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Keyword：Nuclear Regulation Authority of Japan
Japan's regulator says steam leak at Mihama Nuclear Power Plant Unit 3 was "avoidable"
On August 19, Japan's Nuclear Regulation Authority (NRA) released the results of its nuclear regulatory inspections for the first quarter of the current fiscal year, determining that the steam leak incident at Mihama Nuclear Power Plant Unit 3, operated by Kansai Electric Power Co., in May this year was "foreseeable within a reasonable range" and that the associated losses "could have been avoided." The incident occurred in the high-pressure turbine area of Mihama Unit 3. A small hole approximately 8 centimeters long and 1 centimeter wide appeared in the metal cover atop the high-pressure turbine casing, causing a steam leak that forced a manual reactor shutdown. In its assessment, the NRA concluded that the event was foreseeable and could have been prevented through appropriate management or maintenance measures. However, since no pipe rupture or fire occurred between the onset of the steam leak and the reactor shutdown, the NRA rated the significance and severity of the incident at the lowest of four levels.
2026-08-20
Kansai Electric's Dry Cask Storage Project for Spent Fuel at Three Fukui Nuclear Plants Accelerates
Kansai Electric Power Company (KEPCO) plans to construct dry cask storage facilities for spent fuel at the sites of its three nuclear power plants in Takahama, Oi, and Mihama in Fukui Prefecture, Japan, and the local approval process for the project has recently accelerated. According to local arrangements, in addition to regulatory review, the project requires prior consent from the Fukui Prefectural Government and the towns where the nuclear plants are located. The Nuclear Regulation Authority (NRA) of Japan has completed safety reviews of the dry cask storage facility plans for the Takahama and Mihama nuclear power plants, while the plan for the Oi plant remains under review. Takahama Town Mayor Hisakatsu Nishijima...
2026-08-20