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 October 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.

* The underlined parts are the 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 9:15 am on November 17, at unit 1 and 2 emergency reactor injection 
    line, the additional installation work for water flow adjusting valve 
    was commenced to better control the amount of water injection, and 
    completed at 1:09 pm on the same day. Water injection to reactor had 
    been done through regular reactor water injection line, and therefore 
    the additional installation work above had no impact to water injection.

  - At 10 am on November 17, accumulated water at the basement of Unit 6 
    Turbine Building was started to transfer to Temporary tanks.

  - At around 10:50 am on November 17, water leakage from pin holes at one 
    point of freshwater transfer line, and three points at concentrated 
    water transfer line after desalination process, was confirmed by 
    partner companies' worker who was patrolling at desalination apparatus. 
    At around 2:30 pm on the same day, while water transfer was continued 
    through fresh water transfer line, at the same time, running leakage 
    repair (repaired by tapes) was implemented and completed (leakage 
    amount: approx. 1liter). Cesium adsorption apparatus, 2nd adsorption 
    apparatus and concentrated evaporation apparatus continued operation, 
    and therefore there is no major effect with processing accumulated 
    water. Also, concentrated water transfer line is currently not being 
    used, and is isolated.

  - At 1:15 pm on November 17, hydrazine was injected to Unit 4 Spent Fuel 
    Pool through circulating cooling system, and finished the injection at 
    2:50 pm on the same day.

  - At 1:32 pm on November 17, in order to clean up the 1st system strainer 
    of Unit 3 spent fuel pool circulating cooling system as measures for 
    an alert caused by decrease of suction pressure at 1st system pump of 
    circulating cooling system, circulating cooling was temporarily stopped 
    (Water temperature of spent fuel pool at the time that circulating 
    cooling was stopped: approx. 19.2 °C). At 2:55 pm on the same day, the 
    cleaning of the 1st system strainer by reverse flow washing, the 
    alternative cooling was resumed (Water temperature of spent fuel pool 
    at the time that circulating cooling was resumed: approx. 18.8 °C, which 
    was assumed that water in the skimmer surge tank was cooled down by 
    ambient air so that the water temperature of spent fuel pool when the 
    circulating cooling was resumed was lower than that when the 
    circulating cooling was stopped.).

  - At 2:58 pm on November 17, an alarm of Unit 4 spent fuel pool 
    circulating cooling system was sounded, and the system automatically 
    shut down. The cause of the alarm is currently under investigation. 

· 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 3:00 pm, November 17, 2011) (PDF 151KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress