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About Substitution for Ozone-Depleting Agents for Fire Extinguishing



A N. Baratov, N P. Kopylov, E V. Timofeev


New ozone-friendly fire extinguishing mixtures based on iodinated halons are proposed in the present paper. They act on a flame both chemical inhibitor and diluent. It was obtained that mixture CF3H+CH3I has value of minimum fire extinguishing concentration (MFEC) which is less on 20 % (vol.) or on 16 % (mass.). The new method of determination of fire extinguishing concentrations ("cylinder" method) is proposed in this paper. Adequacy of the new method was confirmed by results of large-scale experiments. Experimental results show that values of MFEC for CF3H, C2F5H and CO2 are less 34, 16, and 30 % respectively, when MFEC was determined according to "cylinder" method.
Special Publication (NIST SP) - 984
Report Number


halons, halon alternatives, extinguishing, fire extinguishing agents, ozone


Baratov, A. , Kopylov, N. and Timofeev, E. (2002), About Substitution for Ozone-Depleting Agents for Fire Extinguishing, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed May 21, 2024)


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Created June 1, 2002, Updated August 7, 2014