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)
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. |
| 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 | |
United Controls International with 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
WEEKMONTHYEARENS 562932022-09-07T17:00:0007 September 2022 17:00:00
[Table view]10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Power Supply Failures ENS 563882022-09-07T05:00:0007 September 2022 05:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Deviation to Qualified Design ENS 562092022-09-07T04:00:0007 September 2022 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Primary/Secondary Power Supply Failures ENS 512432015-06-03T04:00:0003 June 2015 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Potential Part 21 - Allen Bradley Failure to Document Design Change ENS 509352015-01-30T04:00:00030 January 2015 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part-21 Notification - Sense and Transfer Module Resistive Short ENS 503312014-06-04T04:00:0004 June 2014 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 Interim Report - Temperature Switch Set Points Out of Calibration ENS 500132014-03-25T04:00:00025 March 2014 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Potential Defect in General Electric Sb1 Switches and Hea Relays ENS 499402014-03-21T04:00:00021 March 2014 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Sbm Selector Switches Contact Assembly Unplanned Manufacturing Change 2022-09-07T05:00:00 | |