ML20062G099
| 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 t
1 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 King of Prussia, PA 19406 i
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 Q
packaging material used by the vendor.
The packaging material V
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 such power supplies were installed in ten Category I applica-i 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.
Bailey Control's has notified us that replacement power supplies I ;
will be shipped to us in early December 1973.
('
96 7 812 2 6 0 cR/l 4 5 l'-
-- _=
s-
n j
s I
December 11, 1973 l
Mr. Boyce Grier Page 2 i
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 N E
- 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,
1 L
D 1
?.
i:
a
-