ML17058A824

Forwards Safety Evaluation Accepting Util Responses to Items Noted in Generic Ltr 88-01 Re IGSCC in BWR Austenitic Stainless Steel Piping W/Exception of Util Position on Sensitization testing.In-situ Metallography Should Be Made

ML17058A824
Person / Time
Site:	Nine Mile Point
Issue date:	06/24/1991
From:	Brinkman D Office of Nuclear Reactor Regulation
To:	Sylvia B NIAGARA MOHAWK POWER CORP.
Shared Package
ML17058A825	List: ML17058A824 ML17058A826
References
TAC-69147, TAC-69148, NUDOCS 9107010149
Download: ML17058A824 (6)

Text

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Docket Nos.

50-220 and 50-410 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555 June 24, 1991 Mr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Yiohawk Power Corporation 301 Plainfield Road

Syracuse, New York 13211

SUBJECT:

REVIEW OF NIAGARA MOHAWK POWER CORPORATION'S RESPONSES TO GENERIC LETTER 88-01 SAFETY EVALUATIONS FOR NINE t~iILE POINT NUCLEAR STATION UNIT NOS.

1 AND 2 (TAC NOS.

69147 AND 69148)

By letters dated September 4, 1990, November 2, 1990, March 7, 1991 (for Nine Yiile Point 1) and November 20, 1990 (for Nine tiIile Point 2), IIiagara Mohawk Power Corporation (NMPC) responded to the items found unacceptable in the NRC staff Safety Evaluations dated May 15, 1990, for Nine Mile Point 1

and August 17, 1990, for Nine Yiile Point 2, regarding NMPC's program for Generic Letter (GL) 88-01, "NRC Position on IGSCC in BWR Austenitic Stainless Steel Piping."

The NRC staff has reviewed NMPC's responses to the items previously found unacceptable and has determined that the responses are acceptable with the exception of NYiPC's position concerning sensitization testing in accordance with ASTM A262-A or -EI or equivalent standard as required by GL 88-01.

NMPC is requested to commit to either performing an in-situ metallography on the subject welds to demonstrate their resistance to sensitization or to reclassify the subject welds so that they will be inspected more frequently.

This commitment should be provided to the NRC in writing within 30 days of receipt of this letter.

Furthermore, if the in-situ metallography option is selected, it should be performed during the 1992 refueling outage.

The NRC staff's evaluations and conclusions are contained in the attached Safety Evaluation.

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Hr. B. Ralph Sylvia June 24, 1991 This requirement for commitment affects one respondent; therefore, is not subject to Office of Hanagement and Budget review under P. L.96-511.

S incere ly,

Enclosure:

Safety Evaluation cc w/enclosure:

See next page Donald S. Brinkman, Senior Pro ject Hanager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

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Mr. B.

Ra 1 ph Sy 1 via Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Unit Nos.

1 and 2

CC:

Mr. Mark J. Wetterhahn, Esquire Winston In Strawn 1400 L Street, HW.

Washington, D.C. 20005-3502 Supervisor Town of Scriba R.

D. 84

Oswego, New York 13126 Mr. Joseph F. Firlit Vice President

- Nuclear Generation Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Post Office Box 32

Lycoming, Hew York 13093 Resident Inspector U. S. Huclear Regulatory Commission Post Office Box 126

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

Syracuse, Hew 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. Martin J.

McCormick Jr.

Plant Manager, Unit 2 Nine Mile Point Nuclear Station Post Office Box 32

Lycoming, Hew York 13093 Charlie 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 Mr. David K. Greene Manager Licensing Niagara Mohawk Power Company 301 P 1 a infiel d Road

Syracuse, Hew York 13212 Mr. Richard Goldsmith Syracuse University College of Law E. I. White Hall Campus

Syracuse, New York 12223 Mr. Richard M. Kessel Chair and Executive Director State Consumer Protection Board 99 Washington Avenue

Albany, New York 12210

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