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 November 2nd to November 8th, 2007
    (Completed on the following date)
  • Unit No.1 Reactor pressure vessel inspection (support structure): 
      November 7th
  • Unit No.3 Excitation transformers oil extraction and internal inspection:
      November 3rd
  • Unit No.5 Reactor pressure vessel inspection (support structure):
      November 2nd
  • Unit No.6 Refueling floor service tools inspection (stud tensioners, etc.):
      November 3rd 

 ○ Inspection and restoration to be commenced between November 9th to November 
    15th, 2007
    (To be commenced on the following date)
  • Unit No.1 Turbine internal inspection: 
      November 9th
  • Unit No.2 Reactor pressure vessel inspection (support structure):
      November 12th
  • Unit No.2 House transformers (2A) oil extraction and internal inspection: 
      November 9th
  • Unit No.3 Refueling machine inspection: 
      November 12th
  • Unit No.4 Reactor pressure vessel inspection (support structure):
      November 9th
  • Unit No.6 Reactor internal inspection: 
      November 13th
  • Unit No.6 Reactor pressure vessel inspection (nozzle parts etc.):
      November 7th* 
  • Unit No.6 Removal of spent fuel pool underwater work platform:
      November 14th 
  • Unit No.7 House transformers (7A) oil extraction and internal inspection: 
      November 13th
  • Unit No.7 House transformers (7B) oil extraction and internal inspection:
      November 7th*
                                                      *Not announced last week.

 ○ Work Schedule for Major Inspection/Restoration from November 4th to December 
    1st, 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 November 1st to November 7th, 2007.

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


<Reports from Nov. 1 to Nov. 7, 2007>


 ○ Other Findings
  • Unit No.7: 
    Inspection of the reactor well is scheduled from November 2nd to 11th. Minor 
    scratch leading to a leak was found in two places yesterday. We will continue 
    inspecting the reactor well including the area not yet inspected, while making 
    temporary repair of the confirmed scratch and preparing for the in-core inspection.

  • Unit No.7: 
    The control rod that could not be pulled out initially was removed on November 
    1st and 2nd, and was disassembled and inspected November 3rd to 7th. Detailed 
    inspection, measurement and analyses of the labyrinth seal and ratch mechanism 
    did not reveal any anomaly (such as foreign material or a large damage) that 
    could specify the cause of the malfunction. Based on results of the investigation, 
    the cause is presumed to be of a temporary nature. However, we will inspect 
    equipment on the reactor-side (control rod, fuel support, fuel guide) as well.

  • Information on Nonconformances (those related to: the Chuetsu-Oki Earthquake; 
    Grades As, A, B, C, and D; and non-graded)

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 236KB)