ML031290131
| ML031290131 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/09/2003 |
| From: | Olshan L NRC/NRR/DLPM/LPD2 |
| To: | Office of Nuclear Reactor Regulation |
| Olshan L N, NRR/DLPM, 415-1419 | |
| References | |
| TAC MB6651, TAC MB6652, TAC MB6653 | |
| Download: ML031290131 (4) | |
Text
May 9, 2003 LICENSEE:
DUKE ENERGY COMPANY FACILITY:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3
SUBJECT:
SUMMARY
OF APRIL 30, 2003, MEETING TO DISCUSS NON-SEISMIC PIPING IN THE AUXILIARY BUILDING (TAC NOS. MB6651, MB6652, AND MB6653)
On April 30, 2003, the Nuclear Regulation Commission (NRC) met with Duke Energy Company (the licensee) to discuss the licensees November 1, 2002, submittal on non-seismic piping in the auxiliary building and the associated requests for additional information (RAIs). A list of the attendees is enclosed. The November 1, 2002, submittal; the NRCs RAIs; and the handouts provided by the licensee are accessible electronically from the Agencywide Documents Access and Management System (ADAMS) Public Electronic Reading on the internet at the NRC Web site, http://www.nrc.gov/reading-rm/adams/html. The accession number for the November 1, 2002, submittal is ML023180409; the accession numbers for the RAIs are ML030440183 and ML030720040; and the accession number for the licensees handouts is ML031220331.
The licensees November 1, 2002, submittal proposes that, in the event of the maximum hypothetical earthquake, failure of the non-seismic piping in the auxiliary building would not adversely impact safety-related equipment that is required for safe shutdown. The licensees proposal is based on a risk-informed justification. To support this justification, the licensee developed a fragility value for the Oconee piping based on the experience of fire protection piping during the Loma Prieta earthquake.
Following are the major concerns raised by the NRC during the meeting:
- 1. Since the licensee used the entire seismic probabilistic risk analysis in its risk-informed justification, the NRC review will require a greater effort than what was originally anticipated.
- 2. The licensee has not adequately demonstrated that the piping that experienced the Loma Prieta earthquake is similar to the Oconee piping, especially in the areas of support spacing and type of support.
- 3. The horizontal spectrum accelerations of the Loma Prieta earthquake do not envelope the Oconee uniform hazard earthquake spectrum accelerations at frequencies other than 7 Hertz. The vertical spectrum accelerations from the Loma Prieta earthquake are significantly lower than the Oconee uniform hazard earthquake spectrum accelerations at frequencies greater than 3 Hertz.
The licensee and the NRC will continue efforts to resolve these concerns.
/RA/
Leonard N. Olshan, Senior Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270 and 50-287
Attachment:
List of Attendees cc w/encl: See next page
ML031290131 OFFICE PM:PDII-1 LA:PDII-1 SC:PDII-1 NAME LOlshan CHawes JNakoski DATE 5/8/2003 5/8/2003 5/8/2003
Attachment LIST OF ATTENDEES MEETING TO DISCUSS NON-SEISMIC PIPING IN OCONEE AUXILIARY BUILDING APRIL 30, 2003 NRC DUKE ENERGY S. Dinsmore D. Brewer J. Fair T. Brown B. Lefave E. Burchfield J. Nakoski R. Gambrell L. Olshan G. McAninch M. Rubin S. Nader L. Nicholson J. Richards J. Robertson B. Shingleton
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