ML17058A822

Forwards Request for Addl Info Re Util 910307 Response to Generic Ltr 89-10,suppl 3, Consideration of Results of NRC- Sponsored Tests of Motor-Operated Valves

ML17058A822
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.
References
GL-89-10, TAC-77787, TAC-77788, NUDOCS 9107010056
Download: ML17058A822 (12)

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

Syracuse, New York 13211

SUBJECT:

RE(UEST FOR ADDITIONAL INFORHATION RE:

GENERIC LETTER (GL) 89-10, SUPPLEHENT 3:

"CONSIDERATION OF THE RESULTS OF NRC-SPONSORED TESTS OF HOTOR-OPERATED VALVES" (TAC NOS.

77787 AND 77788)

By letters dated Harch 7, 1991, for Unit 1 and Harch 12, 1991, for Unit 2, Niagara Hohawk Power Corporation submitted a response to the 120-day, 10 CFR

'0.54(f), reporting requirements of GL 89-10, Supplement 3, for Nine Hile

,Point Nuclear Station Units 1 and 2.

After reviewing your responses, the NRC staff has concluded that the additional information identified in the enclosures is necessary to make a safety determination regarding the subject motor-operated valves.

Response

to the enclosed Request for Additional Information (RAI) is requested within 30 days from receipt of this letter.

This request is covered by Office of Hanagement and Budget Clearance Number 3150-0011, which expires June 30, 1991.

The estimated average burden hours are 80 person-hours per licensee

response, including searching data

sources, gathering and analyzing the data, performing data evaluations, and preparing the required letters.

These estimated average burden hours pertain only to the identified response-related matters and do not include the time for actual implementation of the requested action.

Send comments regarding this burden estimate or any other aspect of this collection of information, including suggesti'ons for reducing this"burden,-to the Information and Records Hanagement Branch, Division of Information Hanagement, U.S. Nuclear Regulatory Commission Washington, BC, 20555, and to the Paperwork Reduction Project (3150-0011], Office of Wanagement and Budget, Washington, BC, 20503.

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I II,I June 24, 1991 Should you have any questions regarding this RAI, please contact me at (301) 492-1409.

Sincerely,

Enclosures:

l. Unit 1 RAI

2. Unit 2 RAI cc w/enclosures:

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

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Mr. B. Ralph Sylvia Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station Unit Nos.

1 and 2

CC:

Hr. Hark J. Wetterhahn, Esquire Winston 5 Strawn 1400 L Street, NW.

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, 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 Hr. Martin J. McCormick Jr.

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

Lycoming, New York 13093 Charlie Donaldson, Esquire Assistant Attorney General New York Department of Law 120 Broadway New York, New York 10271 Hr. Paul D. Eddy State of New York Department of Public Service Power Division, System Operations 3 Empire State Plaza

Albany, New York 12223 Hr. David K. Greene Manager Licensing Niagara Mohawk Power Company 301 Plainfield Road

Syracuse, New 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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ENCLOSURE 1

REQUEST FOR ADDITIONAL INFORMATION REGARDING SUPPLEMENT 3

TO GENERIC LETTER 89-10, "CONSIDERATION OF THE RESULTS OF NRC-SPONSORED TESTS OF MOTOR-OPERATED VALVES" NIAGARA MOHAWK POWER CORPORATION NINE MILE POINT NUCLEAR STATION UNIT NO.

1 DOCKET NO. 50-220 The following information is requested to continue our review of your response to Supplement 3 of GL 89-10:

1.

Identify any modifications (e.g.,

torque switch setting adjustments, gearing

changes, or motor/actuator replacement) for each MOV within the scope of Supplement 3 to GL 89-10 since June 1990 or planned for the future.

2.

Provide the actuator and motor sizes, and information necessary to confirm motor adequacy for each MOV within the scope of Supplement 3 to GL 89-10.

3.

In Information Notice 90-72 (November 28, 1990), "Testing of Parallel Disc Gate Valves in Europe," the NRC staff indicates that foreign utilities are using a valve factor of 0.4 for a new German design of parallel disk gate valves.

What is your justification for using a valve factor of 0.2 for parallel disk gate valves?

How do you plan to confirm the sizing of the motor operator and its torque switch settings for the parallel disk design in your valves?

4.

Has the leakage rate with an MOV 95'4 closed been evaluated?

Will the Appendix J or ASME Code leakage limits be met 'at that percent closure?

5.

How have you addressed the rate of loading phenomenon in MOV sizing and torque switch settings'?

ENCLOSURE 2

RE(UEST FOR ADDITIONAL INFORMATION REGARDING SUPPLEMENT 3

TO GENERIC LETTER 89-10 "CONSIDERATION OF THE RESULTS OF NRC-SPONSORED TESTS OF MOTOR-OPERATED VALVES" NIAGARA MOHAWK POWER CORPORATION NINE MILE POINT NUCLEAR STATION, UNIT 2 DOCKET NO. 50-410 The following information is requested to continue our review of your response to Supplement 3 of GL 89-10:

1.

Identify any modifications (e.g.,

torque switch setting adjustments, gearing

changes, or motor/actuator replacement) for each MOV within the scope of Supplement 3 to GL 89-10 since June 1990 or planned for the future.

2.

Has the leakage rate with an MOV 95% closed been evaluated?

Will the leakage limits of Appendix J or ASME Code be met with this percent MOV closure?

3.

Provide the actuator and motor type/size, and information necessary to confirm motor adequacy for each MOV within the scope of Supplement 3 to GL 89-10.

4.

What are the current torque switch settings for RCIC MOV (2ICS*MOV128) in pounds thrust?

5.

How have you addressed the rate of loading phenomenon in MOV sizing and torque switch settings?

June 24, 1991 Should you have any questions regarding this RAI, please contact me at (301) 492-1409.

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Enclosures:

1. Unit 1 RAI

2. Unit 2 RAI cc w/enclosures:

See next page DISTRIBUTION:

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