Pt. 82, Subpt. F, App. A 40 CFR Ch. I (7–1–14 Edition) 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 Refrigerants 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 Refrigeration 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. Particulates/solids 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, refrigerant 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 1130 VerDate Sep<11>2014 12:39 Sep 30, 2014 Jkt 232166 PO 00000 Frm 01140 Fmt 8010 Sfmt 8002 Q:\40\40V18.TXT 31 Environmental Protection Agency Pt. 82, Subpt. F, App. A 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 room temperature, 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 liquid 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 mercury (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 acid 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 Turbidity. 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- acids; however these acids will be found in scribed in Appendix C to ARI Standard 700– the high boiling residue test outlined in 5.7.