We are announcing the status of major inspections and restoration works and 
nonconformances at TEPCO's Kashiwazaki-Kariwa Nuclear Power Station after 
the Niigata-Chuetsu-Oki Earthquake.  

Inspection/Restoration Status

 ○ Inspection and restoration completed between May 9th to May 15th, 2008  
   (Completed on the following date) 

  • Unit No.3 Main generator inspection (transportation of rotor): 
    To be completed on May 15th 

 ○ Inspection and restoration to be commenced between May 16th to May 22nd, 2008
   (To be commenced on the following date)  

  • Unit No.1 Main transformer inspection (preparation for on-site transportation):
       May 12th* 
  • Unit No.2 House transformers inspection (2A, 2B) (transportation into the 
    factory):
       May 17th 
  • Unit No.2 Excitation transformers inspection (on-site transportation): 
       May 16th 
  • Unit No.3 Core shroud inspection: 
       May 19th 
  • Unit No.3 House transformers inspection (3A) (transportation into the factory):
       May 17th 
  • Unit No.5 Jet pump inspection (verification work for installation): 
       May 19th 
  • Unit No.5 Main transformer inspection (preparation for on-site transportation): 
       May 14th* 
  • Unit No.5 House transformers inspection (5A, 5B) (transportation into the factory): 
       May 16th 
  • Unit No.5 Excitation transformers inspection (transportation into the factory): 
       May 16th 
  • No.3 High-voltage start-up transformer #3 inspection (on-site transportation and 
    transportation into the factory): 
       May 14th*

                                                          *Work schedules added this week.

 ○ Work Schedule of Major Inspection/Restoration from May 11th to June 7th, 2008

  • Work Schedule of the Main Inspection/Restoration of the Kashiwazaki-Kariwa Nuclear 
     Power Station in Response to the Niigata-Chuetsu-Oki Earthquake (during 4 Weeks)
                                                                          ....Appendix 

(Reference) 
 Nonconformances Found in the Inspection and Restoration Works Performed after the 
 Niigata-Chuetsu-Oki Earthquake

 Based on the "Public Announcement Regarding Nonconformance Found in the Inspection 
 and Restoration Works Performed after the Niigata-Chuetsu-Oki Earthquake", the Tokyo 
 Electric Power Company, Incorporated (TEPCO) provides this announcement containing 
 incidents information reported from May 8th to May 14th, 2008.  

○  Incidents Information (relating to the Chuetsu-Oki Earthquake)  
 <Reports from May 8 to May 14, 2008>  
 ○ Other Findings 
  • Information on Nonconformances (those related to: the Chuetsu-Oki Earthquake; 
    Grades As, A, B, C, D; and non-graded)      * Numbers were corrected to reflect elimination of incidents that were later 
       found to have been unrelated to the earthquake (4 cases) and not applicable
        as nonconformance (1 case).

 • Unit No.7: 
   Partial breakages were found on forks of 2 rotor blades on the turbine-side of 
   14th stage of the low-pressure turbine (B) and (C).  Investigation of the causes 
   and detailed inspection are going on (announced on March 13th,  March 19th, 
   March 27th, April 3rd, April 10th, April 17th and May 8th, 2008).  
   No damage was found based on non-destructive inspection for forks of 252 rotor 
   blades of 15th stage of the low-pressure turbine (B) (126 blades each on 
   generator-side and turbine-side).
   Investigation on the cause of the damages and the indications on the forks of 
   rotor blades will be continued.  Visual inspection and non-destructive inspection 
   for forks of rotor blades on the 15th and 16th stage of the low-pressure turbine 
   (A) and (C), both of which have the same structure as those forks of rotor blades 
   on the 14th stage, will also be conducted.  
   As for unit No.6, visual inspection and non-destructive inspection for forks of 
   rotor blades on the 14th stage of the low-pressure turbine (A), (B) and (C) and 
   forks of rotor blades on the 15th and 16th stage of the low-pressure turbine (B) 
   will be conducted.  

Appendix: Work Schedule of the Main Inspection/Restoration of the Kashiwazaki-Kariwa Nuclear 
          Power Station in Response to the Niigata-Chuetsu-Oki Earthquake (during 4 Weeks) 
                                                                               (PDF 189KB)