ML050610218
| ML050610218 | |
| Person / Time | |
|---|---|
| Site: | McGuire  |
| Issue date: | 03/04/2005 |
| From: | James Shea NRC/NRR/DLPM/LPD2 |
| To: | Gordon Peterson Duke Energy Corp |
| SHea J, 415-1388, NRR/DLPM | |
| References | |
| ML041270476, ML041820197, ML042890181, TAC MC4275 ASME BPVC, Section XI, IWA-6230 | |
| Download: ML050610218 (4) | |
Text
March 4, 2005 Mr. G. R. Peterson Vice President McGuire Nuclear Station Duke Energy Corporation 12700 Hagers Ferry Road Huntersville, NC 28078-8985
SUBJECT:
MCGUIRE NUCLEAR STATION, UNIT 1 - REVIEW OF EOC-16 STEAM GENERATOR TUBE INSERVICE INSPECTION
SUMMARY
REPORTS (TAC NO. MC4275)
Dear Mr. Peterson:
By letters dated April 29, 2004 (ML041270476), and June 22, 2004 (ML041820197), as supplemented by letter dated January 12, 2005 (ML042890181), Duke Energy Corporation (Duke), the licensee for McGuire Nuclear Station (McGuire), Unit 1, submitted reports for McGuire, Unit 1 summarizing the steam generator (SG) tube inspections. These reports were submitted in accordance with the plants Technical Specifications (TSs) Sections 5.6.8 parts a and b and as required by the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI, Paragraph IWA-6230, for the SG tube inspections performed during the End of Cycle (EOC) 16 refueling outage (March 2004).
A summary of the Nuclear Regulatory Commission (NRC) staffs evaluation of the EOC 16 refueling outage SG tube inspection results is enclosed. The NRC staff concluded that Duke provided the information required by the McGuire, Unit 1 TSs, and that no additional follow-up is required at this time.
Sincerely,
/RA/
James J. Shea, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-369
Enclosure:
As stated cc w/encl: See next page
ML050610218 NRR-106 OFFICE PDII-1/PM PDII-1/LA EMCB/SC PDII-1/SC NAME JShea CHawes LLund JNakoski DATE 03/02/05 03/02/05 02/10/05 03/04/05
OFFICE OF NUCLEAR REACTOR REGULATION REVIEW OF THE 2004 STEAM GENERATOR TUBE INSPECTION REPORTS MCGUIRE NUCLEAR STATION, UNIT 1 DOCKET NO. 50-369 By letters dated April 29, 2004 (ML041270476), and June 22, 2004 (ML041820197), as supplemented by letter dated January 12, 2005 (ML042890181), Duke Power, the licensee, submitted information pertaining to the 2004 steam generator tube inservice inspections performed at McGuire Nuclear Station (McGuire) Unit 1.
McGuire, Unit 1 has four Babcock and Wilcox International model CFR 80 steam generators containing 6,633 tubes each. The tubing material is thermally treated Alloy 690.
The tubes have an outside diameter of 0.688 inches and a nominal wall thickness of 0.040 inches. The equilateral triangular tube pitch is 0.930 inches. The tubes are hydraulically expanded the entire depth of the tubesheet in both the hot-leg and cold-leg. The tubesheet is 26.63 inches thick without the clad. The tubes are flush welded to the primary face of the tubesheet. The tube support structures are lattice grids made of 410 stainless steel and the U-bend supports are 410 stainless steel.
The licensee provided the scope, extent, methods, and results of its steam generator tube inspections in the documents referenced above. The licensee also described corrective actions (e.g., tube plugging or repair) taken in response to the inspection findings. The inspections appear to be consistent with the objective of detecting potential tube degradation and the results appear to be consistent with industry operating experience at similarly designed and operated units.
Based on a review of the information provided, the NRC staff concludes that the licensee provided the information required by its technical specifications. In addition, the NRC staff concludes that there are no technical issues that warrant follow-up action at this time.
McGuire Nuclear Station cc:
Ms. Lisa F. Vaughn Duke Energy Corporation Mail Code - PB06E 422 South Church Street P.O. Box 1244 Charlotte, North Carolina 28201-1244 County Manager of Mecklenburg County 720 East Fourth Street Charlotte, North Carolina 28202 Mr. C. Jeffrey Thomas Regulatory Compliance Manager Duke Energy Corporation McGuire Nuclear Site 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Anne Cottingham, Esquire Winston and Strawn 1400 L Street, NW Washington, D.C. 20005 Senior Resident Inspector c/o U.S. Nuclear Regulatory Commission 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Dr. John M. Barry Mecklenburg County Department of Environmental Protection 700 N. Tryon Street Charlotte, North Carolina 28202 Mr. Peter R. Harden, IV VP-Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road, 12th Floor Charlotte, North Carolina 28210 Ms. Karen E. Long Assistant Attorney General North Carolina Department of Justice P.O. Box 629 Raleigh, North Carolina 27602 Mr. R. L. Gill, Jr.
Manager - Nuclear Regulatory Issues and Industry Affairs Duke Energy Corporation 526 South Church Street Mail Stop EC05P Charlotte, North Carolina 28202 NCEM REP Program Manager 4713 Mail Service Center Raleigh, North Carolina 27699-4713 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. T. Richard Puryear Owners Group (NCEMC)
Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 Henry Barron Group Vice President, Nuclear Generation and Chief Nuclear Officer P.O. Box 1006-EC07H Charlotte, NC 28201-1006