ML17058B058

Forwards SE Requesting Addl Info Re Util 920918 Response to Suppl 1 of GL 87-02

ML17058B058
Person / Time
Site:	Nine Mile Point
Issue date:	11/17/1992
From:	Brinkman D Office of Nuclear Reactor Regulation
To:	Sylvia B NIAGARA MOHAWK POWER CORP.
Shared Package
ML17058B059	List: ML17058B058 ML17058B060
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR GL-87-02, GL-87-2, TAC-M69461, NUDOCS 9211240299
Download: ML17058B058 (8)

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Docket No. 50-220 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON. D.C. 20555 ilovember 17, 1992 Hr.

B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212

SUBJECT:

SAFETY EVALUATION AND REQUEST FOR ADDITIONAL INFORMATION REGARDING SEPTEMBER 18,

1992,

RESPONSE

TO SUPPLEMENT NO.

1 OF GENERIC LETTER 87-02 (TAC NO. H69461)

By letter dated September 18,

1992, Niagara Mohawk Power Corporation (NHPC) submitted its response to Supplement No.

1 of Generic Letter 87-02, "Verification of Seismic Adequacy of Mechanical and Electrical Equipment In Operating Reactors, Unresolved Safety Issue (USI) A-46" for Nine Mile Point Nuclear Station Unit No.

1.

Supplement No.

1 to GL 87-02 required that all addressees provide, within 120 days of the issue date of the supplement, either a commitment to use both the Seismic Qualification Utility Group (SQUG) commitments and the implementation guidance described in the Generic Implementation Procedure, Revision 2

(GIP-2),

as corrected on February 14,

1992, and as supplemented by the NRC staff's Supplemental Safety Evaluation Report No.

2 (SSER No. 2) on GIP-2, or else provide an alternative method for responding to GL 87-02.

The supplement also required that those addressees committing to implement GIP-2 provide an implementation

schedule, and provide the detailed information as to what procedures and criteria weve used to generate the in-structure response spectra to be used for USI A-46.

In addition, the staff requested in SSER No.

2 that the licensees inform the staff in the 120-day response if they intend to change their licensing basis to reflect a commitment to the USI A-46 (GIP-2) methodology for verifying the seismic adequacy of mechanical and electrical equipment prior to receipt of the staff's plant-specific safety evaluation resolving USI A-46.

The NRC staff has reviewed NMPC's September 18, 1992, submittal.

Our evaluation of NHPC's submittal is contained in the attached safety evaluation (Enclosure 1).

The NRC staff finds that NMPC's commitment to implement GIP-2, including clarifications, interpretations and exceptions identified in SSER No.

2, is an acceptable method for resolving USI A-46 at NMP-1.

However, in addition to implementing the guidance provided in the August 21,

1992, SQUG

letter, NMPC should also refer to Enclosure 2 to this letter which provides the NRC staff's response to the SQUG letter.

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Hr. B. Ralph Sylvia November 17, 1992 The NRC staff noted that NHPC did not indicate in its submittal that NMPC intended to change its licensing basis to reflect a commitment to the USI A-46 methodology prior to receipt of the staff's plant-specific safety evaluation.

Therefore, NHPC is requested to submit, within 60 days of receipt of this

letter, NHPC's intention with respect to changing the licensing basis for Nine Mile Point l.

NHPC identified one exception in its September 18,

1992, submittal which involved the evaluation of neutron monitoring system.

As discussed in the attached safety evaluation, this exception has been reviewed by the NRC staff and it is acceptable.

The NRC staff has reviewed and finds NHPC's plans to upgrade and reconcile the results of previous walkdown seismic reviews conducted in 1988 and 1989 with the provisions of GIP-2 acceptable.

NMPC also stated that its USI A-46 implementation would be completed within the 3-year response period requested by the staff in Supplement No.

1 to GL 87-02 and is therefore acceptable.

Our review to date has disclosed that NHPC did not provide sufficient information regarding the development of the ground response spectrum (GRS) and the in-structure response spectra (IRS).

Therefore, NHPC is requested to provide the additional information requested in the attached safety evaluation within 60 days of receipt of this letter.

The information requested by this letter is within the scope of the overall burden estimated in Generic Letter 87-02 for the S(UG program, which was a

maximum of 120 person hours per owner response

period, This request is covered by Office of Management and Budget Clearance Number 3150-0011, which expires May 31, 1994.

Sincerely,

Enclosures:

1.

Safety Evaluation 2.

Letter to Neil Smith, from James G. Partlow, dated, October 2, 1992 cc w/enclosures:

See next page Donald S.

Brinkman, Senior Project Manager Project Directorate I-l Division of Reactor Projects I/II Office of Nuclear Reactor Regulation

Hr. B. Ralph Sylvia Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Unit No.

1 CC:

Mark J. Wetterhahn, Esquire Winston

& Strawn 1400 L Street, NW Washington, DC 20005-3502 Supervisor Town of Scriba Route 8, Box 382

Oswego, New York 13126 Resident Inspector U.S. Nuclear Regulatory Commission Post Office Box 126

Lycoming, New York 13093 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 Hs.

Donna Ross New York State Energy Office 2 Empire State Plaza 16th Floor

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

Lycoming, New York 13093 Hr. David K. Greene Manager Licensing Niagara Mohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13212 Charles Donaldson, Esquire Assistant Attorney General 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

SUBJECT'AFETY EVALUATION AND REQUEST FOR ADDITIONAL INFORMATION REGARDING SEPTEMBER 18,

1992,

RESPONSE

TO SUPPLEMENT NO.

1 OF GENERIC LETTER 87-.02 (TAC NO. M69461)

Distribution dated November 17, 1992

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