Halon 1211 extinguishers rated for Class A fires
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December 15, 1980
Mr. Dennis K. Shira
Safety Coordinator
State Farm Insurance Companies
[Recipient address omitted]
Dear Mr. Shira:
This is in response to your inquiry concerning the revised fire protection standards of the Occupational Safety and Health Administration (OSHA) with respect to the use of Halon 1211 fire extinguishers for class A hazards.
At the time OSHA was preparing the final rule for its fire protection standards, Halon 1211 fire extinguishers had not yet received a class A rating from UL. Since that time however, and as you correctly noted, some Halon 1211 fire extinguishers have recently received a class A rating from UL. The OSHA fire protection standards permit the use of any fire extinguisher for use on class A hazards if the extinguisher has received a class A rating from UL. Therefore, those Halon 1211 fire extinguishers with a UL class A rating are permitted to be used on class A hazards.
We hope this has answered your question. Please contact us if you need further assistance.
Sincerely,
Glen E. Gardner
Senior Safety Specialist
Office of Fire Protection
Engineering and Systems Safety Standards
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