Determining the smoke-generating ability of modern cable products needed to model fires in energy facilities

Abstract

A comparative analysis of methods of carrying out fire tests was carried out in order to obtain the value of smoke formation coefficient required for simulation of fire dynamics at power engineering facilities. A new method of carrying out fire tests to determine smoke-forming ability of substances and materials is proposed. Results of measurements of radiant heat flux density and gas medium temperature inside combustion chamber at different distances from heating element are presented. The effect of the sample area, the density of the heat flow incident on the sample and the temperature inside the combustion chamber on the value of the smoke formation coefficient is shown. For modern types of cable products used at power engineering facilities, values of smoke formation coefficient under different modes have been determined. Dependence of smoke formation coefficient on sample area and on distance from heating element inside combustion chamber is obtained. A comparative analysis of the results obtained at different facilities with the values given in the database of typical fire load was carried out. It was found that the experimental value of smoke formation coefficient differs significantly from the values obtained in the standard ГOCT12.1.044 facility. The results were analyzed.