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Home NRC Library Document Collections Events, Reports Associated with Part 21 Reports

Part 21 Reports: 2023

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Log No. Notifier Description Report Date Event No. / Accession No.
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
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
2023-28-01 Paragon Energy Solutions Final Report of a Deviation Associated with Detroit Diesel/MTU Fuel Injectors PN R5229660 Cat ID# 0001390618   01/17/2024 ML24018A036
2023-28-00 Paragon Energy Solutions Interim Report of a Deviation Associated with Detroit Diesel/MTU Fuel Injectors PN R5229660 Cat ID# 0001390618  12/19/2023 ML23354A094
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
2023-27-00 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
2023-26-02 Tioga Pipe, Inc Final Report of a Deviation Associated with Buttweld 90 Degree Elbows   02/02/2024 ML24037A020
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
2023-25-01 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
2023-24-01 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
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
2023-23-01 Enertech Final Report of a Deviation Associated with P/N D2060S Potentiometer  12/07/2023 ML23352A246
2023-23-00 Enertech Interim Report of a Deviation Associated with P/N D2060S Potentiometer 10/27/2023 ML23306A072
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
2023-22-01 MISTRAS Group, Inc Deviation in the Calibration Certificates for An Acoustic Emission Instrument 10/31/2023  EN 56808

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
2023-21-01 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
2023-21-00 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
2023-20-02 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
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
2023-20-00 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
2023-19-01 Flowserve Limitorque Actuators  Final Report of a Deviation Associated with a SMB-1 Geared Limit Switch Assembly  11/17/2023  ML23324A377
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
2023-17-01 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
2023-16-01 Cooper Nuclear Station Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Certain GE-Hitachi HGA Relays 09/06/2023 ML23249A112
2023-16-00 Cooper Nuclear Station Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Certain GE-Hitachi HGA Relays 08/15/2023 EN 56679
2023-15-01 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
2023-15-00 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
2023-14-01 GE Hitachi Nuclear Energy Part 21 Final Report Notification: Failure of the CRD Collet Retainer Tube/Outer Tube Weld 7/26/2023 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
2023-13-01 River Bend Station Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Motor Driven Relay Failed Testing 08/24/2023 ML23236A246
2023-13-00 River Bend Station Interim Report Notification Pursuant to 10 CFR Part 21.21, Regarding Motor Driven Relay Failed Testing 07/26/2023 EN 56641
2023-12-01 Summer 10 CFR Part 21 Report Emergency Feedwater Check Valve Socket Head Capscrew 07/31/2023 ML23212A954
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
2023-10-01 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
2023-10-00 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
2023-09-01 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
2023-09-00 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
2023-06-00 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
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
2023-04-00 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
2023-03-01 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
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
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
2023-01-02 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
2023-01-01 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
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

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Page Last Reviewed/Updated Thursday, February 22, 2024