NFPA 12A: Standard on Halon 1301 Fire Extinguishing Systems
Current Edition: 2009 Next Edition: 2015

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NFPA 12A:
2009 Edition
Item #: 12A09
List: from $46.50
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What is NFPA 12A?
NFPA 12A: Document Scope
1.1 Scope. This standard contains minimum requirements for total flooding Halon 1301 fire extinguishing systems. It includes only the essentials necessary to make the standard workable in the hands of those skilled in this field. Only those skilled in this work are competent to design, install, maintain, decommission, and remove this equipment. It might be necessary for many of those charged with purchasing, inspecting, testing, approving, operating, and maintaining this equipment to consult with an experienced and competent fire protection engineer to effectively discharge their respective duties. (See Annex C.)
This standard contains requirements for total flooding Halon 1301 fire extinguishing systems to help those who design, install, test, inspect, approve, list, operate, maintain, decommission, and remove halogenated agent systems ensure that such equipment will function as intended throughout its life. Official document scope
What does NFPA 12A address?
Provisions related to components discuss Halon 1301 supply; distribution; and detection, actuation, alarm, and control systems. Design requirements cover topics such as specification, plans, and approvals; system flow calculations; enclosures; design concentration requirements; and altitude adjustments. Criteria are also provided for inspection, maintenance, testing, and training. Numerous appendices provide valuable information on enclosure integrity procedure, hazards to personnel, storage containers, piping, system flow calculations, and more.Table Of Contents.
NFPA 12A, 2009 Edition: Archived Revision Information
Report on Proposals (ROP)
Report on Proposals (ROP)
Proposals can be submitted for text to be amended or included in NFPA Codes and Standards. Following the Call for Proposals period, the responsible Technical Committee or Panel holds a meeting to consider and act on all submitted proposals. The committee or panel may also develop its own proposals. A document known as the Report on Proposals (ROP) is prepared containing all the Public Proposals, Technical Committees' action on each Proposal, as well as all Committee-generated proposals. The ROP for the document in question is submitted for the approval of the responsible TC or Panel by a formal written ballot. If the ROP does not receive approval via written ballot in accordance with NFPA rules, the Report is returned to the committee for further consideration and is not published. If the necessary approval is received, the ROP is published in a compilation of Reports on Proposals issued by NFPA twice yearly for public review and comment, and the process continues to the next step. The ROP is published and widely distributed and anyone may download or request a copy.
NFPA 12A skipped F2006 at the ROC stage to A2008 ROP because of new topics to be addressed.
Report on Comments (ROC)
Report on Comments (ROC)
Once the ROP becomes available, there is a 60-day comment period during which time anyone may submit a public comment on the proposed changes documented in the ROP. The committee or panel reconvenes at the end of the comment period and acts on all public comments. This committee or panel may also develop its own comments. As before, approval obtained via written ballot in accordance with NFPA's Regulations is required on all committee and panel actions. All of this information is compiled into a second Report, called the Report on Comments (ROC), which like the ROP, is published and made available for public review for a seven-week period.
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Archived revision information
NFPA 12A, 2009 Edition: Archived Revision Information
View archived proposals, comments and other records related to the development of this edition.
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Formal Interpretations (FIs)
Formal Interpretations (FIs)
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For previously issued Formal Interpretations (not listed below), e-mail the NFPA Library, or call +1 617 984-7445, or fax +1 617 984-7060.

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