Part 21 Reports: 2025
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| Log No. | Notifier | Description | Report Date | Event No. / Accession No. |
|---|---|---|---|---|
| 2025-22-01 | Tennessee Valley Authority | 10 CFR Part 21 Report – Final Evaluation of a Deviation or Failure to Comply Associated with a Contactor in the Unit 2 Reactor Core Isolation Cooling System | 04/01/2026 | ML26091A047 |
| 2025-22-00 | Tennessee Valley Authority | 10 CFR Part 21 Notification: Interim Report of a Deviation or Failure to Comply Associated with a Contactor in the Unit 2 Reactor Core Isolation Cooling System | 12/18/2025 | ML25352A186 |
| 2025-21-01 | Peach Bottom Atomic Power Station Units 2 & 3 | 10 CFR 21 Notification for Emergency Diesel Generator Cylinder Chrome Delamination – RE EN# 58091 | 01/15/2026 | ML26015A114 |
| 2025-21-00 | Peach Bottom Atomic Power Station Units 2 & 3 | 10 CFR 21 Notification for Emergency Diesel Generator Cylinder Chrome Delamination | 12/17/2025 | ML25352A029 |
| 2025-20-00 | Rosemount Nuclear Instruments, Inc. | Notification under 10 CFR Part 21 for Rosemount Model 3154 Pressure Transmitters with Select Wire Wound Resistor Lots | 11/25/2025 | ML25330A126 |
| 2025-19-00 | Engine Systems, Inc | Initial 10 CFR Part 21 Notification for a Power Driver Potentiometer with loose relay sockets, P/N ES150258 | 10/15/2025 | ML25317A676 |
| 2025-18-02 | Paragon Energy Solutions | 10 CFR Part 21 Notification: P21-10112025-FN Rev 0 - Positive Post Corrosion Failures in Stryten (formerly GNB) N&M Series Flooded Batteries Installed in 24VDC, 48VDC, 125VDC and 250VDC Station Battery Strings | 12/15/2025 | ML25350B492 |
| 2025-18-01 | Paragon Energy Solutions | 10 CFR Part 21 Interim Notification: P21-10112025-INT Rev 0 Potential Deviation related to Stryten (formally GNB) N&M Series Flooded Batteries Installed in 24VDC, 48VDC, 125VDC and 250VDC Station Battery Strings | 10/31/2025 | ML25317A768 |
| 2025-18-00 | Paragon Energy Solutions | 10 CFR Part 21 Initial Notification: P21-10112025-IN, Rev. 0 - Potential Deviation related to Stryten (formally GNB) N&M Series Flooded Batteries Installed in 24VDC, 48VDC, 125VDC and 250VDC Station Battery Strings | 10/11/2025 | ML25317A675 |
| 2025-17-00 | Hanna Cylinders | Notification of Potential Part 21 Regarding Solenoid Valve Assemblies Hanna Cylinders P/N: N606-00200-000 | 09/29/2025 | ML25317A658 |
| 2025-16-00 | DC Cook Nuclear Plant | Initial Report Notification Pursuant to 10 CFR Part 21.21 Concerning Thermal Overload of Voltage Regulators | 07/29/2025 | ML25211A162 |
| 2025-15-02 | Curtiss-Wright Nuclear Division | Final Part 21 Notification Report on CW Supplied Namco Limit Switches PN: EA700-80926, Date Code: 0425 | 11/20/2025 | ML25325A210 |
| 2025-15-01 | Curtiss-Wright Nuclear Division | Interim Notification Report for Potential Part 21 Update - Curtiss Wright (CW) supplied NAMCO Limit Switches PN: EA700-80926, Date Code: 0425 | 09/23/2025 | ML25272A241 |
| 2025-15-00 | Curtiss-Wright Nuclear Division | Interim Notification Report for Potential Part 21 - Curtiss Wright (CW) supplied NAMCO Limit Switches PN: EA700-80926, Date Code: 0425 | 07/25/2025 | ML25210A055 |
| 2025-14-00 | Ametek Magnetrol USA, LLC | Notification of Potential Defect - 10 CFR Part 21 - Magnetrol Displacer Level Switch A103F-3X-Y-MPG-TDM-SMD4DC | 07/02/2025 | ML25198A165 |
| 2025-13-01 | Tennessee Valley Authority | Final Report of a Deviation or Failure to Comply Associated with a Valve in the Unit 3 Diesel Generator Starting Air System | 09/16/2025 | ML25259A159 |
| 2025-13-00 | Tennessee Valley Authority | Interim Report of a Deviation or Failure to Comply Associated with a Valve in the Unit 3 Diesel Generator Starting Air System | 07/18/2025 | ML25199A064 |
| 2025-12-01 | Westinghouse Electric Co | Closure of Westinghouse 10 CFR Part 21 Interim Report Log No. 2025-12-00 | 09/29/2025 | ML25272A157 |
| 2025-12-00 | Westinghouse Electric Co | Interim Report of the Evaluation of a Deviation Pursuant to 10 CFR 21.21(a)(2) | 06/27/2025 | ML25179A009 |
| 2025-11-01 | Cooper Nuclear Station | 10 CFR Part 21 Report Regarding Diesel Generator Jacket Water pump | 07/15/2025 | ML25196A354 |
| 2025-11-00 | Cooper Nuclear Station | Part 21 Report – Diesel Generator Jacket Water Pump Failure | 06/20/2025 | ML25174A178 |
| 2025-10-00 | Framatome Inc. | Notification of 10 CFR 21 Defect Associated with Control Rod Drive Mechanism Thermal Sleeves | 06/11/2025 | ML25162A273 |
| 2025-09-01 | Framatome Inc. | 10 CFR 21 Notification of Existence of a Defect Associated with Circuit Breaker Model 5-3AF-GEU-350-1200 | 05/29/2025 | ML25155A034 |
| 2025-09-00 | Framatome Inc. | Interim Report of a Deviation Associated with Circuit Breaker Defect, Model 5-3AF-GEU-350-1200 | 05/22/2025 | ML26048A171 |
| 2025-08-01 | James A FitzPatrick Nuclear Power Plant | 10 CFR 21 Notification for GE Hitachi Molded Case Circuit Breakers Failed to Instantaneously Trip | 05/29/2025 | ML25149A233 |
| 2025-08-00 | James A FitzPatrick Nuclear Power Plant | Interim Report of a Deviation Associated with GE Hitachi Molded Case Circuit Breakers - Part number DD148C6151P004 (Asea Brown Boveri (ABB) part number: TB13030BWE05) | 05/08/2025 | ML25128A328 |
| 2025-07-01 | ASCO Valve, Inc (Emerson) | ASCO NP8321 Series Valves Do Not Shift or Partially Shift After Periods of Extended De-Energization | 07/11/2025 | ML25202A109 |
| 2025-07-00 | ASCO Valve, Inc (Emerson) | Interim Report of a Deviation Associated with ASCO NP8321 Series Valves | 04/24/2025 | ML25118A026 |
| 2025-06-01 | Curtiss-Wright Nuclear Division | Updated Interim Report of a Deviation Associated with GE Over/Under Voltage Time Delay Relay PN: 12|AV69A1A | 04/09/2025 | ML25100A099 |
| 2025-06-00 | Curtiss-Wright Nuclear Division | Interim Report of a Deviation Associated with GE Over/Under Voltage Time Delay Relay PN: 12|AV69A1A | 04/08/2025 | ML25099A160 |
| 2025-05-01 | Southern Nuclear Operating Company | Updated Interim Report of a Deviation Associated with an ETAP Software Error in Transient Stability Program | 04/24/2025 | ML25114A251 |
| 2025-05-00 | Southern Nuclear Operating Company | Interim Report of a Deviation Associated with an ETAP Software Error in Transient Stability Program | 03/26/2025 | ML25085A382 |
| 2025-04-01 | Curtiss-Wright Nuclear Division | Final Report of a Deviation Associated with Generation 3 QDCs Produced from Curtiss-Wright Middleburg Heights | 05/06/2025 | ML25127A255 |
| 2025-04-00 | Curtiss-Wright Nuclear Division | Interim Report of a Deviation Associated with Generation 3 QDCs Produced from Curtiss-Wright Middleburg Heights | 03/12/2025 | ML25072A045 |
| 2025-03-01 | Duke Energy, Inc. | Updated Interim Report of a Deviation Associated with Love Controllers Identified with Limpet Supplier Part Number 54-834-838-8187-8160-8134-8174 | 03/20/2025 | ML25079A082 |
| 2025-03-00 | Duke Energy, Inc. | Interim Report of a Deviation Associated with Love Controllers Identified with Limpet Supplier Part Number 54-834-838-8187-8160-8134-8174 | 02/19/2025 | ML25051A030 |
| 2025-02-01 | Prairie Island Nuclear Generating Plant | Closure of Interim Report of a Deviation Associated with an Edward Model 15004T5 2-inch Globe Valve | 02/28/2025 | ML25059A074 |
| 2025-02-00 | Prairie Island Nuclear Generating Plant | Interim Report of a Deviation Associated with an Edward Model 15004T5 2-inch Globe Valve | 01/24/2025 | ML25027A099 |
| 2025-01-01 | Flowserve US, Inc | Final Report of a Deviation Associated with Limitorque SMB-00 Torque Switch Assemblies | 02/14/2025 | ML25050A042 |
| 2025-01-00 | Flowserve US, Inc | Interim Report of a Deviation Associated with Limitorque SMB-00 Torque Switch Assemblies | 01/02/2025 | ML25006A165 |
Page Last Reviewed/Updated Tuesday, April 14, 2026
Page Last Reviewed/Updated Tuesday, April 14, 2026