The Effect of Halon 1301 Fire Extinguishing Agent on the Response of Combustible Gas Indicators.

Abstract : A combustible gas indicator (CGI) was tested in combustible vapor-air mixtures with and without the presence of halon 1301 vapors. CGI response to hydrocarbon vapors was reduced on the average of about 30% in the presence of halon 1301 vapors at fire extinguishment concentrations for hydrocarbon type fires (3.7%) and about 45% at inerting concentrations (7.4%). Some filament deterioration was noted in filaments which were exposed to halon vapors. Sensitivity loss for these filaments averaged about 9%. (Author)