PRA on mixed foreign substances into core of Japanese prototype FBR
西村 正弘; 深野 義隆; 栗坂 健一; 鳴戸 健一*
Nishimura, Masahiro; Fukano, Yoshitaka; Kurisaka, Kenichi; Naruto, Kenichi*
Fuel subassemblies of fast breeder reactors (FBRs) are densely arranged and have high power densities. Therefore, the local fault (LF) has been considered as one of the possible initiating events of severe accidents. According to the LF evaluation under the condition of total flow blockage of one sub-channel in the analyses of design basis accident (DBA) for Monju, it was confirmed that the pin failures were limited locally without severe core damage. In addition, local flow blockage (LB) of 66% central planar in the subassembly was investigated as one of the beyond-DBA. However, it became clear that these deterministic analyses were not based on a realistic assumption by experimental studies. Therefore, PRA on LF which was initiated from LB was performed reflecting the state-of-the-art knowledge in this study. As the result, damage propagation from LF caused by LB in Monju can be included in CDF of ATWS or PLOHS in the viewpoint of both probability and consequence.
使用言語 : English
掲載資料名 : Proceedings of 13th Probabilistic Safety Assessment and Management Conference (PSAM-13) (USB Flash Drive)
ページ数 : 12 Pages
発行年月 : 2016/10
出版社名 :
発表会議名 : 13th International Conference on Probabilistic Safety Assessment and Management (PSAM-13)
開催年月 : 2016/10
開催都市 : Seoul
開催国 : Korea
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キーワード : no keyword
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登録番号 : BB20160716
抄録集掲載番号 : 45000085
論文投稿番号 : 18421
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