ML19341C083
| ML19341C083 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 12/31/1980 |
| From: | Novarro J LONG ISLAND LIGHTING CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML19341C082 | List: |
| References | |
| SNRC-525, NUDOCS 8102280608 | |
| Download: ML19341C083 (2) | |
Text
'
O LONG ISLAND LIGHTING COM PANY g U
- Mjayaue$h I rzasar
(
SHOREHAM NUCLEAR POWER STATION
- - d P.O. BOX 618. NORTH COUNTRY ROAD e WADING RIVER, N.Y.11792 SNRC-525 December 31, 1980 Mr. Boyce H.
Grier, Director Office of Inspection & Enforcement Region 1 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:
On July 24, 1980, we provided to you our 30-day written report on a deficiency with 24 volt D.C.
power supplies associated l
with Bailey Controls Company's Electronic Analog Instrumenta-l tion.
At that time we indicated that a follow-up letter would be submitted to document completion of the corrective action and steps to prevent recurrence.
This letter, therefore, serves to document the completion of all actions associated with this deficiency.
Corrective Action As reported in our original letter, six (6) defective capacitors I
were replaced in each of six (6) power supplies by a Bailey Con-trols Company representative during the week of July 14, 1980.
Four (4) additional capacitors, one in each of the four (4) re-maining affected power supplies, were replaced by their represent-ative during the week of October 13, 1980.
All ten (10) power sup-l plies were subsequently tested and found acceptable.
l On November 21, 1980, Bailey controls company reaffirmed, by letter to us, that the repaired equipment complies with the j
original design requirements.
i i
l i
I 8102280608 s'c-ens
\\.
Mr. Grier December 31, 1980 Page 2 Corrective Action to Prevent Recurrence The contamination of the capacitors, which resulted in their premature failure, was caused by a foam-in-place packaging pro-cess used by Bailey's power supply subvendor.
This deficiency was originally reported verbally to the NRC on November 3, 1978 and by letter on November 16, 1978, and was subsequently cor-rected by replacement of the power supplies.
The subvendor abandoned the foam-in-place packaging process to prevent recur-rence of the problem.
The second occurrence of this problem resulted from a loss of inventory control by the subvendor which allowed the shipping of power supplies previousIV contaminated by the foam as replace-ments for the originally defective units.
The director of Quality Assurance at Bailey Controls Company has now advised us that Bailey has subsequently instituted 100% inspection and testing of the capacitors in all power supplies received from that subvendor until such time as it would be certain that no such contaminated power supplies remain in the subvendor's in-
- ventory, Bailey also rejects any power supplies which are re-ceived with the foam packaging.
We trust that this response has satisfactorily addressed all out-standing items relative to this reportable deficiency.
Very truly yours, Te QU O
f J. P..Novarro Project Manager Shoreham Nuclear Power Station GKP/mt cc:
Mr. Victor Stello, Director NRC Office of Inspection and Enforcement Division of Reactor Operations Inspection Washington, D.C.
20555 Mr. J. Higgins, Site NRC Trailer
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