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

-As the fluctuation in the amount of water injection to Unit 2 reactor was confirmed at 11:46 AM on August 3, the amount of water injection from the water supply system was adjusted from approx. 2.2m³/h to approx. 2.0m³/h, and the amount of water injection from the reactor core spray system was adjusted from approx. 5.8m³/h to approx. 5.5m³/h.

-At 2:07 PM on August 3, we started transferring the accumulated water from Unit 1 Turbine Building basement to Unit 2 Turbine Building basement.

-At 7:30 AM on August 3, a worker from cooperative company on patrol confirmed that the water oozed off from the pipe connection part of pressure indication transmitter of the system B filter at the second Cesium Adsorption Apparatus which was under operation with 2 systems (system A and B). Therefore, we conducted the vinyl curing on the part, and monitored the status continuously. Since water oozing was not stopped, we stopped system B at 12:11 PM on the same day. We bypassed the system B filter, and restarted system B at 10:20 PM. We confirmed that water oozing was stopped when we stopped system B, and repaired by a waterproof tape accordingly. For reference, system A was under operation during system B stopping. The flow rate was as below.
 
 Before system B stopping and after restarting: 40m³/h
 During system B stopping: 20m³/h

There was no impact on the accumulated water processing. We will investigate the cause.

[ Fukushima Daini Nuclear Power Station ]
· Unit 1 to 4: Shutdown due to the earthquake.
Appendix:: Past Progress (As of 3:00 pm, on August 3 2012) (PDF 467KB)
Appendix:: Past Progress (From March 11, 2011 to December 31, 2011) (PDF 523KB)
* Revised past progress

The aforementioned attachments are only available in Japanese.
We apologize for any inconvenience this may cause.