ML20214N202
| ML20214N202 | |
| Person / Time | |
|---|---|
| Site: | McGuire  |
| Issue date: | 09/10/1986 |
| From: | Youngblood B Office of Nuclear Reactor Regulation |
| To: | Tucker H DUKE POWER CO. |
| References | |
| NUDOCS 8609160157 | |
| Download: ML20214N202 (2) | |
Text
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Docket No.: 50-369 and 50-370 10 SEP 1985 Mr. H. B. Tucker, Vice President Nuclear Production Department Duke Power Company 422 South Church Street Charlotte, North Carolina 28242
SUBJECT:
McGUIRE UNIT 1/ CYCLE 4 PEAKING FACTOR LIMIT REPORT CORRECTION
Dear Mr. Tucker:
Your letter of September 9,1986, notes that a certain portion of the curves for the W(Z) functions in the McGuire Unit 1/ Cycle 4 Peaking Factor Limit Report, as discussed in your letter of August 12, 1986, has been re-examined by Westinghouse and found to require a small increase near the top of the core.
You state that Duke Power Company has administratively implemented the revised curves pending NRC review, and request NRC approval of the revised curves pursuant to Technical Specification 6.9.1.9.
The NRC staff has reviewed the changes in the W(Z) functions and has discussed these changes with Westinghouse and Duke Power Company during a telephone con-ference call on September 10, 1986. We find that the changes are limited to the upper portions of the core (i.e., core height of 8 feet or more) and are small in magnitude (i.e., the maximum change in W(Z), which occurs at a core height of about 10 feet, is only 3 percent). These changes do not affect the station safety analysis or our conclusions in McGuire Unit 1 Amendment 60 and McGuire Unit 2 Anendment 41 as issued August 22, 1986. Accordingly, we find the W(Z) curves, as revised September 9,1986, acceptable.
In view of our prior review of the initial curves and the minor nature of the change, the requirenent in Technical Specification 6.9.1.9 which would provide a 60 day l
period of review by the NRC prior to cycle initial criticality need not apply and is waived for this case.
Sincerely, B.J. Youngblood, Director i
PWR Project Directorate #4 i
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Mr. H. B. Tucker Duke Power Company McGuire Nuclear Station cc:
Mr. A. Carr Dr. John M. Barry Duke Power Company Department of Environmental Health P. O. Box 33189 Mecklenburg County 422 South Church Street 1200 Blythe Beulevard Charlotte, North Carolina 28242 Charlotte, North Carolina 28203 Mr. F. J. Twogood County Manager of Mecklenburg County Power Systems Division 720 East Fourth Street Westinghouse Electric Corp.
Charlotte, North Carolina 28202 P. O. Box 355 Pittsburgh, Pennsylvania 15230 Chairman, North Carolina Utilities Comission Mr. Robert Gill Dobbs Building Duke Power Company 430 North Salisbury Street Nuclear Production Department Raleigh, North Carolina 27602 P. O. Box 33189 Charlotte, North Carolina 28242 Mr. Dayne H. Brown, Chief Radiation Protection Branch J. Michael McGarry, III, Esq.
Division of Facility Services Bishop, Liberman, Cook, Purcell Department of Human Resources and Reynolds 701 Barbour Drive 1200 Seventeenth Street, N.W.
Raleigh, North Carolina 27603-2008 Washington, D. C.
20036 Senior Resident Inspector c/o U.S. Nuclear Regulatory Comission Route 4. Box 529 Hunterville, North Carolina 28078 Regional Administrator, Region II U.S. Nuclear Regulatory Comission, 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 L. L. Williams Operating Plants Projects Regional Manager Westinghouse Electric Corporation - R&D 701 P. O. Box 2728 Pittsburgh, Pennsylvania 15230
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