ML20043H229
| ML20043H229 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 06/18/1990 |
| From: | Leeds E Office of Nuclear Reactor Regulation |
| To: | Frizzle C Maine Yankee |
| References | |
| GL-89-10, TAC-75679, NUDOCS 9006220268 | |
| Download: ML20043H229 (3) | |
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June 18,1990 Docket No. 50-309
-Mr. C. D.' Frizzle, President Maine Yankee Atomic Power Company B3 Edison Drive Augusta, Maine 04336
Dear Mr. Frirrle:
SUBJECT:
RESPONSE TO GENERIC LETTER 89-10. " SAFETY-RELATED MOTOR-OPERATED VALVE (MOV)TESTlHGANDSURVEILLANCE"(TACNo.75679)
On June 28, 1989, the NRC issued Generic Letter (GL) 89-10 requesting the establishment of a program to ensure the operability of all safety-related j
MOVs under design-basis conditions. The program in GL 89-10 significantly expands the scope of the program outlined in NRC Bulletin 85-03 and its supplement.
In accordance with the schedule provided in the GL, a description of your MOV program should be available for review by June 28, 1990, or the first refueling outage after December 28, 1989, whichever is later.
Information that should be contained in your program description was discussed during the workshops held in September 1989. The staff positions on questions presented during the workshops will be issued in the form of a supplement to the GL. As your program is developed, justification for any differences between your program and the GL exemplified by the workshop comments should be incorporated into your program description.
On February 1,1990, you submitted a response to GL 89-10. " Safety-Related Motor-Operated Valve Testing and Surveillance," regarding the Maine Yankee Nuclear Power Station. Several comments on your submittal are provided below.
l In your response to Item b of GL 89-10, you state that you do not plan to modify yocr MOV switch setting program which was developed in 1987. You should evaluate your switch setting program to ensure that it is consistent with current knowledge with respect to MOV operating characteristics, t
l Your response to Item c of the generic letter indicates that you intend to l
conduct design-basis tests on MOVs "where practicable and necessary."
In this regard, you indicate that you may attempt to justify the operability of an MOV I
by establishing a family of MOVs and testing one, or'several MOVs, in that family urder design-basis conditions. As discussed at the workshops, the uncertainty with respect to the application of test data from one MOV to another was one reason for the staff's recomendation in the GL that MOVs be l
tested in-situ under design-basis conditions, where practicable. Also, at the 4
workshops, the staff indicated many of the factors that will need to be ir considered in order to justify the application of test data between MOVs.
Where testing an MOV in-situ under design-basis conditions is not )rac1.icable l
l and you cannot justify the application of available test data to tiat MOV.
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June 18,1990 the staff recommends that you follow the "two stage" approach as outlined in the GL and discussed at the workshops. With this approach, you would sciect switch settings for the MOVs using the best data available and then work to obtain the best applicdtion test data as soon as possible.
In your response to Item h of the GL, you state that your procedures normally do not require as.found conditions to be recorded during routine maintenance or preventive maintenance activities. As discussed at the workshops, this information could provide valuable insights into the effectiveness of your program to ensure proper POV performance. The staff recommends that you consider modifying your procedure in this area.
Your res)onse to item i of the GL indicates that the design. basis review of MOVs wit 11n the GL program will be completed within five years, but does not mention the schedule for completion of your initial GL program.
If design. basis reviews will not be completed for five years, it is improbable that the initial testing activities can be completed with the schedule recommendedby)theGL.Item 1 of the generic letter required that, pursuant to 10 CFR 50.54(f, all licensees advise the NRC of their plans regarding the GL schedule.
Please provide a discussion of your plans with respect to the five-year or three. refueling outage schedule recommended by the GL for completion of the initial test program.
Sincerely, Original signed by Eric J. Leeds, Project Manager l
Project Directorate 1-3 Division of Reactor Projects I/11 l
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i 0FFICIAL RECORD COPY Document Name: MY.GL 8910 RESPONSE l
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.e Mr. C. D. Frizzle CC:
Mr. Charles B. Brinkman Mr. G. D. Whittier, Manager Manager - Washington Nuclear Nuclear Engineering and Licensing Operations Maine Yankee Atomic Power Company Combustion Engineering, Inc.
83 Edison Drive 12300 Twinbrook Parkway Suite 330 Augusta, Maine 04336 Rockville, Maryland 20852 Mr. Robert W. Blackmore, John A. Ritsher, Esquire Plant Manager Ropes & Gray Maine Yankee Atomic Power Company 225 Franklin Street P.O. Pox 408 Boston, Massachusetts 02110 Wiscasset, Maine 04578 State Planning Officer Executive Department 189 State Street Augusta, Maine 04330 Dr..E. T. Boulette, Vice President Operations Maine Yankee Atomic Power Company P. O. Box 408 Wiscasset, Maine 04578 Mr. J. H. Garrity, Vice President Licensing and Engineering Maine Yankee Atomic Power Company 83 Edison Drive Augusta, Maine 04336 Regional Administrator, Region i U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 First Selectman of Wiscasset Municipal Building U.S. Route 1 Wiscasset, Maine 04578 Mr. Cornelius F. Holden Resident Inspector Maine Yankee Atomic iower Station 1
V.S. Nuclear Regulatory Commission P. O. Box E
'Wiscasset, Maine 04!78 Mr. P. L. Anderson, /roject Manager Yankee Atomic Elect.ic Company 580 Main Street Bolton, Massachusetts 01740-1398 l
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