Development of safety design philosophy of HTTR-Heat Application Test Facility

Aoki, Takeshi  ; Shimizu, Atsushi ; Noguchi, Hiroki  ; Kurahayashi, Kaoru; Yasuda, Takanori; Nomoto, Yasunobu ; Iigaki, Kazuhiko ; Sato, Hiroyuki  ; Sakaba, Nariaki 

The safety design philosophy is developed for the HTTR (High Temperature Engineering Test Reactor) heat application test facility connecting high temperature gas-cooled reactor (HTGR) and the hydrogen production plant. The philosophy was proposed to apply proven conventional chemical plant standards to the hydrogen production facility for ensuring public safety against anticipated disasters caused by high pressure and combustible gases. The present study also proposed the safety design philosophy to meet specific safety requirements identified to the nuclear facilities with coupling to the hydrogen production facility such as measures to ensure a capability of normal operation of the nuclear facility against a fire and/or explosion of leaked combustible material, and fluctuation of amount of heat removal occurred in the hydrogen production plant. The safety design philosophy will be utilized to establish its basic and detailed designs of the HTTR-heat application test facility.