The aim of the study is to estimate the planned emissions of 131I from the Belarusian NPP, individual and collective annual effective radiation doses for the population of the Ostrovets district of the Grodno region living in the Belarusian NPP observation zone. The study was conducted in accordance with the methodology of the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR 2017). Has been established that in case of regular operation of Belarusian NPP and compliance with the annual emission limit for the gas and aerosol form of the isotope 131I, the individual annual effective doses for residents living in the localities of the Ostrovets district in the Belarusian NPP observation zone will not exceed 0.23 mSv. This value of individual annual effective doses for residents will be formed mainly due to internal radiation, when the 131I isotope is administered orally with milk and dairy products. This value of individual annual effective doses is significantly less than the minimum significant radiation dose. However, taking into account the characteristics of the 131I isotope, the need for radiation-hygienic monitoring and health assessment in the territory under consideration during the normal operation of the Belarusian NPP is not excluded.
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