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Contribution to improvement of HTGR technology by using HTTR operation data

HTTR運転データによる高温ガス炉技術高度化への貢献

中川 繁昭 ; 栃尾 大輔 ; 篠原 正憲 ; 野尻 直喜 ; 西原 哲夫 ; 後藤 実 ; 高松 邦吉

Nakagawa, Shigeaki; Tochio, Daisuke; Shinohara, Masanori; Nojiri, Naoki; Nishihara, Tetsuo; Goto, Minoru; Takamatsu, Kuniyoshi

As for the research and development concerning of the reactor technologies to develop the commercial HTGR system, the research to establish and upgrade basic technologies for the HTGRs has been progressing by using the High Temperature Engineering Test Reactor (HTTR). The HTTR is a graphite moderated and thermal neutron reactor with thermal power of 30 MW and reactor outlet coolant temperature of 950 $$^{circ}$$C in maximum. The 30 day long-term operation test with outlet coolant temperature of 850 $$^{circ}$$C was carried out. Through those operations, basic performance data of the prismatic block typed HTGR concerning the burn-up performance, primary helium purity management, high temperature component performance, integrity of core component, etc., have been accumulating. In this paper, the major result of the HTTR 30 day long-term operation test with outlet coolant temperature of 850 $$^{circ}$$C, will be shown and its contribution to future HTGR project will be discussed.

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