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 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) 
 
- Because of the finding of accumulated water included 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 of the last 
  inspection on February 15, the inspection of trenches etc. were 
  completed. 
  The inspection done on February 15, the result (quick estimation) of 
  inspection is as follows(place and nuclide analysis): 
- Inside of fire extinction pipe trench(East of Unit 3) 
   I-131: Below the detection limit, Cs-134: 3.4x100Bq/cm3, Cs-137: 4.8x 
   100Bq/cm3 
- Inside Unit 5 and 6, Transformer disaster prevention pipe trench 
   I-131: Below the detection limit, Cs-134: 1.0x10-1Bq/cm3, Cs-137: 9.3x 
   10-2Bq/cm3 
- Fire extinction pipe trench(Southwest of Unit 5) 
   I-131: Below the detection limit, Cs-134: 1.4x10-1Bq/cm3, Cs-137: 1.6x 
   10-1Bq/cm3 
 
- At 10:00 am on February 15, we started to transfer accumulated water at 
  the basement of turbine building of unit 6 to temporary tank. At 4:00 pm 
  of same day, transfer was suspended. 
 
- On February 15, sampling for the air of the PCV gas control system was 
  conducted. As a result of the analysis, it was confirmed that xenon 135 
  at the entrance of the system was below the detection limit (1.0x10-1 
  Bq/cm3) and recriticality criteria 1 Bq/cm3. 
 
- At around 8:30 pm on February 15, we detected radiation from a face of a 
  worker of co-operating company who was collecting and delivering debris 
  at around the Unit 3 and the Solid Waste Storage Facility No1 and 2 by 
  the contamination test at J-Village. After the decontamination of the 
  face, we conducted the contamination test again by whole body counter. 
  As a result, no radioactive materials was taken in(below 2mSv). We 
  evaluated that the radiation was attached when he removed the equipment, 
  because there were no other workers who were detected the radiation at 
  the area and no defects of the equipment situation. 
 
- At 9:57 am on February 12, we started to transfer accumulated water at 
  the basement of Turbine Building of Unit 3 to the Centralized Radiation 
  Waste Treatment Facility. At 9:50 am on February 16, the transfer was 
  suspended. 
 
·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] 
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 on February 16, 2012) (PDF 431KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 
 
* Revised past progress