ML20137Q100
| ML20137Q100 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 01/28/1986 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| CDR-83--1, CDR-83-00-01, SBN-934, NUDOCS 8602050531 | |
| Download: ML20137Q100 (3) | |
Text
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MI SEABROOK STATION Engineering Office Pub 5c SeMce of New Hampshko New Hampshire Yankee Division January 28, 1986 SBN-934 T.F. Q2.2.2 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 Attention:
Mr. Richard W. Starostecki, Director Division of Project and Resident Programs
References:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) PSNH Letter SBN-518, dated June 10, 1983, " Final 10CFR50.55(e) Report; Westinghouse EMD Gate Valve Position Indication," J. DeVincentis to R. W. Starostecki
Subject:
Final 10CFR50.55(e) Report; Westinghouse EMD Cate Valve Position Indication - Unit 1 Corrective Action Complete (CDR 83-00-01)
Dear Sir:
In Reference (b), we filed a 10CFR50.55(e) report regarding a deficiency with certain Westinghouse manufactured gate valves. This deficiency was previously evaluated and determined to be reportable under the provisions of 10CFR50.55(e).
Description of Deficiency The potential exists for certain Westinghouse manufactured gate valves to provide indication that they are closed prior to the valve disc fully isolating flow.
This is possible because the Westinghouse generic wiring specifications incorporate a motor-operated valve limit switch setting which may provide an erroneous indication that the valve is fully closed, when in l
actuality, it may be slightly open.
Safety Implications s
As a result of the erroneous valve position indication, an intersystem leakage path may go undetected.
8602050531 860128 PDR ADOCK 0S000443 S
PDR P.O. Box 300 Smbrook.NH O3874 Telephone (603)474-9521 3
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United States Nuclear Regulatory Commission Attention:
Mr. Richard W. Starostecki Page 2 Corrective Action Westinghouse has provided a recommended modification to the generic wiring specifications. The change provides a new procedure for setting and connecting the limit switch to ensure that upon receipt of a closure indication, the flow path has been isolated.
A design change was initiated to implement the corrective action as recommended by Westinghouse. With the above corrective action having been verified completed for Unit 1, this is considered our final report on this item for Unit 1.
The corrective action for the applicable Unit 2 Westinghouse manufactured valves has not yet been completed and is being tracked by a Field Change Notice (FCN). We will inform Region I when the corrective action for the Unit 2 equipment has been completed.
Very truly yours, vb p
John DeVincentis, Director Engineering and Licensing cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 l
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William S. Jordan, III Donald E. Chick Diane Curran Town Manager Harmon, Weiss & Jordan Town of Exeter 20001 S. Street, N.W.
10 Fron. Street Suite 430 Exeter, NH 03833 Washington, D.C.
20009 Brentwood Board of Selec tmen Robert G. Perlis RED Dalton Road Office of the Executive Legal Director Brentwood, NH 03833 U.S. Nuclear Regulatory Commission Wa s hi ng t on, DC 20555 Richard E. Sullivan, Mayor City Hall Robert A. Backus, Esquire Newbu rypo r t, MA 01950 116 Lowell Street P.O. Box 516 Calvin A. Canney Manc hester, NH 03105 City Manager City Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Augusta, ME 04333 Dana Bisbee, Esquire Mr. John B. Tanzer Assistant Attorney Gene ral Designated Representative of Office of the Attorney General the Town of Hampton 206 State House Annex 5 Morningside Drive Concord, NH 03301 Hampton, NH 03842 Anne Verge, Chairperson Roberta C. Pevear Board of Selec tmen Designated Representative of Town Hall the Town of Hampton Falls South Hampton, NH 03827 Drinkwater Road Hampton Falls, NH 03844 Patrick J. McKeon Selectmen's Office Mrs. Sandra Gavutis 10 Central Road Designated Representative of Rye, NH 03870 the Town of Kensington RFD 1 Carole F. Kagan, Esquire East Kingston, NH 03827 Atomic Safety and Licensing Board Panel U.S. Nuclear Regulatory Commission Jo Ann Shotwell, Esquire Washington, DC 20555 l
Assistant Attorney General l
Environmental Protec tion Bureau Mr. Anu "achiros Department of the Attorney General Chairman of the Board of Selectmen One Ashburton Place, 19th Floor Town of Newbury l
Boston, MA 02108 Newbury, MA 01950 l
Senator Gordon J. Humphrey Town Manager's Office i
U.S. Senate Town Hall - Friend Street l
Washington, DC 20510 Amesbury, MA 01913 (ATTN: Tom Burack)
Senator Gordon J. Humphrey Diana P. Randall 1 Pillsbury St reet 70 Collins St reet Co nc o rd, NH 03301 I
Seabrook, NH 03874 (ATTN: Herb Boynton) i I
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