ML20132D420

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Final Deficiency Rept CDR 84-00-07 Re Defective Westinghouse SA-1 Relays Used in Protection Scheme for Emergency Diesel Generators.Initially Reported on 840516.Corrective Actions Based on Manufacturer Recommendations Completed
ML20132D420
Person / Time
Site: Seabrook  NextEra Energy icon.png
Issue date: 07/10/1985
From: Devincentis J
PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To: Starostecki R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
CDR-84--7, CDR-84-00-07, SBN-843, NUDOCS 8507310397
Download: ML20132D420 (2)


Text

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SEABROOK STATION Engineering Office July 10, 1985 New Hampshire Yankee Division SBN-843 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, Direc tor Division of Project and Resident Programs

References:

(a) Construc tion Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) PSNH Letter SBN-656, "10CFR50.55(e) Report; Westinghouse Type SA-1 Differential Relays," J. DeVincentis to R. W. Starostecki, dated May 16, 1984

Subject:

Final 10CFR50.55(e) Report: Westinghouse Type SA-1 Differential Relays (CDR 84-00-07)

Dear Sir:

In Reference (b), we filed an interim 10CFR50.55(e) report regarding a number of potential deficiencies associated with Westinghouse Type SA-1 differential relays which are used in the protection scheme for the emergency diesel generators. The deficiencies involved defective silicon-controlled rectifiers, defective tantalum capacitors and insuf ficient surge-withstand capability.

As stated in Reference (b), we planned to correct the applicable deficiencies based on manufacturer's recommendations. The corrective ac tions based on manuf acturer's recommendations have been verified complete. This is our final report on this item.

Very truly y urs, A&

John DeVincentis, Direc tor 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 8507310397 850710

{DR ADOCK 05000443 PDR-P.O. Box 300 Seobrook.NH 03874 Telephone (603)474 9521

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'~ h William S. Jordan, III Donald E. Chick Diane Curran Town Manager Harmon, Weiss & Jordan Town of Exeter 20001 S. Street, N.W.

10 Front Street Suite 430 Exeter, NH 03833 Washington, D.C.

20009 Brentwood Board of Selectmen Robert G. Perlis RED Dalton Road Office of the Executive Legal Director Brentwood, NH 03833 U.S. Nuclear Regulatory Commission Washington, DC 20555 Richard E. Sullivan, Mayor City Hall Robert A. Backus, Esquire Newburyport, MA 01950 116 Lowell Street P.O. Box 516 Calvin A. Canney Manchester, 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 General Designated Representative of Office of the Attorney General the Town of Hampton 208 State House Annex 5 Morningside Drive Concord, NH 03301 Hampton, NH 03842 Anne Verge, Chairperson Roberta C. Pevear Board of Selectmen Designated Representative of Town Hall the Town of Hampton Falls South Hampton, NH 33827 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 Assistant Attorney General Environmental Protection Bureau Mr. Angi Machiros Department of the Attorney General Chairman of the Board of Selectmen One Ashburton Place, 19th Floor Town of Newbury Boston, MA 02108 Newbury, MA 01950 Senator Gordon J. Humphrey Town Manager's Office U.S. Senate Town Hall - Friend Street Washington, DC 20510 Anesbury, MA 01913 (ATTN: Tom Burack)

Senator Gordon J. Humphrey Diana P. Randall 1 Pillsbury Street 70 Collins Street Concord, NH 03301 Seabrook, NH 03874 (ATTN: Herb Boynton) 1

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