ML060650068
| ML060650068 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 03/14/2006 |
| From: | Jaffe D Plant Licensing Branch III-2 |
| To: | Christian D Dominion |
| jaffe D, NRR/DORL, 415-1439 | |
| Shared Package | |
| ML060650069 | List: |
| References | |
| Download: ML060650068 (3) | |
Text
March 14, 2006 Mr. David A. Christian Senior Vice President and Chief Nuclear Officer Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711
SUBJECT:
FERMI 2 - TRANSMITTAL OF FINAL ACCIDENT SEQUENCE PRECURSOR ANALYSES CONCERNING THE AUGUST 14, 2003 TRANSMISSION GRID BLACKOUT
Dear Mr. Cobb:
The enclosure provides the final results of the Accident Sequence Precursor (ASP) analyses of an event which occurred at Fermi 2 as documented in Licensee Event Report 341/03-002. The subject event occurred on August 14, 2003 during which Fermi 2 experienced grid instability and a subsequent reactor trip while operating at 100 percent power. Loss of offsite power occurred at 1611 hours0.0186 days <br />0.448 hours <br />0.00266 weeks <br />6.129855e-4 months <br />. Plant emergency diesel generators started and supplied power to safety-related plant loads until offsite power was restored. The ASP analysis calculated a conditional core damage probability of 2x10-5.
The enclosure is provided for your information and no response is requested.
Sincerely,
/RA/
David H. Jaffe, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-341
Enclosure:
Final ASP Analysis cc w/encl: See next page
March 14, 2006 Mr. David A. Christian Senior Vice President and Chief Nuclear Officer Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711
SUBJECT:
FERMI 2 - TRANSMITTAL OF FINAL ACCIDENT SEQUENCE PRECURSOR ANALYSES CONCERNING THE AUGUST 14, 2003 TRANSMISSION GRID BLACKOUT
Dear Mr. Cobb:
The enclosure provides the final results of the Accident Sequence Precursor (ASP) analyses of an event which occurred at Fermi 2 as documented in Licensee Event Report 341/03-002. The subject event occurred on August 14, 2003 during which Fermi 2 experienced grid instability and a subsequent reactor trip while operating at 100 percent power. Loss of offsite power occurred at 1611 hours0.0186 days <br />0.448 hours <br />0.00266 weeks <br />6.129855e-4 months <br />. Plant emergency diesel generators started and supplied power to safety-related plant loads until offsite power was restored. The ASP analysis calculated a conditional core damage probability of 2x10-5.
The enclosure is provided for your information and no response is requested.
Sincerely,
/RA/
David H. Jaffe, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-341
Enclosure:
Final ASP Analysis cc w/encl: See next page DISTRIBUTION:
PUBLIC LPLIII-1 R/F RidsNrrPMDJaffe RidsNrrLADClarke RidsOgcRp RidsAcrsAcnwMailCenter RidsRgn3MailCenter RidsNrrDorlLple Package Accession Number: ML060650069 Letter Accession Number: ML060650068 Enclosure Accession Number: ML060720146 OFFICE NRR/LPL3-1/PM NRR/LPL3-1/LA NRR/LPL3-1/BC NAME DJaffe DClarke LRaghavan DATE 3/14/06 3/14/06 3/14/06 OFFICIAL RECORD COPY
Fermi 2 cc:
David G. Pettinari Legal Department 688 WCB Detroit Edison Company 2000 2nd Avenue Detroit, MI 48226-1279 Michigan Department of Environmental Quality Waste and Hazardous Materials Division Radiological Protection and Medical Waste Section Nuclear Facilities Unit Constitution Hall, Lower-Level North 525 West Allegan Street P.O. Box 30241 Lansing, MI 48909-7741 U.S. Nuclear Regulatory Commission Resident Inspector's Office 6400 N Dixie Highway Newport, MI 48166 Mr. M. V. Yudasz, Jr., Director Monroe County Emergency Management Division 965 South Raisinville Road Monroe, MI 48161 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville Road Lisle, IL 60532-4351 Ronald W. Gaston Manager, Nuclear Licensing Detroit Edison Company Fermi 2 - 200 TAC 6400 North Dixie Highway Newport, MI 48166 Supervisor - Electric Operators Michigan Public Service Commission 6545 Merchantile Way P.O. Box 30221 Lansing, MI 48909 Wayne County Emergency Management Division 10250 Middlebelt Road Detroit, MI 48242