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, Russian   Periodicity: 4 times per year   Open access peer reviewed journal

Full text (ru)

Abstract: Assessment is given of area and behavior of large wildfire in the Chornobyl Exclusion Zone (ChEZ) which has been burning during April 27 - 29, 2015. Levels of radionuclide contamination of combustible material show that expected effective dose of firefighters during one fire-line hour did not exceed 0.64 μSv in case of external exposure and 0.37 μSv in case of internal exposure. It is shown that the expected effective dose of internal exposure of firefighters during suppression of wildfires in ChEZ was below the dose from external exposure. At the moment exposures of ⁹⁰Sr and ²⁴¹Pu (along with ^238-240Pu and ²⁴¹Am) make the most significant contribution to the internal dose of firefighters during forest and grassland fires suppression in the ChEZ.

Keywords: ⁹⁰Sr, ¹³⁷Cs, plutonium, americium, radioecology, radionuclides contamination, the Chornobyl accident, exclusion zone, forest ecosystems, forest fires, grass fires, radiation dose.

1. Y. Thiry, C. Colle, V. Yoschenko et al. Impact of Scots pine (Pinus sylvestris L.) plantings on long term ¹³⁷Cs and ⁹⁰Sr recycling from a waste burial site in the Chernobyl red Forest. J. of Environmental Radioactivity 100(12) (2009) 1062. https://doi.org/10.1016/j.jenvrad.2009.05.003

2. V.I. Yoschenko, V.A. Kashparov, V.P. Protsak et al. Resuspension and redistribution of radionuclides during grassland and forest fires in the Chernobyl exclusion zone: part I. Fire experiments. J. of Environmental Radioactivity 86(2) (2006) 143. https://doi.org/10.1016/j.jenvrad.2005.08.003

3. A.N. Perevolotskij. ¹³⁷Cs and ⁹⁰Sr Distribution in the Forest Biogeocenoses (Gomel: RNIUP «Institut Radiologii», 2006) 255 p. (Rus)

4. V.A. Kashparov, S.M. Lundin, A.M. Kadygrib et al. Forest fires in the territory contaminated as a result of the Chernobyl accident: radioactive aerosol resuspension and exposure of fire-fighters. J. of Environmental Radioiactivity 51 (2000) 281. https://doi.org/10.1016/S0265-931X(00)00082-5

5. V.I. Yoschenko, V.A. Kashparov, S.E. Levchuk et al. Resuspension and redistribution of radionuclides during grassland and forest fires in the Chernobyl exclusion zone: part II. Modeling the transport process. J. of Environmental Radioactivity 87(3) (2006) 260. https://doi.org/10.1016/j.jenvrad.2005.12.003

6. E. Garger. Secondary Lifting of Radioactive Aerosols in the Atmospheric Boundary Layer (Chernobyl: Institut Problem Bezopasnosti AES NAN Ukrainy, 2008) 192 p. (Rus) Book

7. S.І. Azarov, V.L. Sidorenko, O.V. Rudenko. The study of the radionuclides entering process into the air during fires in the forests of the ChNPP Exclusion Zone. Problemy Pozharnoj Bezopasnosti 30 (2011) 16. (Ukr) Article

8. IAEA Safety Standards for protecting people and the environment. Radiation Protection and Safety of Radiation Sources: International Basic Safety Standards. Interim edition. General Safety Requirements Part 3 No. GSR Part 3 (Vienna: IAEA, 2011) 303 p. Report

9. K.F. Eckerman, J.C. Ryman. External exposure to radionuclides in air, water, and soil. In: Federal guidance report No. 12, EPA-402-R-93-081 (Oak Ridge National Laboratory, Tennessee 37831, USA, 1993) 238 p. Report

10. N. Evangeliou, S. Zibtsev, V. Myroniuk et al. Resuspension and atmospheric transport of radionuclides due to wildfires near the Chernobyl Nuclear Power Plant in 2015: An impact assessment. Sci. Reports 6 (2016) 26062. https://doi.org/10.1038/srep26062

11. D. Bugai, L. Dewiere, V. Kashparov, N. Ahamdach. Strontium-90 transport parameters from source term to aquifer in the Chernobyl Pilot Site. Radioprotection - Colloques 37-C1 (2002) 11. Article

12. V. Kashparov, V. Yoschenko, S. Levchuk et al. Radionuclide migration in the experimental polygon of the Red Forest waste site in the Chernobyl zone. Part 1: Characterization of the waste trench, fuel particle transformation processes in soils, biogenic fluxes and effects on biota. Applied Geochemistry 27(7) (2012) 1348. https://doi.org/10.1016/j.apgeochem.2011.11.004

13. Radiation Safety Standards of Ukraine (NRBU-97) (Kyiv, 1998). (Ukr) http://www.insc.gov.ua/docs/nrbu97.pdf

14. Handbook of Parameter Values for the Prediction of Radionuclide Transfer in Terrestrial and Freshwater Environments. Report IAEA-TRS-472 (Vienna, 2010) 194 p. Report

15. Tables and Models of Growth and Productivity of Forests of Major Forest Forming Species of Northern Eurasia (Standard and Reference Materials) (Moscow, Federal Agency of Forest Management and International Institute for Applied Systems Analysis, 2008) 886 p. Book

16. N. Evangeliou, Y. Balkanski, A. Cozic et al. Wildfires in Chernobyl-contaminated forests and risks to the population and the environment: A new nuclear disaster about to happen? Environment International 73 (2014) 346. https://doi.org/10.1016/j.envint.2014.08.012