CAREFULLY PROVIDED PARAMETERS OF TYPES OF PORTABLE EXHAUSTERS FOR EQUIPING WHEELED TRANSPORT UNITS

Abstract

The combustion parameters of wheeled vehicles were analyzed. It has been established that in order to study the fire extinguishing ability of fire extinguishers when extinguishing fires in the underhood space of a wheeled vehicle, it is expedient to create non-standardized combined fire sources, which are a combination of fire classes A and B, simulating the fire load of the underhood space of a car. Taking into account the results of the calculations of the thermal power of combustion and the fire load of model fires of classes A and B and the scientific results highlighted in the work of researchers of the New Zealand University of Canberra, which deals with issues of fire safety of motor vehicles, it was determined that when creating non-standardized combined fires, it is appropriate to use model fires as a basis fire sources 8A and 34B. The ratios in which non-standardized combined fire pits were made, which in terms of fire load correspond to the underhood space of a passenger car, are given. The results of experimental studies on determining the fire-extinguishing ability of fire extinguishers during the extinguishing of the specified
non-standardized combined fires, as well as the results of real-life fire studies on extinguishing fires in the underhood space and interior of a passenger car, are given. The factors on which the process of extinguishing fires with fire extinguishers on wheeled vehicles depends are indicated. On the basis of the conducted experimental studies, proposals regarding the possibility of using different types of fire extinguishers for extinguishing fires on wheeled vehicles have been scientifically substantiated. The minimum number of portable powder and water-foam fire extinguishers and the charge of fire-extinguishing substance for equipping with them different classifications of wheeled vehicles with internal combustion engines and other specific types of engines have been established. The shortcomings of the current standards for equipping wheeled vehicles with primary fire extinguishing means are indicated. A brief description of the project of new standards for equipping wheeled vehicles with portable fire extinguishers is given.