Due to the Tohoku-Chihou-Taiheiyou-Oki Earthquake which occurred on March 11, 2011, TEPCO's facilities including our nuclear power stations have been severely damaged. We deeply apologize for the anxiety and inconvenience caused.
With regard to the accident at Fukushima Daiichi Nuclear Power Station, on April 17, 2011, we have compiled the roadmap towards restoration from the accident and on July 19 we accomplished the Step1 target "Radiation dose is in steady decline". Then on December 16 we confirmed the accomplishment of the Step 2 target "Release of radioactive materials is under control and radiation doses are being significantly held down".
In addition, on December 21, 2011, we have compiled the "Mid-to-long-Term Roadmap toward the Decommissioning of Fukushima Daiichi Nuclear Power Units 1-4, TEPCO".
In addition to the maintenance of the plant's stable condition, we will implement Mid-to-Long Term countermeasures towards the decommissioning of Fukushima Daiichi Nuclear Power Units 1-4 to enable evacuees to return to their homes as soon as possible and reduce the anxiety of the people in Fukushima and the whole nation as soon as possible.

Below is the status of TEPCO's nuclear power stations (Fukushima Daiichi and Fukushima Daini).

* The updates are underlined.

[Fukushima Daiichi Nuclear Power Station]
●Unit 1 to 4: Abolishment (April 19, 2012)
●Unit 5 to 6: Outage due to regular inspections before the earthquake

* At 8:02 AM on May 9, the operation was temporarily stopped at the 2nd Cesium Adsorption Apparatus in order to backwash the filter.

* At 10:00 AM on May 9, we started transferring the accumulated water from Unit 6 Turbine Building basement to the temporary tank.

* At 2:52 PM on May 3, we started transferring the accumulated water from unit 2 Turbine Building basement to the Centralized Radiation Waste Treatment Facility (Miscellaneous Solid Waste Volume Reduction Treatment Building [High Temperature Incinerator Building]). At 10:30 AM on May 9, we stopped transferring.

* Around 12:45 PM on May 9, a monitoring camera caught water squirting near the filtrate water transfer pump room located in front of the former Administration Office Building. At 1:00 PM, the pump was stopped and at 1:07 PM, the filtrate water supply valve was closed. At 1:03 PM, it was confirmed that the water leak had stopped through the monitoring camera. The surface dose rate of the leaked water was approximately 300-400μSv/h, which was equivalent to the atmosphere dose rate. Upon investigation, we found that a crack on the hose connected to the pump (for filtrate water) was causing the water leak. As the leaked water was filtrate water and it did not flow downstream of the gutter or near the water leak spot, it has been concluded that there was no water leak outside the site. The cracked hose will be replaced.

[Fukushima Daini Nuclear Power Station]
●Unit 1 to 4: Shutdown due to the earthquake

Appendix: Past Progress (As of 3:00 pm, on May 9, 2012) (PDF 508KB)
Appendix: Past Progress (From March 11, 2011 to December 31, 2011) (PDF 460KB)
* Revised past progress