ML20087J359

Interim Deficiency Rept Re Possible Jamming of Gould Combination Reversing Motor Starters.Initially Reported on 840210.Gould Replacing All Defective Combination Reversing Motor Starters.Next Rept Will Be Provided by 840430

ML20087J359
Person / Time
Site:	Seabrook
Issue date:	03/05/1984
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE, YANKEE ATOMIC ELECTRIC CO.
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
SBN-631, NUDOCS 8403220164
Download: ML20087J359 (3)

Text

T SEAMOOK SWIM Enginoeving Osce:

IPUEBLIC Companyof New SERVICE Hampshw e 1671 Worcester Road Framinchom, Massachusetts 01701 (617) - 872 8100 March 5, 1984 SBN- 631 T.F. Q2.2.2 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 Attention: Mr. Richard W. Starostocki, Director Division of Project and Resident Programs

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of February 10, 1984, A. L. Legendre (YAEC) to Robert Gallo (NRC, Region I)

Subj ect: Interim 10CFR50.55(e) Report; Could Combination Reversing Motor Starters

Dear Sir:

On February 10, 1984, a potentially reportable 10CFR50.55(e) item was reported (Reference (b)] regarding problems with Gould combination reversing motor starters. We have reviewed the problems further, and conclude that they are reportable as a 10CFR50.55(e) deficiency. The following is our interim report concerning this subject.

Description of Deficiency A Gould combination reversing motor starter jammed during preoperational testing. Inspection of the starter found that the screws for termination of the internal load side wiring to the contactors had pierced the phenolic side of the contactor. The resulting phenolic chips then migrated internally to

, the contactor and caused it to jam. In addition, the inspection found that the overload relays were pinching the internal wires and had caused insulation damage which eventually could cause an electrical short circuit.

8403220164 840305 PDR ADOCK 05000443 S PDR hi

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. United States Nuclear Regulatory Commission March 5, 1984 Attention: Mr. Richard W. Starostecki, Director Page 2 Safety Implication The jamming Hof the contactor or the wiring short could have disabled the combination reversing starter, and prevented the connected motor from performing its safety function, for example, preventing a valve from opening

- or closing as required.

Corrective Action Gould is replacing all of _ the defective combination reversing motor starters. The new starters will use shorter screws to prevent damage to the contactor side and will reroute the wires and use a different type of wire to prevent damage to the wire insulation. These problems affected 324 Sizes 1 and' 2 starters for Unit I and about 40 Sizes 1 and 2 starters for Unit 2. The remaining Unit 2 starters have not been manufactured yet. We anticipate the replacement will be completed by the end of April at which time we will submit a final report on this item.

This letter is being filed pursuant to the interim reporting provision of 10CFR50.55(e)( 3) .

Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY V1/

John DeVincentis Project Manager cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555

William S. Jordan, III, Esquire Brentwood Board of Selectmen Harmon & Weiss RED Dalton Road 1725 I Street, N.W. Suite 506 Brentwood, New Hampshire 03833 Washington, DC 20006 Roy P. Lessy, Jr., Esquire Office of the Executive Legal Director Edward F. Meany

, U.S. Nuclear Regulatory Commission Designated Representative of Washingtca, DC 20555 the Town of Rye 155 Washington Road Robert A. Backus, Esquire Rye, NH 03870 116 Lowell Street P.O. Box 516 -

Calvin A. Canney Mancehster, NH 03105 City Manager City Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Department of the Attorney General Augusta, ME 04333 Dana Bisbee, Esquire Assistant Attorney General Mr. John B. Tanzer Office of the Attorney General Designated Representative of 208 State House Annex the Town of Hampton Concord, NH 03301 5 Morningside Drive Hampton, NH 03842 Anne Verge, Chairperson Board of Selectmen

-Roberta C. Pevear Town Hall Designated Representative of South Hampton, NH 03842 the Town of Hampton Falls Drinkwater Road Patrick J. McKeon Hampton Falls, NH 03844 Selectmen's Office 10 Central Road Mrs. Sandra Gavutis Rye, NH 03870 Designated Representative of the Town of Kensington Carole F. Kagan, Esq.

RFD 1 Atomic Safety and Licensing Board Panel East Kingston, NH 03827 U.S. Nuclear Regulatory Commission Jo Ann Shotwell, Esquire Assistant Attorney General Mr. Angie Machiros Environmental Protection Bureau Chairman of the Loard of Selectmen Department of the Attorney General Town of Newbury One Ashburton Place, 19th Floor Newbury, MA 019 20 Boston, MA 02108 Town Manager's Office Senator Gordon J. Humphrey Town Hall - Friend Street U.S. Senate Amesbury, Ma. 01913 Washington, DC 20510 (Attn: Tom Burack) Senator Gordon J.1:umphrey 1 Pillsbury Street Diana P. Randall- Concord, NH 03301 70 Collins Street (Attn: Herb Boynton)

SEabrook, NH 03874 Richard E. Sullivan, Ma yor Donald E. Chick City Hall Town Manager Newburyport, MA 01950 Town of Exeter 10 Front Street Exeter, NH 03833

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