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 10:00 AM on May 23, we started transferring the accumulated water from Unit 6 Turbine Building basement to the temporary tank. At 4:00 PM on the same day, we stopped transferring.

* At 8:23 AM on May 23, the second cesium absorption apparatus was temporarily stopped for filter backwashing. At 4:57 PM on the same day, the apparatus was restarted, and at 5:05 PM the steady flow rate (approx. 40.0m³/h) was achieved.

* At 2:59 PM on May 24, hydrazine injection into Unit 4 reactor well through the instrument pipes inside the reactor was started.

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

* The transmission system of the monitoring posts (No. 1-7) located at the power station site boundary will be under inspection from May 21.
No. 6: 1:31 PM to 5:20 PM on May 21
No. 1: 9:11 AM to 11:30 AM on May 22
No. 2: 1:11 PM to 5:10 PM on May 22
No. 7: 9:11 AM to 11:10 AM on May 23
No. 3: 1:31 PM to 4:10 PM on May 23
No. 4: 9:11 AM to 11:30 AM on May 24
No. 5: From 1:31 PM on May 24

Appendix: Past Progress (As of 3:00 pm, on May 24, 2012) (PDF 322KB)
Appendix: Past Progress (From March 11, 2011 to December 31, 2011) (PDF 460KB)
* Revised past progress