Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English   Periodicity: 4 times per year   Open access peer reviewed journal

Full text (ua)

O. V. Gaidar, V. V. Tryshyn, O. V. Svarychevska, I. O. Pavlenko^*, O. V. Svyatun, I. A. Maliuk, S. V. Teletska

Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine

^*Corresponding author. E-mail address: ipavlenko2008@ukr.net

Abstract: The results of the analysis of the radiation state of environmental objects in the sanitary protection zone (SPZ) and surveillance zone (SZ) of the research nuclear reactor (RNR) WWR-M of the Institute for Nuclear Research of the National Academy of Sciences of Ukraine (INR) for 2021 are analyzed and compared with the data for previous years (from 2016 to 2020). The levels of total beta activity of sedimentary dust and atmospheric precipitation and wastewater from the main reservoirs of INR, the concentration of beta-active aerosols in the surface layer of atmospheric air, as well as the content of ¹³⁷Cs radionuclide in soil and vegetation samples, were studied. The research was conducted in the laboratory of the Center for Ecological Problems of Atomic Energy of INR. The obtained results show that in 2021 there was no excess of the values of controlled parameters compared to previous years. There was also no significant difference in the specific activity of the radionuclide ¹³⁷Cs in soil and vegetation samples from SPZ and ZS. Studies conducted in the period from 2016 to 2021, allowed to accumulate significant factual material on the radiation situation in the sanitary protection zone and surveillance zone and to substantiate the conclusion about the absence of man-made radioactive contamination of the environment due to the operation of RNR WWR-M of INR of NAS of Ukraine.

Keywords: research nuclear reactor, radiation state, radionuclides, sanitary protection zone, observation zone, environment.

1. L.N. Marey, A.S. Zykova (Eds.). Guidelines for Sanitary Control of the Content of Radioactive Substances in Environmental Objects (Moskva: 1980) 356 p. (Rus)

2. Report of the Borys Sreznevsky Central Geophysical Observatory. Chapter 3. Radioactive pollution of atmospheric air (Kyiv: Central Geophysical Observatory, 2018) 173 p. (Ukr)

3. O.V. Gaidar et al. Analysis of the current radioecological state in the zone of influence of the VVR-M research nuclear reactor of the Institute for Nuclear Research of the National Academy of Sciences of Ukraine. Yaderna Enerhetyka ta Dovkillya (Nuclear Power and the Environment) 2(17) (2020) 102. (Ukr) https://doi.org/10.31717/2311-8253.20.2.11

4. I.O. Pavlenko et al. Analysis of dynamics of summary surface β-activity of deposited dust and atmospheric precipitations in the sanitary-safety zone of the WWR-M reactor of INR of the NAS of Ukraine during 2014 - 2018. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 21(2020) 58. (Ukr) https://doi.org/10.15407/jnpae2020.01.058

5. V.V. Tryshyn et al. Radiation monitoring of environmental objects in zone of the influence of the research WWR-M reactor of the Institute for Nuclear Research, National Academy of Sciences of Ukraine. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 2 (2010) 165. (Ukr) http://jnpae.kinr.kiev.ua/11.2/Articles_PDF/jnpae-2010-11-0165-Tryshyn.pdf

6. Control levels of the equivalent dose of gamma radiation, contamination of surfaces with beta-emitting radionuclides and the content of radionuclides in the soil for the city of Kyiv. Document approved by the Chief State Sanitary Doctor of Ukraine on August 9, 2010.