ANALYSIS OF THE DUAL FIRE SUPPRESSION MECHANISM

It is shown that suppression of flame by fire extinguishing agents is characterized by dual mechanism of this process including the main and the concurrent effects of fire extinguishing agent. It is determined that the action of concurrent effect leads to losses of fire extinguishing agent and deterioration of its extinguishing efficiency. Procedure of determination of optimal flow rate, by the example of the sprayed freon, during suppression of hydrocarbon pouring is considered. The structure of concurrent factor in case of “sublayer” supply of low expansion foam during suppression of the tank with oil product is considered. The simplified models of suppression process of heptane are considered.