Result of long-term operation of HTTR; High-temperature/parallel-loaded 50-days operation

Tochio, Daisuke ; Hamamoto, Shimpei  ; Inoi, Hiroyuki; Shimazaki, Yosuke ; Sekita, Kenji; Kondo, Masaaki; Saikusa, Akio ; Kameyama, Yasuhiko; Saito, Kenji ; Emori, Koichi; Nishihara, Tetsuo 

In HTTR, in-service operation is conducted through the rise-to power operation with rated operation or high-temperature test operation from achievement of first criticality at 1998. To make practical use HTGR system, it must be demonstrated to supply stable heat to heat utilization system for long-term. In HTTR, high-temperature/parallel-loaded long-term operation had been performed from January 2010. As the result, it was demonstrated to supply stable heat to heat utilization system for 50 days with HTTR, moreover, various long-term operation data were gained. This paper reports the characteristics of the high-temperature long-term operation for HTTR obtained from the operation.