ML17059A211
| ML17059A211 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 02/22/1994 |
| From: | Brinkman D Office of Nuclear Reactor Regulation |
| To: | Sylvia B NIAGARA MOHAWK POWER CORP. |
| References | |
| GL-89-10, TAC-M87972, NUDOCS 9403030031 | |
| Download: ML17059A211 (8) | |
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Docket No. 50-220 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 22, 1994 Mr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation 301 Plainfield Road
- Syracuse, New York 13212
Dear Mr. Sylvia:
SUBJECT:
GENERIC LETTER 89-10, SUPPLEMENT 5, "INACCURACY OF MOTOR-OPERATED VALVE DIAGNOSTIC EQUIPMENT" NINE MILE POINT NUCLEAR STATION UNIT NO.
1 (TAC NO. M87972)
On June 28, 1993, the NRC staff issued Supplement 5, "Inaccuracy of Hotor-Operated Valve Diagnostic Equipment," to Generic Letter (GL) 89-10, "Safety-Related Motor-Operated Valve Testing and Surveillance," requesting nuclear power plant licensees and construction permit holders:
(1) to reexamine their motor-operated valve (MOV) programs and to identify measures taken to account for uncertainties in properly setting valve operating thrust to ensure operability and (2) to evaluate the schedule necessary to consider the new information on HOV diagnostic equipment inaccuracy and to take appropriate action in response to that information.
Within 90 days of receipt of Supplement 5 to GL 89-10, licensees were required:
(1) to notify the NRC staff of the diagnostic equipment used to confirm the proper size, or to establish settings, for safety-related MOVs and (2) to report whether they had taken actions or planned to take actions (including schedule) to address the new information on the accuracy of HOV diagnostic equipment.
The staff has reviewed the responses, and has found that, for the most part, licensees and permit holders have been actively addressing the uncertainties regarding the accuracy of HOV diagnostic equipment.
The increased inaccuracy of MOV diagnostic equipment can raise questions regarding:
(1) the adequacy of torque switch settings to provide sufficient thrust while not exceeding thrust or torque structural limits and (2) the capability of actuator motors at current settings.
In their responses, licensees and permit holders indicated that many MOVs had the potential for underthrusting or overthrusting as a result of the higher than expected inaccuracy of MOV diagnostic equipment.
Consequently, some licensees reported that MOVs have been
- retested, adjusted, or modified to resolve the concerns regarding the accuracy of MOV diagnostic equipment.
Niagara Mohawk Power Corporation (NHPC) responded to Supplement 5 by letter dated September 27,
- 1993, and stated that NHPC planned to use HOV diagnostic equipment manufactured by Liberty Technologies in the future, but had not purchased the VOTES equipment.
During a future inspection, the NRC staff will evaluate NHPC's resolution of the MOV diagnostic equipment accuracy issue.
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Hr. B. Ralph Sylvia February 22, 1994 V
Although this completes all licensing efforts on TAC No. H87972, the NRC staff is concerned regarding NHPC's apparent lack of progress in resolving the HOV issues of GL 89-10.
Therefore, we propose holding a meeting in which NHPC should discuss its progress to date on this issue and NHPC's plans and schedules for completing all activities related to GL 89-10 at Nine Mile Point Unit No. l.
I will contact Mr. Dave Baker of your staff to arrange the proposed meeting.
If you have any questions regarding this issue, please call me at (301) 504-1409.
cc:
See next page Sincerely, 4~z8.'
Donald S. Brinkman, Senior Project Manager Project Directorate I-I Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
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Mr. B. Ralph Sylvia Niagara Mohawk Power Corporation CC:
Mark J, Wetterhahn, Esquire Winston 5 Strawn 1400 L Street, NW Washington, DC 20005-3502 Supervisor Town of Scriba Route 8, Box 382
- Oswego, New York 13126 Vice President - Nuclear Generation Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.
Box 32
- Lycoming, New York 13093 Resident Inspector U.S. Nuclear Regulatory Commission P.O.
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 Nine Mile Point Nuclear Station Unit No.
1 Hr. Richard B. Abbott Unit 1 Plant Manager Nine Mile Point Nuclear Station P.O.
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 Hr. Paul D. Eddy State of New York Department of Public Service Power Division, System Operations 3 Empire State Plaza
- Albany, New York 12223 Mr. Martin J. HcCormick, Jr.
Vice President Nuclear Safety Assessment and Support Niagara Hohawk Power Corporation Nine Nile Point Nuclear Station P.O.
Box 63
- Lycoming, New York 13093
Hr. B. Ralph Sylvia February 22, 1994 Although this completes all licensing efforts on TAC No. H87972, the NRC staff is concerned regarding NHPC's apparent lack of progress in resolving the MOV issues of GL 89-10.
Therefore, we propose holding a meeting in which NHPC should discuss its progress to date on this issue and NHPC's plans and schedules for completing all activities related to GL 89-10 at Nine Mile Point Unit No. 1.
I will contact Hr. Dave Baker of your staff to arrange the proposed meeting.
If you have any questions regarding this issue, please call me at (301) 504-1409.
Sincerely, cc:
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Docket File NRC 5 Local PDRs PDI-1 Reading SVarga JCalvo RACapra CVogan DBrinkman
- AHansen, 13/E/21 TScarbrough, 16/G/15
CCowgill, RGN-I Original signed by:
Donald S. Brinkman, Senior Project Hanager Project Directorate I-1 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation OFFICE NAME DATE PDI-1: LA CVo an k ll94 PDI-1:PH DBrinkman:avl I7,94 BC:
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