The aim of this work is to perform a comparative analysis of the biohazard for the population of long-lived fission products and actinides from BREST-OD-300 reactor spent fuel taking account of the time required for different radionuclides to reach Earth’s surface by migrating from a deep disposal site. It was found that the biohazard of fission products is significantly greater than that of actinides for a long time (20000 years according to the accepted scenario of radionuclide migration). The radiological impact on the population is predicted after 99Tc – radionuclide with high migration capability – reaches the soil surface. 137Cs and 90Sr will not appreciably affect the dose load because of their relatively short half-life. In order to maintain radio-ecological balance between long-lived wastes and native uranium during the entire possible time period, it is sufficient to extract from the BREST-OD-300 spent fuel 90% of the technetium and 75% of the americium with 99.9% of the fissile materials extracted.
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Translated from Atomnaya Énergiya, Vol. 123, No. 2, pp. 100–103, August, 2017.
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Spiridonov, S.I., Perevolotskii, A.N., Perevolotskaya, T.V. et al. Analysis of the Human Biohazard of Long-Lived Fission Products and Actinides for BREST-OD-300 Spent Fuel. At Energy 123, 122–126 (2017). https://doi.org/10.1007/s10512-017-0312-2
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DOI: https://doi.org/10.1007/s10512-017-0312-2