Research and development of margin assessment methodology of decay heat removal function against external hazards, 8; Event sequence assessment methodology against wind hazard

Kurisaka, Kenichi ; Yamano, Hidemasa   ; Nishino, Hiroyuki  

This study aims at developing the probabilistic risk assessment methodology of decay heat removal function in sodium-cooled fast reactor systems against wind hazard. For this purpose, wind hazard curve was evaluated; event trees were developed to identify the strong wind induced core damage sequence; core damage frequency was quantified, and dominant sequence was evaluated.