METHODS OF DEPOSITION OF RADIOACTIVE DUST AND CLOUDS DURING EXTINGUISHING OF LOWLAND FIRES IN CHORNOBYL ZONE

Abstract

When extinguishing forest fires, a compact jet is often used, which has a longer range and allows you to increase the distance from the rescuer to the flame. But the convective currents that accompany the fire contribute to the movement of aerosols, combustion products and dust, which contain radionuclides in the forests of the Chornobyl Exclusion Zone. Jets of sprayed water are used to reduce the area of distribution of radioactive elements, their release into the air and protection from them by firefighters during fires in contaminated forests. It must be noted that the sprayed water jet has a shorter range and is effective during low and medium intensity grassroots fires. When extinguishing high-intensity bottom and top fires, it is not used due to the short range of the jet. But the spray jet is effective even in such fires, but only for irrigation of forest areas where firefighters work, extinguishing small fires and unburned fragments of forest combustible materials..

According to the results of the analysis of existing methods and devices for deposition of radioactive dust, clouds and surface irrigation during a ground fire in the exclusion zone, it is established that all fire extinguishing devices available in fire and rescue units and methods of their application are effective only when used locally. during the work of a firefighter-rescuer with a trunk.

An urgent task is to develop equipment for aerosol deposition, dust and surface irrigation and methods of its application. which will increase the area of irrigation and intensify the process of deposition of radioactive dust and clouds.