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 September 20,
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.
*Updates are underlined.
[Nuclear Power Station]
-Fukushima Daiichi Nuclear Power Station:
(Units 4 to 6: outage due to regular inspections)
*At 8:54 am on October 3, the secondary cooling system piping arrangement
of circulating cooling system of Unit 4 spent fuel pool was stopped due
to the replacement of the secondary cooling system piping arrangement.
After completing the replacement, the secondary cooling system was
restarted at 3:03 pm on the same day.
*At 10:00 am on October 3, we resumed transferring accumulated water at
the basement of Unit 6 turbine building to a temporary tank. The transfer
was stopped at 4:00 pm on the same day.
*At 10:37 am on October 3, in Centralized Radiation Waste Treatment
Facility, we started transferring accumulated water at On-site Bunker
Building to Process Main Building. The transfer was stopped at 3:37 pm on
the same day.
*At around 3:00 pm on October 3, TEPCO staff observed an oil leakage from
the transformer B system for transportation of Okuma 3 line (in-vehicle)
while on patrol. The amount of the oil leakage was about one drop in ten
seconds and the oil formed an oil film of approximately 1m x 1m. An
emergency procedure was taken to stop the leakage. A further
investigation will be conducted, though the transformer can be used
without problems.
-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 9:00 am, October 4, 2011) (PDF 87.7KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011)(PDF 225KB)
* Revised past progress