On March 11 2011, turbines and reactors of Fukushima Daini Nuclear Power
Station Units 1 to 4 (Boiling Water Reactors, rated output 1,100 Megawatts)
that we had been constantly operating at rated thermal output were
automatically shut down at 2:48 pm due to the Tohoku-Chihou-Taiheiyou-Oki
Earthquake (previously announced on March 11).

At 7:15 am on March 15, the reactor of Unit 4 achieved cold shutdown. As a
result, all reactors of Units 1 to 4 at Fukushima Daini Nuclear Power
Station achieved cold shutdown (previously announced on March 15). 

As of 3:00 pm on August 18, the reactors of Unit 1 to 4 are in cold
shutdown (please refer to the appendix). We will continue to make our
endeavors to further stabilize each plant of cold shutdown. 

 
‹Updates are underlined> 
 After the occurrence of the earthquake at around 2:36 pm on August 19 
 (previously announced on August 19 by "Plant status after an earthquake 
 occurred at Fukushima Daini Nuclear Power Station"), we implemented 
 inspection of each plant, as the result there were no abnormalities on the 
 plants. 
 The monitoring posts on Fukushima Daini's boundary indicated within normal 
 range of fluctuation before and after the earthquake. As far as we have 
 confirmed, there has been no radioactive impact to the outside environment. 
 

Appendix: TEPCO Plant Status of Fukushima Daini Nuclear Power Station 
                                                         (PDF 45.5KB)