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.

Recently Updated Reports

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Log No. Notifier Description Report Date Event No. / Accession No.
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
2018-23-00 Palo Verde Nuclear Generating Station Interim 10 CFR 21 Report for General Electric Hitachi (GEH) Relay Contact Cartridge DJ148C6159P001 09/26/2018 ML18270A335
2018-16-02 Waterford 3 Part 21 Report of Westinghouse 7300 Circuit Card Increased Failure Rate 09/20/2018 ML18263A281
2018-14-01 AAF International / Flanders Unapproved Design Change in a High Efficiency Particulate Air Filter (Update). 09/14/2018 ML18274A016
2018-22-00 Engine Systems, Inc. Reportable Notification on a Motor Operated Potentiometer P/N 72-07900-100-ESI 09/12/2018 ML18269A112
2018-20-00 Curtiss-Wright Nuclear Division Selector Switch Shorted due to Incorrect Hardware 08/28/2018 ML18243A511
2018-21-00 Perry Nuclear Power Plant Failed Fuse Leads to Loss of Safety Function (A LER which also satisfies the evaluation, notification and reporting requirements under 10 CFR 21) 08/23/2018 ML18236A294
2018-16-01 Waterford 3 Hex Inverter Chip on Westinghouse 7300 Process Analog Control System Circuit Cards 08/23/2018 ML18241A029
2018-19-00 PHI-DELTA, Inc. Submittal of Error Notification for a Reportable Bug in PD (EPD) STRUDL 08/20/2018 ML18235A506
2018-11-01 Prairie Island Nuclear Generating Station Unit 2 Follow-up to Interim Report Related to Failure of a Diesel Generator Pressure Switch 08/06/2018 ML18219A008
2018-17-00 AMETEK Solidstate Controls Potential Defect in AC Voltage Sense Board 07/27/2018 ML18225A118
2018-18-00 Lake Engineering Co. Interim Notification for Degraded Snubber SF1154 Hydraulic Fluid Batch No. 11KLVS146 07/25/2018 ML18211A302
2018-10-01 Westinghouse Electric Company NSAL-18-1 Revision 0, "Thermal Sleeve Flange Wear Leads to Stuck Control Rod." (Note: NSAL-18-1 is not a Part 21 report. However NSAL-18-1 does contain additional information related to Part 21 report 2018-0010-00, including implications on specific guide tube configurations.) 07/17/2018 ML18198A275
2018-16-00 Waterford 3 Interim Report of a Deviation or Failure to Comply (Texas Instruments S/N74LS04N W113 Hex Inverter Chips) 07/05/2018 ML18186A694
2018-15-00 Emerson Fisher Controls International LLC Fisher Information Notice (FIN) 2018-02: Vee-Ball Valve Body-Bracket Bolting Dedication 07/05/2018 ML18191B171
2018-12-01 Framatome Inc.

Notification of 10 CFR 21 Defect – Failure of Relays to Change State

06/28/2018 ML18183A219
2018-14-00 AAF International / Flanders Unapproved Design Change in a High Efficiency Particulate Air Filter 06/20/2018 ML18173A274
2018-13-00 National Technical Systems (NTS) Potential Part 21 on Dedicated Items not Available for PMI Testing (NUPIC) 06/06/2018 ML18159A039
2018-12-00 Framatome Inc. Notification of 10 CFR 21 Defect – Failure of Relays to Change State 06/02/2018 ML18163A182
2018-11-00 Prairie Island Nuclear Generating Station Unit 2 Interim Report Related to Failure of a Diesel Generator Pressure Switch 05/30/2018 ML18150A689
2018-10-00 Westinghouse Electric Company Potential Defects Related to Thermal Sleeves in the Control Rod Drive Mechanism Penetration Tubes 05/23/2018 ML18143B678
2018-09-00 Palo Verde Nuclear Generating Station Unit 1 Condition Prohibited by Technical Specification 3.7.4 Due to Inoperable Atmospheric Dump Valve (This LER also reports a defect pursuant to 10 CFR 21) 05/14/2018 ML18129A420
2018-08-00 Engine Systems, Inc. Component Omitted During Refurbishment of Pressure Regulator Assembly, P/N 1776 506 04/03/2018 ML18102A529
2018-06-01 NextEra Energy / Integrated Supply Chain Dedicating Entity Part 21 Notification - General Electric CR120BD Relay 04/03/2018 ML18095A056
2018-05-01 Crane Nuclear, Inc. Updated Notification of Defect on Crane Nuclear Figure Number 83 1/2 SPL 10"x 8"x 10" and 6"x 4"x 6" Bolted Bonnet Gate Valve 03/21/2018 ML18087A003
2017-39-04 Crane Nuclear, Inc. Closure of Interim Report Notification of XOMOX Plug Valve High Torsional Stress in Stem (Retraction) 03/21/2018 ML18087A002
2017-20-01 CB&I AREVA MOX Services Closure of Interim Report Related to Undersized Vendor Welds on Gloveboxes Supplied by Robatel 03/21/2017 ML18080A024
2018-07-00 Rosemount Nuclear Instruments, Inc. Notification for Certain Model 1154 and Model 1154 Series H Pressure Transmitters and 01154-0153-0002 Amplifier Circuit Card Assemblies 03/15/2018 ML18081A119
2018-06-00 NextEra Energy Inadequate Dedication of Relays 03/15/2018 ML18081A118
2018-05-00 Crane Nuclear, Inc. Notification of Defect on Crane Nuclear Figure Number 83 1/2 SPL 10"x 8"x 10" and 6"x 4"x 6" Bolted Bonnet Gate Valve 03/06/2018 ML18075A355
2018-04-00 Xcel Energy / Monticello Interim Part 21 Report Related to a Failed Bench Test of a General Electric Model CR124C028 Thermal Overload Relay 02/12/2018 ML18044A069
2018-03-00 Xcel Energy / Monticello Initial and Final Part 21 Report Related to an Incorrectly Sized Wire Lug found in a 480VAC Westinghouse / Eaton Circuit Breaker Cubicle 02/01/2018 ML18033A001
2017-55-01 SOR Inc. Final Report for Potential 10 CFR 21 Notification for SOR Qualification Test Report 9058-102 Revision 2 02/05/2018 ML18039A293
2017-39-03 Crane Nuclear, Inc. Interim Report Notification of XOMOX Plug Valve High Torsional Stress in Stem (Update) 01/31/2018 ML18078A536
2018-02-01 Velan Inc. Revised Notification for 4NPS Class 150 through 900 Swing Check Valve Disc (part number 8205-012) 01/24/2018 ML18039A292
2018-02-00 Velan Inc. Notification for 4NPS Class 150 through 900 Swing Check Valve Disc (part number 8205-012) 01/16/2018 ML18024A003
2018-01-00 Engine Systems, Inc. EDG Thermostatic Valve Assembly, P/N 6BOCF14001 01/05/2018 ML18022A282
2017-57-00 Curtiss-Wright Nuclear Division Westinghouse / Eaton Cutler Hammer Part Number KD2200U18 (with Trip Unit P/N KT200T) 12/15/2017 ML18023A407
2017-56-00 Crane Nuclear, Inc. 10 CFR Part 21 Notification of Defect on Weak Link Analysis for Chapman Gate Valve 12/19/2017 ML18003A260
2017-55-00 SOR Inc. Interim Report for Potential 10 CFR 21 Notification for SOR Qualification Test Report 9058-102 Revision 2 12/15/2017 ML18003A259
2017-42-02 Cooper Nuclear Station Licensee Event Report and Part 21 Written Notification – Defect of an Allen-Bradley Control Relay in a NuTherm Starter 12/15/2017 ML17354A149
2017-28-03 Lake Engineering Corp. Closure of Interim Notification Related to Potentially Degraded Snubber SF-1154 Hydraulic Fluid 12/05/2017 ML17355A139
2017-47-01 Paragon Energy Solutions Closure of Interim Report of a Potential Defect of a Paragon Energy Solutions Provided Switch Assembly 11/27/2017 ML17354A026
2017-54-00 Engine Systems, Inc. Turbine Driven Auxiliary Feedwater Pump Control Panel Power Supply Failure 11/21/2017 ML17333A379
2017-53-01 Ultra Electronics Interim Report Retraction – Review of Design Changes to the Commercially Purchased Schneider I/A Pressure Transmitter 11/17/2017 ML17332A005
2017-52-00 Fisher Controls International Fisher Type 461 Valve Plug Machining 11/17/2017 ML17324A979
2017-49-01 Palo Verde Nuclear Generating Station Final Report on HPSI Motor Lead Insulation Gouged 11/08/2017 ML17312A842
2017-28-02 Lake Engineering Corp. Third Interim Notification Related to Potentially Degraded Snubber SF-1154 Hydraulic Fluid 11/03/2017 ML17313A471
2017-39-02 Crane Nuclear, Inc. Interim Report Notification of XOMOX Plug Valve High Torsional Stress in Stem 10/31/2017 ML17311A909
2017-46-01 Callaway Written Notification Regarding Cameron Barton Model 752B Differential Pressure Transmitters 10/31/2017 ML17304A947
2017-51-00 Ametek Solidstate Controls. Potentially Defective Eaton Auxiliary Switch Installed in EG Frame Molded Case Circuit Breakers 10/30/2017 ML17311A907
2017-01-02 Bellefonte Unit 2 Containment Vertical Tendon (V281) Failure – A 50.55(e) Third Interim Report. 10/30/2017 ML17303A875
2017-53-00 Ultra Electronics Interim Report – Review of Design Changes to the Commercially Purchased Schneider I/A Pressure Transmitter 10/27/2017 ML17312A278
2017-50-00 Engine Systems, Inc. Speed Switch Issue Results in Emergency Diesel Generator Failure to Start 10/26/2017 ML17311A150
2015-34-01 C&D Technologies, Inc. Retraction of Interim Report Related to Possible Cracking in KCR-13 Standby Battery Jars 10/23/2017 ML17311A906
2017-49-00 Palo Verde Nuclear Generating Station HPSI Motor Lead Insulation Gouged 10/18/2017 EN 53023
2016-27-02 CB&I AREVA MOX SERVICES Closure of Interim Report Relating to Internal Cross Bracing Welds on High Pressure Filter Housings Provided by Flanders / CSC 10/17/2017 ML17291A042
2017-48-00 National Technical Systems, Inc. Part 21 on Siemens 5-3AF-GER-350-1200-78 & 5-3AF-GEU-350-1200-78 Circuit Breakers 10/11/2017 ML17286A024
2017-47-00 Paragon Energy Solutions Interim Report of a Potential Defect of a Paragon Energy Solutions Provided Switch Assembly 10/06/2017 ML17311A904
2017-46-00 Callaway Part 21 - Initial Notification - Cameron Model 752B Differential Pressure Transmitters 10/03/2017 EN 52998
2017-42-01 Cooper Nuclear Station Licensee Event Report and Part 21 Written Notification - Defect of an Allen-Bradley Control Relay in a NuTherm Starter 09/27/2017 ML17279A111
2017-41-01 Elekta, Inc. Written Notification of a Defect: Oncentra Brachy Applicator Modeling Software when using a Measured Source Path 09/22/2017 ML17271A139
2017-30-01 Tioga Pipe, Inc. Closure of Interim Report Regarding Supply Of 0.5" OD Stainless Steel Tubing 09/22/2017 EN 52745
2017-45-00 XCEL Energy / Prairie Island Unit 2 Initial Notification – EDG High Crankcase Pressure Switch Mounting Bracket Fastener System Failure 09/14/2017 ML17257A411
2017-31-03 Curtiss-Wright Nuclear Division Updated Final Findings Associated with a Potential Defect in Certain Lots of Grayboot Socket Contacts 09/11/2017 ML17311A905
2017-40-01 Columbia Generating Station Part 21 Notification: GE-Hitachi HMA124A2 Relay Back Plate Mounted Incorrectly 09/06/2017 ML17249A692
2017-44-00 Nutherm International, Inc. Relay Failure Allen-Bradley Model 700DC 08/30/2017 ML17311A903
2017-39-01 Crane Nuclear, Inc. Notification of XOMOX Plug Valve High Torsional Stress in Stem (Update) 08/29/2017 EN 52857
2017-43-00 Fisher Controls International, Inc. Erroneous Rotary Seating Torque Calculation in FlowScanner 6.6 Software 08/28/2017 ML17243A136
2017-42-00 Cooper Nuclear Station Allen-Bradley 700DC Relay Failure 08/28/2017 EN 52934
2017-41-00 Elekta, Inc. Oncentra Software Problem may cause Unintended Step Size during Brachytherapy Treatment 08/25/2017 EN 52926
2017-40-00 Columbia Generating Station GE-Hitachi HMA124A2 Relay Back Plate Mounted Incorrectly 08/17/2017 EN 52913
2017-35-02 Susquehanna Steam Electric Station Written Notification of a Deviation Related to the Failure of an Eaton/Cutler Hammer A200 Series Starter 08/17/2017 ML17229B267
2017-33-02 WECTEC LLC Closure of Interim Report Regarding One PCCS Pipe Spool for V. C. Summer Unit 3 and one RCS Pipe Spool for V. C. Summer Unit 2 08/14/2017 ML17251A839
2016-05-01 Mirion Technologies (Canberra), Inc. Final Part 21 Report Related to Several Improperly Dedicated Commercial Grade Components 08/14/2017 ML17228A048
2017-38-01 Curtiss-Wright Nuclear Division Written Notification for Nova Machine Products Hex Cap Screws Produced from One Heat of Material 08/09/2017 ML17223A200
2017-24-01 Xcel Energy / Monticello Closure of Interim Report of a Deviation Related to a new GE Relay Coil 07/31/2017 ML17213A025
2017-28-01 Lake Engineering Corp. Second Interim Notification Related to Potentially Degraded Snubber SF-1154 Hydraulic Fluid 07/24/2017 ML17128A465
2017-35-01 Susquehanna Steam Electric Station Initial Notification of a Deviation Related to the Failure of an Eaton/Cutler Hammer A200 Series Starter 07/21/2017 ML17223A198
2017-39-00 Crane Nuclear, Inc. Notification of XOMOX Plug Valve High Torsional Stress in Stem 07/14/2017 ML17206A040
2017-38-00 Curtiss-Wright Nuclear Division Initial Notification for Nova Machine Products Hex Cap Screws Produced from One Heat of Material 07/13/2017 ML17206A039
2013-09-01 Flowserve Wedge Pin Failure in Anchor Darling Motor Operated Double Disc Gate Valve (Update) 07/11/2017 ML17194A825
2017-21-01 GE-Hitachi Nuclear Energy Final Report: Control Rod Drive Mechanisms (CRDM) Contaminated with Chlorides 07/11/2017 ML17193A256
2016-36-03 Greenberry Industrial Updated Report Regarding a Weld Deviation on Structural Module CA33 for the Vogtle Unit 3 AP1000 Project 07/06/2017 ML17200C954
2017-10-01 WECTEC LLC Closure of Interim Report Regarding Pressurizer Upper Support Ring Girder Strut Lugs Test Coupon Nonconformance for AP1000 Projects 07/05/2017 ML17193A203
2016-27-01 CB&I AREVA MOX SERVICES Updated Interim Report Relating to Internal Cross Bracing Welds on High Pressure Filter Housings Provided by Flanders / CSC 02/28/2017 ML17059C638

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Page Last Reviewed/Updated Thursday, November 01, 2018