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 16th to May 22nd, 2008
    (Completed on the following date) 

  • 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 House transformers inspection (3A) (transportation into the 
    factory):
      May 17th 
  • Unit No.5 Jet pump inspection (verification work for installation): 
      May 21st 
  • Unit No.5 Pressure suppression chamber inspection: 
      May 20th 
  • 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 
  • Unit No.5 Stack inspection (detailed inspection for top of stack): 
      May 13th* 
  • Unit No.7 Reactor internal pump input transformer inspection (installation work): 
      May 21st 
  • No.3 High-voltage start-up transformer #3 inspection (transportation into the 
    factory): 
      May 16th

 ○ Inspection and restoration to be commenced between May 23rd to May 29th, 2008  
    (To be commenced on the following date)  

  • Unit No.1 Inspection of new fuel storage warehouse and new fuels in the 
    warehouse (inspection of new fuel storage warehouse): 
      May 26th 
  • Unit No.1 Inspection of new fuel storage warehouse and new fuels in the 
    warehouse (inspection of new fuels):
      May 27th 
  • Unit No.1 Stack inspection (detailed inspection for top of stack): 
      May 26th 
  • Unit No.2 Main transformer inspection(on-site transportation):
      May 29th 
  • Unit No.4 Main exhaust duct inspection and restoration (survey prior to 
    restoration work): 
      May 26th 
  • On-site check, inspection and restoration of the oil protection bank for the 
    transformer (#2 preparation work for restoration): 
      May 20th*

                                                     * Work schedules added this week.

 ○ Work Schedule of Major Inspection/Restoration from May 18th to June 14th, 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 15th to May 21st, 2008.  

○  Incidents Information (relating to the Chuetsu-Oki Earthquake)  
 <Reports from May 15 to May 21, 2008>  
 ○ Other Findings 
  • Unit No.3: 
    Internal inspection of the low pressure turbine (B) has been conducted since 
    May 13th, 2008 with the turbine casing opened. On May 20th, evidence of wear 
    were found on rotor blades (stages 9th to 14th) with a maximum size of about 
    4mm assumed to have been caused by contact with stator blades. On the stator 
    blade, wear with a maximum size of about 2mm assumed to have been caused by 
    contact with rotor blades has also been found. The location of contact and 
    the size of wear and evidence of contact are similar to those found on the 
    low pressure turbine (A), which has already been inspected.
    Repair works on the location of wear on the rotor blades and stator blades 
    will be investigated and inspection of the low pressure turbine (C) 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 180KB)