Development of multi-level, multi-scenario simulation systems for sodium cooled fast reactor, 5; Development of basic module in multi-level simulation system

Doda, Norihiro  ; Araseki, Hideo; Nabeshima, Kunihiko  ; Takata, Takashi  ; Tanaka, Masaaki  ; Ohshima, Hiroyuki

JAEA has developed a multi-level plant simulation system to enhance a safety assessment technology for sodium cooled fast reactor. The system, in which high-efficient plant dynamics analyses with a one-dimensional system code and high-accurate local phenomena analyses with multi-dimensional codes are coupled, may apply to the various design options of sodium cooled reactor. In this report, the present status in the development of the basic functions in the system are reported.