ASTM_D_7122_-_11.pdf

Designation:D712211Standard 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 parentheses 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-fightingequipment 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 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,Section 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 to use.Specific hazards statements are given inSection 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 ISO 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 of Packag-ing for Transportation2.5 AHRI Standard:62008 Appendix C Analytical Procedures for AHRI Standard700-20063.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 hydrogen,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 terminology 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;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+1),onehydrogen atom(2-1),three fluorine atoms(3),and two chlorineatoms(2 atoms required based on valence requirements).Example:CF3CCl2H=HCFC-1231This specification is under the jurisdiction of ASTM Committee D26 onHalogenated Organic Solvents and Fire Extinguishing Agents and is the directresponsibility of Subcommittee D26.09 on Fire Extinguishing Agents.Current edition approved Aug.1,2011.Published September 2011.Originallyapproved in 2005.Last previous edition approved in 2005 as D 7122-05.DOI:10.1520/D7122-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,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,11 W.42nd St.,13thFloor,New York,NY 10036.4Available from American Society of Heating,Refrigerating,and Air-Conditioning Engineers,Inc.(ASHRAE),1791 Tullie Circle,NE,Atlanta,GA30329.5Available from Superintendent of Documents,U.S.Government PrintingOffice,Washington,DC 20036.6Available from Air-Conditioning,Heating,and Refrigeration Institute,2111Wilson Blvd.,Suite 500,Arlington,VA 22201.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Material Requirements4.1 The 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 130F(54 C).Recommended fill density is 76 lb/ft3(1219 kg/m3)or less.4.2 HCFC Blend B shall conform to the requirementsprescribed in Table 1 when