ML032020085
| ML032020085 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 07/21/2003 |
| 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: ML032020085 (5) | |
Text
July 21, 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 RE: FURTHER REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MB7842 AND MB7843)
By letter dated June 9, 2003, you provided additional information concerning your February 25, 2003, amendment request that proposed to change the requirements for inspection of the steam generators. Your June 9, 2003, letter responded to our letters dated April 30, and May 29, 2003.
We have reviewed your June 9, 2003, letter and with two exceptions, find it acceptable to complete our review. The first exception involves the reporting requirements in Section 5.6.8 of your proposal. It is our understanding that you plan to modify your submittal to indicate that a report would be submitted that is not dependent on the percentage of tubes satisfying the performance criteria. We find that acceptable.
The second exception is the wording for the structural integrity performance criterion, specifically related to an appropriate safety factor for bending loads. As discussed in meetings, phone calls and the recent NRC Commission meeting, which was held May 29, 2003, the NRC staff has not yet accepted the 1.2 value that you have proposed for the safety factor associated with the structural performance criterion for bending loads. Based on our review of the American Society of Mechanical Engineer Codes philosophy for determining safety factor, as well as past precedent for piping, it is not evident that 1.2 is the correct safety factor or whether some other factor is more appropriate (e.g. 1.4). The Nuclear Energy Institute (NEI) committed at the Commission meeting to provide to the Commission an analysis of the impact of using 1.2 or 1.4 in steam generator tube integrity assessments. This assessment would enable us to evaluate the safety significance of using a safety factor of 1.2 for bending loads for Catawba, as well as for the rest of the industry for which Catawba is a pilot plant for this technical specification change. At the Commission meeting, NEI stated that this analysis was to be completed in a couple of weeks.
Subsequent to that meeting, we tentatively scheduled a public meeting with you to work to resolution of the safety factor issue; the meeting was to be held on July 15, 2003. The draft agenda for this meeting specified that the meeting was being held to understand the impact of using 1.2 or 1.4, and also understand the technical justification of using 1.2 as a safety factor.
This meeting was canceled at industrys request because the impact analysis was not going to be completed by that date. We were advised that this analysis would not be completed until the end of August, at the earliest.
At this juncture, we are unable to complete our review of your submittal until we have an opportunity to evaluate the industrys impact analysis of the difference in safety factors of 1.2 and 1.4. It is our hope that this work be completed expeditiously so that we can bring to a close
Mr. Dhiaa Jamil the effort on NEI 97-06, Steam Generator Program Guidelines. It should be noted that we would be receptive to an approach that demonstrates for each type of plant that the bending loads are small and, therefore, do not play a meaningful role in determining structural integrity of the steam generator tubes.
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 cc: See next page
ML032020085 OFFICE PM:PDII-1 LA:PDII-1 SC:PDII-1 NAME LOlshan CHawes JNakoski DATE 7/18/2003 7/18/2003 7/18/2003
Catawba Nuclear Station cc:
Mr. Gary Gilbert Regulatory Compliance Manager Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 Ms. Lisa F. Vaughn Legal Department (ECIIX)
Duke Energy Corporation 422 South Church Street Charlotte, North Carolina 28201-1006 Anne Cottingham, Esquire Winston and Strawn 1400 L Street, NW Washington, DC 20005 North Carolina Municipal Power Agency Number 1 1427 Meadowwood Boulevard P. O. Box 29513 Raleigh, North Carolina 27626 County Manager of York County York County Courthouse York, South Carolina 29745 Piedmont Municipal Power Agency 121 Village Drive Greer, South Carolina 29651 Ms. Karen E. Long Assistant Attorney General North Carolina Department of Justice P. O. Box 629 Raleigh, North Carolina 27602 NCEM REP Program Manager 4713 Mail Service Center Raleigh, NC 27699-4713 North Carolina Electric Membership Corporation P. O. Box 27306 Raleigh, North Carolina 27611 Senior Resident Inspector U.S. Nuclear Regulatory Commission 4830 Concord Road York, South Carolina 29745 Henry Porter, Assistant Director Division of Waste Management Bureau of Land and Waste Management Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201-1708 Mr. C. Jeffrey Thomas Manager - Nuclear Regulatory Licensing Duke Energy Corporation 526 South Church Street Charlotte, North Carolina 28201-1006 Saluda River Electric P. O. Box 929 Laurens, South Carolina 29360 Mr. Peter R. Harden, IV VP-Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, North Carolina 28210
Mr. Dhiaa Jamil Catawba Nuclear Station cc:
Mr. T. Richard Puryear Owners Group (NCEMC)
Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 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 D. M. Jamil Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, South Carolina 29745-9635