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Corporate Information

 
Press Release (Dec 11,2011)
Status of TEPCO's Facilities and its services after the Tohoku-Chihou-Taiheiyou-Oki Earthquake (as of 3:00 pm, December 11)
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 November 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.

*updates since the previous press release 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)
* On December 11th, we increased the water injection amount of unit 1 and
  2 to cool down the reactor more safely.
  ·unit 1
   At 10:30 am on December 11th, we adjusted water injection from Core
   Spray System from approx. 1.0 m3/h to approx. 2.0 m3/h. (Water
   injection from the Feed Water System continued with the level of approx.
   4.2 m3/h).
  ·unit 2
   At 10:44 am on December 11th, We adjusted water injection from Core
   Spray System from approx. 5.6 m3/h to approx. 6.0 m3/h, while we
   adjusted water injection from the Feed Water System from approx. 2.5
   m3/h to approx. 3.0 m3/h

* At 11:10 am on December 11th, as we found that there was small vibration
  at the Flow Control Valve of Core Spray System, we adjusted water
  injection from Core Spray System to unit 3 from approx. 6.1 m3/h to
  approx. 6.5 m3/h, while we adjusted water injection from the Feed Water
  System from approx. 3.1 m3/h to approx. 2.5 m3/h. Because the vibration
  of the Flow Control Valve still continued, we adjusted water injection
  from the Feed Water System to approx. 3.0 m3/h, and from Core Spray
  System to approx. 6.0 m3/h. Because the vibration is tiny and would do
  little influence on pipe arrangements and others, we will study on its
  countermeasure later.
· 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]
This winter, there will be some minus factors such as the regular
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station. On the
other hand, there will be several plus factors such as the recovery of the
common thermal power stations which suffered the earthquake. As a result,
we expect to secure 54.9 GW (at the end of December), 54.6 GW (at the end
of January), 53.7 GW (at the end of February) supply power. 
Compared to the maximum demand in the last winter, which is 51.5 GW, we
will have 2.2 - 3.4 GW generation reserve margin.

We expect to maintain stable power supply this winter, however, as there
remains possibilities of unplanned shutdowns at our power stations and
growth in the demand according to the rapid change in the temperature, we
would like to ask your reasonable effort to save electricity.

We will continue to make our efforts to maintain stable operation and
maintenance of the power facilities in order to "prevent in principle" the
planned blackouts and secure power supply.

Appendix: Past Progress (As of 3:00 pm, December 11, 2011) (PDF 209KB)
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress
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