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Mizukoshi, Seiji; Sukegawa, Takenori
Dekomisshoningu Giho, (34), p.26 - 39, 2006/09
Technical information including available dismantling technologies and residual radioactive contamination is required to establish safety standards for the regulatory review for the future decommissioning of nuclear fuel cycle facilities. We have acquired the technical information on the past and on-going decommissioning projects of domestic and foreign uranium enrichment facilities and spent fuel reprocessing facilities. This report introduces the information and the study on the safety issues concerning the decommissioning.
Mizukoshi, Seiji; Oshima, Soichiro; Shimada, Taro
JAERI-Tech 2005-011, 122 Pages, 2005/03
The radiological and physical characteristic on decommissioning, such as component and structure weights and radioactivity of the 1.1 MWe class reference nuclear power plants summarized in the NUREG reports of the US NRC were classified,arranged and compared with the domestic commercial nuclear power plants and JPDR from a view point of dismantling plan and waste management for decommissioning. As the results, it was found that the radioactive component and structure weights was about 28,000ton、and non-radioactive structure weights was about 124,000ton less than the domestic commercial BWR. And it was found that this differences has mainly influenced dismantling costs for decommissioning. Farther, it was found that the concrete element composition rates of B, Ni, Nb and so were differerence of one or more figures btween the reference nuclear power plants and the domestic commercial PWR or JPDR.Also,it was found that the this difference became about two or three times by radioactivity concentration and has mainly influenced transport and disposal costs for decommissioning.
Mizukoshi, Seiji; Sukegawa, Takenori; Nakayama, Shinichi
no journal, ,
Technical information including available technologies and residual radioactive contamination is required to establish safety standards for regulatory review for the future decommissioning of nuclear fuel facilities. We have acquired the technical information on the past and on-going decommissioning projects of domestic and foreign nuclear fuel facilities. This report presents the information and the study on the safety issues concerning the decommissioning of fuel reprocessing facilities.