Abstract
Radiotoxicity behavior of WWER-1000 reactor high burnup spent nuclear fuelis discussed by the authors. Radionuclides concentrations as function of nuclear fuel burn up to 68 MWt day/kg for 4,81 % initial enrichment have been calculated on the base of approximation relations of Regulation RB-093-14 (Moskow, 2014). Time dependences of fission products and actinides activities and radiotoxicity behavior were derived at different stages: in case of spent nuclear fuel is disposed in intermediate storage facility and when it will transmit in geological repository.
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