ML20199M089

Part 21 Rept Re Failure of Square Root Converters.Caused by Failed Aluminum Electrolytic Capacitory Spargue Electric Co (Model Number TE1302 with Mfg Date Code 9322H).Sent Square Root Converters Back to Mfg,Barker Microfarads,Inc

ML20199M089
Person / Time
Site:	Dresden, Nine Mile Point, FitzPatrick
Issue date:	01/22/1999
From:	Brosemer J External (Affiliation Not Assigned)
To:	Mackinnon J NRC
References
REF-PT21-98 NUDOCS 9901280247
Download: ML20199M089 (1)

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OU24/1999 U.S. N: clear Reg:lat:ry C:mmission Operations Center Event Report P ge 1 Generalinfor[ nation or Other (PAR) , Event # 35304 Rep Org: INTEGRATED RESOURCES, INC. Notification Date / Time: 01/22/1999 15:20 (EST) l Supplier: BARKER MICORFARADAS, INC Event Date / Time: 01/22/199914:20 (CST)

Last Modification: 01/22/1999 Region: 4 Docket #:

City: Nebraska City Agreement State: Yes County: License #: i State: NE NRC Notified by: JOHN BROSEMER Notifications: DALE POWERS R4  !

H3 Ops Officer: JOHN MacKINNON FRANK COSTELLO R1 l Emergency Class: NON EMERGENCY ROGER LANKSBURY R3 10 CFR Section: VERN HODGE NRR j 21.21 UNSPECIFIED PARAGRAPH I

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PRELIMINARY NOTIFICATION BY INTEGRATED RESOURCES OF 10-CFR-PART-21 NOTIFICATION INTEGRATED RESOURCES, INC., CALLED TO MAKE A PRELIMINARY NOTIFICATION OF INTENT TO ISSUE A 10-CFR-PART-21 NOTIFICATION ON THEMSELVES. DRESDEN STATION SENT SQUARE ROOT CONVERTERS (DRESDEN STATION HAS ABOUT 100 OF THESE SQUARE ROOT CONVERTERS) TO INTEGRATED RESOURCES, INC., FOR FAILURE ANALYSIS BECAUSE AFTER ABOUT 5 YEARS OF USE, p/

THESE SQUARE ROOT CONVERTERS START TO FAIL. ALL THE SQUARE ROOT CONVERTERS ARE NON-SAFETY RELATED. NINE (9) OF THE SQUARE ROOT CONVERTERS WERE TESTED. FAILURE ANALYSIS DETERMINED THAT ALL FIVE (5) OF THE ALUMINUM ELECTROLYTIC CAPACITORY SPARGUE -f ELECTRIC CO. (MODEL #TE1302 WITH MANUFACTURE DATE CODE OF 9322H) FAILED. ALL THE OTHER ._B/ / '/

SQUARE ROOT CONVERTERS' FAILURE POINT IS WHERE THE SQUARE ROOT CONVERTER COULD NOT BE CAllBRATED PROPERLY. THE SQUARE ROOT CONVERTERS ARE BEING SENT BACK TO THEIR MANUFACTURER (BARKER MICROFARADS, INC., LOCATED IN HILLSVILLE, VA) TO DETERMINE THE FAILURE MECHANISM OF THE SQUARE ROOT CONVERTERS. INTEGRATE RESOURCES, INC., STATED THAT THEY EXPECTED THE RESULTS OF THE FAILURE MECHANISM OF THE SQUARE ROOT CONVERTS TO BE SENT TO THEM NEXT WEEK.

INTEGRATED RESOURCES, INC., SAID THAT NINE MILE POINT UNIT 1 HAS ONE SAFETY-RELATED SQUARE ROOT CONVERTER AND ONE SAFETY-RELATED FUNCTION GENERATOR AND THAT FITZPATRICK HAS TWO SAFETY-RELATED BASIC CONTROLLERS. THESE TWO NUCLEAR POWER PLANTS WILL BE NOTIFIED OF THE POTENTIAL FAILURE OF THESE DEVICES.

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