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.

1. Inspection/Restoration Status 

 ○ Inspection and restoration completed between March 7th to March 13th, 2008.
   (Completed on the following date) 

  • Unit No.1 Reactor pressure vessel inspection (nozzle parts etc.):
      March 7th 
  • Unit No.3 Fuel and control rod inspection (spent fuel pool rack etc.):
      March 10th 
  • Unit No.5 Inspection of reactor recirculation piping applicable to 
    the Fitness-for-Service rule (ultrasonic testing): 
      March 12th 

 ○ Inspection and restoration to be commenced between March 14th to March 19th, 
    2008  
    (To be commenced on the following date)  

  • Unit No.1 Restoration work of submerged equipment on ground floor 5 of 
    the reactor combination building: 
      March 17th
  • Unit No.2 Fuel and control rod inspection (spent fuel pool rack etc.):
      March 18th 
  • Unit No.2 Main generator inspection: 
      March 14th 
  • Unit No.3 Fuel and control rod inspection (visual inspection of fuel): 
      March 14th 
  • Unit No.3 Inspection of reactor recirculation piping applicable to the 
    Fitness-for-Service rule (preparation for detailed inspection):
      March 14th 
  • Unit No.3 Main transformer inspection (preparation for transportation 
    into the factory): 
      March 17th 
  • Unit No.3 Main generator inspection (withdrawal of rotor): 
      March 19th 
  • Unit No.5 Excitation transformers inspection (internal inspection): 
      March 17th 
  • Unit No.5 Excitation transformers inspection (preparation for transportation 
    into the factory): 
      March 18th 
  • Unit No.6 Stack inspection (detailed inspection for top of stack): 
      March 17th 
  • Unit No.7 Reactor well inspection (confirmation of leakage): 
      March 14th 
  • High-voltage start-up transformer #3 inspection (preparation for inspection): 
      March 14th 
  • Restoration work of filtrate tank #4: 
      March 16th 
  • Outdoor fire protection system piping to be placed above ground, installation 
    of fire protection tank, etc. (Ohminato-side: work on installing fire protection 
    system piping above ground): 
      March 17th 
  • Restoration work for port facility (wharf, relocation of south-side discharge 
    canal sea water monitor): 
      March 17th

 ○ Work Schedule of Major Inspection/Restoration from March 9th to April 5th, 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

2. 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 March 6th to March 12th, 2008.

○ Incidents Information (relating to the Chuetsu-Oki Earthquake)  
<Reports from Mar. 6 to Mar. 12, 2008>  
 ○ Other Findings 

  • Unit No.7:
    Forks of the 14th-stage rotor blades of the low-pressure turbine (C) have been 
    inspected since March 7 and based on visual inspection after all forks were 
    removed from the turbine, no additional damage was found. Ultrasonic testing 
    and penetration testing will be conducted on rotor blade forks. Fracture surface 
    analysis on the damaged fork revealed "beach marks" - striation patterns - 
    characteristic of fracture caused by metal fatigue. Detailed investigation will 
    be continued.

  • Solid waste storage warehouse: 
    21,801 drums have been confirmed as of February 29th, 2008.  

  • Information on Nonconformances (those related to: the Chuetsu-Oki Earthquake; 
    Grades As, A, B, C, D; and non-graded)  
 * Numbers are corrected due to incidents that had been double-counted (11 cases), 
    unrelated to the earthquake (4 cases), not applicable as nonconformance (3 cases), 
    and an addition of a nonconformance incident. 

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 196KB)