Presentation Information

[3F03]Development of Probabilistic Risk Assessment Methods for multiple tanks and multiple events at the Rokkasho Reprocessing Plant(5)Consideration of importance evaluation method that takes into account radiation exposure effects for evaluation systems with three or more storage tanks

*Masahiro Yamamoto1,4, Kazumi Takebe1, Takashi Kodama1, Futoshi Tanaka2, Asei Kawasaki3, Hidetaka Nagata2, Isao Hongo2, Makoto Takahashi4 (1. JNFL, 2. MHI, 3. MHI NSE, 4. Tohoku Univ.)

Keywords:

PRA,Multiple units,Multiple events,Reprocessing Plant

In order to identify vulnerable points of equipments andoperations related to severe accidents by utilizing riskassessment, we are developing a method that canaccurately evaluate the frequency of simultaneousoccurrence of multiple tanks and multiple events.
In this paper, based on the previous report, we report on the results of examining a method for evaluating importance that takes into account the effects of radiation exposure during an accident, for evaluation systems that target three or more storage tanks.