NFPA 12A Standard on Halon1301 Fire Extinguishing Systems 2022 NFPA
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12A-1 Copyright O 2021 National Fire Protection Association°. All Rights Reserved. NFPA°12A Standard on Halon 1301 Fire Extinguishing Systems 2022 Edition This eitn ofNFPA 12A Sr l30FieExngiing Sst was preared by th TechnicaCommittee onGaseousFireExtinguishingSstemIwassue b the Snards Counil on December 10 2020 with an effective date of December 30 2020 and supersedes all previous editions. This edlition of NFPA 12A was approved as an American National Standard on December 30 2020. Origin and Development of NFPA 12A The Committe on Halogenated Fire Extinguishing Sstems was formed in the fllof 1966 amd held its firstmeeting uringDecember f that yearThe Coiteewas ranized intoour Submitteeswhoseparately prepared arious portionsof he stanard forreview by the full Commitee at meetings held in September and December of 1967. The standard was submitted and adopted at the NFPA Anmual Meeting in Atlanta Georgia May 2024 1968. The 1968 edition was the first edition of this standard and was adopted in tentative form yet been sufficiently tested and elected to carry it in tentative status for one more year. It was in accordance with NFPA regulations. In 1969 the Committee determined that the standard had not presented for offcial adoption in 1970.The first official version of the standard was adopted at the NFPA Anual Meeting inToronto Ontario in May 1970. Revisions were made in 1972 1973 1977 and 1980. The 1985 edlition was a plete revision of the standard. The stanlard as revised in 198 and again in 1989. Thestanardascopletlyrewritenforthe1992editionto state therequirments morelerly and to separate the mandatory requirements from the advisory text in an effort to make the document more usable enforceable and adoptable. The main topic addressed in the revision was the demissioning and remowal of systems. Tesaards uplated t confom to the Mel Sefr NFPA Tl Coit Ds for the 2004 edition. cylinders. For the 2009 edition the standard was revised to address testing and recharging of Halon 1301 The 2015 edition incorporated support for electronic storage of system maintenance records. For the 2018 edition the annex chapter onnozzle and piping calclations (Annex H) was revised the details of the procedure. The 2022edition is a partial revision that incorporates several carifications and corrections Th requirmenfocindrelifcatihenuat totablibtgreiCo of Federal Regulations Title 49 Transportation and a remendation to follow the HRC Code of Practice for Halon Reclaiming Companies has been acided. Foreword Halon 1301 (bromotrifluoromethane or CBrF3) is a colorless odiorless electrically nonconductive gas that is an effetive meium for extinguishing fires.Halon 1301 is incluled in the Montreal Protocol on Substances That Deplete the Ozone Layer signed September 16 1987. The NFPA n til Fe PtiAsiti ar red rls of te Nail Fe PttiAiatio Quin Maachts 19.
12A-2 HALON I30I FIREEXTINGUISHING SYSTEMS subsequnnentestrictthe rodutinfthis agenaiton loaljurisditonwihin seotris.th protocol pemits continued aailabiliy of halogenated fire extinguishing agents at 19S6 prouctionlevels That protocol and EPA in the Unitd States) have nacted further rules regulating the production use handing and disoal of this agen The user ofthis standard is advised toconsult local authorities forcurrentregulations.Halon1301fire xtinguishing systems ar electrically nonconductise medium is essential or desirable or where cleanup of other media presents a problem. useful within the lmits of this standard inextinguishingfires in specific hazards orequipment and inoccupancies where an 2022Editon
NFPA 12A 2022 二氧化碳灭火系统标准.pdf
