| | Site | Start date | Title | Description |
|---|
| IR 05000269/2024003 | Oconee | 31 October 2024 | Integrated Inspection Report 05000269/2024003 and 05000270/2024003 and 05000287/2024003 (2) | |
| ML24019A002 | 05200050 | 19 August 2024 | Sdaa Chapter 18, Human Factors Engineering, SE with No Open Items | |
| 05000382/LER-2024-004, Automatic Reactor Trip Due to Lightning Strike | Waterford | 15 August 2024 | Automatic Reactor Trip Due to Lightning Strike | |
| IR 05000395/2024002 | Summer | 12 August 2024 | Integrated Inspection Report 05000395/2024002 | |
| IR 05000443/2024002 | Seabrook | 6 August 2024 | Integrated Inspection Report 05000443/2024002 and Independent Spent Fuel Storage Installation Inspection Report 07200063/2024001 | |
| 05000287/LER-2024-001, Procedure Deficiency Results in Inadvertent Automatic Feedwater Isolation and Automatic Emergency Feedwater Actuation | Oconee | 2 August 2024 | Procedure Deficiency Results in Inadvertent Automatic Feedwater Isolation and Automatic Emergency Feedwater Actuation | |
| IR 05000269/2024002 | Oconee | 25 July 2024 | Integrated Inspection Report 05000269/2024002 and 05000270/2024002 and 05000287/2024002 | |
| 05000382/LER-2024-003, Automatic EFAS Actuation During Surveillance Test | Waterford | 10 July 2024 | Automatic EFAS Actuation During Surveillance Test | |
| 05000456/LER-2024-001, Trip on Low Steam Generator Level Ddue to Failure to Verify Isolation Valves Were Open | Braidwood | 3 July 2024 | Trip on Low Steam Generator Level Ddue to Failure to Verify Isolation Valves Were Open | |
| ENS 57159 | Oconee | 3 June 2024 04:51:00 | Automatic Actuation of Emergency Feedwater System | The following information was provided by the licensee via phone and email:
At 0051 EDT on June 3, 2024, with Unit 3 in Mode 3 at 0 percent power, an actuation of the emergency feedwater system (EFW) occurred as main steam pressure was being lowered as part of reactor coolant system (RCS) cooldown for a planned shutdown. The reason for the EFW auto-start was lowering levels in the 3A and 3B steam generators following loss of the operating main feedwater pump. The main feedwater pump automatically tripped when main steam pressure was lowered below the automatic feedwater isolation system (AFIS) actuation setpoint before AFIS channels were taken to bypass. The 3A and 3B motor driven emergency feedwater pumps automatically started as designed when the low steam generator level signal was received for the 3A and 3B steam generators.
This event is being reported in accordance with 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the EFW system.
There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. |