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 April 19, we started transferring of accumulated water from the basement of turbine building of Unit 6 to the temporary tank. At 4:00 pm on the same day, the transfer was suspended.

* At 9:32 am on April 20, 2012, because the decrease of the volume of injected water to the Unit 2's reactor, we adjusted the injected water volume from Core Spray System from approx. 2.6 m³/h to approx. 3.0 m³/h (we have kept the injected water volume from reactor feed water system at approx. 6.0 m³/h)

* At 9:33 am on April 20, we started to transfer accumulated water from the basement of turbine building of Unit 3 to the Centralized Radiation Waste Treatment Facility (Miscellaneous Solid Waste Volume Reduction Treatment Building [High Temperature Incinerator Building].

[Fukushima Daini Nuclear Power Station]
·Unit 1 to 4: shutdown due to the earthquake

*Regarding Fukushima Daiichi Nuclear Power Station, we described "Unit 1 to 3: Shut down due to the earthquake" and "Unit 4 to 6: Outage due to regular inspections before the earthquake" in the previous daily reports. However, Unit 1 to 4 were decided to be abolished on April 19, 2012. Thus, the description is corrected as "Unit 1 to 4: Abolishment (April 19, 2012)" and "Unit 5 to 6: Outage due to regular inspections before the earthquake". We apologize for the correction.
(Correction Date: April 24, 2012)

 

Appendix: Past Progress (As of 3:00 pm, on April 20, 2012) (PDF 299KB)
Appendix: Past Progress (From March 11, 2011 to December 31, 2011) (PDF 460KB)
* Revised past progress