ENS Event | |
|---|---|
04:00 May 1, 2020 | |
| Title | Part 21 - Abb/Thomas & Betts/Cyberex Printed Circuit Board Shorts to Ground When Installed in Host Battery Charger |
| Event Description | The following is a summary of information received from United Controls International:
On May 1, 2020, Peach Bottom Atomic Power Station notified United Controls International (UCI) that a printed circuit board (PCB) in a station battery charger was shorting to ground. UCI has determined that an energized trace was too close to the mounting screw/washer causing the short. The trace was too close because the mounting holes were modified at the time of installation prior to commercial grade dedication. The modification was not documented. However, this modification was made to subsequent Time Delay Oscillator PCBs. UCI has determined that in this application the energized trace is not used and can be removed from the board without affecting the function. The subject boards should be returned to UCI for this additional modification. UCI will remove the trace and inspect to ensure sufficient clearance exists. The component is used in ABB/Thomas & Betts/Cyberex P/N: 93-41-119385. The subject board was supplied to Peach Bottom Generating Station in May, 2009. CONTACT: Wesley Hickle Engineering Manager whickle@unitedcontrols.com 770-496-1406 x 165 |
| Where | |
|---|---|
| United Controls International Norcross, Georgia (NRC Region 1) | |
| Organization: | United Controls International |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+1424.07 h59.336 days <br />8.477 weeks <br />1.951 months <br />) | |
| Opened: | Rob Hale 12:04 Jun 29, 2020 |
| NRC Officer: | Thomas Herrity |
| Last Updated: | Jun 29, 2020 |
| 54758 - NRC Website | |
United Controls International with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 564692023-04-12T04:00:00012 April 2023 04:00:00
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