24 Novembre 2016
Fukushima Nuclear Power Stations Safe and Secure after a Large Earthquake: At 5:59 a.m. on November 22, a magnitude 7.4 earthquake struck off the coast of Fukushima near the two Fukushima Nuclear Power Stations, Daiichi and Daini. No abnormalities were found for each Unit of the power stations except for temporary stoppage of the cooling function at Fukushima Daini Unit 3 spent fuel pool. An alarm went off for the lowering water level of the cooling water supply tank and effectively stopped the cooling water supply. Since undulation of the cooling water from the shock of the earthquake set off the alarm, the tanks were checked over and found no damages or leakage. The operations were resumed one and a half hours later by reactivating the pump after conducting safety checks. No radiation level changes have been detected at the monitoring posts installed along each power station’s site boundary. All of the workers on site were evacuated to higher ground and no injuries have been reported at the power stations. After the tsunami warning was lifted, on-site patrols were conducted including the seaside areas of the power stations and found no abnormalities at either location.