ML16293A822
| ML16293A822 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Mcguire, Catawba, McGuire  |
| Issue date: | 02/18/1994 |
| From: | Plisco L Office of Nuclear Reactor Regulation |
| To: | Tuckman M DUKE POWER CO. |
| References | |
| GL-89-10, TAC-M87931, TAC-M87932, TAC-M87966, TAC-M87967, TAC-M87976, TAC-M87977, TAC-M87978, NUDOCS 9403030086 | |
| Download: ML16293A822 (4) | |
Text
6V~ REGU 0
0 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 18, 1994 Docket Nos. 50-269, 50-270, 50-287, 50-369 and 50-370, 50-413, 50-414 Mr. M. S. Tuckman Senior Vice President Nuclear Operations Duke Power Company 526 South Church Street Charlotte, North Carolina 28242
Dear Mr. Tuckman:
SUBJECT:
GENERIC LETTER 89-10, SUPPLEMENT 5, "INACCURACY OF MOTOR-OPERATED VALVE DIAGNOSTIC EQUIPMENT" (TAC NOS. M87976, M87977, M87978, M87966, M87967, M87931, AND M87932)
On June 28, 1993, the NRC staff issued Supplement 5, "Inaccuracy of Motor 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 re-examine their 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 MOV 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 MOV 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 NOV 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.
You responded to Supplement 5 by letter dated September 27, 1993. In your submittal, the following information was provided for the three Duke Power Company Stations. At Oconee, the Liberty Technologies' VOTES equipment is used primarily for MOV diagnostic testing of gate valves with the ITI-MOVATS 9403030086 940218 PDR ADOCK 05000269 P
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Mr. M. S. Tuckman
- 2 TMD used in a few cases. Also, at Oconee, butterfly valves are torque bench tested. At McGuire, Liberty Technologies' VOTES equipment is used primarily for MOV diagnostic testing with direct in-line load cells for Kerotest valves,,
and Rotork and butterfly valves are torque bench tested. At Catawba, Liberty Technologies' VOTES equipment is used primarily for MOV diagnostic testing with direct in-line load cells for Kerotest valves, and Teledyne Smart Stems are used when high accuracy is needed and for new MOVs. Also, at Catawba, Rotork and butterfly valves are torque bench tested. During a future inspection, the NRC staff will discuss your resolution of the MOV diagnostic equipment accuracy issue. Particularly, the staff will discuss the method by which Duke Power Company addressed the ITI-MOVATS and VOTES issues and the results of your evaluations.
This completes our actions on TAC NOS. M87976, M87977, M87978, M87966, M87967, M87931 and M87932. If you have any questions regarding this issue, please call me at (301) 504-1490.
Sincerely, Original signed by:
Loren R. Plisco, Acting Director Project Directorate 11-3 Division of Reactor Projects -
I/II Office of Nuclear Reactor Regulation cc:
See next page DISTRIBUTION Do ket File/
A. Hansen NRC & Local PDRs T. Scarbrough PD23 Reading File S. Varga G. Lainas R. Martin V. Nerses L. Wiens L. Berry L. Plisco OGC ACRS (10)
E. Merschoff, RH OFC LA:PD23 PJ 23 PM: PDR D
D:PD23 NAME LBerry Id tV s
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Duke Power Company Catawba Nuclear Station McGuire Nuclear Station Oconee Nuclear Station cc:
Mr. Z. L. Taylor Mr. Alan R. Herdt, Chief Regulatory Compliance Manager Project Branch #3 Duke Power Company U. S. Nuclear Regulatory Commission 4800 Concord Road 101 Marietta Street, NW Suite 2900 York, South Carolina 29745 Atlanta, Georgia 30323 A. V. Carr, Esquire North Carolina Electric Membership Duke Power Company Corporation 422 South Church Street P. 0. Box 27306 Charlotte, North Carolina 28242 Raleigh, North Carolina 27611 J. Michael McGarry, III, Esquire Saluda River Electric Cooperative, Winston and Strawn Inc.
1400 L Street, NW.
P. 0. Box 929 Washington, DC 20005 Laurens, South Carolina 29360 North Carolina Municipal Power Senior Resident Inspector Agency Number 1 Route 2, Box'179N 1427 Meadowwood Boulevard York, South Carolina 29745 P. 0. Box 29513 Raleigh, North Carolina 27626 Regional Administrator, Region II U.S. Nuclear Regulatory Commission Mr. T. Richard Puryear 101 Marietta Street, NW Suite 2900 Nuclear Technical Services Manager Atlanta, Georgia 30323 Westinghouse Electric Corporation Carolinas District Max Batavia, Chief 2709 Water Ridge Parkway, Suite 430 Bureau of Radiological Health Charlotte, North Carolina 28217 South Carolina Department of Health and Environmental Control County Manager of York County 2600 Bull Street York County Courthouse Columbia, South Carolina 29201 York, South Carolina 29745 Ms. Karen E. Long Richard P. Wilson, Esquire Assistant Attorney General Assistant-Attorney General North Carolina Department of Justice S.C. Attorney-General's Office P. 0. Box 629 P. 0. Box 11549 Raleigh, North Carolina 27602 Columbia, South Carolina 29211 Mr. G. A. Copp Piedmont Mudicipal Power Agency Licensing -
ECO50 121 Village Drive Duke Power Company Greer, South Carolina 29651 526 South Church Street Charlotte, North Carolina 28242 0001
Duke Power Company Catawba Nuclear Station McGuire Nuclear Station Oconee Nuclear Station cc:
Dr. John M. Barry Mr. Steve Benesole Mecklenburg County Compliance Department of Environmental Duke Power Company Protection Oconee Nuclear Site 700 N Tryon Street P. 0. Box 1439 Charlotte, North Carolina 29202 Seneca, South Carolina 29679 County Manager of Mecklenburg County Mr. Robert B. Borsum 720 East Fourth Street Babcock & Wilcox Charlotte, North Carolina 28202 Nuclear Power Division Suite 525 Mr. Robert 0. Sharpe 1700 Rockville Pike Compliance Rockville, Maryland 20852 Duke Power Company McGuire Nuclear Site Manager, LIS 12700 Hagers Ferry Road NUS Corporation Huntersville, North Carolina 28078 2650 McCormick Drive, 3rd Floor Clearwater, Flordia 34619-1035 Senior Resident Inspector c/o U.S. Nuclear Regulatory Senior Resident Inspector Commission U.S. Nuclear Regulatory Commission 12700 Hagers Ferry Road Route 2, Box 610 Huntersville, North Carolina 28078 Seneca, South Carolina 29678 Mr. Dayne H. Brown, Director Mr. David L. Rehn Department of Environmental Vice President, Catawba Site Health and Natural Resources Duke Power Company Division of Radiation Protection 4800 Concord Road P. 0. Box 27687 York, South Carolina 29745 Raleigh, North Carolina 27611 Mr. T. C. McMeekin Office of Intergovernmental Vice President, McGuire Site Relations Duke Power Company 116 West Jones Street 12700 Hagers Ferry Road Raleigh, North Carolina..27621 Huntersville, North Carolina 28078 County Supervisor of Oconee County Walhalla, South Carolina 27621 Mr. J. W. Hampton Vice President, Oconee Site Duke Power Company P. 0. Box 1439 Seneca, South Carolina 29679