Estimation of ambient dose equivalent rate in forest sites in the south-west of the Bryansk region

«Radiation and Risk», 2023, vol. 32, No. 4, pp.67-78

DOI: 10.21870/0131-3878-2023-32-4-67-78

Authors

Marchenko T.A. – Lead. Researcher, MD, Prof. VNII GOChS (FC).
Radin A.I. – Head of Lab. Contacts: 15 Institutskaya str., Pushkino, Moscow region, 141202, Russia. Tel.: +7(495)993-3054, add. 1-30; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. .
Razdaivodin A.N. – Head of Dep. FBU UNTILM.
¹ All-Russian Scientific Research Institute for Civil Defence and Emergencies of the EMERCOM of Russia (Federal Science and High Technology Center), Moscow
² All-Russian Research Institute for Silviculture and Mechanization of Forestry, Moscow region, Pushkino

Abstract

The large areas of forests in the Bryansk region are still contaminated with radionuclides released due to the accident at the Chernobyl NPP in April, 1986. The recovery of the economic and ecosystems potentials in the contaminated areas is the need to create a favorable living conditions for the population. This involves a full range of remediation activities in the contaminated areas aimed at the forests protection and regeneration. The aim of the work is to assess the ambient dose equivalent rate (ADER) in forest sites located in the zone of radioactive contamination. More than 1 thousand forest sites in the south-western part of the Bryansk region were surveyed from 2019 to 2022. The ADER and the density of the soil contaminated by 137Cs for every surveyed forest site are available. The relationship between the ADER and the density of the soil radioactive contamination in various sites was analyzed. The dose rates were normalized with respect to the density of soil contamination. The ADER rates in the Bryansk forest areas ranged from 0.07 to 3.15 mSv/h. No reliable difference between the ADER in the areas of coniferous and deciduous forests was observed. There was reliable linear relationship between ADER and the density of soil contaminated by ¹³⁷Cs. During forestry operations in radioactive contaminated areas the maximum permissible external radiation effective dose was the dose accumulated for the whole period of work in the forest sites with the average density of soil contaminated by ¹³⁷Cs of 450 kBq/m².

Key words
radioactive contamination, radioecology, forest, soil, ¹³⁷Cs, Chernobyl NPP, ambient dose equivalent rate, exposure doses, life safety.

References

1. Radioekologicheskiye posledstviya avarii na Chernobyl’skoy AES: biologicheskiye effekty, migratsiya, reabilitatsiya zagryaznennykh territoriy [Radioecological consequences of the Chernobyl accident: biological effects, migration, rehabilitation of contaminated areas]. Eds.: N.I. Sanzharova, S.V. Fesenko. Moscow, RIRAE, 2018. 278 p.

2. Razdaivodin A.N., Maradudin I.I., Radin A.I., Romashkin D.Yu. Radioecological problems in the forests of Russia. Lesokhozyaystvennaya informatsiya – Forestry Information, 2019, no. 3, pp. 116-133. (In Russian).

3. Atlas sovremennykh i prognoznykh aspektov posledstviy avarii na Chernobyl'skoy AES na postradavshikh territoriyakh Rossii i Belarusi (ASPA Rossiya-Belarus') [The atlas of modern and forecast aspects of consequences of the Chernobyl accident in affected territories of Russia and Belarus (AMFA Russia-Belarus)]. Eds.: Yu.A. Izrael’, I.M. Bogdevich. Moscow-Minsk, Infosfera Fund-Priroda Publ., 2009. 139 p.

4. Perepechina Yu.I. Glushenkov O.I., Korsikov R.S., Glushenkov I.S. Tasks of inventory of Russian forests during the second cycle. Aktual’nyye problemy lesnogo kompleksa – Actual Problems of the Forest Complex, 2020, no. 56, pp. 67-72. (In Russian).

5. Marchenko T.A., Radin A.I., Razdaivodin A.N. Retrospective and current state of forest territories of the border areas of the Bryansk region exposed to radioactive contamination. Radiatsionnaya Gygiena – Radiation Hygiene, 2020, vol. 13, no. 2, pp. 6-18. (In Russian).

6. 35 let Chernobyl’skoy avarii. Itogi i perspektivy preodoleniya eye posledstviy v Rossii 1986-2021. Rossiyskiy natsional’nyy doklad [35 years of the Chernobyl accident. Results and prospects of overcoming its consequences in Russia 1986-2021. Russian national report]. Ed.: L.A. Bolshov. Moscow, 2021. 104 p.

7. Kurnayev S.F. Osnovnyye tipy lesa sredney chasti Russkoy ravniny [The main types of forests in the middle part of the Russian Plain]. Moscow, MAIK "Nauka/Interperiodika", 1968. 356 p.

8. Ramzaev V.P., Barkovsky A.N., Bratilova A.A., Gromov A.V., Titov N.V. Assessment of annual effective dose from external exposure in forests of the south-western districts of the Bryansk region of Russia: 2015-2021. Radiatsionnaya Gygiena – Radiation Hygiene, 2022, vol. 15, no. 3, pp. 58-71. (In Russian).

9. Ramzaev V., Barkovsky A., Vodovatov A., Bernhardsson C., Jönsson M., Dvornik A., Gaponenko S. Calculation of the effective external dose rate to a person staying in the resettlement zone of the Vetka district of the Gomel region of Belarus based on in situ and ex situ assessments in 2016-2018. J. Environ. Radioact., 2020, vol. 214-215, pp. 106168. DOI: 10.1016/j.jenvrad.2020.106168.

10. Otraslevoye soglasheniye po lesnomu khozyaystvu Rossiyskoy Federatsii na 2022-2024 gody [Sectoral agreement on forestry of the Russian Federation for 2022-2024]. Available at: https://mintrud.gov.ru/docs/agreements/1899?ysclid=llpkjjnys9701902483 (Accessed 24.08.2023).

11. Radiation Safety Standards (RSS-99/2009). Sanitary-epidemiological rules and standards SanPin 2.6.1.2523-09. Moscow, Federal Center of Hygiene and Epidemiology of Rospotrebnadzor, 2009. 100 p. (In Russian).

12 Bruk G.Ya., Bazyukin A.B., Bratilova A.A., Vlasov A.Yu., Gromov A.V., Zhesko T.V., Kaduka A.N., Kaduka M.V., Kravtsova O.S., Romanovich I.K., Saprykin K.A., Stepanov V.S., Titov N.V., Yakovlev V.A. The average accumulated effective doses (1986-2016) for the population of the settlements of the Russian Federation attributed to the zones of radioactive contamination according to the Russian Federation government resolution “On the approval of the list of the settlements being in the borders of the zones of radioactive contamination due to the Chernobyl NPP accident” N 1074 of 08.10.2015. Radiatsionnaya Gygiena – Radiation Hygiene, 2017, vol. 10, no. 2, pp. 57-105. (In Russian).

13. Panov A.V. Returning radioactively contaminated territories to normal life: current problems and ways for solution (35 years after the Chernobyl NPP accident). Mediko-biologicheskie i sotsial’no-psikhologicheskie problem bezopasnosti v chrezvychainykh situatsiyakh – Medico-Biological and Socio-Psychological Problems of Safety in Emergency Situations, 2021, no. 1, pp. 5-13. (In Russian).

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