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 Unit 1 to 3: shut down due to the
earthquake
(Units 4 to 6: outage due to regular inspections)
*At 9:28 am on October 6, we arranged the amount of water injected to the
reactor to 3.8 m3/h since we found the reduction in the amount of injected
water.
*At about 9:58 am on October 6, we stopped the operation of the Water
Desalinations(reverse osmosis membrane) No2 and No3 because we found stain
of leaked water in the water joint at the outlet piping of the Water
Desalinations' waste RO supply pump. We fixed the outlet piping and at
1:01 pm on October 6, we restarted the operation of the Water
Desalinations(reverse osmosis membrane) No2 and No3.
*At 0:30 pm October 6, we arranged the amount of nitrogen injected to the
reactor containment vessel of Unit 2 to 13.5 m3/h because we found the
increase in amount of injected nitrogen.
*To change transfer route of accumulated water of Unit 2, at 1:16 pm on
October 4, we stopped transfer of accumulated water from vertical shaft of
turbine building of Unit 2 to centralized radiation waste treatment
facility (Miscellaneous Solid Waste Volume Reduction Treatment Building
[High Temperature Incinerator Building]). At 1:48 pm on October 6, we
started to transfer accumulated water from underground floor of turbine
building of Unit 2 to centralized radiation waste treatment facility
(Miscellaneous Solid Waste Volume Reduction Treatment Building [High
Temperature Incinerator Building]).
*At 1:41 pm October 6, We stopped pumping at auxiliary cooling seawater
system Unit 6 since we found slow decreasing trend in pressure of pump
header at that system. At 2:07 pm October 6, we restarted the pump and
confirmed that the pressure was normal value.
*At 2:13 pm October 6, we conducted dust sampling at the upper part of
reactor building of Unit 3 using a large crane vehicle.
-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 3:00 pm on October 6, 2011) (PDF 236KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011)(PDF 225KB)
* Revised past progress
