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| 05000265/LER-1983-001-03, /03L-0:on 830102,offgas Radiation Monitor 1 Failed.Caused by Faulty Resistor in Power Supply to Monitor. Resistor Replaced | /03L-0:on 830102,offgas Radiation Monitor 1 Failed.Caused by Faulty Resistor in Power Supply to Monitor. Resistor Replaced | |
| 05000265/LER-1983-001, Forwards LER 83-001/03L-0 | Forwards LER 83-001/03L-0 | |
| 05000254/LER-1983-001-03, /03L-0:on 830104,diesel Generator 1/2 Tripped on High Crankcase Pressure Signal.Caused by Lubricating Oil Splashing on Pressure Sensor Upon Startup.Sensor Replaced | /03L-0:on 830104,diesel Generator 1/2 Tripped on High Crankcase Pressure Signal.Caused by Lubricating Oil Splashing on Pressure Sensor Upon Startup.Sensor Replaced | |
| 05000254/LER-1983-001, Forwards LER 83-001/03L-0 | Forwards LER 83-001/03L-0 | |
| 05000265/LER-1983-002, Forwards LER 83-002/03L-0 | Forwards LER 83-002/03L-0 | |
| 05000265/LER-1983-002-03, /03L-0:on 830106,significant Increase in Condensate Pump Discharge Conductivity Noted.Caused by Loose screw-in Filter Elements Which Allowed Resins to Pass. Filters Tightened & Resin Trap Replaced | /03L-0:on 830106,significant Increase in Condensate Pump Discharge Conductivity Noted.Caused by Loose screw-in Filter Elements Which Allowed Resins to Pass. Filters Tightened & Resin Trap Replaced | |
| 05000254/LER-1983-002-03, /03L-0:on 830119,during HPCI Operability Test, Motor Speed Changer Would Not Move from Low Speed Stop. Caused by Excessive Friction.Low Speed Stop Post Filed Down Until Post Merely Rested Against Collar Tab | /03L-0:on 830119,during HPCI Operability Test, Motor Speed Changer Would Not Move from Low Speed Stop. Caused by Excessive Friction.Low Speed Stop Post Filed Down Until Post Merely Rested Against Collar Tab | |
| 05000254/LER-1983-002, Forwards LER 83-002/03L-0 | Forwards LER 83-002/03L-0 | |
| 05000254/LER-1983-003, Forwards LER 83-003/03L-0 | Forwards LER 83-003/03L-0 | |
| 05000254/LER-1983-003-03, /03L-0:on 830118,during Reactor Water Level Calibr Procedure Qis 10-1,switch LIS-1-263-58A Tripped Below Tech Specs.Caused by Instrument Setpoint Drift.Level Switch Recalibr | /03L-0:on 830118,during Reactor Water Level Calibr Procedure Qis 10-1,switch LIS-1-263-58A Tripped Below Tech Specs.Caused by Instrument Setpoint Drift.Level Switch Recalibr | |
| 05000265/LER-1983-003, Forwards LER 83-003/03L-0 | Forwards LER 83-003/03L-0 | |
| 05000265/LER-1983-003-03, /03L-0:on 830110,traversing Incore Probe 4 Ball Valve Failed to Fully Close as Travelling Incore Probe Returned to Shield.Caused by Crud Buildup in Internals, Allowing Valve to Only Partially Close.Ball Valve Cleaned | /03L-0:on 830110,traversing Incore Probe 4 Ball Valve Failed to Fully Close as Travelling Incore Probe Returned to Shield.Caused by Crud Buildup in Internals, Allowing Valve to Only Partially Close.Ball Valve Cleaned | |
| 05000265/LER-1983-004, Forwards LER 83-004/03L-0 | Forwards LER 83-004/03L-0 | |
| 05000265/LER-1983-004-03, /03L-0:on 830116,containment Cooling Loop B Taken Out of Svc for Maint on RHR HX 2B.Bellows Seal Replaced on Pipe from Primary Side of HX Through Secondary Side & Through Exterior of HX for Draining Primary Side | /03L-0:on 830116,containment Cooling Loop B Taken Out of Svc for Maint on RHR HX 2B.Bellows Seal Replaced on Pipe from Primary Side of HX Through Secondary Side & Through Exterior of HX for Draining Primary Side | |
| 05000254/LER-1983-004-03, /03L-0:on 830109,containment Cooling Loop a Taken Out of Svc for Preventive Maint on RHR 1A Hx.New Gaskets for Inner Head & Drain Line of HX Installed to Repair Small Leaks | /03L-0:on 830109,containment Cooling Loop a Taken Out of Svc for Preventive Maint on RHR 1A Hx.New Gaskets for Inner Head & Drain Line of HX Installed to Repair Small Leaks | |
| 05000254/LER-1983-004, Forwards LER 83-004/03L-0 | Forwards LER 83-004/03L-0 | |
| 05000254/LER-1983-005-03, /03L-0:on 830115,HPCI Motor Gear Unit Raised to Normal High Speed Stop But Returned to Low Speed Stop When Manual Operation Switch Released.Caused by Failed Power Supply Resistor.Resistor & Amplifier Replaced | /03L-0:on 830115,HPCI Motor Gear Unit Raised to Normal High Speed Stop But Returned to Low Speed Stop When Manual Operation Switch Released.Caused by Failed Power Supply Resistor.Resistor & Amplifier Replaced | |
| 05000265/LER-1983-005, Forwards LER 83-005/03L-0 | Forwards LER 83-005/03L-0 | |
| 05000254/LER-1983-005, Forwards LER 83-005/03L-0 | Forwards LER 83-005/03L-0 | |
| 05000265/LER-1983-005-03, /03L-0:on 830316,while Performing Routine Reactor low-low Water Level Functional Test Procedure Q1S 11-2, Level Switch LIS-2-263-72C Failed to Operate.Caused by Misalignment of mercury-wetted Switch.Switch Realigned | /03L-0:on 830316,while Performing Routine Reactor low-low Water Level Functional Test Procedure Q1S 11-2, Level Switch LIS-2-263-72C Failed to Operate.Caused by Misalignment of mercury-wetted Switch.Switch Realigned | |
| 05000265/LER-1983-006-03, /03L-0:on 830424,AO 2-203-2D MSIV Failed to Initiate Half Scram on Reactor Protection Sys Channel B. Caused by Channel B 10% Closure Limit Switch Failure.Limit Switch Replaced w/like-for-like Switch | /03L-0:on 830424,AO 2-203-2D MSIV Failed to Initiate Half Scram on Reactor Protection Sys Channel B. Caused by Channel B 10% Closure Limit Switch Failure.Limit Switch Replaced w/like-for-like Switch | |
| 05000254/LER-1983-006, Forwards LER 83-006/03L-0 | Forwards LER 83-006/03L-0 | |
| 05000254/LER-1983-006-03, /03L-0:on 830213,during Monthly Surveillance Test on Condenser Pit 5-ft Trip Circuits,Level Switch 1-4441-25B Failed to Give Circulating Water Pump Trip Signal.Caused by Broken Wire in Switch Mechanism.Switch Replaced | /03L-0:on 830213,during Monthly Surveillance Test on Condenser Pit 5-ft Trip Circuits,Level Switch 1-4441-25B Failed to Give Circulating Water Pump Trip Signal.Caused by Broken Wire in Switch Mechanism.Switch Replaced | |
| 05000265/LER-1983-007-01, /01T-0:on 830509,while Reviewing out-of-svc Documentation,Discovered That Control Rod Drives (CRD) 38-07 & 46-55 on Unit 2 & 06-43 on Unit 1 Made Inoperable W/O Verifiying Shutdown Margin or Insertion | /01T-0:on 830509,while Reviewing out-of-svc Documentation,Discovered That Control Rod Drives (CRD) 38-07 & 46-55 on Unit 2 & 06-43 on Unit 1 Made Inoperable W/O Verifiying Shutdown Margin or Insertion | |
| 05000254/LER-1983-007, Forwards LER 83-007/03L-0 | Forwards LER 83-007/03L-0 | |
| 05000254/LER-1983-007-03, /03L-0:on 830214,suppression Chamber Nitrogen Purge Valve AO-1-1601-56 Failed to Isolate During Maint on Drywell High Radiation Monitors.Caused by Failure of Solenoid Pilot Valve.Valve Replaced | /03L-0:on 830214,suppression Chamber Nitrogen Purge Valve AO-1-1601-56 Failed to Isolate During Maint on Drywell High Radiation Monitors.Caused by Failure of Solenoid Pilot Valve.Valve Replaced | |
| 05000254/LER-1983-008, Forwards LER 83-008/03L-0 | Forwards LER 83-008/03L-0 | |
| 05000265/LER-1983-008-03, /03L-0:on 830520,RHR Pump 2B Room Watertight Door Could Not Be Shut Tightly.Caused by Bent Pivot Arm.Arm Repaired & RHR B Loop Declared Operable | /03L-0:on 830520,RHR Pump 2B Room Watertight Door Could Not Be Shut Tightly.Caused by Bent Pivot Arm.Arm Repaired & RHR B Loop Declared Operable | |
| 05000254/LER-1983-008-03, /03L-0:on 830210,during Functional Test Qis 35-2, Fuel Pool Radiation Monitor 1-1705-16A Failed to Trip Upscale.Caused by Instrument Calibr Drift.Monitor Recalibr & Function Test Completed Satisfactorily | /03L-0:on 830210,during Functional Test Qis 35-2, Fuel Pool Radiation Monitor 1-1705-16A Failed to Trip Upscale.Caused by Instrument Calibr Drift.Monitor Recalibr & Function Test Completed Satisfactorily | |
| 05000254/LER-1983-009-03, /03L-0:on 830222,differential Pressure Indicating Switch 1-1360-1A Failed to Trip in Negative Direction.Caused by Drift of Instrument Setpoint Above Physical Stops.Switch Recalibr & Tested Satisfactorily | /03L-0:on 830222,differential Pressure Indicating Switch 1-1360-1A Failed to Trip in Negative Direction.Caused by Drift of Instrument Setpoint Above Physical Stops.Switch Recalibr & Tested Satisfactorily | |
| 05000265/LER-1983-009-01, /01T-0:on 830630,isolation Valves to Core Spray Discharge Pressure Switches PS-2-1462C & PS-2-1462D for Automatic Depressurization Sys Low Pressure Pump Running Permissive Found Isolated & Sealed | /01T-0:on 830630,isolation Valves to Core Spray Discharge Pressure Switches PS-2-1462C & PS-2-1462D for Automatic Depressurization Sys Low Pressure Pump Running Permissive Found Isolated & Sealed | |
| 05000265/LER-1983-010-03, /03L-0:on 830623,while Performing Standby Gas Treatment Sys Operability Test,Heater Did Not Start Automatically When Train 1/2A Started.Caused by Heater High Temp Switch Trip Due to Incorrect Setpoint | /03L-0:on 830623,while Performing Standby Gas Treatment Sys Operability Test,Heater Did Not Start Automatically When Train 1/2A Started.Caused by Heater High Temp Switch Trip Due to Incorrect Setpoint | |
| 05000254/LER-1983-010-03, /03L-0:on 830224,reactor Bldg & Control Room Ventilation Sys Isolated & Standby Gas Treatment auto-started Due to Apparent Spike in Refuel Floor Radiation Monitors.Caused by Failure of Relay Coil 1705-108 | /03L-0:on 830224,reactor Bldg & Control Room Ventilation Sys Isolated & Standby Gas Treatment auto-started Due to Apparent Spike in Refuel Floor Radiation Monitors.Caused by Failure of Relay Coil 1705-108 | |
| 05000254/LER-1983-010, Forwards LER 83-010/03L-0 | Forwards LER 83-010/03L-0 | |
| 05000254/LER-1983-011-03, /03L-0:on 830225,during Low Condenser Vacuum Calibr & Functional Tests,Pressure Switch PS-1-503A Tripped at 20.9 Inches Hg Vacuum.Caused by Setpoint Drift.Switch Recalibr & Functionally Tested | /03L-0:on 830225,during Low Condenser Vacuum Calibr & Functional Tests,Pressure Switch PS-1-503A Tripped at 20.9 Inches Hg Vacuum.Caused by Setpoint Drift.Switch Recalibr & Functionally Tested | |
| 05000254/LER-1983-011, Forwards LER 83-011/03L-0 | Forwards LER 83-011/03L-0 | |
| 05000265/LER-1983-011-03, /03L-0:on 830711,circuit Breaker Overloads Tripped Repeatedly While Attempting to Open Valve Mo 2-1001-36B from Control Room.Caused by Excessive Close Torque Setting. Overloads Replaced & Torque Decreased | /03L-0:on 830711,circuit Breaker Overloads Tripped Repeatedly While Attempting to Open Valve Mo 2-1001-36B from Control Room.Caused by Excessive Close Torque Setting. Overloads Replaced & Torque Decreased | |
| 05000254/LER-1983-012-01, /01T-1:on 830310,reactor Operator Inadvertently Inserted Control Rods in Reverse Order.Caused by Personnel Error.Control Room Personnel Will Be Instructed in Proper Procedures | /01T-1:on 830310,reactor Operator Inadvertently Inserted Control Rods in Reverse Order.Caused by Personnel Error.Control Room Personnel Will Be Instructed in Proper Procedures | |
| 05000265/LER-1983-012-03, /03L-0:on 830816,calibr of Suppression Pool Water Temp Found Below Tech Spec Requirements.Caused by Instrument Calibr Drift.Pool Cooling Initiated | /03L-0:on 830816,calibr of Suppression Pool Water Temp Found Below Tech Spec Requirements.Caused by Instrument Calibr Drift.Pool Cooling Initiated | |
| 05000254/LER-1983-012, Forwards LER 83-012/01T-0 | Forwards LER 83-012/01T-0 | |
| 05000254/LER-1983-013-03, /03L-0:on 830319,1A MSIV Air Pilot Valve Temp Indicator Found Inoperable.Caused by Personnel Error.Wiring Error Corrected & Personnel Reprimanded | /03L-0:on 830319,1A MSIV Air Pilot Valve Temp Indicator Found Inoperable.Caused by Personnel Error.Wiring Error Corrected & Personnel Reprimanded | |
| 05000254/LER-1983-013, Forwards LER 83-013/03L-0 | Forwards LER 83-013/03L-0 | |
| 05000254/LER-1983-014, Forwards LER 83-014/03L-0 | Forwards LER 83-014/03L-0 | |
| 05000254/LER-1983-014-03, /03L-0:on 830322,low Electrolyte Level Found in Station Battery Cell 100.Caused by Crack in Bottom Corner of Casing.Normal Loads Transferred to Unit 2 250-volt Battery on 830324.Cell Replaced | /03L-0:on 830322,low Electrolyte Level Found in Station Battery Cell 100.Caused by Crack in Bottom Corner of Casing.Normal Loads Transferred to Unit 2 250-volt Battery on 830324.Cell Replaced | |
| 05000254/LER-1983-015-03, /03L-0:on 830405,reactor Bldg & Control Room Ventilation Sys Isolated & Standby Gas Treatment Autostarted.Caused by Failure of Relay Coil 1701-100A.Coil Replaced.Relay Will Be Replaced | /03L-0:on 830405,reactor Bldg & Control Room Ventilation Sys Isolated & Standby Gas Treatment Autostarted.Caused by Failure of Relay Coil 1701-100A.Coil Replaced.Relay Will Be Replaced | |
| 05000254/LER-1983-015, Forwards LER 83-015/03L-0 | Forwards LER 83-015/03L-0 | |
| 05000265/LER-1983-016-03, /03L-0:on 830912,temp Switch TS-2-2370A Tripped Above Tech Spec Limit & Switches TS-2-2370D & TS-2-2371D Failed in Closed Position.Caused by Setpoint Drift & Overheating.Switches Replaced | /03L-0:on 830912,temp Switch TS-2-2370A Tripped Above Tech Spec Limit & Switches TS-2-2370D & TS-2-2371D Failed in Closed Position.Caused by Setpoint Drift & Overheating.Switches Replaced | |
| 05000254/LER-1983-016-03, /03L-0:on 830331,reactor Operator Found RHR Discharge Pressure Greater than 90 Psig,Exceeding Tech Spec Range.Caused by Valve Leaking from Condensate Transfer Sys Into RHR Discharge Piping.Mod Implemented | /03L-0:on 830331,reactor Operator Found RHR Discharge Pressure Greater than 90 Psig,Exceeding Tech Spec Range.Caused by Valve Leaking from Condensate Transfer Sys Into RHR Discharge Piping.Mod Implemented | |
| 05000254/LER-1983-016, Forwards LER 83-016/03L-0 | Forwards LER 83-016/03L-0 | |
| 05000265/LER-1983-017-03, /03L-0:on 830924,during RCIC Turbine Area High Temp Switch Calibr QIS-28,temp Switches TS 2-1360-15B,16B & 14D Tripped Above Tech Spec Limit.Caused by Setpoint Drift. Switches Replaced | /03L-0:on 830924,during RCIC Turbine Area High Temp Switch Calibr QIS-28,temp Switches TS 2-1360-15B,16B & 14D Tripped Above Tech Spec Limit.Caused by Setpoint Drift. Switches Replaced | |
