After the accident of Chernobyl NPP #4 1986, various activities including the construction of the shelter, prevention of the release of radioactive dust and liquid from the shelter, monitoring the condition of the damaged core, and disposal of radioactive waste have been impl emented in the Chernobyl site for mitigating the nuclear and radioactive risks of damaged nuclear facilities, and the reducing radiation dose of working personnel. The construction of new shelter started for the decommissioning of the...
英字タイトル:
Post-processing Activities after Chernobyl Accident in Ukraine and LessonLearned to the Response on Fukushima Dai-Ichi Accident

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 ...
英字タイトル:
Response for Flooding and Effort of Plant Restart at Fort Calhoun NPP

In USA, maintenance rule (10CFR50.65), issued in 1991, was risk informed performance base rule and required the utilities to observe whether the effectiveness of maintenance program was maintained continuously. Industry developed the guidance NUMARC 93-01in order to respond the requirements of maintenance rule efficiently. Deregulation of electric power at second half of 1990 forced the utilities to optimize the maintenance in view of not only safety but also economic performance. Industry develop Stan...
英字タイトル:
The Advancement of Maintenance for Nuclear Power Plant in USA