ML20141A250

Part 21 Rept Re Two Broken Carrier Assemblies from NEMA Size 5 Contactor A103G12,preventing Proper Closing of Contactor. Breakage Believed Due to Dropping Device in Shipping Carton. Packaging Modified as of 860205

ML20141A250
Person / Time
Site:	Fermi
Issue date:	02/25/1986
From:	Erhardt J TELEMECANIQUE, INC.
To:	Finkel A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
REF-PT21-86-125-000 PT21-86-125, PT21-86-125-000, NUDOCS 8604040424
Download: ML20141A250 (2)

Text

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February 25, 1986 Q,%hp DUM (F3W 3 Lt-ft.

U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Attention: Mr. Alan Finkel, Reactor Engineering Plant Systems Section j

Subject:

Report Detailing Failure of Telemecanique NEMA Size S Contactor, Cat. #A103G12 l Pursuant to 10 CFR 21 Para. 21.21 (b).(3) l

Dear Mr. Finkel:

On January 16, 1986 the Rocketdyne Division of Rockwell International notified Telemecanique Inc. that during assembly performed by Rocket-  ;

dyne, two carrier assemblies from NEliA Size 5 Contactor #A103G12 had '

been found broken preventing proper closing of the contactor. This'  !

breakage was following a similar pattern as the one previously reported l by Rocketdyne in July 1985. At that time, Telemecanique could not find any particular reason for the breakage of the device.

Following the January report, mechanical and electrical testing by j

Telemecanique Inc. led to the conclusion that the breakage could only be duplicated by dropping the device in its shipping carton.

I Af ter modification of the packaging (addition of a cushioning material) l the breakage could not be duplicated.  :

As a result, packaging for all NEMA Size 5 contactors and starters has been modified, as of February 5,1986.

All equipment installed, or still in their shipping cartons at Rocketdyne, has been inspected.

Telemecanique Inc. has researched their shipment files for possible I, shipments of loose starters or contactors to nuclear sites. One ,

I shipment of three contactors Cat. #A103G12 to Detroit Edison, Fermi II,

has been identified and this company has beer notified. Telemecanique 8604040424 860225 PDR ADOCK 05000341 [

S PDR d0 TELEMECANIOUE INC.,2002 BETHEL ROAD, WESTMINSTER, MD (301)876-2214 ..

INVENTIVE SOLUTIONS TO CONTROL PP.OBLEMS g

I

[ ] Telemecanique U.S. Nuclear Regulatory Commission February 25, 1966 Page 2 Inc. requested return of the units for inspection if they have not been installed, or inspection by our Field Service Group if installation has been accomplished.

No further action than the above is planned by Telemecanique Inc.

Sincerely,

, (A.- ,

. V. Erhardt Vice President, Operations JVE/nd

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