ML20126L845

Notifies That Proposal to Allow Operation of Facility W/ Optimized Westinghouse Fuel Assembly Loadings W/O upper-head Injection at Power Levels Exceeding 46% Introduces Unevaluated Accident Scenario.Notice Encl

ML20126L845
Person / Time
Site:	Mcguire, McGuire
Issue date:	07/22/1985
From:	Novak T Office of Nuclear Reactor Regulation
To:	Tucker H DUKE POWER CO.
Shared Package
ML20126L850	List: ML20126L845 ML20126L855
References
NUDOCS 8508010087
Download: ML20126L845 (2)

Text

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Docket Nos.: 50-369 July 22, 1985 DISTRIBUTION and 50-370 Docket;Nos :250-369/370 NRC PDR Local PDR l I

LB#3 R/F Mr. H. B. Tucker, Vice President EAdensam )

Nuclear Production Department MDuncan l Duke Power Company DHood 422 South Church Street Attorney, ELD Charlotte, North Carolina 28242 JTaylor, I&E DJordan

Dear Mr. Tucker:

ACRS (16)

NLauben DLatigford

SUBJECT:

OPERATION WITHOUT UHI (MCGUIRE NUCLEAR STATION, UNITS 1 AND 2)

Your letter dated May 9, 1985, contained a proposed amendment to the Technical Specifications for the McGuire Nuclear Station that would allow operation up to full power with the Upper Head Injection Accumulator System (UHI) either installed or removed. In support of your request and in conformance with the requirements of 10 CFR 50.91, you provided the results of your analysis of significant hazards consideration.

Based on our evaluation of your significant hazards consideration, we do not agree that the proposed amendment would not create the possibility of a new or different type of accident from any accident previously evaluated. Indeed our evaluation of the McGuire FSAR accident analysis was exclusively based on the availability of VHI during the accident. Our subsequent evaluations for previous Amendments 37 (Unit 1) and 18 (Unit 2) which authorized operation of the units at up to 46% rated thermal power with UHI inoperable applied only to core loadings of standard Westinghouse 17 x 17 fuel assemblies. Your proposal to allow operation of McGuire with its optimized Westinghouse fuel assembly loadings without the UHI at power levels in excess of 46% introduces an accident scenario not previously evaluated. We conclude that the proposed amendment does involve a significant hazards consideration. We are, therefore, issuing a notice (copy attached) of opportunity for prior hearing.

Sincerely,

/

3 Thomas M. Novak, Assistant Director for Licensing Division of Licensing

Enclosure:

As stated g PDR cc: 'See next page P khM0507 850722 9 DS6 DL:LBf4 DLjh4 Dif: #4 RSB l6 DHood:tm MDuncan EAMe am NLauben 06 & 7/85 06/[//85 06 85 06/11/85 85

Mr. H. B. Tucker McGuire Nuclear Station Duke Power Company 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, Liberman, 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 Mr. Wm. Orders Senior Resident Inspector c/o U.S. Nuclear Regulatory Commission Route 4, Box 529 Hunterville, North Carolina 28078 Regional Administrator U.S. Nuclear Regulatory Commission, Region II 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 R. S. Howard Operating Plants Projects Regional Manager Westinghouse Electric Corporation - R&D 701 P. O. Box 2728 Pittsburgh, Pennsylvania 15230 l

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