ENS Event | |
|---|---|
05:00 Feb 19, 2025 | |
| Title | Part 21 - EDG Room Ventilation Fan Controller Failure |
| Event Description | The following information was provided by the licensee via phone or email:
Catawba Nuclear Station has determined that a defect associated with Love Controllers identified with Limpet supplier part number 54-834-838-8187-8160-8134-8174 is reportable under 10 CFR Part 21. The subject parts were procured as commercial grade items and dedicated by Duke Energy, Inc., solely for use at Catawba Nuclear Station. Manufacturer circuit board workmanship issues associated with the Love controller resulted in a failed controller installed in Catawba's 2A1 emergency diesel generator room ventilation train and resulted in Catawba submitting licensee event report 2024-001-00. The loss of one emergency diesel room ventilation fan, under certain conditions, could cause a loss of safety function at elevated outside air temperatures and could result in a substantial safety hazard. All other Love controllers installed and in Duke Energy's warehouse were subsequently inspected for similar workmanship issues [with no issues found]. The NRC Senior Resident Inspector has been notified. No other nuclear plants were affected as the part has not been sold or transferred to another facility. Notified by: Scott Milton Nuclear Support Services Manager Catawba Nuclear Station Desk: 803-701-3488 |
| Where | |
|---|---|
Catawba  South Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+5.83 h0.243 days <br />0.0347 weeks <br />0.00799 months <br />) | |
| Opened: | Scott Milton 10:50 Feb 19, 2025 |
| NRC Officer: | Jordan Wingate |
| Last Updated: | Feb 19, 2025 |
| 57560 - NRC Website
Loading map... | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 575602025-02-19T05:00:00019 February 2025 05:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - EDG Room Ventilation Fan Controller Failure ENS 494262013-10-10T19:19:00010 October 2013 19:19:00 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Incomplete Brazing of Contacts for Diesel Generator Control Relay 2025-02-19T05:00:00 | |