Development of ARKADIA for the innovation of advanced nuclear reactor design process (Development of the design optimization support tool, ARKADIA-Design)

Tanaka, Masaaki  ; Doda, Norihiro  ; Hamase, Erina ; Kuwagaki, Kazuki  ; Mori, Takero ; Okajima, Satoshi ; Kikuchi, Norihiro  ; Yoshimura, Kazuo; Matsushita, Kentaro  ; Hashidate, Ryuta ; Yada, Hiroki 

To assist conceptual studies of various reactor systems conducted by private sectors in nuclear power innovation, an innovative design system named ARKADIA (Advanced Reactor Knowledge- and AI-aided Design Integration Approach through the whole plant lifecycle) has been developed. In this paper, focusing on the ARKADIA-Design, achievements in the development of optimization processes in the fields of the core design, the plant structure design, and the maintenance schedule planning, as major function of ARKADIA-Design, and numerical analysis methods including coupled analysis to be used for the detailed analysis to confirm the plant performance after optimization are introduced at this point in time.