Corporate Information

Press Release (May 24,2011)
Status of TEPCO's Facilities and its services after the Tohoku-Chihou-Taiheiyou-Oki Earthquake (as of 9:00 AM, May 24)
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 
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 and then we updated the roadmap considering the current situation, 
on May 17th. 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) 

- On May 23rd, we changed the rate of water injection to Unit 3 through 
  the fire extinction system piping arrangement from approximately 4 m3/h 
  to approximately 3 m3/h at 5:19 Pm. 
- On May 23rd from 2:17 pm to 2:37 pm , we sampled, on a trial basis, 
  radioactive materials in the ambient air at the opening of the Reactor 
  Building, Unit 4. We will analyze and evaluate. 
- At 4:00pm on May 23rd, we started to spray water to the spent fuel pool 
  of Unit 4 by the concrete pumping vehicle (We added hydrazine from 4:08pm 
  to 6:30pm). We finished spraying at 7:09pm on the same day. 
- The transfer of accumulated water in Unit 6 turbine building to a 
  temporary tank was started at 9 am on May 24th. 
- On May 23rd, we sprayed dust inhibitor to approximately 6,000 m3 area 
  on the east sides of the turbine building of Units 3, using an unmanned 
  crawler dump truck in order to prevent diffusion of radioactive materials. 
- On May 23rd, we sprayed dust inhibitor to approximately 8,750 m3 areas 
  including nearby Solid Waste Storing Facility in a 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
[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.
[Perspective of Power Supply and Demand Balance in this Summer] 
We have worked to restore electricity supply after our nuclear and thermal 
power facilities were severely damaged by Tohoku-Chihou-Taiheiyou-Oki 
Earthquake. This time, we revised that the supply capacity in this summer 
would increase because we could plan to secure an additional capacity. 
However, in order to maintain the policy of avoiding further implementation 
of rolling blackouts during the summer, in addition to the above increase 
of the supply capacity, we sincerely ask for your continued cooperation 
in reducing electricity consumption. Now we are creating concrete measures 
considering "Outline of Countermeasures for Power Supply and Demand During 
Summertime" presented by the Electricity Supply-Demand Emergency Response 
Headquarters of the Japanese government. 
                                                    (Previously Announced)

In the event that an unplanned outage such as excessive continuous 
operation in old plants and a sudden increase of power demand due to 
unusual hot temperature occur, there is a possibility to affect a stable 
power supply. In order to maintain the policy of avoiding rolling blackouts, 
we steadily implement to install additional power capacity we have planed, 
and we continuously do our best efforts to secure supply capacity. 
Appendix: Past Progress (PDF 307KB) 

* Revised past progress 
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