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 June 27th to July 3rd, 2008  
     (Completed on the following date) 

   • Unit No.1 Stack inspection (Unit No.1 and Unit No.2) (Detailed inspection for 
     top of stack): 
      June 28th 
   • Unit No.2 Inspection of new fuel storage warehouse and new fuels in the warehouse 
     (Inspection of new fuel storage warehouse): 
      July 1st 
   • Unit No.4 Fuel and control rod inspection (visual inspection of fuels): 
      July 3rd 
   • On-site check, inspection and restoration of the oil protection bank for the 
     transformer (Unit No.3 Recovery of oil-contaminated soil): 
      June 30th 
   • Outdoor fire protection system piping to be placed above ground, etc. (Ohminato-side: 
     work on installing fire protection system piping above ground): 
      July 27th 
   • Outdoor fire protection system piping to be placed above ground, etc. (Replacement 
     work on the fire protection system piping around the Arahama-side building from 
     underground to above ground): 
      July 28th 

 ○ Inspection and restoration to be commenced between July 4th to July 10th, 2008  
     (To be commenced on the following date)  

   • Unit No.1 Main transformer inspection (On-site transportation): 
      July 10th 
   • Unit No.1 House transformers inspection (1A and 1B) (On-site transportation): 
      July 9th 
   • Unit No.1 500kV power cable inspection (Removal of cables): 
      July 9th 
   • Unit No.5 Inspection of new fuel storage warehouse and new fuels in the warehouse 
     (Inspection of new fuel storage warehouse): 
      July 7th 
   • Unit No.5 Inspection of new fuel storage warehouse and new fuels in the warehouse 
     (Inspection of new fuels): 
      July 8th
   • Unit No.6 Discharge canal inspection and restoration (Removal of bypass pipe): 
      July 10th 
   • Unit No.6 Seismic reinforcement works such as pipe supports (reinforcement works 
     for pipe supports): 
      July 4th 
   • Unit No.7 Seismic reinforcement works such as pipe supports (Reinforcement works 
     for the roof truss of the reactor building): 
      July 10th 
   • On-site check, inspection and restoration of the oil protection bank for the 
     transformer (Unit No.1 preparation for restoration work): 
      July 7th 

 ○ Work Schedule of Major Inspection/Restoration from June 29th to July 26th, 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 June 26th to July 2nd, 2008.  


 ○ Incidents Information (relating to the Chuetsu-Oki Earthquake)


 < Reports from June 26 to July 2, 2008 >


 ○ Other Findings 
  • Unit No.4 
    The casing for the low-pressure turbine (B) has been opened and internal inspection of 
    the turbine has been conducted since June 19, 2008. On June 27, wears with a maximum 
    length of about 3mm have been found on; the tip of rotor blades (from stages 9 to 11 
    of the shroud), moisture separator blades (from stages 12 to 14 on the generator-side), 
    and the base of a rotor on the 9th stage on the generator-side. Wears with a maximum 
    length of about 2mm have been found on stators, presumably caused by impact with rotors.
    The location and size of wear and contact of rotors and stators that were found this 
    time are similar to those confirmed in low-pressure turbine (A). Contact location of 
    rotors and stators will be repaired.  Inspection of low-pressure turbine will also be 
    conducted. 

  • Unit No.6
    Visual inspection was conducted for forks of 304 rotor blades on the 14th stage of 
    the low-pressure turbine (C) (152 blades each on generator-side and turbine-side).  
    As a result, no damage was found. Additionally, non-destructive testing resulted 
    in indications on the forks of a rotor blade on the turbine-side and 33 rotor blades 
    on the generator-side.  
    Subsequently, on the basis of the results of inspections that are underway, inspections 
    will be conducted on the 15th stage and the 16th stage.  

  • Unit No.7
    Visual inspection was conducted for forks of 252 rotor blades on the 15th stage and 260 
    rotor blades on the 16th stage of the low-pressure turbine (A) (15th stage: 126 blades 
    each on generator-side and turbine-side; 16th stage: 130 blades each on generator-side 
    and turbine-side). As a result, no damage was found.  Additionally, non-destructive 
    testing resulted in indications on the fork of a rotor blade on the turbine-side and 
    18 rotor blades on the generator-side of 16th stage. Indication was not found on 
    generator-side and turbine-side of 15th stage.  

  • Visual inspection of fuels for Unit No.4 was completed on July 3rd, 2008. "Fuel and 
    control rod inspection" has been completed for all 7 units.  As a result, no impact 
    of the Niigata-Chuetsu-Oki Earthquake was confirmed.  

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 99.1KB)