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)
 
* With regard to the thermometer placed at the lower part of RPV (top of 
  the lower head 135°) whose trend were different while others showed the 
  increasing trend after we decreased the water injection rate to the Unit 
  2 Reactor from the feed water system on February 22, we reported to 
  Nuclear and Industrial Safety Agency of Ministry of Economy, Trade and 
  Industry on March 1. We will continue monitoring this thermometer.
  ·At 11:00 am on March 12, the temperature of the lower part of the RPV 
   (top of the lower head 135°) : approx. 42.3 °C 
  ·At 11:00 am on March 12, the temperature of the lower part of the RPV 
   (top of the lower head 270°) : approx. 40.1 °C (reference) 
 
* At around 11:47 am on March 12, our staff confirmed by over current 
  alarm of fan motor of compressor at the site, that the nitrogen supply 
  equipment (nitrogen gas separator A), which supplied nitrogen to the 
  PCVs and the RPVs of Unit 1-Unit 3, stopped. At 12:09 pm on the same day, 
  we started the waiting nitrogen supply equipment (nitrogen gas separator 
  B) and at 12:19 pm, nitrogen injection started again. Regarding the 
  pressure of PCVs of Unit 1 - Unit 3 and hydrogen density, we did not 
  confirm any significant fluctuation (hydrogen density of Unit 3 is 
  monitored as reference data because the PCV gas control system is now 
  under test operation). 
 
* At 8:37 am on March 12, we started transferring the water accumulated in 
  the site banker building to the process main building in the centralized 
  waste treatment facilities. At 1:31 pm on the same day, we stopped 
  transferring. 
 
* In the display for the noble gas monitoring system for PCV of Unit 2, 
  both A and B system had not worked due to the failure of the 
  transmission system which connected the site and the Central Monitoring 
  Station in the Main Anti-Earthquake Building. Because we could not 
  conduct the monitoring from the monitoring station, we have conducted 
  remote monitoring by a camera installed at the site since February 20 
  for B system and February 21 for A system. After we revised software for 
  the transmission system for B system on March 9 and A system on March 12, 
  the monitoring from the Main Anti-Earthquake Building became available. 
  Since 2:00 pm on the same day, we restarted data sampling at the Central 
  Monitoring Station in the Main Anti-Earthquake Building. 
 
· Fukushima Daini Nuclear Power Station: 
  Units 1 to 4: shutdown due to the earthquake
 
* At 10:39 am on March 12, we stopped Residual Heat Removal System (B) of 
  Unit 3 by switching System (B) to System (A). At 10:54 am on March 12, 
  we started Residual Heat Removal System (A). 
 
· 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] 
We expect to maintain stable power supply in March.
Daily supply and demand balance is announced at our "TEPCO Electricity 
Forecast".
 

Appendix: Past Progress (As of 3:00 pm, on March 12, 2012) (PDF 535KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 
 
* Revised past progress