1、Designation: D7122 17Standard Specification forHCFC Blend B (CF3CCl2H, Ar, and CF4)1This standard is issued under the fixed designation D7122; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in p
2、arentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers requirements for HCFC BlendB as a fire-fighting medium.1.2 This specification does not address the fire-fightingequipmen
3、t or hardware that employs HCFC Blend B or theconditions of employing such equipment (for example,handhelds, fixed installations, etc.).1.3 This specification does not address the storage ortransportation of HCFC Blend B. Storage, handling, andtransportation issues are addressed in Practice D7123.1.
4、4 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 The following safety hazards caveat pertains only to thetest methods portion, Secti
5、on 6, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior
6、to use. Specific hazards statements are given in 4.5.2. Referenced Documents2.1 ASTM Standards:2D6806 Practice for Analysis of Halogenated Organic Sol-vents and Their Admixtures by Gas ChromatographyD7123 Practice for Handling, Transportation, and Storage ofHCFC Blend B (CF3CCl2H, Ar, and CF4)2.2 IS
7、O Standard:3ISO 3427 Gaseous Halogenated Hydrocarbons (LiquefiedGases)Taking of a Sample2.3 ASHRAE Standard:4ASHRAE 34 Designation and Safety Classification of Re-frigerants2.4 U.S. Government Standard:5CFR Title 49, Part 172, Subpart D, U.S. Department ofTransportation (DOT), Marking Requirements o
8、f Packag-ing for Transportation2.5 AHRI Standard:62008 Appendix C Analytical Procedures for AHRI Standard700-20143. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 HCFChydrochlorofluorocarbon; a chemical com-pound in which the compound molecule is comprised exclu-sively of hydrog
9、en, chlorine, fluorine and carbon atoms.3.1.2 HCFC Blend Btertiary blend comprised primarily ofHCFC-123 (2,2-dichloro-1,1,1-trifluoroethane); a compoundused to inert, extinguish, or suppress a fire or explosion hazard.The blend also contains argon and tetrafluoromethane.3.1.2.1 DiscussionThe termino
10、logy system for fluorine-containing compounds (described in detail in ASHRAE Stan-dard 34) provides a convenient means to reference the structureof individual compounds. By definition, the first digit of thenumbering system represents one less than the number ofcarbon atoms in the compound molecule;
11、 the second digit, onemore than the number of hydrogen atoms in the compoundmolecule; and the third digit, the number of fluorine atoms inthe compound molecule. Unaccounted for valence require-ments are assumed to be chlorine atoms. For example, thedesignation HCFC-123 indicates two carbon atoms (1
12、+ 1), onehydrogen atom (2-1), three fluorine atoms (3), and two chlorineatoms (2 atoms required based on valence requirements).Example: CF3CCl2H = HCFC-123.1This specification is under the jurisdiction of ASTM Committee D26 onHalogenated Organic Solvents and Fire Extinguishing Agents and is the dire
13、ctresponsibility of Subcommittee D26.09 on Fire Extinguishing Agents.Current edition approved Feb. 1, 2017. Published March 2017. Originallyapproved in 2005. Last previous edition approved in 2011 as D7122-11. DOI:10.1520/D7122-17.2For referenced ASTM standards, visit the ASTM website, www.astm.org,
14、 orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Av
15、ailable from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA30329, http:/www.ashrae.org.5Available from U.S. Government Publishing Office (GPO), 732 N. CapitolStreet, NW, Washington, DC 20401-0001, http:/www.gpo.gov.6Avai
16、lable from Air-Conditioning, Heating, and Refrigeration Institute, 2111Wilson Blvd., Suite 500, Arlington, VA 22201, http:/www.ahrinet.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in acc
17、ordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.14. Material Requirements4.1 Th
18、e fill density of HCFC Blend B within a containershould not exceed that needed to achieve complete filling of thecontainer at the maximum envisaged storage temperature. Forexample, the fill density should not exceed 86 lb/ft3(1377kg m3) for a maximum expected temperature of 130 F(54 C). Recommended
19、fill density is 76 lb/ft3(1219 kg/m3)orless.4.2 HCFC Blend B shall conform to the requirementsprescribed in Table 1 when tested by the appropriate testmethods, such as those listed in Section 6.4.3 When a material analysis is required, by agreementbetween the purchaser and the supplier, the total pr
20、essure in theHCFC Blend B container, the fill density of HCFC Blend Bwithin the container and the maximum safe storage tempera-ture shall be part of the material analysis (certification). Thepressure shall be reported in pound-force per square inch gage(preferred) or bar. The fill density shall be r
21、eported in poundsper cubic foot at 70 F (preferred) or kilograms per cubic meterat 21 C. The maximum safe storage temperature of the HCFCBlend B container shall be reported in degrees Fahrenheit(preferred) or in degrees Celsius and shall conform to appli-cable regulations for the HCFC Blend B contai
22、ner design anduse.4.4 By agreement between the purchaser and the supplier,analysis may be required and limits established for elements orcompounds not specified in Table 1.4.5 Prolonged exposure to concentrations of HCFC Blend Bin excess of 2 % by volume in air during periods of elevatedadrenaline c
23、ould produce cardiac arrhythmia in some person-nel.5. Sampling5.1 Samples of HCFC Blend B, taken from the liquid phase,shall be taken from filled containers in accordance with themethod specified in ISO 3427. The sampling cylinder shall becapable of safely resisting the vapor pressure of the sample
24、atthe highest temperature that could be encountered.5.2 The HCFC Blend B selected in accordance with 5.1shall be tested for quality conformance in accordance withTable 1. The presence of one or more defects shall be cause forrejection.6. Test Methods6.1 PurityConduct the analysis in accordance with
25、Prac-tice D6806.6.2 AcidityConduct the analysis in accordance with themethod specified in 2008 Appendix C to AHRI Standard700-2014, Part 1.6.3 Water ContentConduct the analysis in accordancewith the method specified in 2008 Appendix C to AHRIStandard 700-2014, Part 2.6.4 Nonvolatile ResidueConduct t
26、he analysis in accor-dance with the method specified in 2008 Appendix C to AHRIStandard 700-2014, Part 3.6.5 Suspended Matter or SedimentWhile performing thenonvolatile residue analysis, examine visually for any sus-pended matter or sediment. Observation of any suspendedmatter or sediment shall cons
27、titute failure of the test.7. Container, Packaging, and Package Marking7.1 Containers used for shipping and storage of HCFCBlend B conforming to this specification shall be marked inaccordance with Code of Federal Regulations (CFR) Title 49,Part 172, Subpart D. The proper shipping name is “UN1956,Co
28、mpressed Gas, N.O.S., 2.2 (Contains Argon, Tetrafluo-romethane).” In addition to DOT requirements, containersshould be marked with the following information as a mini-mum:7.1.1 Suppliers name and address,7.1.2 HCFC Blend B, and7.1.3 Statement that material conforms to SpecificationD7122.8. Keywords8
29、.1 2,2-dichloro-1,1,1-trifluoroethane; argon; CF3CCl2H;fire extinguishant; fire suppressant; Halotron7I; HCFC-123;HCFC Blend B; tetrafluoromethaneASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of
30、 this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five
31、 years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical co
32、mmittee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA
33、19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the
34、 standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ is a registered trademark of American Pacific Corporation.TABLE 1 RequirementsProperty RequirementHCFC-123 Purity 99 %, mol/mol, min (exclusive of any argonor tetrafluoromethane present)HCFC-123 Content 95 %, mol/mol, minArgon Content 0.2 %, mol/mol, minTetrafluoromethane Content 0.4 %, mol/mol, minAcidity 1.0 ppm by mass, as HCL, maxWater content 20 ppm by mass, maxNonvolatile residue 0.01 % by weight, maxSuspended matter or sediment none visibleD7122 172
