Radiation Safety Evaluation in the course of Transportation of BNFWWER-440 with IncreasedBurn-upFraction
Ekaterinburg, Russia In the present paper, the model of effective dose rate estimation for railway car container with spent fuel assemblies WWER-440 is discussed. The following parameters are given: enrichment, burn-up fraction, hold-up time. The model is based on estimated data on 244Cm accumulation and on results of measurements of gamma and neutron effective dose rate. On the basis of the model it is shown that in the course transportation of spent fuel assemblies WWER-440 with burn-up fraction up to 62.5 MW·days/kgUand hold-up time of 3 years and more, effective dose rates determined by НП-053-04 are not exceeded.