ML030020017
| ML030020017 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 01/02/2003 |
| From: | Olshan L NRC/NRR/DLPM/LPD2 |
| To: | Rosalyn Jones Duke Energy Corp |
| Olshan L N, NRR/DLPM, 415-1419 | |
| References | |
| Download: ML030020017 (6) | |
Text
January 2, 2003 LICENSEE:
DUKE ENERGY COMPANY FACILITY:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3
SUBJECT:
SUMMARY
OF DECEMBER 10, 2002, MEETING TO DISCUSS TORNADO MITIGATION On December 10, 2002, the Nuclear Regulatory Commission (NRC) met with Duke Energy (the licensee) to discuss the licensees June 7, 2002, submittal on tornado mitigation. Enclosure 1 is a list of the attendees. Enclosure 2 is an NRC memorandum dated November 7, 1983, Position on Use of Probabilistic Risk Assessment in Tornado Missile Protection Licensing Actions, that was provided to the licensee during the meeting. The June 7, 2002, submittal and the handouts provided by the licensee are accessible electronically from the Agencywide Documents Access and Management System (ADAMS) Public Electronic Reading Room on the internet at the NRC Web site, http://www.nrc.gov/reading-rm/adams/html. The accession number for the June 7, 2002, submittal is ML021710770, and the accession number for the handouts provided by the licensee is ML023450585.
Prior to the meeting, the NRC had sent questions to the licensee regarding the licensees probabistic risk assessment. The licensees handout entitled, Duke Responses to NRC Questions on the Oconee Nuclear Station Tornado Licensing Amendment Request, December 10, 2002, contained each question and a brief response in bullet format that was used for discussion during the meeting. The licensee committed to provide on the docket an expanded response to those questions that the NRC identifies.
The licensees basic approach to tornado mitigation is to modify the Standby Shutdown Facility (SSF) so that it can withstand the effects of a tornado and then use the SSF as the assured means of achieving safe shutdown. The NRC noted that the SSF is not single-failure proof and questioned whether this meets NRC requirements. The licensee stated that, for the Oconee facility, there is no requirement that the systems used to mitigate the effects of a tornado be single-failure proof. The NRC stated that it will relook at the requirements for Oconee tornado mitigation. The NRC also stated that it is still reviewing the deterministic evaluation contained in the licensees June 7, 2002, submittal and the NRC may have additional questions on this evaluation.
Enclosures:
As stated cc w/encls: See next page
LIST OF ATTENDEES MEETING TO DISCUSS TORNADO MITIGATION DECEMBER 10, 2002 NRC DUKE C. Doutt D. Brewer L. Olshan E. Burchfield J. Ortega-Luciano W. Foster W. Rogers*
R. Gambrell R. Schin*
L. Kanipe J. Tatum L. Nicholson
- Participated by telephone
January 2, 2003 LICENSEE:
DUKE ENERGY COMPANY FACILITY:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3
SUBJECT:
SUMMARY
OF DECEMBER 10, 2002, MEETING TO DISCUSS TORNADO MITIGATION On December 10, 2002, the Nuclear Regulatory Commission (NRC) met with Duke Energy (the licensee) to discuss the licensees June 7, 2002, submittal on tornado mitigation. Enclosure 1 is a list of the attendees. Enclosure 2 is an NRC memorandum dated November 7, 1983, Position on Use of Probabilistic Risk Assessment in Tornado Missile Protection Licensing Actions, that was provided to the licensee during the meeting. The June 7, 2002, submittal and the handouts provided by the licensee are accessible electronically from the Agencywide Documents Access and Management System (ADAMS) Public Electronic Reading Room on the internet at the NRC Web site, http://www.nrc.gov/reading-rm/adams/html. The accession number for the June 7, 2002, submittal is ML021710770, and the accession number for the handouts provided by the licensee is ML023450585.
Prior to the meeting, the NRC had sent questions to the licensee regarding the licensees probabistic risk assessment. The licensees handout entitled, Duke Responses to NRC Questions on the Oconee Nuclear Station Tornado Licensing Amendment Request, December 10, 2002, contained each question and a brief response in bullet format that was used for discussion during the meeting. The licensee committed to provide on the docket an expanded response to those questions that the NRC identifies.
The licensees basic approach to tornado mitigation is to modify the Standby Shutdown Facility (SSF) so that it can withstand the effects of a tornado and then use the SSF as the assured means of achieving safe shutdown. The NRC noted that the SSF is not single-failure proof and questioned whether this meets NRC requirements. The licensee stated that, for the Oconee facility, there is no requirement that the systems used to mitigate the effects of a tornado be single-failure proof. The NRC stated that it will relook at the requirements for Oconee tornado mitigation. The NRC also stated that it is still reviewing the deterministic evaluation contained in the licensees June 7, 2002, submittal and the NRC may have additional questions on this evaluation.
Enclosures:
As stated cc w/encls: See next page Distribution: See next page ADAMS ACCESSION NO.: ML030020017 OFFICE PDII-1/PM PDII-1/LA PDII-1/SC NAME LOlshan CHawes JNakoski DATE 12/23/02 12/23/02 12/31/02 OFFICIAL RECORD COPY
DISTRIBUTION FOR MEETING
SUMMARY
OF DECEMBER 10, 2002, MEETING TO DISCUSS TORNADO MITIGATION Distribution:
PUBLIC PDII-1 R/F LOlshan OGC ACRS/ACNW JZwolinski/LMarsh HBerkow JNakoski CHawes MKotzalas SRosenberg RHaag, RII CDoutt JOrtega-Luciano WRogers RSchin JTatum
Oconee Nuclear Station cc:
Ms. Lisa F. Vaughn Legal Department (ECIIX)
Duke Energy Corporation 422 South Church Street Charlotte, North Carolina 28201-1006 Anne W. Cottingham, Esquire Winston and Strawn 1400 L Street, NW Washington, DC 20005 Manager, LIS NUS Corporation 2650 McCormick Drive, 3rd Floor Clearwater, Florida 34619-1035 Senior Resident Inspector U. S. Nuclear Regulatory Commission 7812B Rochester Highway Seneca, South Carolina 29672 Mr. Henry Porter, Director Division of Radioactive Waste Management Bureau of Land and Waste Management Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201-1708 Mr. Michael A. Schoppman Framatome ANP 1911 North Ft. Myer Drive Suite 705 Rosslyn, VA 22209 Mr. L. E. Nicholson Compliance Manager Duke Energy Corporation Oconee Nuclear Site 7800 Rochester Highway Seneca, South Carolina 29672 Ms. Karen E. Long Assistant Attorney General North Carolina Department of Justice P. O. Box 629 Raleigh, North Carolina 27602 Mr. C. Jeffrey Thomas Manager - Nuclear Regulatory Licensing Duke Energy Corporation 526 South Church Street Charlotte, North Carolina 28201-1006 Mr. Richard M. Fry, Director Division of Radiation Protection North Carolina Department of Environment, Health, and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 Mr. Peter R. Harden, IV VP-Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, North Carolina 28210