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 from the previous press release 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)
* Through the confirmation of the performance of water treatment facility
(decontamination facility and cesium adsorption facility), we found
radiation density is increasing at post decontamination treatment water.
To investigate the cause, we stopped water treatment facility at 6:22
pm on September 15 and restarted at 6:42 pm of cesium adsorption
facility alone at 6:46 pm it has reached normal operation rate (approx.
30m3/h). Thereafter, in order to purify the water inside waste water
tank, at 11:38 am on October 4, we started single circulating operation
of decontamination facility. At 2:00 pm on October 16, as the
purification of water inside waste water treatment tank was confirmed,
single circulating operation of decontamination facility was stopped.
At the moment, as sufficient decontamination capacity is secured by
Cesium adsorption facility (single circulating operation), it is not
necessary to start up the facility immediately.
- 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 16, 2011) (PDF 100KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011)(PDF 225KB)
* Revised past progress
