Part 21 Reports

subscribe to page updates
2000s: | 2024202320222021 | 2020 |
  | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 |
  | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
1990s: | 1999 | 1998 | 1997 | 1996 | 1995 |

The U.S. Nuclear Regulatory Commission (NRC) receives reports from its licensees under Part 21 of Title 10 of the Code of Federal Regulations. This regulation specifies the conditions under which information must be submitted when a licensed facility, activity, or basic component fails to comply with the Atomic Energy Act of 1954, as amended, or other NRC regulations.

As of November 27, 2018, a web page listing 50.73 Licensee Event Reports that may report Defects and Noncompliance (in lieu of Part 21) is being provided for information purposes only. It is important to note that the information contained in these Licensee Event Reports is provided by the licensee, and has not been verified by the NRC to actually constitute a defect as described in 10 CFR Part 21. The NRC initially introduced the practice of linking Licensee Event Reports that may report Defects and Noncompliance to the Part 21 Reports page of the NRC public website in Information Notice 2011-19 "Licensee Event Reports Containing Information Pertaining to Defects to Basic Components."

Recently Updated Reports

This page includes links to files in non-HTML format. See Plugins, Viewers, and Other Tools for more information.

Log No. Notifier Description Report Date Event No. / Accession No.
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
2024-02-01 Tennessee Valley Authority  Final Report of a Deviation Associated with a Crompton Instruments Type 077 Ammeter   02/22/2024 ML24053A393
2023-31-01 Tennessee Valley Authority  Final Report of a Deviation Associated with a Lube Oil Scavenging and Fuel Oil Engine Driven Pump  02/14/2024 ML24046A025
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
2024-06-00 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
2024-04-01 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
2024-03-01 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
2023-26-02 Tioga Pipe, Inc Final Report of a Deviation Associated with Buttweld 90 Degree Elbows 02/02/2024 ML24037A020
2023-27-01 TVA (Tennessee Valley Authority) Final Report of a Deviation Associated with Starter Contactors for the BFN Unit 1 High Pressure Coolant Injection Suppression Pool Inboard Suction Valve  02/01/2024 ML24032A476
2023-24-01 Tennessee Valley Authority Final Report of a Deviation or Failure to Comply Associated with a Relay in the Unit 2 Reactor Core Isolation Cooling Condensate Pump  01/23/2024 ML24023A280
2024-05-00 VC Summer Nuclear Station Interim Report of a Deviation Associated with Emergency Diesel Generator Fuel Oil Piping  01/18/2024 ML24018A011
2024-01-01 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
2023-28-01 Paragon Energy Solutions Final Report of a Deviation Associated with Detroit Diesel/MTU Fuel Injectors PN R5229660 Cat ID# 0001390618  01/17/2024 ML24018A036
2023-20-02 Browns Ferry Nuclear Plant Final Report of a Deviation Associated with a Deviation or Failure to Comply Associated with Check Valve 0-CKV-023-0565 for D1 Residual Heat Removal Service Water Pump   01/16/2024 ML24016A304
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
2024-03-00 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
2024-01-00 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
2024-02-00 Tennessee Valley Authority  Interim Report of a Deviation Associated with an Crompton Instruments Type 077 Ammeter 01/03/2024 ML24004A033
2023-31-00 Tennessee Valley Authority Interim Report of a Deviation Associated with an Lube Oil Scavenging and Fuel Oil Engine Driven Pump  12/28/2023 ML24002A711
2023-30-00 Valcor Engineering Corporation Interim Report of a Defect Associated with Valcor Solenoid Valves V52600-5890-1 12/22/2023 ML23363A146
2023-29-00 VC Summer Interim Report of a Deviation Associated with the Design of an Emergency Diesel Generator Fuel Oil Piping System 12/21/2023 EN 56905
2023-28-00 Paragon Energy Solutions Interim Report of a Deviation Associated with Detroit Diesel/MTU Fuel Injectors PN R5229660 Cat ID# 0001390618  12/19/2023 ML23354A094
2022-15-01 SNC (Southern Nuclear Operating Company) Final Report of a Deviation Associated with Framatome Supplied Siemens Medium Voltage Circuit Breakers  12/15/2023 ML23349A115
2023-27-00 TVA (Tennessee Valley Authority)  Interim Report of a Deviation Associated with Starter Contactors for the BFN Unit 1 High Pressure Coolant Injection Suppression Pool Inboard Suction Valve  12/14/2023 ML23348A394
2023-25-01 Sequoyah Final Report of a Deviation Associated with Siemens 6.9kV, 1200A Vacuum Circuit Breaker Defects  01/10/2024 ML24010A213
2023-25-00 Sequoyah Interim Report of a Deviation Associated Siemens 6.9kV, 1200A Vacuum Circuit Breaker Defects  12/13/2023 EN 56888
2023-26-01 Flowline Inc. Interim Report of a Deviation Associated with Buttweld 90 Degree Elbows 12/12/2023 ML24004A209
2023-26-00 Tioga Interim Report of a Deviation Associated with Buttweld 90 Degree Elbows  12/08/2023 ML23352A238
2023-23-01 Enertech Final Report of a Deviation Associated with P/N D2060S Potentiometer  12/07/2023 ML23352A246
2023-24-00 Tennessee Valley Authority Interim Report of a Deviation or Failure to Comply Associated with a Relay in the Unit 2 Reactor Core Isolation Cooling Condensate Pump 12/01/2023 ML23335A072
2023-19-01 Flowserve Limitorque Actuators  Final Report of a Deviation Associated with a SMB-1 Geared Limit Switch Assembly 11/17/2023 ML23324A377
2023-20-01 Browns Ferry Nuclear Plant  Interim Report of a Deviation Associated with a Deviation or Failure to Comply Associated with Check Valve 0-CKV-023-0565 for D1 Residual Heat Removal Service Water Pump 11/16/2023 ML23320A254
2023-22-02 MISTRAS Group, Inc Final Report Notification Pursuant to 10 CFR Part 21.21, Regarding a Deviation in the Calibration Certificates for An Acoustic Emission Instrument 11/10/2023 ML23317A291
2023-21-01 DC Cook Nuclear Plant Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding an issue with an Emergency Diesel Generator (EDG) Digital Reference Unit (DRU) supplied by Engine Systems Incorporated 11/08/2023 ML23312A231
2023-23-00 Enertech Interim Report of a Deviation Associated with P/N D2060S Potentiometer 10/27/2023 ML23306A072
2023-22-01 MISTRAS Group, Inc Deviation in the Calibration Certificates for An Acoustic Emission Instrument 10/31/2023 EN 56808
2022-20-01 Grand Gulf Primary Containment Outer Airlock Door Inoperable Due to Unacceptable Leak Rate 11/30/2022 ML22334A222
2023-22-00 MISTRAS Group, Inc Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding a Deviation in the Calibration Certificates for an Acoustic Emission Instrument 10/20/2023 ML23296A086
2023-21-00 DC Cook Nuclear Plant Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding an issue with an Emergency Diesel Generator (EDG) Digital Reference Unit (DRU) supplied by Engine Systems Incorporated 10/12/2023 EN 56789
2023-20-00 Browns Ferry Nuclear Plant Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding a Deviation or Failure to Comply Associated with Check Valve 0-CKV-023-0565 for D1 Residual Heat Removal Service Water Pump 10/06/2023 ML23282A002
2023-19-00 Flowserve Limitorque Actuators Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding a Deviation Associated With a SMB-1 Geared Limit Switch Assembly 09/28/2023 ML23276A641
2023-18-01 Paragon Energy Solutions Final Report Notification Pursuant to 10 CFR Part 21.21, Regarding Potential Defect with Eaton JD and HJD Series Molded Case Circuit Breakers 10/05/2023 ML23279A061
2023-18-00 Paragon Energy Solutions Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Potential Defect with Eaton JD and HJD Series Molded Case Circuit Breakers 09/06/2023 ML23254A024
2023-16-01 Cooper Nuclear Station Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Certain GE-Hitachi HGA Relays 09/06/2023 ML23249A112
2023-14-01 GE Hitachi Nuclear Energy Part 21 Final Report Notification: Failure of the CRD Collet Retainer Tube/Outer Tube Weld 07/27/2023 ML23207A198
2023-14-00 GE Hitachi Nuclear Energy Updated - Part 21 60-Day Interim Report Notification: Failure of the CRD Collet Retainer Tube/Outer Tube Weld 08/31/2023 ML23243B004
2023-15-01 Paragon Energy Solutions Final Report Notification Pursuant to 10 CFR Part 21.21, Regarding Defect with Eaton/Cutler Hammer Size 4 and 5 Freedom Series Contactors 08/25/2023 ML23241A002
2023-13-01 River Bend Station Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Motor Driven Relay Failed Testing 08/24/2023 ML23236A246
2023-17-01 Curtis-Wright Nuclear Division

Final Report Notification Pursuant to 10 CFR Part 21.21, Regarding Tyco (Agastat) Relay Failures

10/05/2023 ML23293A051
2023-17-00 Curtis-Wright Nuclear Division Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Tyco (Agastat) Relay Failures 08/17/2023 ML23233A169
2023-16-00 Cooper Nuclear Station Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Certain GE-Hitachi HGA Relays 08/15/2023
 
EN 56679
2023-15-00 Paragon Energy Solutions Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Defect with Eaton/Cutler Hammer Size 4 and 5 Freedom Series Contactors 08/03/2023 ML23221A370
2023-12-01 Summer 10 CFR Part 21 Report Emergency Feedwater Check Valve Socket Head Capscrew 07/31/2023 ML23212A954
2023-13-00 River Bend Station Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Motor Driven Relay Failed Testing 07/26/2023 EN 56641
2023-10-01 Paragon Energy Solutions Retraction of Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Potential Defect with Trane External Auto/Stop and Emergency Stop Relay Card PN: X13650728-06 07/14/2023 ML23207A076
2023-12-00 Summer Initial Report Notification Pursuant to 10 CFR Part 21.21, Regarding Cap Screw Improper Length 07/07/2023 EN 56612
2023-11-00 Engine Systems, INC Initial Report Notification Pursuant to 10 CFR Part 21.21, Regarding Voltage Regulator Chassis – Bus Bar Installation 06/30/2023 ML23192A062
2023-09-01 DTE Electric Company, Fermi 2 Final Report Notification Pursuant to 10 CFR Part 21.21, Regarding Mechanical Draft Cooling Tower Fan Brakes Design Flaw 06/23/2023 ML23177A043
2023-10-00 Paragon Energy Solutions Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Potential Defect with Trane External Auto/Stop and Emergency Stop Relay Card PN: X13650728-06 06/05/2023 ML23159A005
2023-09-00 DTE Electric Company, Fermi 2 Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Mechanical Draft Cooling Tower Fan Brakes Design Flaw 05/26/2023 ML23159A004
2023-08-00 Engine Systems, INC Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Woodward EGB-35P Governor 05/24/2023 ML23146A001
2023-07-00 Flowserve Limitorque Actuators Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Limitorque Actuator Motor Pinion Installation 05/19/2023 ML23142A174
2023-01-02 Sequoyah Nuclear Plant Retraction of Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Deviation or Failure to Comply Associated with a Limitorque Actuator 05/04/2023 ML23124A018
2023-06-00 Tennessee Valley Authority Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Deviation or Failure to Comply Associated with a GE HFA Relay 05/01/2023 ML23121A325
2022-23-03 United Controls International Final Report Notification Pursuant To 10 CFR Part 21.21, Regarding Schneider Electric P/N ASP840-000 Modicon Primary/Secondary Power Supply Failures 04/14/2023 ML23108A083
2023-05-00 Framatome Inc. Initial Report Notification Pursuant to 10 CFR Part 21.21, Regarding DS-206DC/416/632/II-516 Breakers – Erroneous Change of State (Eaton Corporation Breakers) 04/07/2023 ML23100A107
2023-03-01 Paragon Energy Solutions Final Report Notification Pursuant to 10 CFR Part 21.21 Defect identified in Automatic Transfer Switch PN: NLI-ATS480A400X1 03/31/2023 ML23094A137
2022-28-02 Velan Inc Final Report Notification Pursuant To 10 CFR Part 21.21, Regarding 14NPS Class 150 Triple Offset Butterfly Valve - Model W19-0CP13-KCDN-B0001 03/07/2023 ML23066A221
2023-04-00 Trillium Flow Technologies Initial Report Notification Pursuant to 10 CFR Part 21.21 Regarding Inconsistent Crimping of Motor Leads to Ring Terminal Connectors - Evaluation I211003 03/06/2023 ML23082A112
2023-03-00 Paragon Energy Solutions Initial Report Notification Pursuant to 10 CFR Part 21.21 Defect identified in Automatic Transfer Switch PN: NLI-ATS480A400X1 03/06/2023 ML23065A196
2022-26-02 Flowserve-Limitorque Final Notification of Potential Part 21 on Peerless 56 frame DC Motors 03/03/2023 ML23065A200
2022-23-02 United Controls International Interim Report Notification Pursuant To 10 CFR Part 21.21, Regarding Schneider Electric P/N ASP840-000 Modicon Primary/Secondary Power Supply Failures 03/03/2023 ML23065A193
2023-01-01 Sequoyah Nuclear Plant Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Deviation or Failure to Comply Associated with a Limitorque Actuator 03/01/2023 ML23060A041
2022-25-01 QualTech NP, Curtiss-Wright Nuclear Division Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Eaton TRM5 Timing Relays 02/06/2023 ML23038A019
2022-26-01 Flowserve-Limitorque Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Peerless 56 Frame DC Motors 01/27/2023 ML23030A664
2023-02-00 Sequoyah Nuclear Plant Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Siemens Medium Voltage Circuit Breakers 01/25/2023 ML23025A253
2023-01-00 Sequoyah Nuclear Plant Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Deviation or Failure to Comply Associated with a Limitorque Actuator 01/24/2023 ML23024A029
2022-28-01 Velan Inc Interim Report Notification Pursuant To 10 CFR Part 21.21, Regarding 14NPS Class 150 Triple Offset Butterfly Valve - Model W19-0CP13-KCDN-B0001 01/19/2023 ML23023A036
2022-27-01 Wolf Creek Nuclear Operating Corporation Interim Notification Pursuant To 10 CFR Part 21.21, Regarding Main Steam Isolation Valves (MSIVs ) (Valve Type PPS-A 700) and Main Feedwater Isolation Valves (MFIVs) (Valve Type PPS-A 300) Torque Values 01/11/2023 ML23011A062
2022-23-01 United Controls International Interim Report Notification Pursuant To 10 CFR Part 21.21, Regarding Schneider Electric P/N ASP840-000 Modicon Primary/Secondary Power Supply Failures 01/03/2023 ML23004A091
2022-28-00 Velan Inc Interim Report Notification Pursuant To 10 CFR Part 21.21, Regarding 14NPS Class 150 Triple Offset Butterfly Valve 12/21/2022 ML22356A058
2022-09-03 Curtiss-Wright Nuclear Division Updated Report Notification Pursuant To 10 CFR Part 21.21, Regarding Potential Defect in Configuration of Quick Disconnect Connector Cable Assemblies 12/16/2022 ML22356A051
2022-27-00 Wolf Creek Nuclear Operating Corporation Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Inadequate Torque Values 12/12/2022 EN 56269
2022-26-00 Flowserve-Limitorque Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Peerless 56 Frame DC Motors 12/01/2022 ML22342B140
2022-25-00 Curtiss-Wright Nuclear Division Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding QualTech NP Supplied Eaton TRM5 Timing Relays 11/30/2022 ML22341A032
2022-17-01 Global Nuclear Fuel Final Report Notification Pursuant to 10 CFR Part 21.21, Regarding GNF3 Raised Water Rod (SC-22-04 Revision 2) 11/30/2022 ML22334A267
2022-24-00 Flowserve Corporation 10 CFR Part 21 Report 38878-8 Solenoid Valve at Duke, Catawba Flowserve Evaluation #105 11/10/2022 ML22319A094
2022-23-00 United Controls International Notification under 10 CFR Part 21 for Schneider Electric P/N: ASP840-000 Modicon Primary/Secondary Power Supply 11/04/2022 ML22314A013
2022-21-00 Nutherm International, Inc NRC 10 CFR Part 21 Notification, Nutherm, written notification of potential defect found in Nutherm/Sola Hevi-Duty Uninterruptible Power Supply (UPS), S4K2U1000-NM 191 11/01/2022 ML22307A019
2022-19-00 Emerson Automation Solutions / Rosemount Nuclear Instruments, Inc Notification under 10 CFR Part 21 for Rosemount 3153N Series Pressure Transmitter with Rosemount 3159 Remote Seals with the LG1 option 11/01/2022 ML22307A020
2022-22-00 Fairbanks Morse Basic Component Which Fails to Comply or Contains a Defect (Woodward 2301A Emergency Diesel Generator Electronic Speed Control Module 10/31/2022 ML22307A060
2022-20-00 Grand Gulf Inadequate Lubrication of Containment Personnel Airlock Equalizing Valves 10/31/2022 ML22305A515
2022-17-00 Global Nuclear Fuel Part 21 60-Day Interim Report Notification: GNF3 Raised Water Rod 10/28/2022 ML22301A174
2022-18-01 Tioga Pipe Inc. Revised Final Report Notification Pursuant To 10 CFR Part 21.21, Regarding Supply Of 6" NPS Sch. 40 Seamless Stainless-Steel Pipe 09/02/2021 ML22303A005
2022-18-00 Tioga Pipe Inc. Final Report Notification Pursuant To 10 CFR Part 21.21, Regarding Supply Of 6" NPS Sch. 40 Seamless Stainless-Steel Pipe 08/31/2021 ML22303A004
2022-16-01 Diversified Machine Components Part 21 Notification - Part Number 00900490-00114N Lock Nut (see pages 3 and 4) 09/07/2022 ML22286A048
2022-16-00 Diversified Machine Components Part 21 Initial Notification - Part Number 00900490-00114N Lock Nut (see pages 1 and 2) 09/02/2022 ML22286A048
2022-12-01 Valcor Engineering Corporation Part 21 Final Notification – Premature Failures of Valcor Coil Shell Assemblies 09/12/2022 ML22266A194
2022-12-00 Valcor Engineering Corporation Part 21 Interim Report Notification – Premature Failures of Valcor Coil Shell Assemblies 07/18/2022 ML22266A193
2022-09-02 Curtiss-Wright Nuclear Division Closure Notification of the Potential Defect in Configuration of Quick Disconnect Connector Cable Assemblies (P/N: 913602-111) 08/26/2022 ML22259A173
2022-15-00 Farley, Units 1 and 2 Interim 10 CFR 21.21(a)(2) Report Regarding Framatome Supplied Siemens Medium Voltage Circuit Breakers 08/17/2022 ML22229A515
2022-14-00 NTS Interim Potential Part 21 on Siemens Medium Voltage Circuit Breakers with 3AF Operators Sold to Wolf Creek Nuclear Generating Station 08/05/2022 ML22238A152
2021-29-03 Lake Engineering Co. Final Report per 10 CFR Part 21 Degraded Snubber SF1154 Hydraulic Fluid Batch No. 18CLVS431 07/31/2022 ML22234A160
2022-10-00 Flowserve U S, Inc. Solenoid Coil Failure of Model 38878-8 Solenoid Valve at Catawba Nuclear Station for use on FWIV Actuator 07/01/2022 ML22222A009
2022-13-00 Leonardo DRS Naval Power Systems 16-AAT907B Power Supply 10 CFR Part 21 Notification 08/02/2022 ML22220A236
2022-09-01 Curtiss-Wright Nuclear Division Follow Up to Potential Defect in Configuration of Quick Disconnect Connector Cable Assemblies (P/N: 913602-111) 07/25/2022 ML22215A250
2022-09-00 Curtiss-Wright Nuclear Division Potential Defect in Configuration of Quick Disconnect Connector Cable Assemblies (P/N: 913602-111) 06/24/2022 ML22208A168
2022-08-00 Nutherm International, Inc. 10 CFR Part 21 Notification – Arnold Magnetics Power Supply Part Number PBM-24-106 06/17/2022 ML22208A004
2022-11-00 Framatome Inc. Notification of 10 CFR Part 21 Defect and Failure to Comply: Relay - Failure to Change State 07/13/2022 ML22201A101
2022-05-00 QualTech NP 10 CFR Part 21 Notification for a Curtiss-Wright Supplied RCS/Dresser Actuator, P/N SURE-24-10-4 04/06/2022 ML22153A079
2021-29-02 Lake Engineering Co. Third Interim Notification per 10 CFR Part 21: Degraded Snubber SF1154 Hydraulic Fluid Batch No. 18CLVS431 05/12/2022 ML22154A191
2022-04-01 V.C. Summer Updated 10 CFR 21 Report – Feedwater Isolation Valve Poppet Seal Failure 05/26/2022 ML22146A396
2022-07-00 Westinghouse Electric Company Notification of the Potential Existence of Defects Pursuant to 10 CFR Part 21 04/11/2022 ML22140A208
2022-06-00 McGuire Nuclear Station Interim Report of a Deviation or Failure to Comply 04/08/2022 ML22098A016
2022-03-00 Engine Systems, Inc. EMD Cylinder Head with Fireface Thickness Below Specification Cylinder Head P/N 40121485 03/29/2022 ML22098A117
2022-04-00 V.C. Summer 10 CFR 21 Report – Feedwater Isolation Valve Poppet Seal Failure 03/30/2022 ML22089A244
2022-02-00 Ultra Energy Report Under 10 CFR 21 of Noncompliances to Specification for N7030 Temperature Transmitter 03/09/2022 ML22087A009
2021-29-01 Lake Engineering Co. Second Interim Notification per 10 CFR Part 21: Degraded Snubber SF1154 Hydraulic Fluid Batch No. 18CLVS431 03/03/2022 ML22067A172
2021-07-02 Ametek Solidstate Controls, Inc Final Notification of Potential Defect - 300V, 250A Clamp Diodes 02/11/2022 ML23229A005
2022-01-00 Emerson Process Management / TopWorx Interim Report of a Deviation Related to Limit Switch Dual Continuity Indication 01/28/2022 ML22060A124
2021-28-00 Callaway Plant Written Notification Regarding Paragon Energy Solutions, LLC Power Supplies 12/01/2021 ML21363A151
2021-27-00 Engine Systems, Inc Part 21 Notification for Defective Hinge Pin Retainer Plug on Diesel Check Valve PN ESI50359

11/24/2021

ML22021A029

2021-29-00 Lake Engineering Co. Interim Notification per 10 CFR Part 21: Degraded Snubber SF1154 Hydraulic Fluid Batch No. 18CLVS431 12/28/2021 ML22019A176
2019-39-02 Westinghouse Electric Company NSAL-20-1 Revision 1, "Reactor Vessel Head Control Rod Drive Mechanism Penetration Thermal Sleeve Cross-Sectional Failure" (Note: NSAL-20-1, Rev 1 is not a Part 21 report. However NSAL-20-1 does contain additional information related to the condition described in Part 21 report 2019-0039-00 and -01) 10/13/2021 ML21287A184
2021-08-03 Cameron Nuclear Product Advisory 210316064.4, "BARTON 763/763A/764 Transmitter Heat Rise and Qualified Life." (Note: This Nuclear Product Advisory is not a Part 21 report. However the Product Advisory does contain additional information related to the condition described in Part 21 Report 2020-0008-00). 11/23/2021 ML21328A005
2021-26-00 Paragon Energy Solutions Final Notification of a Deviation with Inverter Assembly (Model NLI-072034-CSI-K-5-A) 10/27/2021 ML21322A051
2020-08-02 Cameron Nuclear Product Advisory 210316064.3, "BARTON 763/763A/764 Transmitter Heat Rise and Qualified Life." (Note: This Nuclear Product Advisory is not a Part 21 report. However the Product Advisory does contain additional information related to the condition described in Part 21 Report 2020-0008-00). 06/17/2021 ML21172A304
2021-25-00 United Controls International United Controls International - 10 CFR21 Notification for York PIN: TCM-1 A Temperature Control Modules 10/28/2021 ML21306A180
2021-16-01 Arkansas Nuclear One, Units 1 and 2 Retraction of Interim Part 21 Report Concerning Potential Defect of FlowServe/Kerotest Globe Valve

10/29/2021

ML21302A072
2021-21-01 Southern Nuclear / Farley Units 1 and 2 Written 10 CFR 21 Notification – General Electric Hitachi Trip Unit Rivets Popping Off 10/22/2021 ML21295A328
2021-24-00 Engine Systems, Inc. Part 21 Reportable Notification on a Pressure Regulator Valve 10/18/2021 ML21295A247
2021-18-01 Flowserve Nuclear Products Operations Closure of Formal Evaluation - DC Cook O-Ring 10/11/2021 ML21288A055
2021-23-00 Flowserve Part 21 Notification for Limitorque Supplied DC Motor 10/04/2021 ML21294A029
2021-22-00 Paragon Energy Solutions Notification of a Deviation with Inverter Assembly 09/28/2021 ML21294A030
2021-21-00 Farley Units 1 and 2 Initial 10 CFR 21 Notification – General Electric Hitachi Trip Unit Rivets Popping Off 09/24/2021 ML21267A538
2021-11-01 Framatome Inc Long Term Solution for 10 CFR Part 21 Defect 09/23/2021 ML21271A234
2021-20-00 V. C. Summer Condition Prohibited by Technical Specifications (involving supports for SR Chillers) (a 50.73 Report) (See related Log No. 2021-0012-01) 08/26/2021 ML21238A158
2021-19-00 TE Connectivity Part 21 Transfer of Information – HI-POT Tester for EGP/ETR Series Relays 09/14/2021 ML21264A133
2021-18-00 Flowserve Nuclear Products Operations Interim Report – Formal Evaluation of Deviations Reported 09/10/2021 ML21258A254
2021-17-00 Ametek Solidstate Controls, Inc  Notification of Potential Defect – 10 CFR Part 21 for Omron Timer Relay 09/09/2021
 
ML21260A007
2021-16-00 Arkansas Nuclear One, Units 1 and 2 Interim Part 21 Report Concerning Potential Defect of FlowServe/Kerotest Globe Valve 08/25/2021 ML21237A248
2020-21-06 Lake Engineering Co. Final Notification per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293 08/04/2021 ML21225A081
2021-15-00 Phi-Delta, Inc. Error Notification for Level 4 Bug in PD/EPD STRUDL 06/14/2021 ML21215A030
2021-14-00 Engine Systems, Inc. Zinc Anode Installed in Emergency Diesel Generator Heat Exchanger (P/N 1335BEM2P) 07/09/2021 ML21209A529
2021-13-00 Vogtle Electric Generating Plant Units 3 and 4 Submittal of 10 CFR 50.55(e) Report Regarding Electrical Construction and Measuring & Test Equipment Control 06/25/2021 ML21176A200
2021-12-01 Paragon Energy Solutions Deviation Identified in the Bolting Utilized to Maintain Seismic Qualification (Update) 06/28/2021 ML21187A124
2021-06-04 Paragon Energy Solutions Failure of Size 1 and 2 Freedom Series FVR Starters (written notification of the identification of a defect) 06/29/2021 ML21181A220
2020-33-00 Cameron Energy Services Nuclear Product Advisory: Barton 752, 752A, 752B, 764 Transmitter Hydrostatic Test 11/09/2020 ML20315A535
2021-12-00 Paragon Energy Solutions Deviation Identified in the Bolting Utilized to Maintain Seismic Qualification 06/10/2021 ML21174A009
2021-09-01 GE Hitachi Nuclear Energy 10 CFR Part 21.21(d)-Reportable Condition: Fuel Support Side Entry Orifice Meta-Stable Flow for 2 Beam Locations in the BWR/6 Reactors 06/17/2021 ML21168A217
2021-06-03 Paragon Energy Solutions Interim Report for Failures of Size 1 and 2 Freedom Series Full Voltage Reversing Starters 05/28/2021 ML21152A279
2021-11-00 Framatome Inc. 10 CFR Part 21 Notification of Existence of a Defect 06/02/2021 ML21161A238
2021-08-01 Meggitt Safety Solutions, Inc. Closure of MSSI Interim Report of a Deviation pursuant to 10 CFR 21.21(a)(2) 06/04/2021 ML21161A008
2021-03-01 Crane Nuclear, Inc. Closure of Potential Part 21 Issue 06/03/2021 ML21158A007
2020-21-05 Lake Engineering Co. Sixth Interim Notification per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293 05/07/2021 ML21146A246
2021-10-00 Xcel Energy / Monticello Initial and Final Written 10 CFR 21 Notification for GE Hitachi NUMAC Power Range Nuclear Monitoring System 05/07/2021 ML21130A302
2021-06-02 Paragon Energy Solutions Failure of Size 1 and 2 Freedom Series FVR Starters (Updated Part Numbers and Date Codes) 05/03/2021 EN 55223
2021-06-01 Paragon Energy Solutions Failure of Size 1 and 2 Freedom Series FVR Starters 04/29/2021 ML21126A172
2021-02-01 Flowserve Limitorque Final Report of the Evaluation of a Deviation Pursuant to 10 CFR 21.21(a)(2) 04/20/2021 ML21111A322
2021-09-00 GE Hitachi Nuclear Energy Part 21 60-Day Interim Report Notification: Side Entry Orifice Hydraulic Loss Coefficient (SC 21-04 R0) 04/19/2021 ML21109A337
2021-07-01 AMETEK Solidstate Controls Udated Notification of Potential Defect - 300V, 250A Clamp Diodes 04/06/2021 ML21096A114
2021-08-00 Meggitt Safety Solutions, Inc Interim Report of a Deviation pursuant to 10 CFR 21.21(a)(2) 04/05/2021 ML21099A085

2020-06-01

Fluke Health Solutions Final Part 21 Report re: Nickel Seal Ring Heat Treatment Dedication. 04/02/2021

ML21098A155

2021-07-00 AMETEK Solidstate Controls Notification of Potential Defect - 300V, 250A Clamp Diodes 04/01/2021 ML21092A129
2021-06-00 Paragon Energy Solutions Failure of Size 1 and 2 Freedom Series FVR Starters 03/30/2021 EN 55162
2021-04-00 Browns Ferry Nuclear Power Plant Interim Report of a Deviation or Failure to Comply 03/23/2021 ML21082A116
2021-01-01 Arkansas Nuclear One, Unit 1 Retraction of an Interim Report Concerning an Evaluation of Deviation 03/15/2021 ML21074A338
2021-03-00 Crane Nuclear, Inc. Potential Part 21 Issue  03/05/2021 ML21089A050
2020-21-04 Lake Engineering Co. Fifth Interim Notification per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293 02/17/2021 ML21063A153
2021-05-01

Gutor Electronic LLC

Final Report of Notification of Potential Defect (A070 Controller Boards) 03/19/2021 ML21105A359
2021-05-00 Gutor Electronic LLC Potential Defect of Basic Components (A070) Controller Boards 02/12/2021 ML21084A114
2021-02-00 Flowserve Limitorque Interim Report of the Evaluation of a Deviation Pursuant to 10 CFR 21.21(a)(2) 02/04/2021 ML21036A187
2019-33-01 Westinghouse Electric Company Closure of Westinghouse Interim Report of the Evaluation of a Deviation Related to 'T cold' Measurement Uncertainty [Log No. 2019-33-00 (ML19294C507)] 03/12/2020 ML20077M122
2021-01-00 Arkansas Nuclear One, Unit 1 Interim Report Concerning an Evaluation of Deviation 01/18/2021 ML21018A005

See also:

To top of page