Assessment of the radiation situation and external exposure of forestry workers during work in the I and II zones of radioactive contamination

Abstract

Predictive calculations of the dynamics of the 137Cs soil pollution density and the ambient dose equivalent capacity were performed on the example of 100 forest blocks with a 137Cs soil pollution density from 50 to 550 kBq/m2 and the dose of external irradiation of workers during forestry work. It is shown that during the time period from 2024 to 2064, the main number of forest blocks will belong to the I zone of radioactive contamination, during this time a decrease in the number of blocks in the Ib subzone and an increase in Ia is predicted. By 2084, half of the forest districts will be classified as conditionally uncontaminated territories. In the period from 2024 to 2084, a 4-fold decrease in the interquartile power interval of the equivalent ambient dose at a height of 1 m and the dose of external irradiation of workers in forest plantations caused by gamma radiation of 137Cs is predicted.