Radiation survey of the territory of the Republic of Belarus adjacent to Ignalina NPP

Authors

  • Yury A. Bugrov Department for Nuclear and Radiation Safety of the Ministry for Emergency Situations of the Republic of Belarus; 220030, Belarus, Minsk, Bersona str., 16
  • Ekaterina K. Nilova State Scientific and Technical Institution «Center for Nuclear and Radiation Safety»; 220067, Belarus, Minsk, Shpilevskogo str., 59-7N https://orcid.org/0000-0001-9221-269X
  • Zhanna G. Kronova State Scientific and Technical Institution «Center for Nuclear and Radiation Safety»; 220067, Belarus, Minsk, Shpilevskogo str., 59-7N
  • Vladimir L. Samsonov State Institution «Republican Center for Hydrometeorology, Control of Radioactive Contamination and Environmental Monitoring» of the Ministry of Natural Resources of the Republic of Belarus; 220114, Belarus, Minsk, Nezavisimosti ave., 110

DOI:

https://doi.org/10.33408/2519-237X.2022.6-2.176

Keywords:

Ignalina NPP, observation zone, radionuclides, ambient dose equivalent rate of γ-radiation, γ-spectrometry, filter-ventilation installations, volumetric activity, total count rate, specific activity

Abstract

Purpose. To carry out a selective survey of the territory of the Republic of Belarus adjacent to the area where the Ignalina NPP is located.

Methods. Gamma spectrometric method, comparative analysis, expert evaluation method.

Findings. The article presents the results of measurements of the main parameters characterizing the radiation situation on the territory of the Belarusian segment of the observation zone of the Ignalina NPP – values of the ambient dose equivalent rate of γ-radiation and the total count rate of γ-radiation pulses, carrying out γ-spectrometry in the field using scintillation and semiconductor spectrometers, as well as determining the volumetric activity of radionuclides present in the surface layer of atmospheric air, the specific activity of radionuclides in samples of soil, water and bottom sediments. As a result of processing the spectra in environmental objects in the survey area, the presence of terrigenous radioisotopes (40K, daughter members of the 232Th and 226Ra (238U) series), cosmogenic 7Be and technogenic 137Сs was established. The specific activity of 137Cs in the soil on the territory of the Belarusian sector of the 30 km zone of the Ignalina NPP is 2.1–3.5 Bq/kg, the density of surface contamination with this radionuclide is 140–280 Bq/m2. The content of other gamma-emitting technogenic radionuclides, whose activity in the environment is usually monitored to assess the radiation situation, is below the detection limit under these measurement conditions.

Application field of research. The data obtained as a result of independent radiation monitoring, characterizing the radiation situation in the zone of influence of the Ignalina NPP, can be the basis for a comparative analysis of the measurement results in the subsequent assessment of the radiation situation in the zone of observation of both the Ignalina and the Belarusian NPP.

Author Biographies

Yury A. Bugrov, Department for Nuclear and Radiation Safety of the Ministry for Emergency Situations of the Republic of Belarus; 220030, Belarus, Minsk, Bersona str., 16

Division for Radiation Safety Regulation, Deputy Head of Division

Ekaterina K. Nilova, State Scientific and Technical Institution «Center for Nuclear and Radiation Safety»; 220067, Belarus, Minsk, Shpilevskogo str., 59-7N

Radiation Safety Department, Senior Researcher; PhD in Biological Sciences

Zhanna G. Kronova, State Scientific and Technical Institution «Center for Nuclear and Radiation Safety»; 220067, Belarus, Minsk, Shpilevskogo str., 59-7N

Radiation Safety Department, Researcher

Vladimir L. Samsonov, State Institution «Republican Center for Hydrometeorology, Control of Radioactive Contamination and Environmental Monitoring» of the Ministry of Natural Resources of the Republic of Belarus; 220114, Belarus, Minsk, Nezavisimosti ave., 110

Department of Radiospectrometry, Head of Department

References

th National Report Under the Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management. Vilnius: State Nuclear Power Safety Inspectorate (VATESI), 2020. 120 p.

Nilova E.K., Bortnovsky V.N., Tagai S.A., Dudareva N.V., Nikitin A.N. Assessment of the current levels of 241Am и 137Сs in soils and foodstuff, as well as of public internal exposure to ionizing radiation in populated areas adjacent to the Chernobyl NPP exclusion zone (case study: the Bragin district of the Gomel region, Belarus). Radiation Hygiene, 2020. Vol. 13, No. 3. Pp. 25–37. (rus). DOI: https://www.doi.org/10.21514/1998-426X-2020-13-3-25-37. EDN: https://www.elibrary.ru/NWKLDT.

Environmental consequences of the Chernobyl accident and their remediation: twenty years of experience. Report of the Chernobyl Forum Expert Group «Environment». Vienna: International Atomic Energy Agency, 2006. 180 p.

Sources and Effects of Ionizing Radiation. Report of the United Nations Scientific Committee on the Effects of Atomic Radiation to the General Assembly to the General Assembly, with Scientific Annexes. New York: UNSCEAR, 1994. 274 p.

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Published

2022-05-25

How to Cite

Bugrov Ю. А., Nilova Е. К., Kronova Ж. Г. and Samsonov В. Л. (2022) “Radiation survey of the territory of the Republic of Belarus adjacent to Ignalina NPP”, Journal of Civil Protection, 6(2), pp. 176–185. doi: 10.33408/2519-237X.2022.6-2.176.