PNO-IV-2008-007A, Pacific Gas and Electric Company, Diablo Canyon Power Plant, Notice of Unusual Event at Diablo Canyon, Unit 2 - UpdateML082520970 |
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Diablo Canyon |
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Issue date: |
09/08/2008 |
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From: |
Vincent Gaddy, Peck M NRC/RGN-IV/DRP |
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To: |
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References |
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PNO-IV-2008-007A |
Download: ML082520970 (1) |
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Category:NRC Preliminary Notification of Event/Occurrence
MONTHYEARPNO-IV-11-011, A; Update Diablo Canyon Power Plant Notification of Unusual Event2011-03-14014 March 2011 PNO-IV-11-011A; Update Diablo Canyon Power Plant Notification of Unusual Event PNO-IV-11-001, Pacific Gas and Electric Company, Diablo Canyon Nuclear Plant Units 1 and 2 (03/11/2011)2011-03-11011 March 2011 PNO-IV-11-001: Pacific Gas and Electric Company, Diablo Canyon Nuclear Plant Units 1 and 2 (03/11/2011) PNO-IV-10-002, Diablo Canyon - Alert at Diablo Canyon Power Plant Unit 12010-06-23023 June 2010 PNO-IV-10-002 Diablo Canyon - Alert at Diablo Canyon Power Plant Unit 1 ML0825209702008-09-0808 September 2008 PNO-IV-2008-007A, Pacific Gas and Electric Company, Diablo Canyon Power Plant, Notice of Unusual Event at Diablo Canyon, Unit 2 - Update PNO-IV-08-007, Notice of Unusual Event at Diablo Canyon, Unit 22008-08-18018 August 2008 PNO-IV-08-007: Notice of Unusual Event at Diablo Canyon, Unit 2 PNO-IV-06-016, A Pacific Gas & Electric Co. (Diablo Canyon Power Plant) Update - Unusual Event at Diablo Canyon Power Plant, 12/14/062006-12-14014 December 2006 PNO-IV-06-016A Pacific Gas & Electric Co. (Diablo Canyon Power Plant) Update - Unusual Event at Diablo Canyon Power Plant, 12/14/06 ML0634605752006-12-12012 December 2006 PNO-IV-06-016, Pacific Gas & Electric Company (Diablo Canyon Power Plant Unit 2), Unusual Event at Diablo Canyon Power Plant, 12/12/2006 PNO-IV-04-026, A: Diablo Canyon Power Plant Units 1 and 2, Response to California Earthquake - Update2004-09-29029 September 2004 PNO-IV-04-026A: Diablo Canyon Power Plant Units 1 and 2, Response to California Earthquake - Update PNO-IV-04-013, Diablo Canyon Power Plant, Units 1 and 2: Fire in Protected Area Generated Media Interest2004-06-24024 June 2004 PNO-IV-04-013 Diablo Canyon Power Plant, Units 1 and 2: Fire in Protected Area Generated Media Interest PNO-IV-04-010, Pacific Gas and Electric Co, Earthquake Near Diablo Canyon Power Plant2004-03-18018 March 2004 PNO-IV-04-010: Pacific Gas and Electric Co, Earthquake Near Diablo Canyon Power Plant PNO-IV-03-054, Response to California Earthquake2003-12-23023 December 2003 PNO-IV-03-054: Response to California Earthquake PNO-IV-03-044, Pacific Gas and Electric Company, Earthquake Detected at Diablo Canyon2003-10-20020 October 2003 PNO-IV-03-044: Pacific Gas and Electric Company, Earthquake Detected at Diablo Canyon PNO-IV-03-021, Diablo Canyon Unit 2, Plant Shutdown to Exceed 72 Hours2003-04-0808 April 2003 PNO-IV-03-021: Diablo Canyon Unit 2, Plant Shutdown to Exceed 72 Hours 2011-03-14
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September 8, 2008 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE - PNO-IV-2008-007A This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region IV, Arlington, Texas, staff on this date.
Facility Pacific Gas and Electric Company Diablo Canyon Power Plant P.O. Box 3 Avila Beach, CA 93424 Docket: 50-323 License No.: DPR-82 Licensee Emergency Classification X Notification of Unusual Event Alert Site Area Emergency General Emergency Not Applicable
SUBJECT:
NOTICE OF UNUSUAL EVENT AT DIABLO CANYON, UNIT 2 - UPDATE
DESCRIPTION: On September 6, 2008, Diablo Canyon Unit 2 resumed operation after the main transformer was repaired. Pacific Gas and Electric had shutdown Unit 2 and declared a Notification of Unusual Event (NOUE) at Diablo Canyon, following a fire in that unit's main transformer on August 17, 2008. Damage was limited to the main transformer and several windows in adjacent buildings, which were broken as a result of the fire. No safety related equipment was affected by the event. Unit 1 was also unaffected by the fire.
NRC staff inspected licensee corrective actions to repair the Unit 2 main transformer and monitored licensee restart activities.
The State of California has been notified. The information in this preliminary notification update has been discussed with the licensee and is current as of September 8, 2008.
ADAMS ACCESSION NUMBER : ML082520970 CONTACTS: Vincent Gaddy, (817) 860-8141, Vincent.Gaddy@NRC.GOV Michael Peck, (805) 595-2354, Michael.Peck@NRC.GOV