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» Fault line beneath Tsuruga nuclear plant is indeed active

A fault line beneath the No. 2 reactor of the Tsuruga nuclear power plant is indeed active, an expert panel of the Nuclear Regulation Authority concluded Nov. 19, drawing criticism from the plant’s operator.

Japan Atomic Power Co. vowed to challenge the panel’s conclusion, which, if it stands, would force the company to decommission the reactor under new safety rules.
The NRA in May 2013 pointed out the possibility that the fault line beneath the No. 2 reactor building of the Tsuruga plant in Fukui Prefecture could move in conjunction with the nearby Urasoko active fault.

Japan Atomic Power, citing its own survey results, said the fault under the reactor was not connected to the Urasoko fault’s branch and was not active.

After reassessing the conditions at the Tsuruga plant, the expert panel said in its draft report Nov. 19 that the fault under the reactor building “could move in the future,” repeating the NRA’s stance last year.

The NRA is expected to finalize the draft after it is examined by other experts.

Under stricter safety standards introduced after the Fukushima nuclear crisis triggered by the March 2011 Great East Japan Earthquake and tsunami, reactor buildings cannot be built directly above active faults. Japan Atomic Power will likely be unable to restart the No. 2 reactor unless the panel’s draft report is dismissed.

<Media Report>
Nuclear watchdog panel: Fault under Tsuruga reactor is active(Asahi Newspaper)


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