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 20th to March 27th, 2008.
    (Completed on the following date) 

  • Unit No.3 Main generator inspection (withdrawal of rotor): 
      March 19th * 
  • Unit No.5 Fuel and control rod inspection (visual inspection of fuel): 
      March 24th 
  • Unit No.6 Fuel and control rod inspection (visual inspection of control rod): 
      March 24th 
  • Unit No.6 Fuel and control rod inspection (visual inspection of channel box): 
      March 24th 
  • Unit No.7 Reactor core isolation cooling system inspection (inspection of pump): 
      March 24th 
  • Unit No.7 Reactor core isolation cooling system inspection (inspection of turbine):
      March 26th 
  • Unit No.7 Reactor internal pump input transformer inspection (carrying in): 
      March 25th 
  • Unit No.7 500 kV power cable (OF cable) inspection (energization for testing 
    without load):
      March 22nd 
  • Outdoor fire protection system piping to be placed above ground, installation of 
    fire protection tank, etc. (replacement of onsite panel of foam fire extinguisher):
      March 27th 

                                                        * Work schedules added this week

 ○ Inspection and restoration to be commenced between March 27th to April 3rd, 2008
    (To be commenced on the following date)

  • Unit No.1 Stack inspection (inspection for substructure of piles): 
      April 2nd 
  • Unit No.2 Excitation transformers inspection (preparation for transportation into 
    the factory): 
      March 31st 
  • Unit No.3 Pressure suppression chamber inspection : 
      March 28th 
  • Unit No.3 Main exhaust duct inspection and restoration (survey prior to restoration 
    work):
      April 1st 
  • Unit No.4 Fuel and control rod inspection (visual inspection of channel box): 
      March 29th 
  • Unit No.5 Pressure suppression chamber inspection (preparation for inspection): 
      March 31st 
  • Unit No.5 Fuel and control rod inspection (inspection of spent fuel pool rack etc.): 
      March 31st 
  • Unit No.6 House transformer (6A, 6B) inspection (preparation for transportation into 
    the factory): 
      March 31st 
  • Unit No.6 Main generator inspection (withdrawal of rotor): 
      April 3rd 
  • Unit No.6 500 kV power cable (OF cable) inspection (energization for testing without 
    load):
      March 29th 
  • Unit No.7 New fuel storage warehouse and new fuels in the warehouse inspection: 
      April 1st 
  • Unit No.7 Main transformer inspection (preparation for carrying in): 
      April 1st 
  • Unit No.7 Stack inspection (internal inspection): 
      March 27th 
  • High-voltage start-up transformer #3 inspection (internal inspection): 
      April 2nd 
  • Outdoor fire protection system piping to be placed above ground, installation of fire 
    protection tank, etc. (Arahama-side: work on installing fire protection system piping 
    above ground): 
      March 27th 

 ○ Work Schedule of Major Inspection/Restoration from March 23rd to April 19th, 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 19th to March 26th, 2008.

○ Incidents Information (relating to the Chuetsu-Oki Earthquake)  
<Reports from Mar. 19 to Mar. 26, 2008>  
○ Other Findings 
  • Unit No.7: 
    As for the inspection for forks of rotor blades on the turbine-side of 14th-stage 
    of the low-pressure turbine (C), damage was found on a part of one rotor blade on 
    March 3rd, 2008. Detailed inspection to verify the soundness of the relevant part 
    has been conducted since March 7th, 2008, and based on visual inspection, no 
    additional damage was found. Non-destructive inspection was conducted for forks 
    of 151 rotor blades except for the one already found to be damaged. As a result, 
    indications were found on the fork of 17 rotor blades (announced on March 13th, 
    and March 19th, 2008).
    Subsequently, visual inspection and non-destructive inspection were conducted for 
    forks of 152 rotor blades on the generator-side of 14th-stage of the low-pressure 
    turbine (C). As a result, no additional damage was found.
    Investigation on the cause of the indication will be continued as well as visual 
    and non-destructive inspection for other forks of the 14th-stage of the low-pressure 
    turbines (A) and (B).

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 199KB)