Corporate Information

Press Release (May 10,2011)
Status of TEPCO's Facilities and its services after the Tohoku-Chihou-Taiheiyou-Oki Earthquake (as of 3:00 PM, May 10)
Due to the Tohoku-Chihou-Taiheiyou-Oki Earthquake which occurred on March
11th 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 17th, we have put together the roadmap towards restoration from the
accident. 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 previous press release are underlined.
[Nuclear Power Station] 
Fukushima Daiichi Nuclear Power Station: 
  Units 1 to 3: shutdown due to the earthquake
  (Units 4 to 6: outage due to regular inspections) 
- We have been calibrating water level gauge of the reactor of Unit 1 
  since May 10. 
- We injected water to the spent fuel pool of Unit 2 by temporary motor 
  pump from 1:09pm to 2:45pm, May 10th. (We added hydrazine for the period 
  from 1:19pm to 2:35pm).  
- We have suspended transferring water from the vertical shaft of Unit 2 
  turbine building to Centralized Radiation Waste Treatment Facility due 
  to the construction work of changing water supply line for Unit 3 
  reactor to Reactor Feed Water System. We also cut a part of pipes of 
  Reactor Feed Water System of Unit 3 on the same day. 
- On May 10th, we started laying out pipes for transferring draining water 
  of Unit 3 turbine building to Centralized Radiation Waste Treatment 
- At 10:00am May 10th, we resumed transfer of Unit 6 turbine building 
  basement water to the temporary tank. 
- On May 10th, we sprayed dust inhibitor, which avoids radioactive 
  materials from scattering, to the area of 6,000 m2 around eastern area 
  of turbine building of Units 1 and 2 by using an unmanned crawler dump 
  We sprayed dust inhibitor to areas including nearby the solid waste 
  storage facility (approx. 5,050m2) using the conventional method.
Fukushima Daini Nuclear Power Station: 
  Units 1 to 4: shutdown due to the earthquake
Kashiwazaki Kariwa Nuclear Power Station: 
  Units 1, 5, 6, 7: normal operation 
  (Units 2 to 4: outage due to regular inspection)
[Thermal Power Station] 
- Hirono Thermal Power Station Unit 2 and 4: Shutdown due to the earthquake
- Hitachinaka Thermal Power Station Unit 1: Shutdown due to the earthquake
[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.
[Avoidance of further Implementation on Planned Rolling Blackouts and
Request for Conserving Electricity Consumption] 
Currently, we are working to restore electricity supply after our nuclear
and thermal power facilities were severely damaged by
Tohoku-Chihou-Taiheiyou-Oki Earthquake. The widespread understanding and
cooperation of our customers to conserve electricity have contributed to
the improvement of this tight power supply-demand balance situation.
Amidst this backdrop, since the electricity supply will be able to balance
with the demand for the time being, we have decided not to implement
further rolling blackouts in principle.
However, we sincerely ask for your continued cooperation in reducing
electricity consumption due to the possible increase in demand caused by
warmer weather or unexpected trouble at power stations that are currently
being restored to service.  In case the electricity supply-demand balance
becomes tighter than expected, we may regrettably need to restart the
implementation of rolling blackouts, with prior notice. We kindly ask for
your cooperation.
We will do our best to maintain this policy of avoiding further
implementation of rolling blackouts during the summer.
Appendix: Past Progress (PDF 160KB) 
* Revised past progress 
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