ENS 56209

v t e ENS Event
04:00 Sep 7, 2022
Title	Part 21 - Primary/Secondary Power Supply Failures
Event Description	The following is a summary of information provided by United Controls International (UCI) via email: On September 7, 2022, Dominion's Surry Power Station notified UCI that 3 Schneider Electric P/N: ASP840-000 Modicon Primary/Secondary Power Supply units failed to operate several days after installation at Dominion's Surry Power Station with hard failures that shutdown the associated [programmable logic controller]. The units were returned to UCI and initial observations indicated heavy shipping damage that was not present when initially supplied. Further evaluation of the damaged components requires manufacturer evaluation due to item complexity and proprietary design documentation. Investigation into the root cause(s) of the failures is ongoing. Evaluation of whether these failures represent deviations or failures to comply that would be associated with substantial safety hazards will be complete by January 3, 2023. Contact Information: Anu Kulkarni, Quality Assurance Manager United Controls International (700- 496-1406) * * UPDATE FROM ANU KULKARNI TO DONALD NORWOOD AT 1514 EST ON 11/14/22 * * * The letter date on the original transmittal letter from UCI to the USNRC was incorrectly listed as November 4, 2021. UCI is hereby submitting a corrected letter dated November 4, 2022. Notified R2DO (Miller) and Part 21 and 50.55 Reactors email group.

ENS 56209 +/-
Where
United Controls International Peachtree Corners, Georgia (NRC Region 1)
Organization:	United Controls International
Reporting

10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component
Time - Person (Reporting Time:+1403.25 h58.469 days <br />8.353 weeks <br />1.922 months <br />)
Opened:	Anu Kulkarni 15:15 Nov 4, 2022
NRC Officer:	Karen Cotton-Gross
Last Updated:	Nov 14, 2022
56209 - NRC Website
v • d • e

v t e Emergency Notification System
United Controls International with 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component
WEEKMONTHYEAR2022-09-07T05:00:00 [Table view]
[ENS list for United Controls International]

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