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 23rd to May 29th, 2008
    (Completed 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.3 Inspection of reactor recirculation piping applicable to 
    the Fitness-for-Service rule (detailed inspection): 
      May 29th
  • Unit No.3 Pressure suppression chamber inspection: 
      May 22nd* 

 ○ Inspection and restoration to be commenced between May 30th to June 5th, 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 fuels):
      May 27th* 
  • Unit No.1 Excitation transformers inspection (preparation for transportation): 
      June 3rd 
  • Unit No.2 Main transformer inspection (on-site transportation): 
      May 31st 
  • Unit No.2 500ｋV power cable inspection (removal of cables): 
      June 2nd 
  • Unit No.3 Main transformer inspection (on-site transportation): 
      June 5th 
  • Unit No.3 Main transformer inspection (transportation into the factory): 
      June 6th 
  • Unit No.3 Stack inspection (internal inspection): 
      June 2nd 
  • Unit No.3 Circulating water pipe inspection (foundation improvement, excavating work, 
    and inspection of pipes): 
      June 3rd 
  • Unit No.4 Main transformer inspection (preparation for transportation into 
    the factory):
      June 2nd 
  • Unit No.4 Main exhaust duct inspection and restoration (survey prior to restoration 
    work): 
      June 2nd 
  • Unit No.5 Main exhaust duct inspection and restoration (preparation work for 
    restoration): 
      June 2nd 
  • Unit No.6 Inspection of new fuels in the new fuel storage warehouse:
      May 30th 
  • Unit No.6 Seismic reinforcement of pipe supports (preparation works such as carrying 
    in materials and installing scaffoldings):
      June 2nd 
  • Unit No.7 Reactor internal pump input transformer inspection (electrical testing): 
      June 5th 
  • Unit No.7 Seismic reinforcement of pipe supports (preparation works such as carrying 
    in materials and installing scaffoldings):
      June 2nd 
  • On-site check, inspection and restoration of the oil protection bank for the 
    transformer (Unit No.5 preparation work for restoration): 
      June 2nd  
  • House boilers inspection (Ominato-side 4C): 
      May 26th* 
  • Restoration work for filtrate tank #3 and #4 (#3 restoration work): 
      June 2nd 
  • Restoration and reinforcement work for the on-site/outside roads & slope, etc. 
    (reinforcement work): 
      May 16th*

                                                           * Work schedules added this week.

 ○ Work Schedule of Major Inspection/Restoration from May 25th to June 21st, 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 22nd to May 28th, 2008.

 ○  Incidents Information (relating to the Chuetsu-Oki Earthquake)  
  <Reports from May 22 to May 28, 2008>  
 ○ Other Findings 
  • Unit No.7 
    As part of a verification process of the reactor pressure vessel (RPV), a pressure/leak 
    test will be conducted from June 3rd, 2008 by increasing the pressure of the RPV to 
    approximately 3.5MPa, which is about half the normal operating pressure. As for the 
    primary containment vessel, a leak test will be carried out from June 11th to confirm 
    its leak-tightness. 

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 183KB)