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 1 to 4: shutdown due to the earthquake) 
 
 -For the reliability enhancement of water injection into the reactor, the 
  water discharge line of the reactor water injection pump on the hill is 
  planned to be changed from pressure hose to polyethylene pipe. Therefore, 
  there is the necessity of the temporary stopping of water injection from 
  the reactor water injection pump for it. At 11:50 am January 26, the 
  water injection to the reactor of Unit 3 from the feed water injection 
  system was switched from the reactor water injection pump to the reactor 
  water injection pump in the turbine building. At 9:14 am on January 27, 
  the volume from the feed water system increased from approx. 8.5 m3/h to 
  approx. 8.9 m3/h, and the volume from the reactor core spray system 
  decreased from approx. 1.0 m3/h to 0 m3/h. because the replacing work of 
  the water injection line of the reactor water injection pump on the hill 
  was finished at 2:49 pm, regarding the water injection from the feed 
  water system, we switched the pump from in the turbine building to on 
  the hill at 3:01pm. At 3:11 pm, the volume from the feed water system 
  decreased from approx. 8.9 m3/h to approx. 7.9 m3/h, and the volume from 
  reactor core spray system increased from 0 m3/h to 1.0 m3/h. At 2:02 pm  
  on January 28, the volume from the feed water system decreased from  
  approx. 8 m3/h to approx. 7 m3/h, and the volume from reactor core spray  
  system increased from approx. 0.5 m3/h to approx. 2 m3/h.  
 -At 10:29 am on January 28, when a TEPCO worker checked the reactor water 
  injection system, he found water leakage from the Vent Valve around the 
  Normal Reactor Injection Pump (B) on the Hill which was on standby. At 
  around 10:36 am, we closed the anterior and posterior valve of the pump 
  and at around 11:19 am, we checked that the leakage was stopped. (We 
  estimated the amount of leakage was approx. 9 liters.) The water did not 
  flow out to the sea because there was no drain there. We also checked   
  that the surface dose rate around the leakage point was the same level  
  of the atmosphere dose rate. Currently, we are checking the similar  
  places. We will conduct a detail inspection to find the reason of the  
  leakage and take countermeasures. We continue to inject water to the  
  reactor from the Normal Reactor Injection Pump on the Hill (A) and (C).  
 -At 12:00 pm on January 28, when a TEPCO worker checked the water 
  treatment facility, he found water was leaked around a drop per second  
  from the Valve Flange around the Demineralizer of the Evaporation  
  Concentration Apparatus. (We estimated the amount of leakage was approx.  
  8 liters.) The water did not flow out to the sea because it was in the  
  weir tank. We also checked that the surface dose rate around the leakage  
  point was the same level of the atmosphere dose rate. Currently, we took 
  countermeasure to receive leaked water by pan. This facility is now   
  suspended. As there is sufficient desalinated water, we continue the  
  operation of the water treatment facility and the injection to the  
  reactor. 
 -At 12:00 pm on January 28, when a TEPCO worker checked the water  
  treatment facility, he found water was leaked around a drop per 5  
  seconds from the Valve Flange of Mini Flow Piping of the Waste RO*  
  Supply Pump where the treated water is sent from the suppression pool  
  water surge-tank to the water desalinations. (The amount of leakage was  
  approx. 0.5 liters.) The water did not flow out to the sea because it  
  was in the weir tank. We also checked that the surface dose rate around  
  the leakage point was the same level of the atmosphere dose rate.  
  Currently, we took countermeasure to receive leaked water by pan. The 2  
  RO Supply Pumps are now on stand-by and we continue the operation of the  
  water treatment facility and the injection to the reactor. 
  * RO: Reverse Osmosis Membrane 
                                      
·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 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 - 3.1 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. 
 
* Correction of Description in [Impacts on Power Supply and Demand Balance]
We described,"there will be some minus factors such as the regular 
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station" in the 
previous press release. However, because Unit 5 of Kashiwazaki-Kariwa 
Nuclear Power Station has already conducted a regular inspection since 
January 25, we revise the previous sentence to "there are some minus 
factors such as the regular inspection of Unit 5 at Kashiwazaki-Kariwa 
Nuclear Power Station". We would like to apologize for the correction 
(February 8, 2012). 

  
Appendix: Past Progress (As of 3:00 pm, January 28, 2012) (PDF 369KB)  
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)  
 
* Revised past progress