Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

Impact of the JSC “SSC RIAR” activity on the Public Radiation Doses Prior to the Commissioning of a Multi-Purpose Fast Neutron Reactor

6/30/2025 2025 - #02 Environmental aspects of nuclear power

Panov A.V. Mikailova R.A.

DOI: https://doi.org/10.26583/npe.2025.2.07

UDC: 614.876: 614.73: 621.039

The article provides an assessment of the radiation doses to the population from the long-term emissions of the “Research Institute of Atomic Reactors” (RIAR, JSC “SSC RIAR”) before the operation of the Multipurpose Fast Neutron Reactor (MBIR). Radiation doses were calculated for the atmospheric release of 71 radionuclides, covering six age groups of urban and rural populations residing in the influence zone of JSC “SSC RIAR”. The evaluation was performed using the CROM software recommended by the IAEA. Dose calculations were carried out under two scenarios: average annual and maximum radionuclide emissions during 2010–2020, taking into account the consumption of locally produced food. The study showed that the average annual radiation doses for residents of urban and rural settlements in the influence zone of JSC “SSC RIAR” range from 1.04 to 1.11 µSv, depending on the volume of atmospheric emissions of anthropogenic radioisotopes. The main contribution (90–96%) to the dose burden is from external exposure to radionuclides in the air (notably 88Kr, 138Xe, and 41Ar). Radiation from the ground surface accounts for 2–4%, food consumption containing anthropogenic radionuclides contributes 1–4%, and inhalation pathways account for approximately 1–3% of the dose. The most exposed category is children aged 2–7 years. Up to 80% of the internal radiation dose from local food consumption is attributable to 131I, with the main dose-forming food products being: cereals (up to 30–50% across different age groups), fruits and berries (10–65%), fruit vegetables (20–50%), and leafy vegetables (5–15%). Overall, the average annual radiation dose to the population from emissions of JSC “SSC RIAR” does not exceed 0.04% of the total dose burden from all sources (2.8 mSv) in the region.

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SSC RIAR MBIR radioactive emissions radionuclides population CROM radiation dose exposure pathways radionuclide ranking natural radiation background radiation safety

Link for citing the article: Panov A.V., Mikailova R.A. Impact of the JSC “SSC RIAR” activity on the Public Radiation Doses Prior to the Commissioning of a Multi-Purpose Fast Neutron Reactor. Izvestiya vuzov. Yadernaya Energetika. 2025, no. 2, pp. 71-85; DOI: https://doi.org/10.26583/npe.2025.2.07 (in Russian).

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