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 October 26th to November 1st, 2007
    (Completed on the following date)
  • Unit No.1 Turbine building ceiling crane inspection: 
      October 26th
  • Unit No.1 Main transformer visual inspection:
      Planned to be completed on November 1st
  • Unit No.3 Turbine building ceiling crane inspection:
      October 30th
  • Unit No.3 Main transformer oil extraction/internal inspection:
      October 26th
  • Unit No.5 Reactor head opening:
      October 29th
  • Unit No.6 Main transformer inspection (transportation into the factory):
      October 31st 
  • Low-voltage start-up transformer 3SA oil extraction/internal inspection 
    (in service):
      October 26th 

 ○ Inspection and restoration to be commenced between November 2nd to November 
    8th, 2007
    (To be commenced on the following date)
  • Unit No.1 Reactor pressure vessel inspection:
      November 5th
  • Unit No.2 Excitation transformers visual inspection preparation: 
      November 8th
  • Unit No.3 Reactor pressure vessel inspection: 
      November 8th
  • Unit No.4 Reactor pressure vessel inspection preparation: 
      November 5th
  • Unit No.4 Turbine internal inspection: 
      November 8th
  • Unit No.5 Main generator inspection: 
      November 3rd
  • Unit No.6 Reactor head opening: 
      November 5th 
  • Unit No.6 and 7 Reactor internal pump input transformer 
    (preparation for transportation into the factory):
      November 1st*
  • Unit No.7 Main generator inspection: 
      November 2nd 
  • Unit No.7 Verification operation of feedwater pump and condensate pump: 
      November 6th 

                                                          *Not announced last week.

 ○ Work Schedule for Major Inspection/Restoration from October 28th to November 
    24th, 2007
  • Work Schedule of the Main Inspection/Restoration of 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 October 25th to October 31st, 2007.

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


<Reports from Oct. 25 to Oct. 31, 2007>


 ○ Other Findings
  • Unit No.7: 
    Commenced drainage of the reactor well on October 26th and completed on October 
    27th. As a result, water inflow to the leak detection piping of the reactor 
    well liner has ceased almost completely on October 28th. Since the amount of 
    leakage from the wall at the 2nd floor of the reactor building has decreased 
    as the water level of the reactor well decreased, leakage is presumed to be 
    originating from the reactor well. Therefore, we will identify the leak spot 
    by inspecting the reactor well. 

  • Unit No.7: 
    Completed the withdrawal of the one control rod that could not be initially 
    withdrawn on October 24th (announced on October 25th). Disassembly and 
    inspection of the control rod drive will be conducted to determine the cause.
    Inspection of the reactor internals (control rods, control rod guides, fuel 
    supports) will be conducted after completing the inspection of the reactor 
    well liner.

Appendix: Work Schedule of the Main Inspection/Restoration of Kashiwazaki-Kariwa Nuclear 
          Power Station in Response to the Niigata-Chuetsu-Oki Earthquake
          (during 4 Weeks)(PDF 232KB)