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 October 17th to October 23rd, 2008 
    (Completed on the following date) 

   • Unit No.6 Discharge canal inspection and restoration (Removal of bypass pipe etc.): 
      October 18th 
   • Unit No.7 Seismic reinforcement works (Seismic reinforcement works for exhaust stack): 
      October 16th*
   • Restoration work for port facility (Transportation and restoration of the south-side 
     discharge canal sea water monitor): 
      October 17th 

 ○ Inspection and restoration to be commenced between October 24th to October 30th, 2008 
    (To be commenced on the following date) 

   • Unit No.1 Repair work of steam separator (Preparation for repair work): 
      October 24th 
   • Unit No.1 Repair work of steam separator (Repair work): 
      October 30th 
   • Unit No.1 Stack inspection (Unit No.1 and 2) (Inspection of stack radiation monitor 
     sampling pipe): 
      October 27th 
   • Unit No.3 Stack inspection (Inspection of stack radiation monitor sampling pipe/restoration 
     work of stack radiation monitor building): 
      October 14th*
   • Unit No.4 Stack inspection (Inspection of stack radiation monitor sampling pipe/restoration 
     work of stack radiation monitor building): 
      October 24th 
   • Unit No.5 Circulating water pipe inspection (Foundation improvement, excavating work, and 
     inspection of pipes): 
      October 25th 
   • Unit No.6 Seismic reinforcement works (Seismic reinforcement works for reactor building 
     ceiling crane): 
      October 28th 
   • Unit No.7 Seismic reinforcement works (Clearance of seismic reinforcement works equipment 
     and materials for exhaust stack): 
      October 17th* 
   • Unit No.7 System functional test (Functional test of stand-by gas treatment system): 
      October 24th 
   • Unit No.7 System functional test (Rated capacity verification test for the emergency diesel 
     generator (B)): 
      October 27th 
   • Unit No.7 System functional test (Rated capacity verification test for the emergency diesel 
     generator (C)): 
      October 28th 
   • Unit No.7 System functional test (Functional test of main steam isolation valve): 
      October 28th 
   • Unit No.7 System functional test ( Functional test of instrument compression air system): 
      October 28th 
   • Unit No.7 System functional test (Functional test of the emergency diesel generator, high 
     pressure core flooder system, low pressure flooder system and reactor component cooling 
     water system): 
      October 30th 
                                                            * Work schedules added this week.

 ○ Work Schedule of Major Inspection/Restoration from October 19th to November 15th, 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 October 16th to October 22nd, 2008. 

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


   < Reports from October 16 to October 22, 2008 >


  ○ Other Findings
   • Unit No.3
     During inspection of the main exhaust stack radiation monitor sampling pipe, after 
     removing the insulation, on Oct. 14, 2008, damage was found in the suction-side pipe. 
     This led to the confirmation of the possibility of sucking in ambient air. 
     Subsequent evaluation on the impact on radioactivity concentration measurement results 
     due to suction of ambient air from the damaged pipe confirmed there is no impact. We 
     will continue investigation on the cause of the damage of the pipe. We will also 
     inspect the same pipe of other units as planned.

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 41.8KB)