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Umemoto, Michitaka*; Kumagai, Yoshio*; Ishigami, Tsutomu; Muramatsu, Ken
Chiiki Anzen Gakkai Rombunshu, 7, p.341 - 350, 2005/11
no abstracts in English
Sato, Sohei; Umemoto, Michitaka*; Homma, Toshimitsu
JAERI-Data/Code 2005-009, 114 Pages, 2005/09
JAERI-Data-Code-2005-009.pdf:6.64MB
JAERI has conducted the analytical studies on the PSA, the severe accidents, and the optimization of protective actions. Based on the results of these studies, JAERI is investigating the method for taking urgent protective actions more reasonably. If an accident occurs in a NPP, early protective actions are carried out. To implement these actions more effectively, emergency preparedness and emergency planning are important, and especially prompt evacuation is expected to reduce a large amount of radiation exposures. To examine the effect of early protective measures by using a PSA method, estimation of the parameter uncertainty related in the time for early protective actions is needed. For this purpose, we have developed an analytical method for urgent protective actions, and estimated the movement distance. This report provides a brief description of the method for estimating the movement distance, input data for this analysis, and the result. Moreover, the problem on the method of evacuation distance analysis and usefulness of this method for emergency planning were discussed.
Ishigami, Tsutomu; Kobayashi, Kensuke; Umemoto, Michitaka; Matsunaga, Takeshi
Reliability Engineering & System Safety, 86(1), p.61 - 74, 2004/10
Times Cited Count：3 Percentile：12.11(Engineering, Industrial)no abstracts in English
Umemoto, Michitaka; Ishigami, Tsutomu; Kobayashi, Kensuke
Chiiki Anzen Gakkai Rombunshu, 4, p.231 - 240, 2002/11
no abstracts in English
Umemoto, Michitaka; Kobayashi, Kensuke; Ishigami, Tsutomu; Watanabe, Minoru*
Chiiki Anzen Gakkai Kogaishu, 10, p.113 - 116, 2000/11
On September 30 in 1999, the reactivity accident occurred at the Tokai uranium processifn facility of J. C. O. Co. Ltd(JCO) at Tokai-mura, Japan. Before the accident had been brought under control, the local authorities evacuated the population living within a few hundred meters and advised people within 10km of the facility to take shelter for a period of about one day. Questionnaires were conducted to know when, where and how the inhabitants received the information of protective action requests from the local authories and how they responded to the requests.
Ebisawa, Katsumi; Shibata, Katsuyuki; Muramatsu, Ken; Umemoto, Michitaka
Chikyu Wakusei Kagaku Knren Gakkai 1998-Nen Godo Taikai Yokousyu, p.22 - 23, 1998/00
no abstracts in English
Umemoto, Michitaka; *; Kobayashi, Kensuke; Ishigami, Tsutomu; *; *; *
Chiiki Anzen Gakkai Rombun Hokokushu, (7), p.228 - 233, 1997/11
no abstracts in English
