We are announcing the status of major inspections and restoration works (from October
14th to November 10th, 2007) and non-conformance at TEPCO´s Kashiwazaki-Kariwa
Nuclear Power Station after the Niigata-Chuetsu-Oki Earthquake.
1. Inspection/ Restoration Status
○ Inspection and restoration completed between October 12th to October 18th, 2007
• Unit No. 1 Reactor combination building B5F level leakage water disposal:
Floor cleaning completed on October 12th
• Unit No. 1 House transformers (1B) oil extraction and internal inspection:
Inspection completed on October 12th
• Unit No. 1 Excitation transformers oil extraction and internal inspection:
Inspection completed on October 18th
• Unit No. 2 Refueling machine inspection:
Inspection completed on October 16th
• Unit No. 2 Refueling floor service tools inspection (stud tensioners, etc.):
Inspection completed on October 13th
• Unit No. 2 Removal of spent fuel pool underwater work platform:
Work completed on October 18th
• Unit No. 5 Turbine building ceiling crane inspection:
Inspection completed on October 17th
○ Inspection to be commenced between to October 19th to October 25th, 2007.
• Unit No. 1 Refueling machine inspection
• Unit No. 2 Reactor head opening and in-core inspection
• Unit No. 2, 6 and 7 Reactor pressure vessel inspection preparation
• Unit No. 2 House transformers (2A) visual inspection, oil extraction and internal
inspection preparation
• Unit No. 2 House transformers (2B) visual inspection preparation
• Unit No. 3 Refueling floor service tools inspection (stud tensioners, etc.)
• Unit No. 3 Excitation transformers oil extraction and internal inspection
preparation
• Unit No. 4 Refueling machine inspection
• Unit No. 5 Reactor head opening
• Unit No. 5 Turbine internal inspection
• Unit No. 7 Main generator inspection
• Unit No. 7 House transformers (7A, 7B) oil extraction and internal inspection
preparation
• Low-voltage start-up transformer 3SA oil extraction and internal inspection
○ Work Schedule for Major Inspection/Restoration from October 14th to November
10th, 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 11th to October 17th, 2007 and the
occurrence status of nonconformances (that have been deliberated) reported from
October 4th to October 10th, 2007.
○ Incidents Information (relating to the Chuetsu-Oki Earthquake)
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<Reports from October 11th to October 17th, 2007>
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○ Information on Nonconformances (those related to: the Chuetsu-Oki Earthquake;
Grades As, A, B, C, and D; and non-graded)
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○ Other Findings
• We will make a monthly announcement regarding the status of the restoration
and progress of "the drum soundness verification work at the solid waste
storage facility" (commenced on October 9th).
• Unit No. 2
Conducted the visual inspection of the inside of the spent fuel pool with
the removal of the underwater work platform (removed on October 17th).
Confirmed 2 minor scratches on the legs of the work platform and a minor
scratch on the wall of the pool (planned to be completed on October 18th).
• Unit No. 6 and 7
Confirmed a crack inside the discharge canal concrete of Unit No. 7 during
its inspection.
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 211KB)
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