28-30 November 2019
C-CUBE, Kyushu University Chikushi Campus 九州大学筑紫キャンパス総合研究棟 (C-Cube)
Asia/Tokyo timezone
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Contribution Poster

九州大学筑紫キャンパス総合研究棟 (C-Cube) - 3階広場

Evaluation of radioactive concentration produced in electric equipments and materials on the decommissioning of nuclear power plants


  • Prof. Hirokuni YAMANISHI

Primary authors





A various cables used in nuclear power plants are treated as wastes in decommissioning. If part of them is treated as non-radioactive wastes, the amount of radioactive waste can be reduced. Furthermore, valuable resources such as copper can be recycled, and that contributes to the efficient use of resources. In this study, we have evaluated the produced nuclides in representative PWR cables by neutron irradiation calculated with the activation cross section data. As the results of evaluation, we have confirmed the possibility of the Ni-63 concentration exceeding the criterion for clearance near reactor vessel. To improve the inventory evaluation, the uncertainty evaluation of activation cross section will be important.