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, 2011, we have compiled the roadmap towards restoration from the
accident and on July 19 we accomplished the Step1 target "Radiation dose
is in steady decline". Then on December 16 we confirmed the accomplishment
of the Step 2 target "Release of radioactive materials is under control
and radiation doses are being significantly held down".
In addition, on December 21, 2011, we have compiled the "Mid-to-long-Term
Roadmap toward the Decommissioning of Fukushima Daiichi Nuclear Power
Units 1-4, TEPCO".
In addition to the maintenance of the plant's stable condition, we will
implement Mid-to-Long Term countermeasures towards the decommissioning of
Fukushima Daiichi Nuclear Power Units 1-4 to enable evacuees to return to
their homes as soon as possible and reduce the anxiety of the people in
Fukushima and the whole nation as soon as possible.
 
Below is the status of TEPCO's major facilities.
 
* The updates 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 before the earthquake)
 
* With regard to the thermometer placed at the lower part of RPV (top of
  the lower head 135°) whose trend which showed a different trend while
  others showed the increasing trend after we decreased the water
  injection rate to the Unit 2 Reactor from the feed water system on
  February 22, we reported to Nuclear and Industrial Safety Agency of
  Ministry of Economy,Trade and Industry on March 1. We will continue
  monitoring this thermometer.
  ·At 5:00 am on March 11, the temperature of the lower part of the RPV 
  (top of the lower head 135°) : approx. 41.4 °C 
  ·At 5:00 am on March 11, the temperature of the lower part of the RPV 
  (top of the lower head 270°) : approx. 40.1 °C (reference)
 
* In order to conduct the work to improve the reliability of water
  treatment facilities, we are planning to stop water treatment facilities
  one after another. At 8:45 am on March 1, we stopped the cesium
  adsorption apparatus. It will be out of service until March 15. We
  calculated the estimated water level increase at each building due to
  the stop o the facilities, and confirmed that the water levels in each
  building will be maintained within the limits. We also have sufficient
  volume of treated water therefore there will be no impact on the water
  injection to the reactors. At 8:07 am on March 2, we stopped the 2nd
  cesium adsorption apparatus. At 5:00 pm on March 10, we started the 2nd 
  cesium adsorption apparatus after the improvement works. At 6:34 pm on 
  March 10, the water injection volume reached at normal level (approx.42 
  m3/h). 
 
* At 1:55 pm on March 7, we started transferring accumulated water from
  the basement of Turbine Building of Unit 2 to Centralized Waste
  Treatment Facilities (Process Main Building). At 8:30 on March 11, we 
  stopped transferring.  
 
* At 8:47 am on March 11, we started transferring accumulated water from 
  the basement of Turbine Building of Unit 2 to the centralized radiation 
  waste treatment facility (Miscellaneous Solid Waste Volume Reduction 
  Treatment Building [High Temperature Incinerator Building]). 
 
·Fukushima Daini Nuclear Power Station: 
  Units 1 to 4: shutdown due to the earthquake
 
·Kashiwazaki Kariwa Nuclear Power Station:
  Units 6: under normal operation
  (Units 1 to 5 and 7: outage due to regular inspections) 
 
[Thermal Power Station] 
·Power supply has returned to normal and the facilities damaged by the
 earthquake are now being handled in a timely manner. 
 
[Hydro Power Station] 
·Power supply has returned to normal and the facilities damaged by the
 earthquake are now being handled in a timely manner. 
 
[Impacts on Transmission Facilities] 
·Power supply has returned to normal and the facilities damaged by the
 earthquake are now being handled in a timely manner. 
 
[Impacts on Power Supply and Demand Balance] 
We expect to maintain stable power supply in March.
Daily supply and demand balance is announced at our "TEPCO Electricity
Forecast".
 

Appendix: Past Progress (As of 10:00 am on March 11, 2012) (PDF 472KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 
 
* Revised past progress