THE EXPOSURE OF RUSSIAN FEDERATION POPULATION, LIVING IN THE TERRITORIES AFFECTED DUE TO THE ACCIDENT ON CHERNOBYL NPP

Abstract

An article is devoted to the estimation of the current, accumulated and prognosis exposure doses for the population living in the territories affected due to the accident on Chernobyl NPP. It is established that the values of the average annual exposure dose of the population of a settlement will not exceed 1 mSv/year in conditions of the absence of active measures for population radioactive protection in 13 from 14 territories of Russian Federation (except Bryansk region) referred to the zones of radioactive contamination due to Chernobyl accident. Average annual population effective exposure dose for the population of a settlement from the Chernobyl accident products (in conditions of the absence of active measures for population radioactive protection) exceeds 0.3 mSv/year only in 713 settlements of Bryansk, Kaluga, Orel and Tula regions. Mentioned dose exceeds 1 mSv/year in 276 settlements of Bryansk region affected to the highest radioactive contamination, and in 8 from these settlements this dose exceeds 5 mSv/year. The results obtained during the Institute investigations allowed establishing the peculiarities of exposure dose forming for the population living in the settlements located in the territories with different levels of 137Cs soil surface activity. Due to this fact we have opportunity of estimation actual and prognosis exposure doses for population and it's critical groups not only for investigated settlements but for all settlements referred to the zones of radioactive contamination. Corresponding dose estimations were consistently carried out for the settlements of 14 territories of Russian Federation affected with radiation contamination after the accident in Chernobyl NPP.