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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

05000254/LER-1983-034-03, /03L-0:on 830908,LPCI Loop Select for RHR Loop a Declared Inoperable Due to Inability to Close Recirculation Pump 1A Discharge Valve Mo 1-202-5A.Caused by Shorted Control Cables on Valve.Cables Replaced + (10:16:34, 26 May 2025)
05000331/LER-1983-035-03, /03L-0:on 830906,during Surveillance Testing,Lis 4531 & 4533 for Reactor Water low-low Tripped Nonconservatively at 113.2 & 113.4 Inches,Respectively. Caused by Instrument Drift.Switches Recalibr + (10:16:35, 26 May 2025)
05000387/LER-1984-005, :on 840127,svc Water Grab Sample Not Taken During Day Shift.Caused by Sample Being Missed During Turnover Between Day & Afternoon Shifts.Procedural Change Issued + (10:16:40, 26 May 2025)
05000271/LER-1995-003, :on 950203,failure to Provide Required Emergency Lighting Occurred.Caused by Lack of Comprehensive Review of Emergent Issue.Procedure Changes Incorporated.W/ + (10:16:48, 26 May 2025)
05000321/LER-1983-097-03, /03L-0:on 830918,operating Personnel Determined That Position of Control Rod 14-43 Could Not Be Ascertained. Caused by Failed Position Switch in Position Indicator Probe.Rod Moved to Position 18 + (10:16:58, 26 May 2025)
05000369/LER-1983-075-03, /03L-0:on 830831,while Attempting to Open Valve 1NM-200B for Stroke Timing During Nuclear Sampling Valve Stroke Timing Quarterly Test,Valve Failed to Open.Caused by Burned Up Actuator.Actuator Will Be Replaced + (10:17:01, 26 May 2025)
05000301/LER-1983-011-03, RHR Pump 2P10B Declared Inoperable Due to High Bearing Vibration Levels.Unit Placed in Degraded Mode.Cause Uncertain.Failed Pump Replaced + (10:17:03, 26 May 2025)
05000346/LER-1983-049-03, /03L-0:on 830905,Fuel Handling Area Door 306 Found Open.Caused by Broken Coordinator Mechanism. Coordinator Mechanism Replaced + (10:17:05, 26 May 2025)
05000318/LER-1983-072-31, /03L-0:on 831217,MSIV 21 Inadvertently Shut.Low Pressure Hydraulic Line on MSIV 21 Became Disconnected & Hydraulic Fluid Reservoir Level Decreased.Caused by Failure of Swagelok Compression Fitting.Line Replaced + (10:17:11, 26 May 2025)
05000387/LER-1984-006, :on 840125,discovered That Performance of Weekly Source & Intermediate Range Monitors W/Unit in Mode 5 Constitutes Core Alteration.Core Alterations Prohibited Per Tech Specs.Tech Spec Change in Progress + (10:17:14, 26 May 2025)
05000317/LER-1984-001, :on 840113,post-accident Sampling Sys Return to Reactor Coolant Drain Tank Isolation Valve Discovered Open.Cause Unknown.Key Switches for Valve Modified + (10:17:16, 26 May 2025)
05000317/LER-1983-074-03, /03L-0:on 831213,flow Lost in Saltwater Subsystem. Caused by Operator Failure to Verify Proper Operation of 4 Kv Manual Disconnect.Standing Instruction Issued + (10:17:23, 26 May 2025)
ML20080R030 + (10:17:24, 26 May 2025)
05000250/LER-1984-005, :on 840125,reactor Trip Occurred.Caused by Accidental Trip of 4160-volt Bus Feeder Breaker by Const Worker.Const Stopped Until Administrative Site Procedure Prepared,Approved & Implemented + (10:17:25, 26 May 2025)
ML20080R011 + (10:17:28, 26 May 2025)
05000296/LER-1984-003-03, :on 840129,during Transfer of 4 Kv Start Bus 1B from Alternate to Normal Feed,Normal Feed Breaker Failed to Close,Resulting in Momentary Loss of Voltage & Automatic Start of Diesel Generators 3C & 3D + (10:17:30, 26 May 2025)
ML20080R000 + (10:17:31, 26 May 2025)
05000353/LER-1995-003, :on 950127,four Drywell Chilled Water Sys Inboard Containment Isolation Valves Automatically Closed Due to Inadvertent Loss of Power to Relay in Closing Circuit.Replaced 2B PAM Recorder W/New Device + (10:17:32, 26 May 2025)
05000327/LER-1983-120-03, /03L-0:on 830910,all Ice Condenser Doors Opened When Containment Sump Isolation Valve 1-FCV-63-73 Stroked. Caused by Backflowed Water Causing Small Pressure Surge in Lower Containment.Doors Closed + (10:17:34, 26 May 2025)
05000254/LER-1983-035-03, /03L-0:on 830915,Target Rock Valve 1-203-3A Stuck Open.Caused by Eroded second-stage Pilot Seat.Valve Replaced & Tested Satisfactorily on 830922 + (10:17:35, 26 May 2025)
05000369/LER-1983-076-03, /03L-0:on 830901,Fire Door 819A Found Propped Up Against Wall W/Screws Removed from Door Hinges.Caused by Door Deliberately Removed from Frame Due to Dragging Problem.Door Repaired + (10:17:42, 26 May 2025)
ML20080Q905 + (10:17:45, 26 May 2025)
05000373/LER-1995-004, :on 950131,senior Licensed Operator Was Not Present in MCR Due to Personnel Error.Memo Was Sent to All Active SRO Licensed Personnel Informing of Event at Station & Reminding of Need for Operator to Be in MCR + (10:17:50, 26 May 2025)
ML20080Q842 + (10:17:52, 26 May 2025)
05000346/LER-1984-002, :on 840119,fuel Transfer Tube 1-1,drain SF69 Opened & Uncapped & Tube 1-2,drain SF68 Partially Opened & Uncapped.Caused by Defective Procedures.Capped Valves Reevaluated & Change Request Imposed + (10:18:05, 26 May 2025)

05000259/LER-1984-009, :on 840130,factor Kf Used in Critical Power Ratio Calculations by Process Computer in Error by Approx 2.5% at Recirculation Flows of Approx 75%.Caused by Loading Core Dump Generated Prior to Factor Correction w/840217 Ltr + (10:18:07, 26 May 2025)

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