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.

* Updates since the previous press release 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)

  - As finding a puddle containing radioactive materials at the trench 
    between the Process Main Building and the Miscellaneous Solid Waste 
    Volume Reduction Treatment Building [High Temperature Incinerator 
    Building] (December 18, 2011), we started the inspection of other 
    trenches at the site on January 11.
    As a result of the inspection of January 17, the locations where 
    accumulated water was discovered and the nuclide analysis results 
    (preliminary results) are as follows:
    · The Unit 4 Chemical tank connection duct 
      I-131:below measurable limit, Cs-134:1.3x100Bq/cm3, 
      Cs-137:1.7x100Bq/cm3 
    · The Unit 1 water intake power cable duct 
      I-131:below measurable limit, Cs-134:5.4x10-1Bq/cm3, 
      Cs-137:8.0x10-1Bq/cm3 
    · It has been confirmed that there is no accumulated water at 
      The Unit 3 Chemical tank connection duct and at the piping 
      duct for Unit 2 radioactive liquid.

  - At approximately 4:10 pm on January 17, 2012, due to the trouble of 
    switching facilities at the Minami-iwaki switching station, the Yonomiri 
    line 1 and 2 instantaneously dipped*. The following is the list of 
    major facilities which stopped their operation due to the event. 
    Later, after confirming that there were no significant problem over the 
    stopped facilities, we started their operation in turn. There is no 
    significant change for the major parameters which have resulted from 
    the event. 
    ○ Unit 2 spent fuel pool Alternative Cooling system 
       [started at 4:53 pm] 
    ○ Unit 1 -3 nitrogen injection facility [started at 4:57 pm] 
    ○ Unit 3 spent fuel pool Alternative Cooling system 
       [started at 5:15 pm] 
    ○ Unit 6 spent fuel pool Coolant purification system 
       [started at 5:19 pm] 
    ○ Unit 2 gas management system of Primary Containment Vessel 
       [started at 5:25 pm] 
    ○ Cesium adsorption apparatus [started at 6:42 pm, having reached 
       the steady level of flowing at 6:45 pm] 
    ○ Unit 3 spent fuel pool radioactive materials removal equipment 
       [started at 7:04 pm]

  - At 9:43 am on January 18, 2012, related to the switch of water 
    injection piping for reactor injection pump on the hill, we changed the 
    amount of the water injection from approx. 1.9 m3/h to approx. 3.0 m3/h 
    through the reactor feed water system, from approx. 7.5 m3/h to approx. 
    6.0 m3/h through the core spray system regarding the water injection to 
    Unit 3.

  - At 9:53 am on January 18, 2012, because the change of the water amount 
    injected to the reactor of Unit 1&2, we adjusted the amount of the 
    water injection for Unit 1from approx. 4.8 m3/h to approx. 4.5 m3/h 
    through the reactor feed water system, from approx. 1.8 m3/h to approx. 
    2.0 m3/h through the core spray system. Likewise, we adjusted the 
    amount of the water injection for Unit 2from approx. 2.4 m3/h to approx. 
    3.0 m3/h through the reactor feed water system, from approx. 7.5 m3/h 
    to approx. 7.0 m3/h through the core spray system.

· Fukushima Daini Nuclear Power Station:
  (Units 1 to 4: shutdown due to the earthquake)

  - At approximately 4:10 pm on January 17, due to the trouble of switching 
    facilities at the Minami-iwaki switching station, the Tomioka line 1 
    and 2 instantaneously dipped*.  The following is the list of major 
    facilities which stopped their operation due to the event. Later, after 
    confirming that there were no significant problem over the stopped 
    facilities, we started their operation in turn. There is no significant 
    change for the major parameters which have resulted from the event. 
    ○ Unit 1 spent fuel pool Coolant purification system 
       [started at 4:42 pm] 
    ○ Unit 3 spent fuel pool Coolant purification system 
       [started at 4:46 pm]

· Kashiwazaki Kariwa Nuclear Power Station: Units 5, 6: under normal 
  operation
  (Units 1 to 4 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 will be some minus factors such as the regular 
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station. On the 
other hand, there will be 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.

*instant voltage dip: We previously described as "instantaneously turned
 to off". But we correct it as "instant voltage dip". We would like to
 apologize for any inconveniences this may cause and correct them. 

Appendix: Past Progress (As of 10:00 am, January 18, 2012) (PDF 341KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB)

* Revised past progress