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 Issue dateTitleTopic
ML21225A0814 August 2021Lake Engineering Co., Final Report Per 10 CFR Part 21 Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293
ML21014A2347 December 2020Fourth Interim Notification Per 10 CFR Part 21 Re Degraded Snubber SF1154 Hydraulic Fluid Batch No. 17BLVS293
ML19199A0345 July 2019Lake Engineering Co., Third Interim Notification Per 10 CFR Part 21 Degraded Snubber SF1154 Hydraulic Fluid Batch No. ZJS1518
ML19071A1121 March 2019Lake Engineering Co., Corrected Potentially Degraded Snubber SF1154 Hydraulic Fluid Batch 11KLVS146 Final Report, Per 10 CFR Part 21
ML18295A19924 September 2018Lake Engineering - Second Interim Notification Per 10 CFR Part 21: Degraded Snubber SF1154 Hydraulic Fluid Batch No. 11KLVS146
ML18211A30225 July 2018Interim Notification Per 10 CFR Part 21, Degraded Snubber SF1154 Hydraulic Fluid Batch No. 11 KLVS146
ML17243A13628 August 2017Fisher Information Notice, (FIN) 2017-04 - Erroneous Rotary Seating Torque Calculation in Flowscanner Software
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
ML17026A41420 January 2017C&D Technologies, Inc. - Part 21 - Plastic Jar Dedication Sampling
ML15022A65020 January 2015Letter from Steven R. Eisenberg USNRC 10CFR Part 21 Notification
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
ML14204A70723 July 2014Completed Evaluation of Part 21 Potentially Reportable Condition Notification: Unseating of Valve Spring on SSPV
ML14204A70823 July 2014Enclosure 2, Description of Closure Evaluation, Non-Proprietary Information - Class I (Public)Safe Shutdown
Shutdown Margin
Scram Discharge Volume
ML13165A34212 June 201360-Day Interim Report Involving an Evaluation of a Design Change to Magne-Blast Circuit Breakers
ML13079A32018 March 2013Notification of Potential Part 21 Interim Report Re Possible Deviation or Defect in Nuclear Qualified High Efficiency Particulate Air Filters
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 Methodology
ML13044A0758 February 2013Part 21 - Completed Evaluation for Potential Error in Main Steam Line High Flow Calculational Methodology
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
ML12283A24628 September 2012Part 21 - Fairbanks Morse Opposed Piston EDG Oil Pump LeakHydrostatic
ML12319A01227 September 2012Error in Main Steam Line High Flow Calculational Methodology
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
ML12094A3712 April 2012Part 21 Report - Rosemount Pressure Transmitters with Nonzero Based Calibrations
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
ML11228A08412 August 2011Notification of Part 21 - Failure to Include Seismic Input in Reactor Control Blade Customer GuidanceSafe Shutdown Earthquake
Operating Basis Earthquake
Channel-control blade interference
Scram Discharge Volume
ML11224014211 August 2011Part 21 60-Day Interim Report Notification: Failure to Include Seismic Input in Channel-Control Blade Interference Customer GuidanceSafe Shutdown Earthquake
Channel-control blade interference
Scram Discharge Volume
ML11140A08713 May 2011Sor Event 46821 Evaluation of Deviation for DefectLoctite
ML11126A0154 May 2011Sor, Inc., Pressure Switch with Possible Sub-Standard Electrical Lead Terminations
ML11048005415 February 2011Notification of Potential Part 21 Reportable Condition: Crack Indications in Marathon Control Rod Blades
ML11046048715 February 2011Notification of Potential Part 21 Reportable Condition Re Design Life of D and s Lattice Marathon Control Blades
ML10351003115 December 2010Notification of Potential Part 21 Report Concerning Failure to Include Seismic Input in Reactor Control Blade Customer GuidanceSafe Shutdown Earthquake
Operating Basis Earthquake
Channel-control blade interference
ML10350017415 December 2010Notification of Potential Part 21 Re 60-Day Interim Report Notification: Failure to Include Seismic Input in Channel-Control Blade Interference Customer GuidanceSafe Shutdown Earthquake
Operating Basis Earthquake
Channel-control blade interference
ML10306010229 October 2010Notification of Potential Part 21 Transfer of Information Concerning Control Components Inc. (CCI) Drag ValvesBoric Acid
ML10293050520 October 2010GE Hitachi Nuclear Energy - Notification of Potential Part 21 60-Day Interim Report: Crack Indications in Marathon Control Rod Blades
ML10295028120 October 2010Part 21 Notification - Crack Indications in Marathon Control Rod Blades
ML10273006327 September 2010Notification of Potential Part 21 Report Concerning Failure to Include Seismic Input in Reactor Control Blade Customer GuidanceSafe Shutdown Earthquake
Operating Basis Earthquake
Channel-control blade interference
ML10270061427 September 2010Part 21 60-Day Interim Report Notification: Failure to Include Seismic Input in Channel-Control Blade Interference Customer GuidanceSafe Shutdown Earthquake
Operating Basis Earthquake
Channel-control blade interference
ML1025202193 September 2010Part 21 - Failure to Include Seismic Input in Reactor Control Blade Customer GuidanceSafe Shutdown Earthquake
Operating Basis Earthquake
Channel-control blade interference
ML1018907391 July 2010Part 21 Report Concerning Failure of Turbine Overspeed Reset Control Valve Diaphragm
ML1018201601 July 2010Notification of Potential Part 21 Reportable Condition Re Failure of HPCI Turbine Overspeed Reset Control Valve Diaphragm
ML10082005922 March 2010GE Hitachi Nuclear Energy, Part 21 60-Day Interim Report Notification: Failure of HPCI Turbine Overspeed Reset Control Valve Diaphragm
NG-09-0608, Notification of Potential Part 21 Re Duane Arnold Energy Center Identification of Defect30 July 2009Notification of Potential Part 21 Re Duane Arnold Energy Center Identification of Defect