ML060660379

Final Accident Sequence Precursor Analysis Report Regarding Electric Grid Event on August 14, 2003

ML060660379
Person / Time
Site:	Ginna
Issue date:	03/10/2006
From:	Milano P Plant Licensing Branch III-2
To:	Korsnick M Ginna
Milano P, NRR/DLPM ,415-1457
References
Download: ML060660379 (4)

Text

March 10, 2006 Mrs. Mary G. Korsnick Vice President R.E. Ginna Nuclear Power Plant R.E. Ginna Nuclear Power Plant, LLC 1503 Lake Road Ontario, NY 14519

SUBJECT:

R.E. GINNA NUCLEAR POWER PLANT - FINAL ACCIDENT SEQUENCE PRECURSOR ANALYSIS REPORT REGARDING ELECTRIC GRID EVENT ON AUGUST 14, 2003

Dear Mrs. Korsnick:

Enclosed for your use and information is a copy of the Nuclear Regulatory Commission (NRC)

Final Accident Sequence Precursor (ASP) Analysis Report for the R.E. Ginna Nuclear Power Plant regarding the grid disturbance event on August 14, 2003 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML050960036) . This event was described in Licensee Event Report 50-244/03-002, Major Power Grid Disturbance Causes Loss of Electrical Load and Reactor Trip (ADAMS No. ML0328904410). Although offsite power was never completely lost to the buses supplying the power block area, the plant operators determined that the offsite power supply was unreliable and manually started and loaded the emergency diesel generators (EDGs) onto the emergency buses. The EDGs supplied power to safety-related plant loads until offsite power was deemed stable.

If you have any questions about the analysis, please contact me at 301-415-1457 or Christopher Hunter of the NRCs Office of Research at 301-415-4127.

Sincerely,

/RA/

Patrick D. Milano, Senior Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-244

Enclosure:

Final ASP Analysis Report cc w/encl: See next page

ML060660379 OFFICE LPLI-1/PM LPLI-1/LA RES/DRAA/D LPLI-1/BC NAME PMilano SLittle CAder RLaufer DATE 03/09/06 03/09/06 02/17/06 03/10/06 DISTRIBUTION:

PUBLIC LPLI-1 Reading File R. Laufer RidsNrrDorlLplI-1 P. Milano RidsNrrPMPMilano S. Little RidsNrrLASLittle E. Brown RidsNrrDeEeeb C. Ader RidsResDraa C. Hunter B. McDermott, RGN-I RidsRgn1MailCenter OGC RidsOgcRp ACRS RidsAcrsAcnwMailCenter

R.E. Ginna Nuclear Power Plant cc:

Mr. Michael J. Wallace Ms. Thelma Wideman, Director President Wayne County Emergency Management R.E. Ginna Nuclear Power Plant, LLC Office c/o Constellation Energy Wayne County Emergency Operations 750 East Pratt Street Center Baltimore, MD 21202 7336 Route 31 Lyons, NY 14489 Mr. John M. Heffley Senior Vice President and Ms. Mary Louise Meisenzahl Chief Nuclear Officer Administrator, Monroe County Constellation Generation Group Office of Emergency Preparedness 1997 Annapolis Exchange Parkway 1190 Scottsville Road, Suite 200 Suite 500 Rochester, NY 14624 Annapolis, MD 21401 Mr. Paul Eddy Kenneth Kolaczyk, Sr. Resident Inspector New York State Department of R.E. Ginna Nuclear Power Plant Public Service U.S. Nuclear Regulatory Commission 3 Empire State Plaza, 10th Floor 1503 Lake Road Albany, NY 12223 Ontario, NY 14519 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Mr. Peter R. Smith, President New York State Energy, Research, and Development Authority 17 Columbia Circle Albany, NY 12203-6399 Mr. Carey W. Fleming, Esquire Senior Counsel - Nuclear Generation Constellation Generation Group, LLC 750 East Pratt Street, 17th Floor Baltimore, MD 21202 Mr. Charles Donaldson, Esquire Assistant Attorney General New York Department of Law 120 Broadway New York, NY 10271