Measures to Improve Robustness of Primary Containment Vessel and Operation of Filtered Containment Venting System Based on the Lessons from the Containment Leak at Fukushima Dai-ichi Nuclear Power Station Unit 2

Abstract

Shinichi KAWAMURA, Suguru OOKI and Tadashi NARABAYASHI Nuclear Asset Management Department, Tokyo Electric Power Company, 1-1-3 Uchisaiwai-cho, Chiyoda-ku, Tokyo 100-8560, Japan R&D Department, TEPCO Research Institute, Tokyo Electric Power Company, 4-1 Egasaki-cho, Tsurumi-ku, Yokohama 230-8510, Japan Division of Energy and Environmental Systems, Graduate School of Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-ku, Sapporo 060-8628, Japan (Received September 29, 2015; accepted in revised form November 6, 2015; published online March 15, 2016)