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Report No.

HTTR-GT/H$$_{2}$$ test plant; System design

Yan, X. ; Sato, Hiroyuki  ; Sumita, Junya ; Nomoto, Yasunobu; Horii, Shoichi; Imai, Yoshiyuki  ; Kasahara, Seiji  ; Suzuki, Koichi*; Iwatsuki, Jin ; Terada, Atsuhiko  ; Tachibana, Yukio ; Ono, Masahiro*; Yamada, Shinichi*; Suyama, Kazumasa*

Pre-licensing basic design for a cogenerating HTGR test plant system is presented. The plant to be coupled to existing 30 MWt 950$$^{circ}$$C test reactor HTTR is intended as a system technology demonstrator for GTHTR300C plant design. More specifically the test plant of HTTR-GT/H$$_{2}$$ aims to (1)demonstrate the licensability of the GTHTR300C for electricity production by gas turbine and hydrogen cogeneration by thermochemical process and (2) confirm the operation control and safety of such cogeneration system. With construction and operation completion by 2025, the test plant is expected to be the first of a kind HTGR-powered cogeneration plant operating on the two advanced energy conversion systems of closed cycle helium gas turbine for power generation and thermochemical iodine-sulfur water-splitting process for hydrogen production.



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