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Report No.
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Development of plant lifecycle optimization method, ARKADIA for advanced reactors

Uchibori, Akihiro ; Sogabe, Joji ; Okano, Yasushi; Takata, Takashi*; Doda, Norihiro  ; Tanaka, Masaaki  ; Enuma, Yasuhiro  ; Wakai, Takashi ; Asayama, Tai ; Ohshima, Hiroyuki

The ARKAIDA has been developed to realize automatic optimization of plant design from safety evaluation for the advanced reactors represented by a sodium-cooled fast reactor. ARKADIA-Design offers functions to support design optimization both in normal operating conditions and design basis events. The multi-level simulation approach by the coupled analysis such as neutronics, core deformation, core thermal hydraulics was developed as one of the main technologies of the ARKADIA-Design. On the other hand, ARKAIDA-Safety aims for safety evaluation considering severe accidents. As a key technology, the numerical methods for in- and ex-vessel coupled phenomena during severe accidents in sodium-cooled fast reactors were tested through a hypothetical severe accident event.

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