Japanese regulators to conduct fault survey at Fukui nuclear plant


The Nuclear Regulation Authority will carry out an on-site survey on faults under Japan Atomic Power Co.’s Tsuruga nuclear power plant in Fukui Prefecture, the regulatory commission’s secretariat said Tuesday.

The regulatory agency is considering sending a group of five experts to the plant later this month or in December, including NRA Deputy Chairman Kunihiko Shimazaki.

The survey will be conducted after the Nuclear and Industrial Safety Agency, which was replaced by the NRA in September, pointed out in April that the crush zones under the nuclear facility may move together with an active nearby fault.

The NRA plans to conduct a similar survey at Tohoku Electric Power Co.’s Higashidori nuclear plant in Aomori Prefecture, where some experts argue there are traces of a fault slip.

The five-member team will spend two days on the Tsuruga inspection in response to criticism that the NRA’s one-day fault investigation at Kansai Electric Power Co.’s Oi nuclear plant, also in Fukui, was inadequate, sources said.

The regulatory commission also plans to conduct on-site fault studies at Kansai Electric’s Mihama nuclear plant and the Japan Atomic Energy Agency’s Monju fast-breeder reactor, both in Fukui, as well as Hokuriku Electric Power Co.’s Shika nuclear plant in Ishikawa Prefecture.