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 Mr. L. E. Nicholson Legal Department (ECIIX) Compliance Manager Duke Energy Corporation Duke Energy Corporation 422 South Church Street Oconee Nuclear Site Charlotte, North Carolina 28201-1006 7800 Rochester Highway Seneca, South Carolina 29672 Anne W. Cottingham, Esquire Winston and Strawn Ms. Karen E. Long 1400 L Street, NW Assistant Attorney General Washington, DC 20005 North Carolina Department of Justice Manager, LIS P. O. Box 629 NUS Corporation Raleigh, North Carolina 27602 2650 McCormick Drive, 3rd Floor Clearwater, Florida 34619-1035 Mr. C. Jeffrey Thomas Manager - Nuclear Regulatory Senior Resident Inspector Licensing U. S. Nuclear Regulatory Duke Energy Corporation Commission 526 South Church Street 7812B Rochester Highway Charlotte, North Carolina 28201-1006 Seneca, South Carolina 29672 Mr. Richard M. Fry, Director Mr. Henry Porter, Director Division of Radiation Protection Division of Radioactive Waste Management North Carolina Department of Bureau of Land and Waste Management Environment, Health, and Department of Health and Environmental Natural Resources Control 3825 Barrett Drive 2600 Bull Street Raleigh, North Carolina 27609-7721 Columbia, South Carolina 29201-1708 Mr. Peter R. Harden, IV Mr. Michael A. Schoppman VP-Customer Relations and Sales Framatome ANP Westinghouse Electric Company 1911 North Ft. Myer Drive 6000 Fairview Road Suite 705 12th Floor Rosslyn, VA 22209 Charlotte, North Carolina 28210