The criteria of estimating risks of spreading fire to adjacent building facilities

Abstract The choice of heat flux receiver is justified in order to investigate the danger of spreading fire to adjacent building objects by the criterion of heat flux for measuring the heat flux density. It is suggested to use the heat flow receiver FOA-013-01. A technique was developed and experimental studies were conducted to determine the heat flux density acting on the elements of adjacent building sites. Measurements of heat flux values were performed by FOA 013-01 heat detectors, which were installed at distances of 2 m, 4 m and 6 m from the fire torch at a height of 1 m. The obtained heat flux density is, on average, for a distance of 2 m - 6.5 kW/m 2 , for distances of 4 m and 6 m - 1 kW/m 2 . Such data indicate a significant variability in the heat flux density over the observation period. Thus, experimental data call into question the possibility of using the “heat flux” criterion from a fire as a reliable criterion for evaluating the risk of fire spreading between adjacent building facilities. It has been suggested that the temperature criterion should be the basis for determining fire distance.