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
Eearthquake
(Units 4 to 6: outage due to regular inspections)
- At around 2 pm on October 23, TEPCO's employee found seemingly oil spill
outside the oil retaining wall of temporary oil tank for main transformer
in the power plant premise (Wild Bird Forest). At around 2 pm on October
24, we confirmed at the site that there were oil film in the water
accumulated in the oil retaining wall and the oil was accumulated in the
space which the water in the oil retaining wall spilled. From these
reasons, we assumed that the oil observed on October 23 was the oil
which spilled from the oil retaining wall by inflow of rain water to the
wall. At this moment, we are investigating in detail, including nuclide
analysis for the water accumulated in the wall and analysis on the oil
film.
- At around 11:30 am on October 24, we observed the water leakage (about 20
litters) from the axis seal region of the law water pump (for 2-1 skids
use) which was a constitution apparatus of the Water Desalination
Facility (RO membrane unit) 2 of the water treatment system and we
stopped the facility. Afterward, the water leakage was confirmed to be
stopped. At 2:30 pm on the same day, we stopped the line connecting to
the water pump and started other water desalinations. At 4:20 pm, the
rated flow reached 50 m3/h.
·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 on October 25, 2011) (PDF 111KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011)(PDF 225KB)
* Revised past progress