SECONDARY CONTAMINATION OF 30-km ZONE OF THE CHERNOBYL ATOMIC ELECTRIC PLANT AND ADJACENT TERRITORY DUE TO RADIONUCLIDES CARRIED BY ASCENDING WIND

The territory contaminated with radionuclides as a result of the accident at the Chernobyl atomic electric plant is a surface source of radioactive aerosols carried into the atmosphere by ascending winds. In this connection, a number of problems arise whose solution is important for assessment of the radiation conditions in the atmosphere near the Earth's surface, viz.: calculation of the volume concentration of radionuclides and their fallout on the contaminated and neighboring territory and on this basis determine the potentially dangerous contaminated regions; assessment of the secondary contamination of deactivated territories due to ascending winds and transfer of radionuclides; determination of the size of the protective (buffer) zones around or near populated areas to ensure low volume