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 Issue dateTitleTopic
L-MT-21-035, Initial and Final Written 10 CFR 21 Notification for GE Hitachi Numac Prnm System7 May 2021Initial and Final Written 10 CFR 21 Notification for GE Hitachi Numac Prnm System
ML19091A05021 March 2019Engine Systems, Inc. 10 CFR 21 Reporting of Defects and Non-Compliance Report No. 10CFR21-0124, Rev. 0, Excitation Transformers for Vickers Voltage Regulator System
ML19087A25221 March 2019Engine Systems, Inc. - 10 CFR 21 Reportable Notification on Excitation Transformers for Vickers Voltage Regulator System
ML19042A08025 January 2019Part 21 Report No. 10CFR21-0124-INT; Rev. 0 - Saturable Reactor (Magnetic Amplifier) for Vickers Voltage Regulator System, P/N 8408218-ESI
L-MT-18-012, Interim Report of a Deviation or Failure to Comply12 February 2018Interim Report of a Deviation or Failure to Comply
L-MT-18-008, Initial and Final Part 21.21(d)(4) Report Notification of Failure to Comply or Existence of a Defect Regarding Westinghouse Breaker Cubicle1 February 2018Initial and Final Part 21.21(d)(4) Report Notification of Failure to Comply or Existence of a Defect Regarding Westinghouse Breaker CubicleTime of Discovery
ML17212A62824 July 2017Lake Engineering Co. - Potentially Degraded Snubber SF1154 Hydraulic Fluid Second - Interim Notification Per 10 CFR Part 21
ML17194A82511 July 2017Part 21 Report Re Wedge Pin Failure in Anchor Darling Motor Operated Double Disc Gate Valves with Threaded Stem to Upper Wedge ConnectionsAnchor Darling
ML17179A3787 June 2017TE Connectivity - Part 21 Transfer of Information TE-023
L-MT-17-031, Interim Report of a Deviation or Failure to Comply Regarding New Relay Coil GE Part Number 6306774G120 April 2017Interim Report of a Deviation or Failure to Comply Regarding New Relay Coil GE Part Number 6306774G1
ML17081A45320 March 2017Part 21 - Plastic Jar Dedication Sampling
ML17026A41420 January 2017C&D Technologies, Inc. - Part 21 - Plastic Jar Dedication Sampling
L-MT-17-005, Interim Report of a Deviation or Failure to Comply17 January 2017Interim Report of a Deviation or Failure to Comply
ML16321A45121 October 2016Part 21 Reporting of Defects and NoncomplianceCommercial Grade
ML16321A45031 August 2016Part 21 Notification - Flowserve Swing Check ValvesAnchor Darling
ML16243A47225 August 2016Part 21 Reporting of Defects and NoncomplianceCommercial Grade
ML16139A83410 May 2016Electroswitch - Transmittal of 10CFR Part 21 Reporting of Defects and Noncompliance Regarding Vendor Inspection of Electroswitch Corporation Docket No. 99900833Commercial Grade
ML15265A41821 September 2015Sor, Inc. - Part 21 Notification of Deviation - ML15251A212 Irradiation Certification with Insufficient Margin
ML14274A05222 September 2014Final Report 10CFR Part 21 Evaluation Regarding Misaligned Separators in LCR-25 Standby Batteries, Revision 1 - Original Letter Did Not Include the List of Affected Utilities
ML14210A01023 July 2014Part 21 - Unseating of Valve Spring on Scram Solenoid Pilot ValveSafe Shutdown
Shutdown Margin
Scram Discharge Volume
ML14204A70823 July 2014Enclosure 2, Description of Closure Evaluation, Non-Proprietary Information - Class I (Public)Safe Shutdown
Shutdown Margin
Scram Discharge Volume
ML14204A70723 July 2014Completed Evaluation of Part 21 Potentially Reportable Condition Notification: Unseating of Valve Spring on SSPV
ML14212A40118 July 2014Final Report - 10 CFR Part 21 Evaluation Regarding Cracking in KCR-13 Standby Battery Jars
ML14134A1229 May 2014Notification of Potential Part 21 Report - Cracking in KCR-13 Standby Battery Jars
ML14139A01728 April 2014Updated Interim Report - Inability to Complete 10CFR Part 21 Evaluation Regarding Cracking in KCR-13 Standby Battery Jars
ML14042A2025 February 2014Part 21 Report Regarding Unqualified Material Used in Electrical Penetration Assemblies
ML14042A20129 January 2014Part 21 Report Regarding Non-Destructive Testing Did Not Meet Procedural RequirementsTime of Discovery
Nondestructive Examination
Liquid penetrant
ML13358A30620 December 2013Interim Report - Inability to Complete 10CFR Part 21 Evaluation Regarding Cracking in KCR-13 Standby Battery Jars
ML14006A00413 December 2013Trivis, Inc., Part 21 Interim Report - Nonconforming Dry Shielded Calster Welds - Potential Substantial Safety HazardTime of Discovery
Nondestructive Examination
Liquid penetrant
ML13358A04613 December 2013Report of Potential Substantial Safety Hazard in Accordance with Title 10 Code of Federal Regulation, Part 21Nondestructive Examination
Liquid penetrant
ML13340A3825 December 2013Part 21 Reportable Condition Notification: Failure of Relay Logic Card Modules in 2 Out of 4 Voters
ML13277A01023 September 2013Interim Report Update for Component ASME Material Supplied by Mirion Technologies (Conax Nuclear), Inc. (Mtcn), as Part of Containment Electric Penetration Assemblies (EPA)
ML13246A08423 August 2013Notification of Potential Defect & Interim Report Regarding a Potential Defect of Materials Supplied to Operating Us Nuclear Power Plants by Mirion Technologies (Conax Nuclear) Inc. (Mtcn) with Containment Electric Penetration Assemblies
ML13165A34212 June 201360-Day Interim Report Involving an Evaluation of a Design Change to Magne-Blast Circuit Breakers
ML13064A01225 February 2013Notification of Potential Part 21 Report Re Wedge Pin Failure of an Anchor/Darling Double-Disc Gate ValveAnchor Darling
ML13042A0968 February 2013Completed Evaluation of Part 21 Potentially Reportable Condition Notification: Error in Main Steam Line High Flow Calculational MethodologyPower Uprate
ML13044A0758 February 2013Part 21 - Completed Evaluation for Potential Error in Main Steam Line High Flow Calculational MethodologyPower Uprate
ML12352A12313 December 201260-Day Interim Report Involving an Evaluation of a Design Change to Magne-Blast Circuit Breakers
ML12348A13613 December 2012Part 21 60-Day Interim Report Notification: Adequacy of Design Change in Am Magne-Blast Circuit Breakers
ML12347A30812 December 2012Part 21 60-Day Interim Report Notification: Error in Main Steam Line High Flow Calculational Methodology
ML12319A01227 September 2012Error in Main Steam Line High Flow Calculational Methodology
ML12177A05621 June 2012Part 21 - Reliability Degradation of Resistors in Trip Units and Readout Assemblies
ML12163A1306 June 2012Part 21 Report - Failure of CRD Collet Retainer Tube/Outer Tube Weld
ML12158A4476 June 2012Part 21 60-Day Interim Report Notification - Closufailure of CRD Collet Retainer Tube/Outer Tube Weld
ML12058A14123 February 2012Part 21 Report - Rosemount Nuclear Instruments, Inc., Pressure Transmitter with Nonzero Based Calibrations
ML12040A2837 February 2012Notification of Potential Part 21 - Failure to Include Seismic Input in Reactor Control Blade Customer GuidanceSafe Shutdown Earthquake
Operating Basis Earthquake
Channel-control blade interference
ML12038A0282 February 2012Failure of CRD Collet Retainer Tube/Outer Tube Weld
ML12032A2401 February 2012Notification of Potential Part 21 - 60-Day Interim Report Notification: Failure of CRD Collet Retainer Tube/Outer Tube Weld
ML11341A0605 December 2011Notification of Potential Part 21 Involving Defective Spring Clips Used as Seismic Restraints on Two Scientific Modules
ML11340A1005 December 2011Letter 10 CFR Part 21 Notification Report, CON2000 and RTD2100 Spring Clips
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