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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: 2024

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Log No.

Notifier

Description

Report Date

Event No. / Accession No.

2024-37-02

Ametek Solidstate Controls, Inc

Final Report of a Deviation Associated with Ametek Regulating Transformer Model 85-IS0150-14

08/20/2025

ML25238A018

2024-37-01   

Ametek Solidstate Controls, Inc

Interim Report of a Deviation Associated with Ametek Regulating Transformer Models 85-IS0075-12 and 85-IS0150-14

03/11/2025

ML25073A045

2024-37-00

Ametek Solidstate Controls, Inc

Interim Report of a Deviation Associated with Ametek Regulating Transformer Models 85-IS0075-12 and 85-IS0150-14

12/28/2024

ML24365A117

2024-36-01

FitzPatrick Nuclear Power Plant 

Closure of Interim Report of a Deviation Associated with General Electric Thermal Overload Relay, Model CR124G011, Part Number DD317A7861P003  

02/28/2025

ML25059A254

2024-36-00 

FitzPatrick Nuclear Power Plant 

Interim Report of a Deviation Associated with General Electric Thermal Overload Relay, Model CR124G011, Part Number DD317A7861P003 

11/22/2024

ML24330A242

2024-35-03

Valcor Engineering Corporation

Interim 10 CFR Part 21 Report Regarding Columbia Generating Station (CGS) - Part 21 Notification EN 57785

08/27/2025

ML25241A112

2024-35-02

Columbia Generating Station

Updated Report of a Deviation Associated with O-Rings for Solenoid Valves Pursuant to 10 CFR 21.21(d)(3)(ii)

07/17/2025

ML25198A329

2024-35-01

Columbia Generating Station

Part 21 - Valcor Solenoid Valve Defect Identified

06/26/2025

ML25178A801

2024-35-00

Columbia Generating Station 

Interim Report of a Deviation Associated with a Substitute Compound O-ring for Type V70900-45 Valves 

11/21/2024

ML24326A362

2024-34-01

Nextra Energy Seabrook, LLC

Final Report of a Deviation Associated with a GE Hitachi Relay CR120B (Model #DD945E118P0060) 

12/02/2024

ML24337A132

2024-34-00

Nextra Energy Seabrook, LLC

Interim Report of a Deviation Associated with a GE Hitachi Relay CR120B (Model #DD945E118P0060)

11/14/2024

ML24320A089

2024-33-03

Ametek Solidstate Controls, Inc

Updated Final Report of a Deviation Associated with a Battery Charger Printed Circuit Board, Ametek Part #80-9214031-90, with a Locator of X302, Capacitor’s C35 and C36 

03/13/2025

ML25073A045

2024-33-02

Ametek Solidstate Controls, Inc

Final Report of a Deviation Associated with a Battery Charger Printed Circuit Board, Ametek Part #80-9214031-90, with a Locator of X302, Capacitor’s C35 and C36

02/27/2025

ML25062A274

2024-33-01

Duke Energy Carolinas, LLC

Interim Report of a Deviation Associated with a Battery Charger Printed Circuit Board, Ametek Part #80-921-4031-9 

01/31/2025

ML25034A112

2024-33-00

Duke Energy Carolinas, LLC

Interim Report of a Deviation Associated with a Battery Charger Printed Circuit Board, Ametek Part#80-921-4031-9 

10/28/2024

ML24303A185

2024-32-01

North Anna Power Station 

Interim Report of a Deviation Associated with a Molded Case Switch, Model: Eaton J250K 

10/28/2024

ML24302A240 

2024-32-00

North Anna Power Station

Interim Report of a Deviation Associated with a Molded Case Switch, Model: Eaton J250K

10/09/2024

EN 57370

2024-31-00

MPR Associates, Inc

Interim Report of a Deviation Associated with Non-Compliant Contactors, Models AF80 and AF116

10/04/2024

ML24281A066

2024-30-01

NextEra Energy

Final Report of a Deviation Associated with a Westinghouse Relay, Model NBFD31S 

10/08/2024

ML24282A785

2024-30-00

NextEra Energy

Interim Report of a Deviation Associated with a Westinghouse Relay, Model NBFD31S

09/18/2024

ML24262A223

2024-29-00

Southern Nuclear Operating Co, Inc

Interim Report of a Deviation Associated with a ETAP Software Error in Transient Stability Program

09/09/2024

ML24253A170

2024-28-01

Diablo Canyon Power Plant

Interim Report of a Deviation Associated with ALCO Snubber Valve Assemblies Part Number 2402466

09/09/2024

ML24255A090

2024-28-00

Diablo Canyon Power Plant

Interim Report of a Deviation Associated with ALCO Snubber Valve Assemblies Part Number 2402466

08/15/2024

EN 57271

2024-27-01

Browns Ferry Nuclear Plant 

Retraction of Interim Report of a Deviation Associated with a Fike Metal Products 16-inch Rupture Disc, Part Number 16-CPV-C 

08/22/2024

EN 57245

2024-27-00

Browns Ferry Nuclear Plant 

Interim Report of a Deviation Associated with a Fike Metal Products 16-inch Rupture Disc, Part Number 16-CPV-C

07/25/2024

EN 57245

2024-26-11

RSCC Wire & Cable LLC

Part 21 Report - Non-Compliant Insulated Conductor - Update

09/09/2025

ML25253A315

2024-26-10

RSCC Wire & Cable LLC

Part 21 Report - Non-Compliant Insulated Conductor - Update

07/02/2025

EN 57243

2024-26-09

RSCC Wire & Cable LLC

Update to Retraction of Final Report of a Deviation Associated with a Non-compliant Insulated Conductor  

06/03/2025

ML25160A205 

2024-26-08

RSCC Wire & Cable LLC

Update to Retraction of Final Report of a Deviation Associated with a Non-compliant Insulated Conductor

05/06/2025

ML25126A150

2024-26-07

RSCC Wire & Cable LLC

Update to Retraction of Final Report of a Deviation Associated with a Non-compliant Insulated Conductor

03/28/2025

ML25097A281

2024-26-06

RSCC Wire & Cable LLC

Update to Retraction of Final Report of a Deviation Associated with a Non-compliant Insulated Conductor  

02/13/2025

ML25045A198

2024-26-05

RSCC Wire & Cable LLC

Update to Retraction of Final Report of a Deviation Associated with a Non-compliant Insulated Conductor 

10/28/2024

ML24302A277

2024-26-04

RSCC Wire & Cable LLC  

Update to Retraction of Final Report of a Deviation Associated with a Non-compliant Insulated Conductor

09/26/2024

ML24274A124

2024-26-03

RSCC Wire & Cable LLC

Update to Retraction of Final Report of a Deviation Associated with a Non-compliant Insulated Conductor

09/17/2024

ML24262A083

2024-26-02

RSCC Wire & Cable LLC

Retraction of Final Report of a Deviation Associated with a Non-compliant Insulated Conductor

09/06/2024

ML24255A864

2024-26-01

RSCC Wire & Cable LLC 

Final Report of a Deviation Associated with a Non-compliant Insulated Conductor

08/23/2024

ML24239A397 

2024-26-00

RSCC Wire & Cable LLC

Interim Report of a Deviation Associated with a Non-compliant Insulated Conductor

07/25/2024

ML24208A096

2024-25-02

Westinghouse Electric Co

Updated Interim Report of a Deviation Associated with Westinghouse-supplied Generation 2 and 3 CR-99 and Trident X Control Rod Blades

03/24/2025

ML25083A010

2024-25-01

Westinghouse Electric Co

Interim Report of a Deviation Associated with Westinghouse-supplied Generation 3 CR-99 and Trident X Control Rod Blades 

09/04/2024

ML24249A136

2024-25-00

Westinghouse Electric Co 

Interim Report of a Deviation Associated with Westinghouse-supplied Generation 3 CR-99 Control Rod Blades 

07/21/2024 

ML24203A001

2024-24-04

Tennessee Valley Authority

10 CFR 21 Notification -- Defect Associated with Anchor Darling Double-disc Gate Valve 

07/10/2025

ML25191A041

2024-24-03

Tennessee Valley Authority

PART 21 - Improper Upper Wedge-to-Stem Joint in a Commercially Sourced Double-Disc Gate Valve 

06/10/2025

EN 57751 

2024-24-02

Tennessee Valley Authority

Updated Report of a Deviation Associated with a Valve in the Unit 3 High Pressure Coolant Injection System 

11/27/2024

ML24332A037

2024-24-01

Tennessee Valley Authority

Updated Report of a Deviation Associated with a Valve in the Unit 3 High Pressure Coolant Injection System

08/22/2024 

ML24235A497

2024-24-00

Tennessee Valley Authority

Interim Report of a Deviation Associated with a Valve in the Unit 3 High Pressure Coolant Injection System

06/23/2024

ML24175A004

2024-23-00

Framatome

Part 21 Notification of a Deviation Associated with Burnable Poison Rod Assemblies

06/22/2024

ML24177A169

2024-22-00

Flowserve Corp

Interim Report of a Deviation Associated with a ½" 1878 Piston Check Valve with adjustable cracking pressure SN: 96CEE 

06/11/2024 

ML24170A863

2024-21-00

Diablo Canyon Power Plant, Units 1 and 2 

Interim Report of a Deviation Associated with Emergency Diesel Generator Fuel Snubber Valve Assembly 

05/28/2024 

ML24149A357

2024-20-01

Paragon Energy Solutions

Final Report of a Deviation Associated with an Emergency Diesel Generator Voltage Regulator

06/21/2024 

ML24176A101

2024-20-00

Paragon Energy Solutions

Interim Report of a Deviation Associated with an Emergency Diesel Generator Voltage Regulator

05/24/2024 

ML24149A160 

2024-19-00

TE Connectivity

Interim Report of a Deviation Associated with Non-compliant Material Used in the Potting of the Coils for E7000 Series Relays

04/23/2024

ML24128A237

2024-18-01 

Sequoyah Nuclear Plant 

Retraction of Interim Report of a Deviation or Failure to Comply – Transducer Model 8005N

06/24/2024

ML24176A022

2024-18-00

Sequoyah Nuclear Plant

Interim Report of a Deviation or Failure to Comply – Transducer Model 8005N

04/25/2024

ML24116A261

2024-17-00

Global Nuclear Fuel

Part 21 Final Report Notification: GNF3 Spacer Relocation

04/22/2024  

ML24113A202

2024-16-00

Farley Nuclear Plant

10 CFR Part 21 Report for Siemens Low Voltage AKW Circuit Breaker

04/15/2024

ML24106A162

2024-15-04  

Paragon Energy

Retraction of Interim Report of a Deviation Associated with a Potential Defect with Schneider Electric Medium Voltage VR Type Circuit Breaker Part Number V5D4133Y000

07/27/2024

ML24211A087

2024-15-03 

Paragon Energy Solutions

Interim Report of a Deviation Associated with a Potential Defect with Schneider Electric Medium Voltage VR Type Circuit Breaker Part Number V5D4133Y000

06/29/2024

ML24183A235

2024-15-02

Paragon Energy Solutions

Interim Report of a Deviation Associated with a Potential Defect with Schneider Electric Medium Voltage VR Type Circuit Breaker Part Number V5D4133Y000

05/31/2024

ML24155A091

2024-15-01

Paragon Energy Solutions

Interim Report of a Deviation Associated with a Potential Defect with Schneider Electric Medium Voltage VR Type Circuit Breaker Part Number V5D4133Y000

05/02/2024

ML24127A089

2024-15-00

Paragon Energy Solutions

Interim Report of a Deviation Associated with a Potential Defect with Schneider Electric Medium Voltage VR Type Circuit Breaker Part Number V5D4133Y000 

04/16/2024

ML24108A079

2024-14-00

Engine Systems Inc

Interim Report of a Deviation Associated with a Leaking Cylinder Liner in Emergency Diesel Generator

04/12/2024

ML24107A697

2024-13-00

Transco Products Inc

Interim Report of a Deviation Associated with Unverified Critical Characteristics of Darmatt KM-1 Flat Board

04/09/2024

ML24103A202

2024-12-00

Diablo Canyon Power Plant

10 CFR Part 21 Interim Report Regarding Mechanical Snubbers  

04/03/2024

ML24095A157

2024-11-00

Alpha-Omega Services, Inc

Interim Report of a Deviation Associated with Failure to Comply with Testing Requirements

03/18/2024

ML24086A017

2024-10-01

Cooper Nuclear Station

10 CFR Part 21 Report Regarding Service Water Booster Pump Bearing Housing Covers

03/27/2024

ML24087A214

2024-10-00

Cooper Nuclear Station 

Interim Report of a Deviation Associated with a Residual Heat Removal Service Water Booster Pump Bearing Housing Cover Oil Leak 

03/01/2024 

EN 57001

2024-09-00

Fairbanks Morse

Interim Report of a Deviation Associated with Synchro-Start Mini-Gen Signal Generator, Woodward Part Number (PN) SA-3176-D; Fairbanks Morse PN 16302997

02/25/2024

ML24057A338 

2024-08-00

Fairbanks Morse

Interim Report of a Deviation Associated with Air Start Valve ASCO Part Number (PN) X300529797001HN, Fairbanks Morse PN 11916969

02/25/2024

ML24057A337

2024-07-02 

Xcel Energy / Prairie Island Nuclear Generating Plant

Closure of Interim Report of a Deviation Associated with Bentley Systems Incorporated AutoPIPE Software

10/03/2024

ML24277A101

2024-07-01

Xcel Energy / Prairie Island Nuclear Generating Plant

Interim Report of a Potential Deviation or Failure to Comply Associated with Bentley Systems Incorporated AutoPIPE Software (Update)

04/09/2024

ML24101A063

2024-07-00

Xcel Energy / Prairie Island Nuclear Generating Plant 

Interim Report of a Deviation Associated with Bentley Systems Incorporated AutoPIPE Software

02/09/2024

ML24040A171

2024-06-01

Ametek Solidstate Controls

Final Report of a Deviation Associated with an Oil Filled Capacitors in Aluminum Case Part Number 07-020139-10

05/17/2024

ML24141A048

2024-06-00

Ametek Solidstate Controls

Interim Report of a Deviation Associated with an Oil Filled Capacitors in Aluminum Case Part Number 07-020139-10 

02/09/2024

ML24043A086

2024-05-00

VC Summer Nuclear Station

Interim Report of a Deviation Associated with Emergency Diesel Generator Fuel Oil Piping 

01/18/2024

ML24018A011

2024-04-01

VC Summer Nuclear Station

Interim Report of a Deviation Associated with a Manufacturing Defect Affecting a Control Power Circuit Monitor (CP1) Relay on its 'B' Emergency Diesel Generator

02/07/2024

ML24038A031

2024-04-00

VC Summer Nuclear Station

Interim Report of a Deviation Associated with a Manufacturing Defect Affecting a Control Power Circuit Monitor (CP1) Relay on its 'B' Emergency Diesel Generator 

01/10/2024

EN 56919

2024-03-01

VC Summer Nuclear Station

Interim Report of a Deviation Associated with a Manufacturing Defect Affecting a Field Flash Contactor (K2) relay on its 'B' Emergency Diesel Generator

02/07/2024

ML24038A032

2024-03-00

VC Summer Nuclear Station

Interim Report of a Deviation Associated with a Manufacturing Defect Affecting a Field Flash Contactor (K2) relay on its 'B' Emergency Diesel Generator 

01/10/2024

EN 56920

2024-02-01

Tennessee Valley Authority 

Final Report of a Deviation Associated with a Crompton Instruments Type 077 Ammeter  

02/22/2024

ML24053A393

2024-02-00

Tennessee Valley Authority 

Interim Report of a Deviation Associated with an Crompton Instruments Type 077 Ammeter

01/03/2024

ML24004A033

2024-01-01

Engine Systems, INC.

Interim Report of a Deviation Associated with an Electro-Motive Diesel (EMD) Cylinder Liner with Bore Deficiency, P/N 9318833 (component of power assembly P/N 40124897) 

01/17/2024

ML24018A014

2024-01-00

Engine Systems, INC.

Interim Report of a Deviation Associated with an Electro-Motive Diesel (EMD) Cylinder Liner with Bore Deficiency, P/N 9318833 (component of power assembly P/N 40124897), S/N 20M0938. 

01/04/2024

ML24008A069

Page Last Reviewed/Updated Tuesday, September 16, 2025

Page Last Reviewed/Updated Tuesday, September 16, 2025