing resistance test. (1) Air- § 84.126. flow resistance will be measured in the facepiece, mouthpiece, hood, or helmet § 84.1154 Canister and cartridge re- of a pesticide respirator mounted on a quirements. test fixture with air flowing at a con- (a) Where two or more canisters or tinuous rate of 85 liters per minute, cartridges are used in parallel, their re- both before and after each test con- sistance to airflow shall be essentially ducted in accordance with paragraphs equal. (c) and (f) of this section. (b) The color and markings of all can- (2) The maximum allowable resist- isters and cartridges or labels shall ance requirements for pesticide res- conform with the requirements of the pirators are as follows:

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MAXIMUM RESISTANCE [mm. water-column height]

Inhalation Type of pesticide respirator Exhalation Initial Final 1

Front- or back-mounted gas mask ...... 70 85 20 Chin-style gas mask ...... 65 80 20 Powered air-purifying 2 ...... 2 50 2 70 20 Chemical Cartridge ...... 50 70 20 1 Measured at end of the service life specified in Table 14 of this subpart. 2 Resistance of filter(s), cartridge(s), and breathing tube(s) only with blower not operating.

(b) Facepiece test. (1) The complete (c) Silica dust test. Three completely pesticide respirator will be fitted to assembled pesticide respirators will be the faces of persons having varying fa- tested with a mechanical-testing appa- cial shapes and sizes. ratus as follows: (2) Where the applicant specifies a (1) Temperature in the test chamber facepiece size or sizes for his respirator will be approximately 25 °C. together with the approximate meas- (2) Continuous airflow through the urements of faces they are designed to respirator will be 32 liters per minute fit, the Institute will provide test sub- for front-mounted, back-mounted, and jects to suit such facial measurements. chin-style gas mask pesticide res- (3) Any pesticide respirator part pirators and chemical cartridge pes- which must be removed to perform the ticide respirators, and not less than 115 facepiece fit test shall be replaceable (4 cubic feet) liters per minute to tight- without special tools and without dis- fitting facepieces and 170 liters (6 cubic turbing facepiece fit. feet) per minute to loose-fitting hoods (4) The facepiece or mouthpiece fit and helmets of powered air-purifying test using positive or negative pressure respirators. recommended by the applicant and de- (3) The test aerosol will contain 50–60 scribed in his instructions will be used milligrams of 99+ percent free silica during each test. per cubic meter of air. (4) The particle size distribution of (5)(i) Each wearer will enter a cham- the test suspension will have a geo- ber containing 1,000 p.p.m. isoamyl-ace- metric mean diameter of 0.4 to 0.6 mi- tate vapor for a respirator equipped crometer, with a standard geometric with a full facepiece, mouthpiece, deviation less than 2. hood, or helmet and 100 p.p.m. isoamyl- (5) Front-mounted, back-mounted, acetate vapor for a respirator equipped and chin-style gas mask pesticide res- with a half-mask facepiece. pirators and chemical cartridge pes- (ii) The facepiece, mouthpiece, hood, ticide respirators will be tested for 90 or helmet may be adjusted, if nec- minutes and powered air-purifying res- essary, in the test chamber before pirators will be tested for 4 hours. starting the test. (d) Lead fume test. Three completely (iii) Each wearer will remain in the assembled pesticide respirators will be chamber while performing the fol- tested with a mechanical-testing appa- lowing activities: ratus as follows: (A) Two minutes, nodding and turn- (1) Continuous airflow through the ing head; respirator will be 32 liters per minute (B) Two minutes, calisthenic arm for front-mounted, back-mounted, and movements; chin-style gas mask pesticide res- (C) Two minutes, running in place; pirators and chemical cartridge pes- and ticide respirators and not less than 115 (D) Two minutes, pumping with a liters (4 cubic feet) per minute, for tire pump into a 28-liter (1 cubic foot) powered air-purifying respirators with container. tight-fitting facepieces, and not less (iv) Each wearer shall not detect the than 170 liters (6 cubic feet) per minute odor of isoamyl-acetate during the for powered air-purifying respirators test. with loose-fitting hoods and helmets.

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(2) The test aerosol will contain 15–20 (iv) Two canisters, cartridges, or milligrams of freshly generated lead- pairs of cartridges will be equilibrated oxide fume, calculated as lead, per at room temperature by passing 25 per- cubic meter of air. cent relative humidity air through (3) The fume will be generated by im- them at the following flow rates (ex- pinging an oxygen-gas flame on molten pressed as liters per minute (l.p.m.)) lead. for 6 hours: (4) Front-mounted, back-mounted, and chin-style gas mask pesticide res- Airflow Type of canister or cartridge rate, pirators and chemical cartridge pes- l.p.m. ticide respirators will be tested for 90 minutes and powered air-purifying pes- Air-purifying canister ...... 64 ticide respirators will be tested for 4 Air-purifying cartridge ...... 25 hours. Powered air-purifying with tight-fitting facepiece ... 115 Powered air-purifying with loose-fitting hood or (5) The total amount of unretained helmet ...... 170 test suspension, which is analyzed and calculated as lead, shall not exceed: (v) Two canisters, cartridges, or pairs (i) 0.43 milligram for any 90-minute of cartridges will be equilibrated at test; room temperature by passing 85 per- (ii) 4.8 milligrams for any 4-hour test cent relative humidity air through made at 115 liters (4 cubic feet) per them at the flow rates stated in para- minute; or graph (f)(1)(iv) of this section for 6 (iii) 6.2 milligrams for any 4-hour test hours. made at 170 liters (6 cubic feet) per minute. (vi) The equilibrated canisters or car- (e) Dioctyl-phthalate test. (1) All can- tridges will be resealed, kept in an up- isters submitted for use with front- right position at room temperature, mounted and back-mounted gas mask and tested within 18 hours. pesticide respirators will be tested in (2) Canisters and cartridges tested in an atmospheric concentration of 100 accordance with the provisions of this micrograms of dioctyl-phthalate per section shall meet the requirements liter of air at continuous flow rates of specified in Table 14 of this subpart. 32 and 85 liters per minute for a test pe- riod of 5 to 10 seconds. § 84.1157 Chemical cartridge res- (2) The DOP leakage through the can- pirators with particulate filters; ister shall not exceed 0.03 percent of performance requirements; general. the ambient DOP concentration. Chemical cartridge respirators with (f) Bench tests for pesticide respirators. particulate filters and the individual (1)(i) Bench tests will be made on an components of each such device shall, apparatus that allows the test atmos- as appropriate, meet the following ± phere at 50 5 percent relative humid- minimum requirements for perform- ity and at room temperature (25°±2.5 ance and protection: °C.) to enter the canister or cartridge at predetermined concentrations and (a) Breathing resistance test. (1) Resist- rates of flow, and that has a means for ance to airflow will be measured in the determining the test life of the can- facepiece, mouthpiece, hood, or helmet ister or cartridge against carbon tetra- of a chemical cartridge respirator chloride. mounted on a test fixture with air (ii) Canisters and cartridges will be flowing at a continuous rate of 85 liters tested as they are used on each pes- per minute, both before and after each ticide respirator, either singly or in test conducted in accordance with pairs. paragraphs (d) through (f) of this sec- (iii) Three canisters or cartridges or tion. pairs of cartridges will be removed (2) The maximum allowable resist- from containers and tested as received ance requirements for chemical car- from the applicant. tridge respirators are as follows:

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MAXIMUM RESISTANCE [mm. water-column height]

Inhalation Type of chemical cartridge respirator Exhalation Initial Final 1

For gases, vapors, or gases and vapors, and dusts, fumes, and mists ...... 50 70 20 For gases, vapors, or gases and vapors, and mists of paints, lacquers, and enamels 50 70 20 1 Measured at end of service life specified in Table 11 in subpart L of this part.

(b) Facepiece test. The facepiece test (7) The test aerosol will be drawn to will be conducted as specified in each respirator for a total of 156 min- § 84.205. utes for air-purifying respirators and (c) Lacquer and enamel mist tests; gen- 240 minutes for powered air-purifying eral. (1) Three respirators with car- respirators. tridges containing or having attached (8) The total amount of unretained to them, filters for protection against mist in the samples taken during test- mists of paints, lacquers, and enamels ing, weighed as cellulose nitrate, shall shall be tested in accordance with the not exceed 5 milligrams for an air-puri- provisions of paragraph (f) of this sec- fying respirator, 28 milligrams for a tion. powered air-purifying respirator with (2) In addition to the test require- tight-fitting facepiece, and 41 milli- ments set forth in paragraph (c)(1) of grams for a powered air-purifying res- this section, three such respirators will pirator with loose-fitting hood or hel- be tested against each aerosol in ac- met. cordance with the provisions of para- (e) Enamel mist test. (1) Temperature graphs (d) and (e) of this section. in the test chamber will be approxi- (d) Lacquer mist test. (1) Temperature mately 25 °C. in the test chamber will be approxi- (2) Continuous airflow through the mately 25 °C. respirator will be 32 liters per minute (2) Continuous airflow through the for air-purifying respirators, and not respirator will be 32 liters per minute less than 115 liters per minute to tight- for air-purifying respirators, and not fitting facepieces and 170 liters per less than 115 liters per minute to tight minute to loose-fitting hoods and hel- fitting facepieces and 170 liters per minute to loose-fitting hoods and hel- mets of powered air-purifying res- mets of powered air-purifying res- pirators. pirators. (3) Airflow through the chamber will (3) Airflow through the chamber will be 20–25 air changes per minute. be 20–25 air changes per minute. (4) The atomizer employed will be a (4) The atomizer employed will be a No. 64 nozzle with setup 1A, or equiva- 2 No. 64–5 nozzle with setup 3, or equiva- lent, operating at 69 kN/m. (10 pounds lent, operating at 69 kN/m.2 (10 pounds per square inch gage). per square inch gage). (5) The test aerosol will be prepared (5) The test aerosol will be prepared by atomizing a mixture of 1 volume of by atomizing a mixture of one volume enamel and 1 volume of turpen- of clear cellulose nitrate lacquer and tine. The enamel described in Federal one volume of lacquer thinner. The lac- Specification TT-E–489b, May 12, 1953, quer described in Federal Specification with amendment-1 of 9 November 1955 TT-L-31, October 7, 1953, is an example is an example of an acceptable enamel. of an acceptable lacquer. Copies of TT- Copies of TT-E–489b may be inspected L-31 may be inspected or obtained from or obtained from the NIOSH, Certifi- the NIOSH, Certification and Quality cation and Quality Assurance Branch, Assurance Branch, 1095 Willowdale 1095 Willowdale Road, Morgantown, WV Road, Morgantown, WV 26505–2888. 26505–2888. (6) The concentration of cellulose ni- (6) The concentration of in trate in the test aerosol will be 95–125 the test aerosol, weighed as ash, will be milligrams per cubic meter. 95–125 milligrams per cubic meter.

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(7) The test aerosol will be drawn to (ii) Two powered air-purifying car- each respirator for a total of 156 min- tridges or pairs of cartridges will be utes for air-purifying respirators and equilibrated by passing 85 percent rel- 240 minutes for power air-purifying res- ative humidity air through them at the pirators. flow rates stated in paragraph (f)(2)(i) (8) The total amount of unretained of this section. mist in the samples taken during test- (iii) All cartridges will be resealed, ing, weighed as ash, shall not exceed 1.5 kept in an upright position, at room milligrams for any air-purifying res- temperatures, and tested within 18 pirator, 8.3 milligrams for a powered hours. air-purifying respirator with tight-fit- ting facepiece, and 12.3 milligrams for § 84.1158 Dust, fume, and mist tests; a powered air-purifying respirator with respirators with filters; minimum loose-fitting hood or helmet. requirements; general. (f) Bench tests; gas and vapor tests. (1) Bench tests will be made in accordance (a) Three respirators with cartridges with § 84.207 and tested cartridges shall containing, or having attached to meet the minimum requirements set them, filters for protection against forth in Table 11 of subpart L of this dusts, fumes, and mists, except the part. Cartridges will be equilibrated in mists of paints, lacquers, and enamels, accordance with paragraph (f)(2) of this will be tested in accordance with the section. provisions of § 84.1157(f). (2)(i) Two powered air-purifying car- (b) In addition to the test require- tridges or pairs of cartridges will be ments set forth in paragraph (a) of this equilibrated at room temperature by section, three such respirators will be passing 25 percent relative humidity tested, as appropriate, in accordance air through them at the following flow with the provisions of §§ 84.1141 through rates (expressed in liters per minute 84.1152; however, the maximum allow- (l.p.m.)) for 6 hours: able resistance of complete dust, fume, and mist, and gas, vapor, or gas and Airflow Type of cartridge rate, vapor chemical cartridge respirators l.p.m. shall not exceed the maximum allow- Powered air purifying with tight-fitting facepiece ... 115 able limits set forth in § 84.1157(a)(2). Powered air purifying with loose-fitting hood or helmet ...... 170

TABLES TO SUBPART KK OF PART 84

TABLE 12—FACEPIECE TEST REQUIREMENTS [42 CFR Part 84, Subpart KK]

Pressure Isoamyl acetate test Respirator types tightness test 1 84.1141 84.1142

Dusts: Air Contamination Level not less than 0.05 mg/M3 or 2 mppcf ...... X Fumes: Air Contamination Level not less than 0.05 mg/M3 ...... X X Mists: Air Contamination Level not less than 0.05 mg/M3 or 2 mppcf ...... X Dusts, Fumes, and Mists: Air Contamination Level less than 0.05 mg/M3 or 2 mppcf, and radionuclides ...... X X Radon daughters ...... X X Asbestos-containing dusts and mists ...... X 1 Test is required only where applicable.

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TABLE 13—AIR-PURIFYING AND POWERED AIR-PURIFYING RESPIRATOR FILTER TESTS REQUIRED FOR APPROVAL [42 CFR Part 84, Subpart KK]

Silica dust tests Respirator types Lead fume Silica mist DOP test 84.1144 84.1145 84.1152 test 84.1146 test 84.1147 84.1151

Dusts: Air Contamination Level not less than 0.05 mg/M3 or 2 mppcf ...... X Fumes: Air Contamination Level not less than 0.05 mg/M3 ...... X Mists: Air Contamination Level not less than 0.05 mg/M3 or 2 mppcf ...... X Dusts, Fumes, and Mists: Air Contami- nation Level less than 0.05 mg/M3 or 2 mppcf, and radionuclides ...... X X Radon daughters ...... 1 X 2 X Asbestos-containing dusts and mists ... 2 X 3 X Single use dust and mist respirators .... 3 X 3 X 1 For resistance only. 2 For penetration only. 3 Test required only where applicable.

TABLE 14—CARBON TETRACHLORIDE BENCH TESTS AND REQUIREMENTS FOR CANISTERS AND CARTRIDGES [42 CFR part 84, Subpart KK]

Test con- Minimum Type of pesticide respirator centration Flow rate Number of life min- l.p.m. tests 1 p.p.m. CCl4 utes

Chest-mounted or back-mounted gas mask (as received) ...... 20,000 64 3 12 Chest-mounted or back-mounted gas mask (equilibrated) ...... 20,000 32 4 12 Chin-style gas mask (as received) ...... 5,000 64 3 12 Chin-style gas mask (equilibrated) ...... 5,000 32 4 12 Chemical Cartridge respirator (as received) ...... 1,000 64 3 50 Chemical cartridge respirator (equilibrated) ...... 1,000 32 4 50 Powered air-purifying respirator (tight-fitting facepiece, as received) .. 1,000 2 115 3 50 Powered air-purifying respirator (tight-fitting facepiece, equilibrated) .. 1,000 2 115 4 25 Powered air-purifying respirator (loose-fitting hood or helmet, as re- ceived) ...... 1,000 3 170 3 50 Powered air-purifying respirator (loose-fitting hood or helmet, equili- brated) ...... 1,000 3 170 4 25 1 Minimum life will be determined at 5 p.p.m. leakage. 2 The flow rate shall be the effective flow rate of the device, but shall be not less than 115 l.p.m. 3 The flow rate shall be the effective flow rate of the device, but shall be not less than 170 l.p.m.

PART 85—REQUESTS FOR HEALTH 85.11 Notification of determination to em- ployers, affected employees, and Depart- HAZARD EVALUATIONS ment of Labor. 85.12 Subsequent requests for health hazard Sec. evaluations. 85.1 Applicability. 85.2 Definitions. AUTHORITY: Sec. 8(g), 84 Stat. 1600; 29 U.S.C. 657(g) and sec. 508, 83 Stat. 803; 30 85.3 Procedures for requesting health haz- U.S.C. 957. ard evaluations. 85.3–1 Contents of a request for health haz- SOURCE: 37 FR 23640, Nov. 7, 1972, unless ard evaluations. otherwise noted. 85.4 Acting on requests. 85.5 Authority for investigations. § 85.1 Applicability. 85.6 Advance notice of visits. This part 85 applies to health hazard 85.7 Conduct of investigations. evaluations requested by any employer 85.8 Provision of suitable space for em- ployee interviews and examinations; or authorized representative of em- identification of employees. ployees under section 20(a)(6) of the Oc- 85.9 Representatives of employers and em- cupational Safety and Health Act of ployees; employee requests. 1970 or section 501(a)(11) of the Federal 85.10 Imminent dangers. Mine Safety and Health Act of 1977.

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