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remand to the Presiding Officer for ad- is mandatory if compliance with the appen- ditional proceedings. The decision by dix is claimed. the Administrator or her or his des- 3.1.2 Should, Recommended, or It is Rec- ignated representative shall include ommended. ‘‘Should’’, ‘‘recommended’’, or ‘‘it is recommended’’ is used to indicate provi- written findings and conclusions and sions which are not mandatory but which are the reasons or basis therefore on all desirable as good practice. the material issues of fact, law, or dis- cretion presented on the appeal or con- Section 4. Characterization of and sidered in the review. Contaminants [68 FR 43809, July 24, 2003] 4.1 Characterization. Characterization of refrigerants and contaminants addressed are listed in the following general classifica- APPENDIX A TO SUBPART F OF PART 82— tions: SPECIFICATIONS FOR FLUOROCARBON 4.1.1 Characterization AND OTHER REFRIGERANTS a. Gas Chromatography This appendix is based on the Air-Condi- b. Boiling point and boiling point range tioning and Institute Standard 4.1.2 Contaminants 700–1995. a. Water b. Chloride Section 1. Purpose c. Acidity d. High boiling residue 1.1 Purpose. The purpose of this standard e. / is to evaluate and accept/reject refrigerants f. Non-condensables regardless of source (i.e., new, reclaimed and/ or repackaged) for use in new and existing g. Impurities including other refrigerants refrigeration and air-conditioning products Section 5. Sampling, Summary of Test Methods as required under 40 CFR part 82. and Maximum Permissible Contaminant Levels 1.1.1 Intent. This standard is intended for the guidance of the industry including manu- 5.1 Referee Test. The referee test methods facturers, reclaimers, repack- for the various contaminants are summa- agers, distributors, installers, servicemen, rized in the following paragraphs. Detailed contractors and for consumers. test procedures are included in Appendix C to 1.1.2 Review and Amendment. This standard ARI Standard 700–1995: Analytical Procedures is subject to review and amendment as the for ARI Standard 700–1995, 1995, Air-Condi- technology advances. tioning and Refrigeration Institute. Appendix C to ARI Standard 700–1995 is incorporated by Section 2. Scope reference. [This incorporation by reference was approved by the Director of the Federal 2.1 Scope. This standard specifies accept- Register in accordance with 5 U.S.C. 552(a) able levels of contaminants (purity require- and 1 CFR part 51. Copies may be obtained ments) for various fluorocarbon and other re- from the Air-Conditioning and Refrigeration frigerants regardless of source and lists ac- Institute, 4301 North Fairfax Drive, Arling- ceptable test methods. These refrigerants are ton, Virginia 22203. Copies may also be in- R–113; R–123; R–11; R–114; R–124; R–12; R–401C; spected at Public Docket No. A–92–01, Envi- R–406A; R–500; R–401A; R–409A; R–401B; R– ronmental Protection Agency, 1301 Constitu- 411A; R–22; R–411B; R–502; R–402B; R–408A; R– tion Ave., NW., Washington, DC, 20460 or at 402A; R–13; R–503 as referenced in the ANSI/ the Office of the Federal Register, 800 North ASHRAE Standard 34–1992. (American Soci- Capitol Street, NW., Suite 700, Washington, ety of Heating, Refrigerating and Air-condi- DC.] If alternative test methods are em- tioning Engineers, Inc., Standard 34–1992). ployed, the user must be able to demonstrate Copies may be obtained from ASHRAE Pub- that they produce results equivalent to the lications Sales, 1791 Tullie Circle, NE, At- specified referee method. lanta, GA 30329. Copies may also be inspected 5.2 Refrigerant Sampling at Environmental Protection Agency; Office 5.2.1 Sampling Precautions. Special pre- of Air and Radiation Docket; 1301 Constitu- cautions should be taken to assure that rep- tion Ave., NW., Room B108; Washington, DC resentative samples are obtained for anal- 20460. ysis. Sampling shall be done by trained lab- Section 3. Definitions oratory personnel following accepted sam- pling and safety procedures. 3.1 ‘‘Shall,’’ ‘‘Should,’’ ‘‘Recommended,’’ or 5.2.2 Gas Phase Sample. A gas phase sample ‘‘It Is Recommended.’’ ‘‘Shall,’’ ‘‘should,’’ shall be obtained for determining the non- ‘‘recommended,’’ or ‘‘it is recommended’’ condensables. Since non-condensable gases, shall be interpreted as follows: if present, will concentrate in the vapor 3.1.1 Shall. Where ‘‘shall’’ or ‘‘shall not’’ is phase of the refrigerant, care must be exer- used for a provision specified, that provision cised to eliminate introduction of air during

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the sample transfer. Purging is not an ac- frigerants,’’ BB–F–1421 B, dated March 5, ceptable procedure for a gas phase sample 1982, section 4.4.3. since it may introduce a foreign product. 5.3.3 Required Values. The required values Since R–11, R–113, and R–123 have normal for boiling point and boiling point range are boiling points at or above , given in Table 1A, Physical Properties of Sin- non-condensable determination is not re- gle Component Refrigerants; Table 1B, Physical quired for these refrigerants. Properties of Zeotropic Blends (400 Series Re- 5.2.2.1 Connection. The sample cylinder frigerants); and Table 1C, Physical Properties shall be connected to an evacuated gas sam- of Azeotropic Blends (500 Series Refrigerants). pling bulb by means of a manifold. The mani- 5.4 Water Content. fold should have a valve arrangement that 5.4.1 Method. The Coulometric Karl Fisch- facilitates evacuation of all connecting tub- er Titration shall be the primary test meth- ing leading to the sampling bulb. od for determining the water content of re- 5.2.2.2 Equalizing Pressures. After the frigerants. This method is described in Ap- manifold has been evacuated, close the valve pendix C to ARI Standard 700–1995. This meth- to the pump and open the valve on the sys- od can be used for refrigerants that are ei- tem. Allow the pressure to equilibrate and ther a or a gas at room temperature, close valves. including refrigerants 11, 113, and 123. For all 5.2.3 Liquid Phase Sample. A liquid phase refrigerants, the sample for water analysis sample is required for all tests listed in this shall be taken from the liquid phase of the standard except the test for non- container to be tested. Proper operation of condensables. the analytical method requires special equip- 5.2.3.1 Preparation. Place a clean, empty ment and an experienced operator. The pre- sample cylinder with the valve open in an cision of the results is excellent if proper oven at 110 °C (230 °F) for one hour. Remove sampling and handling procedures are fol- it from the oven while hot, immediately con- lowed. Refrigerants containing a colored dye nect to an evacuation system and evacuate can be successfully analyzed for water using to less than 1 mm (1000 microns). this method. Close the valve and allow it to cool. Weigh 5.4.2 Limits. The value for water content the empty cylinder. shall be expressed as parts per million (ppm) 5.2.3.2 Manifolding. The valve and lines by weight and shall not exceed the maximum from the unit to be sampled shall be clean specified (see Tables 1A, 1B, and 1C). and dry. The cylinder shall be connected to 5.5 Chloride. an evacuated gas sampling cylinder by The refrigerant shall be tested for chloride means of a manifold. The manifold should as an indication of the presence of hydro- have a valve arrangement that facilitates chloric and/or metal chlorides. The rec- evacuation of all connecting tubing leading ommended procedure is intended for use with to the sampling cylinder. new or reclaimed refrigerants. Significant 5.2.3.3 Liquid Sampling. After the manifold amounts of oil may interfere with the results has been evacuated, close the valve to the by indicating a failure in the absence of pump and open the valve on the system. chloride. Take the sample as a liquid by chilling the 5.5.1 Method. The test method shall be sample cylinder slightly. Accurate analysis that described in Appendix C to ARI Standard requires that the sample container be filled 700–1995. The test will show noticeable tur- to at least 60% by volume, however under no bidity at chloride levels of about 3 ppm by circumstances should the cylinder be filled weight or higher. to more than 80% by volume. This can be ac- 5.5.2 . The results of the test complished by weighing the empty cylinder shall not exhibit any sign of turbidity. Re- and then the cylinder with refrigerant. When port the results as ‘‘pass’’ or ‘‘fail.’’ the desired amount of refrigerant has been 5.6 Acidity. collected, close the valve(s) and disconnect 5.6.1 Method. The acidity test uses the ti- the sample cylinder immediately. tration principle to detect any compound 5.2.3.4 Record Weight. Check the sample that is highly soluble in water and ionizes as cylinder for leaks and record the gross an acid. The test method shall be that de- weight. scribed in Appendix C to ARI Standard 700– 5.3 Refrigerant Characterization. 1995. This test may not be suitable for deter- 5.3.1 Primary Method. The primary method mination of high molecular weight organic shall be gas chromatography (GC) as de- ; however these acids will be found in scribed in Appendix C to ARI Standard 700– the high boiling residue test outlined in 5.7. 1995. The chromatogram of the sample shall The test requires a 100 to 120 gram sample be compared to known standards. and has a detection limit of 0.1 ppm by 5.3.2 Alternative Method. Determination of weight calculated as HCl. the boiling point and boiling point range is 5.6.2 Limits. The maximum permissible an acceptable alternative test method which acidity is 1 ppm by weight as HCl. can be used to characterize refrigerants. The 5.7 High Boiling Residue. test method shall be that described in the 5.7.1 Method. High boiling residue shall be Federal Specification for ‘‘Fluorocarbon Re- determined by measuring the residue of a

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standard volume of refrigerant after evapo- phase contaminant. The presence of non-con- ration. The refrigerant sample shall be evap- densable gases may reflect poor quality con- orated at room temperature or at a tempera- trol in transferring refrigerants to storage ture 45 °C (115 °F) for all refrigerants, except tanks and cylinders. R–113 which shall be evaporated at 60 °C (140 5.9.2 Method. The test method shall be gas °F), using a Goetz bulb as specified in Appen- chromatography with a thermal conduc- dix C to ARI Standard 700–1995. Oils and/or or- tivity detector as described in Appendix C to ganic acids will be captured by this method. ARI Standard 700–1995. 5.7.2 Limits. The value for high boiling res- 5.9.3 Limit. The maximum level of non- idue shall be expressed as a percentage by condensables in the vapor phase of a refrig- volume and shall not exceed the maximum erant in a container shall not exceed 1.5% by percent specified (see Tables 1A, 1B, and 1C). volume (see Tables 1A, 1B, and 1C). An alternative gravimetric method is de- 5.10 Impurities, including Other Refrig- scribed in Appendix C to ARI Standard 700– erants. 1995. 5.10.1 Method. The amount of other impu- 5.8 Method of Tests for Particulates and Sol- rities including other refrigerants in the sub- ids. ject refrigerant shall be determined by gas 5.8.1 Method. A measured amount of sam- chromatography as described in Appendix C ple is evaporated from a Goetz bulb under to ARI Standard 700–1995. controlled temperature conditions. The par- ticulates/solids shall be determined by visual 5.10.2 Limit. The subject refrigerant shall examination of the Goetz bulb prior to the not contain more than 0.5% by weight of im- evaporation of refrigerant. Presence of dirt, purities including other refrigerants (see Ta- rust or other particulate contamination is bles 1A, 1B, and 1C). reported as ‘‘fail.’’ For details of this test Section 6. Reporting Procedure method, refer to Part 3 of Appendix C to ARI Standard 700–1995. 6.1 Reporting Procedure. The source (manu- 5.9 Non-Condensables. facturer, reclaimer or repackager) of the 5.9.1 Sample. A vapor phase sample shall packaged refrigerant shall be identified. The be used for determination of non- refrigerant shall be identified by its accepted condensables. Non-condensable gases consist refrigerant number and/or its chemical primarily of air accumulated in the vapor name. Maximum permissible levels of con- phase of refrigerants. The solubility of air in taminants are shown in Tables 1A, 1B, and the refrigerants liquid phase is extremely 1C. Test results shall be tabulated in a like low and air is not significant as a liquid manner.

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APPENDIX A. REFERENCES—NORMATIVE ASHRAE Standard 34–1992, Number Designa- tion and Safety Classification of Refrigerants, Listed here are all standards, handbooks, American Society of Heating Refrigeration and other publications essential to the for- and Air-Conditioning Engineers, 1992, 1791 mation and implementation of the standard. Tullie Circle NE., Atlanta, GA 30329–2305; All references in this appendix are consid- U.S.A. ered as part of this standard. Appendix C to ARI Standard 700–1995: Ana- ASHRAE Terminology of Heating, Ven- lytical Procedures to ARI Standard 700–1995, tilating, and Refrigeration, Specifications for Fluorocarbon and Other Re- American Society of Heating Refrigeration frigerants, Air-Conditioning and Refrigera- and Air-Conditioning Engineers, 1992, 1791 tion Institute, 1995, 4301 North Fairfax Drive, Tullie Circle NE., Atlanta, GA 30329–2305; Suite 425, Arlington, VA 22203; U.S.A. U.S.A. Federal Specification for Fluorocarbon Re- frigerants, BB–F–1421–B, dated March 5, 1992,

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Office of the Federal Register, National Ar- distributors, installers, servicemen, contrac- chives and Records Administration, 1992, 800 tors and for consumers. North Capitol Street, NW., Washington, D.C. 1.1.2 This standard is not intended to be 20402; U.S.A. used as a guide in defining maximum levels [69 FR 11981, Mar. 12, 2004] of contaminants in recycled or reclaimed re- frigerants used in various applications. APPENDIX A1 TO SUBPART F OF PART 1.2 Review and Amendment. This standard is subject to review and amendment as the 82—GENERIC MAXIMUM CONTAMI- technology advances. NANT LEVELS Section 2. Scope Contaminant Reporting units 2.1 Scope. This standard defines general ° Air and Other Non- 1.5% by volume @ 25 C (N/ equipment requirements and the test appa- condensables. A for refrigerants used in ratus, test , sampling and analysis low-pressure appliances 1). Water ...... 10 ppm by weight 20 ppm by techniques that will be used to determine weight (for refrigerants the performance of recovery and/or used in low-pressure appli- equipment for various refrigerants including ances 1). R11, R12, R13, R22, R113, R114, R123, R134a, Other Impurities Including Re- 0.50% by weight. R500, R502, and R503, as referenced in the frigerant. ANSI/ASHRAE Standard 34–1992, ‘‘Number High boiling residue ...... 0.01% by volume. Particulates/solids ...... visually clean to pass. Designation of Refrigerants’’ (American So- Acidity ...... 1.0 ppm by weight. ciety of Heating, Refrigerating, and Air Con- Chlorides (chloride level for No visible turbidity. ditioning Engineers, Inc.). pass/fail is 3ppm). Section 3. Definitions 1 Low-pressure appliances means an appliance that uses a refrigerant with a liquid phase saturation pressure below 45 3.1 Recovered refrigerant. Refrigerant that psia at 104 °F. has been removed from a system for the pur- pose of storage, recycling, reclamation or BLEND COMPOSITIONS (WHERE APPLICABLE) transportation. Nominal Allowable 3.2 Recover. Reference 40 CFR 82.152. composition composition 3.3 Recycle. Reference 40 CFR 82.152. (by weight%) (by weight%) 3.4 Reclaim. Reference 40 CFR 82.152. Component constitutes 25% or more ...... ±2.0 3.5 Standard Contaminated Refrigerant Sam- Component constitutes less than 25% but ple. A of new and/or reclaimed re- greater than 10% ...... ±1.0 frigerant and specified quantities of identi- Component constitutes less than or equal to fied contaminants which are representative ± 10% ...... 0.5 of field obtained, used refrigerant samples and which constitute the mixture to be proc- [69 FR 11988, Mar. 12, 2004] essed by the equipment under test. 3.6 Push/Pull Method. The push/pull refrig- APPENDIX B1 TO SUBPART F OF PART erant recovery method is defined as the proc- 82—PERFORMANCE OF REFRIGERANT ess of transferring liquid refrigerant from a RECOVERY, RECYCLING AND/OR RE- refrigeration system to a receiving vessel by CLAIM EQUIPMENT lowering the pressure in the vessel and rais- ing the pressure in the system, and by con- This appendix is based on the Air-Condi- necting a separate line between the system tioning and Refrigeration Institute Standard liquid port and the receiving vessel. 740–1993. 3.7 Recycle Rate. The amount of refrig- erant processed (in pounds) divided by the REFRIGERANT RECOVERY/RECYCLING time elapsed in the recycling mode in pounds EQUIPMENT per minute. For equipment which uses a sep- arate recycling sequence, the recycle rate Section 1. Purpose does not include the recovery rate (or 1.1 Purpose. The purpose of this standard elapsed time). For equipment which does not is to establish methods of testing for rating use a separate recycling sequence, the recy- and evaluating the performance of refrig- cle rate is a maximum rate based solely on erant recovery, and/or recycling equipment, the higher of the liquid or vapor recovery and general equipment requirements (herein rate, by which the rated contaminant levels referred to as ‘‘equipment’’) for containment can be achieved. or purity levels, capacity, speed, and purge 3.8 Equipment Classification. loss to minimize emission into the atmos- 3.8.1 Self Contained Equipment. A refrig- phere of designated refrigerants. erant recovery or recycling system which is 1.1.1 This standard is intended for the capable of refrigerant extraction without the guidance of the industry, including manufac- assistance of components contained within turers, refrigerant reclaimers, repackers, an air conditioning or refrigeration system.

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