ENS 54758

v t e 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

ENS 54758 +/-
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
v • d • e

v t e Emergency Notification System
United Controls International with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect
WEEKMONTHYEAR2023-04-12T04:00:00 [Table view]
[ENS list for United Controls International]

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