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 10:00 am on November 29, we started transferring accumulated water 
    from the basement of Turbine Building of Unit 6 to temporary tank. At 
    4:00 pm on the same date, we stopped the transferring.

  * On November 29, sampling survey of gas at the gas management system of 
    Unit 2 primary containment vessel was implemented. As a result of the 
    analysis, we regarded the situation was not recriticaly because the 
    radioactive density at the gas management system of Unit 2 primary 
    containment vessel was under ND (1.1 x 10-1Bq/cm3), the criteria of 
    recriticaly is 1 Bq/cc. Regarding Xe-135, its radioactive density was 
    detected by charcoal filter* (we regarded spontaneous fission). 
    According to the Report with regard to "Policy on the mid term security" 
    for the Units 1 to 4 of Fukushima Daiichi Nuclear Power Station to 
    Nuclear and Industrial Safety Agency at the Ministry of Economy, Trade 
    and Industry (1) (revision) (for public on November 9), the situation 
    of recriticaly therefore should be regarded by the sampling survey of 
    gas at the gas management system of Unit 2 primary containment vessel 
    by vial.
    * Detection Limit Charcoal filter: 10-6 level, Vial: 10-1 level

  * At 8:59 am on November 30, we stopped the transferring accumulated 
    water from the basement of Turbine Building of Unit 2 to the 
    centralized radiation waste treatment facility (miscellaneous solid 
    waste Volume reduction treatment building [high temperature incinerator 
    building]).

· 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 10:00 am, November 30, 2011) (PDF 183KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress