[2N05-09] sodium-cooled reactor

[2N09] A DRACS concept design and development of thermal-balance analysis cod for small modular natural circulation lead coolant fast reactor

＊YANG XIAO¹, AKIRA YAMAGUCHI², TAKESHI FUKUDA¹ (1. Osaka university, 2.University of Tokyo )

Keywords:DRACS design, natural circulation, small modular reactor

A new concept of DRACS for SFR was designed and system reliability was investigated. the Steady state calculation shown that core power loss could be avoid under normal operation, cladding temperature is 824K while max. mass flow is 249 kg/s under catastrophic. The safety, reliability and economy of core system could be improved via this new DRACS concept design.