ML031290131

4/30/2003, Oconee, Meeting Summary, to Discuss non-seismic Piping in the Auxiliary Building

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

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 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 Attachment

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