Pages that link to "05000286/LER-2018-001, Reactor Trip Due to Main Generator Loss of Excitation"

The following pages link to 05000286/LER-2018-001, Reactor Trip Due to Main Generator Loss of Excitation:

Displayed 9 items.

• ML18110A088 (redirect page) ‎ (← links)
  • IR 05000247/2018002 ‎ (← links)
  • ML18213A153 ‎ (← links)
• ML18131A057 ‎ (← links)
• 05000247/LER-2018-003-01, Loss of Safety Function Due to Valve SWN-6 Actuator Failure During Service Water Header Swap ‎ (← links)
• 05000247/LER-2018-003, For Indian Point Nuclear Generating Unit 2, Loss of Safety Function Due to Valve SWN-6 Actuator Failure During Service Water Header Swap ‎ (← links)
• 05000286/LER-2018-003, Manual Reactor Trip Due to a Steam Leak on a High Pressure Feedwater Heater ‎ (← links)
• 05000286/LER-2018-002, Manual Reactor Shutdown Due to Weld Leak in Safety Injection System Tank ‎ (← links)
• 05000247/LER-2018-002, Manual Reactor Trip Due to Trip of Both Main Boiler Feedwater Pumps ‎ (← links)
• 05000247/LER-2018-001, Re Penetration Indications Discovered During Reactor Pressure Vessel Head Inspection ‎ (← links)
• 05000286/LER-2018-001 (redirect page) ‎ (← links)
  • 05000286/LER-2015-001, Safety System Functional Failure Due to Inoperable Refueling Water Storage Tank Level Alarms Due to Freezing of the Level Instrument Sensing Lines Caused by a Failed Strip Heater ‎ (← links)
  • 05000286/LER-2001-001 ‎ (← links)
  • NL-18-022, LER 2018-001-00 for Indian Point 3, Reactor Trip Due to Main Generator Loss of Excitation (redirect page) ‎ (← links)
    • NL-18-022 (redirect page) ‎ (← links)
    • NL-13-063, LER 12-009-01 for Indian Point, Unit 2, Regarding Unanalyzed Condition and Safety System Functional Failure Due to Use of Rad Bypass Switch for Steam Generator Blowdown Isolation Valves Which Defeats Their Automatic Isolation for Analyzed ‎ (← links)
  • IR 05000247/2018002 ‎ (← links)
  • ML18213A153 ‎ (← links)
  • 05000286/LER-1982-002, Forwards LER 82-002/01T-0 ‎ (← links)
  • 05000286/LER-1982-001, Forwards LER 82-001/01T-0 ‎ (← links)
  • 05000286/LER-1982-003, Forwards LER 82-003/01T-0 ‎ (← links)
  • 05000286/LER-1982-004, Forwards LER 82-004/01T-0 ‎ (← links)
  • 05000286/LER-1989-007, :on 890321,unauthorized Access Into Protected Area by Former Employee Utilizing Photo Identification Badge of Another Contract Employee Occurred.Caused by Security Guard Error.Security Retrained ‎ (← links)
  • 05000286/LER-1989-001, :on 890204,initiated Safety Injection Via High Steam Flow Safety Injection Logic.Caused by Uneven Refilling of Steam Flow Instrumentation Lines.Safety Injecton Terminated & Plant Cooldown Proceeded ‎ (← links)
  • 05000286/LER-1987-009-01, :on 870903,determined That If 480 Volt Tie Breaker Racked Out & Cell Switch in Breaker Failed & Loss of Power Occurred,Associated Diesel Generator Would Not Receive Signal.Cause Not Stated.Cell Switches Replaced ‎ (← links)
  • 05000286/LER-1986-012-01, :on 861114,reactor Trip Occurred Due to fail- Safe Design.Caused by Unintentional Opening of Dc Power Supply Breaker.Mod Designed to Provide Easier Access to Dc Power Panels & Prevent Recurrence ‎ (← links)
  • 05000286/LER-1986-010-01, :on 860905,motor-operated Disconnect Switch on Generator Transmission Line Opened,Causing Turbine/Reactor Trip.Caused by Moisture in Underground Conduit Containing Control Wiring.New Conduit Installed ‎ (← links)
  • 05000286/LER-1987-001-01, ,on 870131,reactor Trip & Turbine Trip Initiated by Low Steam Generator Water Level.Caused by Foreign Matter in Multiple Orifice & Check Valve Assembly in Main Boiler Feedwater Pump.Oil Sys Cleaned ‎ (← links)
  • 05000286/LER-1986-004-01, :on 860519,source-range (SR) high-flux Reactor Trip Initiated Automatically by Nuclear Instrumentation Sys. Caused by Operator Failure to Block SR Instrumentation During Startup.Operator Counseled ‎ (← links)
  • 05000286/LER-1986-011-01, :on 860909,reactor Tripped Automatically on Low Steam Generator Water Level.Caused by Water in Boiler Feedpump Control Oil Sys.Oil Sys Cleaned & Temporary Water Deflector Installed ‎ (← links)
  • 05000286/LER-1986-008-01, :on 860829,field Insp Identified Absence of Heat Shrink Tubing at Connection of Coaxial Cable of Containment high-range Radiation Monitors R25 & R26.Heat Shrinkable Tubing Installed ‎ (← links)
  • 05000286/LER-1987-002, :on 870211,static Inverter Tripped Due to Overcurrent Condition.Caused by short-circuited Solenoid Valve.Failed Solenoid Valve Replaced & All Other Affected Sys Verified to Be Functioning Normally ‎ (← links)
  • 05000286/LER-1986-007-01, :on 860527,during Surveillance Testing W/ Reactor in Hot Shutdown,Inadvertent Safety Injection Actuation Occurred.Caused by Technicians Activating High Steam Flow Portion of Safety Injection Logic ‎ (← links)
  • 05000286/LER-1986-006-01, :on 860526,reactor & Turbine Trips Initiated by Low Water Level in Steam Generator 34.Caused by Condensate Polisher Facility Booster Pumps a & B Automatically Starting.Operating Procedures Revised ‎ (← links)
  • 05000286/LER-1986-005-01, :on 860523,turbine Trip Occurred During Monthly Surveillance Test 3PT-M12.Caused by Failed Relay in Turbine Independent Electrical Overspeed Protection Sys (Ieops). Relay Replaced & Similar Ieops Relays Tested ‎ (← links)
  • 05000286/LER-1986-009-01, :on 860902,control Room Switches for Two Containment Spray Pumps & Two Recirculation Sump Pumps Found in trip-pullout Position.Caused by Lack of Communication. Prewarmup Checkoff List & Procedures Revised ‎ (← links)
  • 05000286/LER-1986-002-01, :on 860518,during Main Turbine Vibration Test, Reactor Tripped on Steam Flow/Feedwater Flow Mismatch Signal.Caused by Air Caught in Flow Transmitters Due to Insufficient Blowdown.Operators Counseled ‎ (← links)
  • 05000286/LER-1986-003-01, :on 860519,high Water Level in Steam Generator 34 Resulted in Turbine & Reactor Trips.Caused by Check Valve BFD-1-32 Failure to Reverse Flow Due to Loose Pivot Pins. Disk Pivot Pins Anchored Properly ‎ (← links)
  • 05000286/LER-1985-004, :on 850320,during Plant Startup,Failure of Power Fuses for Nuclear Instrumentation intermediate-range Channel 36 Resulted in Three Reactor Trips.Caused by Intermittent Current Leak Across Test Switch ‎ (← links)
  • 05000286/LER-1989-013, Forwards LER 89-013-00 in Accordance W/Requirements of 10CFR50.73 ‎ (← links)
  • 05000286/LER-1989-003-01, :on 890205,security Gate Found Unlocked.Caused by Cognitive Personnel Error.Upgrade of Security Procedure 4, Compensatory Measures to Clearly Define Methods of Establishing,Maintaining & Closing Posts Performed ‎ (← links)
  • 05000286/LER-1989-013-01, :on 890702,contractor Security Guard Was Found Asleep at Duty Post.Caused by Cognitive Personnel Error. Contract Security Officer Involved in Event Was Dismissed. All Security Personnel Reapprised of Responsibilities ‎ (← links)
  • 05000286/LER-1985-008-01, :on 851018,boric Acid Concentrations Outside Tech Spec Limits.Caused by Difficulties Encountered by Plant Operators When Performing Precipitation Checks.Boric Acid Check Added to Plant Operator Training Program ‎ (← links)
  • 05000286/LER-1985-012-01, :on 851130,after Trip,Source Range Nuclear Instrumentation Channel 31 Failed to Reenergize When Reactor Neutron Flux Dropped Below Permissive Setpoint.Caused by Loose Wire Connection.Connection Repaired ‎ (← links)
  • 05000286/LER-1985-010-01, :on 851129,unit Tripped Due to Inadvertent Main Boiler Feedpump Shutdown & Low Water Level in Steam Generator 34.Caused by Painter Inadvertently Actuating Trip Lever.Painters Reinstructed ‎ (← links)
  • 05000286/LER-1986-001-01, :on 860228,main Turbine Stop & Control Valves Closed & Reactor Tripped on Low Steam Generator Water Level. Caused by Mechanical Binding of Trip Blocking Relay LTB-1. Failed Relay Replaced W/Improved Model ‎ (← links)
  • 05000286/LER-1985-006-01, :on 851004,turbine Trip & Subsequent Reactor Trip Initiated Automatically by High Water Level in Steam Generator 33.Caused by Malfunctioning Valve Positioner Linkage Assembly ‎ (← links)
  • 05000286/LER-1985-009-01, :on 851022,two 480-volt Bus Degraded Grid Voltage Timers Did Not Actuate within 45 as Required by Tech Specs.Caused by Instrument Drift.Timers Reset ‎ (← links)
  • 05000286/LER-1985-011-01, :on 851130,turbine Trip & Subsequent Reactor Trip Initiated Automatically by High Water Level in Steam Generator 32.Caused by Feedwater Perturbations During Flow Transfer Maneuvers ‎ (← links)
  • 05000286/LER-1985-007-01, :on 851015,main Turbine Generator Trip Initiated Automatically by Signal from Main Turbine High Pressure Control Oil Sys.Caused by Blockage of Control Oil Strainers & Orifices.Strainer Cleaned ‎ (← links)
  • 05000286/LER-1984-015, :on 841116,phase-to-phase Fault Across Station Auxiliary Transformer Buswork Caused Loss of Normal Offsite Power.Caused by Piece of Metal Blown Onto Buswork.Power Restored Through Alternate Offsite Source ‎ (← links)
  • 05000286/LER-1985-005-01, :on 850607,w/reactor at 55% Power While Unit Being Shut Down for Refueling Outage,High Pressure Steam Leak Occurred on Cover Gasket for Moisture Separate Reheater Drain Tank 32A.Gasket Replaced ‎ (← links)
  • 05000286/LER-1985-003-01, :on 850319,reactor Trip Breaker Opened, Initiating Unit Trip.Possibly Caused by Inadvertent Actuation of Manual Trip Lever.Testing & Preventive Maint Found No Irregularities ‎ (← links)
  • 05000286/LER-1985-004-01, :on 850320,control Power Fuses for Nuclear Instrumentation Range Channel 36 Failed,Resulting in Three Reactor Trips.Caused by Current Leakage Across Test Switch. Testing Performed.Investigation Continuing ‎ (← links)
  • 05000286/LER-1984-014-01, :on 841013,trip Signal Received While Unit Subcritical.Caused by Blown Control Power Fuse on Channel 35 Intermediate Range Monitor.Fuse Replaced ‎ (← links)
  • 05000286/LER-1985-001-01, :on 850121,unit Trip & Safety Injection Actuation Occurred.Caused by Operators Switching Bus 31 to Backup Power Due to Low Voltage on Two Buses.Solenoid Coil Replaced & Surveillance Test Peformed ‎ (← links)
  • 05000286/LER-1985-002-01, :on 850123,high Level Generator Triggered Turbine & Reactor Trips.Caused by Feedwater Sys Perturbation Due to Starting Second Condensate Pump & Recirculation Valve.Valve Repaired & Calibr ‎ (← links)
  • 05000286/LER-1984-015-01, :on 841116,several Breakers in Electrical Distribution Sys Failed to Operate During Station Blackout. Caused by Piece of Metal Blown Onto a & B Phase Buswork of Station Auxiliary Transformer by High Winds ‎ (← links)
  • 05000286/LER-1984-013-01, :on 840822,turbine Generator & Reactor Trips Initiated Automatically on High Level in Steam Generator 32. Caused by Feedwater Sys Transient Due to Leak in Control Oil Sys.Leak Repaired ‎ (← links)
  • 05000286/LER-1984-012-01, :on 840712,Westinghouse Advised of Potential Overpressure in Component Cooling Water Sys During Inleakage & Heat Load Increases Due to Tube Rupture.Relief & Vent Valves Modified to Ease Overpressure Concern ‎ (← links)
  • 05000286/LER-1984-011-01, :on 840712,turbine Generator Trip & Subsequent Reactor Trip Initiated Automatically Due to Failure of Insulator on 345-kV Feeder.Caused by Deposits on Insulator. Insulator Replaced ‎ (← links)
  • 05000286/LER-1984-010-01, :on 840710,during Evaluation,Util Recognized That Postulated Loss of Station Battery 32,w/concurrent Loca,May Prevent Automatic Starting of Some Safeguards Equipment.Also Reported Per Part 21 ‎ (← links)
  • 05000286/LER-1984-008-01, :on 840529,reactor Tripped When Closure of Loop 33 MSIV Resulted in Turbine Trip.Caused by Inadvertent Opening of Instrument Air Trip Solenoid Vent Valve Due to Latch Pin Rotation.Valve Reset ‎ (← links)
  • 05000286/LER-1984-007-01, :on 840508,while at 100% Power,Monthly Surveillance Test 3PT-M1 Results Indicated Failure in Channel 41.Caused by Out of Range Setpoints Due to Instrument Drift.Instrumentation Readjusted ‎ (← links)
  • 05000286/LER-1984-009-01, :on 840616,reactor Trip Initiated on Low Level in Steam Generator 33.Caused by Main Feedwater Regulating Valve Inadvertent Closure,Due to Failure of Valve Operator Yoke ‎ (← links)
  • 05000286/LER-1984-006-01, :on 840309,during Monthly Reactor Protection Sys Testing,Turbine Tripped.Caused by Inadvertent Closure of Cell Switch Associated W/Reactor Trip Bypass Breaker 52/BYB.Catch Realigned ‎ (← links)
  • 05000286/LER-1984-005, :on 840220,reactor Trip Initiated on Steam Flow/Feed Flow Mismatch on Steam Generator 32.Caused by Closure of Main Feed Regulating Valve Due to Failed Trip Solenoid.Leads Replaced ‎ (← links)
  • 05000286/LER-1984-002-01, :on 840128,w/reactor Critical at Zero Power, Trip Initiated by Intermediate Range Nuclear Instrumentation.Caused by Blown Power Supply Fuse for Channel 32.Fuse Replaced ‎ (← links)
  • 05000286/LER-1983-002-03, /03L-0:on 830512,during Refueling Outage,Small Leak Identified on RHR Miniflow Line at Weld Joint Between Valve 1870 & Line 337.Cause Not Stated.Leak Isolated,Section of Pipe Repaired & Downstream Reducer Replaced ‎ (← links)
  • 05000286/LER-1983-005-01, /01T-0:on 831011,during Cold Shutdown,Determined Design of Drain Line 339 on Each Accumulator Is Such That Seismic & Nonseismic Line Connected by Normally Open Manual Valve.Procedures Revised ‎ (← links)
  • 05000286/LER-1983-006-01, /01T-0:on 831017,established Steel Plates Holding Svc Water Pump 31,32 & 36 Seismic Restraint Collars Not in Place.Caused by Plates Not Replaced After Maint.Missing Pieces Will Be Replaced ‎ (← links)
  • 05000286/LER-1984-003-01, :on 840128,automatic Safety Injection Signal Actuated on High Differential Steam Line Pressure.Caused by Code Safety Valve MS-45 on Main Header 34 Lifting Momentarily.Valve Reset ‎ (← links)
  • 05000286/LER-1984-001-01, :on 840125,w/reactor in Hot Shutdown,Code Safety Valve MS-45 on Main Steam Header 34 Opened Momentarily.Caused by High Differential Pressure Lifting Valve.Valve Reset & Tested ‎ (← links)
  • 05000286/LER-1984-004-01, :on 840209,reactor Trip Actuated on Steam Flow/Feed Flow Mismatch for Steam Generator 32.Caused by Loss of Both Heater Drain Pumps.Associated Instrument Air Lines Blown Down Removing Condensation ‎ (← links)
  • 05000286/LER-1994-010, :on 941007,concluded That at Least Two EDGs Inoperable During June 1992 Surveillance Test of Carbon Dioxide Fire Protection Sys.Caused by Inadequate Procedural Guidance.Surveillance Test Revised ‎ (← links)
  • 05000286/LER-1983-001-03, /03L-0:on 830422,during Processing of Water from Chemical & Vol Control Sys Holdup Tank 33 to Waste Sys,Partial Deformation of Tank Occurred Due to Low Pressure.Caused by Vacuum Due to Closed Vent ‎ (← links)
  • 05000286/LER-1983-003-03, /03L-0:on 830531,while in Hot Shutdown,Leak Observed at elbow-to-pipe Weld on Charging Pump 31 Relief Line.Leak Located on Line 210 Downstream of Relief Valve RV231.Caused by Vibration ‎ (← links)
  • 05000286/LER-1983-004-03, /03L-0:on 830604,leak Observed at elbow-to-pipe Weld on Charging Pump 31 Relief Line 210 Downstream of Relief Valve RV231.Cause Not Stated.Valve 231 Replaced & Pump Returned to Svc ‎ (← links)
  • 05000286/LER-1982-004-01, /01T-0:on 820713,setpoints for Crosby Model Hb Pressurizer Safety Relief Valves PCV-466 & PCV-468 Discovered Below Tech Spec Limit During Cold Testing.Caused by Mechanical Valve Drift.Valves Reset ‎ (← links)
  • 05000286/LER-1982-002-01, /01T-0:on 820327,small Leak Observed on Shell Side of Steam Generator 32.Caused by Oval Shaped Hole in Upper Girth Weld.Secondary Water Level Lowered Below Hole & Leak Terminated.Analysis & Repair Will Occur at Refueling Out ‎ (← links)
  • 05000286/LER-1982-003-01, /01T-0:on 820415,during Cold Shutdown for Refueling Outage,Surveillance Test 3PC-R4 Indicated That Pressure Transmitters PT-456,PT-457 & PT-474 Were Out of Spec.Transmitters Calibr ‎ (← links)
  • 05000286/LER-1981-010-01, /01T-0:on 811208,leak of Approx 1 Pint Per Minute Identified in Fan Cooler Unit 34.Caused by Leak in Tube of Cooling Coils for Motor Cooler.Tube Repaired ‎ (← links)
  • 05000286/LER-1981-010, Forwards LER 81-010/01T-0 ‎ (← links)
  • 05000286/LER-1981-009-03, /03L-0:on 811110,battery Charger 31 Tripped.Cause Not specified.Delta-P Air Flow Sensing Switch Replaced ‎ (← links)
  • 05000286/LER-1981-009, Forwards LER 81-009/03L-0 ‎ (← links)
  • 05000286/LER-1981-008-01, /01T-0:on 811109,at Hot Shutdown,Two Manual Isolation Vlaves in Weld Channel & Containment Penetration Pressurizaiton Sys Were Closed.Caused by Administrative Error.Valves Opened ‎ (← links)
  • 05000286/LER-1981-008, Forwards LER 81-008/01T-0.Detailed Event Analysis Encl ‎ (← links)
  • 05000286/LER-1981-005-03, /03L-1:on 810305,snubber RC-R-70-8-H Was Declared Inoperable Because of Oil Leak.Caused by Failure of O-ring in Main Cylinder Flange & Scoring on Extension & Compression Poppets.Snubber Repaired,Rebuilt & Tested ‎ (← links)
  • 05000286/LER-1981-005, Forwards LER 81-005/03L-1.Detailed Event Analysis Encl ‎ (← links)
  • 05000286/LER-1981-003-03, /03L-1:on 810223,during Seismic Restraint Test, Snubber RC-R-344-5-H Failed to Lock Up in Extension Position.Caused by Excessively High Bleed Rate W/Result That Lockup Was Unobservable.Snubber Rebuilt & Tested ‎ (← links)
  • 05000286/LER-1981-003, Forwards LER 81-003/03L-1 ‎ (← links)
  • 05000286/LER-1981-007-01, /01T-0:on 810928,following Hydrostatic Testing of Rcs,Leakage of Coolant Observed in Steam Generator 31.Cause Not Specified.Unit in Cold Shutdown.Eddy Current Insp of Steam Generators Underway ‎ (← links)
  • 05000286/LER-1981-007, Forwards LER 81-007/01T-0.Detailed Event Analysis Encl ‎ (← links)
  • 05000286/LER-1979-006, Has Been Voided ‎ (← links)
  • 05000286/LER-1979-009, Has Been Voided ‎ (← links)
  • 05000286/LER-1978-022-02, /02L on 780815:With Reactor Coolant System in Hot Shutdown, 32 RHR Pump Seal Was Found Leaking.Pump Seal & Gasket Were Replaced. (Encl to 7809190130) ‎ (← links)
  • 05000286/LER-1978-022, Forwards LER 78-022/02L on 780815 ‎ (← links)
  • 05000286/LER-1981-006-03, /03L-0:on 810706,battery Charger 32 Discovered in Tripped Position.Caused by Faulty delta-P Air Flow Sensing Switch.Switch Replaced ‎ (← links)
  • 05000286/LER-1981-006, Forwards LER 81-006/03L-0 ‎ (← links)
  • 05000286/LER-1979-001-03, /03L-0 on 790211:high Dew Point & Air Leakage on Breaker 2-6 Noted.To Preclude Breaker Damage,Breaker 2-6 Was Opened.Caused by Apparent Gasket Leak in Westinghouse C-A Breaker.Feeder & Breaker Repaired ‎ (← links)
  • 05000286/LER-1979-001, Forwards LER 79-001/03L-0 ‎ (← links)
  • 05000286/LER-1978-034-03, /03L-0 on 781027:increase in Plant Vent Radio Gas Monitor Observed.Caused by Leakage of Charging Pump Plunger 31.Plunger & Packaging for Union Pump QX-300 Quintuplex Replaced.Plunger Returned to Operable Status ‎ (← links)
  • 05000286/LER-1978-025-03, /03L-0 on 780831:excessive Noise from Svc Water Pump 35 Observed at 90% Power.Main Pump Shaft Broken, Disabling One of Three Header Pumps.Caused by Bearing Failures.Pump Secured & Header Redirected ‎ (← links)
  • 05000286/LER-1978-025, Forwards LER 78-025/03L-0 ‎ (← links)
  • 05000286/LER-1979-002-03, /03L-0 on 790205:at 100% Power,Increase in Gaseous Activity Was Observed.Caused by Leakage of No 32 Charging Pump Plunger.Plunger & Packing for Union Pump QX-300 Quintuplex Were Replaced & Unit Returned to Svc ‎ (← links)
  • 05000286/LER-1979-002, Forwards LER 79-002/03L-0 ‎ (← links)
  • 05000286/LER-1979-008-03, /03L-0:on 790803,while Operating at 75% Power,Svc Water Pump 36 Was Smoking at Shaft Packing Gland Area.Caused by Wearing of Line Shafts & Bearings Under Normal Loads.Svc Water Pump Was Replaced ‎ (← links)
  • 05000286/LER-2018-003, Manual Reactor Trip Due to a Steam Leak on a High Pressure Feedwater Heater ‎ (← links)
  • 05000286/LER-2018-002, Manual Reactor Shutdown Due to Weld Leak in Safety Injection System Tank ‎ (← links)
  • 05000286/LER-2018-001, Reactor Trip Due to Main Generator Loss of Excitation ‎ (← links)
  • 05000286/LER-1917-004, Regarding Reactor Trip Due to Main Generator Loss of Field ‎ (← links)
  • 05000286/LER-1917-003, Regarding Condensate Storage Tank Declared Inoperable Per Technical Specification ‎ (← links)
  • 05000286/LER-1917-002, Re Manual Isolation of Chemical and Volume Control System Normal Letdown to Stop a Valve Leak Resulted in an Exceedance of Technical Specification 3.4.9 Condition a Limit for Pressurizer Level ‎ (← links)
  • 05000286/LER-1917-001, Regarding Single Flow Barrier Access Point Found Unbolted ‎ (← links)
  • 05000286/LER-2016-001, Regarding Safety System Functional Failure Due to an Inoperable Containment Caused by a Flaw on the 31 Fan Cooler Unit Service Water Return Coil Line Affecting Containment Integrity ‎ (← links)
  • 05000286/LER-2014-004-01, Regarding Automatic Reactor Trip as a Result of Meeting the Trip Logic for Over Temperature Delta Temperature During Reactor Protection System Pressurizer Pressure Calibration ‎ (← links)
  • 05000286/LER-2015-008, Regarding Automatic Reactor Trip Due to a Turbine-Generator Trip as a Result of a Fault on 345 Kv Feeder W96 Tower Lines Caused by Bird Streaming ‎ (← links)
  • 05000286/LER-2015-007, Regarding Manual Reactor Trip Due to Decreasing Steam Generator Water Levels Caused by a Miss-Wired Circuit Board in the Main Feedwater Pump Speed Control System ‎ (← links)
  • 05000286/LER-2015-006, Regarding Technical Specification Prohibited Condition Due to Two Pressurizer Code Safety Valves Discovered Outside Their As-Found Lift Setpoint Test Acceptance Criteria ‎ (← links)
  • 05000286/LER-2015-005, Regarding Automatic Reactor Trip Due to a Turbine-Generator Trip Caused by the Trip of 345kV Main Generator Output Breaker 3 Due to a Failure of South Ring Bus 345kV Breaker 5 ‎ (← links)
  • 05000286/LER-2015-004, Regarding Automatic Reactor Trip Due to a Turbine-Generator Trip Caused by a Failure of the 31 Main Transformer ‎ (← links)
  • 05000286/LER-2015-003, Regarding Technical Specification Prohibited Condition Caused by Failure to Meet Containment Fan Cooler Unit Service Water (SW) Flow Rate Due to Improper SW Surveillance Test Configuration ‎ (← links)
  • 05000286/LER-2015-002, Regarding Technical Specification Prohibited Condition Caused by Three Main Steam Safety Valves Outside Their As-Found Lift Set Point Test Acceptance Criteria ‎ (← links)
  • 05000286/LER-2015-001, Regarding Safety System Functional Failure Due to Inoperable Refueling Water Storage Tank Level Alarms Due to Freezing of the Level Instrument Sensing Lines Caused by a Failed Strip Heater ‎ (← links)
  • 05000286/LER-2014-003, Automatic Actuation of the Turbine Driven Auxiliary Feedwater Pump Following Testing of the 31 Emergency Diesel Generator Due to Non-SI Blackout Logic Defeated Reset ‎ (← links)
  • 05000286/LER-2014-002, Regarding Technical Specification (TS) Prohibited Condition Due to an Inoperable Essential Service Water (SW) Header as a Result of a Socket Weld Leak in Code Class 3 SW Piping ‎ (← links)
  • 05000286/LER-2014-001, Regarding Automatic Reactor Trip as a Result of Steam Flow/Feedwater Flow Mismatch with Low 33 Steam Generator (SG) Water Level Due to the Failure of the 33 SG Feedwater Flow Controller ‎ (← links)
  • 05000286/LER-2013-006, Regarding Technical Specification Prohibited Condition Due to an Inoperable 33 Station Battery Caused by a Cell Crack ‎ (← links)
  • 05000286/LER-2013-003, Regarding Technical Specification Prohibited Condition Due to Turbine Driven Auxiliary Feedwater Pump Failure to Meet Test Acceptance Criteria ‎ (← links)
  • 05000286/LER-2013-005, Regarding Automatic Actuation of Safety Injection and Engineered Safety Features During Reactor Protection System Functional Testing ‎ (← links)
  • 05000286/LER-2013-004, Regarding Technical Specification (TS) Prohibited Condition Due to Leak in the Reactor Coolant Pressure Boundary Caused by Defects in a Weld on Seal Table In-Core Detector Drive E-11 ‎ (← links)
  • 05000286/LER-2013-002, Regarding Safety System Functional Failure and Common Cause Inoperability of the Emergency Core Cooling System Due to Violation of Containment Sump Debris Barrier Integrity ‎ (← links)
  • 05000286/LER-2012-004, Regarding Automatic Reactor Trip as a Result of a Turbine-Generator Trip Due to a Loss of 345 Kv Feeders W97 and W98 Caused by Storm Damage to Feeder Insulators ‎ (← links)
  • 05000286/LER-2012-003, Regarding Technical Specification Prohibited Condition Due to a Pressurizer Safety Valve Discovered Outside Its As- Found Lift Set Point Test Acceptance Criteria ‎ (← links)
  • 05000286/LER-2011-005-01, Regarding Automatic Actuation of Emergency Diesel Generators and Auxiliary Feedwater Pumps Due to Undervoltage on 480 Vac Vital Buses Due to a Loss of Offsite Power During a Severe Storm ‎ (← links)
  • 05000286/LER-2012-002, Regarding Technical Specification Prohibited Condition Due to Exceeding the Allowed Completion Time for an Inoperable Refueling Water Storage Tank During Connection to Purification System ‎ (← links)
  • 05000286/LER-2012-001, Regarding Common Cause Inoperability of Both Trains of Motor Driven Auxiliary Feedwater (AFW) Pumps Due to Inability to Control AFW Regulating Valves After Isolation of Nitrogen Backup ‎ (← links)
  • 05000286/LER-2011-006, Regarding Technical Specification Prohibited Condition Due to Exceeding the Allowed Completion Time for an Inoperable Isolation Valve Seal Water System Due to an Out of Position Valve ‎ (← links)
  • 05000286/LER-2011-005, Indain Point, Unit 3 Regarding Automatic Actuation of Emergency Diesel Generators and Auxiliary Feedwater Pumps Due to Undervoltage on 480 Vac Vital Buses Due to a Loss of Offsite Power During a Severe Storm ‎ (← links)
  • 05000286/LER-2011-004, Ctr Technical Specification Prohibited Condition Caused by Two Main Steam Safety Valves Outside Their As-Found Lift Setpoint Test Acceptance Criteria ‎ (← links)
  • 05000286/LER-2011-003, For Indian Point Unit 3, Regarding Technical Specification Required Shutdown and a Safety System Functional Failure for a Leaking Service Water Piper Causing Flooding in the SW Valve Pit Preventing Access for Accident Mitigatio ‎ (← links)
  • 05000286/LER-2011-002, Regarding Technical Specification Prohibited Condition Caused by an Inoperable 31 Battery Charger Due to Low Voltage Caused by a Degreased Gate Driver Board ‎ (← links)
  • 05000286/LER-2011-001, Regarding Technical Specification Prohibited Condition Caused by an Inoperable 32 Containment Spray Pump Due to High Contact Resistance in the Supply Breaker Closing Circuit ‎ (← links)
  • 05000286/LER-2010-002, Regarding Manual Reactor Trip Due to a Cooling Water Leak in the Main Generator Exciter Air Cooler ‎ (← links)
  • 05000286/LER-2010-001, Regarding SSFF and TS Violation for an Inoperable RCS Wide Range Temperature Cold Leg Instrument TE-413B Credited for TS 3.3.4 Remote Shutdown ‎ (← links)
  • 05000286/LER-1979-008, Forwards LER 79-008/03L-0 ‎ (← links)
  • 05000286/LER-1978-020-03, /03L-0:on 780729,during Testing,Undervoltage Relay 27-3A Was Actuated at Voltage Below Tech Specs.Caused by Mechanical Binding Between Target Indicator & Trip Mechanism.Mechanical Interference Removed ‎ (← links)
  • 05000286/LER-2009-009, Regarding Loss of Single Train Neutron Flux Detector N-38 Required for Plant Shutdown Remote from the Control Room Due to a Power Supply Failure ‎ (← links)
  • 05000286/LER-2009-008, Technical Specification Prohibited Condition Due to Exceeding the Allowed Completion Time for an Inoperable Over Power Delta Temperature (Opdt) Bistable ‎ (← links)
  • 05000286/LER-2009-007, Regarding Automatic Reactor Trip Due to a Turbine as a Result of Turbine Autostop Oil Actuation Caused by a Failed Autostop Oil Fitting ‎ (← links)
  • 05000286/LER-2009-006, Re Automatic Trip Due to a Turbine-Generator Trip Caused by Actuation of the Generator Protection System Lockout Relay During a Severe Storm with Heavy Lightning ‎ (← links)
  • 05000286/LER-2009-004, Regarding Automatic Reactor Trip Due to High Steam Generator 32 Water Level Caused by Inadequate 31 Main Feedwater Pump Governor Valve Setting and 32 Main Steam Generator Level Controller Set-Up ‎ (← links)
  • 05000286/LER-2009-005, Regarding Technical Specification Prohibited Condition Due to Exceeding Allowed Completion Time for an Inoperable 480 Volt Undervoltage/Degraded Grid Relay Caused by Personal Error ‎ (← links)
  • 05000286/LER-2009-003, Regarding Manual Reactor Trip Due to Steam Generator 33 High Water Level Caused by a Failed 33 Main Feedwater Regulating Valve ‎ (← links)
  • 05000286/LER-2009-002, Regarding Technical Specification Prohibited Condition Caused by Two Main Steam Safety Valves Outside Their As-Found Lift Setpoint Test Acceptance Criteria ‎ (← links)
  • 05000286/LER-2009-001, Regarding Automatic Actuation of an Emergency Diesel Generator & Two Auxiliary Feedwater Pumps During Surveillance Testing Due to Inadvertent De-Energization of Normal Supply Breaker to 480 Volt Safeguards Bus 6A ‎ (← links)
  • 05000286/LER-2008-006, Automatic Actuation of an Emergency Diesel Generator and Two Auxiliary Feedwater Pumps During Surveillance Testing Due to Inadvertent De-Energization of the Normal Supply Breaker to 480 Volt Safeguards Bus 6A ‎ (← links)
  • 05000286/LER-2008-005, Regarding Technical Specification Prohibited Condition Due to Exceeding the Allowed Completion Time for an Out of Position Valve Caused by Personnel Error ‎ (← links)
  • 05000286/LER-2008-004, Automatic Actuation of the Motor Driven Auxiliary Feedwater Pumps During Surveillance Testing Caused by Incorrect Test Jumper Connection Due to Personnel Error ‎ (← links)
  • 05000286/LER-2008-003, Regarding Automatic Actuation of Emergency Diesel Generator 33 During Surveillance Testing Caused by Inadvertent Actuation of the Undervoltage Sensing Circuit on 488 Volt AC Safeguards Bus 5A ‎ (← links)
  • 05000286/LER-2008-002, Regarding Loss of Single Train 31 Pressurizer Backup Heater Bank Required to Function to Shutdown and Maintain the Reactor in a Safe Condition Remote from Control Room ‎ (← links)
  • 05000286/LER-2008-001, Regarding Technical Specification Prohibited Condition Due to Exceeding the Allowed Completion Time for an Inoperable Safety Injection Pump Caused by a Failed Motor Supply Breaker ‎ (← links)
  • 05000286/LER-2007-003, Re Technical Specification Prohibited Condition Due to Exceeding the Allowed Completion Time for an Inoperable Recirculation Pump Caused by a Potential Strong Pump-Weak Pump Interaction During a Small Break LOCA ‎ (← links)
  • 05000286/LER-2007-001, Regarding Manual Reactor Trip Due to Decreasing Steam Generator Levels as a Result of the Loss of Feedwater Flow Caused by the Failure of 32 Main Feedwater Pump Train a Control Logic Power Supply ‎ (← links)
  • 05000286/LER-2007-002, Regarding Automatic Reactor Trip Due to a Turbine-Generator Trip Caused by a Fault on the 31 Main Transformer Phase B High Voltage Bushing ‎ (← links)
  • 05000286/LER-2006-002, Regarding Manual Reactor Trip as a Result of Arcing Under the Main Generator Between Scaffolding and Phase A&B of the Iso-Phase Bus Housing ‎ (← links)
  • 05000286/LER-2006-001, Re Reactor Trip as a Result of Main Generator Due to Short in the Generator Differential Protection Circuit ‎ (← links)
  • 05000286/LER-2005-005, Technical Specification Prohibited Condition Due to Mode Change Without Performing Required Actions with the 32 Containment Fan Cooler Unit Inoperable ‎ (← links)
  • 05000286/LER-2005-002, Re Automatic Reactor Trip Due to 32 Steam Generator Steam Flow/Feedwater Flow Mismatch Caused by Low Feedwater Flow Due to Inadvertent Condensate Polisher Post Filter Bypass Valve Closure ‎ (← links)
  • 05000286/LER-2005-004, Regarding Manual Reactor Trip Due to a Service Water Leak Inside the Main Generator Exciter Enclosure Caused by Exciter Cooler Gasket Leaks ‎ (← links)
  • 05000286/LER-2005-003, Regarding Inadvertent Actuation and Automatic Start of the Auxiliary Feedwater Pumps During Reactor Protection Logic Testing Due to Personnel Error ‎ (← links)
  • 05000286/LER-2005-001, Regarding Plant in a Condition Prohibited by Technical Specifications Due to Error Making Control Room Ventilation System Inoperable ‎ (← links)
  • 05000286/LER-2003-005, Automatic Reactor Trip Due to Reactor Coolant Pump Trip on Under-Frequency Caused by a Degraded Off-Site Grid ‎ (← links)
  • 05000286/LER-2003-004, Indiant Point Unit 3 Re Plant in a Condition Prohibited by Technical Specifications Due to Late Recognition of Inoperable Battery as a Result of Improper Document Use ‎ (← links)
  • 05000286/LER-2003-003, For Indian Point Unit 3 Regarding Automatic Turbine Trip/Reactor Trip Due to Fault in 345kV Generator Output Breaker 3 ‎ (← links)
  • 05000286/LER-2003-002, From Indian Point Unit 3 Regarding Manual Reactor Trip for Fire in Main Turbine Insulation Due to Rearing Oil Leak ‎ (← links)
  • 05000286/LER-2003-001, From Indian Point Unit 3 Regarding Manual Reactor Trip Due to High Differential Pressure Between Condenser Sections ‎ (← links)
  • 05000286/LER-2002-003, From Indian Point Unit 3 Regarding Automatic Reactor Trip Due to Failure of a 345 Kv Main Output Breaker ‎ (← links)
  • 05000286/LER-2002-002, Inoperable Isolation Valve Seal Water System Due to a Mispositioned Valve Is Outside Technical Specifications and a Safety System Functional Failure ‎ (← links)
  • 05000286/LER-2002-001, Operation in Condition Prohibited by Technical Specifications Due to Inoperable Service Water Pipe Caused by Leak Exceeding AOT ‎ (← links)
  • 05000286/LER-1998-001-01, Re Potential Failure or Inadvertent Operation of Fire Protection Systems, Caused by Personnel Error in Design ‎ (← links)