Development of multi-level, multi-scenario simulation systems for sodium cooled fast reactor, 16; Development of integrated analysis system for in- and ex-vessel phenomena

Uchibori, Akihiro ; Aoyagi, Mitsuhiro ; Sonehara, Masateru ; Takata, Takashi  ; Ohshima, Hiroyuki

The multi-level, multi-scenario simulation systems have been developed as a fundamental technology of sodium-cooled fast reactors. In this study, a multi-scenario simulation system for in- and ex-vessel phenomena during a severe accident was newly developed. The validity of the system was confirmed through the analysis of a Loss-Of-Reactor-Level (LORL) event.