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 occurred at 2:46 pm.
Due to the affect of tsunami accompanied by the earthquake, on each unit of 
1, 2 and 4 has lost its cooling function of reactor core and as the 
temperature of pressure suppression chamber has exceeded 100°C (which is 
relevant event under the Act on Special Measures Concerning Nuclear 
Emergency Preparedness), Declaration of a Nuclear Emergency Situation was 
issued by the Prime Minister on March 12.
Emergency response measures were taken such as restoration of electric 
motors and recovery of function of residual heat recovery pumps and cold 
shut down has been achieved for each of the unit by March 15. Thereafter, 
emergency response measures had been continuously taken such as restoration 
of power supply functions and diversification of residual heat recovery 
system and we have endeavored to maintain stable cold shut down status of 
the plant.

Implementation status of emergency response measures were confirmed by the 
government that it is in the condition to continuously maintain stable cold 
shut down status of the plant and on December 26, declaration of 
cancellation of a Nuclear Emergency Situation was issued by the Prime 
Minister.

In accordance with the declaration, we will take measures for restoration 
from nuclear emergency to stably maintain cold shut down status of each 
unit and endeavor to enhance stable condition of the plant. 
 
We announce the plant status as of 3:00 pm today per the attachment. 
 (Updates since the previous press release underlined)

Unit 4 
· Status of inspection work of the main turbine of Unit 4
On November 7 2011, we started inspection work of the main turbine of Unit
4 in order to confirm the facilities' status after the quake. (November 7
2011, previously announced)
On November 11 2012, we finished visual inspection in the low pressure
turbine (A) and the high pressure turbine. Although we found not only
some cracks caused by normal operation but also some contact traces, which
is located at moving and stationary blade of the low pressure turbine (A)
and the high pressure turbine and oil thrower bearing, caused by the
Tohoku-Chihou-Taiheiyou-Oki Earthquake, we confirmed they are minimal
damage and we made sure there was no security issues. 
  
Appendix1: Status of inspection work of the main turbine of Unit 4 
                                                       (PDF 124KB) 
Appendix2: TEPCO Plant Status of Fukushima Daini Nuclear Power Station 
                                                          (PDF 13.9KB) 

*1 : moving blade 
 The moving blade is rotated by the intake steam, which is set at rotor
*2 : stationary blade 
 The stationary blade is structure, which is fixed on the casing in order 
 to guide the intake steam to the moving blade effectively.