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) 
 
  - On February 13, sampling was conducted for charcoal filter of Unit 2 
    PCV gas control system. 
 
  - At 11:45 am on February 13, dust sampling was started for Unit 2 
    reactor building opening (Blowout panel). At 1:45 pm, the sampling was 
    finished. 
 
  - On February 14, sampling for the air of Unit 2 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 (1.0x 
    10-1Bq/cm3) and recriticality criteria 1 Bq/cm3. 
 
  - 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. The inspection 
    done on February 14, the result (quick estimation) of inspection is as 
    follows(place and nuclide analysis): 
    - Unit 6, fluid piping duct 
      I-131: Below the detection limit, Cs-134: 2.2x10-1Bq/cm3, Cs-137: 
             2.8x10-1Bq/cm3 
    - No pool of water was confirmed at common piping duct of Unit 5 and 
      Unit 6. 
 
  - At 10:00 am on February 14, we started to transfer accumulated water at 
    the basement of turbine building of unit 6 to temporary tank. At 4:00 
    pm, transfer was suspended. At 10:00 am on February 15, the transfer 
    was resumed. 
 
  - At 8:52 am on February 14, water flow at the 2nd Cesium adsorption 
    apparatus tends to decrease, so we stopped it to wash the inside of 
    the device by reversing the water flow. At 3:30 pm, the apparatus was 
    initiated and the flow volume reached at normal level (35m3/h) at 3:40 
    pm. 
 
· 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 15, 2012) (PDF 429KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 
 
* Revised past progress