Ranking the radioactive contaminated territory in density of soil contamination, dose, contribution to the dose of external and internal components

Abstract

The analysis of the dynamics of the ratio of external and internal exposure doses in population, lived in the settlements with different density of soil radioactive contamination, have been conducted. Throughout the whole radioactive contaminated territory the contribution of external radiation decreases with time, and internal is increasing, but the domination of external exposure is noted, and by 2015 the contributions of external and internal radiation are equal. A ranking of the territory in density of soil contamination, values of the dose and the contribution of external and internal components to dose have been conducted. It allowed to select 7 different zones of radioactive contamination. The results of the study will allow to optimize the radiation protection of the residents of the settlements located in the radioactively contaminated areas, and can be used in justifying the principles and criteria for the classification of radioactive contaminated areas to ensure the social protection of citizens. Key words: density of soil contamination, external exposure dose, internal exposure dose, contribution of external and internal components to dose, ranking of the territory