Safety measures at Tokai Reprocessing Plant during the decommissioning phase, 3; Overview of safety measures against internal hazards at High Active Liquid Waste Storage Facility (HAW) and Tokai Vitrification Facility (TVF)

Inose, Kenta; Ouchi, Masayuki; Tobita, Ryuto; Aoki, Kenji; Asada, Naoki ; Kusaka, Shota; Morita, Kazuki; Oyama, Koichi ; Sumi, Hirotaka; Nakabayashi, Hiroki 

At the Tokai Reprocessing Plant, safety measures have been taken to maintain important safety functions in the High Active Liquid Waste Storage Facility (HAW) and Tokai Vitrification Facility (TVF), which handle high active liquid waste, in accordance with new regulatory requirements and assuming the occurrence of internal events such as fire and flooding. Fire prevention measures were taken to prevent the occurrence of fires, detect and extinguish fires, and mitigate the impact of fires. Flooding measures were taken to effects of submersion, water coverage, and steam due to flooding. In addition to measures against internal hazards, measures for external hazards and accident response measures have been completed, improving the safety of the HAW and TVF.