Corporate Information

Press Release (Aug 02,2007)
Status of Nonconformance Management Related to the 2007 Niigata-Chuetsu-Oki Earthquake
We are announcing the status of nonconformance management related to the 2007 
Niigata-Chuetsu-Oki Earthquake totaling 1,263 nonconformances confirmed by 
July 26.
Of the 1,263 nonconformances, those rated as As, A, or B have basically been 
announced already.

< Number of nonconformances related to the 2007 Niigata-Chuetsu-Oki Earthquake 
(those confirmed by July 26) >
< Example > In the report, events were classified as follows. As: Fire of Unit 3 house transformer 3B. (reported on July 19) Leak of water containing radioactivity into the uncontrolled areas on the third floor and third floor mezzanine level of the Unit 6 reactor building. (reported on July 19) A: Detection of iodine and radioactive particulates (chromium-51 and cobalt-60) in periodic measurements of releases from the Unit 7 main exhaust stack. (reported on July 19) B: Subsidence and displacement of the Unit 2 transformer oil retaining wall. (reported on July 19) C: Falling of lockers in the locker room of the administration building. D: Partial damage to the shutter of the access door for large equipments on the first floor of the turbine building. * Definition of Nonconformance: A nonconformance is a state or an action (judgment) deviating from the normal state or action (judgment). In a power plant, nonconformances include a wide range of events from troubles with legal reporting obligations to minor breakdown of instrumentation and lighting troubles found during normal plant inspections. *Note that nonconformance control grades differ from seismic design classes.
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