ML20062G099

Rept of Deficiency in Bailey Controls Pwr Supplies Installed in 10 Category I Appls,Principally HVAC Analog Instrumentation Control Loops.All Potentially Defective Pwr Supplies Will Be Replaced

ML20062G099
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	12/11/1978
From:	Novarro J LONG ISLAND LIGHTING CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
SNRC-343, NUDOCS 7812260211
Download: ML20062G099 (2)

Text

._ __ _ _. _ _ _ _ _ _ _ . . _ _ _ _ _ _ . _ _ _ _ , _ _ _ _ _

l _

~a ,

. . o l l t ,

1 l I

j December 11, 1978 SNRC-343 w.r. Boyce Grier, Director .

Office of Inspection & Enforcement '

i Region I l U.S.11uclear Regulatory Commission  ?

631 Park Avenua i King of Prussia, PA 19406 LOIG ISLAITD LICHTING COPPANY.

, Shoreham Nuclear Power Station - Unit 1

? Docket No. 50-322

Dear Mr. Grier:

On November 3, 1978, in accordance with 10CFR50.55(e), we noti-ficd Mr. A. Toth of the NRC that a deficiency existed in Sailey Controls power cumplies installed in ten Category I applications, orincipally HVAC analog instrumentation control loops. This letter serves as our 30-day written report for this deficiency.

DESCRIPTION OF THE DEFICIE!TCY Bailey Controls was advised by their pouer sunply vendor (ITT North Electric) that random premature failures of the power cun-j plies could occur due to contanination of a capacitor by the QV packaging material used by the vendor. The packaging material of concern is foamed-in-place urethane which may da= age the

capacitor's dielectric material.

I' A review of the part numbers supplied by Bailey (BCC Part Nos.

8080B02P008 through 3080B02P0012, inclusive) determined that i such power supplies were installed in ten Category I applica-tions. These applications are prheily IWAC analog instru-mentation control loops such as RBS3V, CRAC, etc. These syste=s j -

are important for post LOCA and off-site release control.

4

! CORRECTIVE ACTION 1

l All potentially defective power sunplies will be replaced.

I ;

Bailey Control's has notified us that replacement power supplies will be shipped to us in early December 1973.

(' ,

7 812 2 6 0 cR/l 4 5

' 96 l'-

-- _=

... s- -.

n j . . . _

s I

December 11, 1973 l Mr. Boyce Grier i Page 2 I

t CORRECTIVE ACTIO;I TO PREVENT RECURPI: ICE ,

1 j Bailey Controls, as well as their vendor (Trf North Electric),

are fully aware of this problem and will institute corrective  ;

action to insure that the packaging c:aterial utilized in the future will not adversely affect cor:ponent reliability.

i i DATE OF FULL COMPLIKiCE W estimate that all replacements of the affected power sun-plies will be cor:pleted by April 1,1979.  ;

Very truly yours, -  ;

l l

Origi.,a'. cier.ed i:y ,

NE 2. : 0c;JiRo J. P. Noverro Project Ma."arer Shoreham lindear Power Station GIT:jv l cc: Mr. John G. Davis, Director Office of Inocection & Enforeccent -

l

+

C' U.S. Nuclear Regulatory Comission Uashington, D.C. 20545 t

f bec: Dist. List 14 i C. A. Fonseca-I R. Bernard R. Hartswell  !

Eng. File /SR2...A21.200 ,

1 J

l L

1 D

1

?. .

i: -

a

_ - . , _ . , -