STUDY ON INFLUENCE OF NUCLEAR FUEL MATERIAL MANAGEMENT AND TRANSFER SCENARIOS ON DECOMMISSIONING

摘要

The Japanese electric utilities are required to prepare plans to transfer its nuclear fuel material by the end of the decommissioning period. (1) There can be several scenarios regarding the management and transfer of nuclear fuel material. It is necessary to fully understand the characteristics of individual scenarios so that the most suitable method can be selected according to the conditions specific to each plant. We have examined how the nuclear fuel material management and transfer scenarios cause influences on the decommissioning and evaluated the characteristics (advantages and disadvantages) of each scenario. We expect that the result of this study will be useful for a nuclear power station which plans decommissioning to choose a suitable and effective scenario for the nuclear fuel material management and transfer. Nuclear fuel material management refers to the handling, storing or keeping of nuclear fuel during the required period until a decommissioning plant completes transporting nuclear fuel material to outside the nuclear power plant for decommissioning. (1) Nuclear fuel material transfer refers to the transportation of the nuclear fuel material to other domestic facilities of the nuclear power utility under the restriction law for nuclear reactors etc, or overseas facilities. (1)