Optimization of radiation protection of professionals with an allowance for limits of integrated risk of potential exposure to radiation

Basic issues on optimization of radiation protection in a case of potential exposure to radiation, such as design of mathematical models for an assessment of risks for occupational chronic exposure to radiation, methods for assessment of basic scenarios of occupational exposure with allowance for potential irradiation integrated risk limits are reviewed in the paper. Restrictions of annual risk if dose limits exist, require optimizing plan of exposure of professionals to radiation. In this case age, gender, temporal dose distribution, as well as expected baseline cancer incidence and mortality characteristic to specific groups of professionals should be taken into account. Examples of some scenarios of irradiation of nuclear workers adjusted to Russian data are given in the article. Radiation dose close to dose limits stated by National Radiation Standards-99/2009 (20 mSv/year during 5 consecutive years) should be restricted in accordance with the age of a person. The restrictions should be applied to men of ≥ 25 years old and women of ≥ 41years old. To make analysis of cases of random irradiation a design of specialized software is required.