Comparative analysis of radiological risks for personnel during the normal operation of the BREST-OD-300 reactor and risks from other adverse environmental factors of a non-radiation nature

Currently, within the framework of the “Proryv” Project, a pilot demonstration energy complex based on the BREST-OD-300 reactor unit is being developed at the industrial site of JSC “Siberian Chemical Combine” (JSC “SChC”). This complex will allow testing nuclear energy technologies of the new generation with a closed nuclear fuel cycle. The key issue in this project is ensuring the safety of personnel. This includes protection from both radiation and non-radiation carcinogenic risk factors. This article presents a comparative analysis of carcinogenic risks for JSC “SChC” employees from exposure to both radiation and man-made environmental factors. According to the data from the radiation risk monitoring system of Rosatom State Corporation in 2022, the average carcinogenic risk for JSC “SChC” employees was 2.7х10-5 year-1, which meets the requirements of the Radiation Safety Standards (NRB-99/2009). It has been shown that the carcinogenic risks from exposure to non-radiation factors are significantly higher than those associated with occupational exposure, and exceed the limit of 2х10-4 year-1, which is set by NRB-99/2009 for workers in situations of potential exposure. Atmospheric air pollution in Seversk, with harmful chemicals like suspended particles, lead, and formaldehyde, contributes most to the carcinogenic risks for workers at JSC “SChC”. These findings are significant for developing a comprehensive strategy to protect JSC “SChC's” staff from the effects of human-made carcinogens and to reduce the incidence of related cancers.