ML20002D072

Interim Deficiency Rept Re Use of Inferior Lubricant on 480V Nema Size 3 Contactors for Square D Motor Control Ctrs,Initially Reported on 801022.Factory Representative Will Repair 15 Contactors by Feb 1981

ML20002D072
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	11/20/1980
From:	Novarro J LONG ISLAND LIGHTING CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20002D068	List: ML20002D072
References
10CFR-050.55E, 10CFR-50.55E, SNRC-516, NUDOCS 8101190329
Download: ML20002D072 (2)

Text

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l b.-ico 4~- -a. aar r:ar SHORCHAM NUCt. EAR POWER STATION P.o. so x es s, homrw couwrmy mo AD . WADINO RtVC R. N.Y.11792 SNRC-516 November 20, 1980 Mr. Boyce H. Grier Office of Inspection and Enforcement, Region 1 s U.S. Nuclear Regulatory Comnission 631 Park Avenue King of Prussia, PA 19406 LONG ISLAND LIGHTING COMPANY SHOREHAM NUCLEAR POWER STATION - UNIT 1 DOCKET NO. 50-322

Dear Mr. Grier:

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On October 22, 1980, in accerdance with 10CFR50.55(e), we reported, verbally, to Region 1, a deficiency with 480V Nema Size 3 Contactors associated with Square D 480V motor control centers. This letter serves as our 30-day written report of this deficiency.

Description of Deficiency Some Nema Size 3 contactors manufactured during the period of July 1977 through December 1979 have, contrary to engineering standards,

, had a lubricant applied to the rubber " bumpers" which are attached to the movable starter armature. This lubricant can become tacky, causing the armature bumpers to stick to the inside of the con-tactor case. As a result of this, the contactor may not close when required.

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This deficiency was discovered by Square D and was reported to - ' . '

Stone t, Webster Engineering Corp. and LILCO under 10CFR21. A field survey of all Size 3 contactors found that fifteen (15) contactors fell within this date " window" and thus might have this defect.

One of the 15 was a Cat. II spare (installed) and ten (10) others were Cat. I spares. The remaining four (4) are utilized for motor-operated valves, lEll*MOV037A and 037B (two reversing starters),

in the Residual Heat Removal System, a Category I Application.

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Mr. Grier November 20, 1930 Page 2 Corrective Action Square D engineering has been notified and arrangements have been made to have a Square D factory representative come to our jobsite and repair all fifteen (15) contactors. We estimate completion of these repairs by February, 1981.

Corrective Action to Prevent Recurrence We have been advised that Square D factory engineering and Quality Assurance are fully aware of this problem and have instituted cor-rective action to insure that this misapplication of lubrication to contactor bumpers does not occur in the future.

Very ruly yours, f i \

l . OMM y/J. P. N /arro Project Manager Shoreham Nuclear Power Station TJS/mt cc: Mr. Victor Stello, Director NRC Office of Inspection and Enforcement

, Division of ".eactor Operations Inspection Washington, D.C. 20555 Mr. J. Higgins Site NRC Trailer

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