ASTM_D_7673_-_D_7673M_-_21.pdf

Designation:D7673/D7673M21Standard Specification forHalon 1211,Bromochlorodifluoromethane(CF2BrCl)1This standard is issued under the fixed designation D7673/D7673M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the requirements for Halon1211 as a fire-fighting medium.1.2 This specification does not address the fire-fightingequipment or hardware that employs Halon 1211 or theconditions of employing such equipment(for example,handhelds,fixed installations,etc.).1.3 This specification does not address the storage ortransportation of Halon 1211.Storage,handling,and transpor-tation issues are addressed in Practice D7815.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently of the other,and values from the twosystems shall not be combined.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,health,andenvironmental practices and determine the applicability ofregulatory limitations prior to use.Specific hazards statementsare given in Section 4.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2108 Test Method for Color of Halogenated OrganicSolvents and Their Admixtures(Platinum-Cobalt Scale)D7815 Practice for Handling,Transportation,and Storage ofHalon 1211,Bromochlorodifluoromethane(CF2BrCl)D6806 Practice for Analysis of Halogenated Organic Sol-vents and Their Admixtures by Gas Chromatography2.2 U.S.Government Standard:349 CFR Part 172 Hazardous Materials Table,SpecialProvisions,Hazardous Materials Communications,Emer-gency Response Information,Training Requirements,andSecurity Plans2.3 AHRI Standard:42008 Appendix C for Analytical Procedures for AHRI Stan-dard 700-20143.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Halon 1211,nthe halogenated hydrocarbon com-pound Bromochlorodifluoromethane used as a fire extinguish-ing medium.3.1.1.1 DiscussionThe halon terminology system pro-vides a convenient means to reference halogenated hydrocar-bon fire extinguishants.Halogenated hydrocarbons are acyclicsaturated hydrocarbons in which one or more of the hydrogenatoms have been replaced by atoms from the halogen series(that is,fluorine,chlorine,bromine,and iodine).By definition,the first digit of the halon numbering system represents thenumber of carbon atoms in the compound molecule;the seconddigit,the number of fluorine atoms;the third digit,the numberof chlorine atoms;the fourth digit,the number of bromineatoms;and the fifth digit,the number of iodine atoms.Trailingzeros are not expressed.Unaccounted for valence requirementsare assumed to be hydrogen atoms.number of hydrogen atoms5(1)number of carbon atoms32!12!2sum of halogen atoms!#1This 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 June 1,2021.Published June 2021.Originallyapproved in 2010.Last previous edition approved in 2015 as D7673/D7673M15.DOI:10.1520/D7673_D7673M-21.2For 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.3Code of Federal Regulations(CFR)documents are available from U.S.Government Publishing Office(GPO),732 N.Capitol St.,NW,Washington,DC20401,http:/www.gpo.gov.4Available from Air-Conditioning,Heating,and Refrigeration Institute(AHRI),2311 Wilson Blvd.,Suite 400,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 accordance 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.1For example,(2)bromochlo