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, we have compiled the roadmap towards restoration from the 
accident and then we updated the progress status of roadmap considering 
the current situation, on July 19. Accomplishment of the Step1 target 
"Radiation dose is in steady decline" has been confirmed. On November 17, 
we updated the further progress. 
By bringing the reactors and spent fuel pools to a stable cooling condition 
and mitigating the release of radioactive materials, we will make every 
effort to enable evacuees to return to their homes and for all citizens to 
be able to secure a sound life.

Below is the status of TEPCO's major facilities.

* Underlined are updates from the previous press release.

[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)

  * At 1:26 pm on November 30, we started injection of hydrazine into spent 
    fuel pool of unit 2 by using 
    circulating cooling system and stopped such injection at 3:04 pm on 
    the same day. 

  * At 4:04 pm on November 30, we started operation to inject nitrogen into 
    the reactor pressure vessel. At 4:08 pm, injection amount reached the 
    scheduled amount of 5 m3/h. At 4:26 pm, we started operation to inject 
    nitrogen into the reactor pressure vessel. At 4:40 pm, injection amount 
    reached the scheduled amount of 5 m3/h.

  * At 6:03 pm on November 30, we started transfer of the accumulated water 
    from the basement of Unit 2 turbine building to Centralized Radiation 
    Waste Treatment Facility (Miscellaneous Solid Waste Volume Reduction 
    Treatment Building [High Temperature Incinerator Building]).

  * At 11:13 on November 30, the alarm went off at the alternative cooling 
    system in the Fuel Pool Cooling and Filtering System indicating that 
    the difference of the flow rate between at the inlet and at the outlet 
    is large and the system automatically stopped its operation. At 11:34 
    pm on the same day, no leakage was confirmed by the site inspection. 
    At 11:00 pm on the same day, the temperature of spent fuel pool was 
    22.7 °C and the anticipated temperature increase was 0.3 °C/h. As 
    there is sufficient buffer, the inspection is scheduled during the 
    morning of December 1.

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

· Kashiwazaki Kariwa Nuclear Power Station: Units 5, 6: under normal 
  operation
    (Units 1 to 4 and 7: outage due to regular inspections)

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

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

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

[Impacts on Power Supply and Demand Balance]
This winter, there will be some minus factors such as the regular 
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station. On the 
other hand, there will be several plus factors such as the recovery of the 
common thermal power stations which suffered the earthquake. As a result, 
we expect to secure 54.9 GW (at the end of December), 54.6 GW (at the end 
of January), 53.7 GW (at the end of February) supply power. 
Compared to the maximum demand in the last winter, which is 51.5 GW, we 
will have 2.2 - 3.4 GW generation reserve margin.

We expect to maintain stable power supply this winter, however, as there 
remains possibilities of unplanned shutdowns at our power stations and 
growth in the demand according to the rapid change in the temperature, we 
would like to ask your reasonable effort to save electricity.

We will continue to make our efforts to maintain stable operation and 
maintenance of the power facilities in order to "prevent in principle" 
the planned blackouts and secure power supply.

Appendix: Past Progress (As of 9:00 am, December 1, 2011) (PDF 185KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress