Tokyo Electric Power Co Incorporated : (Nov 28,2012)Status of TEPCO's Nuclear Power Stations after the Tohoku-Chihou-Taiheiyou-Oki Earthquake (Daily Report as of 3:00 PM, November 28)

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

- From 1:25 PM to 6:45 PM on November 27, the reactor water injection pump was switched from the regular reactor water injection pump on the hill to the reactor water injection pump in the Turbine Building as the power supply to Units 1-3 regular reactor water injection pumps on the hill will be suspended during the common power supply modification scheduled on November 28 to 29. As the reactor injection water flow rate is difficult to adjust considering that the target injection water amount at Unit 1 (total flow rate: 4.5m3/h) is the same as the flow rate lower limit of the reactor water injection pump in the Turbine Building (4.5m3/h), Unit 1 reactor injection water amount was adjusted as follows to achieve the total reactor injection water amount of 5.0m3/h at 4:30 PM on the same day. Feed water system: Increased from approx. 2.4m3/h to approx. 2.5m3/h, Reactor core spray system: Increased from approx. 2.0m3/h to approx. 2.5m3/h. In addition, Unit 2 reactor injection water amount was adjusted as follows. Feed water system: Increased from approx. 1.8m3/h to approx. 2.1m3/h, Reactor core spray system: Maintained at approx. 4.0m3/h.

- At 12:12 AM on November 28, Units 1-3 reactor injection water amounts were adjusted as follows since the amounts had decreased.
[Unit 1] Feed water system: Increased from approx. 2.1m3/h to approx. 2.5m3/h, Reactor core spray system: Increased from approx. 2.4m3/h to approx. 2.5m3/h.
[Unit 2] Feed water system: Increased from approx. 1.6m3/h to approx. 2.0m3/h, Reactor core spray system: Increased from approx. 3.9m3/h to approx. 4.0m3/h.
[Unit 3] Feed water system: Increased from approx. 1.8m3/h to approx. 2.0m3/h, Reactor core spray system: Increased from approx. 3.9m3/h to approx. 4.0m3/h.

- At 9:47 AM on November 21, Unit 6 spent fuel pool cooling system was stopped for repairing the strainer changeover valve of the component seawater system (the pool water temperature when the system was stopped: 18.8