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Part 21 Reports
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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
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| Log No. | Notifier | Description | Report Date | Event No. / Accession No. |
|---|---|---|---|---|
| 2020-09-00 | C&D Technologies, Inc. | 10 CFR Part 21 Evaluation Regarding Container Failure in KCR-07 Batteries | 02/11/2020 | ML20049A075 |
| 2020-10-00 | Ametek Solidstate Controls | Notification of Potential Defect Regarding AMETEK Power Supply, Series 85-RPXXX | 02/11/2020 | ML20049A076 |
| 2020-07-00 | Fairbanks Morse | 10 CFR 21.21(d)(3)(ii) Notification, Unknown Tightness of Opposed Piston Diesel Engine Cam Thrust Lock Nut Assembly | 01/31/2020 | ML20049A074 |
| 2020-04-01 | Curtiss-Wright Flow Control | 10 CFR Part 21 Report - Notification of a Defect - Modification of a Valve Component and Main Disc Lift Misadjustment (Update) | 01/31/2020 | ML20042E252 |
| 2020-08-00 | Cameron | Notification Regarding Barton Model 763 or 763A or 764 Electronic Transmitter Qualified Life Update | 01/30/2020 | ML20038A272 |
| 2020-04-00 | Curtiss-Wright Flow Control | 10 CFR Part 21 Report, Notification of a Defect Modification of a Valve Component and Main Disc Lift Misadjustment | 01/21/2020 | ML20029D161 |
| 2020-06-00 | Fluke Health Solutions | 10 CFR Part 21 Interim Report re: Nickel Seal Rings | 01/20/2020 | ML20024E245 |
| 2020-05-00 | United Controls International | 10 CFR Part 21 Notification for Ashcroft Industrial and Weksler Regal Gauges | 01/13/2020 | ML20028D380 |
| 2020-02-00 | Carrier Corporation | Interim Report of Defect Pursuant to 10 CFR Part 21 – Failure of Improperly Assembled Oil Pump | 01/10/2020 | ML20016A220 |
| 2020-01-00 | Engine Systems, Inc. | Inadequate Thread Modification on Selenium Surge Suppressors (EMD P/N 8403049) | 01/08/2020 | EN 54467 |
| 2020-03-00 | Lake Engineering Co. | Interim Notification per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. 16DLVS852 | 01/03/2020 | ML20021A045 |
| 2019-39-00 | Westinghouse Electric Company | Potential Existence of Defect Pursuant to 10 CFR Part 21: Identification of a Fractured and Dislocated Control Rod Drive Mechanism (CRDM) Thermal Sleeve. | 12/12/2019 | ML19346H873 |
| 2019-38-00 | General Atomics | Reportable Occurrence under 10CFR21: Reported Failure in Analog High Range Radiation Monitor (RP-2C). | 12/10/2019 | ML19347A426 |
| 2019-37-00 | Rosemount Nuclear Instruments, Inc. | Interim Notification under 10 CFR Part 21 for Rosemount Model 1153 and 1154 Pressure Transmitters | 12/05/2019 | ML19361A029 |
| 2019-36-00 | Palo Verde Nuclear Generating System | Interim 10 CFR 21 Report for Masoneilan Model 8005N Transducer | 11/15/2019 | ML19323C971 |
| 2019-35-00 | Frontek Anchor/Darling Enterprises, Inc. | Degraded Hydraulic Snubber Fluid | 11/06/2019 | EN 54375 |
| 2019-15-04 | Lake Engineering Co. | Potentially Degraded Snubber SF1154 Hydraulic Fluid Batch ZJS1518 Final Report per 10 CFR Part 21 | 11/07/2019 | ML19325C094 |
| 2019-27-01 | Flowserve | Final Report (Event # 54301) – ASME Section III – NC-4000, Base Material Acceptance Criteria Usage in lieu of Welding Acceptance Criteria for Valves with Temporary Attachments (i.e. – Lug removal areas). | 10/22/2019 | ML19351D242 |
| 2019-31-00 | Curtiss-Wright Nuclear Division | Incorrectly Wired Socket Side Quick Disconnect Connectors | 10/22/2019 | EN 54345 |
| 2019-30-01 | Palo Verde Nuclear Generating Station (PVNGS) Units 1, 2, and 3 | Written Defect Notification for GE-Hitachi Stationary Primary Contact Finger Q0114C5382P002 | 10/31/2019 | ML19304B607 |
| 2019-32-00 | Engine Systems, Inc. | Report No. 10 CFR21-0127, Rev. 0, EMD Fuel Injectors - Seized Plunger and Bushing | 10/25/2019 | ML19317D093 |
| 2019-30-00 | Palo Verde Units 1, 2 and 3 | GE Hitachi Primary Contact Finger Surface Defect | 10/04/2019 | EN 54309 |
| 2019-34-00 | Browns Ferry, Units 1, 2, and 3 | Interim Report of a Deviation or Failure to Comply (GEH terminal board clip block, part number 228B2374P003) | 10/29/2019 | ML19302D983 |
| 2019-33-00 | Westinghouse Electric Company | Interim Report of the Evaluation of a Deviation Related to 'T cold' Measurement Uncertainty | 10/21/2019 | ML19294C507 |
| 2019-29-00 | AZZ Nuclear Group | Initial 10 CFR Part 21 Notification - F10 Series MCC Cubicle Stab Alignment - Ref: P21-10042019-1 | 10/04/2019 | ML19305B576 |
| 2019-19-02 | Engine Systems, Inc. | 10CFR21 Reporting of Defects and Non-Compliance (Signal Converter Transmitter) (Rev. 1) | 10/11/2019 | ML19295D732 |
| 2019-28-00 | Arkansas Nuclear One | ITE/Gould J20M Coil Block Relay | 10/02/2019 | EN 54215 |
| 2019-27-00 | Flowserve | Use of Base Material Acceptance Criteria in Lieu of Welding Acceptance Criteria for Valves with Temporary Attachments (i.e. – Lug Removal Areas). | 09/30/2019 | ML19281B133 |
| 2019-26-00 | Westinghouse Electric Company | NSAL-19-2 Revision 0, "Contactors Failing to Release/Open When De-energized." | 09/24/2019 | ML19269B709 |
| 2019-25-00 | Rotork Controls, Inc. | Part 21 Notification Concerning a Safety Related "Outer Clutch Ring", Part Number N40039. | 09/23/2019 | ML19290E236 |
| 2019-15-03 | Lake Engineering Co. | Third [Fourth] Interim Notification per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. ZJS1518 | 09/09/2019 | ML19263A666 |
| 2019-22-01 | Flowserve Flow Control Division | Non-Destructive Examination Performance of Components by an Unqualified Employee (Final Report) | 09/06/2019 | ML19261A194 |
| 2019-05-02 | AZZ Nuclear | Report of Potential 10 CFR Part 21, EATON A200 Series Starters/Contactors | 08/29/2019 | ML19253A053 |
| 2018-14-03 | AAF International / Flanders | Unapproved Design Change in a High Efficiency Particulate Air Filter (Final Report). | 08/08/2019 | ML19248B766 |
| 2019-21-01 | Columbia Generating Station | Part 21 Written Notification - Spectrum Technologies Control Power Transformers (Micron model B150-2957-1) |
09/03/2019 | ML19247C581 |
| 2019-24-00 | Emerson Process Management, LLC | Fisher Information Notice: FIN 2019-01 – Mechanical Setting of Disk/Stem Taper Pins | 08/23/2019 | ML19239A124 |
| 2019-23-00 | Engine Systems, Inc. | Report No 10CFR21-0126, Rev 0 – EMD Fuel Injector – Cracked Spray Tip, PIN 5229250 | 08/22/2019 | ML19246A102 |
| 2019-22-00 | Flowserve Flow Control Division | Non-Destructive Examination Performance of Components by an Unqualified Employee | 08/12/2019 | EN 54215 |
| 2019-21-00 | Columbia Generating Station | Part 21 Notification - Spectrum Technologies Control Power Transformers (Micron model B150-2957-1) | 08/08/2019 | EN 54206 |
| 2019-18-01 | Ultra Electronics |
Updated Interim Notification Per 10CFR21 (Foxboro Weed N-E11 & N-E13 Series transmitters) | 07/26/2019 | ML19213A025 |
| 2019-19-01 | Engine Systems, Inc. | 10CFR21 Reporting of Defects and Non-Compliance (Signal Converter Transmitter) | 07/19/2019 | ML19207A056 |
| 2019-20-03 | ITT Engineered Valves, LLC | Revised Final Report to the NRC of 10 CFR 21 Event 54118 Concerning #25 AM Diaphragm Valves | 08/20/2019 | ML19234A129 |
| 2019-20-02 | ITT Engineered Valves, LLC | Final Report to the NRC of 10 CFR 21 Event 54118 Concerning #25 AM Diaphragm Valves | 08/13/2019 | ML19228A122 |
| 2019-20-01 | ITT Engineered Valves, LLC | Part 21 Written Report Concerning #25 Airmotor Diaphragm. | 07/12/2019 | ML19197A049 |
| 2019-17-02 | Curtiss-Wright SAS | Update to 10 CFR Part 21 Reporting of Defects for Introl Positioner 890265-010 - CW SAS Initial Report No. 10CFR21-48 | 07/11/2019 | ML19210D434 |
| 2019-15-02 | Lake Engineering Co. | Third Interim Notification per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. ZJS1518 | 07/05/2019 | ML19199A034 |
| 2019-20-00 | ITT Engineered Valves, LLC | Potential Part 21 Issue Concerning #25 Airmotor Diaphragm | 06/14/2019 | ML19171A033 |
| 2019-17-01 | Curtiss-Wright SAS | 10 CFR Part 21 Reporting of Defects for Introl Positioner 890265-010 - CW SAS Initial Report No. 10CFR21-48 | 06/07/2019 | ML19190A048 |
| 2019-19-00 | Engine Systems, Inc. | Interim Report 10CFR21 Reporting of Defects and Non-Compliance (Signal Converter Transmitter) | 06/05/2019 | ML19165A027 |
| 2019-18-00 | Ultra Electronics |
Interim Notification Per 10CFR21 (Foxboro Weed N-E11 & N-E13 Series transmitters) | 05/31/2019 | ML19155A084 |
| 2018-24-03 | Curtiss-Wright Nuclear Division | Notification Report for Potential Part 21 (Final Report) | 05/31/2019 | ML19168A010 |
| 2019-17-00 | Paragon Energy Solutions LLC | 10 CFR Part 21 Report of Defect - GS2 Terry Turbine Introl Positioners | 05/31/2019 | ML19168A012 |
| 2019-16-00 | SSM Industries, Inc. | Notification of Potential Defect Applicable to Hytork XL 1126 Pneumatic Actuator | 05/22/2019 | ML19154A207 |
| 2019-15-01 | Lake Engineering Co. |
Second Interim Notification per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. ZJS1518 | 05/06/2019 | ML19136A044 |
| 2019-14-00 | Flowserve Nuclear Products Operations (Vernon) | Notification of Defect - Pressure Breakdown Sleeve, Part Number 09125139 installed in in Charging Pump Model - 2" RLIJ | 04/25/2019 | ML19119A085 |
| 2019-13-00 | AZZ Nuclear | Interim Report of Potential 10 CFR Part 21, EATON Size 1 and 2 A200 Series Starters/Contactors | 04/17/2019 | ML19120A106 |
| 2019-12-00 | Curtiss-Wright Nuclear Division, Enertech | 10 CFR Part 21 Notification for SF-1154 Hydraulic Fluid |
04/15/2019 | ML19121A155 |
| 2019-11-00 | AMETEK Solidstate Controls | Notification of Potential Defect - 10 CFR Part 21 | 04/12/2019 | ML19106A106 |
| 2019-10-00 | Weir Valves & Controls USA, Inc. |
Part 21 Report - Residual Heat Removal System Motor Operated Globe Valve Experienced Stem Failures | 04/04/2019 | ML19101A097 |
| 2019-03-01 | Engine Systems Inc. | 10 CFR 21 Reportable Notification on Excitation Transformers for Vickers Voltage Regulator System | 03/21/2019 | ML19087A252 |
| 2019-09-00 | Weir Valves & Controls USA, Inc. |
10 CFR Part 21 Report: 24" Class 150 Globe Failed to fully Open due to the Failure of the Anti-Rotation Key | 03/11/2019 | ML19087A251 |
| 2019-05-01 | AZZ Nuclear | Updated Part 21 Notification of Potential 10 CFR Part 21, EATON A200 Series Starters/Contactors | 03/08/2019 | ML19080A059 |
| 2018-24-02 | Curtiss-Wright Nuclear Division | Interim Notification Report for Potential Part 21 (Second Update) | 03/08/2019 | ML19078A087 |
| 2019-08-00 | Curtis-Wright Flow Control Co. | Target Rock Solenoid Valve 810000-X Positioner Circuit Failure May Cause Undesired Position | 03/06/2019 | ML19072A063 |
| 2018-23-01 | Palo Verde Nuclear Generating Station | Closure of Interim 10 CFR 21 Report for General Electric Hitachi (GEH) Relay Contact Cartridge DJ148C6159P001 | 03/06/2019 | ML19065A297 |
| 2019-15-00 | Lake Engineering Co. | Interim Notification per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. ZJS1518 | 03/05/2019 | ML19077A096 |
| 2018-26-02 | ABB Motors and Mechanical Inc. | Closure of Interim Part 21 Report – Evaluation Of Motors | 03/04/2019 | ML19072A064 |
| 2018-18-03 | Lake Engineering Co. | Final Notification for Degraded Snubber SF1154 Hydraulic Fluid Batch No. 11KLVS146 | 03/01/2019 | ML19071A112 |
| 2019-07-00 | Flowserve | Spring Deflection Causing Potential Hang-Up of the Flapper (Disc), Worcester Series 44 | 02/20/2019 | ML19064A231 |
| 2019-07-00 | Flowserve | Spring Deflection Causing Potential Hang-Up of the Flapper (Disc), Worcester Series 44 | 02/20/2019 | ML19064A231 |
| 2019-06-00 | Xcel Energy / Monticello | "C" Outboard Main Steam Line Isolation Valve Delayed Closure Due to Foreign Material in the Air Valve (LER and Part 21 Report) | 02/14/2019 | ML19046A002 |
| 2019-05-00 | AZZ Nuclear | Part 21 Initial Notification of Potential 10 CFR Part 21, EATON A200 Series Starters/Contactors | 02/08/2019 | ML19053A499 |
| 2018-29-01 | Xcel Energy / Monticello | Cancellation of Non-Fully Closed Check Valves Resulted in a Potential Pathway Outside Secondary Containment (Cancellation of LER and Interim Part 21 report) | 02/07/2019 | ML19038A258 |
| 2019-04-00 | SOR Inc. | Part 21 Notification of Deviation SOR R-Series Housing with Terminal Block | 02/01/2019 | ML19053A500 |
| 2019-03-00 | Engine Systems Inc. | Part 21 Report - Saturable Reactor (Magnetic Amplifier) for Vickers Voltage Regulator System, P/N 8408218-ESI | 01/25/2019 | ML19042A080 |
| 2019-02-00 | Weschler Instruments | Notification of a Potential Defect in Weschler KX-241 axial, VX-252 and VC-252 Instrument Models | 01/17/2019 | ML19024A163 |
| 2018-26-01 | ABB Motors and Mechanical Inc. | Second Interim Report from ABB Motors and Mechanical Inc. (formerly Baldor Electric Company) on three AC electric motors | 01/11/2019 | ML19024A165 |
| 2019-01-00 | AMETEK Solidstate Controls | Dedication Testing not performed on Safety-Related Operational Spare Parts Kits | 01/07/2019 | ML19024A164 |
| 2018-18-02 | Lake Engineering Co. | Third Interim Notification for Degraded Snubber SF1154 Hydraulic Fluid Batch No. 11KLVS146 | 01/04/2019 | ML19008A043 |
| 2018-30-01 | Engine Systems, Inc. | Revision 1 to 10 CFR 21 Reportable Condition on EMD Fuel and Soakback Pumps | 12/21/2018 | ML19002A204 |
| 2018-32-00 | Mirion Technologies (Canberra), Inc. | Part 21 Report Related to Relay Chatter in Safety-Related Radiation Monitoring Systems | 12/06/2018 | ML18341A247 |
| 2018-31-00 | Framatome, Inc. |
Part 21 Notification of Existence of a Defect Involving O-ring Supplied in Chesterton Pump Seal Cartridge | 12/06/2018 | ML18344A054 |
| 2018-30-00 | Engine Systems, Inc. | 10 CFR 21 Reportable Condition on EMD Fuel and Soakback Pumps | 11/30/2018 | ML18353A428 |
| 2018-13-01 | National Technical Systems (NTS) | Closure of Potential Part 21 on Dedicated Items not Available for PMI Testing (NUPIC) | 11/09/2018 | ML18327A033 |
| 2018-29-00 | Xcel Energy / Monticello | Non-Fully Closed Check Valves Resulted in a Potential Pathway Outside Secondary Containment (LER and Interim Part 21 report) | 11/09/2018 | ML18313A256 |
| 2018-28-00 | Emerson - Fisher Controls International |
Fisher Digital Valve Controllers 6000/6200 Series not Environmentally Qualified |
10/31/2018 | ML18309A035 |
| 2018-14-02 | AAF International / Flanders | Unapproved Design Change in a High Efficiency Particulate Air Filter (Second Update). | 10/31/2018 | ML18313A033 |
| 2018-27-00 | ITT Enidine | ITT Conoflow GT25 Series Current to Pressure Transducer Failure to Comply with EQ Test Report Specifications | 10/19/2018 | ML18302A228 |
| 2018-26-00 | ABB Motors and Mechanical Inc. | Interim Report from ABB Motors and Mechanical Inc. (formerly Baldor Electric Company) on three AC electric motors | 10/12/2018 | ML18302A229 |
| 2018-25-00 | ABB Inc. | 10 CFR Part 21 Notification of Deviation, Dry Type Transformer Serial # 24-26458 | 10/10/2018 | ML18289A455 |
| 2018-24-00 | Curtiss-Wright Nuclear Division | Interim Notification Report for Potential Part 21 with Exelon PowerLabs Failure Analysis | 10/08/2018 | ML18289A457 |
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Page Last Reviewed/Updated Thursday, February 20, 2020
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