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

* For the level of the accumulated water in the trench located between the process main building of Centralized Radiation Waste Treatment Facility and Miscellaneous Solid Waste Volume Reduction Treatment Building (High Temperature Incinerator Building) found on December 18 was rising, we conducted transferring the water to Miscellaneous Solid Waste Volume Reduction Treatment Building (High Temperature Incinerator Building) and kept monitoring the water level. As the water level was found rising, at 3:08 pm on April 25, we started transferring the accumulated water to Miscellaneous Solid Waste Volume Reduction Treatment Building (High Temperature Incinerator Building). At 7:38 am on April 26, we stopped transferring. From here on, we will conduct transferring as necessary when the water level is found rising.

* 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]). At 7:31 am on April 26, we stopped the transferring.

* At 10:00 am on April 25, we started transferring the accumulated water from the basement of T/B of Unit 6 to the temporary tanks. At 4:00 pm on the same day, we stopped transferring. At 10:00 am on April 26, we restarted transferring.

* On April 25, we conducted sampling of the gas of the Unit 2 PCV gas management system. As a result of the analysis, we confirmed that at the entrance of the system Xenon 135 was below detection limit (1.1 x 10^-1Bq/cm³), and below the re-criticality criterion which is 1Bq/cm³.

* At 2:42 pm on April 26, we started hydrazine injection into the Unit 4 spent fuel pool through the circulating cooling system.

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

Appendix: Past Progress (As of 3:00 pm, on April 26, 2012) (PDF 380KB)
Appendix: Past Progress (From March 11, 2011 to December 31, 2011) (PDF 460KB)
* Revised past progress