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Report No.

Conceptual plant system design study of an experimental HTGR upgraded from HTTR

Ohashi, Hirofumi ; Goto, Minoru ; Ueta, Shohei  ; Sato, Hiroyuki ; Fukaya, Yuji  ; Kasahara, Seiji ; Sasaki, Koei  ; Mizuta, Naoki ; Yan, X. ; Aoki, Takeshi*

Conceptual design study of an experimental HTGR is performed to upgrade the plant system from Japanese High Temperature engineering Test Reactor (HTTR) to a commercial HTGR. Safety systems of HTTR are upgraded to demonstrate the commercial HTGR concept, such as a passive reactor cavity cooling system, a confinement, etc. An intermediate heat exchanger (IHX) is replaced by a steam generator (SG) for a process heat supply to demonstrate the technology for a commercial use. This paper describes the conceptual design study results of the plant system of the experimental HTGR.



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