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As stated cc w/encl: See next page | 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 | 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. | ||
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. | 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 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. | ||
Latest revision as of 02:58, 15 March 2020
| 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 Ms. Karen E. Long Duke Energy Corporation Assistant Attorney General Mail Code - PB06E North Carolina Department of Justice 422 South Church Street P.O. Box 629 P.O. Box 1244 Raleigh, North Carolina 27602 Charlotte, North Carolina 28201-1244 Mr. R. L. Gill, Jr.
County Manager of Mecklenburg County Manager - Nuclear Regulatory Issues 720 East Fourth Street and Industry Affairs Charlotte, North Carolina 28202 Duke Energy Corporation 526 South Church Street Mr. C. Jeffrey Thomas Mail Stop EC05P Regulatory Compliance Manager Charlotte, North Carolina 28202 Duke Energy Corporation McGuire Nuclear Site NCEM REP Program Manager 12700 Hagers Ferry Road 4713 Mail Service Center Huntersville, North Carolina 28078 Raleigh, North Carolina 27699-4713 Anne Cottingham, Esquire Mr. Richard M. Fry, Director Winston and Strawn Division of Radiation Protection 1400 L Street, NW North Carolina Department of Washington, D.C. 20005 Environment, Health and Natural Resources Senior Resident Inspector 3825 Barrett Drive c/o U.S. Nuclear Regulatory Commission Raleigh, North Carolina 27609-7721 12700 Hagers Ferry Road Huntersville, North Carolina 28078 Mr. T. Richard Puryear Owners Group (NCEMC)
Dr. John M. Barry Duke Energy Corporation Mecklenburg County 4800 Concord Road Department of Environmental York, South Carolina 29745 Protection 700 N. Tryon Street Henry Barron Charlotte, North Carolina 28202 Group Vice President, Nuclear Generation and Chief Nuclear Officer Mr. Peter R. Harden, IV P.O. Box 1006-EC07H VP-Customer Relations and Sales Charlotte, NC 28201-1006 Westinghouse Electric Company 6000 Fairview Road, 12th Floor Charlotte, North Carolina 28210