米フォートカルホーンの洪水時の対応と再稼動への取り組み
Response for Flooding and Effort of Plant Restart at Fort Calhoun NPP
著者:
藤井 有蔵 Yuzo FUJII 水町 渉 Wataru MIZUMACHI 奈良林 直 Tadashi NARABAYASHI
発刊日:
公開日:
Confirmatory Action LetterFort CalhounIMC-0350Key WordsPlant RestartResponse to Flooding
概要
Fort Calhoun NPP(FCNPP) experienced flood due to the elevation of water level of Missouri river from June to August, 2011. FCNPP took various responses including constructing the berm around the important facilities, and could maintain the safety of the reactor with difficulty. The response of FCNPP, which includes both good and bad aspects, will help us in examining the response to flooding at Japanese nuclear plants. In response to the occurrence of the fire of safety related breaker at FCNPP, June 2011, NRC entered the oversight for FCNPP based on the Inspection Manual Chapter-0350 and issued the Confirmatory Action Letter (CAL) with the check list to Omaha Public Power District (OPPD), owner of FCNPP. Check list described the items which OPPD should solve before the restart of FCNPP. Although many efforts need to be done by OPPD to solve the check list, there is transparency about the condition of the plant restart. In Japan all the plants except Ohi3,4 have continued to shut down after Fukushima accident due to the lack of the rule for restarting of the plant after the occurrence of the safety problem. We should study the plant restart system of NRC.
