Current status of the Fukushima Daiichi NPS and Fukushima Daini NPS after the earthquake (M7.3) at the offshore of Sanriku at 5:18 pm on December 7, 2012.
[As for the Fukushima Daiichi Nuclear Power Station]
After the earthquake occurred at 5:18 pm on December 7, 2012, we have conducted field patrols at the Fukushima Daiichi Nuclear Power Station, and have found there was no problem.
* We will conduct field patrols for the equipments of the cooling system on the outside and the monitoring posts of Units 5 and 6 on December 8.
[As for the Fukushima Daiichi Nuclear Power Station]
After the earthquake occurred at 5:18 pm on December 7, 2012, we have conducted checkups at the Fukushima Daini Nuclear Power Station, and have found there was no problem.
Since we had found positive pressure in the reactor building of Unit 1, we have started Stand by Gas Treatment System* (the pressure was 0.05 kPa at that time of the start), and confirmed negative pressure in the reactor building. The negative pressure has been kept currently. We will conduct inspections for the cause of this matter.
The fluctuation of the monitoring post readings is being maintained within the range of normal fluctuation before and after the earthquake and currently no radiation impact to the outside of the power station has been reported due to the earthquake. The Unit 1 of Fukushima Daini Nuclear Power Station is under the cold shutdown condition and there is no problem.
* Stand by Gas Treatment System: System that discharges air from the reactor building through exhaust stack to the outside. There are two systems; A and B.
© Tokyo Electric Power Company Holdings, Inc.
