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 October 30, the reactors of Units 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. 

The underlined parts are the updates from the previous press release 

Resumption of installation construction of shake-control facility to the
exhaust stack. 
- We have suspended the installation construction of shake-control 
  facility* to the exhaust stack which had been implemented since 
  November 2010, because member to fix a tower crane for construction was 
  damaged due to the Tohoku-chihou Pacific Coast Earthquake occurred on 
  March 11, 2011, causing fatal accident inside the operation room of the 
  tower crane. 
- As replacing the main body of tower crane which fixed member was 
  damaged and restarting construction of shake-control facility to the 
  exhaust stack, we conducted measures for safety listed below not to 
  damage on facilities and workers even if the similar sized earthquake 
  of the Tohoku-Chihou-Taiheiyo-Oki Earthquake occurred. 
  · Reduce movement at the top of tower crane and operating room by 
    taking down the connecting position of tower crane and exhausting stack. 
  · Reinforcement of fixed member (size up of the cross-section of the 
    fixed member) at the leg of the tower crane jib. 
  · Improving safety by setting seatbelt in the operating room. 
- We carried-in the heavy machinery for replacement of main body of tower 
  crane and restarted this construction from today. (work period: will be 
  completed by January 2013 ) 

*Shake-control facility 
 The equipment (shake-control oil damper) which is installed between the 
 tower for supporting exhaust stack and its main body to reduce earthquake- 
 induced vibration 

Appendix: TEPCO Plant Status of Fukushima Daini Nuclear Power Station 
                                                         (PDF 16.2KB)