ML19269C034
| ML19269C034 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 01/04/1979 |
| From: | Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Wofford A LONG ISLAND LIGHTING CO. |
| References | |
| NUDOCS 7901190226 | |
| Download: ML19269C034 (1) | |
Text
UNITED STATES 4
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4 979 Docket No. 50-322 Long Island Lighting Company ATTN: Mr. Andrew W. Wofford Vice President 175 East Old Country Road Hicksville, New York 11801 Gentlemen
Subject:
Bailey Controls Power Supplies (J. P. Novarro's letter of December 11,1978)
Thank you for the letter, referenced above, which forwarded a final report pursuant to 10 CFR 50.55(e) regarding the subject matter.
Your report will be reviewed and evaluated, and should we require addi-tional information concerning this matter, we will contact you.
Your cooperation with us is appreciated.
Sincerely, YW Robert T. Carlson, Chief Reactor Construction and Engineering Support Branch cc:
J. P. Novarro, Project Manager Edward M. Barrett, Esquire Edward J. Walsh, Esquire T. F. Gerecke, Manager, Engineering QA Department 7901190 %
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q LONG ISLAND LIGHTING COM PANY r JLd'O '
d a y m u s a,e SHOREHAM NUCLEAR POWER STATION P.O. BOX 618, NORTH COUNTRY ROAD + WADING RIVER. N.Y.11792
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December 11, 1978 SNRC-343 Mr. Bcyce Grier, Director Office of Inspection & Enforcement Region I U.S. Nuclear Regulatory Commission 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:
Or November 3, 1978, in accordance with 10CFR50.55(e), we noti-fied Mr. A. Toth of the NRC that a deficiency existed in Bailey Controls power supplies installed in ten Category I applications, principally HVAC analog instrumentation control loops.
This letter serves as our 30-day written report for this deficiency.
DESCRIPTION OF THE DEFICIENCY Bailey Controls was advised by their power supply vendor (ITT North Electric) that random premature failures of the power sup-plies could occur due to contamination of a capacitor by the packaging material used by the vendor.
The packaging material of concern is foamed-in-place urethane which may damage the capacitor's dielectric material.
A review of the part numbers supplied by Bailey (BCC Part Nos.
8080B02P008 through 8080B02P0012, inclusive) determined that such power supplies were installed in ten Category I applica-tions.
These applications are primarily HVAC analog instru-mentation control loops such as RBSBV, CRAC, etc.
These systems are important for post LOCA and off-site release control.
CORRECTIVE ACTION All potentially defective power supplies will be replaced.
Bailey Controls has notified us that replacement power supplies will be shipped to us in early December 1978.
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vecember ll, 1978 Mr. Boyce Grier Page 2 CORRECTIVE ACTION TO PREVENT RECURRENCE Bailey Controls, as well as their vendor (ITT North Electric),
are fully aware of this problem and will institute corrective action to insure that the nackaging material utilized in the future willnot adversely a'ffect component reliability.
DATE OF FULL COMPLIANCE We estimate that all replacements of the affected power sup-plies will be completed by April 1, 1979.
Very truly yours, 1
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J. P. Novarro Proj ect Manager Shoreham Nuclear Power Station GKP :j v cc:
Mr. John G. Davis,.
Otor Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20545