Development of core design optimization process in ARKADIA, 1; Optimization study by integrated analysis with neutronics and plant dynamics

Hamase, Erina ; Kuwagaki, Kazuki  ; Doda, Norihiro  ; Yokoyama, Kenji   ; Tanaka, Masaaki  

A core design optimization process is developed as part of the design optimization support tool named ARKADIA-Design for an efficient and innovative core design process. The process comprises analyses integrated by neutronics, thermal-hydraulics in a fuel assembly, fuel integrity, and plant dynamics for safety assessment. The core design optimization problem in the sodium-cooled fast reactor that achieves to the prevention of the core damage during ULOF and the high core performance was set as a representative problem. The automatic optimization with integrated analysis between neutronics and plant dynamics by using the PSSP of ARKADIA-Design was realized. The prospect of applying this process to the core design was confirmed.