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)

- Since February 2, the tendency of temperature has risen at the bottom of 
  PCV. Thus, at 7:20 pm on February 3, we changed the injection amount 
  into Unit 2 reactor through feed water system from approx. 2.9 m3/h to 
  approx. 4.9 m3/h and changed that though reactor core spray system from 
  approx. 5.8 m3/h to approx. 3.8 m3/h (which means setting them at those 
  of before flow adjustment on February 1). After that, we have observed 
  the tendency of temperature at the upper head of the bottom of PCV. The 
  temperature was around 70.0 °C (approx. 70.3 °C at 11:00 pm on February 
  5) and in order to prevent further temperature increase, we decided to 
  increase the amount of water injected to the reactor. At 1:29 pm on 
  February 6, the water injection volume to the Unit 2 reactor through the 
  feed water system was changed from approx. 5.8 m3/h to approx. 6.8 m3/h 
  (the water injection through the reactor core spray system remains 
  approx. 3.8 m3/h). At this moment, temperature indicates approx. 70.6 °C 
  (as of 5:00 am on February 6). We will monitor it continuously.

- At 8:05 am on February 5, our employee on patrol confirmed the water 
  leakage from valve flange in the outdoor fire protection system piping 
  in Unit 6. Around 8:31 pm, the valve for upper stream was closed and 
  leakage was stopped. The water leaked was already processed and there 
  supposed to be no outflow of the water to the sea because there is no 
  drain located near by.

- At 10:56 pm on February 4, "Abnormal state (low pressures) in suction 
  pressure of RO high pressure pump" triggered the alarm in the desalting 
  facility for spent fuel pool of Unit 2, and the facility automatically 
  stopped. Because all isolation valves of the system have been closed due 
  to the interlock and the alternative cooling system for spent fuel pool 
  is continuously operated, it does not affect the cooling for the spent 
  fuel pool. In addition, as a result of site check, it was confirmed that 
  any leakage from the facility was not found. At 5:35 pm of February 5, 
  the operation of the system was resumed and no abnormality was confirmed. 
  Also, there was no abnormality regarding the RO high pressure pump. We 
  will monitor it continuously.

- At 8:40 am on February 6, we temporally suspended the second cesium 
  adsorption apparatus to conduct backwash of the filter since gradual 
  decrease in the volume of treatment was confirmed.

- At 4:07 am on February 3, we started water transfer from the basement of 
  turbine building of Unit 2 to Centralized Radiation Waste Treatment 
  Facility (Miscellaneous Solid Waste Volume Reduction Treatment Building 
  [High Temperature Incinerator Building]). At 8:47 am on February 6, the 
  transfer was stopped.

- Regarding the water leakage from Filtrate water supply valve of Unit 3 
  spent fuel pool cooling system occurred on January 29,we removed the 
  valve and completed installation of blanking plate, In addition, we are 
  temporally suspending the secondary cooling tower in order to prevent 
  overcooling of spent fuel pool alternative cooling facility. Because the 
  pool temperature began to increase, at 9:55 am on February 6, we 
  initiated the secondary cooling tower.

- At 10:00 am on February 6, we started water transfer from the basement  
  of turbine building of Unit 6 to the temporary tank.

·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 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 are some minus factors such as the regular inspection 
of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station. On the other hand, 
there are several plus factors such as the recovery of the common thermal 
power stations which suffered the earthquake. As a result, we expect to 
secure 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 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 10:00 am, February 6, 2012) (PDF 608KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 

* Revised past progress