ML032600990

Request for Additonal Information Resulting from Licensee Letter Dated July 30, 2003

ML032600990
Person / Time
Site:	Catawba
Issue date:	09/17/2003
From:	Olshan L NRC/NRR/DLPM/LPD2
To:	Jamil D Duke Energy Corp
Olshan L N, NRR/DLPM, 415-1419
References
TAC MB7842, TAC MB7843
Download: ML032600990 (4)

Text

September 17, 2003 Mr. D. M. Jamil Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, South Carolina 29745

SUBJECT:

CATAWBA NUCLEAR STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RESULTING FROM LICENSEE LETTER DATED JULY 30, 2003 (TAC NOS. MB7842 AND MB7843)

By letter dated July 30, 2003, you responded to our letter dated July 21, 2003, regarding the appropriate safety factor for bending loads. Enclosed is a request for additional information (RAI) based on our review of your July 30, 2003, letter. Larry Rudy of your staff has informed me that your response to this RAI should be provided by October 15, 2003. Please contact me at (301) 415-1419, if you have any further questions on this matter.

Sincerely,

/RA/

Leonard N. Olshan, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414

Enclosure:

As stated cc w/encl: See next page

ML032600990 OFFICE PDII-1/PM PDII-1/LA PDII-1/SC NAME LOlshan CHawes JNakoski DATE 9/11/2003 9/11/2003 9/16/2003 REQUEST FOR ADDITIONAL INFORMATION CATAWBA UNITS 1 AND 2 TECHNICAL SPECIFICATION AMENDMENT - STEAM GENERATORS The licensees letter dated July 30, 2003, proposed, in part, the following technical specification wording related to the structural integrity performance criteria:

".... Apart from the above requirements, additional loading conditions associated with the design basis accidents, or combination of accidents in accordance with the design and licensing basis, shall also be evaluated to determine if the associated loads contribute significantly to burst. In the assessment of tube integrity, those loads that significantly affect burst shall be determined and assessed in combination with the loads due to primary to secondary pressure differential using safety factors that are consistent with the licensing basis design criteria."

Following are questions related to this wording:

1. For design basis accident loadings, please discuss whether any loads other than differential pressure loads (i.e., primary membrane (other than from pressure), primary bending, differential thermal) contribute significantly to burst. In addition, please provide a summary of the methodology used to determine whether loads other than differential pressure contribute significantly to burst.

2. For those loads that significantly contribute to burst, if any, please discuss how they were assessed in combination with the loads due to primary to secondary pressure differential.

3. In the event of off-normal conditions, it is possible that loads once determined to be non-contributing will subsequently be determined to be contributing loads. As a result, please provide the safety factors that are consistent with the licensing basis design criteria for loads other than differential pressure. In addition, discuss how these loads (and safety factors) will be combined with the loads due to primary to secondary differential pressure. Include in this discussion, the technical basis for these safety factors and clarify what constitutes the licensing basis design criteria for the steam generator tubes.

Enclosure

Catawba Nuclear Station cc:

Senior Resident Inspector Mr. Gary Gilbert U.S. Nuclear Regulatory Commission Regulatory Compliance Manager 4830 Concord Road Duke Energy Corporation York, South Carolina 29745 4800 Concord Road York, South Carolina 29745 Henry Porter, Assistant Director Division of Waste Management Ms. Lisa F. Vaughn Bureau of Land and Waste Management Legal Department (ECIIX) Department of Health and Environmental Duke Energy Corporation Control 422 South Church Street 2600 Bull Street Charlotte, North Carolina 28201-1006 Columbia, South Carolina 29201-1708 Anne Cottingham, Esquire Mr. C. Jeffrey Thomas Winston and Strawn Manager - Nuclear Regulatory 1400 L Street, NW Licensing Washington, DC 20005 Duke Energy Corporation 526 South Church Street North Carolina Municipal Power Charlotte, North Carolina 28201-1006 Agency Number 1 1427 Meadowwood Boulevard Saluda River Electric P. O. Box 29513 P. O. Box 929 Raleigh, North Carolina 27626 Laurens, South Carolina 29360 County Manager of York County Mr. Peter R. Harden, IV York County Courthouse VP-Customer Relations and Sales York, South Carolina 29745 Westinghouse Electric Company 6000 Fairview Road Piedmont Municipal Power Agency 12th Floor 121 Village Drive Charlotte, North Carolina 28210 Greer, South Carolina 29651 Mr. T. Richard Puryear Ms. Karen E. Long Owners Group (NCEMC)

Assistant Attorney General Duke Energy Corporation North Carolina Department of Justice 4800 Concord Road P. O. Box 629 York, South Carolina 29745 Raleigh, North Carolina 27602 Richard M. Fry, Director NCEM REP Program Manager Division of Radiation Protection 4713 Mail Service Center North Carolina Department of Raleigh, NC 27699-4713 Environment, Health, and Natural Resources North Carolina Electric Membership 3825 Barrett Drive Corporation Raleigh, North Carolina 27609-7721 P. O. Box 27306 Raleigh, North Carolina 27611