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 major facilities.

* The updates are underlined.

[Nuclear Power Station]
·Fukushima Daiichi Nuclear Power Station: Unit 1 to 3: shut down due to the earthquake:
(Units 4 to 6: outage due to regular inspections before the earthquake)

* On April 2, we conducted sampling at charcoal filter and particulate filter of gas control system of Unit 1 Primary Containment Vessel.
* At 1:21 pm on April 2, we started including hydrazine into the Unit 2 SFP by utilizing the circulating system. At 3:15 pm we finished the hydrazine injection.
* At 10:00 am on April 2, we started transferring the water accumulated in the basement of T/B, Unit 6 towards the temporary tanks. At 4:00pm on the same day, we stopped transferring. At 9:30 am on April 3, we resumed transferring.
* On April 3, we conducted a dust sampling at the opening of Unit 2 R/B (blow out panel).
* At 9:26 am on March 30, we started transferring the water accumulated in the basement of Unit 3 T/B towards the centralized radioactive waste treatment facilities (process main building). At 9:50 am on April 3, we stopped transferring.
* At 10:08 am on April 3, we started transferring the water accumulated in the basement of Unit 3 T/B to the centralized radioactive waste treatment facilities [High Temperature Incinerator Building].
* On April 3, we conducted sampling at charcoal filter and particulate filter of gas control system of Unit 2 Primary Containment Vessel.

·Fukushima Daini Nuclear Power Station:
Units 1 to 4: shutdown due to the earthquake

* At 2:09 pm on April 3, we stopped Unit 4 Residual Heat Removal System ("RHR") (B) due to the preparatory work to replace power cables of auxiliary systems in Unit 4 RHR (B). At 2:14 pm on the same day, we started Unit 4 RHR (A).

·Kashiwazaki Kariwa Nuclear Power Station:
Units 1 to 7: outage due to regular inspections

[Thermal Power Station]
·Power supply has returned to normal and the facilities damaged by the earthquake are now being handled in a timely manner.

[Hydro Power Station]
·ower supply has returned to normal and the facilities damaged by the earthquake are now being handled in a timely manner.

[Impacts on Transmission Facilities]
·Power supply has returned to normal and the facilities damaged by the earthquake are now being handled in a timely manner.

[Impacts on Power Supply and Demand Balance]
We expect to maintain stable power supply in March.
Daily supply and demand balance is announced at our "TEPCO Electricity Forecast".

 

appendix: Past Progress(As of 3:00 pm on April 3, 2012) (PDF 517KB)
appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)
* Revised past progress