ML19326B542
| ML19326B542 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/31/1973 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19326B538 | List: |
| References | |
| NUDOCS 8004160332 | |
| Download: ML19326B542 (2) | |
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a ATTACHMENT Q
Letter Phillips to Knuth October 31, 1973 STATION INVERTER MALFUNCTION Description of Incident On Friday, September 28, 1973, during the early A.M. hours an inverter malfunctioned due to a power wire burning open at the " crimp type" lug. The inverter switched to the alternate source with no interruption of output power.
Subsequent investigation on September 28, 1973, revealed that-numerous internal power lead wires were loosely crimped in this inverter as wall as the other five inverters which includes one spare. It was then evident that this was a warranty failure and the other inverters had potential possibilities of failure.
Safety Implications This incident occured during the pre-operational testing phase of the plant prior to fuel load. Consequently, neither the safety of the public nor tha'.: of plant personnel was compromised in any manner. As noted above, the inverter automatically switched to the alternate power source following the malfunction and there was no interruption in output s
power.
Corrective Action Taken A representative of the manufacturer (Solid State Controls, Inc.)
was sent to the field to investigate the problem and supervise repair work. All internal power lead " crimp type" lugs were examined and re-placement lugs were applied as required.
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