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This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.

List of results

• ML20134E904  + (10:47:45, 25 May 2025)
• 05000336/LER-1995-019-02, Forwards LER 95-019-02,documenting Event That Occurred at Millstone Nuclear Power Station Unit 2 on 950514.Util Commitments Made within Ltr,Listed  + (10:47:49, 25 May 2025)
• ML20134E829  + (10:48:12, 25 May 2025)
• 05000352/LER-1996-018, :on 960925,single Train HPCI Sys Was Declared Inoperable Due to Loose Signal Cable Connector.Connector Was Replaced on 970102 & Common HPCI Turbine Maint Procedures Have Been Revised  + (10:48:32, 25 May 2025)
• ML20134E724  + (10:49:04, 25 May 2025)
• TAC:M97132  + (10:50:19, 25 May 2025)
• ML20134E275  + (10:52:28, 25 May 2025)
• ML20134E262  + (10:52:40, 25 May 2025)
• 05000423/LER-1997-001-01, :on 970104,discovered Lack of Verbatim Compliance W/Ts SRs for 125 Volt Batteries & Battery Chargers.Caused by Misconception That Performing Surveillances Was Acceptable.Revised Procedures  + (10:53:10, 25 May 2025)
• 05000382/LER-1985-035, :on 850714,reactor Trip Occurred Due to Electrical Fault in Digital electro-hydraulic Control Panel. Caused by Overheated Resistor on Solid State Circuit Board. Different Resistors Installed  + (10:53:21, 25 May 2025)
• 05000250/LER-1985-018-01, :on 850716,inverter 3C Supplying Power to 120-volt Vital Instrument Panel 3P06 Tripped.Cause Not Determined.Inverter Removed from Svc on 850719 for Replacement W/Different Model  + (10:53:23, 25 May 2025)
• 05000482/LER-1985-051, :on 850720,standby Emergency Diesel Generator a Inadvertently Started,Causing ESF Actuation.Caused by Technician Bumping Start Relay for Generator.Technician Admonished to Exercise Caution  + (10:53:31, 25 May 2025)
• RA96-510, Application for Amend to License SNM-33,increasing Possession Limit in Order to Eliminate Undue Burden Re Managing SNM Inventory  + (10:53:36, 25 May 2025)
• 05000416/LER-1984-050, :on 841102,safe Shutdown Related Cable Raceways W/Omitted Fire Rated Barriers Found Outside Plant Design Basis.Nonconformance Documents Written to Correct Deficiencies & Fire Watches Maintained  + (10:54:01, 25 May 2025)
• 05000293/LER-1985-019, :on 850716,two in-series Secondary Containment Dampers Would Not Fully Close During post-secondary Containment Isolation Insp.Caused by Slippage in Drive Gears.Dampers Will Be Replaced  + (10:54:04, 25 May 2025)
• ML20134D995  + (10:54:37, 25 May 2025)
• 05000528/LER-1985-031, :on 850417,control Room Essential Filtration Actuation Signal Occurred.Caused by Spurious High Radiation Alarm.High Radiation Trip Setpoint Raised to New Tech Spec Limit  + (10:54:44, 25 May 2025)
• 05000155/LER-1985-006-01, :on 850713,partial Loss of Offsite Communications Occurred.Caused by Michigan Bell Erroneously Cutting Toll Cable.Communication Svc Returned in 3 H & 22 Minutes  + (10:54:48, 25 May 2025)
• ML20134D967  + (10:54:55, 25 May 2025)
• 05000368/LER-1985-013, :on 850708,weekly Channel Check of in-core Detector Sys Found Not Performed on 850703.Caused by Administrative Oversight.Check Completed & Schedule Included in Util Tracking Sys  + (10:54:59, 25 May 2025)
• 05000271/LER-1996-031, :on 961009,alternate Rod Insertion Recirculation Pump Trip Occurred Due to Inadvertent False Low Water Level Signal on Level Transmitter During Backfill of Ref Leg.Scram & Ari/Rpt Reset  + (10:55:22, 25 May 2025)
• ML20134D919  + (10:55:27, 25 May 2025)
• 05000454/LER-1985-068, :on 850713,lightning Strike Resulted in Reactor Trip & Damage to Listed Train B Safeguards Instrumentation. Caused by Induced Voltage Transient on Station Ground & Rod Drive Power Failures.Lightning Sys Mods Made  + (10:55:35, 25 May 2025)
• 05000155/LER-1997-001, :on 970102,containment Sphere Integrated Leakage Rate Test Was Not Performed IAW App J to 10CFR50. Caused Because TV-02 Did Not Provide Adequate Guidance for Control of Test.Blind Flange Was Removed  + (10:55:45, 25 May 2025)
• 05000528/LER-1985-042, :on 850711,identified RCS Leak Rate of 1.28 Gpm,Exceeding 1.0 Gpm Limit.Plant Shut Down Per Tech Spec 3.4.5.2.b.Caused by Miscalculation of Leak Rate Due to Procedural Deficiency.Procedure Improved  + (10:55:55, 25 May 2025)

• 05000454/LER-1985-066, :on 850712,operating Temp Delta T Trip Setpoint Exceeded During Load Rejection Testing,Causing Reactor Trip & Control Room Ventilation Makeup Fan auto-start.Caused by Inaccurate Stroke Times of Steam Dump Valves  + (10:56:01, 25 May 2025)

• ML20134D864  + (10:56:04, 25 May 2025)
• 05000341/LER-1985-038, :on 850713,HPCI/RCIC Surveillance Tests Not Performed within 12 H Time Limit Prescribed by Tech Specs. Caused by Omission of Tests in General Operating Procedures. Procedural Deficiencies Corrected  + (10:56:09, 25 May 2025)
• 05000341/LER-1985-037, :on 850711,surveillance Channel Check for Four Isolation Actuation Instruments Required by Tech Spec 4.3.2.1-1 Inadvertently Missed.Caused by Procedural Deficiency.Procedure Reviewed & Revised  + (10:56:13, 25 May 2025)
• 05000368/LER-1980-018-03, /03X-2:on 800407,emergency Feedwater Flow Became Erratic,Indicating Cavitation.Event Followed Loss of Power Caused by Tornado Damage.Caused by Effluent Flashing of Startup & Blowdown Demineralizers  + (10:56:19, 25 May 2025)
• 05000336/LER-1996-043-02, :on 961231,flow Indicators to East & West DC Switchgear Rcs Were Approx 29% Lower than Indicator Flow. Caused by Inadequate Flow Instrument Design Documentation. Elements Orifice Dimensions Verified  + (10:56:36, 25 May 2025)
• ML20134D826  + (10:56:45, 25 May 2025)
• ML20134D820  + (10:56:55, 25 May 2025)
• ML20134D772  + (10:57:16, 25 May 2025)
• 05000354/LER-1996-030-01, :on 961230,uplanned HPCI Sys Inoperability Occurred Due to Stuck Open Extended Containment Boundary Valve.Repaired Check Valve & HPCI Sys Restored  + (10:57:20, 25 May 2025)
• 05000213/LER-1996-020, :on 960709,found Fuel Transfer Tube Bellows Not Included on 10CFR50,App J Test Program.Caused by Administrative Oversight.Bellows Will Be Added to Test Program  + (10:57:34, 25 May 2025)
• 05000213/LER-1996-023, :on 960814,containment Air Recirculation Fans Did Not Meet TS Requirement for Air Flow Rates of 52,500 +/- 2,500 Cfm.Caused by Test Method Variability.Proposed TS Change Request Was Submitted  + (10:57:42, 25 May 2025)
• ML20134D732  + (10:57:46, 25 May 2025)
• 05000155/LER-1996-011-01, :on 960926,TS Surveillance Requirement Inadvertently Surpassed.Caused by Inadequate Procedure. Start-up Procedure 0-TGS-1, Master Checklist Immediately Revised  + (10:57:49, 25 May 2025)
• 05000271/LER-1996-014, :on 960604,FSAR Requirements for Venting Capability of DG Rooms in Event of Tornado Were Not Being Met.Caused by Failure to Implement Plant Construction/ Configuration Change.Mods Installed  + (10:57:52, 25 May 2025)
• ML20134D722  + (10:57:55, 25 May 2025)
• L-96-081, Apologizes for Not Providing IT Corp W/Copy of 960823 Correspondence W/G Yuhas  + (10:57:57, 25 May 2025)
• 05000213/LER-1996-008, :on 960418,removal of Floor Blocks Invalidated Internal Flooding Analysis.Caused by Failure to Establish Administrative Controls for Temporary Removal of Flood Barriers.Evaluated Effects of Flooding  + (10:58:08, 25 May 2025)
• 05000298/LER-1996-013, :on 960925,HPCI Sys Declared Inoperable Due to Control Oil Leak on Turbine Stop Valve Actuator. Stripped Stud Replaced,Actuator Reassembled & Surveillance Satisfactorily Completed  + (10:58:12, 25 May 2025)
• 05000245/LER-1996-052, :on 960920,motor Operated Valves Unable to Close within Stroke Time Limits.Caused by Inadequate Design Margin.Performed Modifications to Ensure IC-2 Will Close & Installed Break Detection Sys Re CU-3  + (10:58:18, 25 May 2025)
• IR 05000331/1996009  + (10:58:29, 25 May 2025)
• 05000293/LER-1996-008, :on 960918,RBCCW Heat Exchanger Was Declared Inoperable.Caused by through-wall Longitudinal Crack in Channel Cylinder Near Bottom on Lower Partition Plate. Cracks in Walls Repaired  + (10:58:54, 25 May 2025)
• 05000313/LER-1996-008-02, :on 960922,ANO-1 Surveillance Testing Discovered Leakage from a Sluice Gate of 103.1 Gallons Per Minute.Caused by Zebra Mussel Infestation of CW Bays.Cw Bays & Forebays Area Will Be Inspected  + (10:59:02, 25 May 2025)
• 05000325/LER-1996-012-01, :on 960919,five of Eight Chlorine Detectors Discovered Inoperable.Caused by Chlorine Detector Test Plan Not Sufficient to Ensure Operability of Chlorine Detection Sys.Five Failed Detectors Immediately Replaced  + (10:59:06, 25 May 2025)
• 05000309/LER-1996-030, :on 960926,identified Incorrect Acceptance Criteria Specified for Containment Ventilation/Purge Sys Filter Surveillances.Caused by Cognitive Error.Specified Required Acceptance Criteria  + (10:59:13, 25 May 2025)
• 05000409/LER-1996-001, :on 960919,noted Documentation of Checks Not Being Performed as Required by Procedure.Caused by Area Radiation Monitor Chart Recorder Out of Svc for Repairs. Plant Manager Issued Memo to Personnel  + (10:59:21, 25 May 2025)