ML20137N978

Informs That Listed Deficiencies Exist in 850715 Proposed Changes to Tech Specs to Delete Valve NI-122B from Containment Isolation Valves List.Revised Request Should Be Submitted

ML20137N978
Person / Time
Site:	Mcguire, McGuire
Issue date:	11/20/1985
From:	Adensam E Office of Nuclear Reactor Regulation
To:	Tucker H DUKE POWER CO.
References
NUDOCS 8512040275
Download: ML20137N978 (2)

Text

l N= i November 20, 1985 Docket Nos: 50-369 DIST k TION:

and 50-370 p et Nos. 50-369/370 NRC POR Local PDR Mr. H. B. Tucker, Vice President PRC System Nuclear Production Department LB #4 r/f Duke Power Company EAdensam BSheron 422 South Church Street MDuncan Attorney, OELD Charlotte, North Carolina 28242 DHood JPartlow JKudrick, CSB BGrimes

Dear Mr. Tucker:

JPulsipher EJordan

Subject:

Technical Specification Change Request Regarding Containment Isolation System, McGuire Nuclear Station, Units 1 & 2 The NRC has reviewed your letter of July 15, 1985, which proposes changes to the McGuire Technical Specification to delete valve NI-1228 from the list of containment isolation valves. Valve NI-122B is located on a 3/4" safety injection system check valve test header line. You indicate that such deletion from the Technical Specification would be accompanied by a station modification to remove the containment isolation signal and by elimination of associated surveillance and testing requirements.

Our review finds several deficiencies in the current request:

(1) As stated in the McGuire SER Section 6.2.5, the NRC staff reviewed the containment isolation signals for isolation valves to General Design Criteria 54, 55, 56, and 57 and Regulatory Guide 1.11. Your letter does not discuss the proposed deletion in terms of these regulatory requirements; (2) In regard to your proposed station modifications and administrative controls, we find no indication as to whether the valve would be sealed closed in the context of Standard Review Plan 6.2.4; and (3) Your analysis in support of a No Significant Hazards Consideration provides no discussion of an open NI-1228 valve relative to ECCS per-formance in terms of its probability or consequences of an accident previously evaluated nor its influence on a margin of safety.

Pending a revised submittal addressing the above items, we propose to take no further action on your request. Contact'our Project Manager, Darl Hood, on (301) 492-8404, if you have any questions.

Sincerely, Original Signed by L. L. Kintner for 8512040275 851120 Elinor G. Adensam, Chief l PDR ADOCK 05000369 Licensing Branch #4 P PDR Division of Licensing l cc: See next page

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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 Boulevard 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 Commission 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, Libennan, Cook, Purcell Department of Human Resources and Reynolds P.O. Box 12200 1200 Seventeenth Street, N.W. Raleigh, North Carolina 27605 Washington, D. C. 20036 Senior Resident Inspector c/o U.S. Nuclear Regulatory Commission Route 4, Box 529 Hunterville, North Carolina 28078 Regional Administrator, Region II U.S. Nuclear Regulatory Consnission, 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