ML16152A924
| ML16152A924 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Mcguire, Catawba, McGuire  |
| Issue date: | 03/01/1990 |
| From: | Matthews D Office of Nuclear Reactor Regulation |
| To: | Tucker H DUKE POWER CO. |
| References | |
| TAC-75005, TAC-75884, TAC-75886, TAC-75887, TAC-75888, TAC-75889, TAC-75890, NUDOCS 9003140320 | |
| Download: ML16152A924 (3) | |
Text
March 1, 1990 Docket Nos. 50-269, 50-270, 50-287 50-369, 50-370 50-413, 50-414 Mr. H. B. Tucker, Vice President Nuclear Production Department Duke Power Company 422 South Church Street Charlotte, North Carolina 28242
Dear Mr. Tucker:
SUBJECT:
REQUEST FOR PROPOSED ALTERNATIVE TO ASME SECTION III FOR TUBE PLUG MATERIAL - OCONEE, MCGUIRE AND CATAWBA NUCLEAR STATIONS (TACs 75884-6, 75887-8 and 75889-90)
By letter of January 24, 1990, you requested NRC approval to use steam generator tube plugs manufactured by Babcock & Wilcox with an alternate material.
The alternate material is a nickel base alloy, ASME designation SB-166 (Alloy 690).
The NRC staff has reviewed your request and supporting information. We conclude that the use of Alloy 600 in accordance with the requirements of the ASME Boiler and Pressure Vessel Code would result in a hardship since any Alloy 600 plugs installed during currently scheduled outages would require these plugs to be added to future plug inspection programs, resulting in increased resource expenditure and personnel radiation exposure.
There would be no compensating increase in the level of safety by continuing to require the use of Alloy 600 plugs, as the staff has concluded that Alloy 690 will provide an enhanced protection against pressurized water stress corrosion cracking.
Therefore, the use of Alloy 690 may be authorized under the provisions of 10 CFR 50.55a(a)(3).
Your request is, therefore, granted.
Sincerely,
/s/
David B. Matthews, Director Project Directorate 11-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION Docket File KJabbour NRC & LPDRs LWiens PD23 Rdg File DLaBerge SVarga DMatthews GLainas EJordan RIngram ARCS DHood OGC(for info only)
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Mr. H. B. Tucker Catawba Nuclear Station Duke Power Company McGuire Nuclear Station Oconee Nuclear Station cc:
A.V. Carr, Esq.
North Carolina Electric Membership Duke Power Company Corp.
422 South Church Street 3400 Sumner Boulevard Charlotte, North Carolina 28242 P.O. Box 27306 Raleigh, North Carolina 27611 J. Michael McGarry, III, Esq.
Bishop, Cook, Purcell and Reynolds Saluda River Electric Cooperative, 1400 L Street, N.W.
Inc.
Washington, D. C. 20005 P.O. Box 929 Laurens, South Carolina 29360 North Carolina MPA-1 Senior Resident Inspector Suite 600 Route 2, Box 179N 3100 Smoketree Ct.
York, South Carolina 29745 P.O. Box 29513 Raleigh, North Carolina 27626-0513 Regional Administrator, Region II U.S. Nuclear Regulatory Cummission Ms. S. S. Kilborn 101 Marietta Street, NW, Suite 2900 Area Manager, Mid-South Area Atlanta, Georgia 30323 ESSD Projects Westinghouse Electric Corp.
Mr. Heyward G. Shealy, Chief MNC West Tower - Bay 239 Bureau of Radiological Health P.O. Box 355 South Carolina Department of Health Pittsburgh, Pennsylvania 15230 and Environmental Control 2600 Bull Street County Manager of York County Columbia, South Carolina 29201 York County Courthouse York, South Carolina 29745 Ms. Karen E. Long Assistant Attorney General Richard P. Wilson, Esq.
N.C. Department of Justice Assistant Attorney General P.O. Box 629 S.C. Attorney General's Office Raleigh, North Carolina 27602 P.O. Box 11549 Columbia, South Carolina 29211 Mr. Robert G. Morgan Nuclear Production Department Piedmont Municipal Power Agency Duke Power Company 100 Memorial Drive P.O. Box 33189 Greer, South Carolina 29651 Charlotte, North Carolina 28241 Mr. Alan R. Herdt, Chief Project Branch #3 U.S. Nuclear Regulatory Commission 101 Marietta Street, NW, Suite 2900 Atlantd, Georgia 30323
Mr. H. B. Tucker
- 2 Duke Power Company cc:
Dr. John M. Barry Manager, LIS Department of Environmental Health NUS Corporation Mecklenburg County 2536 Countryside Boulevard 1200 Blythe Boulevard Clearwater, Florida 34623-1693 Charlotte, North Carolina 28203 Office of Intergovernmental Relations County Manager of Mecklenburg County 116 West Jones Street 720 East Fourth Street Raleigh, North Carolina 27603 Charlotte, North Carolina 28202 Honorable James M. Phinney Mr. J. S. Warren County Supervisor of Oconee County Duke Power Company Walhalla, South Carolina 29621 Nuclear Production Department P. 0. Box 33189 Mr. Paul Guill Charlotte, North Carolina 28242 Duke Power Company P.O. Box 33189 Senior Resident Inspector 422 South Church Street c/o U.S. Nuclear Regulatory Commission Charlotte, North Carolina 28242 Route 4, Box 529 Hunterville, North Carolina 28078 Senior Resident Inspector U.S. Nuclear Regulatory Commission Route 2, Box 610 Seneca, South Carolina 29678 Mr. Dayne H. Brown, Director Department of Enviornmental, Health and Natural Resources Division of Radiation Protection P.O. Box 27687 Raleigh, North Carolina.27611-7687 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Division Suite 525 1700 Rockville Pike Rockville, Maryland 20852