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)

  * Approx. at 2:28 pm, the alarm went off from an indicator installed in 
    front of Main Anti-Earthquake Building to continuously measure airborne 
    radiation dose (continuous dust monitor). In response to the alarm, we 
    instructed to put full face masks on at 2:38 pm accordingly. We are 
    measuring the airborne radiation dose in front of Main Anti-Earthquake 
    Building, and investigating the cause. 
    We confirmed that there are no significant changes in the readings of 
    the monitoring posts.
    At 2:50 pm on the same date, we replaced the filter of the monitor, 
    and restarted by reset operation. From the result of the airborne 
    radiation dose measurement in front of Main Anti-Earthquake Building, 
    the airborne radiation dose in front of Main Anti-Earthquake building 
    was 7.34 x 10-6 [Bq/cm3], which was less than the reference measure 
    for wearing a full face mask, 1 x 10-4[Bq/cm3]. At 4:04 pm on the same 
    date, it was announced that the workers did not have to wear a full 
    face mask as per normal.

  * At 12:30 pm on November 28, water leakage from pin holes at the pipe 
    arrangement between the water desalination facility and the buffer 
    tanks was detected at the different location from previous water leak, 
    which was detected on November 25. Then the replacement work was 
    conducted. Approx. at 3:40 pm, the water leakage from pin holes at 
    another pipe was detected. At the same time, water leakage was stopped 
    by tapes. The pipe will be also replaced. In addition, there is no 
    influence to the water injection into the reactor due to enough 
    desalination water. And, we confirmed the radiation dose in ambient 
    air near the leaking point was not specifically different from 
    surrounding area.

· 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, November 29, 2011) (PDF 179KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress