| | Site | Start date | Title | Description |
|---|
| 05000317/LER-2025-001-01, Control Room Loss of Ventilation Due to Smoke Detector Failure Causing Common Supply Damper to Shut | Calvert Cliffs | 19 November 2025 | Control Room Loss of Ventilation Due to Smoke Detector Failure Causing Common Supply Damper to Shut | |
| ML25322A305 | Grand Gulf
Arkansas Nuclear
River Bend
Waterford | 18 November 2025 | Entergy Fleet - Request for Additional Information - TSTF -596 LAR (L-2025-LLA-0077) | |
| ENS 58042 | Sequoyah | 17 November 2025 14:11:00 | Control Room Emergency Ventilation System Inoperable | The following information was provided by the licensee via phone and email:
At 0911 EST, on 11/17/2025, it was discovered that both trains of the control room emergency ventilation system were simultaneously inoperable due to an unauthorized door breach of a door in the control room envelope; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). At 0913 EST, the door was closed, and both trains of the control room emergency ventilation system were restored to operable.
There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. |
| ML25303A305 | Kemmerer | 6 November 2025 | Chapter 6 - Us NRC Draft Safety Evaluation Related to the U.S. Sfr Owner, LLC Construction Permit Application for the Kemmerer Power Station Unit 1 | |
| L-2025-170, Fleet License Amendment Request 25-01, Adopt Topical Report AMS-TR-0720R2-A. Online Monitoring Program | Saint Lucie
Point Beach
Seabrook
Turkey Point | 29 October 2025 | Fleet License Amendment Request 25-01, Adopt Topical Report AMS-TR-0720R2-A. Online Monitoring Program | |
| ENS 58007 | Waterford | 26 October 2025 05:40:00 | Control Room Envelope Inoperable | The following information was provided by the licensee via phone and email:
On October 26, 2025, at 0040 CDT, the Waterford 3 Steam Electric Unit 3 operating crew declared the control room envelope inoperable in accordance with technical specification (TS) 3.7.6.1 due to the discovery of a hairline crack in the station air supply header in the passageway outside the control room.
Operations entered TS 3.7.6.1 action b. TS 3.7.6.1 action b was complied with by closing manual valves SA-502 and SA-514, thus isolating the section of piping that developed the crack. The station air leak was isolated at time 0120. There was no impact on the health and safety of the plant or plant personnel.
This event is reportable pursuant to 10 CFR 50.72(b)(3)(v)(D), event or condition that could have prevented fulfillment of a safety function of structures or systems that are needed to `(D) mitigate the consequences of an accident,' due to the control room envelope being inoperable.
The licensee notified the NRC Resident Inspector. |
| LR-N25-0083, Supplement to License Amendment Requests to Adopt TSTF-505, TSTF-591, and 10 CFR 50.69 | Salem | 10 October 2025 | Supplement to License Amendment Requests to Adopt TSTF-505, TSTF-591, and 10 CFR 50.69 | |
| L-2025-142, Technical Requirements Manual (Trm), Revision 1 | Turkey Point | 6 October 2025 | Technical Requirements Manual (Trm), Revision 1 | |
| ML25275A565 | Calvert Cliffs | 2 October 2025 | License Amendment Request - Proposed Change to Technical Specification 3.8.1 Action D.3 to Extend the Offsite Circuit Inoperable Completion Time on a One-Time Basis | |
| RA-18-0089, Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors | Catawba | 30 September 2025 | Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors | |