United States Nuclear Regulatory Commission - Protecting People and the Environment
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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.
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 Friday, September 20, 2019