ENS Event | |
|---|---|
17:00 Sep 7, 2022 | |
| Title | Part 21 - Power Supply Failures |
| Event Description | The following information is a brief summary of the report provided by the licensee via fax:
Modicon Primary/Secondary Power Supply units that were supplied by United Controls International (UCI) to Dominion's Surry Power Station failed after installation. Hard failures that shutdown the associated programmable logic controller were observed. All units appeared to function properly at initial installation. When the subject items were returned to UCI for evaluation, substantial shipping damage was noted and can be attributed to poor shipping practices. Due to the complexity of the items, unavailability of design documentation, and noted shipping damage, further evaluation of item failures requires manufacturer evaluation and therefore additional time to complete the root cause evaluation. UCI continues to follow up with the manufacturer and plans to provide further evaluation by March 4, 2023. Plant affected: Surry Power Station For questions concerning this potential 10 CFR 21 issue, please contact: Anu Kulkarni Quality Assurance Director United Controls International (470) 610-0851 |
| Where | |
|---|---|
| United Controls International Norcross, Georgia (NRC Region 2) | |
| Organization: | United Controls International |
| Reporting | |
| 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
| Time - Person (Reporting Time:+2829.62 h117.901 days <br />16.843 weeks <br />3.876 months <br />) | |
| Opened: | Anu Kulkarni 15:37 Jan 3, 2023 |
| NRC Officer: | Brian P. Smith |
| Last Updated: | Jan 3, 2023 |
| 56293 - 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 | |