ML17056B053

Advises That Util Responses Addressed Issues in NRC Bulletin 88-004 Re Potential safety-related Pump Loss

ML17056B053
Person / Time
Site:	Nine Mile Point
Issue date:	10/17/1990
From:	Martin R Office of Nuclear Reactor Regulation
To:	Burkhardt L NIAGARA MOHAWK POWER CORP.
References
IEB-88-004, IEB-88-4, TAC-66940, NUDOCS 9010260245
Download: ML17056B053 (8)

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Docket No. 50-220 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, O. C. 20555 October 17, 1990 Mr. Lawrence Burkhardt III Executive Vice President, Nuclear Operations Niagara Mohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212

SUBJECT:

NRC BULLETIN 88-04, POTENTIAL SAFETY-RELATED PUMP LOSS, MPA X804, NINE MILE POINT NUCLEAR STATION UNIT NO.

1 (TAC NO. 66940)

By letters dated July 7, 1988, September 28,

1988, and May 9, 1990, Niagara Mohawk Power Corporation (NMPC) responded to NRC Bulletin 88-04, "Potential Safety-Related Pump Loss" for Nine Mile Point Unit No. 1.

NMPC indicated in a letter dated September 28, 1988, that more detailed evaluations of the Core Spray and Condensate Transfer Systems were required in order to determine the adequacy of these systems to prevent damage resulting from operation and testing in the minimum flow mode.

NMPC also stated that based on further evaluation, a recirculation operability test of the Core Spray System was required.

By letter dated May 9, 1990, NMPC provided the results of this completed evaluation, including Core Spray System test results.

NMPC concluded that minimum flow design concerns were only applicable to the Core Spray System and that, under specific conditions where head flow characteristics would be different from the characteristics existing during the test of the Core Spray System referenced above (e.g.,

pump maintenance),

dead-heading of a pump set might occur.

NMPC proposes to repeat the above test periodically and to perform the test following any maintenance that may change the head flow characteristics of a pump until such time as NMPC may decide to install individual recirculation lines for each pump set.

In accordance with the bulletin, a written response describing the action taken is to be submitted to the NRC within 30 days of completion of the long-term actions.

You are reminded that an evaluation of your actions in response to this bulletin should be documented and maintained on site for a minimum of two years.

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Mr. Lawrence Burkhardt III W

P The staff'inds that NMPC's response has addressed the issues in the bulletin and, therefore, we are closing the subject TAC No. 66940.

Further NRC review, if any, will be by future inspection.

. Robert E. Martin, Senior Project Manager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation CC:

See next page

v Mr. L. Burkhardt III

. 'Niagara Mohawk Power Corporation Nine Mile

>nt Nuclear Station, Unit No.

1 CC:

Mr. Mark J. Wetterhahn, Esquire

Bishop, Cook, Purcell 5 Reynolds 1400 L. Street, N.W.

Washington, D. C.

20005-3502 Supervisor Town of Scriba R. D. ¹4

Oswego, New York 13126 Mr. Joseph F. Firlit General Supt.-Nuclear Generation Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Post Office Box 32

Lycoming, New York 13093 Resident Inspector U. S. Nuclear Regulatory Commission Post Office Box 126

Lycoming, New York 13093 Mr. Gary D. Wilson, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West

Syracuse, New York 13202 Regional Administrator, Region I

U. S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Ms. Donna Ross New York State Energy Office 2 Empire State Plaza 16th Floor

Albany, New York 12223 Mr. Kim Dahlberg Unit 1 Station Superintendent Nine Mile Point Nuclear Station Post Office Box 32

Lycoming, New York 13093 Mr. Peter E. Francisco, Licensing Niagara Mohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212 Charlie Donaldson, Esquire Ass i s tant Attorney Gener a 1 New York Department of Law 120 Broadway New York, New York 10271 Mr. Paul D. Eddy State of New York Department of Public Service Power Division, System Operations 3 Empire State Plaza

Albany, New York 12223

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Mr. Lawrence Burkhardt III 2

The staff finds that NMPC's response has addressed the issues in the bulletin and, therefore, we are closing the subject TAC No. 66940.

Further NRC review, if any, will be by future inspection.

pRlGlNAL SlGNED BY CC:

See next page DISTRIBUTION:

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BURKKARDT MEMO TAC 66940

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