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creation date: 2025-12-07T22:04:31-05:00
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05000456/LER-1989-014-05, :on 891030,inadvertent Safety Injection Occurred on Train B During Installation of Card Holders. Caused by Personnel Error Design Deficiency.Sys Mod Request Submitted
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LER-1990-010-02, :on 900609,reactor Trip Occurred During Plant Startup from Low Steam Generator Water Level.Caused by Malfunctioning Bypass Feedwater Regulating Valve.Operator Training Provided
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wiki page sort key: 05000457/LER-1990-010-02, :on 900609,reactor Trip Occurred During Plant Startup from Low Steam Generator Water Level.Caused by Malfunctioning Bypass Feedwater Regulating Valve.Operator Training Provided

LER-1990-007-04, :on 900601,during Removal of Ohmmeter Probe, Operator Touched Probe to Exposed Terminal Point,Resulting in Automatic Start of Auxiliary Feedwater Pump 1A.Caused by Methodology Deficiency.Probes Modified
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wiki page sort key: 05000456/LER-1990-007-04, :on 900601,during Removal of Ohmmeter Probe, Operator Touched Probe to Exposed Terminal Point,Resulting in Automatic Start of Auxiliary Feedwater Pump 1A.Caused by Methodology Deficiency.Probes Modified

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05000456/LER-1988-012, Advises That LER 88-012-00 Withdrawn.Investigation Revealed That Operator Did Indicate That Room Temps Less than Tech Spec Limits
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05000455/LER-1986-001, Errata to LER 86-001-00,incorporating Page 4 Inadvertently Omitted from Original LER Re Crosby Relief Valve JO-25WR
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Uncorrected Setpoints,Allowable Tech Spec Value Would Have Been Exceeded.Caused by Unclear Design Documents.Analysis of Setpoints Performed
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LER-1989-004-04, :on 890306,auxiliary Feedwater Pumps Started Automatically Following Closure of Governor Valves.Caused by Defective Test Switch.Stable Plant Conditions Established. Temporary Procedure Changes Initiated
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wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-004-04, :on 890306,auxiliary Feedwater Pumps Started Automatically Following Closure of Governor Valves.Caused by Defective Test Switch.Stable Plant Conditions Established. Temporary Procedure Changes Initiated

LER-1989-009-05, :on 890902,failure of Main Steamline Safety Valve to Reseat Occurred.Caused by Preservice Error in Design of Valve.Vendor Recommended Upgrade Will Be Installed on Valve 1MSO17C.Remaining Valves Checked
type: Subject
label: 05000456/LER-1989-009-05, :on 890902,failure of Main Steamline Safety Valve to Reseat Occurred.Caused by Preservice Error in Design of Valve.Vendor Recommended Upgrade Will Be Installed on Valve 1MSO17C.Remaining Valves Checked
page: https://kanterella.com/05000456/LER-2D1989-2D009-2D05-2C_-3Aon_890902-2Cfailure_of_Main_Steamline_Safety_Valve_to_Reseat_Occurred.Caused_by_Preservice_Error_in_Design_of_Valve.Vendor_Recommended_Upgra…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-009-05, :on 890902,failure of Main Steamline Safety Valve to Reseat Occurred.Caused by Preservice Error in Design of Valve.Vendor Recommended Upgrade Will Be Installed on Valve 1MSO17C.Remaining Valves Checked

LER-1989-003-05, :on 890302,control Room Ventilation Actuations Due to Momentary Loss of Voltage to Radiation Monitors. Caused by Perturbation of 345 Kv Sys.Evaluation Performed on Area & Process Radiation Monitors
type: Subject
label: 05000456/LER-1989-003-05, :on 890302,control Room Ventilation Actuations Due to Momentary Loss of Voltage to Radiation Monitors. Caused by Perturbation of 345 Kv Sys.Evaluation Performed on Area & Process Radiation Monitors
page: https://kanterella.com/05000456/LER-2D1989-2D003-2D05-2C_-3Aon_890302-2Ccontrol_Room_Ventilation_Actuations_Due_to_Momentary_Loss_of_Voltage_to_Radiation_Monitors._Caused_by_Perturbation_of_345_Kv_Sys…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-003-05, :on 890302,control Room Ventilation Actuations Due to Momentary Loss of Voltage to Radiation Monitors. Caused by Perturbation of 345 Kv Sys.Evaluation Performed on Area & Process Radiation Monitors

LER-1989-005-06, :on 890422,instrument Inverter 111 Tripped & Repair Not Completed within 24 H Per Tech Spec.Caused by Shorted Capacitor Due to Normal Wear.Instrument Bus Energized & Inverter Repaired
type: Subject
label: 05000456/LER-1989-005-06, :on 890422,instrument Inverter 111 Tripped & Repair Not Completed within 24 H Per Tech Spec.Caused by Shorted Capacitor Due to Normal Wear.Instrument Bus Energized & Inverter Repaired
page: https://kanterella.com/05000456/LER-2D1989-2D005-2D06-2C_-3Aon_890422-2Cinstrument_Inverter_111_Tripped_-26_Repair_Not_Completed_within_24_H_Per_Tech_Spec.Caused_by_Shorted_Capacitor_Due_to_Normal_Wea…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-005-06, :on 890422,instrument Inverter 111 Tripped & Repair Not Completed within 24 H Per Tech Spec.Caused by Shorted Capacitor Due to Normal Wear.Instrument Bus Energized & Inverter Repaired

LER-1989-007-08, :on 890810,containment Bldg Fuel Handling Incident Area Radiation Monitor Went Into Alert Alarm & Interlock Actuation Due to Loss of Pulses.Caused by Failed High Voltage Power Supply in Monitor
type: Subject
label: 05000456/LER-1989-007-08, :on 890810,containment Bldg Fuel Handling Incident Area Radiation Monitor Went Into Alert Alarm & Interlock Actuation Due to Loss of Pulses.Caused by Failed High Voltage Power Supply in Monitor
page: https://kanterella.com/05000456/LER-2D1989-2D007-2D08-2C_-3Aon_890810-2Ccontainment_Bldg_Fuel_Handling_Incident_Area_Radiation_Monitor_Went_Into_Alert_Alarm_-26_Interlock_Actuation_Due_to_Loss_of_Puls…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-007-08, :on 890810,containment Bldg Fuel Handling Incident Area Radiation Monitor Went Into Alert Alarm & Interlock Actuation Due to Loss of Pulses.Caused by Failed High Voltage Power Supply in Monitor

LER-1989-001-09, :on 890223,loss of RHR 2B Loop Occurred as Result of Procedural Deficiency.Caused by Failure to Identify That Placing Ssps in Test Would Not Block auto- Closure of Pump Valves.Procedure Revised
type: Subject
label: 05000457/LER-1989-001-09, :on 890223,loss of RHR 2B Loop Occurred as Result of Procedural Deficiency.Caused by Failure to Identify That Placing Ssps in Test Would Not Block auto- Closure of Pump Valves.Procedure Revised
page: https://kanterella.com/05000457/LER-2D1989-2D001-2D09-2C_-3Aon_890223-2Closs_of_RHR_2B_Loop_Occurred_as_Result_of_Procedural_Deficiency.Caused_by_Failure_to_Identify_That_Placing_Ssps_in_Test_Would_No…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-001-09, :on 890223,loss of RHR 2B Loop Occurred as Result of Procedural Deficiency.Caused by Failure to Identify That Placing Ssps in Test Would Not Block auto- Closure of Pump Valves.Procedure Revised

LER-1989-001, :on 890206,reactor Trip Occurred Due to Spurious Loss of Output Voltage on Instrument Inverter 112. Cause of Momentary Loss of Inverter Under Investigation. Feedwater Isolation Signal Reset
type: Subject
label: 05000456/LER-1989-001, :on 890206,reactor Trip Occurred Due to Spurious Loss of Output Voltage on Instrument Inverter 112. Cause of Momentary Loss of Inverter Under Investigation. Feedwater Isolation Signal Reset
page: https://kanterella.com/05000456/LER-2D1989-2D001-2C_-3Aon_890206-2Creactor_Trip_Occurred_Due_to_Spurious_Loss_of_Output_Voltage_on_Instrument_Inverter_112._Cause_of_Momentary_Loss_of_Inverter_Under_In…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-001, :on 890206,reactor Trip Occurred Due to Spurious Loss of Output Voltage on Instrument Inverter 112. Cause of Momentary Loss of Inverter Under Investigation. Feedwater Isolation Signal Reset

LER-1989-002-09, :on 890416,main Steam Line Low Pressure Reactor Trip,Safety Injection & Main Steam Isolation Occurred.Caused by RCS Pressure Above 1,1930 Psig & Main Steam Pressure Less than 640 Psig.Heatup Procedure Will Be Revised
type: Subject
label: 05000456/LER-1989-002-09, :on 890416,main Steam Line Low Pressure Reactor Trip,Safety Injection & Main Steam Isolation Occurred.Caused by RCS Pressure Above 1,1930 Psig & Main Steam Pressure Less than 640 Psig.Heatup Procedure Will Be Revised
page: https://kanterella.com/05000456/LER-2D1989-2D002-2D09-2C_-3Aon_890416-2Cmain_Steam_Line_Low_Pressure_Reactor_Trip-2CSafety_Injection_-26_Main_Steam_Isolation_Occurred.Caused_by_RCS_Pressure_Above_1-2C…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-002-09, :on 890416,main Steam Line Low Pressure Reactor Trip,Safety Injection & Main Steam Isolation Occurred.Caused by RCS Pressure Above 1,1930 Psig & Main Steam Pressure Less than 640 Psig.Heatup Procedure Will Be Revised

LER-1989-003-01, :on 890322,centrifugal Charging Pump 2B Manual mini-flow Isolation Valve Mispositioned.On 890601, Recirculation Flow Read Zero.Caused by Personnel Error. Locked Equipment Program Will Be Revised
type: Subject
label: 05000457/LER-1989-003-01, :on 890322,centrifugal Charging Pump 2B Manual mini-flow Isolation Valve Mispositioned.On 890601, Recirculation Flow Read Zero.Caused by Personnel Error. Locked Equipment Program Will Be Revised
page: https://kanterella.com/05000457/LER-2D1989-2D003-2D01-2C_-3Aon_890322-2Ccentrifugal_Charging_Pump_2B_Manual_mini-2Dflow_Isolation_Valve_Mispositioned.On_890601-2C_Recirculation_Flow_Read_Zero.Caused_b…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-003-01, :on 890322,centrifugal Charging Pump 2B Manual mini-flow Isolation Valve Mispositioned.On 890601, Recirculation Flow Read Zero.Caused by Personnel Error. Locked Equipment Program Will Be Revised

LER-1989-006-09, :on 890718,lightning-induced Voltage Transients Experienced,Resulting in Actuation of Multiple Rod Drive Overvoltage Protection Devices.Caused by Inadequate Lightning Protection.Protectors Reset
type: Subject
label: 05000456/LER-1989-006-09, :on 890718,lightning-induced Voltage Transients Experienced,Resulting in Actuation of Multiple Rod Drive Overvoltage Protection Devices.Caused by Inadequate Lightning Protection.Protectors Reset
page: https://kanterella.com/05000456/LER-2D1989-2D006-2D09-2C_-3Aon_890718-2Clightning-2Dinduced_Voltage_Transients_Experienced-2CResulting_in_Actuation_of_Multiple_Rod_Drive_Overvoltage_Protection_Devices…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-006-09, :on 890718,lightning-induced Voltage Transients Experienced,Resulting in Actuation of Multiple Rod Drive Overvoltage Protection Devices.Caused by Inadequate Lightning Protection.Protectors Reset

Calibr.Caused by Personnel Error.Test Rept Revised
type: Subject
label: 05000456/LER-1988-002-04, :on 880125,reactor Trip & Safety Injection Generated During Performance of Instrument Surveillance Analog Operational Test & Channel Verification/Calibr.Caused by Personnel Error.Test Rept Revised
page: https://kanterella.com/05000456/LER-2D1988-2D002-2D04-2C_-3Aon_880125-2Creactor_Trip_-26_Safety_Injection_Generated_During_Performance_of_Instrument_Surveillance_Analog_Operational_Test_-26_Channel_Ve…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-002-04, :on 880125,reactor Trip & Safety Injection Generated During Performance of Instrument Surveillance Analog Operational Test & Channel Verification/Calibr.Caused by Personnel Error.Test Rept Revised

LER-1987-057, :on 871009,as Throttle Valve 2 Being Cycled, MW Output Became Erratic Resulting in Reactor Trip.Root Cause Indeterminate.Temporary Instrumentation Installed on Sensing Line of Turbine Impulse Transmitter
type: Subject
label: 05000456/LER-1987-057, :on 871009,as Throttle Valve 2 Being Cycled, MW Output Became Erratic Resulting in Reactor Trip.Root Cause Indeterminate.Temporary Instrumentation Installed on Sensing Line of Turbine Impulse Transmitter
page: https://kanterella.com/05000456/LER-2D1987-2D057-2C_-3Aon_871009-2Cas_Throttle_Valve_2_Being_Cycled-2C_MW_Output_Became_Erratic_Resulting_in_Reactor_Trip.Root_Cause_Indeterminate.Temporary_Instrumenta…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1987-057, :on 871009,as Throttle Valve 2 Being Cycled, MW Output Became Erratic Resulting in Reactor Trip.Root Cause Indeterminate.Temporary Instrumentation Installed on Sensing Line of Turbine Impulse Transmitter

LER-1988-029-02, :on 881025,reactor Manually Tripped When Alarm Received at Main Control Panel for High Suction Strainer Differential Pressure for Condensate Pumps 2A & 2C.Caused by Plugged Suction Strainers.Condenser Cleaned
type: Subject
label: 05000457/LER-1988-029-02, :on 881025,reactor Manually Tripped When Alarm Received at Main Control Panel for High Suction Strainer Differential Pressure for Condensate Pumps 2A & 2C.Caused by Plugged Suction Strainers.Condenser Cleaned
page: https://kanterella.com/05000457/LER-2D1988-2D029-2D02-2C_-3Aon_881025-2Creactor_Manually_Tripped_When_Alarm_Received_at_Main_Control_Panel_for_High_Suction_Strainer_Differential_Pressure_for_Condensat…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-029-02, :on 881025,reactor Manually Tripped When Alarm Received at Main Control Panel for High Suction Strainer Differential Pressure for Condensate Pumps 2A & 2C.Caused by Plugged Suction Strainers.Condenser Cleaned

LER-1987-018-03, :on 870811,reactor Trip Occurred.Caused by Trip of Main Feedwater Pump Due to Broken Wire on Proximity Probe.Feedwater Supervisory Instrumentation Repaired & Calibr & Automatic Trips on Pumps Disabled
type: Subject
label: 05000454/LER-1987-018-03, :on 870811,reactor Trip Occurred.Caused by Trip of Main Feedwater Pump Due to Broken Wire on Proximity Probe.Feedwater Supervisory Instrumentation Repaired & Calibr & Automatic Trips on Pumps Disabled
page: https://kanterella.com/05000454/LER-2D1987-2D018-2D03-2C_-3Aon_870811-2Creactor_Trip_Occurred.Caused_by_Trip_of_Main_Feedwater_Pump_Due_to_Broken_Wire_on_Proximity_Probe.Feedwater_Supervisory_Instrume…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-018-03, :on 870811,reactor Trip Occurred.Caused by Trip of Main Feedwater Pump Due to Broken Wire on Proximity Probe.Feedwater Supervisory Instrumentation Repaired & Calibr & Automatic Trips on Pumps Disabled

LER-1987-019-03, :on 870812,safety Injection & Reactor Trip from Low Steam Line Pressure Occurred Due to Failed Main Turbine Throttle.Caused by Failed Moog Servo Valve.Valve Replaced & Procedures Revised
type: Subject
label: 05000454/LER-1987-019-03, :on 870812,safety Injection & Reactor Trip from Low Steam Line Pressure Occurred Due to Failed Main Turbine Throttle.Caused by Failed Moog Servo Valve.Valve Replaced & Procedures Revised
page: https://kanterella.com/05000454/LER-2D1987-2D019-2D03-2C_-3Aon_870812-2Csafety_Injection_-26_Reactor_Trip_from_Low_Steam_Line_Pressure_Occurred_Due_to_Failed_Main_Turbine_Throttle.Caused_by_Failed_Moo…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-019-03, :on 870812,safety Injection & Reactor Trip from Low Steam Line Pressure Occurred Due to Failed Main Turbine Throttle.Caused by Failed Moog Servo Valve.Valve Replaced & Procedures Revised

LER-1987-006-01, :on 870427,reactor Tripped Due to Pressurizer Pressure Spiked Below Reactor Trip Setpoint.Caused by Failure of Pressurizer Pressure Transmitter & Nuclear Loop Power Supply on Channel 456
type: Subject
label: 05000455/LER-1987-006-01, :on 870427,reactor Tripped Due to Pressurizer Pressure Spiked Below Reactor Trip Setpoint.Caused by Failure of Pressurizer Pressure Transmitter & Nuclear Loop Power Supply on Channel 456
page: https://kanterella.com/05000455/LER-2D1987-2D006-2D01-2C_-3Aon_870427-2Creactor_Tripped_Due_to_Pressurizer_Pressure_Spiked_Below_Reactor_Trip_Setpoint.Caused_by_Failure_of_Pressurizer_Pressure_Transmi…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-006-01, :on 870427,reactor Tripped Due to Pressurizer Pressure Spiked Below Reactor Trip Setpoint.Caused by Failure of Pressurizer Pressure Transmitter & Nuclear Loop Power Supply on Channel 456

LER-1987-007, :on 870504,reactor Tripped During Performance of Quarterly Power Range Calibr Surveillance on Channel NI-43(IG).Caused by Trip of Bus 211 Due to Failure of Wornout Capacitor.Inverter Repaired & Tested
type: Subject
label: 05000455/LER-1987-007, :on 870504,reactor Tripped During Performance of Quarterly Power Range Calibr Surveillance on Channel NI-43(IG).Caused by Trip of Bus 211 Due to Failure of Wornout Capacitor.Inverter Repaired & Tested
page: https://kanterella.com/05000455/LER-2D1987-2D007-2C_-3Aon_870504-2Creactor_Tripped_During_Performance_of_Quarterly_Power_Range_Calibr_Surveillance_on_Channel_NI-2D43-28IG-29.Caused_by_Trip_of_Bus_211_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-007, :on 870504,reactor Tripped During Performance of Quarterly Power Range Calibr Surveillance on Channel NI-43(IG).Caused by Trip of Bus 211 Due to Failure of Wornout Capacitor.Inverter Repaired & Tested

LER-1987-011-08, :on 870725,reactor Tripped on Overtemp Delta T Condition.Caused by Inability of Plant Secondary Side to Remove Heat Generated by Primary Side & Controller Inability to Accept Large Load Reject in Valve Mode
type: Subject
label: 05000455/LER-1987-011-08, :on 870725,reactor Tripped on Overtemp Delta T Condition.Caused by Inability of Plant Secondary Side to Remove Heat Generated by Primary Side & Controller Inability to Accept Large Load Reject in Valve Mode
page: https://kanterella.com/05000455/LER-2D1987-2D011-2D08-2C_-3Aon_870725-2Creactor_Tripped_on_Overtemp_Delta_T_Condition.Caused_by_Inability_of_Plant_Secondary_Side_to_Remove_Heat_Generated_by_Primary_Si…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-011-08, :on 870725,reactor Tripped on Overtemp Delta T Condition.Caused by Inability of Plant Secondary Side to Remove Heat Generated by Primary Side & Controller Inability to Accept Large Load Reject in Valve Mode

LER-1987-017-03, :on 870729 & 31,de-energization of Power Supplies in Rod Drive Sys Caused Reactor Trips.Caused by Lightning Strikes.Power Supply Overvoltage Protection Circuits Reset & Verified Operable
type: Subject
label: 05000454/LER-1987-017-03, :on 870729 & 31,de-energization of Power Supplies in Rod Drive Sys Caused Reactor Trips.Caused by Lightning Strikes.Power Supply Overvoltage Protection Circuits Reset & Verified Operable
page: https://kanterella.com/05000454/LER-2D1987-2D017-2D03-2C_-3Aon_870729_-26_31-2Cde-2Denergization_of_Power_Supplies_in_Rod_Drive_Sys_Caused_Reactor_Trips.Caused_by_Lightning_Strikes.Power_Supply_Overvo…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-017-03, :on 870729 & 31,de-energization of Power Supplies in Rod Drive Sys Caused Reactor Trips.Caused by Lightning Strikes.Power Supply Overvoltage Protection Circuits Reset & Verified Operable

LER-1987-012-07, :on 870730,2B Diesel Generator Failed to Reach Rated Speed within Required Time Limit.Caused by Instrument Drift of Pressure Indicator.Faulty Indicator & Turbocharger Replaced & Air Regulator Correctly Set
type: Subject
label: 05000455/LER-1987-012-07, :on 870730,2B Diesel Generator Failed to Reach Rated Speed within Required Time Limit.Caused by Instrument Drift of Pressure Indicator.Faulty Indicator & Turbocharger Replaced & Air Regulator Correctly Set
page: https://kanterella.com/05000455/LER-2D1987-2D012-2D07-2C_-3Aon_870730-2C2B_Diesel_Generator_Failed_to_Reach_Rated_Speed_within_Required_Time_Limit.Caused_by_Instrument_Drift_of_Pressure_Indicator.Faul…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-012-07, :on 870730,2B Diesel Generator Failed to Reach Rated Speed within Required Time Limit.Caused by Instrument Drift of Pressure Indicator.Faulty Indicator & Turbocharger Replaced & Air Regulator Correctly Set

LER-1987-022-03, :on 871026,area Radiation Monitor Spiked Above Alert Alarm Setpoint,Resulting in Containment Ventilation Isolation Alarm.Caused by Faulty Detector.Detector Replaced & Monitor Returned to Svc on 871029
type: Subject
label: 05000454/LER-1987-022-03, :on 871026,area Radiation Monitor Spiked Above Alert Alarm Setpoint,Resulting in Containment Ventilation Isolation Alarm.Caused by Faulty Detector.Detector Replaced & Monitor Returned to Svc on 871029
page: https://kanterella.com/05000454/LER-2D1987-2D022-2D03-2C_-3Aon_871026-2Carea_Radiation_Monitor_Spiked_Above_Alert_Alarm_Setpoint-2CResulting_in_Containment_Ventilation_Isolation_Alarm.Caused_by_Faulty…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-022-03, :on 871026,area Radiation Monitor Spiked Above Alert Alarm Setpoint,Resulting in Containment Ventilation Isolation Alarm.Caused by Faulty Detector.Detector Replaced & Monitor Returned to Svc on 871029

Low Power Physics start-up Test Requiring Bistable Trip,Reactor Trip Occurred.Caused by Reactor Coolant Resistance Temp Detector Splice Failure.Splice Connection Corrected
type: Subject
label: 05000455/LER-1987-001-01, :on 870115,during Initial Criticality/Low Power Physics start-up Test Requiring Bistable Trip,Reactor Trip Occurred.Caused by Reactor Coolant Resistance Temp Detector Splice Failure.Splice Connection Corrected
page: https://kanterella.com/05000455/LER-2D1987-2D001-2D01-2C_-3Aon_870115-2Cduring_Initial_Criticality/Low_Power_Physics_start-2Dup_Test_Requiring_Bistable_Trip-2CReactor_Trip_Occurred.Caused_by_Reactor_C…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-001-01, :on 870115,during Initial Criticality/Low Power Physics start-up Test Requiring Bistable Trip,Reactor Trip Occurred.Caused by Reactor Coolant Resistance Temp Detector Splice Failure.Splice Connection Corrected

LER-1989-003-10, :on 890322,discovered Mispositioning of Centrifugal Charging Pump 2B Manual Mini Flow Isolation Valve.Caused by Personnel Error.Valve Immediately Opened. Independent Verification Program to Be Revised
type: Subject
label: 05000457/LER-1989-003-10, :on 890322,discovered Mispositioning of Centrifugal Charging Pump 2B Manual Mini Flow Isolation Valve.Caused by Personnel Error.Valve Immediately Opened. Independent Verification Program to Be Revised
page: https://kanterella.com/05000457/LER-2D1989-2D003-2D10-2C_-3Aon_890322-2Cdiscovered_Mispositioning_of_Centrifugal_Charging_Pump_2B_Manual_Mini_Flow_Isolation_Valve.Caused_by_Personnel_Error.Valve_Immed…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-003-10, :on 890322,discovered Mispositioning of Centrifugal Charging Pump 2B Manual Mini Flow Isolation Valve.Caused by Personnel Error.Valve Immediately Opened. Independent Verification Program to Be Revised

LER-1987-009-08, :on 870629,manual Reactor Trip Initiated Due to 2C (Turbine Driven) Main Feedwater Pump Trip.Caused by Cold Solder Joint on Capacitor in Speed Control Feedback Loop. Solder Joint Repaired & Tested
type: Subject
label: 05000455/LER-1987-009-08, :on 870629,manual Reactor Trip Initiated Due to 2C (Turbine Driven) Main Feedwater Pump Trip.Caused by Cold Solder Joint on Capacitor in Speed Control Feedback Loop. Solder Joint Repaired & Tested
page: https://kanterella.com/05000455/LER-2D1987-2D009-2D08-2C_-3Aon_870629-2Cmanual_Reactor_Trip_Initiated_Due_to_2C_-28Turbine_Driven-29_Main_Feedwater_Pump_Trip.Caused_by_Cold_Solder_Joint_on_Capacitor_i…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-009-08, :on 870629,manual Reactor Trip Initiated Due to 2C (Turbine Driven) Main Feedwater Pump Trip.Caused by Cold Solder Joint on Capacitor in Speed Control Feedback Loop. Solder Joint Repaired & Tested

LER-1987-010-07, :on 870701,manual Reactor Trip Occurred Due to Electrohydraulic Pump Manual Trip Necessitated by Fluid Leak.Caused by Vibration.Supply Line to Fullers Earth Filter Removed & Valve & Nipple Installed
type: Subject
label: 05000455/LER-1987-010-07, :on 870701,manual Reactor Trip Occurred Due to Electrohydraulic Pump Manual Trip Necessitated by Fluid Leak.Caused by Vibration.Supply Line to Fullers Earth Filter Removed & Valve & Nipple Installed
page: https://kanterella.com/05000455/LER-2D1987-2D010-2D07-2C_-3Aon_870701-2Cmanual_Reactor_Trip_Occurred_Due_to_Electrohydraulic_Pump_Manual_Trip_Necessitated_by_Fluid_Leak.Caused_by_Vibration.Supply_Line…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-010-07, :on 870701,manual Reactor Trip Occurred Due to Electrohydraulic Pump Manual Trip Necessitated by Fluid Leak.Caused by Vibration.Supply Line to Fullers Earth Filter Removed & Valve & Nipple Installed

LER-1987-011-01, :on 870415,carbon Dioxide Sys to Auxiliary Feedwater Pump Room Declared Inoperable.Caused by Vapor Pilot Valve Mispositioned,Closed & Not Included on Design Documents.Valve Opened & Placed on Drawings
type: Subject
label: 05000454/LER-1987-011-01, :on 870415,carbon Dioxide Sys to Auxiliary Feedwater Pump Room Declared Inoperable.Caused by Vapor Pilot Valve Mispositioned,Closed & Not Included on Design Documents.Valve Opened & Placed on Drawings
page: https://kanterella.com/05000454/LER-2D1987-2D011-2D01-2C_-3Aon_870415-2Ccarbon_Dioxide_Sys_to_Auxiliary_Feedwater_Pump_Room_Declared_Inoperable.Caused_by_Vapor_Pilot_Valve_Mispositioned-2CClosed_-26_N…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-011-01, :on 870415,carbon Dioxide Sys to Auxiliary Feedwater Pump Room Declared Inoperable.Caused by Vapor Pilot Valve Mispositioned,Closed & Not Included on Design Documents.Valve Opened & Placed on Drawings

Operating Dept for 6 Wks
type: Subject
label: 05000455/LER-1987-016, :on 870831,during Surveillance Test,Inadvertent Train a Safety Injection Occurred.Caused by Personnel Communication Breakdown.Prof Program Will Be Covered W/ Operating Dept for 6 Wks
page: https://kanterella.com/05000455/LER-2D1987-2D016-2C_-3Aon_870831-2Cduring_Surveillance_Test-2CInadvertent_Train_a_Safety_Injection_Occurred.Caused_by_Personnel_Communication_Breakdown.Prof_Program_Wil…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-016, :on 870831,during Surveillance Test,Inadvertent Train a Safety Injection Occurred.Caused by Personnel Communication Breakdown.Prof Program Will Be Covered W/ Operating Dept for 6 Wks

LER-1989-001-07, :on 890206,momentary Loss of Output Voltage on Instrument Inverter 112 Caused Reactor Trip Signal Due to Intermediate Range High Flux Bistable from Channel N36 Reverting to ESF Safe Configuration
type: Subject
label: 05000456/LER-1989-001-07, :on 890206,momentary Loss of Output Voltage on Instrument Inverter 112 Caused Reactor Trip Signal Due to Intermediate Range High Flux Bistable from Channel N36 Reverting to ESF Safe Configuration
page: https://kanterella.com/05000456/LER-2D1989-2D001-2D07-2C_-3Aon_890206-2Cmomentary_Loss_of_Output_Voltage_on_Instrument_Inverter_112_Caused_Reactor_Trip_Signal_Due_to_Intermediate_Range_High_Flux_Bista…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-001-07, :on 890206,momentary Loss of Output Voltage on Instrument Inverter 112 Caused Reactor Trip Signal Due to Intermediate Range High Flux Bistable from Channel N36 Reverting to ESF Safe Configuration

LER-1988-011-01, Withdraws LER 88-011-01 Re Reactor Shutdown as Result of Valve 2SI89089B Declared Inoperable Due to non-environ Qualified Motor.Addl Info Submitted Proved Motor Was Environ Qualified to Required Stds & No Shutdown Required
type: Subject
label: 05000457/LER-1988-011-01, Withdraws LER 88-011-01 Re Reactor Shutdown as Result of Valve 2SI89089B Declared Inoperable Due to non-environ Qualified Motor.Addl Info Submitted Proved Motor Was Environ Qualified to Required Stds & No Shutdown Required
page: https://kanterella.com/05000457/LER-2D1988-2D011-2D01-2C_Withdraws_LER_88-2D011-2D01_Re_Reactor_Shutdown_as_Result_of_Valve_2SI89089B_Declared_Inoperable_Due_to_non-2Denviron_Qualified_Motor.Addl_Info…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-011-01, Withdraws LER 88-011-01 Re Reactor Shutdown as Result of Valve 2SI89089B Declared Inoperable Due to non-environ Qualified Motor.Addl Info Submitted Proved Motor Was Environ Qualified to Required Stds & No Shutdown Required

O Completing Required post-maint Testing. Caused by Cognitive Personnel Error.Training on Proper Completion of Checklist Will Be Given
type: Subject
label: 05000455/LER-1987-017-05, :on 870903,main Steam Isolation Bypass Valve Returned to Svc W/O Completing Required post-maint Testing. Caused by Cognitive Personnel Error.Training on Proper Completion of Checklist Will Be Given
page: https://kanterella.com/05000455/LER-2D1987-2D017-2D05-2C_-3Aon_870903-2Cmain_Steam_Isolation_Bypass_Valve_Returned_to_Svc_W/O_Completing_Required_post-2Dmaint_Testing._Caused_by_Cognitive_Personnel_Er…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-017-05, :on 870903,main Steam Isolation Bypass Valve Returned to Svc W/O Completing Required post-maint Testing. Caused by Cognitive Personnel Error.Training on Proper Completion of Checklist Will Be Given

LER-1987-021-03, :on 870917,control Room Ventilation Actuation Occurred Due to Distribution Sys Voltage Transient When Offsite Line Tripped.Mods Installed in 1985 to Reduce Undervoltage Trip Setpoints on All Process
type: Subject
label: 05000454/LER-1987-021-03, :on 870917,control Room Ventilation Actuation Occurred Due to Distribution Sys Voltage Transient When Offsite Line Tripped.Mods Installed in 1985 to Reduce Undervoltage Trip Setpoints on All Process
page: https://kanterella.com/05000454/LER-2D1987-2D021-2D03-2C_-3Aon_870917-2Ccontrol_Room_Ventilation_Actuation_Occurred_Due_to_Distribution_Sys_Voltage_Transient_When_Offsite_Line_Tripped.Mods_Installed_i…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-021-03, :on 870917,control Room Ventilation Actuation Occurred Due to Distribution Sys Voltage Transient When Offsite Line Tripped.Mods Installed in 1985 to Reduce Undervoltage Trip Setpoints on All Process

LER-1987-020-03, :on 870902,contractor Assigned Continuous Fire Watch Left Assigned Watch Area to Rept for Whole Body Count Processing.Caused by Cognitive Personnel Error.Personnel Given Sheet Listing Responsibilities
type: Subject
label: 05000454/LER-1987-020-03, :on 870902,contractor Assigned Continuous Fire Watch Left Assigned Watch Area to Rept for Whole Body Count Processing.Caused by Cognitive Personnel Error.Personnel Given Sheet Listing Responsibilities
page: https://kanterella.com/05000454/LER-2D1987-2D020-2D03-2C_-3Aon_870902-2Ccontractor_Assigned_Continuous_Fire_Watch_Left_Assigned_Watch_Area_to_Rept_for_Whole_Body_Count_Processing.Caused_by_Cognitive_P…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-020-03, :on 870902,contractor Assigned Continuous Fire Watch Left Assigned Watch Area to Rept for Whole Body Count Processing.Caused by Cognitive Personnel Error.Personnel Given Sheet Listing Responsibilities

LER-1988-025, :on 880926,verified That Monthly Target Axial Flux Difference Surveillance Not Performed.Caused by Personnel Error.Calculated New Target Values for Delta 1, Updated Curve Book & Processed Computer
type: Subject
label: 05000457/LER-1988-025, :on 880926,verified That Monthly Target Axial Flux Difference Surveillance Not Performed.Caused by Personnel Error.Calculated New Target Values for Delta 1, Updated Curve Book & Processed Computer
page: https://kanterella.com/05000457/LER-2D1988-2D025-2C_-3Aon_880926-2Cverified_That_Monthly_Target_Axial_Flux_Difference_Surveillance_Not_Performed.Caused_by_Personnel_Error.Calculated_New_Target_Values_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-025, :on 880926,verified That Monthly Target Axial Flux Difference Surveillance Not Performed.Caused by Personnel Error.Calculated New Target Values for Delta 1, Updated Curve Book & Processed Computer

LER-1987-015-07, :on 870829,feedwater Isolation Actuation on Steam Generator Level high-2 Occurred.Caused by Personnel Error.Personnel counseled.Color-coding of Instruments to Prevent Error Under Investigation
type: Subject
label: 05000455/LER-1987-015-07, :on 870829,feedwater Isolation Actuation on Steam Generator Level high-2 Occurred.Caused by Personnel Error.Personnel counseled.Color-coding of Instruments to Prevent Error Under Investigation
page: https://kanterella.com/05000455/LER-2D1987-2D015-2D07-2C_-3Aon_870829-2Cfeedwater_Isolation_Actuation_on_Steam_Generator_Level_high-2D2_Occurred.Caused_by_Personnel_Error.Personnel_counseled.Color-2Dc…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-015-07, :on 870829,feedwater Isolation Actuation on Steam Generator Level high-2 Occurred.Caused by Personnel Error.Personnel counseled.Color-coding of Instruments to Prevent Error Under Investigation

05000454/LER-1987-016-05, :on 870831,inadvertent Train a Safety Injection Occurred During Surveillance Test.Caused by Personnel Error. Disciplinary Action Given to Involved Nuclear Station Operators
type: Subject
page: https://kanterella.com/05000454/LER-2D1987-2D016-2D05-2C_-3Aon_870831-2Cinadvertent_Train_a_Safety_Injection_Occurred_During_Surveillance_Test.Caused_by_Personnel_Error._Disciplinary_Action_Given_to_I…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-016-05, :on 870831,inadvertent Train a Safety Injection Occurred During Surveillance Test.Caused by Personnel Error. Disciplinary Action Given to Involved Nuclear Station Operators

LER-1987-008-08, :on 870606,containment mini-purge Supply & Exhaust Ventilation Sys Simultaneously Put Into Operation. Caused by Personnel Error & Procedural Inadequacy.Personnel Involved Disciplined & Procedure Changed
type: Subject
label: 05000455/LER-1987-008-08, :on 870606,containment mini-purge Supply & Exhaust Ventilation Sys Simultaneously Put Into Operation. Caused by Personnel Error & Procedural Inadequacy.Personnel Involved Disciplined & Procedure Changed
page: https://kanterella.com/05000455/LER-2D1987-2D008-2D08-2C_-3Aon_870606-2Ccontainment_mini-2Dpurge_Supply_-26_Exhaust_Ventilation_Sys_Simultaneously_Put_Into_Operation._Caused_by_Personnel_Error_-26_Pro…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-008-08, :on 870606,containment mini-purge Supply & Exhaust Ventilation Sys Simultaneously Put Into Operation. Caused by Personnel Error & Procedural Inadequacy.Personnel Involved Disciplined & Procedure Changed

LER-1987-013-07, :on 870819,deviation from FSAR Description Not Reported within One Month as Required by License Condition 2.C.3.Caused by Personnel Error.Memo Emphasizing Need for Notification of FSAR Deviations Issued
type: Subject
label: 05000455/LER-1987-013-07, :on 870819,deviation from FSAR Description Not Reported within One Month as Required by License Condition 2.C.3.Caused by Personnel Error.Memo Emphasizing Need for Notification of FSAR Deviations Issued
page: https://kanterella.com/05000455/LER-2D1987-2D013-2D07-2C_-3Aon_870819-2Cdeviation_from_FSAR_Description_Not_Reported_within_One_Month_as_Required_by_License_Condition_2.C.3.Caused_by_Personnel_Error.M…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-013-07, :on 870819,deviation from FSAR Description Not Reported within One Month as Required by License Condition 2.C.3.Caused by Personnel Error.Memo Emphasizing Need for Notification of FSAR Deviations Issued

LER-1987-014-06, :on 870824,primary Containment Type B Local Leakage Rate Tests of Equipment Hatch Airlock Door Gasket Interspaces Not Performed,Making Airlock Inoperable.Caused by Personnel Error.Surveillance Performed
type: Subject
label: 05000455/LER-1987-014-06, :on 870824,primary Containment Type B Local Leakage Rate Tests of Equipment Hatch Airlock Door Gasket Interspaces Not Performed,Making Airlock Inoperable.Caused by Personnel Error.Surveillance Performed
page: https://kanterella.com/05000455/LER-2D1987-2D014-2D06-2C_-3Aon_870824-2Cprimary_Containment_Type_B_Local_Leakage_Rate_Tests_of_Equipment_Hatch_Airlock_Door_Gasket_Interspaces_Not_Performed-2CMaking_Ai…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-014-06, :on 870824,primary Containment Type B Local Leakage Rate Tests of Equipment Hatch Airlock Door Gasket Interspaces Not Performed,Making Airlock Inoperable.Caused by Personnel Error.Surveillance Performed

LER-1987-020-05, :on 871202,unanticipated Water Discharged Into Primary Sys When Safety Injection Accumulators Discharge Isolation Valves Opened.Caused by Defective Procedure. Procedure Revised to Include Precaution
type: Subject
label: 05000455/LER-1987-020-05, :on 871202,unanticipated Water Discharged Into Primary Sys When Safety Injection Accumulators Discharge Isolation Valves Opened.Caused by Defective Procedure. Procedure Revised to Include Precaution
page: https://kanterella.com/05000455/LER-2D1987-2D020-2D05-2C_-3Aon_871202-2Cunanticipated_Water_Discharged_Into_Primary_Sys_When_Safety_Injection_Accumulators_Discharge_Isolation_Valves_Opened.Caused_by_D…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-020-05, :on 871202,unanticipated Water Discharged Into Primary Sys When Safety Injection Accumulators Discharge Isolation Valves Opened.Caused by Defective Procedure. Procedure Revised to Include Precaution

05000454/LER-1987-015-03, :on 870526,automatic Start of Auxiliary Feedwater Pump Occurred.Caused by Personnel Error. Disciplinary Action Taken & Operator Involved Counseled.W/
type: Subject
page: https://kanterella.com/05000454/LER-2D1987-2D015-2D03-2C_-3Aon_870526-2Cautomatic_Start_of_Auxiliary_Feedwater_Pump_Occurred.Caused_by_Personnel_Error._Disciplinary_Action_Taken_-26_Operator_Involved_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-015-03, :on 870526,automatic Start of Auxiliary Feedwater Pump Occurred.Caused by Personnel Error. Disciplinary Action Taken & Operator Involved Counseled.W/

LER-1987-016-03, :on 870526,during Mode 3,both Trains of Containment Spray Additive Sys Discovered Inoperable.Caused by Two Locked Open Isolation Valves Mispositioned Due to Procedural Deficiency.Valve Repositioned
type: Subject
label: 05000454/LER-1987-016-03, :on 870526,during Mode 3,both Trains of Containment Spray Additive Sys Discovered Inoperable.Caused by Two Locked Open Isolation Valves Mispositioned Due to Procedural Deficiency.Valve Repositioned
page: https://kanterella.com/05000454/LER-2D1987-2D016-2D03-2C_-3Aon_870526-2Cduring_Mode_3-2Cboth_Trains_of_Containment_Spray_Additive_Sys_Discovered_Inoperable.Caused_by_Two_Locked_Open_Isolation_Valves_M…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-016-03, :on 870526,during Mode 3,both Trains of Containment Spray Additive Sys Discovered Inoperable.Caused by Two Locked Open Isolation Valves Mispositioned Due to Procedural Deficiency.Valve Repositioned

O Initiating Appropriate Limiting Condition for Action Requirement.Caused by Personnel Error.Shift Engineer Counseled
type: Subject
label: 05000455/LER-1987-004-01, :on 870221,permission Given to Adjust Containment Isolation Valve 2PS9357A W/O Initiating Appropriate Limiting Condition for Action Requirement.Caused by Personnel Error.Shift Engineer Counseled
page: https://kanterella.com/05000455/LER-2D1987-2D004-2D01-2C_-3Aon_870221-2Cpermission_Given_to_Adjust_Containment_Isolation_Valve_2PS9357A_W/O_Initiating_Appropriate_Limiting_Condition_for_Action_Require…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-004-01, :on 870221,permission Given to Adjust Containment Isolation Valve 2PS9357A W/O Initiating Appropriate Limiting Condition for Action Requirement.Caused by Personnel Error.Shift Engineer Counseled

LER-1986-035, :on 861217,investigation of Possible Part 21 Rept on Cooper Bessemer Ksv Series Emergency Diesel Generators Revealed Nonseismic Switches Had Been Wired Into Engine Overspeed safety-related Trip Circuit
type: Subject
label: 05000454/LER-1986-035, :on 861217,investigation of Possible Part 21 Rept on Cooper Bessemer Ksv Series Emergency Diesel Generators Revealed Nonseismic Switches Had Been Wired Into Engine Overspeed safety-related Trip Circuit
page: https://kanterella.com/05000454/LER-2D1986-2D035-2C_-3Aon_861217-2Cinvestigation_of_Possible_Part_21_Rept_on_Cooper_Bessemer_Ksv_Series_Emergency_Diesel_Generators_Revealed_Nonseismic_Switches_Had_Bee…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-035, :on 861217,investigation of Possible Part 21 Rept on Cooper Bessemer Ksv Series Emergency Diesel Generators Revealed Nonseismic Switches Had Been Wired Into Engine Overspeed safety-related Trip Circuit

LER-1986-028-02, :on 861002,reactor Manually Tripped.Caused by Defective Firing Card & Intermittent Failure of Alarm Card. Rod Drive Sys Troubleshot,Responsible Circuit Cards Replaced & Alarm Cleared
type: Subject
label: 05000454/LER-1986-028-02, :on 861002,reactor Manually Tripped.Caused by Defective Firing Card & Intermittent Failure of Alarm Card. Rod Drive Sys Troubleshot,Responsible Circuit Cards Replaced & Alarm Cleared
page: https://kanterella.com/05000454/LER-2D1986-2D028-2D02-2C_-3Aon_861002-2Creactor_Manually_Tripped.Caused_by_Defective_Firing_Card_-26_Intermittent_Failure_of_Alarm_Card._Rod_Drive_Sys_Troubleshot-2CRes…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-028-02, :on 861002,reactor Manually Tripped.Caused by Defective Firing Card & Intermittent Failure of Alarm Card. Rod Drive Sys Troubleshot,Responsible Circuit Cards Replaced & Alarm Cleared

LER-1987-009-05, :on 870408,inadvertent Safety Injection Signal Generated During Reactor Protection Sys Surveillance Testing.Caused by 2 of 4 Coincidence Logic Due to Loose Test Lead.Personnel Cautioned
type: Subject
label: 05000454/LER-1987-009-05, :on 870408,inadvertent Safety Injection Signal Generated During Reactor Protection Sys Surveillance Testing.Caused by 2 of 4 Coincidence Logic Due to Loose Test Lead.Personnel Cautioned
page: https://kanterella.com/05000454/LER-2D1987-2D009-2D05-2C_-3Aon_870408-2Cinadvertent_Safety_Injection_Signal_Generated_During_Reactor_Protection_Sys_Surveillance_Testing.Caused_by_2_of_4_Coincidence_Lo…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-009-05, :on 870408,inadvertent Safety Injection Signal Generated During Reactor Protection Sys Surveillance Testing.Caused by 2 of 4 Coincidence Logic Due to Loose Test Lead.Personnel Cautioned

LER-1987-012-02, :on 870408,contract Maint Crew Stroked RHR HX Component Cooling Water Outlet Isolation Valve,Causing Surge Tank to Reach Low Level CC Pump Trip.Caused by Communication Breakdown Between Maint Crew & Shift Personnel
type: Subject
label: 05000454/LER-1987-012-02, :on 870408,contract Maint Crew Stroked RHR HX Component Cooling Water Outlet Isolation Valve,Causing Surge Tank to Reach Low Level CC Pump Trip.Caused by Communication Breakdown Between Maint Crew & Shift Personnel
page: https://kanterella.com/05000454/LER-2D1987-2D012-2D02-2C_-3Aon_870408-2Ccontract_Maint_Crew_Stroked_RHR_HX_Component_Cooling_Water_Outlet_Isolation_Valve-2CCausing_Surge_Tank_to_Reach_Low_Level_CC_Pum…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-012-02, :on 870408,contract Maint Crew Stroked RHR HX Component Cooling Water Outlet Isolation Valve,Causing Surge Tank to Reach Low Level CC Pump Trip.Caused by Communication Breakdown Between Maint Crew & Shift Personnel

05000454/LER-1986-012-01, :on 860327,RPI Surveillance Not Performed within 4 H.Caused by Personnel Error.Bank Demand Vs Digital RPI Surveillance Reinstated
type: Subject
page: https://kanterella.com/05000454/LER-2D1986-2D012-2D01-2C_-3Aon_860327-2CRPI_Surveillance_Not_Performed_within_4_H.Caused_by_Personnel_Error.Bank_Demand_Vs_Digital_RPI_Surveillance_Reinstated
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-012-01, :on 860327,RPI Surveillance Not Performed within 4 H.Caused by Personnel Error.Bank Demand Vs Digital RPI Surveillance Reinstated

LER-1984-031-01, :on 841215,boron Dilution Protection Sys Actuated.Caused by Electrical Noise Spikes.Triaxial Cable Connectors Disassembled & Cleaned & Heavier Gauge Grounding Wire Installed on Cabinets
type: Subject
label: 05000454/LER-1984-031-01, :on 841215,boron Dilution Protection Sys Actuated.Caused by Electrical Noise Spikes.Triaxial Cable Connectors Disassembled & Cleaned & Heavier Gauge Grounding Wire Installed on Cabinets
page: https://kanterella.com/05000454/LER-2D1984-2D031-2D01-2C_-3Aon_841215-2Cboron_Dilution_Protection_Sys_Actuated.Caused_by_Electrical_Noise_Spikes.Triaxial_Cable_Connectors_Disassembled_-26_Cleaned_-26_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-031-01, :on 841215,boron Dilution Protection Sys Actuated.Caused by Electrical Noise Spikes.Triaxial Cable Connectors Disassembled & Cleaned & Heavier Gauge Grounding Wire Installed on Cabinets

LER-1984-010, :on 841112 & 19,noise Spikes Occurred on Source Range Channel N31 Resulting in Boron Dilution Protection Sys Actuation.Caused by Personnel Error.Operator Awareness Enhanced & Note Added to Procedures
type: Subject
label: 05000454/LER-1984-010, :on 841112 & 19,noise Spikes Occurred on Source Range Channel N31 Resulting in Boron Dilution Protection Sys Actuation.Caused by Personnel Error.Operator Awareness Enhanced & Note Added to Procedures
page: https://kanterella.com/05000454/LER-2D1984-2D010-2C_-3Aon_841112_-26_19-2Cnoise_Spikes_Occurred_on_Source_Range_Channel_N31_Resulting_in_Boron_Dilution_Protection_Sys_Actuation.Caused_by_Personnel_Err…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-010, :on 841112 & 19,noise Spikes Occurred on Source Range Channel N31 Resulting in Boron Dilution Protection Sys Actuation.Caused by Personnel Error.Operator Awareness Enhanced & Note Added to Procedures

LER-1986-026-01, :on 860921,actuation of Control Room Ventilation Occurred.Caused by Lightning Strike on Offsite 138 Kv Transmission Line.Mods Installed in 1985 to Reduce Undervoltage Trip Setpoint
type: Subject
label: 05000454/LER-1986-026-01, :on 860921,actuation of Control Room Ventilation Occurred.Caused by Lightning Strike on Offsite 138 Kv Transmission Line.Mods Installed in 1985 to Reduce Undervoltage Trip Setpoint
page: https://kanterella.com/05000454/LER-2D1986-2D026-2D01-2C_-3Aon_860921-2Cactuation_of_Control_Room_Ventilation_Occurred.Caused_by_Lightning_Strike_on_Offsite_138_Kv_Transmission_Line.Mods_Installed_in_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-026-01, :on 860921,actuation of Control Room Ventilation Occurred.Caused by Lightning Strike on Offsite 138 Kv Transmission Line.Mods Installed in 1985 to Reduce Undervoltage Trip Setpoint

LER-1984-019-01, :on 841127,boron Dilution Protection Sys Actuated,Resulting in Charging Pump Suction Switchover to Rwst.Caused by Electronic Noise Spike.Triaxial Cable Connectors Disassembled & Cleaned
type: Subject
label: 05000454/LER-1984-019-01, :on 841127,boron Dilution Protection Sys Actuated,Resulting in Charging Pump Suction Switchover to Rwst.Caused by Electronic Noise Spike.Triaxial Cable Connectors Disassembled & Cleaned
page: https://kanterella.com/05000454/LER-2D1984-2D019-2D01-2C_-3Aon_841127-2Cboron_Dilution_Protection_Sys_Actuated-2CResulting_in_Charging_Pump_Suction_Switchover_to_Rwst.Caused_by_Electronic_Noise_Spike.…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-019-01, :on 841127,boron Dilution Protection Sys Actuated,Resulting in Charging Pump Suction Switchover to Rwst.Caused by Electronic Noise Spike.Triaxial Cable Connectors Disassembled & Cleaned

LER-1986-007, :on 860212,process Radiation Monitor 0PR34J Went Into Interlock Mode Due to Noise Spike on Monitor Gas Channel.Caused by Bad Edge Component or Connector on Motherboard.Motherboard Replaced
type: Subject
label: 05000454/LER-1986-007, :on 860212,process Radiation Monitor 0PR34J Went Into Interlock Mode Due to Noise Spike on Monitor Gas Channel.Caused by Bad Edge Component or Connector on Motherboard.Motherboard Replaced
page: https://kanterella.com/05000454/LER-2D1986-2D007-2C_-3Aon_860212-2Cprocess_Radiation_Monitor_0PR34J_Went_Into_Interlock_Mode_Due_to_Noise_Spike_on_Monitor_Gas_Channel.Caused_by_Bad_Edge_Component_or_C…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-007, :on 860212,process Radiation Monitor 0PR34J Went Into Interlock Mode Due to Noise Spike on Monitor Gas Channel.Caused by Bad Edge Component or Connector on Motherboard.Motherboard Replaced

LER-1986-002-10, :on 861122,digital Rod Position Indication & Bank Demand Step Counters Differed by More than 12 Steps, Requiring Opening of Reactor Trip Breakers.Caused by Defective Detector Encoder Card.Card Replaced
type: Subject
label: 05000455/LER-1986-002-10, :on 861122,digital Rod Position Indication & Bank Demand Step Counters Differed by More than 12 Steps, Requiring Opening of Reactor Trip Breakers.Caused by Defective Detector Encoder Card.Card Replaced
page: https://kanterella.com/05000455/LER-2D1986-2D002-2D10-2C_-3Aon_861122-2Cdigital_Rod_Position_Indication_-26_Bank_Demand_Step_Counters_Differed_by_More_than_12_Steps-2C_Requiring_Opening_of_Reactor_Tri…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1986-002-10, :on 861122,digital Rod Position Indication & Bank Demand Step Counters Differed by More than 12 Steps, Requiring Opening of Reactor Trip Breakers.Caused by Defective Detector Encoder Card.Card Replaced

05000454/LER-1987-014-03, :on 870505,mode Change Inoperable Steam Generator Occurred Due to Misplugged Tube.Caused by Personnel Error.Tube Plugged & Verified Correct.Personnel Counseled
type: Subject
page: https://kanterella.com/05000454/LER-2D1987-2D014-2D03-2C_-3Aon_870505-2Cmode_Change_Inoperable_Steam_Generator_Occurred_Due_to_Misplugged_Tube.Caused_by_Personnel_Error.Tube_Plugged_-26_Verified_Corre…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-014-03, :on 870505,mode Change Inoperable Steam Generator Occurred Due to Misplugged Tube.Caused by Personnel Error.Tube Plugged & Verified Correct.Personnel Counseled

LER-1987-007-06, :on 870504,reactor Tripped During Performance of Quarterly Power Range Calibr Surveillance.Cause of Capacitor Failure Undetermined But Attributable to Normal Wearout.Inverter 211 Replaced
type: Subject
label: 05000455/LER-1987-007-06, :on 870504,reactor Tripped During Performance of Quarterly Power Range Calibr Surveillance.Cause of Capacitor Failure Undetermined But Attributable to Normal Wearout.Inverter 211 Replaced
page: https://kanterella.com/05000455/LER-2D1987-2D007-2D06-2C_-3Aon_870504-2Creactor_Tripped_During_Performance_of_Quarterly_Power_Range_Calibr_Surveillance.Cause_of_Capacitor_Failure_Undetermined_But_Attr…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-007-06, :on 870504,reactor Tripped During Performance of Quarterly Power Range Calibr Surveillance.Cause of Capacitor Failure Undetermined But Attributable to Normal Wearout.Inverter 211 Replaced

LER-1987-013-03, :on 870501,reactor Trip Signal Occurred During Control Rod Position Surveillance.Caused by Momentary Loss of Level Simulation Due to Bumping of Simulation Mechanism. Precaution to Simulation Surveillance Added
type: Subject
label: 05000454/LER-1987-013-03, :on 870501,reactor Trip Signal Occurred During Control Rod Position Surveillance.Caused by Momentary Loss of Level Simulation Due to Bumping of Simulation Mechanism. Precaution to Simulation Surveillance Added
page: https://kanterella.com/05000454/LER-2D1987-2D013-2D03-2C_-3Aon_870501-2Creactor_Trip_Signal_Occurred_During_Control_Rod_Position_Surveillance.Caused_by_Momentary_Loss_of_Level_Simulation_Due_to_Bumpin…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-013-03, :on 870501,reactor Trip Signal Occurred During Control Rod Position Surveillance.Caused by Momentary Loss of Level Simulation Due to Bumping of Simulation Mechanism. Precaution to Simulation Surveillance Added

LER-1987-006-06, :on 870427,reactor Trip Occurred When Pressurizer Pressure Spiked Below Reactor Trip Setpoint. Caused by Failure of Presssure Transmitter & Nuclear Loop Power Supply During Surveillance Performance
type: Subject
label: 05000455/LER-1987-006-06, :on 870427,reactor Trip Occurred When Pressurizer Pressure Spiked Below Reactor Trip Setpoint. Caused by Failure of Presssure Transmitter & Nuclear Loop Power Supply During Surveillance Performance
page: https://kanterella.com/05000455/LER-2D1987-2D006-2D06-2C_-3Aon_870427-2Creactor_Trip_Occurred_When_Pressurizer_Pressure_Spiked_Below_Reactor_Trip_Setpoint._Caused_by_Failure_of_Presssure_Transmitter_-…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-006-06, :on 870427,reactor Trip Occurred When Pressurizer Pressure Spiked Below Reactor Trip Setpoint. Caused by Failure of Presssure Transmitter & Nuclear Loop Power Supply During Surveillance Performance

05000454/LER-1986-030-03, :on 861023,sampling Period for Inoperable Radiation Monitor Delayed for 12 H.Caused by Personnel Error,Memo Issued Reemphasizing Notification Procedures.W/
type: Subject
page: https://kanterella.com/05000454/LER-2D1986-2D030-2D03-2C_-3Aon_861023-2Csampling_Period_for_Inoperable_Radiation_Monitor_Delayed_for_12_H.Caused_by_Personnel_Error-2CMemo_Issued_Reemphasizing_Notifica…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-030-03, :on 861023,sampling Period for Inoperable Radiation Monitor Delayed for 12 H.Caused by Personnel Error,Memo Issued Reemphasizing Notification Procedures.W/

LER-1986-029-03, :on 861022,480-volt Breaker,Providing Overcurrent Protection for Electrical Penetration Feed to Containment Crane 1HC22G,discovered Not Tested Prior to Entry Into Mode 4.Caused by Personnel Error
type: Subject
label: 05000454/LER-1986-029-03, :on 861022,480-volt Breaker,Providing Overcurrent Protection for Electrical Penetration Feed to Containment Crane 1HC22G,discovered Not Tested Prior to Entry Into Mode 4.Caused by Personnel Error
page: https://kanterella.com/05000454/LER-2D1986-2D029-2D03-2C_-3Aon_861022-2C480-2Dvolt_Breaker-2CProviding_Overcurrent_Protection_for_Electrical_Penetration_Feed_to_Containment_Crane_1HC22G-2Cdiscovered_N…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-029-03, :on 861022,480-volt Breaker,Providing Overcurrent Protection for Electrical Penetration Feed to Containment Crane 1HC22G,discovered Not Tested Prior to Entry Into Mode 4.Caused by Personnel Error

LER-1987-010-05, :on 870419,Tech Spec 3.0.3 Entered Due to Two Trains of Main Control Room Ventilation Being Inoperable. Caused by Drift of High Differential Pressure Switch. Differential Pressure Switch Recalibr
type: Subject
label: 05000454/LER-1987-010-05, :on 870419,Tech Spec 3.0.3 Entered Due to Two Trains of Main Control Room Ventilation Being Inoperable. Caused by Drift of High Differential Pressure Switch. Differential Pressure Switch Recalibr
page: https://kanterella.com/05000454/LER-2D1987-2D010-2D05-2C_-3Aon_870419-2CTech_Spec_3.0.3_Entered_Due_to_Two_Trains_of_Main_Control_Room_Ventilation_Being_Inoperable._Caused_by_Drift_of_High_Differentia…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-010-05, :on 870419,Tech Spec 3.0.3 Entered Due to Two Trains of Main Control Room Ventilation Being Inoperable. Caused by Drift of High Differential Pressure Switch. Differential Pressure Switch Recalibr

LER-1987-011-03, :on 870415,auxiliary Feedwater Pump Room Sys Inoperable.On 870416,vapor Pilot Valve Discovered Closed.On 870404,vapor Pilot Valve Demonstrated Open During Inadvertent CO2 Actuation Event.Cause Unknown
type: Subject
label: 05000454/LER-1987-011-03, :on 870415,auxiliary Feedwater Pump Room Sys Inoperable.On 870416,vapor Pilot Valve Discovered Closed.On 870404,vapor Pilot Valve Demonstrated Open During Inadvertent CO2 Actuation Event.Cause Unknown
page: https://kanterella.com/05000454/LER-2D1987-2D011-2D03-2C_-3Aon_870415-2Cauxiliary_Feedwater_Pump_Room_Sys_Inoperable.On_870416-2Cvapor_Pilot_Valve_Discovered_Closed.On_870404-2Cvapor_Pilot_Valve_Demon…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-011-03, :on 870415,auxiliary Feedwater Pump Room Sys Inoperable.On 870416,vapor Pilot Valve Discovered Closed.On 870404,vapor Pilot Valve Demonstrated Open During Inadvertent CO2 Actuation Event.Cause Unknown

LER-1986-032-02, :on 861208,ESF Response Time Surveillance Discrepancy Noted in Procedure Resulting in Violation of Tech Specs.Caused by Procedure Incorrectly Timing High Steam Pressure Rate Logic Circuitry
type: Subject
label: 05000454/LER-1986-032-02, :on 861208,ESF Response Time Surveillance Discrepancy Noted in Procedure Resulting in Violation of Tech Specs.Caused by Procedure Incorrectly Timing High Steam Pressure Rate Logic Circuitry
page: https://kanterella.com/05000454/LER-2D1986-2D032-2D02-2C_-3Aon_861208-2CESF_Response_Time_Surveillance_Discrepancy_Noted_in_Procedure_Resulting_in_Violation_of_Tech_Specs.Caused_by_Procedure_Incorrect…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-032-02, :on 861208,ESF Response Time Surveillance Discrepancy Noted in Procedure Resulting in Violation of Tech Specs.Caused by Procedure Incorrectly Timing High Steam Pressure Rate Logic Circuitry

plant in Power Operation Mode 1, Main Control Room Outside Air Intake a Process Radiation Monitor Went Into Interlock Mode.Caused by Noise Spike on Monitor Particulate Channel
type: Subject
label: 05000454/LER-1986-024-02, :on 860725,w/plant in Power Operation Mode 1, Main Control Room Outside Air Intake a Process Radiation Monitor Went Into Interlock Mode.Caused by Noise Spike on Monitor Particulate Channel
page: https://kanterella.com/05000454/LER-2D1986-2D024-2D02-2C_-3Aon_860725-2Cw/plant_in_Power_Operation_Mode_1-2C_Main_Control_Room_Outside_Air_Intake_a_Process_Radiation_Monitor_Went_Into_Interlock_Mode.C…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-024-02, :on 860725,w/plant in Power Operation Mode 1, Main Control Room Outside Air Intake a Process Radiation Monitor Went Into Interlock Mode.Caused by Noise Spike on Monitor Particulate Channel

LER-1986-035-02, :on 861217,notice Received of Possible Part 21 Rept Re Cooper Bessemer Diesel Generators.Investigation Revealed That non-seismic Switches Wired Into Engine Overspeed.Caused by Design Error
type: Subject
label: 05000454/LER-1986-035-02, :on 861217,notice Received of Possible Part 21 Rept Re Cooper Bessemer Diesel Generators.Investigation Revealed That non-seismic Switches Wired Into Engine Overspeed.Caused by Design Error
page: https://kanterella.com/05000454/LER-2D1986-2D035-2D02-2C_-3Aon_861217-2Cnotice_Received_of_Possible_Part_21_Rept_Re_Cooper_Bessemer_Diesel_Generators.Investigation_Revealed_That_non-2Dseismic_Switches…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-035-02, :on 861217,notice Received of Possible Part 21 Rept Re Cooper Bessemer Diesel Generators.Investigation Revealed That non-seismic Switches Wired Into Engine Overspeed.Caused by Design Error

LER-1986-003-10, :on 861216,Safety Injection Train 2B Rendered Inoperable by Closed & out-of-svc Safety Injection Pump 2B During Hot Standby (Mode 3).Caused by Cognitive Personnel Error.Mode Change Checklists Revised
type: Subject
label: 05000455/LER-1986-003-10, :on 861216,Safety Injection Train 2B Rendered Inoperable by Closed & out-of-svc Safety Injection Pump 2B During Hot Standby (Mode 3).Caused by Cognitive Personnel Error.Mode Change Checklists Revised
page: https://kanterella.com/05000455/LER-2D1986-2D003-2D10-2C_-3Aon_861216-2CSafety_Injection_Train_2B_Rendered_Inoperable_by_Closed_-26_out-2Dof-2Dsvc_Safety_Injection_Pump_2B_During_Hot_Standby_-28Mode_3…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1986-003-10, :on 861216,Safety Injection Train 2B Rendered Inoperable by Closed & out-of-svc Safety Injection Pump 2B During Hot Standby (Mode 3).Caused by Cognitive Personnel Error.Mode Change Checklists Revised

O Required post-maint Visual Exam.Caused by Personnel Error.Visual Exams Performed
type: Subject
label: 05000454/LER-1986-031-03, :on 861121,maint Re Breaking of Nonexempt ASME Code Class 3 Pressure Boundary Strainer Completed & Returned to Svc W/O Required post-maint Visual Exam.Caused by Personnel Error.Visual Exams Performed
page: https://kanterella.com/05000454/LER-2D1986-2D031-2D03-2C_-3Aon_861121-2Cmaint_Re_Breaking_of_Nonexempt_ASME_Code_Class_3_Pressure_Boundary_Strainer_Completed_-26_Returned_to_Svc_W/O_Required_post-2Dma…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-031-03, :on 861121,maint Re Breaking of Nonexempt ASME Code Class 3 Pressure Boundary Strainer Completed & Returned to Svc W/O Required post-maint Visual Exam.Caused by Personnel Error.Visual Exams Performed

LER-1986-001-11, :on 861120,component Cooling Pumps 2A & 2B Tripped Due to Pressure Spike Caused by Shutdown of Pump 2A. Event Caused by Personnel Error in Setting Relief Valve. Valve Repaired & Reinstalled
type: Subject
label: 05000455/LER-1986-001-11, :on 861120,component Cooling Pumps 2A & 2B Tripped Due to Pressure Spike Caused by Shutdown of Pump 2A. Event Caused by Personnel Error in Setting Relief Valve. Valve Repaired & Reinstalled
page: https://kanterella.com/05000455/LER-2D1986-2D001-2D11-2C_-3Aon_861120-2Ccomponent_Cooling_Pumps_2A_-26_2B_Tripped_Due_to_Pressure_Spike_Caused_by_Shutdown_of_Pump_2A._Event_Caused_by_Personnel_Error_i…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1986-001-11, :on 861120,component Cooling Pumps 2A & 2B Tripped Due to Pressure Spike Caused by Shutdown of Pump 2A. Event Caused by Personnel Error in Setting Relief Valve. Valve Repaired & Reinstalled

LER-1986-022-03, :on 860703,during Required Shutdown to Mode 5 Due to Excessive RCS Unidentified Leak,Source Range Nuclear Instrumentation Channels Improperly Declared Operable.Caused by Personnel Error
type: Subject
label: 05000454/LER-1986-022-03, :on 860703,during Required Shutdown to Mode 5 Due to Excessive RCS Unidentified Leak,Source Range Nuclear Instrumentation Channels Improperly Declared Operable.Caused by Personnel Error
page: https://kanterella.com/05000454/LER-2D1986-2D022-2D03-2C_-3Aon_860703-2Cduring_Required_Shutdown_to_Mode_5_Due_to_Excessive_RCS_Unidentified_Leak-2CSource_Range_Nuclear_Instrumentation_Channels_Improp…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-022-03, :on 860703,during Required Shutdown to Mode 5 Due to Excessive RCS Unidentified Leak,Source Range Nuclear Instrumentation Channels Improperly Declared Operable.Caused by Personnel Error

LER-1986-027-03, :on 860930,reactor Tripped Following Feedwater Isolation & Turbine Trip Due to Damaged Test Cable.Caused by Personnel Error.Damaged Cable Repaired & Temporary Cable Will Be Installed
type: Subject
label: 05000454/LER-1986-027-03, :on 860930,reactor Tripped Following Feedwater Isolation & Turbine Trip Due to Damaged Test Cable.Caused by Personnel Error.Damaged Cable Repaired & Temporary Cable Will Be Installed
page: https://kanterella.com/05000454/LER-2D1986-2D027-2D03-2C_-3Aon_860930-2Creactor_Tripped_Following_Feedwater_Isolation_-26_Turbine_Trip_Due_to_Damaged_Test_Cable.Caused_by_Personnel_Error.Damaged_Cable…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-027-03, :on 860930,reactor Tripped Following Feedwater Isolation & Turbine Trip Due to Damaged Test Cable.Caused by Personnel Error.Damaged Cable Repaired & Temporary Cable Will Be Installed

LER-1987-001-07, :on 870115,reactor Trip Occurred Due to Reactor Coolant Resistance Temp Detector (RTD) Failure.Caused by Loop C Cold Leg Temp Narrow Range RTD Failing to Low Resistance.Failed RTD Replaced & Recalibr
type: Subject
label: 05000455/LER-1987-001-07, :on 870115,reactor Trip Occurred Due to Reactor Coolant Resistance Temp Detector (RTD) Failure.Caused by Loop C Cold Leg Temp Narrow Range RTD Failing to Low Resistance.Failed RTD Replaced & Recalibr
page: https://kanterella.com/05000455/LER-2D1987-2D001-2D07-2C_-3Aon_870115-2Creactor_Trip_Occurred_Due_to_Reactor_Coolant_Resistance_Temp_Detector_-28RTD-29_Failure.Caused_by_Loop_C_Cold_Leg_Temp_Narrow_Ra…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-001-07, :on 870115,reactor Trip Occurred Due to Reactor Coolant Resistance Temp Detector (RTD) Failure.Caused by Loop C Cold Leg Temp Narrow Range RTD Failing to Low Resistance.Failed RTD Replaced & Recalibr

LER-1987-002-07, :on 870114,main Control Room Outside Air Intake a Process Radiation Monitor Went Into Interlock Mode Due to Failed Automatic Checksource Test on Iodine Channel. Checksource Positioning Mechanism Realigned
type: Subject
label: 05000454/LER-1987-002-07, :on 870114,main Control Room Outside Air Intake a Process Radiation Monitor Went Into Interlock Mode Due to Failed Automatic Checksource Test on Iodine Channel. Checksource Positioning Mechanism Realigned
page: https://kanterella.com/05000454/LER-2D1987-2D002-2D07-2C_-3Aon_870114-2Cmain_Control_Room_Outside_Air_Intake_a_Process_Radiation_Monitor_Went_Into_Interlock_Mode_Due_to_Failed_Automatic_Checksource_Te…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-002-07, :on 870114,main Control Room Outside Air Intake a Process Radiation Monitor Went Into Interlock Mode Due to Failed Automatic Checksource Test on Iodine Channel. Checksource Positioning Mechanism Realigned

LER-1987-003-02, :on 870111,equipment Attendant Recorded Failure of Fire Alarm But Failed to Immediately Notify Shift Engineer That Acceptance Criteria Not Met.Caused by Personnel Error.Personnel Counseled
type: Subject
label: 05000454/LER-1987-003-02, :on 870111,equipment Attendant Recorded Failure of Fire Alarm But Failed to Immediately Notify Shift Engineer That Acceptance Criteria Not Met.Caused by Personnel Error.Personnel Counseled
page: https://kanterella.com/05000454/LER-2D1987-2D003-2D02-2C_-3Aon_870111-2Cequipment_Attendant_Recorded_Failure_of_Fire_Alarm_But_Failed_to_Immediately_Notify_Shift_Engineer_That_Acceptance_Criteria_Not_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-003-02, :on 870111,equipment Attendant Recorded Failure of Fire Alarm But Failed to Immediately Notify Shift Engineer That Acceptance Criteria Not Met.Caused by Personnel Error.Personnel Counseled

05000454/LER-1987-001-06, :on 870111,radioactive Release Tank Not Sampled Prior to Release Per Tech Spec 4.11.1.1.1.Caused by Personnel Error.Radiation Chemistry Technician Counseled & Tanks Relabeled
type: Subject
page: https://kanterella.com/05000454/LER-2D1987-2D001-2D06-2C_-3Aon_870111-2Cradioactive_Release_Tank_Not_Sampled_Prior_to_Release_Per_Tech_Spec_4.11.1.1.1.Caused_by_Personnel_Error.Radiation_Chemistry_Tec…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-001-06, :on 870111,radioactive Release Tank Not Sampled Prior to Release Per Tech Spec 4.11.1.1.1.Caused by Personnel Error.Radiation Chemistry Technician Counseled & Tanks Relabeled

05000454/LER-1986-025-02, :on 860826,Tech Spec 3.12.1 Re Radiological Environ Monitoring Not Met.Caused by Personnel Error.Suppl to 1985 Annual Radiological Environ Operating Rept Will Be Submitted
type: Subject
page: https://kanterella.com/05000454/LER-2D1986-2D025-2D02-2C_-3Aon_860826-2CTech_Spec_3.12.1_Re_Radiological_Environ_Monitoring_Not_Met.Caused_by_Personnel_Error.Suppl_to_1985_Annual_Radiological_Environ_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-025-02, :on 860826,Tech Spec 3.12.1 Re Radiological Environ Monitoring Not Met.Caused by Personnel Error.Suppl to 1985 Annual Radiological Environ Operating Rept Will Be Submitted

LER-1987-005-06, :on 870331,reactor Tripped Due to Spurious Actuation of Turbine Motoring Generator Trip Circuitry.Cause Unknown.Differential Pressure Switch Found Out of Tolerance But Unrelated to Event.Switch Replaced
type: Subject
label: 05000455/LER-1987-005-06, :on 870331,reactor Tripped Due to Spurious Actuation of Turbine Motoring Generator Trip Circuitry.Cause Unknown.Differential Pressure Switch Found Out of Tolerance But Unrelated to Event.Switch Replaced
page: https://kanterella.com/05000455/LER-2D1987-2D005-2D06-2C_-3Aon_870331-2Creactor_Tripped_Due_to_Spurious_Actuation_of_Turbine_Motoring_Generator_Trip_Circuitry.Cause_Unknown.Differential_Pressure_Switc…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-005-06, :on 870331,reactor Tripped Due to Spurious Actuation of Turbine Motoring Generator Trip Circuitry.Cause Unknown.Differential Pressure Switch Found Out of Tolerance But Unrelated to Event.Switch Replaced

05000454/LER-1987-008-04, :on 870324,Train B Automatically Switched to Safeguards Mode During Switching Process.Caused by Safeguard Signal.Cause of Signal Unknown.Procedures Revised
type: Subject
page: https://kanterella.com/05000454/LER-2D1987-2D008-2D04-2C_-3Aon_870324-2CTrain_B_Automatically_Switched_to_Safeguards_Mode_During_Switching_Process.Caused_by_Safeguard_Signal.Cause_of_Signal_Unknown.Pr…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-008-04, :on 870324,Train B Automatically Switched to Safeguards Mode During Switching Process.Caused by Safeguard Signal.Cause of Signal Unknown.Procedures Revised

LER-1986-034-03, :on 861212,radiation Detector to Train B Found Defective.Detector Replaced.On 861215,discovered Leads Restored to Wrong Terminals.Caused by Personnel Error. Personnel Counseled
type: Subject
label: 05000454/LER-1986-034-03, :on 861212,radiation Detector to Train B Found Defective.Detector Replaced.On 861215,discovered Leads Restored to Wrong Terminals.Caused by Personnel Error. Personnel Counseled
page: https://kanterella.com/05000454/LER-2D1986-2D034-2D03-2C_-3Aon_861212-2Cradiation_Detector_to_Train_B_Found_Defective.Detector_Replaced.On_861215-2Cdiscovered_Leads_Restored_to_Wrong_Terminals.Caused_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-034-03, :on 861212,radiation Detector to Train B Found Defective.Detector Replaced.On 861215,discovered Leads Restored to Wrong Terminals.Caused by Personnel Error. Personnel Counseled

LER-1988-022, :on 880919,reactor Trip Occurred Due to Source Range Channel N31 Exceeding Setpoint of 1.0xE5 Counts Per Second.Caused by Loose Connection in Main Control Room Panel 2PM05J.Investigation Conducted
type: Subject
label: 05000457/LER-1988-022, :on 880919,reactor Trip Occurred Due to Source Range Channel N31 Exceeding Setpoint of 1.0xE5 Counts Per Second.Caused by Loose Connection in Main Control Room Panel 2PM05J.Investigation Conducted
page: https://kanterella.com/05000457/LER-2D1988-2D022-2C_-3Aon_880919-2Creactor_Trip_Occurred_Due_to_Source_Range_Channel_N31_Exceeding_Setpoint_of_1.0xE5_Counts_Per_Second.Caused_by_Loose_Connection_in_Ma…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-022, :on 880919,reactor Trip Occurred Due to Source Range Channel N31 Exceeding Setpoint of 1.0xE5 Counts Per Second.Caused by Loose Connection in Main Control Room Panel 2PM05J.Investigation Conducted

05000454/LER-1986-033-03, :on 861209,post-maint Visual Leak Test Not Performed,Violating Tech Spec.Caused by Defective Procedure. Project Const Now Working Under Station Nuclear Work Request Program
type: Subject
page: https://kanterella.com/05000454/LER-2D1986-2D033-2D03-2C_-3Aon_861209-2Cpost-2Dmaint_Visual_Leak_Test_Not_Performed-2CViolating_Tech_Spec.Caused_by_Defective_Procedure._Project_Const_Now_Working_Under…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-033-03, :on 861209,post-maint Visual Leak Test Not Performed,Violating Tech Spec.Caused by Defective Procedure. Project Const Now Working Under Station Nuclear Work Request Program

LER-1988-021, :on 880915,high Level Alarm Occurred on Steam Generator 2C.Caused by Out of Calibr Positioner for Feedwater Regulating Bypass Valve 2FW530A.Water Level Restored & Work Request Issued
type: Subject
label: 05000457/LER-1988-021, :on 880915,high Level Alarm Occurred on Steam Generator 2C.Caused by Out of Calibr Positioner for Feedwater Regulating Bypass Valve 2FW530A.Water Level Restored & Work Request Issued
page: https://kanterella.com/05000457/LER-2D1988-2D021-2C_-3Aon_880915-2Chigh_Level_Alarm_Occurred_on_Steam_Generator_2C.Caused_by_Out_of_Calibr_Positioner_for_Feedwater_Regulating_Bypass_Valve_2FW530A.Wate…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-021, :on 880915,high Level Alarm Occurred on Steam Generator 2C.Caused by Out of Calibr Positioner for Feedwater Regulating Bypass Valve 2FW530A.Water Level Restored & Work Request Issued

LER-1988-019-01, :on 880801,Train a & B Control Room Ventilation Automatically Shifted to Emergency wake-up Mode.Caused by Momentary Fluctuation in Line Voltage That Dropped Below 90 Volts.Equipment Operation Returned to Normal
type: Subject
label: 05000456/LER-1988-019-01, :on 880801,Train a & B Control Room Ventilation Automatically Shifted to Emergency wake-up Mode.Caused by Momentary Fluctuation in Line Voltage That Dropped Below 90 Volts.Equipment Operation Returned to Normal
page: https://kanterella.com/05000456/LER-2D1988-2D019-2D01-2C_-3Aon_880801-2CTrain_a_-26_B_Control_Room_Ventilation_Automatically_Shifted_to_Emergency_wake-2Dup_Mode.Caused_by_Momentary_Fluctuation_in_Line…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-019-01, :on 880801,Train a & B Control Room Ventilation Automatically Shifted to Emergency wake-up Mode.Caused by Momentary Fluctuation in Line Voltage That Dropped Below 90 Volts.Equipment Operation Returned to Normal

LER-1988-015-03, :on 880710,control Room Recirculation Charcoal Absorber Dampers Repositioned,Placing Charcoal Absorbers in Svc & Annunciating Control Room Recirculation Alarm.Cause Undetermined.Protective Device to Be Installed
type: Subject
label: 05000456/LER-1988-015-03, :on 880710,control Room Recirculation Charcoal Absorber Dampers Repositioned,Placing Charcoal Absorbers in Svc & Annunciating Control Room Recirculation Alarm.Cause Undetermined.Protective Device to Be Installed
page: https://kanterella.com/05000456/LER-2D1988-2D015-2D03-2C_-3Aon_880710-2Ccontrol_Room_Recirculation_Charcoal_Absorber_Dampers_Repositioned-2CPlacing_Charcoal_Absorbers_in_Svc_-26_Annunciating_Control_R…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-015-03, :on 880710,control Room Recirculation Charcoal Absorber Dampers Repositioned,Placing Charcoal Absorbers in Svc & Annunciating Control Room Recirculation Alarm.Cause Undetermined.Protective Device to Be Installed

LER-1988-016-03, :on 880624,facility Reactor Trip Occurred on 2B Steam Generator low-low Level Due to Failue of Heater Drain Tank Makeup Valve.Valve Repaired & No Significant Abnormalities Found
type: Subject
label: 05000457/LER-1988-016-03, :on 880624,facility Reactor Trip Occurred on 2B Steam Generator low-low Level Due to Failue of Heater Drain Tank Makeup Valve.Valve Repaired & No Significant Abnormalities Found
page: https://kanterella.com/05000457/LER-2D1988-2D016-2D03-2C_-3Aon_880624-2Cfacility_Reactor_Trip_Occurred_on_2B_Steam_Generator_low-2Dlow_Level_Due_to_Failue_of_Heater_Drain_Tank_Makeup_Valve.Valve_Repai…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-016-03, :on 880624,facility Reactor Trip Occurred on 2B Steam Generator low-low Level Due to Failue of Heater Drain Tank Makeup Valve.Valve Repaired & No Significant Abnormalities Found

LER-1986-021-03, :on 860614,performance of RCS Water Inventory Balance Exceeded Tech Spec Action Statement by 1 H & 27 Minutes.Caused by Personnel Misinterpretation of Requirement.Personnel Counseled
type: Subject
label: 05000454/LER-1986-021-03, :on 860614,performance of RCS Water Inventory Balance Exceeded Tech Spec Action Statement by 1 H & 27 Minutes.Caused by Personnel Misinterpretation of Requirement.Personnel Counseled
page: https://kanterella.com/05000454/LER-2D1986-2D021-2D03-2C_-3Aon_860614-2Cperformance_of_RCS_Water_Inventory_Balance_Exceeded_Tech_Spec_Action_Statement_by_1_H_-26_27_Minutes.Caused_by_Personnel_Misinte…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-021-03, :on 860614,performance of RCS Water Inventory Balance Exceeded Tech Spec Action Statement by 1 H & 27 Minutes.Caused by Personnel Misinterpretation of Requirement.Personnel Counseled

LER-1987-007-04, :on 870316,hourly Firewatch Started Late Thereby Exceeding Requirements of Tech Spec.Caused When Radiation Protection Personnel Issued Neutron Dosimetry to Technician 20 Minutes Late.Personnel Counseled
type: Subject
label: 05000454/LER-1987-007-04, :on 870316,hourly Firewatch Started Late Thereby Exceeding Requirements of Tech Spec.Caused When Radiation Protection Personnel Issued Neutron Dosimetry to Technician 20 Minutes Late.Personnel Counseled
page: https://kanterella.com/05000454/LER-2D1987-2D007-2D04-2C_-3Aon_870316-2Chourly_Firewatch_Started_Late_Thereby_Exceeding_Requirements_of_Tech_Spec.Caused_When_Radiation_Protection_Personnel_Issued_Neut…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-007-04, :on 870316,hourly Firewatch Started Late Thereby Exceeding Requirements of Tech Spec.Caused When Radiation Protection Personnel Issued Neutron Dosimetry to Technician 20 Minutes Late.Personnel Counseled

LER-1986-016-03, :on 860527,following Installation of Backup Electrical Power Supply,Continuous Fire Watch Inadvertently Released from Post.Caused by Personnel Error.Engineer Instructed on Fire Watch Procedures
type: Subject
label: 05000454/LER-1986-016-03, :on 860527,following Installation of Backup Electrical Power Supply,Continuous Fire Watch Inadvertently Released from Post.Caused by Personnel Error.Engineer Instructed on Fire Watch Procedures
page: https://kanterella.com/05000454/LER-2D1986-2D016-2D03-2C_-3Aon_860527-2Cfollowing_Installation_of_Backup_Electrical_Power_Supply-2CContinuous_Fire_Watch_Inadvertently_Released_from_Post.Caused_by_Pers…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-016-03, :on 860527,following Installation of Backup Electrical Power Supply,Continuous Fire Watch Inadvertently Released from Post.Caused by Personnel Error.Engineer Instructed on Fire Watch Procedures

05000454/LER-1986-018-03, :on 860602,main Control Room Outside Air Intake Process Radiation Monitor a Went Into Interlock Mode. Caused by Misaligned Check Source Mechanism.Mechanism Realigned
type: Subject
page: https://kanterella.com/05000454/LER-2D1986-2D018-2D03-2C_-3Aon_860602-2Cmain_Control_Room_Outside_Air_Intake_Process_Radiation_Monitor_a_Went_Into_Interlock_Mode._Caused_by_Misaligned_Check_Source_Mec…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-018-03, :on 860602,main Control Room Outside Air Intake Process Radiation Monitor a Went Into Interlock Mode. Caused by Misaligned Check Source Mechanism.Mechanism Realigned

LER-1987-006-03, :on 870311,monthly Fire Protection Valve Lineup Surveillance Incorrectly Scheduled.Caused by Failure to Consider All Tech Spec Scheduling Requirements.Use of Existing Computer Program Mandated
type: Subject
label: 05000454/LER-1987-006-03, :on 870311,monthly Fire Protection Valve Lineup Surveillance Incorrectly Scheduled.Caused by Failure to Consider All Tech Spec Scheduling Requirements.Use of Existing Computer Program Mandated
page: https://kanterella.com/05000454/LER-2D1987-2D006-2D03-2C_-3Aon_870311-2Cmonthly_Fire_Protection_Valve_Lineup_Surveillance_Incorrectly_Scheduled.Caused_by_Failure_to_Consider_All_Tech_Spec_Scheduling_R…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-006-03, :on 870311,monthly Fire Protection Valve Lineup Surveillance Incorrectly Scheduled.Caused by Failure to Consider All Tech Spec Scheduling Requirements.Use of Existing Computer Program Mandated

LER-1988-029, :on 881025,manual Reactor Trip & RCS Inventory Balance in Excess of Required Time Interval Occurred.Caused by Condensate Pump Suction Strainers Plugging.Main Condenser Thoroughly Inspected & Cleaned
type: Subject
label: 05000457/LER-1988-029, :on 881025,manual Reactor Trip & RCS Inventory Balance in Excess of Required Time Interval Occurred.Caused by Condensate Pump Suction Strainers Plugging.Main Condenser Thoroughly Inspected & Cleaned
page: https://kanterella.com/05000457/LER-2D1988-2D029-2C_-3Aon_881025-2Cmanual_Reactor_Trip_-26_RCS_Inventory_Balance_in_Excess_of_Required_Time_Interval_Occurred.Caused_by_Condensate_Pump_Suction_Strainer…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-029, :on 881025,manual Reactor Trip & RCS Inventory Balance in Excess of Required Time Interval Occurred.Caused by Condensate Pump Suction Strainers Plugging.Main Condenser Thoroughly Inspected & Cleaned

Generator Trip.Caused by Potential Transformer Failure on Offsite 138 Kv Line.Subj Potential Transformer Replaced & Line Restored
type: Subject
label: 05000456/LER-1988-022-02, :on 881016,reactor Tripped on Reactor Coolant Pump Low Flow Followed by Turbine/Generator Trip.Caused by Potential Transformer Failure on Offsite 138 Kv Line.Subj Potential Transformer Replaced & Line Restored
page: https://kanterella.com/05000456/LER-2D1988-2D022-2D02-2C_-3Aon_881016-2Creactor_Tripped_on_Reactor_Coolant_Pump_Low_Flow_Followed_by_Turbine/Generator_Trip.Caused_by_Potential_Transformer_Failure_on_O…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-022-02, :on 881016,reactor Tripped on Reactor Coolant Pump Low Flow Followed by Turbine/Generator Trip.Caused by Potential Transformer Failure on Offsite 138 Kv Line.Subj Potential Transformer Replaced & Line Restored

LER-1987-005-04, :on 870310,contractor Personnel Inadvertently Damaged Fire Protection Sprinkler Head.Sus Isolated & Declared Inoperable.Caused by Procedural Deficiency. Formalized Training Provided
type: Subject
label: 05000454/LER-1987-005-04, :on 870310,contractor Personnel Inadvertently Damaged Fire Protection Sprinkler Head.Sus Isolated & Declared Inoperable.Caused by Procedural Deficiency. Formalized Training Provided
page: https://kanterella.com/05000454/LER-2D1987-2D005-2D04-2C_-3Aon_870310-2Ccontractor_Personnel_Inadvertently_Damaged_Fire_Protection_Sprinkler_Head.Sus_Isolated_-26_Declared_Inoperable.Caused_by_Procedu…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-005-04, :on 870310,contractor Personnel Inadvertently Damaged Fire Protection Sprinkler Head.Sus Isolated & Declared Inoperable.Caused by Procedural Deficiency. Formalized Training Provided

LER-1988-026, :on 880923,when Second Phase of Data Collection Attached,Turbine & Reactor Trip Occurred.Caused by New Type of Configuration & Lack of Proper Communications Between Personnel.Test Equipment Removed
type: Subject
label: 05000457/LER-1988-026, :on 880923,when Second Phase of Data Collection Attached,Turbine & Reactor Trip Occurred.Caused by New Type of Configuration & Lack of Proper Communications Between Personnel.Test Equipment Removed
page: https://kanterella.com/05000457/LER-2D1988-2D026-2C_-3Aon_880923-2Cwhen_Second_Phase_of_Data_Collection_Attached-2CTurbine_-26_Reactor_Trip_Occurred.Caused_by_New_Type_of_Configuration_-26_Lack_of_Pro…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-026, :on 880923,when Second Phase of Data Collection Attached,Turbine & Reactor Trip Occurred.Caused by New Type of Configuration & Lack of Proper Communications Between Personnel.Test Equipment Removed

LER-1987-004-06, :on 870221,shift Control Room Engineer Missed Tech Spec Action Requirement on Containment Isolation Valves.Valve Discovered Inoperable for 62 H.Caused by Personnel Error.Personnel Involved Counseled
type: Subject
label: 05000455/LER-1987-004-06, :on 870221,shift Control Room Engineer Missed Tech Spec Action Requirement on Containment Isolation Valves.Valve Discovered Inoperable for 62 H.Caused by Personnel Error.Personnel Involved Counseled
page: https://kanterella.com/05000455/LER-2D1987-2D004-2D06-2C_-3Aon_870221-2Cshift_Control_Room_Engineer_Missed_Tech_Spec_Action_Requirement_on_Containment_Isolation_Valves.Valve_Discovered_Inoperable_for_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-004-06, :on 870221,shift Control Room Engineer Missed Tech Spec Action Requirement on Containment Isolation Valves.Valve Discovered Inoperable for 62 H.Caused by Personnel Error.Personnel Involved Counseled

LER-1988-025-01, :on 880926,monthly Target Axial Flux Difference Surveillance Not Performed,Resulting in Exceedance of Tech Spec Limit.Caused by Cognitive Personnel Error.New Target Values for Delta I Calculated
type: Subject
label: 05000457/LER-1988-025-01, :on 880926,monthly Target Axial Flux Difference Surveillance Not Performed,Resulting in Exceedance of Tech Spec Limit.Caused by Cognitive Personnel Error.New Target Values for Delta I Calculated
page: https://kanterella.com/05000457/LER-2D1988-2D025-2D01-2C_-3Aon_880926-2Cmonthly_Target_Axial_Flux_Difference_Surveillance_Not_Performed-2CResulting_in_Exceedance_of_Tech_Spec_Limit.Caused_by_Cognitive…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-025-01, :on 880926,monthly Target Axial Flux Difference Surveillance Not Performed,Resulting in Exceedance of Tech Spec Limit.Caused by Cognitive Personnel Error.New Target Values for Delta I Calculated

LER-1987-004-05, :on 870225,safety Injection Occurred During Maint Troubleshooting.Caused by Personnel Error.Disciplinary Action Taken Against Personnel Involved & Other Instrument Maint Personnel Counseled
type: Subject
label: 05000454/LER-1987-004-05, :on 870225,safety Injection Occurred During Maint Troubleshooting.Caused by Personnel Error.Disciplinary Action Taken Against Personnel Involved & Other Instrument Maint Personnel Counseled
page: https://kanterella.com/05000454/LER-2D1987-2D004-2D05-2C_-3Aon_870225-2Csafety_Injection_Occurred_During_Maint_Troubleshooting.Caused_by_Personnel_Error.Disciplinary_Action_Taken_Against_Personnel_Inv…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1987-004-05, :on 870225,safety Injection Occurred During Maint Troubleshooting.Caused by Personnel Error.Disciplinary Action Taken Against Personnel Involved & Other Instrument Maint Personnel Counseled

LER-1988-023-01, :on 880919,Trains 2A & 2B Declared Inoperable. Caused by Inadequate Venting Due to Surveillance Data Sheets Not Providing Complete Guidance & Inadequate Review of Surveillance.Procedures Changed
type: Subject
label: 05000457/LER-1988-023-01, :on 880919,Trains 2A & 2B Declared Inoperable. Caused by Inadequate Venting Due to Surveillance Data Sheets Not Providing Complete Guidance & Inadequate Review of Surveillance.Procedures Changed
page: https://kanterella.com/05000457/LER-2D1988-2D023-2D01-2C_-3Aon_880919-2CTrains_2A_-26_2B_Declared_Inoperable._Caused_by_Inadequate_Venting_Due_to_Surveillance_Data_Sheets_Not_Providing_Complete_Guidan…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-023-01, :on 880919,Trains 2A & 2B Declared Inoperable. Caused by Inadequate Venting Due to Surveillance Data Sheets Not Providing Complete Guidance & Inadequate Review of Surveillance.Procedures Changed

LER-1987-003-05, :on 870217,both Trains of Essential Svc Water Makeup & Two Out of Three Trains of Nonaccessible Auxiliary Bldg Exhaust Ventilation Inoperable in Excess of Tech Specs Time Limits Due to Personnel Error
type: Subject
label: 05000455/LER-1987-003-05, :on 870217,both Trains of Essential Svc Water Makeup & Two Out of Three Trains of Nonaccessible Auxiliary Bldg Exhaust Ventilation Inoperable in Excess of Tech Specs Time Limits Due to Personnel Error
page: https://kanterella.com/05000455/LER-2D1987-2D003-2D05-2C_-3Aon_870217-2Cboth_Trains_of_Essential_Svc_Water_Makeup_-26_Two_Out_of_Three_Trains_of_Nonaccessible_Auxiliary_Bldg_Exhaust_Ventilation_Inoper…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000455/LER-1987-003-05, :on 870217,both Trains of Essential Svc Water Makeup & Two Out of Three Trains of Nonaccessible Auxiliary Bldg Exhaust Ventilation Inoperable in Excess of Tech Specs Time Limits Due to Personnel Error

LER-1986-023-03, :on 860718,discovered Installation of Defective Pressurizer Safety Valve as Result of Excessive Seat Leakage on 860717.Caused by Series of Personnel Errors.Secure Storage Cages Constructed
type: Subject
label: 05000454/LER-1986-023-03, :on 860718,discovered Installation of Defective Pressurizer Safety Valve as Result of Excessive Seat Leakage on 860717.Caused by Series of Personnel Errors.Secure Storage Cages Constructed
page: https://kanterella.com/05000454/LER-2D1986-2D023-2D03-2C_-3Aon_860718-2Cdiscovered_Installation_of_Defective_Pressurizer_Safety_Valve_as_Result_of_Excessive_Seat_Leakage_on_860717.Caused_by_Series_of_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-023-03, :on 860718,discovered Installation of Defective Pressurizer Safety Valve as Result of Excessive Seat Leakage on 860717.Caused by Series of Personnel Errors.Secure Storage Cages Constructed

05000454/LER-1986-020-02, :on 860702,RCS Leakage Exceeded Tech Specs. Caused by Failed Packing Diaphragms on Isolation Valve. Entire Valve Cut Out & Replaced
type: Subject
page: https://kanterella.com/05000454/LER-2D1986-2D020-2D02-2C_-3Aon_860702-2CRCS_Leakage_Exceeded_Tech_Specs._Caused_by_Failed_Packing_Diaphragms_on_Isolation_Valve._Entire_Valve_Cut_Out_-26_Replaced
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-020-02, :on 860702,RCS Leakage Exceeded Tech Specs. Caused by Failed Packing Diaphragms on Isolation Valve. Entire Valve Cut Out & Replaced

LER-1986-012-02, :on 860327,4 H Surveillance of Digital Rod Position Indication Vs Bank Demand Position Indication Mistakenly Stopped.Caused by Personnel Error.More Specific Instructions on Daily Orders Instituted
type: Subject
label: 05000454/LER-1986-012-02, :on 860327,4 H Surveillance of Digital Rod Position Indication Vs Bank Demand Position Indication Mistakenly Stopped.Caused by Personnel Error.More Specific Instructions on Daily Orders Instituted
page: https://kanterella.com/05000454/LER-2D1986-2D012-2D02-2C_-3Aon_860327-2C4_H_Surveillance_of_Digital_Rod_Position_Indication_Vs_Bank_Demand_Position_Indication_Mistakenly_Stopped.Caused_by_Personnel_Er…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-012-02, :on 860327,4 H Surveillance of Digital Rod Position Indication Vs Bank Demand Position Indication Mistakenly Stopped.Caused by Personnel Error.More Specific Instructions on Daily Orders Instituted

LER-1986-019-03, :on 860630,discovered That power-range Nuclear Instrumentation Channel Not Fully Tripped within 6 H of Declaring Channel Inoperable.Caused by Personnel Error. Procedures Revised
type: Subject
label: 05000454/LER-1986-019-03, :on 860630,discovered That power-range Nuclear Instrumentation Channel Not Fully Tripped within 6 H of Declaring Channel Inoperable.Caused by Personnel Error. Procedures Revised
page: https://kanterella.com/05000454/LER-2D1986-2D019-2D03-2C_-3Aon_860630-2Cdiscovered_That_power-2Drange_Nuclear_Instrumentation_Channel_Not_Fully_Tripped_within_6_H_of_Declaring_Channel_Inoperable.Cause…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-019-03, :on 860630,discovered That power-range Nuclear Instrumentation Channel Not Fully Tripped within 6 H of Declaring Channel Inoperable.Caused by Personnel Error. Procedures Revised

plant in Mode 1,process Radiation Monitor OPR31J (Main Control Room Outside Air Intake a) Went Into Interlock Mode Due to Spike on Monitor Iodine Channel.Caused by Bad Component
type: Subject
label: 05000454/LER-1986-002, :on 860126 & 0204,w/plant in Mode 1,process Radiation Monitor OPR31J (Main Control Room Outside Air Intake a) Went Into Interlock Mode Due to Spike on Monitor Iodine Channel.Caused by Bad Component
page: https://kanterella.com/05000454/LER-2D1986-2D002-2C_-3Aon_860126_-26_0204-2Cw/plant_in_Mode_1-2Cprocess_Radiation_Monitor_OPR31J_-28Main_Control_Room_Outside_Air_Intake_a-29_Went_Into_Interlock_Mode_D…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-002, :on 860126 & 0204,w/plant in Mode 1,process Radiation Monitor OPR31J (Main Control Room Outside Air Intake a) Went Into Interlock Mode Due to Spike on Monitor Iodine Channel.Caused by Bad Component

plant in Mode 1,main Control Room Outside Air Intake B Process Radiation Monitor OPR34J Went Into Interlock Mode Due to Loss of Sample Flow.Caused by Sample Pump Shutdown Due to Bumping Switch
type: Subject
label: 05000454/LER-1986-010-03, :on 860318,w/plant in Mode 1,main Control Room Outside Air Intake B Process Radiation Monitor OPR34J Went Into Interlock Mode Due to Loss of Sample Flow.Caused by Sample Pump Shutdown Due to Bumping Switch
page: https://kanterella.com/05000454/LER-2D1986-2D010-2D03-2C_-3Aon_860318-2Cw/plant_in_Mode_1-2Cmain_Control_Room_Outside_Air_Intake_B_Process_Radiation_Monitor_OPR34J_Went_Into_Interlock_Mode_Due_to_Loss…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-010-03, :on 860318,w/plant in Mode 1,main Control Room Outside Air Intake B Process Radiation Monitor OPR34J Went Into Interlock Mode Due to Loss of Sample Flow.Caused by Sample Pump Shutdown Due to Bumping Switch

LER-1986-017-03, :on 860602,both Trains of Main Control Room Ventilation Sys Inoperable.Caused by Setpoint Drift on Train a Makeup Fan & Bent Spring Release on Train B Supply Fan Breaker.Setpoint Recalibr & Spring Repaired
type: Subject
label: 05000454/LER-1986-017-03, :on 860602,both Trains of Main Control Room Ventilation Sys Inoperable.Caused by Setpoint Drift on Train a Makeup Fan & Bent Spring Release on Train B Supply Fan Breaker.Setpoint Recalibr & Spring Repaired
page: https://kanterella.com/05000454/LER-2D1986-2D017-2D03-2C_-3Aon_860602-2Cboth_Trains_of_Main_Control_Room_Ventilation_Sys_Inoperable.Caused_by_Setpoint_Drift_on_Train_a_Makeup_Fan_-26_Bent_Spring_Relea…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-017-03, :on 860602,both Trains of Main Control Room Ventilation Sys Inoperable.Caused by Setpoint Drift on Train a Makeup Fan & Bent Spring Release on Train B Supply Fan Breaker.Setpoint Recalibr & Spring Repaired

O Proper Signal.Caused by Failure of Westinghouse AR-3 Relay in Fan Breaker Closing Circuitry.Leads Moved
type: Subject
label: 05000454/LER-1986-004-01, :on 860131 & 0205,outside Diameter Auxiliary Bldg Charcoal Booster Fan Automatically Started W/O Proper Signal.Caused by Failure of Westinghouse AR-3 Relay in Fan Breaker Closing Circuitry.Leads Moved
page: https://kanterella.com/05000454/LER-2D1986-2D004-2D01-2C_-3Aon_860131_-26_0205-2Coutside_Diameter_Auxiliary_Bldg_Charcoal_Booster_Fan_Automatically_Started_W/O_Proper_Signal.Caused_by_Failure_of_Westi…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-004-01, :on 860131 & 0205,outside Diameter Auxiliary Bldg Charcoal Booster Fan Automatically Started W/O Proper Signal.Caused by Failure of Westinghouse AR-3 Relay in Fan Breaker Closing Circuitry.Leads Moved

LER-1986-015-03, :on 860507,discovered Test Voltage for Verifying Neutron Flux Multiplication for Boron Dilution Protection Sys Incorrect.Caused by Inadequate Procedures. Interim Procedure SPP-86-71 Written
type: Subject
label: 05000454/LER-1986-015-03, :on 860507,discovered Test Voltage for Verifying Neutron Flux Multiplication for Boron Dilution Protection Sys Incorrect.Caused by Inadequate Procedures. Interim Procedure SPP-86-71 Written
page: https://kanterella.com/05000454/LER-2D1986-2D015-2D03-2C_-3Aon_860507-2Cdiscovered_Test_Voltage_for_Verifying_Neutron_Flux_Multiplication_for_Boron_Dilution_Protection_Sys_Incorrect.Caused_by_Inadequa…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-015-03, :on 860507,discovered Test Voltage for Verifying Neutron Flux Multiplication for Boron Dilution Protection Sys Incorrect.Caused by Inadequate Procedures. Interim Procedure SPP-86-71 Written

05000454/LER-1986-014-03, :on 860512,main Control Room Outside Air Intake Process Radiation Monitor a Went Into Interlock Mode.Caused by Clogged Particulate Sample Filter.Filter Interval Changed
type: Subject
page: https://kanterella.com/05000454/LER-2D1986-2D014-2D03-2C_-3Aon_860512-2Cmain_Control_Room_Outside_Air_Intake_Process_Radiation_Monitor_a_Went_Into_Interlock_Mode.Caused_by_Clogged_Particulate_Sample_F…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-014-03, :on 860512,main Control Room Outside Air Intake Process Radiation Monitor a Went Into Interlock Mode.Caused by Clogged Particulate Sample Filter.Filter Interval Changed

LER-1985-091, :on 851009,auxiliary Bldg Charcoal Booster Fan Automatically Started.Output Contact from Energized Unit 2 ESF Relay Not Properly Isolated from Unit 1 Associated Equipment.Caused by Installation Error
type: Subject
label: 05000454/LER-1985-091, :on 851009,auxiliary Bldg Charcoal Booster Fan Automatically Started.Output Contact from Energized Unit 2 ESF Relay Not Properly Isolated from Unit 1 Associated Equipment.Caused by Installation Error
page: https://kanterella.com/05000454/LER-2D1985-2D091-2C_-3Aon_851009-2Cauxiliary_Bldg_Charcoal_Booster_Fan_Automatically_Started.Output_Contact_from_Energized_Unit_2_ESF_Relay_Not_Properly_Isolated_from_U…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-091, :on 851009,auxiliary Bldg Charcoal Booster Fan Automatically Started.Output Contact from Energized Unit 2 ESF Relay Not Properly Isolated from Unit 1 Associated Equipment.Caused by Installation Error

LER-1988-009-05, :on 880530,manual Reactor Trip Due to Inoperable Rod Control Sys.Caused by Failure of Miscellaneous Electric Room (Mer) Ventilation Fan.Temporary Cooling Fans Installed in Mer
type: Subject
label: 05000457/LER-1988-009-05, :on 880530,manual Reactor Trip Due to Inoperable Rod Control Sys.Caused by Failure of Miscellaneous Electric Room (Mer) Ventilation Fan.Temporary Cooling Fans Installed in Mer
page: https://kanterella.com/05000457/LER-2D1988-2D009-2D05-2C_-3Aon_880530-2Cmanual_Reactor_Trip_Due_to_Inoperable_Rod_Control_Sys.Caused_by_Failure_of_Miscellaneous_Electric_Room_-28Mer-29_Ventilation_Fan…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-009-05, :on 880530,manual Reactor Trip Due to Inoperable Rod Control Sys.Caused by Failure of Miscellaneous Electric Room (Mer) Ventilation Fan.Temporary Cooling Fans Installed in Mer

LER-1988-030, :on 881030,steam Generator Water Level Reached hi-hi Level Due to Overfeeding.Caused by Nuclear Station Operator Lack of Experience.Steam Generator Water Levels Restored to Normal Band
type: Subject
label: 05000457/LER-1988-030, :on 881030,steam Generator Water Level Reached hi-hi Level Due to Overfeeding.Caused by Nuclear Station Operator Lack of Experience.Steam Generator Water Levels Restored to Normal Band
page: https://kanterella.com/05000457/LER-2D1988-2D030-2C_-3Aon_881030-2Csteam_Generator_Water_Level_Reached_hi-2Dhi_Level_Due_to_Overfeeding.Caused_by_Nuclear_Station_Operator_Lack_of_Experience.Steam_Gene…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-030, :on 881030,steam Generator Water Level Reached hi-hi Level Due to Overfeeding.Caused by Nuclear Station Operator Lack of Experience.Steam Generator Water Levels Restored to Normal Band

LER-1988-024-04, :on 881031,operator Noted That Hydraulic Pump on 1A MSIV Pumping Continuously.Caused by Failure of M1 Four Way Valve.Nuclear Work Request A26531 Written to Replace Defective Four Way Hydraulic Valve M1
type: Subject
label: 05000456/LER-1988-024-04, :on 881031,operator Noted That Hydraulic Pump on 1A MSIV Pumping Continuously.Caused by Failure of M1 Four Way Valve.Nuclear Work Request A26531 Written to Replace Defective Four Way Hydraulic Valve M1
page: https://kanterella.com/05000456/LER-2D1988-2D024-2D04-2C_-3Aon_881031-2Coperator_Noted_That_Hydraulic_Pump_on_1A_MSIV_Pumping_Continuously.Caused_by_Failure_of_M1_Four_Way_Valve.Nuclear_Work_Request_A…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-024-04, :on 881031,operator Noted That Hydraulic Pump on 1A MSIV Pumping Continuously.Caused by Failure of M1 Four Way Valve.Nuclear Work Request A26531 Written to Replace Defective Four Way Hydraulic Valve M1

LER-1988-031, :on 881105,reactor Trip Due to Negative Rate Trip on All Instrumentation Sys Power Range Channels Occurred.Caused by Incorrect Relay 1H Setting Due to Conflicting Info in Technical Manual
type: Subject
label: 05000457/LER-1988-031, :on 881105,reactor Trip Due to Negative Rate Trip on All Instrumentation Sys Power Range Channels Occurred.Caused by Incorrect Relay 1H Setting Due to Conflicting Info in Technical Manual
page: https://kanterella.com/05000457/LER-2D1988-2D031-2C_-3Aon_881105-2Creactor_Trip_Due_to_Negative_Rate_Trip_on_All_Instrumentation_Sys_Power_Range_Channels_Occurred.Caused_by_Incorrect_Relay_1H_Setting_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-031, :on 881105,reactor Trip Due to Negative Rate Trip on All Instrumentation Sys Power Range Channels Occurred.Caused by Incorrect Relay 1H Setting Due to Conflicting Info in Technical Manual

LER-1986-013-03, :on 860423,containment Air Lock Leakage Rate Surveillance Performed Late Due to Misapplication of Tech Spec 4.0.2.Caused by Personnel Error.Computer Program Revised to Require Testing Every 6 Months
type: Subject
label: 05000454/LER-1986-013-03, :on 860423,containment Air Lock Leakage Rate Surveillance Performed Late Due to Misapplication of Tech Spec 4.0.2.Caused by Personnel Error.Computer Program Revised to Require Testing Every 6 Months
page: https://kanterella.com/05000454/LER-2D1986-2D013-2D03-2C_-3Aon_860423-2Ccontainment_Air_Lock_Leakage_Rate_Surveillance_Performed_Late_Due_to_Misapplication_of_Tech_Spec_4.0.2.Caused_by_Personnel_Error…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-013-03, :on 860423,containment Air Lock Leakage Rate Surveillance Performed Late Due to Misapplication of Tech Spec 4.0.2.Caused by Personnel Error.Computer Program Revised to Require Testing Every 6 Months

LER-1988-024-02, :on 880921,steam Generator hi-hi Level Due to Incorrect Operation of High Pressure Cleanup Loop Occurred. Caused by Design Deficiency in man-machine Interface. Engineering Evaluation Will Be Performed
type: Subject
label: 05000457/LER-1988-024-02, :on 880921,steam Generator hi-hi Level Due to Incorrect Operation of High Pressure Cleanup Loop Occurred. Caused by Design Deficiency in man-machine Interface. Engineering Evaluation Will Be Performed
page: https://kanterella.com/05000457/LER-2D1988-2D024-2D02-2C_-3Aon_880921-2Csteam_Generator_hi-2Dhi_Level_Due_to_Incorrect_Operation_of_High_Pressure_Cleanup_Loop_Occurred._Caused_by_Design_Deficiency_in_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-024-02, :on 880921,steam Generator hi-hi Level Due to Incorrect Operation of High Pressure Cleanup Loop Occurred. Caused by Design Deficiency in man-machine Interface. Engineering Evaluation Will Be Performed

LER-1988-008, :on 880220,inadequate Capacitor Connection Resulted in Degraded Instrument Bus Voltage & Reactor Trip. Caused by Preservice Installation Error of Capacitor by Vendor.Capacitor & Connecting Leads Replaced
type: Subject
label: 05000457/LER-1988-008, :on 880220,inadequate Capacitor Connection Resulted in Degraded Instrument Bus Voltage & Reactor Trip. Caused by Preservice Installation Error of Capacitor by Vendor.Capacitor & Connecting Leads Replaced
page: https://kanterella.com/05000457/LER-2D1988-2D008-2C_-3Aon_880220-2Cinadequate_Capacitor_Connection_Resulted_in_Degraded_Instrument_Bus_Voltage_-26_Reactor_Trip._Caused_by_Preservice_Installation_Error…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-008, :on 880220,inadequate Capacitor Connection Resulted in Degraded Instrument Bus Voltage & Reactor Trip. Caused by Preservice Installation Error of Capacitor by Vendor.Capacitor & Connecting Leads Replaced

05000456/LER-1988-020-02, :on 880916,control Room Train B Ventilation Automatically Switched to Makeup Mode Due to High Radiation Signal.Cause Unknown.Pressure Transducer Replaced
type: Subject
page: https://kanterella.com/05000456/LER-2D1988-2D020-2D02-2C_-3Aon_880916-2Ccontrol_Room_Train_B_Ventilation_Automatically_Switched_to_Makeup_Mode_Due_to_High_Radiation_Signal.Cause_Unknown.Pressure_Trans…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-020-02, :on 880916,control Room Train B Ventilation Automatically Switched to Makeup Mode Due to High Radiation Signal.Cause Unknown.Pressure Transducer Replaced

LER-1988-003-02, :on 880113,fuel Handling Bldg Incident Monitor ORT-AR056 Went Into Alarm Condition Due to Loss of Pulses. Cause Not Known.Detector Cable Slackness Not Considered to Have Caused Loss of Pulses.Monitor Replaced
type: Subject
label: 05000456/LER-1988-003-02, :on 880113,fuel Handling Bldg Incident Monitor ORT-AR056 Went Into Alarm Condition Due to Loss of Pulses. Cause Not Known.Detector Cable Slackness Not Considered to Have Caused Loss of Pulses.Monitor Replaced
page: https://kanterella.com/05000456/LER-2D1988-2D003-2D02-2C_-3Aon_880113-2Cfuel_Handling_Bldg_Incident_Monitor_ORT-2DAR056_Went_Into_Alarm_Condition_Due_to_Loss_of_Pulses._Cause_Not_Known.Detector_Cable_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-003-02, :on 880113,fuel Handling Bldg Incident Monitor ORT-AR056 Went Into Alarm Condition Due to Loss of Pulses. Cause Not Known.Detector Cable Slackness Not Considered to Have Caused Loss of Pulses.Monitor Replaced

LER-1988-020-01, :on 880904,manual Reactor Trip Occurred Due to lo-lo Steam Generator Levels.Caused by Failure of Emergency Drain Valve.Steam Generator Levels Recovered & Stable Conditions Established
type: Subject
label: 05000457/LER-1988-020-01, :on 880904,manual Reactor Trip Occurred Due to lo-lo Steam Generator Levels.Caused by Failure of Emergency Drain Valve.Steam Generator Levels Recovered & Stable Conditions Established
page: https://kanterella.com/05000457/LER-2D1988-2D020-2D01-2C_-3Aon_880904-2Cmanual_Reactor_Trip_Occurred_Due_to_lo-2Dlo_Steam_Generator_Levels.Caused_by_Failure_of_Emergency_Drain_Valve.Steam_Generator_Le…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-020-01, :on 880904,manual Reactor Trip Occurred Due to lo-lo Steam Generator Levels.Caused by Failure of Emergency Drain Valve.Steam Generator Levels Recovered & Stable Conditions Established

LER-1988-011, :on 880415,0503 & 0506,high Radiation Signals Processed by Control Room Train B Radiation Monitor Caused Control Room Ventilation Sys to Shift to Emergency Makeup Mode.Caused by Noisy Switch.Monitor Reset
type: Subject
label: 05000456/LER-1988-011, :on 880415,0503 & 0506,high Radiation Signals Processed by Control Room Train B Radiation Monitor Caused Control Room Ventilation Sys to Shift to Emergency Makeup Mode.Caused by Noisy Switch.Monitor Reset
page: https://kanterella.com/05000456/LER-2D1988-2D011-2C_-3Aon_880415-2C0503_-26_0506-2Chigh_Radiation_Signals_Processed_by_Control_Room_Train_B_Radiation_Monitor_Caused_Control_Room_Ventilation_Sys_to_Shi…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-011, :on 880415,0503 & 0506,high Radiation Signals Processed by Control Room Train B Radiation Monitor Caused Control Room Ventilation Sys to Shift to Emergency Makeup Mode.Caused by Noisy Switch.Monitor Reset

LER-1988-011-01, :on 880415,0503 & 06,control Room Ventilation Sys (VC) Shifted to Emergency Makeup Mode Due to Spurious Monitor Spike.Cause Not Determined.Monitor Reset & VC Returned to Normal.Electrocubes Installed
type: Subject
label: 05000456/LER-1988-011-01, :on 880415,0503 & 06,control Room Ventilation Sys (VC) Shifted to Emergency Makeup Mode Due to Spurious Monitor Spike.Cause Not Determined.Monitor Reset & VC Returned to Normal.Electrocubes Installed
page: https://kanterella.com/05000456/LER-2D1988-2D011-2D01-2C_-3Aon_880415-2C0503_-26_06-2Ccontrol_Room_Ventilation_Sys_-28VC-29_Shifted_to_Emergency_Makeup_Mode_Due_to_Spurious_Monitor_Spike.Cause_Not_Det…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-011-01, :on 880415,0503 & 06,control Room Ventilation Sys (VC) Shifted to Emergency Makeup Mode Due to Spurious Monitor Spike.Cause Not Determined.Monitor Reset & VC Returned to Normal.Electrocubes Installed

05000454/LER-1986-005-02, :on 860129,loss of Sample Flow Alarm Occurred & on 860130,radioactive Liquid Release Started.Loss of Sample Flow Alarm Due to Sample Pump Seal Failure.Sample Pump Rebuilt
type: Subject
page: https://kanterella.com/05000454/LER-2D1986-2D005-2D02-2C_-3Aon_860129-2Closs_of_Sample_Flow_Alarm_Occurred_-26_on_860130-2Cradioactive_Liquid_Release_Started.Loss_of_Sample_Flow_Alarm_Due_to_Sample_Pu…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-005-02, :on 860129,loss of Sample Flow Alarm Occurred & on 860130,radioactive Liquid Release Started.Loss of Sample Flow Alarm Due to Sample Pump Seal Failure.Sample Pump Rebuilt

O Receipt of Valid Start Signal. Caused by Failure of Westinghouse AR-3 Relay in Fan Breaker Closing Circuitry
type: Subject
label: 05000454/LER-1986-004-03, :on 860131 & 0205,auxiliary Charcoal Booster Fan Automatically Started W/O Receipt of Valid Start Signal. Caused by Failure of Westinghouse AR-3 Relay in Fan Breaker Closing Circuitry
page: https://kanterella.com/05000454/LER-2D1986-2D004-2D03-2C_-3Aon_860131_-26_0205-2Cauxiliary_Charcoal_Booster_Fan_Automatically_Started_W/O_Receipt_of_Valid_Start_Signal._Caused_by_Failure_of_Westinghou…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-004-03, :on 860131 & 0205,auxiliary Charcoal Booster Fan Automatically Started W/O Receipt of Valid Start Signal. Caused by Failure of Westinghouse AR-3 Relay in Fan Breaker Closing Circuitry

05000456/LER-1988-010, :on 880410,control Room Ventilation Sys Automatically Shifted to Emergency Makeup Mode of Operation. Caused by Mgt Deficiency.Setpoint Corrected to Proper Value
type: Subject
page: https://kanterella.com/05000456/LER-2D1988-2D010-2C_-3Aon_880410-2Ccontrol_Room_Ventilation_Sys_Automatically_Shifted_to_Emergency_Makeup_Mode_of_Operation._Caused_by_Mgt_Deficiency.Setpoint_Corrected…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-010, :on 880410,control Room Ventilation Sys Automatically Shifted to Emergency Makeup Mode of Operation. Caused by Mgt Deficiency.Setpoint Corrected to Proper Value

LER-1988-009, :on 880407,discovered That on 880316,using Work Traveler,Control Room Chiller Temp Controller Incorrectly Determinated.Caused by Planning Error by Contractor Mgt. Control Room Chiller Reterminated
type: Subject
label: 05000456/LER-1988-009, :on 880407,discovered That on 880316,using Work Traveler,Control Room Chiller Temp Controller Incorrectly Determinated.Caused by Planning Error by Contractor Mgt. Control Room Chiller Reterminated
page: https://kanterella.com/05000456/LER-2D1988-2D009-2C_-3Aon_880407-2Cdiscovered_That_on_880316-2Cusing_Work_Traveler-2CControl_Room_Chiller_Temp_Controller_Incorrectly_Determinated.Caused_by_Planning_Er…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-009, :on 880407,discovered That on 880316,using Work Traveler,Control Room Chiller Temp Controller Incorrectly Determinated.Caused by Planning Error by Contractor Mgt. Control Room Chiller Reterminated

LER-1988-012, :on 880620,shorting Switch on Relay Casing Intentionally Opened as Part of Reading on Phase B Overcurrent Protective Relay Resulted in Voltage Spike. Caused by Defective Test Switch
type: Subject
label: 05000457/LER-1988-012, :on 880620,shorting Switch on Relay Casing Intentionally Opened as Part of Reading on Phase B Overcurrent Protective Relay Resulted in Voltage Spike. Caused by Defective Test Switch
page: https://kanterella.com/05000457/LER-2D1988-2D012-2C_-3Aon_880620-2Cshorting_Switch_on_Relay_Casing_Intentionally_Opened_as_Part_of_Reading_on_Phase_B_Overcurrent_Protective_Relay_Resulted_in_Voltage_S…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-012, :on 880620,shorting Switch on Relay Casing Intentionally Opened as Part of Reading on Phase B Overcurrent Protective Relay Resulted in Voltage Spike. Caused by Defective Test Switch

LER-1988-014, :on 880622,reactor Trip Occurred as Result of lo-lo Level on Steam Generator 2B.Caused by Low Static Spring Preload,Dirt & Grease Partially Blocking Valve Action.Steam Generator Water Level Restored
type: Subject
label: 05000457/LER-1988-014, :on 880622,reactor Trip Occurred as Result of lo-lo Level on Steam Generator 2B.Caused by Low Static Spring Preload,Dirt & Grease Partially Blocking Valve Action.Steam Generator Water Level Restored
page: https://kanterella.com/05000457/LER-2D1988-2D014-2C_-3Aon_880622-2Creactor_Trip_Occurred_as_Result_of_lo-2Dlo_Level_on_Steam_Generator_2B.Caused_by_Low_Static_Spring_Preload-2CDirt_-26_Grease_Partiall…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-014, :on 880622,reactor Trip Occurred as Result of lo-lo Level on Steam Generator 2B.Caused by Low Static Spring Preload,Dirt & Grease Partially Blocking Valve Action.Steam Generator Water Level Restored

05000456/LER-1988-016-06, :on 880811,reactor Tripped Due to Improper Administrative Controls.Caused by Cognitive Personnel Error. Stable Plant Condition Established Following Reactor Trip.W/
type: Subject
page: https://kanterella.com/05000456/LER-2D1988-2D016-2D06-2C_-3Aon_880811-2Creactor_Tripped_Due_to_Improper_Administrative_Controls.Caused_by_Cognitive_Personnel_Error._Stable_Plant_Condition_Established_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-016-06, :on 880811,reactor Tripped Due to Improper Administrative Controls.Caused by Cognitive Personnel Error. Stable Plant Condition Established Following Reactor Trip.W/

LER-1986-003-01, :on 860129,reactor Trip & Auxiliary Feedwater Actuation Occurred.Caused by Grounded Conditions on Positive & Negative Poles of 125 Volt Dc Bus.Reservoir Mods & Updates to Filling Procedures Planned
type: Subject
label: 05000454/LER-1986-003-01, :on 860129,reactor Trip & Auxiliary Feedwater Actuation Occurred.Caused by Grounded Conditions on Positive & Negative Poles of 125 Volt Dc Bus.Reservoir Mods & Updates to Filling Procedures Planned
page: https://kanterella.com/05000454/LER-2D1986-2D003-2D01-2C_-3Aon_860129-2Creactor_Trip_-26_Auxiliary_Feedwater_Actuation_Occurred.Caused_by_Grounded_Conditions_on_Positive_-26_Negative_Poles_of_125_Volt…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-003-01, :on 860129,reactor Trip & Auxiliary Feedwater Actuation Occurred.Caused by Grounded Conditions on Positive & Negative Poles of 125 Volt Dc Bus.Reservoir Mods & Updates to Filling Procedures Planned

LER-1988-019-02, :on 880724,reactor Manually Tripped Due to Decreasing Steam Generator Levels.Caused by Mispositioning of Instrument Air Isolation Valve in 90- Closed Position. Stated Valves Stroked & Heaters Checked
type: Subject
label: 05000457/LER-1988-019-02, :on 880724,reactor Manually Tripped Due to Decreasing Steam Generator Levels.Caused by Mispositioning of Instrument Air Isolation Valve in 90% Closed Position. Stated Valves Stroked & Heaters Checked
page: https://kanterella.com/05000457/LER-2D1988-2D019-2D02-2C_-3Aon_880724-2Creactor_Manually_Tripped_Due_to_Decreasing_Steam_Generator_Levels.Caused_by_Mispositioning_of_Instrument_Air_Isolation_Valve_in_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-019-02, :on 880724,reactor Manually Tripped Due to Decreasing Steam Generator Levels.Caused by Mispositioning of Instrument Air Isolation Valve in 90% Closed Position. Stated Valves Stroked & Heaters Checked

LER-1988-018-02, :on 880722,discovered That Surveillance Requirement for Essential Svc Water Isolation Valves Not Performed After Containment Chiller Returned to Svc on 880521.Caused by Procedural Deficiency
type: Subject
label: 05000456/LER-1988-018-02, :on 880722,discovered That Surveillance Requirement for Essential Svc Water Isolation Valves Not Performed After Containment Chiller Returned to Svc on 880521.Caused by Procedural Deficiency
page: https://kanterella.com/05000456/LER-2D1988-2D018-2D02-2C_-3Aon_880722-2Cdiscovered_That_Surveillance_Requirement_for_Essential_Svc_Water_Isolation_Valves_Not_Performed_After_Containment_Chiller_Return…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-018-02, :on 880722,discovered That Surveillance Requirement for Essential Svc Water Isolation Valves Not Performed After Containment Chiller Returned to Svc on 880521.Caused by Procedural Deficiency

LER-1988-017-03, :on 880721,two Tech Spec Composite Samples Not Included in Program.Caused by Misinterpretation of Amended Tech Spec Requirements by non-licensed Chemist.Correct Interpretation of Tech Specs Verified
type: Subject
label: 05000456/LER-1988-017-03, :on 880721,two Tech Spec Composite Samples Not Included in Program.Caused by Misinterpretation of Amended Tech Spec Requirements by non-licensed Chemist.Correct Interpretation of Tech Specs Verified
page: https://kanterella.com/05000456/LER-2D1988-2D017-2D03-2C_-3Aon_880721-2Ctwo_Tech_Spec_Composite_Samples_Not_Included_in_Program.Caused_by_Misinterpretation_of_Amended_Tech_Spec_Requirements_by_non-2Dl…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-017-03, :on 880721,two Tech Spec Composite Samples Not Included in Program.Caused by Misinterpretation of Amended Tech Spec Requirements by non-licensed Chemist.Correct Interpretation of Tech Specs Verified

LER-1988-008, :on 880325 & 27,operators Noted Decreasing Vol Control Tank Level Causing Increased make-up.Caused by Improperly Locked Closed Valve Inadvertently Bumped Off Closed Seat.Valve Repaired & Reinstalled
type: Subject
label: 05000456/LER-1988-008, :on 880325 & 27,operators Noted Decreasing Vol Control Tank Level Causing Increased make-up.Caused by Improperly Locked Closed Valve Inadvertently Bumped Off Closed Seat.Valve Repaired & Reinstalled
page: https://kanterella.com/05000456/LER-2D1988-2D008-2C_-3Aon_880325_-26_27-2Coperators_Noted_Decreasing_Vol_Control_Tank_Level_Causing_Increased_make-2Dup.Caused_by_Improperly_Locked_Closed_Valve_Inadver…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-008, :on 880325 & 27,operators Noted Decreasing Vol Control Tank Level Causing Increased make-up.Caused by Improperly Locked Closed Valve Inadvertently Bumped Off Closed Seat.Valve Repaired & Reinstalled

LER-1988-005-04, :on 880321,component Cooling Water Surge Tank Level Instrumentation Discrepancies Discovered.Caused by Design Organization Error.Mods Initiated to Address Level Switches,Level Indication Cables & Labeling
type: Subject
label: 05000457/LER-1988-005-04, :on 880321,component Cooling Water Surge Tank Level Instrumentation Discrepancies Discovered.Caused by Design Organization Error.Mods Initiated to Address Level Switches,Level Indication Cables & Labeling
page: https://kanterella.com/05000457/LER-2D1988-2D005-2D04-2C_-3Aon_880321-2Ccomponent_Cooling_Water_Surge_Tank_Level_Instrumentation_Discrepancies_Discovered.Caused_by_Design_Organization_Error.Mods_Initi…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-005-04, :on 880321,component Cooling Water Surge Tank Level Instrumentation Discrepancies Discovered.Caused by Design Organization Error.Mods Initiated to Address Level Switches,Level Indication Cables & Labeling

LER-1985-101, :on 851227,reactor Tripped Due to High Steam Generator Level.Caused by Lack of Explicit Procedural Identification of Feedwater Flow Control Loop Switch Position Prior to Calibr.Procedure Revised
type: Subject
label: 05000454/LER-1985-101, :on 851227,reactor Tripped Due to High Steam Generator Level.Caused by Lack of Explicit Procedural Identification of Feedwater Flow Control Loop Switch Position Prior to Calibr.Procedure Revised
page: https://kanterella.com/05000454/LER-2D1985-2D101-2C_-3Aon_851227-2Creactor_Tripped_Due_to_High_Steam_Generator_Level.Caused_by_Lack_of_Explicit_Procedural_Identification_of_Feedwater_Flow_Control_Loop…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-101, :on 851227,reactor Tripped Due to High Steam Generator Level.Caused by Lack of Explicit Procedural Identification of Feedwater Flow Control Loop Switch Position Prior to Calibr.Procedure Revised

LER-1988-014-04, :on 880702,determined That 40 Sequencing Timer for Containment Spray Had Not Been Tested within Tech Spec Time Requirements.Caused by Procedural Deficiency. Procedure Will Be Revised
type: Subject
label: 05000456/LER-1988-014-04, :on 880702,determined That 40 Sequencing Timer for Containment Spray Had Not Been Tested within Tech Spec Time Requirements.Caused by Procedural Deficiency. Procedure Will Be Revised
page: https://kanterella.com/05000456/LER-2D1988-2D014-2D04-2C_-3Aon_880702-2Cdetermined_That_40_Sequencing_Timer_for_Containment_Spray_Had_Not_Been_Tested_within_Tech_Spec_Time_Requirements.Caused_by_Proce…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-014-04, :on 880702,determined That 40 Sequencing Timer for Containment Spray Had Not Been Tested within Tech Spec Time Requirements.Caused by Procedural Deficiency. Procedure Will Be Revised

LER-1988-018-01, :on 880702,reactor Tripped While Conducting Startup Test Bwsu NR-75A.Caused by Failure of Pressurizer Pressure Bistable 457C.Work Request A23995 Written & Failed Card Replaced by Instrument Maint Dept
type: Subject
label: 05000457/LER-1988-018-01, :on 880702,reactor Tripped While Conducting Startup Test Bwsu NR-75A.Caused by Failure of Pressurizer Pressure Bistable 457C.Work Request A23995 Written & Failed Card Replaced by Instrument Maint Dept
page: https://kanterella.com/05000457/LER-2D1988-2D018-2D01-2C_-3Aon_880702-2Creactor_Tripped_While_Conducting_Startup_Test_Bwsu_NR-2D75A.Caused_by_Failure_of_Pressurizer_Pressure_Bistable_457C.Work_Request…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-018-01, :on 880702,reactor Tripped While Conducting Startup Test Bwsu NR-75A.Caused by Failure of Pressurizer Pressure Bistable 457C.Work Request A23995 Written & Failed Card Replaced by Instrument Maint Dept

LER-1988-012-05, :on 880611,room Temps for Safety Injection & Centrifugal Charging Pump 1B Not Taken & Contaminated Spill Occurred in Areas of Room.Caused by Personnel Error. Personnel Counseled & Procedure Revised
type: Subject
label: 05000456/LER-1988-012-05, :on 880611,room Temps for Safety Injection & Centrifugal Charging Pump 1B Not Taken & Contaminated Spill Occurred in Areas of Room.Caused by Personnel Error. Personnel Counseled & Procedure Revised
page: https://kanterella.com/05000456/LER-2D1988-2D012-2D05-2C_-3Aon_880611-2Croom_Temps_for_Safety_Injection_-26_Centrifugal_Charging_Pump_1B_Not_Taken_-26_Contaminated_Spill_Occurred_in_Areas_of_Room.Caus…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-012-05, :on 880611,room Temps for Safety Injection & Centrifugal Charging Pump 1B Not Taken & Contaminated Spill Occurred in Areas of Room.Caused by Personnel Error. Personnel Counseled & Procedure Revised

05000457/LER-1988-015-02, :on 880626,feedwater (FW) Isolation & Turbine Driven FW Pump Trip Occurred.Caused by Sensitivity of Westinghouse Steam Generator D-5.FW Isolation Reset & FW Pump Restarted
type: Subject
page: https://kanterella.com/05000457/LER-2D1988-2D015-2D02-2C_-3Aon_880626-2Cfeedwater_-28FW-29_Isolation_-26_Turbine_Driven_FW_Pump_Trip_Occurred.Caused_by_Sensitivity_of_Westinghouse_Steam_Generator_D-2D…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-015-02, :on 880626,feedwater (FW) Isolation & Turbine Driven FW Pump Trip Occurred.Caused by Sensitivity of Westinghouse Steam Generator D-5.FW Isolation Reset & FW Pump Restarted

05000457/LER-1988-017-01, :on 880629,Surveillance 2BwOS 4.6.2.1.D-1 Invalid.Caused by Calculational Error.Event Reviewed W/ Personnel Involved.Attention to Detail Stressed
type: Subject
page: https://kanterella.com/05000457/LER-2D1988-2D017-2D01-2C_-3Aon_880629-2CSurveillance_2BwOS_4.6.2.1.D-2D1_Invalid.Caused_by_Calculational_Error.Event_Reviewed_W/_Personnel_Involved.Attention_to_Detail_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-017-01, :on 880629,Surveillance 2BwOS 4.6.2.1.D-1 Invalid.Caused by Calculational Error.Event Reviewed W/ Personnel Involved.Attention to Detail Stressed

Personnel
type: Subject
label: 05000457/LER-1988-001-11, :on 880305,safety Injection Pump Discharge Valve Locked Closed.Caused by Miscommunication Between Licensed Operator & Second Nonlicensed Operator.Proper Guidance on Use of Log Reviewed W/Personnel
page: https://kanterella.com/05000457/LER-2D1988-2D001-2D11-2C_-3Aon_880305-2Csafety_Injection_Pump_Discharge_Valve_Locked_Closed.Caused_by_Miscommunication_Between_Licensed_Operator_-26_Second_Nonlicensed_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-001-11, :on 880305,safety Injection Pump Discharge Valve Locked Closed.Caused by Miscommunication Between Licensed Operator & Second Nonlicensed Operator.Proper Guidance on Use of Log Reviewed W/Personnel

Personnel
type: Subject
label: 05000456/LER-1988-006-01, :on 880313,partial Loss of Auxiliary Bldg Nonaccessible Filter Plenum Position Indication Occurred. Caused by Adminstrative & Mgt Deficiency.Event Reviewed W/Individuals Involved & Reviewed W/Personnel
page: https://kanterella.com/05000456/LER-2D1988-2D006-2D01-2C_-3Aon_880313-2Cpartial_Loss_of_Auxiliary_Bldg_Nonaccessible_Filter_Plenum_Position_Indication_Occurred._Caused_by_Adminstrative_-26_Mgt_Deficie…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-006-01, :on 880313,partial Loss of Auxiliary Bldg Nonaccessible Filter Plenum Position Indication Occurred. Caused by Adminstrative & Mgt Deficiency.Event Reviewed W/Individuals Involved & Reviewed W/Personnel

LER-1988-013-04, :on 880621,reactor Trip Occurred as Result of lo-lo Steam Generator Level Due to Insufficient Feedwater Flow to Steam Generator 2A.Caused by Procedural Deficiency. Feedwater Line Restored
type: Subject
label: 05000457/LER-1988-013-04, :on 880621,reactor Trip Occurred as Result of lo-lo Steam Generator Level Due to Insufficient Feedwater Flow to Steam Generator 2A.Caused by Procedural Deficiency. Feedwater Line Restored
page: https://kanterella.com/05000457/LER-2D1988-2D013-2D04-2C_-3Aon_880621-2Creactor_Trip_Occurred_as_Result_of_lo-2Dlo_Steam_Generator_Level_Due_to_Insufficient_Feedwater_Flow_to_Steam_Generator_2A.Caused…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-013-04, :on 880621,reactor Trip Occurred as Result of lo-lo Steam Generator Level Due to Insufficient Feedwater Flow to Steam Generator 2A.Caused by Procedural Deficiency. Feedwater Line Restored

LER-1988-012-03, :on 880620,shorting Switch on Relay Resulted in Voltage Spike & Actuated Instantaneous Overcurrent Protection Relay.Caused by Defective Current Test Switch on Relay.Switch Relay Case Replaced
type: Subject
label: 05000457/LER-1988-012-03, :on 880620,shorting Switch on Relay Resulted in Voltage Spike & Actuated Instantaneous Overcurrent Protection Relay.Caused by Defective Current Test Switch on Relay.Switch Relay Case Replaced
page: https://kanterella.com/05000457/LER-2D1988-2D012-2D03-2C_-3Aon_880620-2Cshorting_Switch_on_Relay_Resulted_in_Voltage_Spike_-26_Actuated_Instantaneous_Overcurrent_Protection_Relay.Caused_by_Defective_C…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-012-03, :on 880620,shorting Switch on Relay Resulted in Voltage Spike & Actuated Instantaneous Overcurrent Protection Relay.Caused by Defective Current Test Switch on Relay.Switch Relay Case Replaced

LER-1988-011-05, :on 880607,reactor Shutdown Upon Receipt of Notification That Environ Qualification Documents for Motor Operator on RHR Isolation Valve 2SI8809B Could Not Be Found. Motor Replaced
type: Subject
label: 05000457/LER-1988-011-05, :on 880607,reactor Shutdown Upon Receipt of Notification That Environ Qualification Documents for Motor Operator on RHR Isolation Valve 2SI8809B Could Not Be Found. Motor Replaced
page: https://kanterella.com/05000457/LER-2D1988-2D011-2D05-2C_-3Aon_880607-2Creactor_Shutdown_Upon_Receipt_of_Notification_That_Environ_Qualification_Documents_for_Motor_Operator_on_RHR_Isolation_Valve_2SI…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-011-05, :on 880607,reactor Shutdown Upon Receipt of Notification That Environ Qualification Documents for Motor Operator on RHR Isolation Valve 2SI8809B Could Not Be Found. Motor Replaced

LER-1988-006, :on 880210,auxiliary Feedwater Pump 2A Auto Started.Caused by Personnel Error.Exit Procedure & Pump Initial Conditions re-established & Operator Retrained in Correct volt-Ohm Meter Application
type: Subject
label: 05000457/LER-1988-006, :on 880210,auxiliary Feedwater Pump 2A Auto Started.Caused by Personnel Error.Exit Procedure & Pump Initial Conditions re-established & Operator Retrained in Correct volt-Ohm Meter Application
page: https://kanterella.com/05000457/LER-2D1988-2D006-2C_-3Aon_880210-2Cauxiliary_Feedwater_Pump_2A_Auto_Started.Caused_by_Personnel_Error.Exit_Procedure_-26_Pump_Initial_Conditions_re-2Destablished_-26_Op…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-006, :on 880210,auxiliary Feedwater Pump 2A Auto Started.Caused by Personnel Error.Exit Procedure & Pump Initial Conditions re-established & Operator Retrained in Correct volt-Ohm Meter Application

05000456/LER-1988-013-01, :on 880609,station Chemist Informed That Four Release Tank Samples Missing.Caused by Programmatic Deficiency.Samples Will Be Kept in Locked Storage Cabinet
type: Subject
page: https://kanterella.com/05000456/LER-2D1988-2D013-2D01-2C_-3Aon_880609-2Cstation_Chemist_Informed_That_Four_Release_Tank_Samples_Missing.Caused_by_Programmatic_Deficiency.Samples_Will_Be_Kept_in_Locked…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-013-01, :on 880609,station Chemist Informed That Four Release Tank Samples Missing.Caused by Programmatic Deficiency.Samples Will Be Kept in Locked Storage Cabinet

LER-1988-007, :on 870215,unit Entered Mode 4,on 880218,pumps 1B,2A & 2B Declared Inoperable Due to Discovery That Lower Motor Bearing Vibration Readings for RHR Not Current.Caused by Programmatic Deficiency
type: Subject
label: 05000456/LER-1988-007, :on 870215,unit Entered Mode 4,on 880218,pumps 1B,2A & 2B Declared Inoperable Due to Discovery That Lower Motor Bearing Vibration Readings for RHR Not Current.Caused by Programmatic Deficiency
page: https://kanterella.com/05000456/LER-2D1988-2D007-2C_-3Aon_870215-2Cunit_Entered_Mode_4-2Con_880218-2Cpumps_1B-2C2A_-26_2B_Declared_Inoperable_Due_to_Discovery_That_Lower_Motor_Bearing_Vibration_Readin…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1988-007, :on 870215,unit Entered Mode 4,on 880218,pumps 1B,2A & 2B Declared Inoperable Due to Discovery That Lower Motor Bearing Vibration Readings for RHR Not Current.Caused by Programmatic Deficiency

LER-1988-007-01, :on 880216,reactor Vessel Flange Inner O-ring Leak Detection Manual Isolation Valve 2RC80698 Discovered Closed.Caused by Personnel Error.Sys Configuration Restored to Required Lineup
type: Subject
label: 05000457/LER-1988-007-01, :on 880216,reactor Vessel Flange Inner O-ring Leak Detection Manual Isolation Valve 2RC80698 Discovered Closed.Caused by Personnel Error.Sys Configuration Restored to Required Lineup
page: https://kanterella.com/05000457/LER-2D1988-2D007-2D01-2C_-3Aon_880216-2Creactor_Vessel_Flange_Inner_O-2Dring_Leak_Detection_Manual_Isolation_Valve_2RC80698_Discovered_Closed.Caused_by_Personnel_Error.…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1988-007-01, :on 880216,reactor Vessel Flange Inner O-ring Leak Detection Manual Isolation Valve 2RC80698 Discovered Closed.Caused by Personnel Error.Sys Configuration Restored to Required Lineup

LER-1986-006-02, :on 860212,control Room Ventilation Sys Train B Shifted to ESF Actuation on Signal from Control Room Air Intake Monitor ORE-PR033.Caused by Procedural Error During Monitor Filter Change.Checklist Implemented
type: Subject
label: 05000454/LER-1986-006-02, :on 860212,control Room Ventilation Sys Train B Shifted to ESF Actuation on Signal from Control Room Air Intake Monitor ORE-PR033.Caused by Procedural Error During Monitor Filter Change.Checklist Implemented
page: https://kanterella.com/05000454/LER-2D1986-2D006-2D02-2C_-3Aon_860212-2Ccontrol_Room_Ventilation_Sys_Train_B_Shifted_to_ESF_Actuation_on_Signal_from_Control_Room_Air_Intake_Monitor_ORE-2DPR033.Caused_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-006-02, :on 860212,control Room Ventilation Sys Train B Shifted to ESF Actuation on Signal from Control Room Air Intake Monitor ORE-PR033.Caused by Procedural Error During Monitor Filter Change.Checklist Implemented

LER-1986-007-02, :on 860212,process Radiation Monitor OPR34J Went Into Interlock Mode Due to Noise Spike on Monitor Gas Channel.Cause of Noise Spike Unknown.Troubleshooting Being Performed to Determine Cause
type: Subject
label: 05000454/LER-1986-007-02, :on 860212,process Radiation Monitor OPR34J Went Into Interlock Mode Due to Noise Spike on Monitor Gas Channel.Cause of Noise Spike Unknown.Troubleshooting Being Performed to Determine Cause
page: https://kanterella.com/05000454/LER-2D1986-2D007-2D02-2C_-3Aon_860212-2Cprocess_Radiation_Monitor_OPR34J_Went_Into_Interlock_Mode_Due_to_Noise_Spike_on_Monitor_Gas_Channel.Cause_of_Noise_Spike_Unknown…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-007-02, :on 860212,process Radiation Monitor OPR34J Went Into Interlock Mode Due to Noise Spike on Monitor Gas Channel.Cause of Noise Spike Unknown.Troubleshooting Being Performed to Determine Cause

LER-1986-009, :on 860222,during Cold Shutdown,Containment Vent Isolation Occurred Due to Undervoltage Condition at Radiation Monitors 1RT-AR011 & 1RT-AR012.Caused by Voltage Transient on 345 Kv Distribution Sys
type: Subject
label: 05000454/LER-1986-009, :on 860222,during Cold Shutdown,Containment Vent Isolation Occurred Due to Undervoltage Condition at Radiation Monitors 1RT-AR011 & 1RT-AR012.Caused by Voltage Transient on 345 Kv Distribution Sys
page: https://kanterella.com/05000454/LER-2D1986-2D009-2C_-3Aon_860222-2Cduring_Cold_Shutdown-2CContainment_Vent_Isolation_Occurred_Due_to_Undervoltage_Condition_at_Radiation_Monitors_1RT-2DAR011_-26_1RT-2D…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-009, :on 860222,during Cold Shutdown,Containment Vent Isolation Occurred Due to Undervoltage Condition at Radiation Monitors 1RT-AR011 & 1RT-AR012.Caused by Voltage Transient on 345 Kv Distribution Sys

4.3.3.6.Caused by Personnel Error.Complete Calibr on Loops Performed.Procedure Revised
type: Subject
label: 05000454/LER-1985-096, :on 851207,incorrect Containment Pressure Loops Utilized to Fulfill post-accident Monitoring Requirements, Per Tech Spec 3/4.3.3.6.Caused by Personnel Error.Complete Calibr on Loops Performed.Procedure Revised
page: https://kanterella.com/05000454/LER-2D1985-2D096-2C_-3Aon_851207-2Cincorrect_Containment_Pressure_Loops_Utilized_to_Fulfill_post-2Daccident_Monitoring_Requirements-2C_Per_Tech_Spec_3/4.3.3.6.Caused_by…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-096, :on 851207,incorrect Containment Pressure Loops Utilized to Fulfill post-accident Monitoring Requirements, Per Tech Spec 3/4.3.3.6.Caused by Personnel Error.Complete Calibr on Loops Performed.Procedure Revised

LER-1986-011-02, :on 860324,main Control Room Outside Air Intake Process Radiation Monitor B Went Into Interlock Mode Due to High Vacuum Alarm.Caused by Clogged Sample Particulate Filter.Filters on Radiation Monitors Changed
type: Subject
label: 05000454/LER-1986-011-02, :on 860324,main Control Room Outside Air Intake Process Radiation Monitor B Went Into Interlock Mode Due to High Vacuum Alarm.Caused by Clogged Sample Particulate Filter.Filters on Radiation Monitors Changed
page: https://kanterella.com/05000454/LER-2D1986-2D011-2D02-2C_-3Aon_860324-2Cmain_Control_Room_Outside_Air_Intake_Process_Radiation_Monitor_B_Went_Into_Interlock_Mode_Due_to_High_Vacuum_Alarm.Caused_by_Clo…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-011-02, :on 860324,main Control Room Outside Air Intake Process Radiation Monitor B Went Into Interlock Mode Due to High Vacuum Alarm.Caused by Clogged Sample Particulate Filter.Filters on Radiation Monitors Changed

LER-1986-002-04, :on 860126 & 0204,control Room Ventilation Actuation Occurred Due to Process Radiation Monitor OPR31J Iodine Channel Spike.Iodine Channel High Voltage Power Supply & Circuit Boards Replaced
type: Subject
label: 05000454/LER-1986-002-04, :on 860126 & 0204,control Room Ventilation Actuation Occurred Due to Process Radiation Monitor OPR31J Iodine Channel Spike.Iodine Channel High Voltage Power Supply & Circuit Boards Replaced
page: https://kanterella.com/05000454/LER-2D1986-2D002-2D04-2C_-3Aon_860126_-26_0204-2Ccontrol_Room_Ventilation_Actuation_Occurred_Due_to_Process_Radiation_Monitor_OPR31J_Iodine_Channel_Spike.Iodine_Channel…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-002-04, :on 860126 & 0204,control Room Ventilation Actuation Occurred Due to Process Radiation Monitor OPR31J Iodine Channel Spike.Iodine Channel High Voltage Power Supply & Circuit Boards Replaced

LER-1985-050, :on 850505,discovered That Surveillance Requirements for Tech Spec 3.2.5 Not Recorded Every 12 H. Temporary Procedure 85-1-383 Approved Immediately.Facility in Violation of Requirements Since 850224
type: Subject
label: 05000454/LER-1985-050, :on 850505,discovered That Surveillance Requirements for Tech Spec 3.2.5 Not Recorded Every 12 H. Temporary Procedure 85-1-383 Approved Immediately.Facility in Violation of Requirements Since 850224
page: https://kanterella.com/05000454/LER-2D1985-2D050-2C_-3Aon_850505-2Cdiscovered_That_Surveillance_Requirements_for_Tech_Spec_3.2.5_Not_Recorded_Every_12_H._Temporary_Procedure_85-2D1-2D383_Approved_Imme…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-050, :on 850505,discovered That Surveillance Requirements for Tech Spec 3.2.5 Not Recorded Every 12 H. Temporary Procedure 85-1-383 Approved Immediately.Facility in Violation of Requirements Since 850224

LER-1985-090, :on 851009,reactor Tripped Due to False Low Flow Signals from RCS Loop 1D.Caused by Venting Loop Flow Transmitter.Calibr of Reactor Coolant Flow Loop Being Revised to Restrict Work on Transmitters
type: Subject
label: 05000454/LER-1985-090, :on 851009,reactor Tripped Due to False Low Flow Signals from RCS Loop 1D.Caused by Venting Loop Flow Transmitter.Calibr of Reactor Coolant Flow Loop Being Revised to Restrict Work on Transmitters
page: https://kanterella.com/05000454/LER-2D1985-2D090-2C_-3Aon_851009-2Creactor_Tripped_Due_to_False_Low_Flow_Signals_from_RCS_Loop_1D.Caused_by_Venting_Loop_Flow_Transmitter.Calibr_of_Reactor_Coolant_Flow…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-090, :on 851009,reactor Tripped Due to False Low Flow Signals from RCS Loop 1D.Caused by Venting Loop Flow Transmitter.Calibr of Reactor Coolant Flow Loop Being Revised to Restrict Work on Transmitters

LER-1986-008, :on 860217,turbine Generator & Reactor Trips Occurred Due to Phase Differential Current Sensed by Main Transformer.Caused by Ice Buildup on Transmission Line Tower During Ice Storm.Transformer Replaced
type: Subject
label: 05000454/LER-1986-008, :on 860217,turbine Generator & Reactor Trips Occurred Due to Phase Differential Current Sensed by Main Transformer.Caused by Ice Buildup on Transmission Line Tower During Ice Storm.Transformer Replaced
page: https://kanterella.com/05000454/LER-2D1986-2D008-2C_-3Aon_860217-2Cturbine_Generator_-26_Reactor_Trips_Occurred_Due_to_Phase_Differential_Current_Sensed_by_Main_Transformer.Caused_by_Ice_Buildup_on_Tr…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-008, :on 860217,turbine Generator & Reactor Trips Occurred Due to Phase Differential Current Sensed by Main Transformer.Caused by Ice Buildup on Transmission Line Tower During Ice Storm.Transformer Replaced

05000454/LER-1985-084-01, :on 850924,fire Watch Delayed.Caused by Key Stuck in Vital Area Door Lock.Fire Watch Resumed After Another Security Person Arrived to Attend Door.Lock Repaired
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D084-2D01-2C_-3Aon_850924-2Cfire_Watch_Delayed.Caused_by_Key_Stuck_in_Vital_Area_Door_Lock.Fire_Watch_Resumed_After_Another_Security_Person_Arrived_to_Atten…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-084-01, :on 850924,fire Watch Delayed.Caused by Key Stuck in Vital Area Door Lock.Fire Watch Resumed After Another Security Person Arrived to Attend Door.Lock Repaired

LER-1985-060, :on 850616,refueling Water Storage Tank (RWST) Water Temp 103 F.Caused by Personnel Error in Not Observing Procedures for Placing RWST Heater Pump in & Out of Svc.New Procedure Being Written
type: Subject
label: 05000454/LER-1985-060, :on 850616,refueling Water Storage Tank (RWST) Water Temp 103 F.Caused by Personnel Error in Not Observing Procedures for Placing RWST Heater Pump in & Out of Svc.New Procedure Being Written
page: https://kanterella.com/05000454/LER-2D1985-2D060-2C_-3Aon_850616-2Crefueling_Water_Storage_Tank_-28RWST-29_Water_Temp_103_F.Caused_by_Personnel_Error_in_Not_Observing_Procedures_for_Placing_RWST_Heate…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-060, :on 850616,refueling Water Storage Tank (RWST) Water Temp 103 F.Caused by Personnel Error in Not Observing Procedures for Placing RWST Heater Pump in & Out of Svc.New Procedure Being Written

unit in Cold Shutdown,Inadvertent Auto Start of Diesel Generator 1A Occurred During Auxiliary Bldg Ventilation Sys ESF Logic Surveillance.Caused by Temporary Procedure.Procedure Revised
type: Subject
label: 05000454/LER-1985-095, :on 851107,w/unit in Cold Shutdown,Inadvertent Auto Start of Diesel Generator 1A Occurred During Auxiliary Bldg Ventilation Sys ESF Logic Surveillance.Caused by Temporary Procedure.Procedure Revised
page: https://kanterella.com/05000454/LER-2D1985-2D095-2C_-3Aon_851107-2Cw/unit_in_Cold_Shutdown-2CInadvertent_Auto_Start_of_Diesel_Generator_1A_Occurred_During_Auxiliary_Bldg_Ventilation_Sys_ESF_Logic_Surv…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-095, :on 851107,w/unit in Cold Shutdown,Inadvertent Auto Start of Diesel Generator 1A Occurred During Auxiliary Bldg Ventilation Sys ESF Logic Surveillance.Caused by Temporary Procedure.Procedure Revised

LER-1985-088, :on 850908 & 11,process Radiation Monitors OPR34J & OPR33J,respectively,went Into Interlock Mode.Caused by Noise Spike on Monitor Gas Channels.Train B Ventilation Sys Transferred to ESF Configuration
type: Subject
label: 05000454/LER-1985-088, :on 850908 & 11,process Radiation Monitors OPR34J & OPR33J,respectively,went Into Interlock Mode.Caused by Noise Spike on Monitor Gas Channels.Train B Ventilation Sys Transferred to ESF Configuration
page: https://kanterella.com/05000454/LER-2D1985-2D088-2C_-3Aon_850908_-26_11-2Cprocess_Radiation_Monitors_OPR34J_-26_OPR33J-2Crespectively-2Cwent_Into_Interlock_Mode.Caused_by_Noise_Spike_on_Monitor_Gas_Ch…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-088, :on 850908 & 11,process Radiation Monitors OPR34J & OPR33J,respectively,went Into Interlock Mode.Caused by Noise Spike on Monitor Gas Channels.Train B Ventilation Sys Transferred to ESF Configuration

LER-1985-081, :on 850731,following Completion of RHR Pump Operability Surveillance,Rhr Sys Declared Inoperable.Caused by Testing Valve Lineup That Allowed Only Two of Four Cold Legs to Be Available During Accident
type: Subject
label: 05000454/LER-1985-081, :on 850731,following Completion of RHR Pump Operability Surveillance,Rhr Sys Declared Inoperable.Caused by Testing Valve Lineup That Allowed Only Two of Four Cold Legs to Be Available During Accident
page: https://kanterella.com/05000454/LER-2D1985-2D081-2C_-3Aon_850731-2Cfollowing_Completion_of_RHR_Pump_Operability_Surveillance-2CRhr_Sys_Declared_Inoperable.Caused_by_Testing_Valve_Lineup_That_Allowed_O…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-081, :on 850731,following Completion of RHR Pump Operability Surveillance,Rhr Sys Declared Inoperable.Caused by Testing Valve Lineup That Allowed Only Two of Four Cold Legs to Be Available During Accident

LER-1986-001-06, :on 860116,reactor Trip Occurred Due to Ambiguities in Temporary Procedure.Caused by Insufficient Detail in Procedure to Distinguish Between Two Nearly Identical Auto Shunt Trip Test Panels
type: Subject
label: 05000454/LER-1986-001-06, :on 860116,reactor Trip Occurred Due to Ambiguities in Temporary Procedure.Caused by Insufficient Detail in Procedure to Distinguish Between Two Nearly Identical Auto Shunt Trip Test Panels
page: https://kanterella.com/05000454/LER-2D1986-2D001-2D06-2C_-3Aon_860116-2Creactor_Trip_Occurred_Due_to_Ambiguities_in_Temporary_Procedure.Caused_by_Insufficient_Detail_in_Procedure_to_Distinguish_Betwee…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1986-001-06, :on 860116,reactor Trip Occurred Due to Ambiguities in Temporary Procedure.Caused by Insufficient Detail in Procedure to Distinguish Between Two Nearly Identical Auto Shunt Trip Test Panels

05000454/LER-1985-086, :on 850829,MSIVs Declared Inoperable.Caused by Environmentally Unqualified Terminal Strips Located in Junction Boxes on Msivs.Strips Removed & Wires Reattached
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D086-2C_-3Aon_850829-2CMSIVs_Declared_Inoperable.Caused_by_Environmentally_Unqualified_Terminal_Strips_Located_in_Junction_Boxes_on_Msivs.Strips_Removed_-26…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-086, :on 850829,MSIVs Declared Inoperable.Caused by Environmentally Unqualified Terminal Strips Located in Junction Boxes on Msivs.Strips Removed & Wires Reattached

LER-1985-093, :on 851027,125-volt Dc Battery Bank & Charger Operability Weekly Surveillance Affecting 111,112 & 125-volt Dc Battery Bank & Charger Not Performed within Required Time Interval.Caused by Personnel Error
type: Subject
label: 05000454/LER-1985-093, :on 851027,125-volt Dc Battery Bank & Charger Operability Weekly Surveillance Affecting 111,112 & 125-volt Dc Battery Bank & Charger Not Performed within Required Time Interval.Caused by Personnel Error
page: https://kanterella.com/05000454/LER-2D1985-2D093-2C_-3Aon_851027-2C125-2Dvolt_Dc_Battery_Bank_-26_Charger_Operability_Weekly_Surveillance_Affecting_111-2C112_-26_125-2Dvolt_Dc_Battery_Bank_-26_Charger…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-093, :on 851027,125-volt Dc Battery Bank & Charger Operability Weekly Surveillance Affecting 111,112 & 125-volt Dc Battery Bank & Charger Not Performed within Required Time Interval.Caused by Personnel Error

LER-1985-070, :on 850724,during ASME Quarterly Surveillance Test for Train B RHR Pump (1RH01PB),pump Upper Motor Bearing Vibration Exceeded Limits.Caused by Motor Imbalance Placing Force on Motor Runner
type: Subject
label: 05000454/LER-1985-070, :on 850724,during ASME Quarterly Surveillance Test for Train B RHR Pump (1RH01PB),pump Upper Motor Bearing Vibration Exceeded Limits.Caused by Motor Imbalance Placing Force on Motor Runner
page: https://kanterella.com/05000454/LER-2D1985-2D070-2C_-3Aon_850724-2Cduring_ASME_Quarterly_Surveillance_Test_for_Train_B_RHR_Pump_-281RH01PB-29-2Cpump_Upper_Motor_Bearing_Vibration_Exceeded_Limits.Cause…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-070, :on 850724,during ASME Quarterly Surveillance Test for Train B RHR Pump (1RH01PB),pump Upper Motor Bearing Vibration Exceeded Limits.Caused by Motor Imbalance Placing Force on Motor Runner

05000454/LER-1985-094, :on 851028,process Radiation Monitor Went Into Interlock Mode Due to Check Source Test Failure.Caused by Malfunctioning Iodine Detector.Detector Replaced
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D094-2C_-3Aon_851028-2Cprocess_Radiation_Monitor_Went_Into_Interlock_Mode_Due_to_Check_Source_Test_Failure.Caused_by_Malfunctioning_Iodine_Detector.Detector…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-094, :on 851028,process Radiation Monitor Went Into Interlock Mode Due to Check Source Test Failure.Caused by Malfunctioning Iodine Detector.Detector Replaced

LER-1985-061, :on 850624,reactor Trip Occurred Due to Steam Generator 1A LO-2 Level.Caused by Attendant Inadvertent Activation of Local Overspeed Trip Bar for Feedwater Pump 1C.Trip Lever Handles Removed
type: Subject
label: 05000454/LER-1985-061, :on 850624,reactor Trip Occurred Due to Steam Generator 1A LO-2 Level.Caused by Attendant Inadvertent Activation of Local Overspeed Trip Bar for Feedwater Pump 1C.Trip Lever Handles Removed
page: https://kanterella.com/05000454/LER-2D1985-2D061-2C_-3Aon_850624-2Creactor_Trip_Occurred_Due_to_Steam_Generator_1A_LO-2D2_Level.Caused_by_Attendant_Inadvertent_Activation_of_Local_Overspeed_Trip_Bar_f…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-061, :on 850624,reactor Trip Occurred Due to Steam Generator 1A LO-2 Level.Caused by Attendant Inadvertent Activation of Local Overspeed Trip Bar for Feedwater Pump 1C.Trip Lever Handles Removed

LER-1985-082, :on 850811,waste Gas Sys Samples Not Obtained & Analyzed.Caused by Personnel Error.New Communication & Limiting Condition for Operation Action Statement Handling Mechanisms Implemented
type: Subject
label: 05000454/LER-1985-082, :on 850811,waste Gas Sys Samples Not Obtained & Analyzed.Caused by Personnel Error.New Communication & Limiting Condition for Operation Action Statement Handling Mechanisms Implemented
page: https://kanterella.com/05000454/LER-2D1985-2D082-2C_-3Aon_850811-2Cwaste_Gas_Sys_Samples_Not_Obtained_-26_Analyzed.Caused_by_Personnel_Error.New_Communication_-26_Limiting_Condition_for_Operation_Acti…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-082, :on 850811,waste Gas Sys Samples Not Obtained & Analyzed.Caused by Personnel Error.New Communication & Limiting Condition for Operation Action Statement Handling Mechanisms Implemented

LER-1985-079, :on 850809,core Axial Flux Difference (Afd) Not Logged Hourly Following Restoration of computer-generated Afd Alarm.Caused by Personnel Error.Afd Monitor Alarm Inoperable Surveillance Procedure Revised
type: Subject
label: 05000454/LER-1985-079, :on 850809,core Axial Flux Difference (Afd) Not Logged Hourly Following Restoration of computer-generated Afd Alarm.Caused by Personnel Error.Afd Monitor Alarm Inoperable Surveillance Procedure Revised
page: https://kanterella.com/05000454/LER-2D1985-2D079-2C_-3Aon_850809-2Ccore_Axial_Flux_Difference_-28Afd-29_Not_Logged_Hourly_Following_Restoration_of_computer-2Dgenerated_Afd_Alarm.Caused_by_Personnel_Er…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-079, :on 850809,core Axial Flux Difference (Afd) Not Logged Hourly Following Restoration of computer-generated Afd Alarm.Caused by Personnel Error.Afd Monitor Alarm Inoperable Surveillance Procedure Revised

Calcium Grease
type: Subject
label: 05000454/LER-1985-072, :on 850717,project Engineering Dept Notified Station That All Environmentally Qualified Limitorque Operators,W/Base Lubricant,Unqualified.Base Grease Removed & Replaced W/Calcium Grease
page: https://kanterella.com/05000454/LER-2D1985-2D072-2C_-3Aon_850717-2Cproject_Engineering_Dept_Notified_Station_That_All_Environmentally_Qualified_Limitorque_Operators-2CW/Base_Lubricant-2CUnqualified.Ba…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-072, :on 850717,project Engineering Dept Notified Station That All Environmentally Qualified Limitorque Operators,W/Base Lubricant,Unqualified.Base Grease Removed & Replaced W/Calcium Grease

LER-1985-100, :on 851211,Fire Door D-633 Found Blocked by Electrical Cord by Contractor Const Personnel.Cord Removed & Door Locked.Personnel Attended Retraining Session Re Importance of Fire Protection
type: Subject
label: 05000454/LER-1985-100, :on 851211,Fire Door D-633 Found Blocked by Electrical Cord by Contractor Const Personnel.Cord Removed & Door Locked.Personnel Attended Retraining Session Re Importance of Fire Protection
page: https://kanterella.com/05000454/LER-2D1985-2D100-2C_-3Aon_851211-2CFire_Door_D-2D633_Found_Blocked_by_Electrical_Cord_by_Contractor_Const_Personnel.Cord_Removed_-26_Door_Locked.Personnel_Attended_Retr…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-100, :on 851211,Fire Door D-633 Found Blocked by Electrical Cord by Contractor Const Personnel.Cord Removed & Door Locked.Personnel Attended Retraining Session Re Importance of Fire Protection

05000454/LER-1985-097-01, :on 851208,inadvertent Safety Injection Occurred.Caused by Personnel Procedural Error.Operators Instructed to Independently Verify Steps of Procedure
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D097-2D01-2C_-3Aon_851208-2Cinadvertent_Safety_Injection_Occurred.Caused_by_Personnel_Procedural_Error.Operators_Instructed_to_Independently_Verify_Steps_of…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-097-01, :on 851208,inadvertent Safety Injection Occurred.Caused by Personnel Procedural Error.Operators Instructed to Independently Verify Steps of Procedure

LER-1985-080, :on 850806,determined That Tech Spec Surveillance 1BOS 3.1.1-2 Did Not Account for Feedwater Tempering Line Flow.Caused by Omission from Operating Calometric Procedure.Procedure Changed
type: Subject
label: 05000454/LER-1985-080, :on 850806,determined That Tech Spec Surveillance 1BOS 3.1.1-2 Did Not Account for Feedwater Tempering Line Flow.Caused by Omission from Operating Calometric Procedure.Procedure Changed
page: https://kanterella.com/05000454/LER-2D1985-2D080-2C_-3Aon_850806-2Cdetermined_That_Tech_Spec_Surveillance_1BOS_3.1.1-2D2_Did_Not_Account_for_Feedwater_Tempering_Line_Flow.Caused_by_Omission_from_Opera…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-080, :on 850806,determined That Tech Spec Surveillance 1BOS 3.1.1-2 Did Not Account for Feedwater Tempering Line Flow.Caused by Omission from Operating Calometric Procedure.Procedure Changed

LER-1985-098, :on 851209,ESF Actuation of Main Control Room Ventilation Sys Occurred Due to Deenergization of Train a Radiation Monitors.Root Cause of Common Feedbreaker Trip to Monitor Undetermined.Event Terminated
type: Subject
label: 05000454/LER-1985-098, :on 851209,ESF Actuation of Main Control Room Ventilation Sys Occurred Due to Deenergization of Train a Radiation Monitors.Root Cause of Common Feedbreaker Trip to Monitor Undetermined.Event Terminated
page: https://kanterella.com/05000454/LER-2D1985-2D098-2C_-3Aon_851209-2CESF_Actuation_of_Main_Control_Room_Ventilation_Sys_Occurred_Due_to_Deenergization_of_Train_a_Radiation_Monitors.Root_Cause_of_Common_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-098, :on 851209,ESF Actuation of Main Control Room Ventilation Sys Occurred Due to Deenergization of Train a Radiation Monitors.Root Cause of Common Feedbreaker Trip to Monitor Undetermined.Event Terminated

LER-1985-007, :on 850111,radiation Monitors OPR33J,OPR34J, 1RT-AR012 & ORT-AR056 Went Into Interlock Condition Due to Voltage Transient Caused by Starting of Circulating Water Pump 1B.Undervoltage Setpoint Lowered
type: Subject
label: 05000454/LER-1985-007, :on 850111,radiation Monitors OPR33J,OPR34J, 1RT-AR012 & ORT-AR056 Went Into Interlock Condition Due to Voltage Transient Caused by Starting of Circulating Water Pump 1B.Undervoltage Setpoint Lowered
page: https://kanterella.com/05000454/LER-2D1985-2D007-2C_-3Aon_850111-2Cradiation_Monitors_OPR33J-2COPR34J-2C_1RT-2DAR012_-26_ORT-2DAR056_Went_Into_Interlock_Condition_Due_to_Voltage_Transient_Caused_by_St…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-007, :on 850111,radiation Monitors OPR33J,OPR34J, 1RT-AR012 & ORT-AR056 Went Into Interlock Condition Due to Voltage Transient Caused by Starting of Circulating Water Pump 1B.Undervoltage Setpoint Lowered

05000454/LER-1985-092, :on 851016,during Security Computer Outage, Fire Watch Delayed 20 Minutes Due to Vital Area Door Lock Failure.Caused by Loosening of Set Screw in Cylinder.Lock Will Be Replaced
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D092-2C_-3Aon_851016-2Cduring_Security_Computer_Outage-2C_Fire_Watch_Delayed_20_Minutes_Due_to_Vital_Area_Door_Lock_Failure.Caused_by_Loosening_of_Set_Screw…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-092, :on 851016,during Security Computer Outage, Fire Watch Delayed 20 Minutes Due to Vital Area Door Lock Failure.Caused by Loosening of Set Screw in Cylinder.Lock Will Be Replaced

LER-1985-083, :on 850820,RCS Water Inventory Surveillance Not Performed within Required Time Interval.Caused by Inadequate Review of Surveillances Listed on Surveillance Schedule. Shift Engineers Reprimanded.Event Reviewed
type: Subject
label: 05000454/LER-1985-083, :on 850820,RCS Water Inventory Surveillance Not Performed within Required Time Interval.Caused by Inadequate Review of Surveillances Listed on Surveillance Schedule. Shift Engineers Reprimanded.Event Reviewed
page: https://kanterella.com/05000454/LER-2D1985-2D083-2C_-3Aon_850820-2CRCS_Water_Inventory_Surveillance_Not_Performed_within_Required_Time_Interval.Caused_by_Inadequate_Review_of_Surveillances_Listed_on_S…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-083, :on 850820,RCS Water Inventory Surveillance Not Performed within Required Time Interval.Caused by Inadequate Review of Surveillances Listed on Surveillance Schedule. Shift Engineers Reprimanded.Event Reviewed

LER-1985-067, :on 850711,oxygen Concentration in Waste Decay Tank OD Exceeded Tech Spec 3.11.2.5 Limit of 2-.Caused by Leak in Gas Decay Tank Oa Manual Release Valve.Nuclear Work Request B20396 Written to Repair Valve
type: Subject
label: 05000454/LER-1985-067, :on 850711,oxygen Concentration in Waste Decay Tank OD Exceeded Tech Spec 3.11.2.5 Limit of 2%.Caused by Leak in Gas Decay Tank Oa Manual Release Valve.Nuclear Work Request B20396 Written to Repair Valve
page: https://kanterella.com/05000454/LER-2D1985-2D067-2C_-3Aon_850711-2Coxygen_Concentration_in_Waste_Decay_Tank_OD_Exceeded_Tech_Spec_3.11.2.5_Limit_of_2-.Caused_by_Leak_in_Gas_Decay_Tank_Oa_Manual_Releas…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-067, :on 850711,oxygen Concentration in Waste Decay Tank OD Exceeded Tech Spec 3.11.2.5 Limit of 2%.Caused by Leak in Gas Decay Tank Oa Manual Release Valve.Nuclear Work Request B20396 Written to Repair Valve

LER-1985-078, :on 850807,during Delta I Calibrs,Reactor Tripped on Power Range High Negative Flux Rate.Caused by Personnel Error.Instrument Maint Dept Personnel Counseled & Surveillance Procedures Revised
type: Subject
label: 05000454/LER-1985-078, :on 850807,during Delta I Calibrs,Reactor Tripped on Power Range High Negative Flux Rate.Caused by Personnel Error.Instrument Maint Dept Personnel Counseled & Surveillance Procedures Revised
page: https://kanterella.com/05000454/LER-2D1985-2D078-2C_-3Aon_850807-2Cduring_Delta_I_Calibrs-2CReactor_Tripped_on_Power_Range_High_Negative_Flux_Rate.Caused_by_Personnel_Error.Instrument_Maint_Dept_Perso…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-078, :on 850807,during Delta I Calibrs,Reactor Tripped on Power Range High Negative Flux Rate.Caused by Personnel Error.Instrument Maint Dept Personnel Counseled & Surveillance Procedures Revised

LER-1985-011-01, :on 850111,discovered Safety Injection Trains Feeding Cold Leg Injection Isolated.Caused by Closing of Isolation Valves Due to Concern Re Overpressurizing Rcs. Temporary Procedure Change Request Initiated
type: Subject
label: 05000454/LER-1985-011-01, :on 850111,discovered Safety Injection Trains Feeding Cold Leg Injection Isolated.Caused by Closing of Isolation Valves Due to Concern Re Overpressurizing Rcs. Temporary Procedure Change Request Initiated
page: https://kanterella.com/05000454/LER-2D1985-2D011-2D01-2C_-3Aon_850111-2Cdiscovered_Safety_Injection_Trains_Feeding_Cold_Leg_Injection_Isolated.Caused_by_Closing_of_Isolation_Valves_Due_to_Concern_Re_O…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-011-01, :on 850111,discovered Safety Injection Trains Feeding Cold Leg Injection Isolated.Caused by Closing of Isolation Valves Due to Concern Re Overpressurizing Rcs. Temporary Procedure Change Request Initiated

LER-1985-076, :on 850805,radiation Monitor OPR31J Went Into Interlock Mode.Caused by Check Source Test Failure.Work Request Written to Repair Check Source & Monitor Returned to Normal Operating Status
type: Subject
label: 05000454/LER-1985-076, :on 850805,radiation Monitor OPR31J Went Into Interlock Mode.Caused by Check Source Test Failure.Work Request Written to Repair Check Source & Monitor Returned to Normal Operating Status
page: https://kanterella.com/05000454/LER-2D1985-2D076-2C_-3Aon_850805-2Cradiation_Monitor_OPR31J_Went_Into_Interlock_Mode.Caused_by_Check_Source_Test_Failure.Work_Request_Written_to_Repair_Check_Source_-26…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-076, :on 850805,radiation Monitor OPR31J Went Into Interlock Mode.Caused by Check Source Test Failure.Work Request Written to Repair Check Source & Monitor Returned to Normal Operating Status

LER-1985-077, :on 850807,area Radiation Monitor ORT-AR056 Went Into Interlock Mode Due to Voltage Transient.Caused by Starting Circulating Water Pump 1B,resulting in Auto Start of Ob Fuel Handling Bldg Charcoal Fan
type: Subject
label: 05000454/LER-1985-077, :on 850807,area Radiation Monitor ORT-AR056 Went Into Interlock Mode Due to Voltage Transient.Caused by Starting Circulating Water Pump 1B,resulting in Auto Start of Ob Fuel Handling Bldg Charcoal Fan
page: https://kanterella.com/05000454/LER-2D1985-2D077-2C_-3Aon_850807-2Carea_Radiation_Monitor_ORT-2DAR056_Went_Into_Interlock_Mode_Due_to_Voltage_Transient.Caused_by_Starting_Circulating_Water_Pump_1B-2Cr…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-077, :on 850807,area Radiation Monitor ORT-AR056 Went Into Interlock Mode Due to Voltage Transient.Caused by Starting Circulating Water Pump 1B,resulting in Auto Start of Ob Fuel Handling Bldg Charcoal Fan

LER-1985-074, :on 850729,automatic Actuation of Fuel Handling Bldg Charcoal Booster Fan Occurred When Power Disrupted. Caused by Operator Error.Caution Card Placed at Breakers & Work Request to Correct Label Written
type: Subject
label: 05000454/LER-1985-074, :on 850729,automatic Actuation of Fuel Handling Bldg Charcoal Booster Fan Occurred When Power Disrupted. Caused by Operator Error.Caution Card Placed at Breakers & Work Request to Correct Label Written
page: https://kanterella.com/05000454/LER-2D1985-2D074-2C_-3Aon_850729-2Cautomatic_Actuation_of_Fuel_Handling_Bldg_Charcoal_Booster_Fan_Occurred_When_Power_Disrupted._Caused_by_Operator_Error.Caution_Card_P…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-074, :on 850729,automatic Actuation of Fuel Handling Bldg Charcoal Booster Fan Occurred When Power Disrupted. Caused by Operator Error.Caution Card Placed at Breakers & Work Request to Correct Label Written

LER-1985-075, :on 850801,equipment Hatch Personnel Airlock Leakage Rate Exceeded Tech Spec Limit.Caused by Procedural Inadequacy Leading to Deficient Testing Conditions.Local Leakage Rate Testing Procedures Revised
type: Subject
label: 05000454/LER-1985-075, :on 850801,equipment Hatch Personnel Airlock Leakage Rate Exceeded Tech Spec Limit.Caused by Procedural Inadequacy Leading to Deficient Testing Conditions.Local Leakage Rate Testing Procedures Revised
page: https://kanterella.com/05000454/LER-2D1985-2D075-2C_-3Aon_850801-2Cequipment_Hatch_Personnel_Airlock_Leakage_Rate_Exceeded_Tech_Spec_Limit.Caused_by_Procedural_Inadequacy_Leading_to_Deficient_Testing_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-075, :on 850801,equipment Hatch Personnel Airlock Leakage Rate Exceeded Tech Spec Limit.Caused by Procedural Inadequacy Leading to Deficient Testing Conditions.Local Leakage Rate Testing Procedures Revised

LER-1985-073, :on 850722,feedwater Isolation Occurred Due to High Level in Steam Generator 1B.Caused by Surge in Indication Level in Response to Sudden Momentary Drop in Steam Header Pressure & Increase in Steam Flow
type: Subject
label: 05000454/LER-1985-073, :on 850722,feedwater Isolation Occurred Due to High Level in Steam Generator 1B.Caused by Surge in Indication Level in Response to Sudden Momentary Drop in Steam Header Pressure & Increase in Steam Flow
page: https://kanterella.com/05000454/LER-2D1985-2D073-2C_-3Aon_850722-2Cfeedwater_Isolation_Occurred_Due_to_High_Level_in_Steam_Generator_1B.Caused_by_Surge_in_Indication_Level_in_Response_to_Sudden_Moment…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-073, :on 850722,feedwater Isolation Occurred Due to High Level in Steam Generator 1B.Caused by Surge in Indication Level in Response to Sudden Momentary Drop in Steam Header Pressure & Increase in Steam Flow

05000454/LER-1985-069, :on 850714,reactor Trip & Loss of Automatic Safeguards Actuation on Train B Occurred.Caused by Personnel Error.Power Supplies Reenergized & Solid State Protection Sys Repaired
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D069-2C_-3Aon_850714-2Creactor_Trip_-26_Loss_of_Automatic_Safeguards_Actuation_on_Train_B_Occurred.Caused_by_Personnel_Error.Power_Supplies_Reenergized_-26_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-069, :on 850714,reactor Trip & Loss of Automatic Safeguards Actuation on Train B Occurred.Caused by Personnel Error.Power Supplies Reenergized & Solid State Protection Sys Repaired

LER-1985-071, :on 850717,main Steam Line Isolation Signal Initiated During Steam Generator 1B Testing.Caused by Incorrect Procedure Allowing Redundant Pressure Rate Bistables to Be Tripped.Test Procedure Revised
type: Subject
label: 05000454/LER-1985-071, :on 850717,main Steam Line Isolation Signal Initiated During Steam Generator 1B Testing.Caused by Incorrect Procedure Allowing Redundant Pressure Rate Bistables to Be Tripped.Test Procedure Revised
page: https://kanterella.com/05000454/LER-2D1985-2D071-2C_-3Aon_850717-2Cmain_Steam_Line_Isolation_Signal_Initiated_During_Steam_Generator_1B_Testing.Caused_by_Incorrect_Procedure_Allowing_Redundant_Pressur…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-071, :on 850717,main Steam Line Isolation Signal Initiated During Steam Generator 1B Testing.Caused by Incorrect Procedure Allowing Redundant Pressure Rate Bistables to Be Tripped.Test Procedure Revised

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
type: Subject
label: 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
page: https://kanterella.com/05000454/LER-2D1985-2D068-2C_-3Aon_850713-2Clightning_Strike_Resulted_in_Reactor_Trip_-26_Damage_to_Listed_Train_B_Safeguards_Instrumentation._Caused_by_Induced_Voltage_Transien…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 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

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
type: Subject
label: 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
page: https://kanterella.com/05000454/LER-2D1985-2D066-2C_-3Aon_850712-2Coperating_Temp_Delta_T_Trip_Setpoint_Exceeded_During_Load_Rejection_Testing-2CCausing_Reactor_Trip_-26_Control_Room_Ventilation_Makeu…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 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

LER-1985-065, :on 850709,process Radiation Monitor OPR33J Went to Interlock Mode on Two Occasions.Caused by Inadvertent Bumping of Pump Flow Control Switch.Handles to Air Intake Monitors Removed
type: Subject
label: 05000454/LER-1985-065, :on 850709,process Radiation Monitor OPR33J Went to Interlock Mode on Two Occasions.Caused by Inadvertent Bumping of Pump Flow Control Switch.Handles to Air Intake Monitors Removed
page: https://kanterella.com/05000454/LER-2D1985-2D065-2C_-3Aon_850709-2Cprocess_Radiation_Monitor_OPR33J_Went_to_Interlock_Mode_on_Two_Occasions.Caused_by_Inadvertent_Bumping_of_Pump_Flow_Control_Switch.Ha…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-065, :on 850709,process Radiation Monitor OPR33J Went to Interlock Mode on Two Occasions.Caused by Inadvertent Bumping of Pump Flow Control Switch.Handles to Air Intake Monitors Removed

LER-1985-063, :on 850708,control Rod P-8 Misaligned.Decision to Trip Turbine Caused Reactor Trip Because Permissive P-7 Not Actuated.Reactor & Turbine Power Below 10-.Impulse Pressure Rescaled
type: Subject
label: 05000454/LER-1985-063, :on 850708,control Rod P-8 Misaligned.Decision to Trip Turbine Caused Reactor Trip Because Permissive P-7 Not Actuated.Reactor & Turbine Power Below 10%.Impulse Pressure Rescaled
page: https://kanterella.com/05000454/LER-2D1985-2D063-2C_-3Aon_850708-2Ccontrol_Rod_P-2D8_Misaligned.Decision_to_Trip_Turbine_Caused_Reactor_Trip_Because_Permissive_P-2D7_Not_Actuated.Reactor_-26_Turbine_P…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-063, :on 850708,control Rod P-8 Misaligned.Decision to Trip Turbine Caused Reactor Trip Because Permissive P-7 Not Actuated.Reactor & Turbine Power Below 10%.Impulse Pressure Rescaled

Personnel Responsible
type: Subject
label: 05000454/LER-1985-089, :on 850913,both Trains of Control Room Ventilation Inoperable.Caused by Workers Misreading HVAC Ductwork Drawings.Project Const Dept Will Review HVAC Drawing Conventions W/Personnel Responsible
page: https://kanterella.com/05000454/LER-2D1985-2D089-2C_-3Aon_850913-2Cboth_Trains_of_Control_Room_Ventilation_Inoperable.Caused_by_Workers_Misreading_HVAC_Ductwork_Drawings.Project_Const_Dept_Will_Review…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-089, :on 850913,both Trains of Control Room Ventilation Inoperable.Caused by Workers Misreading HVAC Ductwork Drawings.Project Const Dept Will Review HVAC Drawing Conventions W/Personnel Responsible

LER-1985-062, :on 850627,automatic Reactor Trip Initiated on Overtemp Differential Temp.Caused by Loss of Two Tripped Circulating Water Pumps.Control Circuits Replaced & Separated Into Three Cabinets
type: Subject
label: 05000454/LER-1985-062, :on 850627,automatic Reactor Trip Initiated on Overtemp Differential Temp.Caused by Loss of Two Tripped Circulating Water Pumps.Control Circuits Replaced & Separated Into Three Cabinets
page: https://kanterella.com/05000454/LER-2D1985-2D062-2C_-3Aon_850627-2Cautomatic_Reactor_Trip_Initiated_on_Overtemp_Differential_Temp.Caused_by_Loss_of_Two_Tripped_Circulating_Water_Pumps.Control_Circuits…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-062, :on 850627,automatic Reactor Trip Initiated on Overtemp Differential Temp.Caused by Loss of Two Tripped Circulating Water Pumps.Control Circuits Replaced & Separated Into Three Cabinets

LER-1985-087, :on 850902,four Auxiliary Bldg Sprinkler Sys Did Not Alarm When Tested & 10 H Elapsed Before Surveillance Entered.Caused by Failure of Equipment Attendants to Inform Shift Engineer
type: Subject
label: 05000454/LER-1985-087, :on 850902,four Auxiliary Bldg Sprinkler Sys Did Not Alarm When Tested & 10 H Elapsed Before Surveillance Entered.Caused by Failure of Equipment Attendants to Inform Shift Engineer
page: https://kanterella.com/05000454/LER-2D1985-2D087-2C_-3Aon_850902-2Cfour_Auxiliary_Bldg_Sprinkler_Sys_Did_Not_Alarm_When_Tested_-26_10_H_Elapsed_Before_Surveillance_Entered.Caused_by_Failure_of_Equipme…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-087, :on 850902,four Auxiliary Bldg Sprinkler Sys Did Not Alarm When Tested & 10 H Elapsed Before Surveillance Entered.Caused by Failure of Equipment Attendants to Inform Shift Engineer

LER-1985-064, :on 850704,voltage Transient Tripped Power Failure Alarm,Initiating Containment Ventilation Isolation. Transient Caused by Start of Circulating Water Pump 1B.Mods Will Be Made to Radiation Monitor Sensitivity
type: Subject
label: 05000454/LER-1985-064, :on 850704,voltage Transient Tripped Power Failure Alarm,Initiating Containment Ventilation Isolation. Transient Caused by Start of Circulating Water Pump 1B.Mods Will Be Made to Radiation Monitor Sensitivity
page: https://kanterella.com/05000454/LER-2D1985-2D064-2C_-3Aon_850704-2Cvoltage_Transient_Tripped_Power_Failure_Alarm-2CInitiating_Containment_Ventilation_Isolation._Transient_Caused_by_Start_of_Circulatin…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-064, :on 850704,voltage Transient Tripped Power Failure Alarm,Initiating Containment Ventilation Isolation. Transient Caused by Start of Circulating Water Pump 1B.Mods Will Be Made to Radiation Monitor Sensitivity

LER-1985-085, :on 850829,determined That Two ASME Code Class 2 Welds in Safety Injection Sys Not Examined Per ASME Requirements.Caused by Misidentification of Weld for Exam. Relief from Requirements Granted on 850903
type: Subject
label: 05000454/LER-1985-085, :on 850829,determined That Two ASME Code Class 2 Welds in Safety Injection Sys Not Examined Per ASME Requirements.Caused by Misidentification of Weld for Exam. Relief from Requirements Granted on 850903
page: https://kanterella.com/05000454/LER-2D1985-2D085-2C_-3Aon_850829-2Cdetermined_That_Two_ASME_Code_Class_2_Welds_in_Safety_Injection_Sys_Not_Examined_Per_ASME_Requirements.Caused_by_Misidentification_of…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-085, :on 850829,determined That Two ASME Code Class 2 Welds in Safety Injection Sys Not Examined Per ASME Requirements.Caused by Misidentification of Weld for Exam. Relief from Requirements Granted on 850903

LER-1985-048, :on 850424,radiation Monitor OPR32J in Main Control Room Outside Air Intake a Went Into Interlock Mode, Causing Train a of Ventilation Sys to Transfer to ESF Configuration.Caused by Dirty Filter
type: Subject
label: 05000454/LER-1985-048, :on 850424,radiation Monitor OPR32J in Main Control Room Outside Air Intake a Went Into Interlock Mode, Causing Train a of Ventilation Sys to Transfer to ESF Configuration.Caused by Dirty Filter
page: https://kanterella.com/05000454/LER-2D1985-2D048-2C_-3Aon_850424-2Cradiation_Monitor_OPR32J_in_Main_Control_Room_Outside_Air_Intake_a_Went_Into_Interlock_Mode-2C_Causing_Train_a_of_Ventilation_Sys_to_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-048, :on 850424,radiation Monitor OPR32J in Main Control Room Outside Air Intake a Went Into Interlock Mode, Causing Train a of Ventilation Sys to Transfer to ESF Configuration.Caused by Dirty Filter

LER-1985-049, :on 850424,Train a Main Control Room Ventilation Sys Transferred to Makeup Mode of Operation. Cause of ESF Actuation Unknown.Ventilation Isolation Restored to Normal Operating Status
type: Subject
label: 05000454/LER-1985-049, :on 850424,Train a Main Control Room Ventilation Sys Transferred to Makeup Mode of Operation. Cause of ESF Actuation Unknown.Ventilation Isolation Restored to Normal Operating Status
page: https://kanterella.com/05000454/LER-2D1985-2D049-2C_-3Aon_850424-2CTrain_a_Main_Control_Room_Ventilation_Sys_Transferred_to_Makeup_Mode_of_Operation._Cause_of_ESF_Actuation_Unknown.Ventilation_Isolati…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-049, :on 850424,Train a Main Control Room Ventilation Sys Transferred to Makeup Mode of Operation. Cause of ESF Actuation Unknown.Ventilation Isolation Restored to Normal Operating Status

05000454/LER-1985-053, :on 850525,reactor Trip Occurred Due to lo-lo Steam Generator Meter Level.Caused by Dirt & Filings Shorting Windings of Transformer in Inverter.Inverter Replaced
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D053-2C_-3Aon_850525-2Creactor_Trip_Occurred_Due_to_lo-2Dlo_Steam_Generator_Meter_Level.Caused_by_Dirt_-26_Filings_Shorting_Windings_of_Transformer_in_Inver…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-053, :on 850525,reactor Trip Occurred Due to lo-lo Steam Generator Meter Level.Caused by Dirt & Filings Shorting Windings of Transformer in Inverter.Inverter Replaced

LER-1985-054, :on 850524,reactor Trip Occurred Due to Turbine Trip on Low Auto Stop Oil Pressure.Caused by Fouled Return Line Strainers & Inadequate Overflow Capacity.Insp & Cleaning Program Established
type: Subject
label: 05000454/LER-1985-054, :on 850524,reactor Trip Occurred Due to Turbine Trip on Low Auto Stop Oil Pressure.Caused by Fouled Return Line Strainers & Inadequate Overflow Capacity.Insp & Cleaning Program Established
page: https://kanterella.com/05000454/LER-2D1985-2D054-2C_-3Aon_850524-2Creactor_Trip_Occurred_Due_to_Turbine_Trip_on_Low_Auto_Stop_Oil_Pressure.Caused_by_Fouled_Return_Line_Strainers_-26_Inadequate_Overflo…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-054, :on 850524,reactor Trip Occurred Due to Turbine Trip on Low Auto Stop Oil Pressure.Caused by Fouled Return Line Strainers & Inadequate Overflow Capacity.Insp & Cleaning Program Established

LER-1985-052, :on 850522,reactor Tripped at 50- Power. Caused by Turbine Trip When Electrical Fault in Unit 2 Sys Auxiliary Transformer Actuated Improperly Set Differential Relay for Unit 1 Main Power Transformer
type: Subject
label: 05000454/LER-1985-052, :on 850522,reactor Tripped at 50% Power. Caused by Turbine Trip When Electrical Fault in Unit 2 Sys Auxiliary Transformer Actuated Improperly Set Differential Relay for Unit 1 Main Power Transformer
page: https://kanterella.com/05000454/LER-2D1985-2D052-2C_-3Aon_850522-2Creactor_Tripped_at_50-_Power._Caused_by_Turbine_Trip_When_Electrical_Fault_in_Unit_2_Sys_Auxiliary_Transformer_Actuated_Improperly_Se…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-052, :on 850522,reactor Tripped at 50% Power. Caused by Turbine Trip When Electrical Fault in Unit 2 Sys Auxiliary Transformer Actuated Improperly Set Differential Relay for Unit 1 Main Power Transformer

Turbine Throttle Valves Closed.Caused by Inadequacy in Station Power Ascension Procedure.Procedure Revised
type: Subject
label: 05000454/LER-1985-051, :on 850521,reactor Trip Produced Due to Turbine Impulse Pressure Greater than 10% W/Turbine Throttle Valves Closed.Caused by Inadequacy in Station Power Ascension Procedure.Procedure Revised
page: https://kanterella.com/05000454/LER-2D1985-2D051-2C_-3Aon_850521-2Creactor_Trip_Produced_Due_to_Turbine_Impulse_Pressure_Greater_than_10-_W/Turbine_Throttle_Valves_Closed.Caused_by_Inadequacy_in_Stati…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-051, :on 850521,reactor Trip Produced Due to Turbine Impulse Pressure Greater than 10% W/Turbine Throttle Valves Closed.Caused by Inadequacy in Station Power Ascension Procedure.Procedure Revised

LER-1985-047, :on 850417,RCS Unidentified Leakage Exceeded Max Allowed Value.Caused by Leakage in Diaphragm Valves in Chemical & Vol Control Sys Letdown Flowpath.Flowpath Removed from Operation & Isolated.Valves Tightened
type: Subject
label: 05000454/LER-1985-047, :on 850417,RCS Unidentified Leakage Exceeded Max Allowed Value.Caused by Leakage in Diaphragm Valves in Chemical & Vol Control Sys Letdown Flowpath.Flowpath Removed from Operation & Isolated.Valves Tightened
page: https://kanterella.com/05000454/LER-2D1985-2D047-2C_-3Aon_850417-2CRCS_Unidentified_Leakage_Exceeded_Max_Allowed_Value.Caused_by_Leakage_in_Diaphragm_Valves_in_Chemical_-26_Vol_Control_Sys_Letdown_Flo…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-047, :on 850417,RCS Unidentified Leakage Exceeded Max Allowed Value.Caused by Leakage in Diaphragm Valves in Chemical & Vol Control Sys Letdown Flowpath.Flowpath Removed from Operation & Isolated.Valves Tightened

LER-1985-058, :on 850519,one Hourly Fire Watch Patrol Not Conducted.Caused by Personnel Assignment Error.Disciplinary Actions Taken.Addl Security Sergeant Assigned to Supervise & Ensure Proper Fire Watch Performance
type: Subject
label: 05000454/LER-1985-058, :on 850519,one Hourly Fire Watch Patrol Not Conducted.Caused by Personnel Assignment Error.Disciplinary Actions Taken.Addl Security Sergeant Assigned to Supervise & Ensure Proper Fire Watch Performance
page: https://kanterella.com/05000454/LER-2D1985-2D058-2C_-3Aon_850519-2Cone_Hourly_Fire_Watch_Patrol_Not_Conducted.Caused_by_Personnel_Assignment_Error.Disciplinary_Actions_Taken.Addl_Security_Sergeant_Ass…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-058, :on 850519,one Hourly Fire Watch Patrol Not Conducted.Caused by Personnel Assignment Error.Disciplinary Actions Taken.Addl Security Sergeant Assigned to Supervise & Ensure Proper Fire Watch Performance

LER-1985-057, :on 850528,fire Watch Patrols Restricted from Performing Rounds of Auxiliary Bldg.Caused by ALARA Concerns Due to Gaseous Radiation Release While Venting Vol Control Tank.After Survey,Fire Watches Resumed
type: Subject
label: 05000454/LER-1985-057, :on 850528,fire Watch Patrols Restricted from Performing Rounds of Auxiliary Bldg.Caused by ALARA Concerns Due to Gaseous Radiation Release While Venting Vol Control Tank.After Survey,Fire Watches Resumed
page: https://kanterella.com/05000454/LER-2D1985-2D057-2C_-3Aon_850528-2Cfire_Watch_Patrols_Restricted_from_Performing_Rounds_of_Auxiliary_Bldg.Caused_by_ALARA_Concerns_Due_to_Gaseous_Radiation_Release_Whil…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-057, :on 850528,fire Watch Patrols Restricted from Performing Rounds of Auxiliary Bldg.Caused by ALARA Concerns Due to Gaseous Radiation Release While Venting Vol Control Tank.After Survey,Fire Watches Resumed

LER-1985-059, :on 850517,hourly Fire Watch Delayed When Two Fire Patrols Combined to Perform Dual Verification of Security Doors.Caused by Security Computer Failure. Self-locking Security Doors Installed
type: Subject
label: 05000454/LER-1985-059, :on 850517,hourly Fire Watch Delayed When Two Fire Patrols Combined to Perform Dual Verification of Security Doors.Caused by Security Computer Failure. Self-locking Security Doors Installed
page: https://kanterella.com/05000454/LER-2D1985-2D059-2C_-3Aon_850517-2Chourly_Fire_Watch_Delayed_When_Two_Fire_Patrols_Combined_to_Perform_Dual_Verification_of_Security_Doors.Caused_by_Security_Computer_F…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-059, :on 850517,hourly Fire Watch Delayed When Two Fire Patrols Combined to Perform Dual Verification of Security Doors.Caused by Security Computer Failure. Self-locking Security Doors Installed

LER-1985-045, :on 850410,reactor Coolant Sample Taken 7 H & 45 Minutes After Reactor Trip Contrary to Tech Specs.Caused by Personnel Error.Shift Engineer Notified & Sample Collected & Analyzed
type: Subject
label: 05000454/LER-1985-045, :on 850410,reactor Coolant Sample Taken 7 H & 45 Minutes After Reactor Trip Contrary to Tech Specs.Caused by Personnel Error.Shift Engineer Notified & Sample Collected & Analyzed
page: https://kanterella.com/05000454/LER-2D1985-2D045-2C_-3Aon_850410-2Creactor_Coolant_Sample_Taken_7_H_-26_45_Minutes_After_Reactor_Trip_Contrary_to_Tech_Specs.Caused_by_Personnel_Error.Shift_Engineer_No…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-045, :on 850410,reactor Coolant Sample Taken 7 H & 45 Minutes After Reactor Trip Contrary to Tech Specs.Caused by Personnel Error.Shift Engineer Notified & Sample Collected & Analyzed

LER-1985-055, :on 850515,containment Floor Drain Isolation Valves 1RF026 & 1RF027 Declared Inoperable When Xomox Valve Manufacturer Reported That Valves Not Seismically Qualified. Brackets Installed on Valves
type: Subject
label: 05000454/LER-1985-055, :on 850515,containment Floor Drain Isolation Valves 1RF026 & 1RF027 Declared Inoperable When Xomox Valve Manufacturer Reported That Valves Not Seismically Qualified. Brackets Installed on Valves
page: https://kanterella.com/05000454/LER-2D1985-2D055-2C_-3Aon_850515-2Ccontainment_Floor_Drain_Isolation_Valves_1RF026_-26_1RF027_Declared_Inoperable_When_Xomox_Valve_Manufacturer_Reported_That_Valves_Not…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-055, :on 850515,containment Floor Drain Isolation Valves 1RF026 & 1RF027 Declared Inoperable When Xomox Valve Manufacturer Reported That Valves Not Seismically Qualified. Brackets Installed on Valves

LER-1985-046, :on 850421,reactor Tripped Due to Steam Generator Lo-2 Level.Caused by Auxiliary Relay Sticking in Energized Position Producing Isolation of Feedwater Control Valves.Relays Replaced
type: Subject
label: 05000454/LER-1985-046, :on 850421,reactor Tripped Due to Steam Generator Lo-2 Level.Caused by Auxiliary Relay Sticking in Energized Position Producing Isolation of Feedwater Control Valves.Relays Replaced
page: https://kanterella.com/05000454/LER-2D1985-2D046-2C_-3Aon_850421-2Creactor_Tripped_Due_to_Steam_Generator_Lo-2D2_Level.Caused_by_Auxiliary_Relay_Sticking_in_Energized_Position_Producing_Isolation_of_F…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-046, :on 850421,reactor Tripped Due to Steam Generator Lo-2 Level.Caused by Auxiliary Relay Sticking in Energized Position Producing Isolation of Feedwater Control Valves.Relays Replaced

LER-1985-056, :on 850515,CECo Engineering Notified Station That Rupture of Common Blowdown Line to Condenser or high-energy Auxiliary Steam Sys Line Could Produce Unacceptably Harsh Environ.Flowrate Reduced
type: Subject
label: 05000454/LER-1985-056, :on 850515,CECo Engineering Notified Station That Rupture of Common Blowdown Line to Condenser or high-energy Auxiliary Steam Sys Line Could Produce Unacceptably Harsh Environ.Flowrate Reduced
page: https://kanterella.com/05000454/LER-2D1985-2D056-2C_-3Aon_850515-2CCECo_Engineering_Notified_Station_That_Rupture_of_Common_Blowdown_Line_to_Condenser_or_high-2Denergy_Auxiliary_Steam_Sys_Line_Could_P…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-056, :on 850515,CECo Engineering Notified Station That Rupture of Common Blowdown Line to Condenser or high-energy Auxiliary Steam Sys Line Could Produce Unacceptably Harsh Environ.Flowrate Reduced

05000454/LER-1984-012-01, :on 841110,five Radiation Monitors Lost Power. Caused by Power Down of non-ESF Electrical Bus.Power Supply Book Revised to Correctly Indicate Electrical Feeds to Monitors
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D012-2D01-2C_-3Aon_841110-2Cfive_Radiation_Monitors_Lost_Power._Caused_by_Power_Down_of_non-2DESF_Electrical_Bus.Power_Supply_Book_Revised_to_Correctly_Indi…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-012-01, :on 841110,five Radiation Monitors Lost Power. Caused by Power Down of non-ESF Electrical Bus.Power Supply Book Revised to Correctly Indicate Electrical Feeds to Monitors

05000454/LER-1985-041, :on 850412,Train B Main Control Room Ventilation Sys Automatically Realigned to Makeup Mode. Caused by Personnel Error.Individual Counseled
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D041-2C_-3Aon_850412-2CTrain_B_Main_Control_Room_Ventilation_Sys_Automatically_Realigned_to_Makeup_Mode._Caused_by_Personnel_Error.Individual_Counseled
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-041, :on 850412,Train B Main Control Room Ventilation Sys Automatically Realigned to Makeup Mode. Caused by Personnel Error.Individual Counseled

LER-1985-044, :on 850403,discovered Tech Spec Limiting Condition for Operation Action Statement Not Entered for Containment Isolation Valve Maint & Time Test Not Performed. Caused by Staff Error.Procedure Specs Issued
type: Subject
label: 05000454/LER-1985-044, :on 850403,discovered Tech Spec Limiting Condition for Operation Action Statement Not Entered for Containment Isolation Valve Maint & Time Test Not Performed. Caused by Staff Error.Procedure Specs Issued
page: https://kanterella.com/05000454/LER-2D1985-2D044-2C_-3Aon_850403-2Cdiscovered_Tech_Spec_Limiting_Condition_for_Operation_Action_Statement_Not_Entered_for_Containment_Isolation_Valve_Maint_-26_Time_Tes…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-044, :on 850403,discovered Tech Spec Limiting Condition for Operation Action Statement Not Entered for Containment Isolation Valve Maint & Time Test Not Performed. Caused by Staff Error.Procedure Specs Issued

05000454/LER-1985-039, :on 850402,reactor Trip Occurred Due to Steam Generator 1B LO-2 Level.Caused by Loss of Feedwater Flow from Feedwater Pump 1B.Procedure Used for Power Ascension Revised
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D039-2C_-3Aon_850402-2Creactor_Trip_Occurred_Due_to_Steam_Generator_1B_LO-2D2_Level.Caused_by_Loss_of_Feedwater_Flow_from_Feedwater_Pump_1B.Procedure_Used_f…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-039, :on 850402,reactor Trip Occurred Due to Steam Generator 1B LO-2 Level.Caused by Loss of Feedwater Flow from Feedwater Pump 1B.Procedure Used for Power Ascension Revised

LER-1985-042, :on 850329 & 0410,reactor Tripped Due to Four Shutdown Bank a Group 1 Rods Losing Gripper Coil Current & Falling Into Core.Caused by Faulty Circuit Card in CRD Logic Cabinet.Card Replaced
type: Subject
label: 05000454/LER-1985-042, :on 850329 & 0410,reactor Tripped Due to Four Shutdown Bank a Group 1 Rods Losing Gripper Coil Current & Falling Into Core.Caused by Faulty Circuit Card in CRD Logic Cabinet.Card Replaced
page: https://kanterella.com/05000454/LER-2D1985-2D042-2C_-3Aon_850329_-26_0410-2Creactor_Tripped_Due_to_Four_Shutdown_Bank_a_Group_1_Rods_Losing_Gripper_Coil_Current_-26_Falling_Into_Core.Caused_by_Faulty_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-042, :on 850329 & 0410,reactor Tripped Due to Four Shutdown Bank a Group 1 Rods Losing Gripper Coil Current & Falling Into Core.Caused by Faulty Circuit Card in CRD Logic Cabinet.Card Replaced

05000454/LER-1985-036, :on 850327,radiation Monitors OPR34J & 1RT-AR012 Went Into Interlock Mode Due to Power Failure. Caused by Voltage Transient Due to Bushing Failure on Offsite Transformer
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D036-2C_-3Aon_850327-2Cradiation_Monitors_OPR34J_-26_1RT-2DAR012_Went_Into_Interlock_Mode_Due_to_Power_Failure._Caused_by_Voltage_Transient_Due_to_Bushing_F…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-036, :on 850327,radiation Monitors OPR34J & 1RT-AR012 Went Into Interlock Mode Due to Power Failure. Caused by Voltage Transient Due to Bushing Failure on Offsite Transformer

LER-1985-043, :on 850410,fire Watches in Auxiliary Bldg Suspended for 3 H Due to Evacuation.Caused by ALARA Concerns Following Rupture of Boric Acid Evaporator Rupture Disk.Area Surveyed by Health Physics Personnel
type: Subject
label: 05000454/LER-1985-043, :on 850410,fire Watches in Auxiliary Bldg Suspended for 3 H Due to Evacuation.Caused by ALARA Concerns Following Rupture of Boric Acid Evaporator Rupture Disk.Area Surveyed by Health Physics Personnel
page: https://kanterella.com/05000454/LER-2D1985-2D043-2C_-3Aon_850410-2Cfire_Watches_in_Auxiliary_Bldg_Suspended_for_3_H_Due_to_Evacuation.Caused_by_ALARA_Concerns_Following_Rupture_of_Boric_Acid_Evaporato…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-043, :on 850410,fire Watches in Auxiliary Bldg Suspended for 3 H Due to Evacuation.Caused by ALARA Concerns Following Rupture of Boric Acid Evaporator Rupture Disk.Area Surveyed by Health Physics Personnel

LER-1985-040, :on 850319,control Room Ventilation Sys Tech Spec Limiting Condition for Operation Action Statement Not Entered within Required Time Limit When Train a Process Radiation Monitor Not Available
type: Subject
label: 05000454/LER-1985-040, :on 850319,control Room Ventilation Sys Tech Spec Limiting Condition for Operation Action Statement Not Entered within Required Time Limit When Train a Process Radiation Monitor Not Available
page: https://kanterella.com/05000454/LER-2D1985-2D040-2C_-3Aon_850319-2Ccontrol_Room_Ventilation_Sys_Tech_Spec_Limiting_Condition_for_Operation_Action_Statement_Not_Entered_within_Required_Time_Limit_When_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-040, :on 850319,control Room Ventilation Sys Tech Spec Limiting Condition for Operation Action Statement Not Entered within Required Time Limit When Train a Process Radiation Monitor Not Available

LER-1985-038, :from 850117-0331,CO2 Fire Protection Sys Valve Alignment Not Verified Per Tech Specs.Caused by Surveillance Coordinator Error.Surveillance Coordinator Instructed to Check Failed Surveillances
type: Subject
label: 05000454/LER-1985-038, :from 850117-0331,CO2 Fire Protection Sys Valve Alignment Not Verified Per Tech Specs.Caused by Surveillance Coordinator Error.Surveillance Coordinator Instructed to Check Failed Surveillances
page: https://kanterella.com/05000454/LER-2D1985-2D038-2C_-3Afrom_850117-2D0331-2CCO2_Fire_Protection_Sys_Valve_Alignment_Not_Verified_Per_Tech_Specs.Caused_by_Surveillance_Coordinator_Error.Surveillance_Co…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-038, :from 850117-0331,CO2 Fire Protection Sys Valve Alignment Not Verified Per Tech Specs.Caused by Surveillance Coordinator Error.Surveillance Coordinator Instructed to Check Failed Surveillances

05000454/LER-1985-032, :on 850314,low Pressure Feedwater Heater Nonreturn Check Valve 14C Discovered Improperly Installed. Caused by Const Installation Error.Valve Reinstalled Correctly
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D032-2C_-3Aon_850314-2Clow_Pressure_Feedwater_Heater_Nonreturn_Check_Valve_14C_Discovered_Improperly_Installed._Caused_by_Const_Installation_Error.Valve_Rei…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-032, :on 850314,low Pressure Feedwater Heater Nonreturn Check Valve 14C Discovered Improperly Installed. Caused by Const Installation Error.Valve Reinstalled Correctly

05000454/LER-1985-035, :on 850314,during Plant Recovery Following Loss of Offsite Power Test,Safety Injection Occurred Due to Low Steam Line Pressure.Caused by Operational Condition of Plant
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D035-2C_-3Aon_850314-2Cduring_Plant_Recovery_Following_Loss_of_Offsite_Power_Test-2CSafety_Injection_Occurred_Due_to_Low_Steam_Line_Pressure.Caused_by_Opera…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-035, :on 850314,during Plant Recovery Following Loss of Offsite Power Test,Safety Injection Occurred Due to Low Steam Line Pressure.Caused by Operational Condition of Plant

LER-1985-037, :on 850323,while Plant Operated in Mode 5,main Control Room Outside Air Intake Radiation Monitor OPR33J Went Into Interlock Mode.Caused by Dirty Particulate Filter. Filters Now Changed Daily
type: Subject
label: 05000454/LER-1985-037, :on 850323,while Plant Operated in Mode 5,main Control Room Outside Air Intake Radiation Monitor OPR33J Went Into Interlock Mode.Caused by Dirty Particulate Filter. Filters Now Changed Daily
page: https://kanterella.com/05000454/LER-2D1985-2D037-2C_-3Aon_850323-2Cwhile_Plant_Operated_in_Mode_5-2Cmain_Control_Room_Outside_Air_Intake_Radiation_Monitor_OPR33J_Went_Into_Interlock_Mode.Caused_by_Dir…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-037, :on 850323,while Plant Operated in Mode 5,main Control Room Outside Air Intake Radiation Monitor OPR33J Went Into Interlock Mode.Caused by Dirty Particulate Filter. Filters Now Changed Daily

Or Interlock Alarm,Due to Externally Generated Noise.Cause of Noise Unknown
type: Subject
label: 05000454/LER-1984-033-03, :on 841218,26,30,850102 & 10,gas Monitor Channels on Radiation Monitors OPR34J & OPR33J Went Into High Radiation &/Or Interlock Alarm,Due to Externally Generated Noise.Cause of Noise Unknown
page: https://kanterella.com/05000454/LER-2D1984-2D033-2D03-2C_-3Aon_841218-2C26-2C30-2C850102_-26_10-2Cgas_Monitor_Channels_on_Radiation_Monitors_OPR34J_-26_OPR33J_Went_Into_High_Radiation_-26/Or_Interlock…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-033-03, :on 841218,26,30,850102 & 10,gas Monitor Channels on Radiation Monitors OPR34J & OPR33J Went Into High Radiation &/Or Interlock Alarm,Due to Externally Generated Noise.Cause of Noise Unknown

05000454/LER-1984-032-03, :on 841221,fire Penetration W/Four Conduit Pipes Discovered Improperly Sealed.Cause Not Stated. Penetration Sealed & Fire Watch Established
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D032-2D03-2C_-3Aon_841221-2Cfire_Penetration_W/Four_Conduit_Pipes_Discovered_Improperly_Sealed.Cause_Not_Stated._Penetration_Sealed_-26_Fire_Watch_Establish…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-032-03, :on 841221,fire Penetration W/Four Conduit Pipes Discovered Improperly Sealed.Cause Not Stated. Penetration Sealed & Fire Watch Established

LER-1984-031-04, :on 841215,17 & 19,boron Dilution Protection Sys Actuated.Caused by Electrical Noise Spikes on Nuclear Power Source Range Channels.After Origin Determined,Operator Realigned Charging Pump Suction to Line Up
type: Subject
label: 05000454/LER-1984-031-04, :on 841215,17 & 19,boron Dilution Protection Sys Actuated.Caused by Electrical Noise Spikes on Nuclear Power Source Range Channels.After Origin Determined,Operator Realigned Charging Pump Suction to Line Up
page: https://kanterella.com/05000454/LER-2D1984-2D031-2D04-2C_-3Aon_841215-2C17_-26_19-2Cboron_Dilution_Protection_Sys_Actuated.Caused_by_Electrical_Noise_Spikes_on_Nuclear_Power_Source_Range_Channels.Afte…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-031-04, :on 841215,17 & 19,boron Dilution Protection Sys Actuated.Caused by Electrical Noise Spikes on Nuclear Power Source Range Channels.After Origin Determined,Operator Realigned Charging Pump Suction to Line Up

LER-1985-028, :on 850304,reactor Tripped Due to Manual Turbine Trip.Caused by Abnormally Fluctuating Generator Output.Training Dept Will Emphasize That Turbine Power May Vary from Generator MW Output
type: Subject
label: 05000454/LER-1985-028, :on 850304,reactor Tripped Due to Manual Turbine Trip.Caused by Abnormally Fluctuating Generator Output.Training Dept Will Emphasize That Turbine Power May Vary from Generator MW Output
page: https://kanterella.com/05000454/LER-2D1985-2D028-2C_-3Aon_850304-2Creactor_Tripped_Due_to_Manual_Turbine_Trip.Caused_by_Abnormally_Fluctuating_Generator_Output.Training_Dept_Will_Emphasize_That_Turbin…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-028, :on 850304,reactor Tripped Due to Manual Turbine Trip.Caused by Abnormally Fluctuating Generator Output.Training Dept Will Emphasize That Turbine Power May Vary from Generator MW Output

LER-1985-034, :on 850318,during MSIV Operability Test, Operator Accidentally Actuated Manual Safety Injection Handswitch Instead of Manual Main Steam Isolation Handswitch.Operators Reminded to Read Labels
type: Subject
label: 05000454/LER-1985-034, :on 850318,during MSIV Operability Test, Operator Accidentally Actuated Manual Safety Injection Handswitch Instead of Manual Main Steam Isolation Handswitch.Operators Reminded to Read Labels
page: https://kanterella.com/05000454/LER-2D1985-2D034-2C_-3Aon_850318-2Cduring_MSIV_Operability_Test-2C_Operator_Accidentally_Actuated_Manual_Safety_Injection_Handswitch_Instead_of_Manual_Main_Steam_Isolat…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-034, :on 850318,during MSIV Operability Test, Operator Accidentally Actuated Manual Safety Injection Handswitch Instead of Manual Main Steam Isolation Handswitch.Operators Reminded to Read Labels

Chem Technician Comparing Package Contents to DOT Sticker Instead of Packing List.Procedures Being Revised
type: Subject
label: 05000454/LER-1984-034-03, :on 841227,discrepancy in Number of Sources Received on 841221 Discovered.Caused by Rad/Chem Technician Comparing Package Contents to DOT Sticker Instead of Packing List.Procedures Being Revised
page: https://kanterella.com/05000454/LER-2D1984-2D034-2D03-2C_-3Aon_841227-2Cdiscrepancy_in_Number_of_Sources_Received_on_841221_Discovered.Caused_by_Rad/Chem_Technician_Comparing_Package_Contents_to_DOT_S…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-034-03, :on 841227,discrepancy in Number of Sources Received on 841221 Discovered.Caused by Rad/Chem Technician Comparing Package Contents to DOT Sticker Instead of Packing List.Procedures Being Revised

LER-1985-033, :on 850314,particulate Filter & Iodine Cartridge Collected from Auxiliary Bldg Vent Stack Monitors 1RE-PR028 & 2RE-PR028 Not Analyzed as Required by Tech Spec Table 4.11-2.Caused by Personnel Error
type: Subject
label: 05000454/LER-1985-033, :on 850314,particulate Filter & Iodine Cartridge Collected from Auxiliary Bldg Vent Stack Monitors 1RE-PR028 & 2RE-PR028 Not Analyzed as Required by Tech Spec Table 4.11-2.Caused by Personnel Error
page: https://kanterella.com/05000454/LER-2D1985-2D033-2C_-3Aon_850314-2Cparticulate_Filter_-26_Iodine_Cartridge_Collected_from_Auxiliary_Bldg_Vent_Stack_Monitors_1RE-2DPR028_-26_2RE-2DPR028_Not_Analyzed_as…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-033, :on 850314,particulate Filter & Iodine Cartridge Collected from Auxiliary Bldg Vent Stack Monitors 1RE-PR028 & 2RE-PR028 Not Analyzed as Required by Tech Spec Table 4.11-2.Caused by Personnel Error

LER-1984-030-03, :on 841218,instrument Bus 111 Deenergized & Boron Dilution on Protection Sys Actuated Due to Deenergization of Nuclear Instrumentation Channel I.Caused by Shorted Capacitor in Control Circuitry
type: Subject
label: 05000454/LER-1984-030-03, :on 841218,instrument Bus 111 Deenergized & Boron Dilution on Protection Sys Actuated Due to Deenergization of Nuclear Instrumentation Channel I.Caused by Shorted Capacitor in Control Circuitry
page: https://kanterella.com/05000454/LER-2D1984-2D030-2D03-2C_-3Aon_841218-2Cinstrument_Bus_111_Deenergized_-26_Boron_Dilution_on_Protection_Sys_Actuated_Due_to_Deenergization_of_Nuclear_Instrumentation_Ch…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-030-03, :on 841218,instrument Bus 111 Deenergized & Boron Dilution on Protection Sys Actuated Due to Deenergization of Nuclear Instrumentation Channel I.Caused by Shorted Capacitor in Control Circuitry

LER-1984-042-02, :on 841031,data Sheet Incomplete for Surveillance 4.7.10.3.1 Not Accounting for electro-manual Pilot Control for Valve.Caused by Typo.River Screen House CO2 Sys Walked Down & Procedure Revised
type: Subject
label: 05000454/LER-1984-042-02, :on 841031,data Sheet Incomplete for Surveillance 4.7.10.3.1 Not Accounting for electro-manual Pilot Control for Valve.Caused by Typo.River Screen House CO2 Sys Walked Down & Procedure Revised
page: https://kanterella.com/05000454/LER-2D1984-2D042-2D02-2C_-3Aon_841031-2Cdata_Sheet_Incomplete_for_Surveillance_4.7.10.3.1_Not_Accounting_for_electro-2Dmanual_Pilot_Control_for_Valve.Caused_by_Typo.Riv…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-042-02, :on 841031,data Sheet Incomplete for Surveillance 4.7.10.3.1 Not Accounting for electro-manual Pilot Control for Valve.Caused by Typo.River Screen House CO2 Sys Walked Down & Procedure Revised

LER-1985-025, :on 850301,emergency Trip Header Low Pressure Reactor Trip Surveillance Not Performed within Required Interval Prior to Reactor Startup.Caused by Surveillance Schedule Program Not Listing Applicable Mode
type: Subject
label: 05000454/LER-1985-025, :on 850301,emergency Trip Header Low Pressure Reactor Trip Surveillance Not Performed within Required Interval Prior to Reactor Startup.Caused by Surveillance Schedule Program Not Listing Applicable Mode
page: https://kanterella.com/05000454/LER-2D1985-2D025-2C_-3Aon_850301-2Cemergency_Trip_Header_Low_Pressure_Reactor_Trip_Surveillance_Not_Performed_within_Required_Interval_Prior_to_Reactor_Startup.Caused_b…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-025, :on 850301,emergency Trip Header Low Pressure Reactor Trip Surveillance Not Performed within Required Interval Prior to Reactor Startup.Caused by Surveillance Schedule Program Not Listing Applicable Mode

LER-1984-025-04, :on 841213,reactor Trip Occurred Due to Instrumentation Calibr of Turbine Impulse Pressure Channel. Caused by Procedural Error.Instrumentation Calibr Surveillance Procedure Revised
type: Subject
label: 05000454/LER-1984-025-04, :on 841213,reactor Trip Occurred Due to Instrumentation Calibr of Turbine Impulse Pressure Channel. Caused by Procedural Error.Instrumentation Calibr Surveillance Procedure Revised
page: https://kanterella.com/05000454/LER-2D1984-2D025-2D04-2C_-3Aon_841213-2Creactor_Trip_Occurred_Due_to_Instrumentation_Calibr_of_Turbine_Impulse_Pressure_Channel._Caused_by_Procedural_Error.Instrumentat…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-025-04, :on 841213,reactor Trip Occurred Due to Instrumentation Calibr of Turbine Impulse Pressure Channel. Caused by Procedural Error.Instrumentation Calibr Surveillance Procedure Revised

05000454/LER-1985-023-01, :on 850227,automatic Safety Injection Actuation Occurred.Caused by Improper Calibr of Digital electro- Hydraulic Controllers & Valve Interlocks.Valve Positions Recalibr
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D023-2D01-2C_-3Aon_850227-2Cautomatic_Safety_Injection_Actuation_Occurred.Caused_by_Improper_Calibr_of_Digital_electro-2D_Hydraulic_Controllers_-26_Valve_In…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-023-01, :on 850227,automatic Safety Injection Actuation Occurred.Caused by Improper Calibr of Digital electro- Hydraulic Controllers & Valve Interlocks.Valve Positions Recalibr

LER-1984-028-03, :on 841207,gas Monitor Channels of Radiation Monitors OPR32J & OPR36J Went Into High Radiation & Interlock Alarm.Apparently Due to Externally Generated Electrical Noise.Alarms Reset
type: Subject
label: 05000454/LER-1984-028-03, :on 841207,gas Monitor Channels of Radiation Monitors OPR32J & OPR36J Went Into High Radiation & Interlock Alarm.Apparently Due to Externally Generated Electrical Noise.Alarms Reset
page: https://kanterella.com/05000454/LER-2D1984-2D028-2D03-2C_-3Aon_841207-2Cgas_Monitor_Channels_of_Radiation_Monitors_OPR32J_-26_OPR36J_Went_Into_High_Radiation_-26_Interlock_Alarm.Apparently_Due_to_Exte…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-028-03, :on 841207,gas Monitor Channels of Radiation Monitors OPR32J & OPR36J Went Into High Radiation & Interlock Alarm.Apparently Due to Externally Generated Electrical Noise.Alarms Reset

LER-1984-027-04, :on 841212,21 & 22,main Control Room Outside Air Intake Gas Monitor Channels OPR32J,OPR33J,OPR36J Received High Radiation & Interlock Alarms During Filter Change.Caused by Noise at Controllers
type: Subject
label: 05000454/LER-1984-027-04, :on 841212,21 & 22,main Control Room Outside Air Intake Gas Monitor Channels OPR32J,OPR33J,OPR36J Received High Radiation & Interlock Alarms During Filter Change.Caused by Noise at Controllers
page: https://kanterella.com/05000454/LER-2D1984-2D027-2D04-2C_-3Aon_841212-2C21_-26_22-2Cmain_Control_Room_Outside_Air_Intake_Gas_Monitor_Channels_OPR32J-2COPR33J-2COPR36J_Received_High_Radiation_-26_Inter…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-027-04, :on 841212,21 & 22,main Control Room Outside Air Intake Gas Monitor Channels OPR32J,OPR33J,OPR36J Received High Radiation & Interlock Alarms During Filter Change.Caused by Noise at Controllers

05000454/LER-1984-023-04, :on 841208,during Digital Rod Position Indication Surveillance,Single Control Rod in Control Bank D Moved Out of Core.Caused by Reversed CRD Mechanism Coils. Wiring Corrected
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D023-2D04-2C_-3Aon_841208-2Cduring_Digital_Rod_Position_Indication_Surveillance-2CSingle_Control_Rod_in_Control_Bank_D_Moved_Out_of_Core.Caused_by_Reversed_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-023-04, :on 841208,during Digital Rod Position Indication Surveillance,Single Control Rod in Control Bank D Moved Out of Core.Caused by Reversed CRD Mechanism Coils. Wiring Corrected

LER-1984-029-02, :on 841205,VC Sys Makeup Fan Automatically Started & Sys Switched to Makeup Mode.Caused by Trip & Interlock Actuation of Process Radiation Monitors Being Serviced.Monitors Restarted & VC Sys Restored
type: Subject
label: 05000454/LER-1984-029-02, :on 841205,VC Sys Makeup Fan Automatically Started & Sys Switched to Makeup Mode.Caused by Trip & Interlock Actuation of Process Radiation Monitors Being Serviced.Monitors Restarted & VC Sys Restored
page: https://kanterella.com/05000454/LER-2D1984-2D029-2D02-2C_-3Aon_841205-2CVC_Sys_Makeup_Fan_Automatically_Started_-26_Sys_Switched_to_Makeup_Mode.Caused_by_Trip_-26_Interlock_Actuation_of_Process_Radiat…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-029-02, :on 841205,VC Sys Makeup Fan Automatically Started & Sys Switched to Makeup Mode.Caused by Trip & Interlock Actuation of Process Radiation Monitors Being Serviced.Monitors Restarted & VC Sys Restored

O Dedicated Monitors. Caused by Particulate Buildup on Filters
type: Subject
label: 05000454/LER-1984-024-04, :on 841129,both Radiation Monitoring Sys CRT Displays in Control Room Became Inoperable,Resulting in Loss of Indication & Alarm for Monitors W/O Dedicated Monitors. Caused by Particulate Buildup on Filters
page: https://kanterella.com/05000454/LER-2D1984-2D024-2D04-2C_-3Aon_841129-2Cboth_Radiation_Monitoring_Sys_CRT_Displays_in_Control_Room_Became_Inoperable-2CResulting_in_Loss_of_Indication_-26_Alarm_for_Mon…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-024-04, :on 841129,both Radiation Monitoring Sys CRT Displays in Control Room Became Inoperable,Resulting in Loss of Indication & Alarm for Monitors W/O Dedicated Monitors. Caused by Particulate Buildup on Filters

LER-1984-026-04, :on 841202,boron Dilution Sys Blocked for Longer than Tech Spec Limits.Caused by Channel N31 Being Out of Svc & Channel N32 Being Blocked for Trouble Shooting of Noise Spikes for 63 Minutes
type: Subject
label: 05000454/LER-1984-026-04, :on 841202,boron Dilution Sys Blocked for Longer than Tech Spec Limits.Caused by Channel N31 Being Out of Svc & Channel N32 Being Blocked for Trouble Shooting of Noise Spikes for 63 Minutes
page: https://kanterella.com/05000454/LER-2D1984-2D026-2D04-2C_-3Aon_841202-2Cboron_Dilution_Sys_Blocked_for_Longer_than_Tech_Spec_Limits.Caused_by_Channel_N31_Being_Out_of_Svc_-26_Channel_N32_Being_Blocked…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-026-04, :on 841202,boron Dilution Sys Blocked for Longer than Tech Spec Limits.Caused by Channel N31 Being Out of Svc & Channel N32 Being Blocked for Trouble Shooting of Noise Spikes for 63 Minutes

LER-1984-022-05, :on 841129,boron Dilution Protection Sys (Bdps) Actuations Occurred Four Times Because of Surveillances on Source Range Instruments.Caused by Bdps Not Blocked. Surveillance Revised
type: Subject
label: 05000454/LER-1984-022-05, :on 841129,boron Dilution Protection Sys (Bdps) Actuations Occurred Four Times Because of Surveillances on Source Range Instruments.Caused by Bdps Not Blocked. Surveillance Revised
page: https://kanterella.com/05000454/LER-2D1984-2D022-2D05-2C_-3Aon_841129-2Cboron_Dilution_Protection_Sys_-28Bdps-29_Actuations_Occurred_Four_Times_Because_of_Surveillances_on_Source_Range_Instruments.Cau…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-022-05, :on 841129,boron Dilution Protection Sys (Bdps) Actuations Occurred Four Times Because of Surveillances on Source Range Instruments.Caused by Bdps Not Blocked. Surveillance Revised

LER-1984-018-06, :on 841128,HVAC Outside Air Vent Fan Started During Filter Change.Caused by Monitor Tripping During Filter Change.Procedures Revised So Filter Changes Will Not Cause Radiation Monitors to Trip
type: Subject
label: 05000454/LER-1984-018-06, :on 841128,HVAC Outside Air Vent Fan Started During Filter Change.Caused by Monitor Tripping During Filter Change.Procedures Revised So Filter Changes Will Not Cause Radiation Monitors to Trip
page: https://kanterella.com/05000454/LER-2D1984-2D018-2D06-2C_-3Aon_841128-2CHVAC_Outside_Air_Vent_Fan_Started_During_Filter_Change.Caused_by_Monitor_Tripping_During_Filter_Change.Procedures_Revised_So_Fil…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-018-06, :on 841128,HVAC Outside Air Vent Fan Started During Filter Change.Caused by Monitor Tripping During Filter Change.Procedures Revised So Filter Changes Will Not Cause Radiation Monitors to Trip

LER-1984-021-05, :Between 841127 & 1203,main Control Room Process Radiation Monitors Failed Automatic Check Source Tests,Causing Ventilation Sys to Switch to ESF Mode.Caused by Insufficient Tolerance in Setpoints
type: Subject
label: 05000454/LER-1984-021-05, :Between 841127 & 1203,main Control Room Process Radiation Monitors Failed Automatic Check Source Tests,Causing Ventilation Sys to Switch to ESF Mode.Caused by Insufficient Tolerance in Setpoints
page: https://kanterella.com/05000454/LER-2D1984-2D021-2D05-2C_-3ABetween_841127_-26_1203-2Cmain_Control_Room_Process_Radiation_Monitors_Failed_Automatic_Check_Source_Tests-2CCausing_Ventilation_Sys_to_Swit…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-021-05, :Between 841127 & 1203,main Control Room Process Radiation Monitors Failed Automatic Check Source Tests,Causing Ventilation Sys to Switch to ESF Mode.Caused by Insufficient Tolerance in Setpoints

LER-1985-019, :on 850128,monthly Surveillance of Containment Isolation,Containment Radioactivity,High Radiation Monitors Not Performed at Required Interval.Action Statement of Limiting Condition for Operation Entered
type: Subject
label: 05000454/LER-1985-019, :on 850128,monthly Surveillance of Containment Isolation,Containment Radioactivity,High Radiation Monitors Not Performed at Required Interval.Action Statement of Limiting Condition for Operation Entered
page: https://kanterella.com/05000454/LER-2D1985-2D019-2C_-3Aon_850128-2Cmonthly_Surveillance_of_Containment_Isolation-2CContainment_Radioactivity-2CHigh_Radiation_Monitors_Not_Performed_at_Required_Interva…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-019, :on 850128,monthly Surveillance of Containment Isolation,Containment Radioactivity,High Radiation Monitors Not Performed at Required Interval.Action Statement of Limiting Condition for Operation Entered

05000454/LER-1985-018, :on 850204,fire Protection Detectors Discovered to Be Inconsistent W/Layout Prints & Tech Specs. Caused by Ae Error Due to Oversight.Fire Watch Established & Tech Specs Revised
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D018-2C_-3Aon_850204-2Cfire_Protection_Detectors_Discovered_to_Be_Inconsistent_W/Layout_Prints_-26_Tech_Specs._Caused_by_Ae_Error_Due_to_Oversight.Fire_Watc…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-018, :on 850204,fire Protection Detectors Discovered to Be Inconsistent W/Layout Prints & Tech Specs. Caused by Ae Error Due to Oversight.Fire Watch Established & Tech Specs Revised

LER-1984-019-05, :on 841127,boron Dilution Protection Isolation Sys Actuated.Caused by Noise Spike on Source Range Channels. Westinghouse Requested to Investigate Means of Filtering Out Noise Spikes
type: Subject
label: 05000454/LER-1984-019-05, :on 841127,boron Dilution Protection Isolation Sys Actuated.Caused by Noise Spike on Source Range Channels. Westinghouse Requested to Investigate Means of Filtering Out Noise Spikes
page: https://kanterella.com/05000454/LER-2D1984-2D019-2D05-2C_-3Aon_841127-2Cboron_Dilution_Protection_Isolation_Sys_Actuated.Caused_by_Noise_Spike_on_Source_Range_Channels._Westinghouse_Requested_to_Inves…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-019-05, :on 841127,boron Dilution Protection Isolation Sys Actuated.Caused by Noise Spike on Source Range Channels. Westinghouse Requested to Investigate Means of Filtering Out Noise Spikes

05000454/LER-1985-017, :on 850119,PORV Block Valves Not Deenergized During RCS Leak Test.Caused by Misinterpretation of Tech Spec Limiting Condition for Operation.Personnel Briefed
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D017-2C_-3Aon_850119-2CPORV_Block_Valves_Not_Deenergized_During_RCS_Leak_Test.Caused_by_Misinterpretation_of_Tech_Spec_Limiting_Condition_for_Operation.Pers…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-017, :on 850119,PORV Block Valves Not Deenergized During RCS Leak Test.Caused by Misinterpretation of Tech Spec Limiting Condition for Operation.Personnel Briefed

LER-1985-016, :on 850124,reactor Trip Occurred.Caused by Instrument Mechanic Grounding Strip Chart Recorder Connector Using Incorrect Size for Connectors.Surveillances Performed to Verify Proper Operation of Trains
type: Subject
label: 05000454/LER-1985-016, :on 850124,reactor Trip Occurred.Caused by Instrument Mechanic Grounding Strip Chart Recorder Connector Using Incorrect Size for Connectors.Surveillances Performed to Verify Proper Operation of Trains
page: https://kanterella.com/05000454/LER-2D1985-2D016-2C_-3Aon_850124-2Creactor_Trip_Occurred.Caused_by_Instrument_Mechanic_Grounding_Strip_Chart_Recorder_Connector_Using_Incorrect_Size_for_Connectors.Surv…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-016, :on 850124,reactor Trip Occurred.Caused by Instrument Mechanic Grounding Strip Chart Recorder Connector Using Incorrect Size for Connectors.Surveillances Performed to Verify Proper Operation of Trains

LER-1985-012, :on 850117,Tech Spec Surveillance for Steam Generator Blowdown Containment Isolation Valves Found Past Critical Date Re Valve 1SD005C.Caused by Testing of Improper Valve on 850108.Surveillance Program Modified
type: Subject
label: 05000454/LER-1985-012, :on 850117,Tech Spec Surveillance for Steam Generator Blowdown Containment Isolation Valves Found Past Critical Date Re Valve 1SD005C.Caused by Testing of Improper Valve on 850108.Surveillance Program Modified
page: https://kanterella.com/05000454/LER-2D1985-2D012-2C_-3Aon_850117-2CTech_Spec_Surveillance_for_Steam_Generator_Blowdown_Containment_Isolation_Valves_Found_Past_Critical_Date_Re_Valve_1SD005C.Caused_by_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-012, :on 850117,Tech Spec Surveillance for Steam Generator Blowdown Containment Isolation Valves Found Past Critical Date Re Valve 1SD005C.Caused by Testing of Improper Valve on 850108.Surveillance Program Modified

05000454/LER-1985-015, :on 850131,five Valves Found Outside of Acceptable Lift Setting Range.Caused by Const Activity Adjacent to Safety Valves.Valves Adjusted to Proper Setting
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D015-2C_-3Aon_850131-2Cfive_Valves_Found_Outside_of_Acceptable_Lift_Setting_Range.Caused_by_Const_Activity_Adjacent_to_Safety_Valves.Valves_Adjusted_to_Prop…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-015, :on 850131,five Valves Found Outside of Acceptable Lift Setting Range.Caused by Const Activity Adjacent to Safety Valves.Valves Adjusted to Proper Setting

LER-1985-013, :on 850124,position Indication Test for Valve 1SI8809A Outside of Surveillance Interval.Caused by Omission of Valve from Revised Safety Injection Sys Position Indication Test Surveillance.Procedure Revised
type: Subject
label: 05000454/LER-1985-013, :on 850124,position Indication Test for Valve 1SI8809A Outside of Surveillance Interval.Caused by Omission of Valve from Revised Safety Injection Sys Position Indication Test Surveillance.Procedure Revised
page: https://kanterella.com/05000454/LER-2D1985-2D013-2C_-3Aon_850124-2Cposition_Indication_Test_for_Valve_1SI8809A_Outside_of_Surveillance_Interval.Caused_by_Omission_of_Valve_from_Revised_Safety_Injectio…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-013, :on 850124,position Indication Test for Valve 1SI8809A Outside of Surveillance Interval.Caused by Omission of Valve from Revised Safety Injection Sys Position Indication Test Surveillance.Procedure Revised

05000454/LER-1985-011, :on 850111,both Safety Injection Trains Feeding Cold Injection Isolated.Caused by Personnel Error.Dept Heads Notified of Importance of Procedural Adherence & Changes
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D011-2C_-3Aon_850111-2Cboth_Safety_Injection_Trains_Feeding_Cold_Injection_Isolated.Caused_by_Personnel_Error.Dept_Heads_Notified_of_Importance_of_Procedura…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-011, :on 850111,both Safety Injection Trains Feeding Cold Injection Isolated.Caused by Personnel Error.Dept Heads Notified of Importance of Procedural Adherence & Changes

LER-1985-005, :on 850111,daily Surveillance of Diesel Generator 2A Not Performed.Caused by Personnel Error. Surveillance Performed & Licensed Operators Reminded to Perform Required Surveillances on Schedule
type: Subject
label: 05000454/LER-1985-005, :on 850111,daily Surveillance of Diesel Generator 2A Not Performed.Caused by Personnel Error. Surveillance Performed & Licensed Operators Reminded to Perform Required Surveillances on Schedule
page: https://kanterella.com/05000454/LER-2D1985-2D005-2C_-3Aon_850111-2Cdaily_Surveillance_of_Diesel_Generator_2A_Not_Performed.Caused_by_Personnel_Error._Surveillance_Performed_-26_Licensed_Operators_Remi…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-005, :on 850111,daily Surveillance of Diesel Generator 2A Not Performed.Caused by Personnel Error. Surveillance Performed & Licensed Operators Reminded to Perform Required Surveillances on Schedule

LER-1985-006, :on 850106 & 10,while Venting Containment to Reduce Internal Pressure,Both Containment Mini Purge Supply & Exhaust Lines Opened in Violation of Tech Specs.Caused by Use of Wrong Procedure
type: Subject
label: 05000454/LER-1985-006, :on 850106 & 10,while Venting Containment to Reduce Internal Pressure,Both Containment Mini Purge Supply & Exhaust Lines Opened in Violation of Tech Specs.Caused by Use of Wrong Procedure
page: https://kanterella.com/05000454/LER-2D1985-2D006-2C_-3Aon_850106_-26_10-2Cwhile_Venting_Containment_to_Reduce_Internal_Pressure-2CBoth_Containment_Mini_Purge_Supply_-26_Exhaust_Lines_Opened_in_Violati…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-006, :on 850106 & 10,while Venting Containment to Reduce Internal Pressure,Both Containment Mini Purge Supply & Exhaust Lines Opened in Violation of Tech Specs.Caused by Use of Wrong Procedure

LER-1984-020, :on 841125 & 28,source Range Channel N32 Indicated Noise Spikes on Four Occasions,Resulting in Containment Evacuation Alarms.Cause Under Investigation. Source Range Channel Modified
type: Subject
label: 05000454/LER-1984-020, :on 841125 & 28,source Range Channel N32 Indicated Noise Spikes on Four Occasions,Resulting in Containment Evacuation Alarms.Cause Under Investigation. Source Range Channel Modified
page: https://kanterella.com/05000454/LER-2D1984-2D020-2C_-3Aon_841125_-26_28-2Csource_Range_Channel_N32_Indicated_Noise_Spikes_on_Four_Occasions-2CResulting_in_Containment_Evacuation_Alarms.Cause_Under_Inv…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-020, :on 841125 & 28,source Range Channel N32 Indicated Noise Spikes on Four Occasions,Resulting in Containment Evacuation Alarms.Cause Under Investigation. Source Range Channel Modified

LER-1985-001-02, :on 850103,auxiliary Bldg Vent Stack Monitor Tripped Due to Filter Loading.Caused by Personnel Error. Particulate Filter Collected from Monitor But Not Analyzed as Required to Meet Tech Specs
type: Subject
label: 05000454/LER-1985-001-02, :on 850103,auxiliary Bldg Vent Stack Monitor Tripped Due to Filter Loading.Caused by Personnel Error. Particulate Filter Collected from Monitor But Not Analyzed as Required to Meet Tech Specs
page: https://kanterella.com/05000454/LER-2D1985-2D001-2D02-2C_-3Aon_850103-2Cauxiliary_Bldg_Vent_Stack_Monitor_Tripped_Due_to_Filter_Loading.Caused_by_Personnel_Error._Particulate_Filter_Collected_from_Mon…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-001-02, :on 850103,auxiliary Bldg Vent Stack Monitor Tripped Due to Filter Loading.Caused by Personnel Error. Particulate Filter Collected from Monitor But Not Analyzed as Required to Meet Tech Specs

Technician & at Instrument Dept Meeting
type: Subject
label: 05000454/LER-1985-009, :on 850108,main Steam Line Isolation Caused by Technician Performing Work on Incorrect Steam Pressure Channel.Plant Operation Unaffected.Event Discussed W/ Technician & at Instrument Dept Meeting
page: https://kanterella.com/05000454/LER-2D1985-2D009-2C_-3Aon_850108-2Cmain_Steam_Line_Isolation_Caused_by_Technician_Performing_Work_on_Incorrect_Steam_Pressure_Channel.Plant_Operation_Unaffected.Event_D…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-009, :on 850108,main Steam Line Isolation Caused by Technician Performing Work on Incorrect Steam Pressure Channel.Plant Operation Unaffected.Event Discussed W/ Technician & at Instrument Dept Meeting

LER-1985-008, :on 850104,reactor Trip & Auxiliary Feedwater Actuation Occurred Due to Steam Generator lo-lo Alarm. Operators Inadvertently Allowed Level to Drop in Steam Generator While Engaged in Shift Turnover
type: Subject
label: 05000454/LER-1985-008, :on 850104,reactor Trip & Auxiliary Feedwater Actuation Occurred Due to Steam Generator lo-lo Alarm. Operators Inadvertently Allowed Level to Drop in Steam Generator While Engaged in Shift Turnover
page: https://kanterella.com/05000454/LER-2D1985-2D008-2C_-3Aon_850104-2Creactor_Trip_-26_Auxiliary_Feedwater_Actuation_Occurred_Due_to_Steam_Generator_lo-2Dlo_Alarm._Operators_Inadvertently_Allowed_Level_t…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-008, :on 850104,reactor Trip & Auxiliary Feedwater Actuation Occurred Due to Steam Generator lo-lo Alarm. Operators Inadvertently Allowed Level to Drop in Steam Generator While Engaged in Shift Turnover

05000454/LER-1984-003-01, :on 841107,signal Spiking Seen on Both Source Range Channels.Caused by Electrical Noise Generated by or Induced Onto Sys.Source Range Channel Modified & Cleaned
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D003-2D01-2C_-3Aon_841107-2Csignal_Spiking_Seen_on_Both_Source_Range_Channels.Caused_by_Electrical_Noise_Generated_by_or_Induced_Onto_Sys.Source_Range_Chann…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-003-01, :on 841107,signal Spiking Seen on Both Source Range Channels.Caused by Electrical Noise Generated by or Induced Onto Sys.Source Range Channel Modified & Cleaned

LER-1984-040-02, :on 841225,reactor Trip Breakers Manually Opened Due to Greater than 12-step Difference Between Digital Rod Position Indication & Demand Step Counters. Caused by Stuck Step Counter
type: Subject
label: 05000454/LER-1984-040-02, :on 841225,reactor Trip Breakers Manually Opened Due to Greater than 12-step Difference Between Digital Rod Position Indication & Demand Step Counters. Caused by Stuck Step Counter
page: https://kanterella.com/05000454/LER-2D1984-2D040-2D02-2C_-3Aon_841225-2Creactor_Trip_Breakers_Manually_Opened_Due_to_Greater_than_12-2Dstep_Difference_Between_Digital_Rod_Position_Indication_-26_Deman…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-040-02, :on 841225,reactor Trip Breakers Manually Opened Due to Greater than 12-step Difference Between Digital Rod Position Indication & Demand Step Counters. Caused by Stuck Step Counter

LER-1984-039-03, :on 841225,radiation Monitor OPR33J Loss of Sample Flow Alarm Caused Control Room Ventilation Sys to Switch to Makeup Mode.Caused by Operator Prematurely Stopping Ventilation Purge.Operator Counseled
type: Subject
label: 05000454/LER-1984-039-03, :on 841225,radiation Monitor OPR33J Loss of Sample Flow Alarm Caused Control Room Ventilation Sys to Switch to Makeup Mode.Caused by Operator Prematurely Stopping Ventilation Purge.Operator Counseled
page: https://kanterella.com/05000454/LER-2D1984-2D039-2D03-2C_-3Aon_841225-2Cradiation_Monitor_OPR33J_Loss_of_Sample_Flow_Alarm_Caused_Control_Room_Ventilation_Sys_to_Switch_to_Makeup_Mode.Caused_by_Operat…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-039-03, :on 841225,radiation Monitor OPR33J Loss of Sample Flow Alarm Caused Control Room Ventilation Sys to Switch to Makeup Mode.Caused by Operator Prematurely Stopping Ventilation Purge.Operator Counseled

LER-1985-004, :on 850102,during Mode 5,component Cooling Sys Surge Tank Level Rapidly Decreased Due to Const Personnel Unbolting RHR Sys HX Flange.Caused by Improper Review of out-of-svc Procedures
type: Subject
label: 05000454/LER-1985-004, :on 850102,during Mode 5,component Cooling Sys Surge Tank Level Rapidly Decreased Due to Const Personnel Unbolting RHR Sys HX Flange.Caused by Improper Review of out-of-svc Procedures
page: https://kanterella.com/05000454/LER-2D1985-2D004-2C_-3Aon_850102-2Cduring_Mode_5-2Ccomponent_Cooling_Sys_Surge_Tank_Level_Rapidly_Decreased_Due_to_Const_Personnel_Unbolting_RHR_Sys_HX_Flange.Caused_by…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-004, :on 850102,during Mode 5,component Cooling Sys Surge Tank Level Rapidly Decreased Due to Const Personnel Unbolting RHR Sys HX Flange.Caused by Improper Review of out-of-svc Procedures

LER-1984-021-02, :on 841127,main Control Room Ventilation Sys Switched to ESF Mode.Caused by Main Control Room Process Radiation Monitors Failing Automatic Check Source Tests Due to Insufficient Tolerance in Check Setpoints
type: Subject
label: 05000454/LER-1984-021-02, :on 841127,main Control Room Ventilation Sys Switched to ESF Mode.Caused by Main Control Room Process Radiation Monitors Failing Automatic Check Source Tests Due to Insufficient Tolerance in Check Setpoints
page: https://kanterella.com/05000454/LER-2D1984-2D021-2D02-2C_-3Aon_841127-2Cmain_Control_Room_Ventilation_Sys_Switched_to_ESF_Mode.Caused_by_Main_Control_Room_Process_Radiation_Monitors_Failing_Automatic_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-021-02, :on 841127,main Control Room Ventilation Sys Switched to ESF Mode.Caused by Main Control Room Process Radiation Monitors Failing Automatic Check Source Tests Due to Insufficient Tolerance in Check Setpoints

05000454/LER-1985-003-01, :on 850111 & 12,reserve Offsite Transmission Circuits Unavailable & Periodic Surveillance of Remaining Circuits Not Performed.Caused by Personnel Error
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D003-2D01-2C_-3Aon_850111_-26_12-2Creserve_Offsite_Transmission_Circuits_Unavailable_-26_Periodic_Surveillance_of_Remaining_Circuits_Not_Performed.Caused_by…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-003-01, :on 850111 & 12,reserve Offsite Transmission Circuits Unavailable & Periodic Surveillance of Remaining Circuits Not Performed.Caused by Personnel Error

LER-1984-038-03, :on 841231,control Room Ventilation Sys Switched to make-up Mode of Operation.Caused by Spurious High Radiation & Interlock Alarm on Radiation Monitor OPR34J.Noise Suppression Devices Installed
type: Subject
label: 05000454/LER-1984-038-03, :on 841231,control Room Ventilation Sys Switched to make-up Mode of Operation.Caused by Spurious High Radiation & Interlock Alarm on Radiation Monitor OPR34J.Noise Suppression Devices Installed
page: https://kanterella.com/05000454/LER-2D1984-2D038-2D03-2C_-3Aon_841231-2Ccontrol_Room_Ventilation_Sys_Switched_to_make-2Dup_Mode_of_Operation.Caused_by_Spurious_High_Radiation_-26_Interlock_Alarm_on_Ra…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-038-03, :on 841231,control Room Ventilation Sys Switched to make-up Mode of Operation.Caused by Spurious High Radiation & Interlock Alarm on Radiation Monitor OPR34J.Noise Suppression Devices Installed

O Automatic Start Input Signals.Caused by Bumped Control Switch.Guardrails Installed to Prevent Inadvertent Starts
type: Subject
label: 05000454/LER-1984-035-03, :on 841226,control Room Ventilation Train B Makeup Air Filter Unit Fan Started W/O Automatic Start Input Signals.Caused by Bumped Control Switch.Guardrails Installed to Prevent Inadvertent Starts
page: https://kanterella.com/05000454/LER-2D1984-2D035-2D03-2C_-3Aon_841226-2Ccontrol_Room_Ventilation_Train_B_Makeup_Air_Filter_Unit_Fan_Started_W/O_Automatic_Start_Input_Signals.Caused_by_Bumped_Control_S…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-035-03, :on 841226,control Room Ventilation Train B Makeup Air Filter Unit Fan Started W/O Automatic Start Input Signals.Caused by Bumped Control Switch.Guardrails Installed to Prevent Inadvertent Starts

LER-1985-002, :on 850109,gas Monitor Channels on Radiation Monitor OPR33J Went Into High Radiation.Caused by Externally Generated Electrical Noise.Source of Noise Spike Unknown. Investigation Underway
type: Subject
label: 05000454/LER-1985-002, :on 850109,gas Monitor Channels on Radiation Monitor OPR33J Went Into High Radiation.Caused by Externally Generated Electrical Noise.Source of Noise Spike Unknown. Investigation Underway
page: https://kanterella.com/05000454/LER-2D1985-2D002-2C_-3Aon_850109-2Cgas_Monitor_Channels_on_Radiation_Monitor_OPR33J_Went_Into_High_Radiation.Caused_by_Externally_Generated_Electrical_Noise.Source_of_N…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-002, :on 850109,gas Monitor Channels on Radiation Monitor OPR33J Went Into High Radiation.Caused by Externally Generated Electrical Noise.Source of Noise Spike Unknown. Investigation Underway

Centrifugal Charging Pump 1B Operable.Caused by Personnel Error.Personnel Involved Reminded to Verify Plant Status When Making Equipment Inoperable
type: Subject
label: 05000454/LER-1984-036-03, :on 841226,diesel Generator 1B Inoperable W/ Centrifugal Charging Pump 1B Operable.Caused by Personnel Error.Personnel Involved Reminded to Verify Plant Status When Making Equipment Inoperable
page: https://kanterella.com/05000454/LER-2D1984-2D036-2D03-2C_-3Aon_841226-2Cdiesel_Generator_1B_Inoperable_W/_Centrifugal_Charging_Pump_1B_Operable.Caused_by_Personnel_Error.Personnel_Involved_Reminded_to…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-036-03, :on 841226,diesel Generator 1B Inoperable W/ Centrifugal Charging Pump 1B Operable.Caused by Personnel Error.Personnel Involved Reminded to Verify Plant Status When Making Equipment Inoperable

LER-1984-013-06, :on 841128,during Surveillance Testing,Fuel Oil Level Reduced to 93.5-,below Tech Spec 93.8- Limit. Caused by Running Diesel Generator for 64 Minutes.Storage Tanks Refilled & Procedures Revised
type: Subject
label: 05000454/LER-1984-013-06, :on 841128,during Surveillance Testing,Fuel Oil Level Reduced to 93.5%,below Tech Spec 93.8% Limit. Caused by Running Diesel Generator for 64 Minutes.Storage Tanks Refilled & Procedures Revised
page: https://kanterella.com/05000454/LER-2D1984-2D013-2D06-2C_-3Aon_841128-2Cduring_Surveillance_Testing-2CFuel_Oil_Level_Reduced_to_93.5--2Cbelow_Tech_Spec_93.8-_Limit._Caused_by_Running_Diesel_Generator_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-013-06, :on 841128,during Surveillance Testing,Fuel Oil Level Reduced to 93.5%,below Tech Spec 93.8% Limit. Caused by Running Diesel Generator for 64 Minutes.Storage Tanks Refilled & Procedures Revised

LER-1984-020-06, :on 841125 & 30,while in Mode 5,containment Evacuation Alarm Occurred.Caused by Source Range Channel N32 Noise Spikes.Work Underway to Suppress or Eliminate Source Range Noise Spikes
type: Subject
label: 05000454/LER-1984-020-06, :on 841125 & 30,while in Mode 5,containment Evacuation Alarm Occurred.Caused by Source Range Channel N32 Noise Spikes.Work Underway to Suppress or Eliminate Source Range Noise Spikes
page: https://kanterella.com/05000454/LER-2D1984-2D020-2D06-2C_-3Aon_841125_-26_30-2Cwhile_in_Mode_5-2Ccontainment_Evacuation_Alarm_Occurred.Caused_by_Source_Range_Channel_N32_Noise_Spikes.Work_Underway_to_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-020-06, :on 841125 & 30,while in Mode 5,containment Evacuation Alarm Occurred.Caused by Source Range Channel N32 Noise Spikes.Work Underway to Suppress or Eliminate Source Range Noise Spikes

LER-1984-017-07, :on 841123,train a Safety Injection (SI) Actuated.Caused by Operator Placing Main Control Board Safety Injection Switch in Incorrect Position.Addl Training Re Protection Sys Initiated
type: Subject
label: 05000454/LER-1984-017-07, :on 841123,train a Safety Injection (SI) Actuated.Caused by Operator Placing Main Control Board Safety Injection Switch in Incorrect Position.Addl Training Re Protection Sys Initiated
page: https://kanterella.com/05000454/LER-2D1984-2D017-2D07-2C_-3Aon_841123-2Ctrain_a_Safety_Injection_-28SI-29_Actuated.Caused_by_Operator_Placing_Main_Control_Board_Safety_Injection_Switch_in_Incorrect_Po…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-017-07, :on 841123,train a Safety Injection (SI) Actuated.Caused by Operator Placing Main Control Board Safety Injection Switch in Incorrect Position.Addl Training Re Protection Sys Initiated

LER-1984-015-07, :on 841125,auxiliary Bldg Vent Stack Monitor Inoperable & Gas Grab Sample Missed.Caused by Personnel Error.Control Room Personnel & rad-chem Foremen Required to Verify Action Prior to Sampling Termination
type: Subject
label: 05000454/LER-1984-015-07, :on 841125,auxiliary Bldg Vent Stack Monitor Inoperable & Gas Grab Sample Missed.Caused by Personnel Error.Control Room Personnel & rad-chem Foremen Required to Verify Action Prior to Sampling Termination
page: https://kanterella.com/05000454/LER-2D1984-2D015-2D07-2C_-3Aon_841125-2Cauxiliary_Bldg_Vent_Stack_Monitor_Inoperable_-26_Gas_Grab_Sample_Missed.Caused_by_Personnel_Error.Control_Room_Personnel_-26_rad…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-015-07, :on 841125,auxiliary Bldg Vent Stack Monitor Inoperable & Gas Grab Sample Missed.Caused by Personnel Error.Control Room Personnel & rad-chem Foremen Required to Verify Action Prior to Sampling Termination

05000454/LER-1984-014-06, :on 841121,12 H Grab Samples from Process Monitors Not Obtained Per Tech Specs.Caused by Personnel Error.Tighter Administrative Controls Implemented
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D014-2D06-2C_-3Aon_841121-2C12_H_Grab_Samples_from_Process_Monitors_Not_Obtained_Per_Tech_Specs.Caused_by_Personnel_Error.Tighter_Administrative_Controls_Im…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-014-06, :on 841121,12 H Grab Samples from Process Monitors Not Obtained Per Tech Specs.Caused by Personnel Error.Tighter Administrative Controls Implemented

LER-1984-016-06, :on 841121,during insp,125-volt 1E Batteries Declared Inoperable.Caused by Battery to Rack Spacing Exceeding Manufacturer Physical Seismic Test Parameter Limit.Spacers Added to Gap
type: Subject
label: 05000454/LER-1984-016-06, :on 841121,during insp,125-volt 1E Batteries Declared Inoperable.Caused by Battery to Rack Spacing Exceeding Manufacturer Physical Seismic Test Parameter Limit.Spacers Added to Gap
page: https://kanterella.com/05000454/LER-2D1984-2D016-2D06-2C_-3Aon_841121-2Cduring_insp-2C125-2Dvolt_1E_Batteries_Declared_Inoperable.Caused_by_Battery_to_Rack_Spacing_Exceeding_Manufacturer_Physical_Seis…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-016-06, :on 841121,during insp,125-volt 1E Batteries Declared Inoperable.Caused by Battery to Rack Spacing Exceeding Manufacturer Physical Seismic Test Parameter Limit.Spacers Added to Gap

LER-1984-008-07, :on 841115,fire Watch in Diesel Storage Tank Rooms Terminated Before Fire Protection Foam Sys Reestablished.Caused by Poor Communication.Fire Watch Established & Sys Returned to Svc
type: Subject
label: 05000454/LER-1984-008-07, :on 841115,fire Watch in Diesel Storage Tank Rooms Terminated Before Fire Protection Foam Sys Reestablished.Caused by Poor Communication.Fire Watch Established & Sys Returned to Svc
page: https://kanterella.com/05000454/LER-2D1984-2D008-2D07-2C_-3Aon_841115-2Cfire_Watch_in_Diesel_Storage_Tank_Rooms_Terminated_Before_Fire_Protection_Foam_Sys_Reestablished.Caused_by_Poor_Communication.Fi…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-008-07, :on 841115,fire Watch in Diesel Storage Tank Rooms Terminated Before Fire Protection Foam Sys Reestablished.Caused by Poor Communication.Fire Watch Established & Sys Returned to Svc

05000454/LER-1984-010-08, :on 841112,boron Dilution Protection Sys Actuated.Caused by Noise Spike Due to Pulling Fuse.Mod to Boron Dilution Protection Sys Being Designed
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D010-2D08-2C_-3Aon_841112-2Cboron_Dilution_Protection_Sys_Actuated.Caused_by_Noise_Spike_Due_to_Pulling_Fuse.Mod_to_Boron_Dilution_Protection_Sys_Being_Desi…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-010-08, :on 841112,boron Dilution Protection Sys Actuated.Caused by Noise Spike Due to Pulling Fuse.Mod to Boron Dilution Protection Sys Being Designed

05000454/LER-1984-004-08, :on 841108,process Radiation Monitor ORE-PR031B for Oa Control Room HVAC Outside Air Intake Failed.Train Ob Started
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D004-2D08-2C_-3Aon_841108-2Cprocess_Radiation_Monitor_ORE-2DPR031B_for_Oa_Control_Room_HVAC_Outside_Air_Intake_Failed.Train_Ob_Started
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-004-08, :on 841108,process Radiation Monitor ORE-PR031B for Oa Control Room HVAC Outside Air Intake Failed.Train Ob Started

LER-1984-009-08, :on 841116,auxiliary Bldg Vent Stack Monitor 1RE-PR028 Tripped Due to Filter Loading.Particulate Filter & Iodine Cartridge Not Analyzed within 48 H Because of Lack of Instructions from Lab Foreman to Technician
type: Subject
label: 05000454/LER-1984-009-08, :on 841116,auxiliary Bldg Vent Stack Monitor 1RE-PR028 Tripped Due to Filter Loading.Particulate Filter & Iodine Cartridge Not Analyzed within 48 H Because of Lack of Instructions from Lab Foreman to Technician
page: https://kanterella.com/05000454/LER-2D1984-2D009-2D08-2C_-3Aon_841116-2Cauxiliary_Bldg_Vent_Stack_Monitor_1RE-2DPR028_Tripped_Due_to_Filter_Loading.Particulate_Filter_-26_Iodine_Cartridge_Not_Analyzed…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-009-08, :on 841116,auxiliary Bldg Vent Stack Monitor 1RE-PR028 Tripped Due to Filter Loading.Particulate Filter & Iodine Cartridge Not Analyzed within 48 H Because of Lack of Instructions from Lab Foreman to Technician

Radiation Monitor OPR31J Lost in Control Room.Caused by Two Terminals Accidentally Shorting During Repairs.Work Request Written & Damaged Components Replaced
type: Subject
label: 05000454/LER-1984-011-06, :on 841108,all Communications W/Radiation Monitor OPR31J Lost in Control Room.Caused by Two Terminals Accidentally Shorting During Repairs.Work Request Written & Damaged Components Replaced
page: https://kanterella.com/05000454/LER-2D1984-2D011-2D06-2C_-3Aon_841108-2Call_Communications_W/Radiation_Monitor_OPR31J_Lost_in_Control_Room.Caused_by_Two_Terminals_Accidentally_Shorting_During_Repairs.…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-011-06, :on 841108,all Communications W/Radiation Monitor OPR31J Lost in Control Room.Caused by Two Terminals Accidentally Shorting During Repairs.Work Request Written & Damaged Components Replaced

LER-1984-006-07, :on 841109,control Room HVAC Sys Unable to Maintain Positive Pressure.Caused by Operation of Auxiliary Bldg HVAC in Abnormal Lineup.Auxiliary Bldg HVAC Sys Restored to Normal Lineup
type: Subject
label: 05000454/LER-1984-006-07, :on 841109,control Room HVAC Sys Unable to Maintain Positive Pressure.Caused by Operation of Auxiliary Bldg HVAC in Abnormal Lineup.Auxiliary Bldg HVAC Sys Restored to Normal Lineup
page: https://kanterella.com/05000454/LER-2D1984-2D006-2D07-2C_-3Aon_841109-2Ccontrol_Room_HVAC_Sys_Unable_to_Maintain_Positive_Pressure.Caused_by_Operation_of_Auxiliary_Bldg_HVAC_in_Abnormal_Lineup.Auxilia…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-006-07, :on 841109,control Room HVAC Sys Unable to Maintain Positive Pressure.Caused by Operation of Auxiliary Bldg HVAC in Abnormal Lineup.Auxiliary Bldg HVAC Sys Restored to Normal Lineup

05000454/LER-1984-001-08, :on 841104,hourly Fire Watch Patrol Not Executed in Areas W/Degraded Fire Barriers.Addl Instruction Re Staffing for Fire Watches Provided to Security Supervisors
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D001-2D08-2C_-3Aon_841104-2Chourly_Fire_Watch_Patrol_Not_Executed_in_Areas_W/Degraded_Fire_Barriers.Addl_Instruction_Re_Staffing_for_Fire_Watches_Provided_t…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-001-08, :on 841104,hourly Fire Watch Patrol Not Executed in Areas W/Degraded Fire Barriers.Addl Instruction Re Staffing for Fire Watches Provided to Security Supervisors

05000454/LER-1984-007-08, :on 841110,11 & 12,grab Samples Not Taken. Caused by Personnel Error.Personnel Counseled on Importance of Taking Samples as Required by Tech Specs
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D007-2D08-2C_-3Aon_841110-2C11_-26_12-2Cgrab_Samples_Not_Taken._Caused_by_Personnel_Error.Personnel_Counseled_on_Importance_of_Taking_Samples_as_Required_by…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-007-08, :on 841110,11 & 12,grab Samples Not Taken. Caused by Personnel Error.Personnel Counseled on Importance of Taking Samples as Required by Tech Specs

LER-1985-030, :on 850313,during up-power Maneuver to 10-, Steam Generator narrow-range Level Decreased to 4- Above lo-lo Setpoint.Caused by Low Feedwater Suction Pressure.Automatic Bypass Mod in Progress
type: Subject
label: 05000454/LER-1985-030, :on 850313,during up-power Maneuver to 10%, Steam Generator narrow-range Level Decreased to 4% Above lo-lo Setpoint.Caused by Low Feedwater Suction Pressure.Automatic Bypass Mod in Progress
page: https://kanterella.com/05000454/LER-2D1985-2D030-2C_-3Aon_850313-2Cduring_up-2Dpower_Maneuver_to_10--2C_Steam_Generator_narrow-2Drange_Level_Decreased_to_4-_Above_lo-2Dlo_Setpoint.Caused_by_Low_Feedwa…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-030, :on 850313,during up-power Maneuver to 10%, Steam Generator narrow-range Level Decreased to 4% Above lo-lo Setpoint.Caused by Low Feedwater Suction Pressure.Automatic Bypass Mod in Progress

05000454/LER-1985-031, :on 850308,reactor Trip Occurred Due to Steam Generator 1B lo-2 Level.Caused by Trip of Feedwater Pump 1B During Investigation of Lube Oil Problem.Instruments Recalibr
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D031-2C_-3Aon_850308-2Creactor_Trip_Occurred_Due_to_Steam_Generator_1B_lo-2D2_Level.Caused_by_Trip_of_Feedwater_Pump_1B_During_Investigation_of_Lube_Oil_Pro…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-031, :on 850308,reactor Trip Occurred Due to Steam Generator 1B lo-2 Level.Caused by Trip of Feedwater Pump 1B During Investigation of Lube Oil Problem.Instruments Recalibr

LER-1984-002-08, :on 841106,surveillance Requirements Not Performed to Record RHR Train Flow & Operability.Caused by Operator Oversight & Improper Review by Shift Supervisory Personnel.Personnel Cautioned
type: Subject
label: 05000454/LER-1984-002-08, :on 841106,surveillance Requirements Not Performed to Record RHR Train Flow & Operability.Caused by Operator Oversight & Improper Review by Shift Supervisory Personnel.Personnel Cautioned
page: https://kanterella.com/05000454/LER-2D1984-2D002-2D08-2C_-3Aon_841106-2Csurveillance_Requirements_Not_Performed_to_Record_RHR_Train_Flow_-26_Operability.Caused_by_Operator_Oversight_-26_Improper_Revie…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-002-08, :on 841106,surveillance Requirements Not Performed to Record RHR Train Flow & Operability.Caused by Operator Oversight & Improper Review by Shift Supervisory Personnel.Personnel Cautioned

LER-1985-029, :on 850305,reactor Trip Occurred Due to Trouble Shooting by Instrument Maint Personnel.Caused by Personnel Error.Training Class for Technicians Re Reactor Trip Logic Will Be Conducted
type: Subject
label: 05000454/LER-1985-029, :on 850305,reactor Trip Occurred Due to Trouble Shooting by Instrument Maint Personnel.Caused by Personnel Error.Training Class for Technicians Re Reactor Trip Logic Will Be Conducted
page: https://kanterella.com/05000454/LER-2D1985-2D029-2C_-3Aon_850305-2Creactor_Trip_Occurred_Due_to_Trouble_Shooting_by_Instrument_Maint_Personnel.Caused_by_Personnel_Error.Training_Class_for_Technicians_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-029, :on 850305,reactor Trip Occurred Due to Trouble Shooting by Instrument Maint Personnel.Caused by Personnel Error.Training Class for Technicians Re Reactor Trip Logic Will Be Conducted

LER-1984-003-08, :on 841107,during Initial Core Loading,Signal Spiking Seen on Both Source Range Channels.Source Range Channels Declared Inoperable.Caused by Electrical Noise on Sys or Induced Onto Sys.Fix Being Investigated
type: Subject
label: 05000454/LER-1984-003-08, :on 841107,during Initial Core Loading,Signal Spiking Seen on Both Source Range Channels.Source Range Channels Declared Inoperable.Caused by Electrical Noise on Sys or Induced Onto Sys.Fix Being Investigated
page: https://kanterella.com/05000454/LER-2D1984-2D003-2D08-2C_-3Aon_841107-2Cduring_Initial_Core_Loading-2CSignal_Spiking_Seen_on_Both_Source_Range_Channels.Source_Range_Channels_Declared_Inoperable.Caused…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-003-08, :on 841107,during Initial Core Loading,Signal Spiking Seen on Both Source Range Channels.Source Range Channels Declared Inoperable.Caused by Electrical Noise on Sys or Induced Onto Sys.Fix Being Investigated

reactor Trip Occurred.Caused by Inability of Turbine electro-hydraulic Controller to Properly Position Governor Valves to Pick Up Generator Load. Load Vs Valve Position Curve Revised
type: Subject
label: 05000454/LER-1985-024, :on 850301,turbine/reactor Trip Occurred.Caused by Inability of Turbine electro-hydraulic Controller to Properly Position Governor Valves to Pick Up Generator Load. Load Vs Valve Position Curve Revised
page: https://kanterella.com/05000454/LER-2D1985-2D024-2C_-3Aon_850301-2Cturbine/reactor_Trip_Occurred.Caused_by_Inability_of_Turbine_electro-2Dhydraulic_Controller_to_Properly_Position_Governor_Valves_to_P…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-024, :on 850301,turbine/reactor Trip Occurred.Caused by Inability of Turbine electro-hydraulic Controller to Properly Position Governor Valves to Pick Up Generator Load. Load Vs Valve Position Curve Revised

LER-1985-022-01, :on 850218,reactor Trip Occurred Due to High Positive Rate on Power Range ex-core Neutron Detector. Caused by Lower Detector on One Channel Failing & Other Channel Being Out of Svc for Testing
type: Subject
label: 05000454/LER-1985-022-01, :on 850218,reactor Trip Occurred Due to High Positive Rate on Power Range ex-core Neutron Detector. Caused by Lower Detector on One Channel Failing & Other Channel Being Out of Svc for Testing
page: https://kanterella.com/05000454/LER-2D1985-2D022-2D01-2C_-3Aon_850218-2Creactor_Trip_Occurred_Due_to_High_Positive_Rate_on_Power_Range_ex-2Dcore_Neutron_Detector._Caused_by_Lower_Detector_on_One_Chann…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-022-01, :on 850218,reactor Trip Occurred Due to High Positive Rate on Power Range ex-core Neutron Detector. Caused by Lower Detector on One Channel Failing & Other Channel Being Out of Svc for Testing

Proper Restoration After Maint
type: Subject
label: 05000454/LER-1985-026, :on 850228,radiation Monitor 1PR11J Left Isolated from Containment Atmosphere After Maint Activity on Valve 1PR001B.Administrative Controls Implemented to Ensure Sys Integrity/Proper Restoration After Maint
page: https://kanterella.com/05000454/LER-2D1985-2D026-2C_-3Aon_850228-2Cradiation_Monitor_1PR11J_Left_Isolated_from_Containment_Atmosphere_After_Maint_Activity_on_Valve_1PR001B.Administrative_Controls_Impl…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-026, :on 850228,radiation Monitor 1PR11J Left Isolated from Containment Atmosphere After Maint Activity on Valve 1PR001B.Administrative Controls Implemented to Ensure Sys Integrity/Proper Restoration After Maint

LER-1984-041-01, :on 841031,ultraviolet Detector in Zone 38 Failed to Annunciate & Fire Catch Not Initiated Until 841212.Caused by Inoperability of Detector.Replaced Detector Not Proven Operable
type: Subject
label: 05000454/LER-1984-041-01, :on 841031,ultraviolet Detector in Zone 38 Failed to Annunciate & Fire Catch Not Initiated Until 841212.Caused by Inoperability of Detector.Replaced Detector Not Proven Operable
page: https://kanterella.com/05000454/LER-2D1984-2D041-2D01-2C_-3Aon_841031-2Cultraviolet_Detector_in_Zone_38_Failed_to_Annunciate_-26_Fire_Catch_Not_Initiated_Until_841212.Caused_by_Inoperability_of_Detect…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-041-01, :on 841031,ultraviolet Detector in Zone 38 Failed to Annunciate & Fire Catch Not Initiated Until 841212.Caused by Inoperability of Detector.Replaced Detector Not Proven Operable

05000454/LER-1985-021-01, :on 850217,security Computer Failed,Preventing Hourly Fire Watch.Cause Unknown.Key Will Be Issued to Fire Watch Personnel When Computer Access Cannot Be Obtained
type: Subject
page: https://kanterella.com/05000454/LER-2D1985-2D021-2D01-2C_-3Aon_850217-2Csecurity_Computer_Failed-2CPreventing_Hourly_Fire_Watch.Cause_Unknown.Key_Will_Be_Issued_to_Fire_Watch_Personnel_When_Computer_A…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-021-01, :on 850217,security Computer Failed,Preventing Hourly Fire Watch.Cause Unknown.Key Will Be Issued to Fire Watch Personnel When Computer Access Cannot Be Obtained

LER-1985-020-01, :on 850215,spurious Safety Injection Actuation Occurred.Caused by Maint on Pressure Channel & Spurious Trip of Second Pressure Channel Believed to Be Caused by Radio. Radios No Longer Allowed within Containment
type: Subject
label: 05000454/LER-1985-020-01, :on 850215,spurious Safety Injection Actuation Occurred.Caused by Maint on Pressure Channel & Spurious Trip of Second Pressure Channel Believed to Be Caused by Radio. Radios No Longer Allowed within Containment
page: https://kanterella.com/05000454/LER-2D1985-2D020-2D01-2C_-3Aon_850215-2Cspurious_Safety_Injection_Actuation_Occurred.Caused_by_Maint_on_Pressure_Channel_-26_Spurious_Trip_of_Second_Pressure_Channel_Be…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1985-020-01, :on 850215,spurious Safety Injection Actuation Occurred.Caused by Maint on Pressure Channel & Spurious Trip of Second Pressure Channel Believed to Be Caused by Radio. Radios No Longer Allowed within Containment

LER-1990-008-06, :on 900608,reactor Trip Occurred Due to High Flux Rate Signal from Power Range Nuclear Instrumentation. Caused by Voltage Transient,Resulting from Lightning Striking Containment.Power Supply Reset
type: Subject
label: 05000456/LER-1990-008-06, :on 900608,reactor Trip Occurred Due to High Flux Rate Signal from Power Range Nuclear Instrumentation. Caused by Voltage Transient,Resulting from Lightning Striking Containment.Power Supply Reset
page: https://kanterella.com/05000456/LER-2D1990-2D008-2D06-2C_-3Aon_900608-2Creactor_Trip_Occurred_Due_to_High_Flux_Rate_Signal_from_Power_Range_Nuclear_Instrumentation._Caused_by_Voltage_Transient-2CResul…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1990-008-06, :on 900608,reactor Trip Occurred Due to High Flux Rate Signal from Power Range Nuclear Instrumentation. Caused by Voltage Transient,Resulting from Lightning Striking Containment.Power Supply Reset

LER-1990-009-04, :on 900604,pressures for Active & Standby Accumulators Identified to Be Below 4,800 Psig Required for Operability.Caused by Component Failure.Four Way Valve & Hydraulic Oil Filter Used for MSIV Replaced
type: Subject
label: 05000457/LER-1990-009-04, :on 900604,pressures for Active & Standby Accumulators Identified to Be Below 4,800 Psig Required for Operability.Caused by Component Failure.Four Way Valve & Hydraulic Oil Filter Used for MSIV Replaced
page: https://kanterella.com/05000457/LER-2D1990-2D009-2D04-2C_-3Aon_900604-2Cpressures_for_Active_-26_Standby_Accumulators_Identified_to_Be_Below_4-2C800_Psig_Required_for_Operability.Caused_by_Component_F…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-009-04, :on 900604,pressures for Active & Standby Accumulators Identified to Be Below 4,800 Psig Required for Operability.Caused by Component Failure.Four Way Valve & Hydraulic Oil Filter Used for MSIV Replaced

LER-1990-005-09, :on 900426,discovered That Diesel Generator 2A Starting Air Distribution Sys Tubing Crisscrossed to Cylinders 6L & 9L.Caused by Preservice Mfg Deficiency. Custom-routed Airlines Replaced
type: Subject
label: 05000457/LER-1990-005-09, :on 900426,discovered That Diesel Generator 2A Starting Air Distribution Sys Tubing Crisscrossed to Cylinders 6L & 9L.Caused by Preservice Mfg Deficiency. Custom-routed Airlines Replaced
page: https://kanterella.com/05000457/LER-2D1990-2D005-2D09-2C_-3Aon_900426-2Cdiscovered_That_Diesel_Generator_2A_Starting_Air_Distribution_Sys_Tubing_Crisscrossed_to_Cylinders_6L_-26_9L.Caused_by_Preservic…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-005-09, :on 900426,discovered That Diesel Generator 2A Starting Air Distribution Sys Tubing Crisscrossed to Cylinders 6L & 9L.Caused by Preservice Mfg Deficiency. Custom-routed Airlines Replaced

05000457/LER-1990-005-08, :on 900416,diesel Generator 2A Speed Oscillations Occurred Due to Defective Resistor.Caused by Failure of One Dropping Resistor in Governor Unit.Resistors Replaced
type: Subject
page: https://kanterella.com/05000457/LER-2D1990-2D005-2D08-2C_-3Aon_900416-2Cdiesel_Generator_2A_Speed_Oscillations_Occurred_Due_to_Defective_Resistor.Caused_by_Failure_of_One_Dropping_Resistor_in_Governor…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-005-08, :on 900416,diesel Generator 2A Speed Oscillations Occurred Due to Defective Resistor.Caused by Failure of One Dropping Resistor in Governor Unit.Resistors Replaced

05000457/LER-1990-006-09, :on 900521,containment Fuel Handling Incident Area Radiation Monitor Failed Automatic Checksource Test Due to Low Count Rate.Caused by Component Failure.Detector Replaced
type: Subject
page: https://kanterella.com/05000457/LER-2D1990-2D006-2D09-2C_-3Aon_900521-2Ccontainment_Fuel_Handling_Incident_Area_Radiation_Monitor_Failed_Automatic_Checksource_Test_Due_to_Low_Count_Rate.Caused_by_Comp…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-006-09, :on 900521,containment Fuel Handling Incident Area Radiation Monitor Failed Automatic Checksource Test Due to Low Count Rate.Caused by Component Failure.Detector Replaced

LER-1990-008-03, :on 900517,unit at Power Permissive Circuit Actuated on Train a of Solid State Protection Sys.Caused by Procedural Deficiency in That Switch Rotation Not Specified. Procedure Revised
type: Subject
label: 05000457/LER-1990-008-03, :on 900517,unit at Power Permissive Circuit Actuated on Train a of Solid State Protection Sys.Caused by Procedural Deficiency in That Switch Rotation Not Specified. Procedure Revised
page: https://kanterella.com/05000457/LER-2D1990-2D008-2D03-2C_-3Aon_900517-2Cunit_at_Power_Permissive_Circuit_Actuated_on_Train_a_of_Solid_State_Protection_Sys.Caused_by_Procedural_Deficiency_in_That_Switc…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-008-03, :on 900517,unit at Power Permissive Circuit Actuated on Train a of Solid State Protection Sys.Caused by Procedural Deficiency in That Switch Rotation Not Specified. Procedure Revised

LER-1990-007-03, :on 900523,pressurizer Pressure Channel 458 Failed Low & Channel 455 Deviated in Excess of Remaining Two Channels.Caused by Defective Wire on Internal Portion of Pressure Transmitter.Transmitter Replaced
type: Subject
label: 05000457/LER-1990-007-03, :on 900523,pressurizer Pressure Channel 458 Failed Low & Channel 455 Deviated in Excess of Remaining Two Channels.Caused by Defective Wire on Internal Portion of Pressure Transmitter.Transmitter Replaced
page: https://kanterella.com/05000457/LER-2D1990-2D007-2D03-2C_-3Aon_900523-2Cpressurizer_Pressure_Channel_458_Failed_Low_-26_Channel_455_Deviated_in_Excess_of_Remaining_Two_Channels.Caused_by_Defective_Wir…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-007-03, :on 900523,pressurizer Pressure Channel 458 Failed Low & Channel 455 Deviated in Excess of Remaining Two Channels.Caused by Defective Wire on Internal Portion of Pressure Transmitter.Transmitter Replaced

LER-1990-006-04, :on 891204 & 900416,diesel Generator 1B Experienced Slow Start.Caused by Crisscrossed Starting Airlines for Cylinders 6L & 9L.Starting Airlines Reconnected & Verified to Correct
type: Subject
label: 05000456/LER-1990-006-04, :on 891204 & 900416,diesel Generator 1B Experienced Slow Start.Caused by Crisscrossed Starting Airlines for Cylinders 6L & 9L.Starting Airlines Reconnected & Verified to Correct
page: https://kanterella.com/05000456/LER-2D1990-2D006-2D04-2C_-3Aon_891204_-26_900416-2Cdiesel_Generator_1B_Experienced_Slow_Start.Caused_by_Crisscrossed_Starting_Airlines_for_Cylinders_6L_-26_9L.Starting_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1990-006-04, :on 891204 & 900416,diesel Generator 1B Experienced Slow Start.Caused by Crisscrossed Starting Airlines for Cylinders 6L & 9L.Starting Airlines Reconnected & Verified to Correct

05000457/LER-1990-004-08, :on 900416,diesel Generator 2A Speed Oscillated Prior to Maint Teardown.Caused by Component Failure.Resistors Replaced & Placed on 3-yr Replacement Frequency
type: Subject
page: https://kanterella.com/05000457/LER-2D1990-2D004-2D08-2C_-3Aon_900416-2Cdiesel_Generator_2A_Speed_Oscillated_Prior_to_Maint_Teardown.Caused_by_Component_Failure.Resistors_Replaced_-26_Placed_on_3-2Dyr…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-004-08, :on 900416,diesel Generator 2A Speed Oscillated Prior to Maint Teardown.Caused by Component Failure.Resistors Replaced & Placed on 3-yr Replacement Frequency

LER-1990-005-07, :on 900413,determined That Pressures for MSIVs a & D Were Outside Acceptance Criteria of Procedure.Caused by Procedural Deficiencies.Procedures Being Revised to Reflect Values of 4,800 Psig to 6,000 Psig
type: Subject
label: 05000456/LER-1990-005-07, :on 900413,determined That Pressures for MSIVs a & D Were Outside Acceptance Criteria of Procedure.Caused by Procedural Deficiencies.Procedures Being Revised to Reflect Values of 4,800 Psig to 6,000 Psig
page: https://kanterella.com/05000456/LER-2D1990-2D005-2D07-2C_-3Aon_900413-2Cdetermined_That_Pressures_for_MSIVs_a_-26_D_Were_Outside_Acceptance_Criteria_of_Procedure.Caused_by_Procedural_Deficiencies.Proc…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1990-005-07, :on 900413,determined That Pressures for MSIVs a & D Were Outside Acceptance Criteria of Procedure.Caused by Procedural Deficiencies.Procedures Being Revised to Reflect Values of 4,800 Psig to 6,000 Psig

05000457/LER-1990-003-09, :on 900405,inadvertent Train B Safety Injection Initiation Signal Occurred Due to Programmatic Deficiency. Training Developed & Lens Evaluated for Replacement
type: Subject
page: https://kanterella.com/05000457/LER-2D1990-2D003-2D09-2C_-3Aon_900405-2Cinadvertent_Train_B_Safety_Injection_Initiation_Signal_Occurred_Due_to_Programmatic_Deficiency._Training_Developed_-26_Lens_Eval…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-003-09, :on 900405,inadvertent Train B Safety Injection Initiation Signal Occurred Due to Programmatic Deficiency. Training Developed & Lens Evaluated for Replacement

LER-1990-003-08, :on 900326,trip Nuclear Instrumentation Bistables Failed to Trip within 6 H Required by Tech Specs. Caused by Personnel Error.Training Will Be Conducted for Operating Personnel.Procedures Revised
type: Subject
label: 05000456/LER-1990-003-08, :on 900326,trip Nuclear Instrumentation Bistables Failed to Trip within 6 H Required by Tech Specs. Caused by Personnel Error.Training Will Be Conducted for Operating Personnel.Procedures Revised
page: https://kanterella.com/05000456/LER-2D1990-2D003-2D08-2C_-3Aon_900326-2Ctrip_Nuclear_Instrumentation_Bistables_Failed_to_Trip_within_6_H_Required_by_Tech_Specs._Caused_by_Personnel_Error.Training_Will…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1990-003-08, :on 900326,trip Nuclear Instrumentation Bistables Failed to Trip within 6 H Required by Tech Specs. Caused by Personnel Error.Training Will Be Conducted for Operating Personnel.Procedures Revised

LER-1990-004-07, :on 900328,containment Ventilation Isolation Actuation Occurred.Caused by Perturbation of 345 Kv Transmission Sys as Result of Phase B Insulator Failure. Engineering Evaluation Conducted on Monitors
type: Subject
label: 05000456/LER-1990-004-07, :on 900328,containment Ventilation Isolation Actuation Occurred.Caused by Perturbation of 345 Kv Transmission Sys as Result of Phase B Insulator Failure. Engineering Evaluation Conducted on Monitors
page: https://kanterella.com/05000456/LER-2D1990-2D004-2D07-2C_-3Aon_900328-2Ccontainment_Ventilation_Isolation_Actuation_Occurred.Caused_by_Perturbation_of_345_Kv_Transmission_Sys_as_Result_of_Phase_B_Insu…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1990-004-07, :on 900328,containment Ventilation Isolation Actuation Occurred.Caused by Perturbation of 345 Kv Transmission Sys as Result of Phase B Insulator Failure. Engineering Evaluation Conducted on Monitors

LER-1990-002-10, :on 900318,operator Placed RHR 2A Pump on Recirculation for Boron Sample Resulting in Transfer of Pressurizer Inventory to Refueling Water Storage Tank.Caused by Procedural Deficiencies
type: Subject
label: 05000457/LER-1990-002-10, :on 900318,operator Placed RHR 2A Pump on Recirculation for Boron Sample Resulting in Transfer of Pressurizer Inventory to Refueling Water Storage Tank.Caused by Procedural Deficiencies
page: https://kanterella.com/05000457/LER-2D1990-2D002-2D10-2C_-3Aon_900318-2Coperator_Placed_RHR_2A_Pump_on_Recirculation_for_Boron_Sample_Resulting_in_Transfer_of_Pressurizer_Inventory_to_Refueling_Water_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1990-002-10, :on 900318,operator Placed RHR 2A Pump on Recirculation for Boron Sample Resulting in Transfer of Pressurizer Inventory to Refueling Water Storage Tank.Caused by Procedural Deficiencies

LER-1990-002-03, :on 900119,discovered That Flanges Not Added to Procedure 1BwOS, Primary Containment Integrity Verification of Outside Containment Isolation Devices. Caused by Program Weakness.Training Held
type: Subject
label: 05000456/LER-1990-002-03, :on 900119,discovered That Flanges Not Added to Procedure 1BwOS, Primary Containment Integrity Verification of Outside Containment Isolation Devices. Caused by Program Weakness.Training Held
page: https://kanterella.com/05000456/LER-2D1990-2D002-2D03-2C_-3Aon_900119-2Cdiscovered_That_Flanges_Not_Added_to_Procedure_1BwOS-2C_Primary_Containment_Integrity_Verification_of_Outside_Containment_Isolat…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1990-002-03, :on 900119,discovered That Flanges Not Added to Procedure 1BwOS, Primary Containment Integrity Verification of Outside Containment Isolation Devices. Caused by Program Weakness.Training Held

LER-1990-001-04, :on 900112,reactor Tripped During Dc Ground Isolation Activities When Auxiliary Relay Energized,Causing Turbine Governor & Reheat Interceptor Valves to Close.Caused by Increasing Steam Pressure.Valves Closed
type: Subject
label: 05000456/LER-1990-001-04, :on 900112,reactor Tripped During Dc Ground Isolation Activities When Auxiliary Relay Energized,Causing Turbine Governor & Reheat Interceptor Valves to Close.Caused by Increasing Steam Pressure.Valves Closed
page: https://kanterella.com/05000456/LER-2D1990-2D001-2D04-2C_-3Aon_900112-2Creactor_Tripped_During_Dc_Ground_Isolation_Activities_When_Auxiliary_Relay_Energized-2CCausing_Turbine_Governor_-26_Reheat_Inter…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1990-001-04, :on 900112,reactor Tripped During Dc Ground Isolation Activities When Auxiliary Relay Energized,Causing Turbine Governor & Reheat Interceptor Valves to Close.Caused by Increasing Steam Pressure.Valves Closed

LER-1989-019-04, :on 891219,discovered That Procedure Did Not Adequately Test Response Times for High Steamline Pressure Rate Steamline Isolation Signal.Caused by Deficient Procedure.Procedures Re Response Time Revised
type: Subject
label: 05000456/LER-1989-019-04, :on 891219,discovered That Procedure Did Not Adequately Test Response Times for High Steamline Pressure Rate Steamline Isolation Signal.Caused by Deficient Procedure.Procedures Re Response Time Revised
page: https://kanterella.com/05000456/LER-2D1989-2D019-2D04-2C_-3Aon_891219-2Cdiscovered_That_Procedure_Did_Not_Adequately_Test_Response_Times_for_High_Steamline_Pressure_Rate_Steamline_Isolation_Signal.Cau…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-019-04, :on 891219,discovered That Procedure Did Not Adequately Test Response Times for High Steamline Pressure Rate Steamline Isolation Signal.Caused by Deficient Procedure.Procedures Re Response Time Revised

LER-1989-017-05, :on 891206,gas Detector Channel of Process Radiation Monitor Experienced Spike,Resulting in Alert Alarm.On 891210,spike on Channel Resulted in High Radiation Alarm.Caused by Failed Detector
type: Subject
label: 05000456/LER-1989-017-05, :on 891206,gas Detector Channel of Process Radiation Monitor Experienced Spike,Resulting in Alert Alarm.On 891210,spike on Channel Resulted in High Radiation Alarm.Caused by Failed Detector
page: https://kanterella.com/05000456/LER-2D1989-2D017-2D05-2C_-3Aon_891206-2Cgas_Detector_Channel_of_Process_Radiation_Monitor_Experienced_Spike-2CResulting_in_Alert_Alarm.On_891210-2Cspike_on_Channel_Resu…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-017-05, :on 891206,gas Detector Channel of Process Radiation Monitor Experienced Spike,Resulting in Alert Alarm.On 891210,spike on Channel Resulted in High Radiation Alarm.Caused by Failed Detector

LER-1989-018-04, :on 891215,as Lead on volt-ohm Meter Landed, Containment Bldg Fuel Handling Incident Area Radiation Monitor Went Into Alert Alarm & Interlock Actuation.Caused by Procedure Deficiency.Signal Reset
type: Subject
label: 05000456/LER-1989-018-04, :on 891215,as Lead on volt-ohm Meter Landed, Containment Bldg Fuel Handling Incident Area Radiation Monitor Went Into Alert Alarm & Interlock Actuation.Caused by Procedure Deficiency.Signal Reset
page: https://kanterella.com/05000456/LER-2D1989-2D018-2D04-2C_-3Aon_891215-2Cas_Lead_on_volt-2Dohm_Meter_Landed-2C_Containment_Bldg_Fuel_Handling_Incident_Area_Radiation_Monitor_Went_Into_Alert_Alarm_-26_I…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-018-04, :on 891215,as Lead on volt-ohm Meter Landed, Containment Bldg Fuel Handling Incident Area Radiation Monitor Went Into Alert Alarm & Interlock Actuation.Caused by Procedure Deficiency.Signal Reset

LER-1989-016-05, :on 891201,RHR Pump Suction Relief Valve Premature Actuation Occurred & Failed to Reseat.Caused by Deficient Work Practices & Pesonnel Error.Maint Procedures Reviewed.Training Conducted
type: Subject
label: 05000456/LER-1989-016-05, :on 891201,RHR Pump Suction Relief Valve Premature Actuation Occurred & Failed to Reseat.Caused by Deficient Work Practices & Pesonnel Error.Maint Procedures Reviewed.Training Conducted
page: https://kanterella.com/05000456/LER-2D1989-2D016-2D05-2C_-3Aon_891201-2CRHR_Pump_Suction_Relief_Valve_Premature_Actuation_Occurred_-26_Failed_to_Reseat.Caused_by_Deficient_Work_Practices_-26_Pesonnel_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-016-05, :on 891201,RHR Pump Suction Relief Valve Premature Actuation Occurred & Failed to Reseat.Caused by Deficient Work Practices & Pesonnel Error.Maint Procedures Reviewed.Training Conducted

auxiliary Feedwater Pump 2B Pump Control Switch in Pull Out Per Stated Reasons,Automatic Initiation of Pump Sys Unavailable for 6 Minutes.Caused by Procedural Deficiency.Keys to Be Color Coded
type: Subject
label: 05000457/LER-1989-007-09, :on 891110,w/auxiliary Feedwater Pump 2B Pump Control Switch in Pull Out Per Stated Reasons,Automatic Initiation of Pump Sys Unavailable for 6 Minutes.Caused by Procedural Deficiency.Keys to Be Color Coded
page: https://kanterella.com/05000457/LER-2D1989-2D007-2D09-2C_-3Aon_891110-2Cw/auxiliary_Feedwater_Pump_2B_Pump_Control_Switch_in_Pull_Out_Per_Stated_Reasons-2CAutomatic_Initiation_of_Pump_Sys_Unavailable_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-007-09, :on 891110,w/auxiliary Feedwater Pump 2B Pump Control Switch in Pull Out Per Stated Reasons,Automatic Initiation of Pump Sys Unavailable for 6 Minutes.Caused by Procedural Deficiency.Keys to Be Color Coded

LER-1987-006-03, :on 870120,4 H Fire Watch Patrol Detained by Radiation Chemistry Personnel Due to Not Signing Latest Radiation Work Permit & on 870131,did Not Start Route.Caused by Personnel Error.Personnel Retrained
type: Subject
label: 05000456/LER-1987-006-03, :on 870120,4 H Fire Watch Patrol Detained by Radiation Chemistry Personnel Due to Not Signing Latest Radiation Work Permit & on 870131,did Not Start Route.Caused by Personnel Error.Personnel Retrained
page: https://kanterella.com/05000456/LER-2D1987-2D006-2D03-2C_-3Aon_870120-2C4_H_Fire_Watch_Patrol_Detained_by_Radiation_Chemistry_Personnel_Due_to_Not_Signing_Latest_Radiation_Work_Permit_-26_on_870131-2C…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1987-006-03, :on 870120,4 H Fire Watch Patrol Detained by Radiation Chemistry Personnel Due to Not Signing Latest Radiation Work Permit & on 870131,did Not Start Route.Caused by Personnel Error.Personnel Retrained

LER-1989-008-10, :on 891228,equipment Attendant Discovered Refueling Water Storage Tank Vent Line Temp Less than 35 F. Caused by Preservice Deficiency.Storage Tank Vent Path Temp Verified at 36 F
type: Subject
label: 05000457/LER-1989-008-10, :on 891228,equipment Attendant Discovered Refueling Water Storage Tank Vent Line Temp Less than 35 F. Caused by Preservice Deficiency.Storage Tank Vent Path Temp Verified at 36 F
page: https://kanterella.com/05000457/LER-2D1989-2D008-2D10-2C_-3Aon_891228-2Cequipment_Attendant_Discovered_Refueling_Water_Storage_Tank_Vent_Line_Temp_Less_than_35_F._Caused_by_Preservice_Deficiency.Stora…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-008-10, :on 891228,equipment Attendant Discovered Refueling Water Storage Tank Vent Line Temp Less than 35 F. Caused by Preservice Deficiency.Storage Tank Vent Path Temp Verified at 36 F

LER-1989-020-04, :on 891223,failure to Verify Safety Injection Accumulator Boron Concentration within Specified Time.Caused by Programmatic Deficiency.Procedure Revised to Include Action Requirement Sheet
type: Subject
label: 05000456/LER-1989-020-04, :on 891223,failure to Verify Safety Injection Accumulator Boron Concentration within Specified Time.Caused by Programmatic Deficiency.Procedure Revised to Include Action Requirement Sheet
page: https://kanterella.com/05000456/LER-2D1989-2D020-2D04-2C_-3Aon_891223-2Cfailure_to_Verify_Safety_Injection_Accumulator_Boron_Concentration_within_Specified_Time.Caused_by_Programmatic_Deficiency.Proce…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-020-04, :on 891223,failure to Verify Safety Injection Accumulator Boron Concentration within Specified Time.Caused by Programmatic Deficiency.Procedure Revised to Include Action Requirement Sheet

LER-1989-005-10, :on 891002,discovered That Tech Spec Action Statement Was Not Entered When safety-related Bus Was Removed from Svc.Caused by Procedural deficiency.Out-of-svc Procedure Will Be Revised
type: Subject
label: 05000457/LER-1989-005-10, :on 891002,discovered That Tech Spec Action Statement Was Not Entered When safety-related Bus Was Removed from Svc.Caused by Procedural deficiency.Out-of-svc Procedure Will Be Revised
page: https://kanterella.com/05000457/LER-2D1989-2D005-2D10-2C_-3Aon_891002-2Cdiscovered_That_Tech_Spec_Action_Statement_Was_Not_Entered_When_safety-2Drelated_Bus_Was_Removed_from_Svc.Caused_by_Procedural_d…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-005-10, :on 891002,discovered That Tech Spec Action Statement Was Not Entered When safety-related Bus Was Removed from Svc.Caused by Procedural deficiency.Out-of-svc Procedure Will Be Revised

Design of Steam Generator Blowdown Sys Identified,Minimizing Auxiliary Feedwater Flow Requirements.Caused by Preservice Design Deficiency.Temporary Design Changes Made
type: Subject
label: 05000456/LER-1989-013-04, :on 891005,discrepancy W/Design of Steam Generator Blowdown Sys Identified,Minimizing Auxiliary Feedwater Flow Requirements.Caused by Preservice Design Deficiency.Temporary Design Changes Made
page: https://kanterella.com/05000456/LER-2D1989-2D013-2D04-2C_-3Aon_891005-2Cdiscrepancy_W/Design_of_Steam_Generator_Blowdown_Sys_Identified-2CMinimizing_Auxiliary_Feedwater_Flow_Requirements.Caused_by_Pre…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-013-04, :on 891005,discrepancy W/Design of Steam Generator Blowdown Sys Identified,Minimizing Auxiliary Feedwater Flow Requirements.Caused by Preservice Design Deficiency.Temporary Design Changes Made

ML20033E128
type: Subject
page: https://kanterella.com/ML20033E128
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: ML20033E128

ML20101R194
type: Subject
page: https://kanterella.com/ML20101R194
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: ML20101R194

LER-1989-015-04, :on 891020,sample Canisters for Auxiliary Bldg Vent Stack Radiation Monitor Removed & Not Analyzed within 48 H.Caused by Programmatic Deficiencies & Personnel Error. Procedures & Training Programs Revised
type: Subject
label: 05000456/LER-1989-015-04, :on 891020,sample Canisters for Auxiliary Bldg Vent Stack Radiation Monitor Removed & Not Analyzed within 48 H.Caused by Programmatic Deficiencies & Personnel Error. Procedures & Training Programs Revised
page: https://kanterella.com/05000456/LER-2D1989-2D015-2D04-2C_-3Aon_891020-2Csample_Canisters_for_Auxiliary_Bldg_Vent_Stack_Radiation_Monitor_Removed_-26_Not_Analyzed_within_48_H.Caused_by_Programmatic_Def…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-015-04, :on 891020,sample Canisters for Auxiliary Bldg Vent Stack Radiation Monitor Removed & Not Analyzed within 48 H.Caused by Programmatic Deficiencies & Personnel Error. Procedures & Training Programs Revised

LER-1989-002-01, :on 890416,main Steamline Low Pressure Reactor Trip,Safety Injection & Main Steamline Isolation Occurred. Caused by Mgt & Procedural Deficiencies.Formal Policy on Use of Extra Operator During Startup Developed
type: Subject
label: 05000456/LER-1989-002-01, :on 890416,main Steamline Low Pressure Reactor Trip,Safety Injection & Main Steamline Isolation Occurred. Caused by Mgt & Procedural Deficiencies.Formal Policy on Use of Extra Operator During Startup Developed
page: https://kanterella.com/05000456/LER-2D1989-2D002-2D01-2C_-3Aon_890416-2Cmain_Steamline_Low_Pressure_Reactor_Trip-2CSafety_Injection_-26_Main_Steamline_Isolation_Occurred._Caused_by_Mgt_-26_Procedural_…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-002-01, :on 890416,main Steamline Low Pressure Reactor Trip,Safety Injection & Main Steamline Isolation Occurred. Caused by Mgt & Procedural Deficiencies.Formal Policy on Use of Extra Operator During Startup Developed

High Visibility Labels
type: Subject
label: 05000457/LER-1989-006-10, :on 890314,nonlicensed Operator Placed Eductor 2B Spray Additive Tank Suction Throttle Valve 2CS021B in Locked Open Position.Caused by Incorrect Valve Labeling. Valves to Be Provided W/High Visibility Labels
page: https://kanterella.com/05000457/LER-2D1989-2D006-2D10-2C_-3Aon_890314-2Cnonlicensed_Operator_Placed_Eductor_2B_Spray_Additive_Tank_Suction_Throttle_Valve_2CS021B_in_Locked_Open_Position.Caused_by_Inco…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-006-10, :on 890314,nonlicensed Operator Placed Eductor 2B Spray Additive Tank Suction Throttle Valve 2CS021B in Locked Open Position.Caused by Incorrect Valve Labeling. Valves to Be Provided W/High Visibility Labels

LER-1989-012-05, :on 891016,momentary Loss of Power to Fuel Handling Bldg (Fhb) Area Radiation Monitor Caused Fhb Charcoal Booster Fan to Auto Start.Caused by Personnel Error.Fan Secured & Isolation Signal Reset
type: Subject
label: 05000456/LER-1989-012-05, :on 891016,momentary Loss of Power to Fuel Handling Bldg (Fhb) Area Radiation Monitor Caused Fhb Charcoal Booster Fan to Auto Start.Caused by Personnel Error.Fan Secured & Isolation Signal Reset
page: https://kanterella.com/05000456/LER-2D1989-2D012-2D05-2C_-3Aon_891016-2Cmomentary_Loss_of_Power_to_Fuel_Handling_Bldg_-28Fhb-29_Area_Radiation_Monitor_Caused_Fhb_Charcoal_Booster_Fan_to_Auto_Start.Cau…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-012-05, :on 891016,momentary Loss of Power to Fuel Handling Bldg (Fhb) Area Radiation Monitor Caused Fhb Charcoal Booster Fan to Auto Start.Caused by Personnel Error.Fan Secured & Isolation Signal Reset

Different Model Valve
type: Subject
label: 05000456/LER-1989-010-04, :on 890915,measured Leakrate of Hydrogen Analyzer Containment Isolation Valve Was Larger W/Valve Indicating Closed.Caused by Incorrect Labeling of Coil Leads.Valve Replaced W/Different Model Valve
page: https://kanterella.com/05000456/LER-2D1989-2D010-2D04-2C_-3Aon_890915-2Cmeasured_Leakrate_of_Hydrogen_Analyzer_Containment_Isolation_Valve_Was_Larger_W/Valve_Indicating_Closed.Caused_by_Incorrect_Labe…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-010-04, :on 890915,measured Leakrate of Hydrogen Analyzer Containment Isolation Valve Was Larger W/Valve Indicating Closed.Caused by Incorrect Labeling of Coil Leads.Valve Replaced W/Different Model Valve

LER-1989-011-04, :on 890920,high Head Safety Injection Valve 1SI8801A Not Capable of Being Powered by Operable Emergency Power Source.Caused by Diesel Generator 1A Being Out of Svc. Policy Statement Issued & Program Revised
type: Subject
label: 05000456/LER-1989-011-04, :on 890920,high Head Safety Injection Valve 1SI8801A Not Capable of Being Powered by Operable Emergency Power Source.Caused by Diesel Generator 1A Being Out of Svc. Policy Statement Issued & Program Revised
page: https://kanterella.com/05000456/LER-2D1989-2D011-2D04-2C_-3Aon_890920-2Chigh_Head_Safety_Injection_Valve_1SI8801A_Not_Capable_of_Being_Powered_by_Operable_Emergency_Power_Source.Caused_by_Diesel_Gener…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000456/LER-1989-011-04, :on 890920,high Head Safety Injection Valve 1SI8801A Not Capable of Being Powered by Operable Emergency Power Source.Caused by Diesel Generator 1A Being Out of Svc. Policy Statement Issued & Program Revised

LER-1989-004-09, :on 890907,reactor Trip Occurred as Result of Lightning Induced Voltage Transient Affecting Rod Control Sys.Caused by Lightning Striking Containment.Rod Control Sys Devices Reset
type: Subject
label: 05000457/LER-1989-004-09, :on 890907,reactor Trip Occurred as Result of Lightning Induced Voltage Transient Affecting Rod Control Sys.Caused by Lightning Striking Containment.Rod Control Sys Devices Reset
page: https://kanterella.com/05000457/LER-2D1989-2D004-2D09-2C_-3Aon_890907-2Creactor_Trip_Occurred_as_Result_of_Lightning_Induced_Voltage_Transient_Affecting_Rod_Control_Sys.Caused_by_Lightning_Striking_Co…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-004-09, :on 890907,reactor Trip Occurred as Result of Lightning Induced Voltage Transient Affecting Rod Control Sys.Caused by Lightning Striking Containment.Rod Control Sys Devices Reset

LER-1989-002-10, :on 890511,unit 345 Kv Bus 11 Received Trip Signal from Transmission Substation 177,resulting in Reactor Trip.Caused by Defective Trip Coil.Phase a Trip Coil Repaired & Relay Time Delays Increased
type: Subject
label: 05000457/LER-1989-002-10, :on 890511,unit 345 Kv Bus 11 Received Trip Signal from Transmission Substation 177,resulting in Reactor Trip.Caused by Defective Trip Coil.Phase a Trip Coil Repaired & Relay Time Delays Increased
page: https://kanterella.com/05000457/LER-2D1989-2D002-2D10-2C_-3Aon_890511-2Cunit_345_Kv_Bus_11_Received_Trip_Signal_from_Transmission_Substation_177-2Cresulting_in_Reactor_Trip.Caused_by_Defective_Trip_Co…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000457/LER-1989-002-10, :on 890511,unit 345 Kv Bus 11 Received Trip Signal from Transmission Substation 177,resulting in Reactor Trip.Caused by Defective Trip Coil.Phase a Trip Coil Repaired & Relay Time Delays Increased

05000454/LER-1984-037-03, :on 841226,gas Monitor Channels of Radiation Monitor OPR34J Went Into Interlock Due to Loss of Vacuum Alarm.Cause Unknown.Alarms Reset Automatically
type: Subject
page: https://kanterella.com/05000454/LER-2D1984-2D037-2D03-2C_-3Aon_841226-2Cgas_Monitor_Channels_of_Radiation_Monitor_OPR34J_Went_Into_Interlock_Due_to_Loss_of_Vacuum_Alarm.Cause_Unknown.Alarms_Reset_Auto…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-037-03, :on 841226,gas Monitor Channels of Radiation Monitor OPR34J Went Into Interlock Due to Loss of Vacuum Alarm.Cause Unknown.Alarms Reset Automatically

LER-1984-005-08, :on 841106-07,block Wall Between Control Room Area & Auxiliary Bldg Discovered Open.Block Wall Penetration Sealed,Control Room Pressure Boundary Walked Down & Two Addl Leaky Penetrations Sealed
type: Subject
label: 05000454/LER-1984-005-08, :on 841106-07,block Wall Between Control Room Area & Auxiliary Bldg Discovered Open.Block Wall Penetration Sealed,Control Room Pressure Boundary Walked Down & Two Addl Leaky Penetrations Sealed
page: https://kanterella.com/05000454/LER-2D1984-2D005-2D08-2C_-3Aon_841106-2D07-2Cblock_Wall_Between_Control_Room_Area_-26_Auxiliary_Bldg_Discovered_Open.Block_Wall_Penetration_Sealed-2CControl_Room_Pressu…
wiki namespace: 0
wiki page content language: en
from: Querio R
wiki page sort key: 05000454/LER-1984-005-08, :on 841106-07,block Wall Between Control Room Area & Auxiliary Bldg Discovered Open.Block Wall Penetration Sealed,Control Room Pressure Boundary Walked Down & Two Addl Leaky Penetrations Sealed

ML20135G237
type: Subject
page: https://kanterella.com/ML20135G237
wiki namespace: 0
wiki page content language: en
to: Querio R
wiki page sort key: ML20135G237

ML20141G257
type: Subject
page: https://kanterella.com/ML20141G257
wiki namespace: 0
wiki page content language: en
to: Querio R
wiki page sort key: ML20141G257

ML20149H280
type: Subject
page: https://kanterella.com/ML20149H280
wiki namespace: 0
wiki page content language: en
to: Querio R
wiki page sort key: ML20149H280

ML20012C512
type: Subject
page: https://kanterella.com/ML20012C512
wiki namespace: 0
wiki page content language: en
to: Querio R
wiki page sort key: ML20012C512

From
type: ObjectProperty
page: https://kanterella.com/Property-3AFrom
wiki namespace: 102
wiki page content language: en
wiki page sort key: From
type: wpg

To
type: ObjectProperty
page: https://kanterella.com/Property-3ATo
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