Plant data evaluation of performance confirmation test in HTTR after Tohoku-Pacific Ocean Earthquake

Ono, Masato ; Tochio, Daisuke ; Shinohara, Masanori ; Shimazaki, Yosuke ; Yanagi, Shunki; Iigaki, Kazuhiko 

Tohoku-Pacific Ocean Earthquake occurred on March 11th 2011 and the earthquake intensity of an upper 5 on the Japanese scale was observed in Oarai town. HTTR conducted the confirmation test on cold state in order to ensure the facilities/instruments of reactor building operate normally. In this test, the plant data in the facilities/instruments start up phase and continue steady operation phase were measured and compared with the previous operation data, and the soundness of facilities/instruments is evaluated. As a result, the facilities/instruments operate normally and keep safety and performance of the HTTR were ensured. This paper reports the evaluation of the plant data.