^〇Katsuhiko Fujii¹, Koji Fukuya¹ (1.Institute of Nuclear Safety System, Inc.)

^〇Kuniki HATA¹, Jinya KATSUYAMA¹, Tomoaki TAKEUCHI¹, Yutaka NISHIYAMA¹, Kunio ONIZAWA¹ (1.Japan Atomic Energy Agency)

^〇Tohru Tobita¹, Makoto Udagawa¹, Yutaka Nishiyama¹, Kunio Onizawa¹ (1.Japan Atomic Energy Agency)

^〇Dongyue Chen¹, Kenta Murakami¹, Kenji Dohi², Kenji Nishida², Naoki Soneda², Naoto Sekimura¹ (1.The University of Tokyo, Department of Nuclear Engineering and Management, 7-3-1 Hongo Bunkyo-ku,Tokyo 113-8656, Japan, 2.Central Research Institute of Electric Power Industry, 2-11-1 Iwado-kita, Komae, Tokyo 201-8511, Japan)