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Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

Part 21 Reports: 2025

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Log No.

Notifier

Description

Report Date

Event No. / Accession No.

2025-16-01

DC Cook Nuclear Plant 

Part 21 30 Day Notification Associated with Emergency Diesel Generator (EDG) Voltage Regulator (VR) 

08/27/2025

ML25239A088

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

2025-15-00

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

2025-12-00

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 

EN 57729

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 Wednesday, October 01, 2025

Page Last Reviewed/Updated Wednesday, October 01, 2025