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, we have compiled the roadmap towards restoration from the 
accident and then we updated the roadmap considering the current situation, 
on June 17. By bringing the reactors and spent fuel pools to a stable 
cooling condition and mitigating the release of radioactive materials, we 
will make every effort to enable evacuees to return to their homes and for 
all citizens to be able to secure a sound life.

Below is the status of TEPCO's major facilities.
*Updates from previous press release are underlined.

[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
   Units 1 to 3: shutdown due to the earthquake
   (Units 4 to 6: outage due to regular inspections) 

- On July 3, the leakage of seawater at one of outlet piping in residual 
  heat removal system was detected at Unit5. Though we made countermeasures 
  to protect the pipe from concrete block corner, same piping condition was 
  found at the other place in the investigation. From the viewpoint of 
  preventive maintenance, we stopped residual heat removal system at 6:30 
  am on 13 July (outside temporary seawater cooling pumps stopped at 6:44 
  am) and replaced piping. 
- From 11:00 am to 4:00 pm on July 12th, we transferred low radioactive 
  accumulated water transferred from the turbine building of Unit 6 to the 
  temporary tank to Mega Float.
- At 8:51 am on July 12th, we found some leakage around the connection partv 
  at the liquid chemical injection line of coagulation setting devices in 
  accumulated water treatment facilities and therefore stopped the 
  operation of the facilities. We confirmed a corrosion of a metal 
  connector and no diffusion of leaked water. At 4:19 pm, we changed to a 
  corrosive resistant metal connector, flashed the system, and switched 
  cesium adoption unit. We activated accumulated water treatment facilities 
  on 4:28 pm, and restarted facilities on 4:58 pm. However, we have been 
  injecting water into the reactors. 

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

- At 3:05 pm on July 12, we started cleaning the inside of the cover for 
  the sensor and the lower part of the pole of a monitoring post (No.2) 
  installed in the power station site. The work was completed at 4:05 pm on 
  the same day.

Kashiwazaki Kariwa Nuclear Power Station:
   Units 1, 5, 6, 7: normal operation
   (Units 2 to 4: outage due to regular inspection)

[Thermal Power Station]
- Hirono Thermal Power Station Unit 4: Shutdown due to the earthquake

[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.

[Perspective of Power Supply and Demand Balance in this Summer]
In regard with the supply side in this summer, taking in account of the 
acceleration of restoration schedule for Hirono Thermal Power Station, more 
purchase of privately generated power, and excluding the power supply from 
60Hz areas which had been planned (due to the current difficult situation), 
supply capacity outlook is amended to 56.8GW at the end of July, and 55.6GW 
at the end of August.
Also, in order to support balance of demand and supply in the Tohoku area, 
which suffered severe damage from the quake, we would like to supply 
maximum of 1.4GW to Tohoku Electric Power Company by thoroughly 
implementing both supply and demand countermeasures. The supply capacity in 
this regard will be 55.4GW at the end of July, and 54.2GW at the end of 
August.

Estimated peak demand of 55GW for this summer is 5GW lower than that of 
last year. This incorporates the saving of electricity from "Outline of 
Countermeasures for Power Supply and Demand During Summertime" and 
restoration from decrease of production due to the quake.
 
As the occurrence of unplanned outage of aged thermal power stations or 
sudden increase of demand due to unexpected high temperature during summer 
may cause difficulties in maintaining stable demand supply balance, in 
order to continue to avoid rolling blackouts, we will steadily maintain 
supply capacity, and continue our efforts on reliable operation and 
maintenance of power facilities.

We apologize for the inconvenience this may cause and appreciate for your 
cooperation to save electricity.

Appendix: Past Progress (PDF 242KB)

* Revised past progress