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Assessment of forms of existence of Chernobyl radionuclides in bottom sediments of cooling pond of the ChNPP
V. P. Protsak1, O. O. Odintsov2
1Ukrainian Institute of Agricultural Radiology, National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine
2Institute of Safety Problems of Nuclear Power Plants, National Academy of Sciences of Ukraine, Chornobyl, Ukraine
Abstract: Assessment of forms of existence of radionuclides 90Sr, 137Cs, 238Pu, 239,240Pu, 241Am and dispersal composition of fuel particles in bottom sediments of cooling pond of the ChNPP is carried out. According to the results of research in the year of 2012, more than 98% of radionuclides in bottom sediments were in non-exchangeable state, while the fuel particles can be composed from about 70% 90Sr or more than 80% 241Am and of the plutonium isotopes. Obtained results indicate the selective leaching of radionuclides from the matrix of fuel particles.
Keywords: sequential leaching of radionuclides, forms of radionuclides, radioactive contamination of sediments of cooling pond of the ChNPP, dispersion distribution of the fuel particles.
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