Study of annual effective radiation doses of Polesie State Radiation and Ecological Reserve staff

Objective. To analyze annual effective radiation doses of the Polesie State Radiation and Ecological Reserve (PSRER) staff over a period of 2021-2022, and identify the factors causing differences in these indicators among various categories of enquired personnel.

Materials and methods. The results of 840 measurements of external and internal radiation doses (obtained respectively by the method of thermoluminescent dosimetry and based on WBC measurements) for the period from 2021 to 2022 were studied. Professional, gender and age differences in personnel radiation dose were specified using nonparametric statistics methods by comparing two independent samples, as well as using one-way analysis of variance.

Results. The median annual effective dose of radiation for PSRER employees was 1.14 mSv/year in 2021-2022. The highest value of external radiation dose is typical for forestry workers, it is statistically significantly higher compared to executives (p<0.05), specialists (p<0.05), workers (p<0.05), service personnel (p<0.05), drivers (p<0.05), engineers (p<0.05) and researchers (p<0.05).

The age factor has a significant impact on dose indicators: for workers aged 59–72 years, the parameters of the annual effective dose are the highest and significantly exceed the doses of workers aged 18-26 years (by 29%) (p<0.05). Higher annual effective dose rates were found in men compared to women (1.2 times, p<0.05).

Conclusion. Analysis of radiation doses on employees of the PSRER made it possible to reveal the greatest influence of professional and gender factors on the annual effective dose and effective external exposure dose

1. Hotuljova AV. Methodology for determining the effective dose of external irradiation of the population living in the territory with man-made altered radiation background. Bulletin of RUDN. Series: Ecology and Life Safety. 2010;(3):111-116. [date of access 2024 august 06]. Available from: https://cyberleninka.ru/article/n/metodika-opredeleniya-effektivnoy-dozy-vneshnego-oblucheniya-naseleniya-prozhivayuschego-na-territorii-s-tehnogenno-izmenennym (In Russ.)

2. Eventova LN, Averin VS, Mataras AN, Visenberg YV. External dose monitoring for population of Belarus in the remote period after the Chernobyl accident. Medical and Biological Problems of Life Activity. 2017;(1):100-104. [date of access 2024 august 06]. Available from: https://medbio.ejournal.by/jour/article/view/193 (In Russ.).

3. Avetisov AR, Nazarova MA, Bondareva NS, Kvitkevich LA, Stojarov AN. The annual effective dose of the population of Myadel and Postavy districts due to the contamination of the territory with anthropogenic radionuclides Cs-137 and Sr-90. Medical journal. 2017;(2):62-64. [date of access 2024 august 06]. Available from: https://www.elibrary.ru/item.asp?id=29430483 (In Russ.).

4. Bruk GYa, Romanovich IK, Bazyukin AB, Bratilova AA, Vlasov AYu, Gromov AV, et al. The Average Annual Effective Doses for The Population of the Settlements of the Russian Federation Attributed to Zones of Radioactive Contamination Due yo the Chernobyl Accident (For the Zonation Purposes), 2017. Radiatsionnaya Gygiena = Radiation Hygiene. 2017;10(4):73-78. (In Russ.). DOI: https://doi.org/10.21514/1998-426X-2017-10-4-73-78

5. Bratilova AA. The exposure of Russian federation population, living in the territories affected due to the accident on Chernobyl NPP. Medical and Biological Problems of Life. 2016;15(1):97-105. [date of access 2024 august 06]. Available from: https://elibrary.ru/item.asp?id=28116501 (In Russ.).

6. Panov AV, Komarova LN, Lyapunova ER, Mel’nikova AA. Peculiarities of the exposure dose formation on the population in the most affected regions of Russia after the Chernobyl NPP accident. News of Higher Educational Institutions. Nuclear Energy. 2023;(3):73-84. (In Russ.) DOI: https://doi.org/10.26583/npe.2023.3.06

7. Rakitsky VN, Kuzmichev MK, Klepikov OV, Kurenkova GV. Comparative evaluation of average doses of radiations of population of Irkutsk and Voronezh regions according to «Unified state system of control of individual doses». Radiation Hygiene. 2021;(2):72-78. (In Russ.). DOI: https://doi.org/10.21514/1998-426X-2021-14-2-72-78

8. Sokolov P, Chernyshev P. Evaluation of the effective dose of irradiation of the population of the Volgograd region. Forum. 2018;(1):104-108. [date of access 2024 August 06]. Available from: https://www.elibrary.ru/item.asp?id=32819529 (In Russ.).

9. Eventova LN, Mataras AN, Batyan AN, Vlasova NG, Visenberg YuV. Exposure doses to the population of Belarus from the Chernobyl accident in 2021-2025. Journal of the Belarusian State University. Ecology. 2022;(4):70-78. (In Russ.). DOI: https://doi.org/10.46646/2521-683X/2022-4-70-78

10. Bratilova AA, Bazyukin AB, Gromov AV, Drozdova EA, Zhesko TV, Kaduka MV, et al. Overview of average current and accumulated effective radiation doses of the Russian federation settlements residents classified as zones of radioactive contamination. Civil Security Technologies. 2017;10(4):73-78. [date of access 2024 August 06]. Available from: https://www.elibrary.ru/download/elibrary_67238210_64711587.pdf (In Russ.).

11. Vlasova NG. Comparative analysis of average annual effective radiation doses to residents of populated areas of the Republic of Belarus according to the Dose Catalogues-2015 and 2009. Proceedings of the Francisk Skorina Gomel State University. Series: Natural Sciences. 2017;1(102):20-24. [date of access 2024 August 06]. Available from: https://elib.gsu.by/handle/123456789/817 (In Russ.).

12. Kulikovich DB, Vlasova NG. Statistical analysis of factors contributing to the formation of the external radiation dose. Health and Ecology Issues. 2022;19(3):99-105. (In Russ.). DOI: https://doi.org/10.51523/2708-6011.2022-19-3-14

13. Vlasova NG. Assessment of the average annual effective doses for the inhabitants of the settlements located in the territories contaminated due to the Chernobyl accident. Radiation Hygiene. 2012;5(2):9-13. [date of access 2023 December 18]. Available from: https://www.radhyg.ru/jour/article/view/131/148 (In Russ.).

14. Vlasova NG. Assessment of the average annual effective external exposure doses of the settlements of the republic of Belarus for territory zoning. Medical and Biological Problems of Life Activity. 2018;2(20):25-30. [date of access 2023 December 18]. Available from: https://www.elibrary.ru/item.asp?id=38202240 (In Russ.).

15. Kulikovich DB, Vlasova NG, Visenberg YuV, Kuznetsov BK. Method for reconstructing individualized external exposure dose of persons living in a contaminated area with radionuclides as a result of the Chernobyl accident. Journal of the Belarusian State University. Ecology. 2024;(1):46-57. (In Russ.). DOI: https://doi.org//10.46646/2521-683X/2024-1-46-57

16. Drozdou DN, Averin VS. Use of methods of the factorial analysis for revealing the generalizing characteristics, allowing to estimate the variation of the average annual doze of the internal irradiation. Health and Ecology Issues. 2008;(2):10-14. (In Russ.). DOI: https://doi.org/10.51523/2708-6011.2008-5-2-2

17. Vlasova NG, Mataras AN, Eventova LN, Drozd EA, Visenberg YV, Evtushkova GN. Assessment of individualized radiation doses of persons included in the state register who were exposed to radiation as a result of the Chernobyl disaster and other radiation accidents. [Electronic resource]. Achievements of Medical Science in Belarus. [date of access 2024 November 18]. Available from: http://med.by/dmn/book.php?book=15-20_3 (In Russ.).