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)

- For the purpose of Unit 5 water intake inspection, at 9:05 am October
  20, unit 5 seawater pump of Equipment Water Cooing System was shutdown,
  and stopped cooling the spent fuel pool. At 9:13 am, Residual Heat
  Removal System (D) was stopped and stopped cooling the reactor. As the
  inspection was completed, at 2:32 pm, seawater pumps of Equipment Water
  Cooing System was resumed, which resumed cooling the spent fuel pool.
  At 3:02 pm, Residual Heat Removal System (D) was resumed, which resumed
  cooling the reactor. Due to this stop, reactor water temperature
  temporarily rose from 22.2°C to 31.1°C. Spent fuel pool water
  temperature temporarily rose from 25.5°C to 26.2°C.

- At 10:00 am October 20, transportation of accumulated water from unit 3
  turbine building basement to Centralized Radiation Waste Treatment
  Facility (Miscellaneous Solid Waste Volume Reduction Treatment Building
  [High Temperature Incinerator Building]) was started.

- At 10:12 am October 20, transportation of accumulated water from unit 2
  turbine building basement to Centralized Radiation Waste Treatment
  Facility (Process Main Building) was started.

- At 1:01 pm October 20, injection of hydrazine using circulating cooling
  system to unit 4 spent fuel pool was started. At 2:41 pm, injection of
  hydrazine was completed.

- At 2:00 pm October 20, transfer of accumulated water which had been
  transferred from unit 6 turbine building to temporary tank, to the mega
  float was resumed. At 3:00 pm transfer was stopped.

·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]
Thanks to our all customer's energy-saving efforts, we could successfully
maintain an even supply-demand balance in this summer. We express our
deepest appreciation to the efforts.

While we will continue to exert maximum effort to stabilize the supply-
demand balance, we kindly request your continued efforts in keeping
electricity consumption within reasonable levels.

Appendix: Past Progress (As of 4:00 pm on October 20, 2011) (PDF 106KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011)(PDF 225KB)

* Revised past progress