NRC Form 364A
type: Ontology
creation date: 2025-12-07T07:27:45-05:00
imports: http://semantic-mediawiki.org/swivt/1.0

NRC Form 364A
type: Subject
page: https://kanterella.com/NRC_Form_364A
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wiki page content language: en
wiki page sort key: NRC Form 364A

05000029/LER-1985-010, Forwards LER 85-010-00 Re Inadvertent Reactor Scram During Maint Activity
type: Subject
page: https://kanterella.com/05000029/LER-2D1985-2D010-2C_Forwards_LER_85-2D010-2D00_Re_Inadvertent_Reactor_Scram_During_Maint_Activity
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000029/LER-1985-010, Forwards LER 85-010-00 Re Inadvertent Reactor Scram During Maint Activity

IR 05000382/1997009
type: Subject
page: https://kanterella.com/IR_05000382/1997009
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: IR 05000382/1997009

ML20205T262
type: Subject
page: https://kanterella.com/ML20205T262
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: ML20205T262

B16740, Reissues LERs 97-031-00 & 97-014-02 Which Includes Rept Dates That Were Inadvertently Ommited in Previous Rept
type: Subject
page: https://kanterella.com/B16740-2C_Reissues_LERs_97-2D031-2D00_-26_97-2D014-2D02_Which_Includes_Rept_Dates_That_Were_Inadvertently_Ommited_in_Previous_Rept
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: B16740, Reissues LERs 97-031-00 & 97-014-02 Which Includes Rept Dates That Were Inadvertently Ommited in Previous Rept

ML20029D890
type: Subject
page: https://kanterella.com/ML20029D890
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: ML20029D890

LER-1988-019-02, :on 880407,discovered That Two ECCS Pumps to Be Inoperable,Resulting in Inadvertent Entry Into Tech Spec 3.0.3.Caused by Inadequate Work Control.Plant Procedure for Work Control Revised
type: Subject
label: 05000328/LER-1988-019-02, :on 880407,discovered That Two ECCS Pumps to Be Inoperable,Resulting in Inadvertent Entry Into Tech Spec 3.0.3.Caused by Inadequate Work Control.Plant Procedure for Work Control Revised
page: https://kanterella.com/05000328/LER-2D1988-2D019-2D02-2C_-3Aon_880407-2Cdiscovered_That_Two_ECCS_Pumps_to_Be_Inoperable-2CResulting_in_Inadvertent_Entry_Into_Tech_Spec_3.0.3.Caused_by_Inadequate_Work_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1988-019-02, :on 880407,discovered That Two ECCS Pumps to Be Inoperable,Resulting in Inadvertent Entry Into Tech Spec 3.0.3.Caused by Inadequate Work Control.Plant Procedure for Work Control Revised

LER-1989-011, :on 890424,scram Discharge Vol Drain & Vent Valve Stroking Surveillance Test Not Performed.Caused by Procedural Deficiency & Scheduling Error.Surveillance Test Completed Satisfactorily on 890429
type: Subject
label: 05000277/LER-1989-011, :on 890424,scram Discharge Vol Drain & Vent Valve Stroking Surveillance Test Not Performed.Caused by Procedural Deficiency & Scheduling Error.Surveillance Test Completed Satisfactorily on 890429
page: https://kanterella.com/05000277/LER-2D1989-2D011-2C_-3Aon_890424-2Cscram_Discharge_Vol_Drain_-26_Vent_Valve_Stroking_Surveillance_Test_Not_Performed.Caused_by_Procedural_Deficiency_-26_Scheduling_Erro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000277/LER-1989-011, :on 890424,scram Discharge Vol Drain & Vent Valve Stroking Surveillance Test Not Performed.Caused by Procedural Deficiency & Scheduling Error.Surveillance Test Completed Satisfactorily on 890429

LER-1989-006, :on 890224,isolation of RCIC & on 890302, Isolation of HPCI Occurred.Caused by Problems in Electrical Path from Thermocouples Monitoring Area Temp.Retermination of Broken Thermocouple Wire Before Break
type: Subject
label: 05000331/LER-1989-006, :on 890224,isolation of RCIC & on 890302, Isolation of HPCI Occurred.Caused by Problems in Electrical Path from Thermocouples Monitoring Area Temp.Retermination of Broken Thermocouple Wire Before Break
page: https://kanterella.com/05000331/LER-2D1989-2D006-2C_-3Aon_890224-2Cisolation_of_RCIC_-26_on_890302-2C_Isolation_of_HPCI_Occurred.Caused_by_Problems_in_Electrical_Path_from_Thermocouples_Monitoring_Are…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000331/LER-1989-006, :on 890224,isolation of RCIC & on 890302, Isolation of HPCI Occurred.Caused by Problems in Electrical Path from Thermocouples Monitoring Area Temp.Retermination of Broken Thermocouple Wire Before Break

LER-1989-006-02, :on 890331,reactor Protection Sys Deenergized, Resulting in ESF Actuations & Standby Gas Treatment,Control Room Emergency Ventilation & Refuel Zone Isolations.Caused by Personnel Standing on Breaker Cabinet
type: Subject
label: 05000260/LER-1989-006-02, :on 890331,reactor Protection Sys Deenergized, Resulting in ESF Actuations & Standby Gas Treatment,Control Room Emergency Ventilation & Refuel Zone Isolations.Caused by Personnel Standing on Breaker Cabinet
page: https://kanterella.com/05000260/LER-2D1989-2D006-2D02-2C_-3Aon_890331-2Creactor_Protection_Sys_Deenergized-2C_Resulting_in_ESF_Actuations_-26_Standby_Gas_Treatment-2CControl_Room_Emergency_Ventilation…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000260/LER-1989-006-02, :on 890331,reactor Protection Sys Deenergized, Resulting in ESF Actuations & Standby Gas Treatment,Control Room Emergency Ventilation & Refuel Zone Isolations.Caused by Personnel Standing on Breaker Cabinet

LER-1989-009-01, :on 890522,fire Damper Found in Closed Position by Fire Protection Design Engineer.Caused by Failure of Damper Fusible Link.Link Replaced,Damper Opened & Damper Insp Procedure Improved & Clarified
type: Subject
label: 05000318/LER-1989-009-01, :on 890522,fire Damper Found in Closed Position by Fire Protection Design Engineer.Caused by Failure of Damper Fusible Link.Link Replaced,Damper Opened & Damper Insp Procedure Improved & Clarified
page: https://kanterella.com/05000318/LER-2D1989-2D009-2D01-2C_-3Aon_890522-2Cfire_Damper_Found_in_Closed_Position_by_Fire_Protection_Design_Engineer.Caused_by_Failure_of_Damper_Fusible_Link.Link_Replaced-2…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000318/LER-1989-009-01, :on 890522,fire Damper Found in Closed Position by Fire Protection Design Engineer.Caused by Failure of Damper Fusible Link.Link Replaced,Damper Opened & Damper Insp Procedure Improved & Clarified

05000328/LER-1989-005-01, :on 890415,16 & 19,three Unit 2 Reactor Trips Occurred Due to Lo Lo Steam Generator Level During Startup. Cause for 890419 Trip Was Operating Loops Bypass Valves in Manual
type: Subject
page: https://kanterella.com/05000328/LER-2D1989-2D005-2D01-2C_-3Aon_890415-2C16_-26_19-2Cthree_Unit_2_Reactor_Trips_Occurred_Due_to_Lo_Lo_Steam_Generator_Level_During_Startup._Cause_for_890419_Trip_Was_Ope…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1989-005-01, :on 890415,16 & 19,three Unit 2 Reactor Trips Occurred Due to Lo Lo Steam Generator Level During Startup. Cause for 890419 Trip Was Operating Loops Bypass Valves in Manual

Unbypass Functions Were Slightly Above Limits Allowed in Tech Specs.Caused by Emphasis on Checking Bypass Function of Bistable.Channels Properly Calibrated
type: Subject
label: 05000341/LER-1989-014, :on 890603 & 18,discovered That Both Channels Bypass/Unbypass Functions Were Slightly Above Limits Allowed in Tech Specs.Caused by Emphasis on Checking Bypass Function of Bistable.Channels Properly Calibrated
page: https://kanterella.com/05000341/LER-2D1989-2D014-2C_-3Aon_890603_-26_18-2Cdiscovered_That_Both_Channels_Bypass/Unbypass_Functions_Were_Slightly_Above_Limits_Allowed_in_Tech_Specs.Caused_by_Emphasis_on…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000341/LER-1989-014, :on 890603 & 18,discovered That Both Channels Bypass/Unbypass Functions Were Slightly Above Limits Allowed in Tech Specs.Caused by Emphasis on Checking Bypass Function of Bistable.Channels Properly Calibrated

LER-1988-029, :on 881110,inadequate Sealing of ECCS Pump Rooms Results in Plant Being Out of Design Basis.Caused by Lack of Clear Assignment of Penetrations to Mechanical or Civil Disciplines of Engineer Organization
type: Subject
label: 05000277/LER-1988-029, :on 881110,inadequate Sealing of ECCS Pump Rooms Results in Plant Being Out of Design Basis.Caused by Lack of Clear Assignment of Penetrations to Mechanical or Civil Disciplines of Engineer Organization
page: https://kanterella.com/05000277/LER-2D1988-2D029-2C_-3Aon_881110-2Cinadequate_Sealing_of_ECCS_Pump_Rooms_Results_in_Plant_Being_Out_of_Design_Basis.Caused_by_Lack_of_Clear_Assignment_of_Penetrations_t…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000277/LER-1988-029, :on 881110,inadequate Sealing of ECCS Pump Rooms Results in Plant Being Out of Design Basis.Caused by Lack of Clear Assignment of Penetrations to Mechanical or Civil Disciplines of Engineer Organization

LER-1989-015, :on 890311,surveillance Review Group Noted That Section 8.4 Not Been Performed within Max Time Interval Permitted by Tech Spec 4.0.2.Caused by Personnel Error. Individual Counseled on Failure to Use Ref
type: Subject
label: 05000461/LER-1989-015, :on 890311,surveillance Review Group Noted That Section 8.4 Not Been Performed within Max Time Interval Permitted by Tech Spec 4.0.2.Caused by Personnel Error. Individual Counseled on Failure to Use Ref
page: https://kanterella.com/05000461/LER-2D1989-2D015-2C_-3Aon_890311-2Csurveillance_Review_Group_Noted_That_Section_8.4_Not_Been_Performed_within_Max_Time_Interval_Permitted_by_Tech_Spec_4.0.2.Caused_by_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000461/LER-1989-015, :on 890311,surveillance Review Group Noted That Section 8.4 Not Been Performed within Max Time Interval Permitted by Tech Spec 4.0.2.Caused by Personnel Error. Individual Counseled on Failure to Use Ref

LER-1989-007-01, :on 890319,train a Control Room Isolation (Cri) Occurred.Caused by Personnel Error.Facility Assistance Shift Operations Supervisor Suspended Maint Activity on Smoke Detectors & Verified Train a Cri for Radiation
type: Subject
label: 05000327/LER-1989-007-01, :on 890319,train a Control Room Isolation (Cri) Occurred.Caused by Personnel Error.Facility Assistance Shift Operations Supervisor Suspended Maint Activity on Smoke Detectors & Verified Train a Cri for Radiation
page: https://kanterella.com/05000327/LER-2D1989-2D007-2D01-2C_-3Aon_890319-2Ctrain_a_Control_Room_Isolation_-28Cri-29_Occurred.Caused_by_Personnel_Error.Facility_Assistance_Shift_Operations_Supervisor_Susp…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1989-007-01, :on 890319,train a Control Room Isolation (Cri) Occurred.Caused by Personnel Error.Facility Assistance Shift Operations Supervisor Suspended Maint Activity on Smoke Detectors & Verified Train a Cri for Radiation

05000282/LER-1987-015-01, :on 870727,automatic Start of Diesel Generator & Other Equipment Actuations Occurred.Caused by Severe Weather.Plant Restored to Previous Condition
type: Subject
page: https://kanterella.com/05000282/LER-2D1987-2D015-2D01-2C_-3Aon_870727-2Cautomatic_Start_of_Diesel_Generator_-26_Other_Equipment_Actuations_Occurred.Caused_by_Severe_Weather.Plant_Restored_to_Previous_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000282/LER-1987-015-01, :on 870727,automatic Start of Diesel Generator & Other Equipment Actuations Occurred.Caused by Severe Weather.Plant Restored to Previous Condition

LER-1987-036, :on 870802,improper Valve Line Up During Fill & Vent Operation of RHR Caused Reactor Water to Divert from Reactor Vessel to Suppression Pool Causing Reactor Scram to Occur.Caused by Operator Error
type: Subject
label: 05000341/LER-1987-036, :on 870802,improper Valve Line Up During Fill & Vent Operation of RHR Caused Reactor Water to Divert from Reactor Vessel to Suppression Pool Causing Reactor Scram to Occur.Caused by Operator Error
page: https://kanterella.com/05000341/LER-2D1987-2D036-2C_-3Aon_870802-2Cimproper_Valve_Line_Up_During_Fill_-26_Vent_Operation_of_RHR_Caused_Reactor_Water_to_Divert_from_Reactor_Vessel_to_Suppression_Pool_C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000341/LER-1987-036, :on 870802,improper Valve Line Up During Fill & Vent Operation of RHR Caused Reactor Water to Divert from Reactor Vessel to Suppression Pool Causing Reactor Scram to Occur.Caused by Operator Error

LER-1987-013-01, :on 870712,standby Gas Treatment Sys Trains A,B & C & Control Room Emergency Ventilation Sys Trains a & B Actuated & Refuel Zone Isolation Occurred.Caused by Setpoint of Detector Lower than Vendor Recommendation
type: Subject
label: 05000259/LER-1987-013-01, :on 870712,standby Gas Treatment Sys Trains A,B & C & Control Room Emergency Ventilation Sys Trains a & B Actuated & Refuel Zone Isolation Occurred.Caused by Setpoint of Detector Lower than Vendor Recommendation
page: https://kanterella.com/05000259/LER-2D1987-2D013-2D01-2C_-3Aon_870712-2Cstandby_Gas_Treatment_Sys_Trains_A-2CB_-26_C_-26_Control_Room_Emergency_Ventilation_Sys_Trains_a_-26_B_Actuated_-26_Refuel_Zone_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1987-013-01, :on 870712,standby Gas Treatment Sys Trains A,B & C & Control Room Emergency Ventilation Sys Trains a & B Actuated & Refuel Zone Isolation Occurred.Caused by Setpoint of Detector Lower than Vendor Recommendation

LER-1998-004-01, :on 980723,manual Plant Trip Occurred Due to Moisture Separator Reheater Vent Line Rupture.Caused by Flow Accelerated Corrosion.Replaced Ruptured Pipe & Completed Insp of Other Small Bore high-energy Piping
type: Subject
label: 05000318/LER-1998-004-01, :on 980723,manual Plant Trip Occurred Due to Moisture Separator Reheater Vent Line Rupture.Caused by Flow Accelerated Corrosion.Replaced Ruptured Pipe & Completed Insp of Other Small Bore high-energy Piping
page: https://kanterella.com/05000318/LER-2D1998-2D004-2D01-2C_-3Aon_980723-2Cmanual_Plant_Trip_Occurred_Due_to_Moisture_Separator_Reheater_Vent_Line_Rupture.Caused_by_Flow_Accelerated_Corrosion.Replaced_Ru…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000318/LER-1998-004-01, :on 980723,manual Plant Trip Occurred Due to Moisture Separator Reheater Vent Line Rupture.Caused by Flow Accelerated Corrosion.Replaced Ruptured Pipe & Completed Insp of Other Small Bore high-energy Piping

LER-1987-023-01, :on 871124,Kaman Process Vent Normal Range Radiation monitor,RI-GW-178-1,declared Inoperable.Caused by Loose Connection Between Central Processing Unit Card & Sys. Central Processing Unit Card Replaced
type: Subject
label: 05000338/LER-1987-023-01, :on 871124,Kaman Process Vent Normal Range Radiation monitor,RI-GW-178-1,declared Inoperable.Caused by Loose Connection Between Central Processing Unit Card & Sys. Central Processing Unit Card Replaced
page: https://kanterella.com/05000338/LER-2D1987-2D023-2D01-2C_-3Aon_871124-2CKaman_Process_Vent_Normal_Range_Radiation_monitor-2CRI-2DGW-2D178-2D1-2Cdeclared_Inoperable.Caused_by_Loose_Connection_Between_C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000338/LER-1987-023-01, :on 871124,Kaman Process Vent Normal Range Radiation monitor,RI-GW-178-1,declared Inoperable.Caused by Loose Connection Between Central Processing Unit Card & Sys. Central Processing Unit Card Replaced

LER-1987-024-01, :on 870930,unplanned RWCU Isolation Occurred. Caused by Degraded Electrical Connections on Temp Switch. Isolation Reset & Sys Returned to Svc.Connections on Temp Switch Repaired
type: Subject
label: 05000259/LER-1987-024-01, :on 870930,unplanned RWCU Isolation Occurred. Caused by Degraded Electrical Connections on Temp Switch. Isolation Reset & Sys Returned to Svc.Connections on Temp Switch Repaired
page: https://kanterella.com/05000259/LER-2D1987-2D024-2D01-2C_-3Aon_870930-2Cunplanned_RWCU_Isolation_Occurred._Caused_by_Degraded_Electrical_Connections_on_Temp_Switch._Isolation_Reset_-26_Sys_Returned_to…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1987-024-01, :on 870930,unplanned RWCU Isolation Occurred. Caused by Degraded Electrical Connections on Temp Switch. Isolation Reset & Sys Returned to Svc.Connections on Temp Switch Repaired

LER-1987-036, :on 860830,incorrect Alignment Performed Rendering Nuclear Svc Water (Rn) Train a Inoperable Re Unit 2 Power Operation.Caused by Design Deficiency Due to Incorrect Identification of Rn Alignment
type: Subject
label: 05000413/LER-1987-036, :on 860830,incorrect Alignment Performed Rendering Nuclear Svc Water (Rn) Train a Inoperable Re Unit 2 Power Operation.Caused by Design Deficiency Due to Incorrect Identification of Rn Alignment
page: https://kanterella.com/05000413/LER-2D1987-2D036-2C_-3Aon_860830-2Cincorrect_Alignment_Performed_Rendering_Nuclear_Svc_Water_-28Rn-29_Train_a_Inoperable_Re_Unit_2_Power_Operation.Caused_by_Design_Defi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1987-036, :on 860830,incorrect Alignment Performed Rendering Nuclear Svc Water (Rn) Train a Inoperable Re Unit 2 Power Operation.Caused by Design Deficiency Due to Incorrect Identification of Rn Alignment

LER-1989-002-02, :on 890208,buried Raw Cooling Water Discharge Piping Between Reactor Bldgs & Circulating Water Discharge Conduit Not Seismically Qualified.Caused by Design Error. Corrective Action Evaluated & Implemented
type: Subject
label: 05000259/LER-1989-002-02, :on 890208,buried Raw Cooling Water Discharge Piping Between Reactor Bldgs & Circulating Water Discharge Conduit Not Seismically Qualified.Caused by Design Error. Corrective Action Evaluated & Implemented
page: https://kanterella.com/05000259/LER-2D1989-2D002-2D02-2C_-3Aon_890208-2Cburied_Raw_Cooling_Water_Discharge_Piping_Between_Reactor_Bldgs_-26_Circulating_Water_Discharge_Conduit_Not_Seismically_Qualifie…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1989-002-02, :on 890208,buried Raw Cooling Water Discharge Piping Between Reactor Bldgs & Circulating Water Discharge Conduit Not Seismically Qualified.Caused by Design Error. Corrective Action Evaluated & Implemented

LER-1989-004, :on 890127,discovered Two Primary Containment Air Operated Valves Inoperable Resulting in Unit Shutdown. Caused by Pressure Drop Rate of Stored Air Supply for Valves.New Tubing Installed
type: Subject
label: 05000293/LER-1989-004, :on 890127,discovered Two Primary Containment Air Operated Valves Inoperable Resulting in Unit Shutdown. Caused by Pressure Drop Rate of Stored Air Supply for Valves.New Tubing Installed
page: https://kanterella.com/05000293/LER-2D1989-2D004-2C_-3Aon_890127-2Cdiscovered_Two_Primary_Containment_Air_Operated_Valves_Inoperable_Resulting_in_Unit_Shutdown._Caused_by_Pressure_Drop_Rate_of_Stored_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000293/LER-1989-004, :on 890127,discovered Two Primary Containment Air Operated Valves Inoperable Resulting in Unit Shutdown. Caused by Pressure Drop Rate of Stored Air Supply for Valves.New Tubing Installed

05000382/LER-1987-023, :on 870813,invalid Grab Samples of Condenser Vacuum Pump Effluent Gas Resulted Due to Condensation from Pump Steam.Caused by Loop Seal Failure.New Method for Sampling Devised
type: Subject
page: https://kanterella.com/05000382/LER-2D1987-2D023-2C_-3Aon_870813-2Cinvalid_Grab_Samples_of_Condenser_Vacuum_Pump_Effluent_Gas_Resulted_Due_to_Condensation_from_Pump_Steam.Caused_by_Loop_Seal_Failure.N…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1987-023, :on 870813,invalid Grab Samples of Condenser Vacuum Pump Effluent Gas Resulted Due to Condensation from Pump Steam.Caused by Loop Seal Failure.New Method for Sampling Devised

LER-1997-002-01, :on 970122,identified Potential Overpressurization of Penetrations During Accident Conditions.Installed Mod to Protect Component Cooling Water Supply from Overpressurization Concerns on 970504
type: Subject
label: 05000346/LER-1997-002-01, :on 970122,identified Potential Overpressurization of Penetrations During Accident Conditions.Installed Mod to Protect Component Cooling Water Supply from Overpressurization Concerns on 970504
page: https://kanterella.com/05000346/LER-2D1997-2D002-2D01-2C_-3Aon_970122-2Cidentified_Potential_Overpressurization_of_Penetrations_During_Accident_Conditions.Installed_Mod_to_Protect_Component_Cooling_Wa…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000346/LER-1997-002-01, :on 970122,identified Potential Overpressurization of Penetrations During Accident Conditions.Installed Mod to Protect Component Cooling Water Supply from Overpressurization Concerns on 970504

LER-1998-002-02, :on 980318,assembly Error Led to Malfunctioning Governor Causing EDG Inoperability.Caused by Sticking Shutdown Solenoid on DG Governor.Established Periodic Replacement Schedule for Solenoid
type: Subject
label: 05000366/LER-1998-002-02, :on 980318,assembly Error Led to Malfunctioning Governor Causing EDG Inoperability.Caused by Sticking Shutdown Solenoid on DG Governor.Established Periodic Replacement Schedule for Solenoid
page: https://kanterella.com/05000366/LER-2D1998-2D002-2D02-2C_-3Aon_980318-2Cassembly_Error_Led_to_Malfunctioning_Governor_Causing_EDG_Inoperability.Caused_by_Sticking_Shutdown_Solenoid_on_DG_Governor.Esta…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000366/LER-1998-002-02, :on 980318,assembly Error Led to Malfunctioning Governor Causing EDG Inoperability.Caused by Sticking Shutdown Solenoid on DG Governor.Established Periodic Replacement Schedule for Solenoid

LER-1997-015-03, :on 970813,containment Penetration Test,Vent & Drain Valves Were Not Surveilled within 31 Days.Caused by Difference in Interpretation of Regulations.Surveillance Applied to All Valves
type: Subject
label: 05000454/LER-1997-015-03, :on 970813,containment Penetration Test,Vent & Drain Valves Were Not Surveilled within 31 Days.Caused by Difference in Interpretation of Regulations.Surveillance Applied to All Valves
page: https://kanterella.com/05000454/LER-2D1997-2D015-2D03-2C_-3Aon_970813-2Ccontainment_Penetration_Test-2CVent_-26_Drain_Valves_Were_Not_Surveilled_within_31_Days.Caused_by_Difference_in_Interpretation_o…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000454/LER-1997-015-03, :on 970813,containment Penetration Test,Vent & Drain Valves Were Not Surveilled within 31 Days.Caused by Difference in Interpretation of Regulations.Surveillance Applied to All Valves

LER-1997-003-04, :on 970812,potential for Containment Pressure to Exceed Design During Purging or Inerting If LOCA Occurred Due to Unanalyzed Suppression Pool Bypass Path Was Noted. Caused by Design Error.Revised Sys Operating Instructions
type: Subject
label: 05000259/LER-1997-003-04, :on 970812,potential for Containment Pressure to Exceed Design During Purging or Inerting If LOCA Occurred Due to Unanalyzed Suppression Pool Bypass Path Was Noted. Caused by Design Error.Revised Sys Operating Instructions
page: https://kanterella.com/05000259/LER-2D1997-2D003-2D04-2C_-3Aon_970812-2Cpotential_for_Containment_Pressure_to_Exceed_Design_During_Purging_or_Inerting_If_LOCA_Occurred_Due_to_Unanalyzed_Suppression_Po…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1997-003-04, :on 970812,potential for Containment Pressure to Exceed Design During Purging or Inerting If LOCA Occurred Due to Unanalyzed Suppression Pool Bypass Path Was Noted. Caused by Design Error.Revised Sys Operating Instructions

LER-1986-045, :on 861002,short Occurred in Remote Control Power Branch Circuit Resulting in Blown MIS-5 Fuse in Feeder Circuit C42.Caused by Deenergized Wire Touching Energized Part of Circuit During Maint
type: Subject
label: 05000327/LER-1986-045, :on 861002,short Occurred in Remote Control Power Branch Circuit Resulting in Blown MIS-5 Fuse in Feeder Circuit C42.Caused by Deenergized Wire Touching Energized Part of Circuit During Maint
page: https://kanterella.com/05000327/LER-2D1986-2D045-2C_-3Aon_861002-2Cshort_Occurred_in_Remote_Control_Power_Branch_Circuit_Resulting_in_Blown_MIS-2D5_Fuse_in_Feeder_Circuit_C42.Caused_by_Deenergized_Wir…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1986-045, :on 861002,short Occurred in Remote Control Power Branch Circuit Resulting in Blown MIS-5 Fuse in Feeder Circuit C42.Caused by Deenergized Wire Touching Energized Part of Circuit During Maint

05000220/LER-1986-030, :on 860916,reactor Bldg Ventilation Radiation Monitor 11 Tripped on Loss of Power,Resulting in Loss of Reactor Protection Sys Bus.Work Request Generated
type: Subject
page: https://kanterella.com/05000220/LER-2D1986-2D030-2C_-3Aon_860916-2Creactor_Bldg_Ventilation_Radiation_Monitor_11_Tripped_on_Loss_of_Power-2CResulting_in_Loss_of_Reactor_Protection_Sys_Bus.Work_Request…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000220/LER-1986-030, :on 860916,reactor Bldg Ventilation Radiation Monitor 11 Tripped on Loss of Power,Resulting in Loss of Reactor Protection Sys Bus.Work Request Generated

LER-1986-020-02, :on 861118,generator Loss of Load Transient Occurred Followed by Main Feedwater Pump 2B Tripping on High Discharge Pressure Signal.Caused by Relay Fault.Operators Realigned Pump 2A to Feedwater Header
type: Subject
label: 05000370/LER-1986-020-02, :on 861118,generator Loss of Load Transient Occurred Followed by Main Feedwater Pump 2B Tripping on High Discharge Pressure Signal.Caused by Relay Fault.Operators Realigned Pump 2A to Feedwater Header
page: https://kanterella.com/05000370/LER-2D1986-2D020-2D02-2C_-3Aon_861118-2Cgenerator_Loss_of_Load_Transient_Occurred_Followed_by_Main_Feedwater_Pump_2B_Tripping_on_High_Discharge_Pressure_Signal.Caused_b…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1986-020-02, :on 861118,generator Loss of Load Transient Occurred Followed by Main Feedwater Pump 2B Tripping on High Discharge Pressure Signal.Caused by Relay Fault.Operators Realigned Pump 2A to Feedwater Header

reactor at 90- Power,Esf Ventilation Fans Discovered Inoperable for Approx 18 Minutes.Caused by Damper Misalignment & Failure to Rept Error.Position Indicators Evaluated
type: Subject
label: 05000315/LER-1986-024-01, :on 861111,w/reactor at 90% Power,Esf Ventilation Fans Discovered Inoperable for Approx 18 Minutes.Caused by Damper Misalignment & Failure to Rept Error.Position Indicators Evaluated
page: https://kanterella.com/05000315/LER-2D1986-2D024-2D01-2C_-3Aon_861111-2Cw/reactor_at_90-_Power-2CEsf_Ventilation_Fans_Discovered_Inoperable_for_Approx_18_Minutes.Caused_by_Damper_Misalignment_-26_Fail…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000315/LER-1986-024-01, :on 861111,w/reactor at 90% Power,Esf Ventilation Fans Discovered Inoperable for Approx 18 Minutes.Caused by Damper Misalignment & Failure to Rept Error.Position Indicators Evaluated

LER-1986-010-04, :on 860828,potential for Lack of Pump Runout Protection During Certain Design Basis Transients Found. Caused by Failure to Analyze Emergency Feedwater Sys for All Design Basis Transients
type: Subject
label: 05000269/LER-1986-010-04, :on 860828,potential for Lack of Pump Runout Protection During Certain Design Basis Transients Found. Caused by Failure to Analyze Emergency Feedwater Sys for All Design Basis Transients
page: https://kanterella.com/05000269/LER-2D1986-2D010-2D04-2C_-3Aon_860828-2Cpotential_for_Lack_of_Pump_Runout_Protection_During_Certain_Design_Basis_Transients_Found._Caused_by_Failure_to_Analyze_Emergenc…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1986-010-04, :on 860828,potential for Lack of Pump Runout Protection During Certain Design Basis Transients Found. Caused by Failure to Analyze Emergency Feedwater Sys for All Design Basis Transients

O Being Properly Closed.Caused by Personnel Error.Door Closed Immediately.Warehouseman Counseled
type: Subject
label: 05000348/LER-1987-008, :on 870504,fire Watch Discovered Not Posted as Required by Tech Spec 3.7.11.2 & Fire Door Left W/O Being Properly Closed.Caused by Personnel Error.Door Closed Immediately.Warehouseman Counseled
page: https://kanterella.com/05000348/LER-2D1987-2D008-2C_-3Aon_870504-2Cfire_Watch_Discovered_Not_Posted_as_Required_by_Tech_Spec_3.7.11.2_-26_Fire_Door_Left_W/O_Being_Properly_Closed.Caused_by_Personnel_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000348/LER-1987-008, :on 870504,fire Watch Discovered Not Posted as Required by Tech Spec 3.7.11.2 & Fire Door Left W/O Being Properly Closed.Caused by Personnel Error.Door Closed Immediately.Warehouseman Counseled

LER-1986-014-03, :on 860818,ESF Train B Safety Injection Signal Actuated from Pressurizer Safety Injection Low Pressurizer Pressure Signal.Caused by Defective Procedure.Procedure Change Implemented
type: Subject
label: 05000369/LER-1986-014-03, :on 860818,ESF Train B Safety Injection Signal Actuated from Pressurizer Safety Injection Low Pressurizer Pressure Signal.Caused by Defective Procedure.Procedure Change Implemented
page: https://kanterella.com/05000369/LER-2D1986-2D014-2D03-2C_-3Aon_860818-2CESF_Train_B_Safety_Injection_Signal_Actuated_from_Pressurizer_Safety_Injection_Low_Pressurizer_Pressure_Signal.Caused_by_Defecti…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1986-014-03, :on 860818,ESF Train B Safety Injection Signal Actuated from Pressurizer Safety Injection Low Pressurizer Pressure Signal.Caused by Defective Procedure.Procedure Change Implemented

05000348/LER-1986-014, :on 860801,both Trains of Charging Pumps Inoperable.Caused by Clogged Gear Oil Coolers.Svc Water Task Force Established to Investigate Problem
type: Subject
page: https://kanterella.com/05000348/LER-2D1986-2D014-2C_-3Aon_860801-2Cboth_Trains_of_Charging_Pumps_Inoperable.Caused_by_Clogged_Gear_Oil_Coolers.Svc_Water_Task_Force_Established_to_Investigate_Problem
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000348/LER-1986-014, :on 860801,both Trains of Charging Pumps Inoperable.Caused by Clogged Gear Oil Coolers.Svc Water Task Force Established to Investigate Problem

LER-1986-045-01, :on 861011,turbine-driven Auxiliary Feedwater Pump Found to Be Inoperable from Standby Shutdown Facility. Caused by Incorrectly Installed Solenoid Valve Due to Design Deficiency.Valve Retubed
type: Subject
label: 05000414/LER-1986-045-01, :on 861011,turbine-driven Auxiliary Feedwater Pump Found to Be Inoperable from Standby Shutdown Facility. Caused by Incorrectly Installed Solenoid Valve Due to Design Deficiency.Valve Retubed
page: https://kanterella.com/05000414/LER-2D1986-2D045-2D01-2C_-3Aon_861011-2Cturbine-2Ddriven_Auxiliary_Feedwater_Pump_Found_to_Be_Inoperable_from_Standby_Shutdown_Facility._Caused_by_Incorrectly_Installed…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1986-045-01, :on 861011,turbine-driven Auxiliary Feedwater Pump Found to Be Inoperable from Standby Shutdown Facility. Caused by Incorrectly Installed Solenoid Valve Due to Design Deficiency.Valve Retubed

LER-1986-044-01, :on 861021,two Containment Gas Monitor Containment Isolation Valves Found Inoperable.Caused by Equipment Failure.Valves MISV5230 & MISV5232 Opened. Sample Flow Annunciator Repaired
type: Subject
label: 05000414/LER-1986-044-01, :on 861021,two Containment Gas Monitor Containment Isolation Valves Found Inoperable.Caused by Equipment Failure.Valves MISV5230 & MISV5232 Opened. Sample Flow Annunciator Repaired
page: https://kanterella.com/05000414/LER-2D1986-2D044-2D01-2C_-3Aon_861021-2Ctwo_Containment_Gas_Monitor_Containment_Isolation_Valves_Found_Inoperable.Caused_by_Equipment_Failure.Valves_MISV5230_-26_MISV52…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1986-044-01, :on 861021,two Containment Gas Monitor Containment Isolation Valves Found Inoperable.Caused by Equipment Failure.Valves MISV5230 & MISV5232 Opened. Sample Flow Annunciator Repaired

LER-1986-002-01, :on 860117,loss of Power to Radiation Monitors Occurred,Initiating Standby Gas Treatment Sys & Tripping Reactor Bldg Ventilation Sys.Caused by Procedural Inadequacy.Procedures Will Be Changed
type: Subject
label: 05000249/LER-1986-002-01, :on 860117,loss of Power to Radiation Monitors Occurred,Initiating Standby Gas Treatment Sys & Tripping Reactor Bldg Ventilation Sys.Caused by Procedural Inadequacy.Procedures Will Be Changed
page: https://kanterella.com/05000249/LER-2D1986-2D002-2D01-2C_-3Aon_860117-2Closs_of_Power_to_Radiation_Monitors_Occurred-2CInitiating_Standby_Gas_Treatment_Sys_-26_Tripping_Reactor_Bldg_Ventilation_Sys.Ca…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000249/LER-1986-002-01, :on 860117,loss of Power to Radiation Monitors Occurred,Initiating Standby Gas Treatment Sys & Tripping Reactor Bldg Ventilation Sys.Caused by Procedural Inadequacy.Procedures Will Be Changed

LER-1986-031, :on 861014,reactor Bldg Emergency Ventilation & one-half Scram Initiated.Caused by Faulty Potentiometers in Voltage Regulator of MG Set 172.Voltage Regulator replaced.One-half Scram Reset
type: Subject
label: 05000220/LER-1986-031, :on 861014,reactor Bldg Emergency Ventilation & one-half Scram Initiated.Caused by Faulty Potentiometers in Voltage Regulator of MG Set 172.Voltage Regulator replaced.One-half Scram Reset
page: https://kanterella.com/05000220/LER-2D1986-2D031-2C_-3Aon_861014-2Creactor_Bldg_Emergency_Ventilation_-26_one-2Dhalf_Scram_Initiated.Caused_by_Faulty_Potentiometers_in_Voltage_Regulator_of_MG_Set_172.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000220/LER-1986-031, :on 861014,reactor Bldg Emergency Ventilation & one-half Scram Initiated.Caused by Faulty Potentiometers in Voltage Regulator of MG Set 172.Voltage Regulator replaced.One-half Scram Reset

LER-1986-022-01, :on 860703,potential Safety Concern Identified During Design Review Re nonsafety-grade Air Solenoid Operators on Testable Check Valves That Could Fail.Air Supply to Solenoids Removed During Operation
type: Subject
label: 05000259/LER-1986-022-01, :on 860703,potential Safety Concern Identified During Design Review Re nonsafety-grade Air Solenoid Operators on Testable Check Valves That Could Fail.Air Supply to Solenoids Removed During Operation
page: https://kanterella.com/05000259/LER-2D1986-2D022-2D01-2C_-3Aon_860703-2Cpotential_Safety_Concern_Identified_During_Design_Review_Re_nonsafety-2Dgrade_Air_Solenoid_Operators_on_Testable_Check_Valves_Th…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1986-022-01, :on 860703,potential Safety Concern Identified During Design Review Re nonsafety-grade Air Solenoid Operators on Testable Check Valves That Could Fail.Air Supply to Solenoids Removed During Operation

Bolts
type: Subject
label: 05000336/LER-1986-022-01, :on 861223,reactor Tripped Due to Low Water Level in Steam Generator 1.Caused by Improperly Installed Bus Voltage Potential Transformer Drawer.Drawer & Cover Realigned & Reinstalled Squarely W/Bolts
page: https://kanterella.com/05000336/LER-2D1986-2D022-2D01-2C_-3Aon_861223-2Creactor_Tripped_Due_to_Low_Water_Level_in_Steam_Generator_1.Caused_by_Improperly_Installed_Bus_Voltage_Potential_Transformer_Dra…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000336/LER-1986-022-01, :on 861223,reactor Tripped Due to Low Water Level in Steam Generator 1.Caused by Improperly Installed Bus Voltage Potential Transformer Drawer.Drawer & Cover Realigned & Reinstalled Squarely W/Bolts

LER-1986-020, :on 861118,main Generator Loss of Load Transient Occurred Followed by Main Feedwater Pump 2B Tripping on High Discharge Pressure Signal.Caused by Excessive Moisture in Isolated Phase Bus
type: Subject
label: 05000370/LER-1986-020, :on 861118,main Generator Loss of Load Transient Occurred Followed by Main Feedwater Pump 2B Tripping on High Discharge Pressure Signal.Caused by Excessive Moisture in Isolated Phase Bus
page: https://kanterella.com/05000370/LER-2D1986-2D020-2C_-3Aon_861118-2Cmain_Generator_Loss_of_Load_Transient_Occurred_Followed_by_Main_Feedwater_Pump_2B_Tripping_on_High_Discharge_Pressure_Signal.Caused_b…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1986-020, :on 861118,main Generator Loss of Load Transient Occurred Followed by Main Feedwater Pump 2B Tripping on High Discharge Pressure Signal.Caused by Excessive Moisture in Isolated Phase Bus

LER-1986-005-05, :on 860723,reactor Tripped on High Steam Generator Level.Caused by Failure of RCS Flow Transmitter 2A.Work Request to Repair Transmitter Initiated & Unit Stabilized in Hot Shutdown Condition
type: Subject
label: 05000270/LER-1986-005-05, :on 860723,reactor Tripped on High Steam Generator Level.Caused by Failure of RCS Flow Transmitter 2A.Work Request to Repair Transmitter Initiated & Unit Stabilized in Hot Shutdown Condition
page: https://kanterella.com/05000270/LER-2D1986-2D005-2D05-2C_-3Aon_860723-2Creactor_Tripped_on_High_Steam_Generator_Level.Caused_by_Failure_of_RCS_Flow_Transmitter_2A.Work_Request_to_Repair_Transmitter_In…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000270/LER-1986-005-05, :on 860723,reactor Tripped on High Steam Generator Level.Caused by Failure of RCS Flow Transmitter 2A.Work Request to Repair Transmitter Initiated & Unit Stabilized in Hot Shutdown Condition

LER-1986-013-02, :on 860626,discovered Loose Fuel Pellets from Fuel Assembly D-03 on Reactor Core Baffle Plate Near Core Location P-3.Caused by Baffle Jetting.Assembly Removed from Core & Core Redesigned
type: Subject
label: 05000369/LER-1986-013-02, :on 860626,discovered Loose Fuel Pellets from Fuel Assembly D-03 on Reactor Core Baffle Plate Near Core Location P-3.Caused by Baffle Jetting.Assembly Removed from Core & Core Redesigned
page: https://kanterella.com/05000369/LER-2D1986-2D013-2D02-2C_-3Aon_860626-2Cdiscovered_Loose_Fuel_Pellets_from_Fuel_Assembly_D-2D03_on_Reactor_Core_Baffle_Plate_Near_Core_Location_P-2D3.Caused_by_Baffle_J…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1986-013-02, :on 860626,discovered Loose Fuel Pellets from Fuel Assembly D-03 on Reactor Core Baffle Plate Near Core Location P-3.Caused by Baffle Jetting.Assembly Removed from Core & Core Redesigned

LER-1987-004-01, :on 870205,intake Cooling Water Pumps 4C & 4B Declared Out of Svc.Caused by Repairs to Discharge Check Valve Air Cylinder & Failure of Pump Shaft Coupling.Repairs Completed & Couplings Replaced
type: Subject
label: 05000251/LER-1987-004-01, :on 870205,intake Cooling Water Pumps 4C & 4B Declared Out of Svc.Caused by Repairs to Discharge Check Valve Air Cylinder & Failure of Pump Shaft Coupling.Repairs Completed & Couplings Replaced
page: https://kanterella.com/05000251/LER-2D1987-2D004-2D01-2C_-3Aon_870205-2Cintake_Cooling_Water_Pumps_4C_-26_4B_Declared_Out_of_Svc.Caused_by_Repairs_to_Discharge_Check_Valve_Air_Cylinder_-26_Failure_of_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000251/LER-1987-004-01, :on 870205,intake Cooling Water Pumps 4C & 4B Declared Out of Svc.Caused by Repairs to Discharge Check Valve Air Cylinder & Failure of Pump Shaft Coupling.Repairs Completed & Couplings Replaced

LER-1986-031, :on 860724,surveillance Requirement Interval for Station Batteries Exceeded by 9 H & 20 Minutes.Caused by Inadequate Shift Turnover & Cumbersome Test Tracking Sys. Event Discussed & Procedures Revised
type: Subject
label: 05000346/LER-1986-031, :on 860724,surveillance Requirement Interval for Station Batteries Exceeded by 9 H & 20 Minutes.Caused by Inadequate Shift Turnover & Cumbersome Test Tracking Sys. Event Discussed & Procedures Revised
page: https://kanterella.com/05000346/LER-2D1986-2D031-2C_-3Aon_860724-2Csurveillance_Requirement_Interval_for_Station_Batteries_Exceeded_by_9_H_-26_20_Minutes.Caused_by_Inadequate_Shift_Turnover_-26_Cumber…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000346/LER-1986-031, :on 860724,surveillance Requirement Interval for Station Batteries Exceeded by 9 H & 20 Minutes.Caused by Inadequate Shift Turnover & Cumbersome Test Tracking Sys. Event Discussed & Procedures Revised

LER-1986-033, :on 861104,during Development of PRA Model, Diesel Generator Bldg Ventilation Design Deficiency Identified.Caused by Failed Close Design of Supply Dampers. Supply Plenum Damper Linkages Wired Open
type: Subject
label: 05000325/LER-1986-033, :on 861104,during Development of PRA Model, Diesel Generator Bldg Ventilation Design Deficiency Identified.Caused by Failed Close Design of Supply Dampers. Supply Plenum Damper Linkages Wired Open
page: https://kanterella.com/05000325/LER-2D1986-2D033-2C_-3Aon_861104-2Cduring_Development_of_PRA_Model-2C_Diesel_Generator_Bldg_Ventilation_Design_Deficiency_Identified.Caused_by_Failed_Close_Design_of_Su…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000325/LER-1986-033, :on 861104,during Development of PRA Model, Diesel Generator Bldg Ventilation Design Deficiency Identified.Caused by Failed Close Design of Supply Dampers. Supply Plenum Damper Linkages Wired Open

LER-1986-036, :on 860708,while Metering Charging Pump Out of Svc,Charging Pump a Taken Out of Svc Due to Broken Shaft. Caused by Metal Fatigue.Plant Placed in Hot Shutdown. Procedures Re Pumps Revised
type: Subject
label: 05000213/LER-1986-036, :on 860708,while Metering Charging Pump Out of Svc,Charging Pump a Taken Out of Svc Due to Broken Shaft. Caused by Metal Fatigue.Plant Placed in Hot Shutdown. Procedures Re Pumps Revised
page: https://kanterella.com/05000213/LER-2D1986-2D036-2C_-3Aon_860708-2Cwhile_Metering_Charging_Pump_Out_of_Svc-2CCharging_Pump_a_Taken_Out_of_Svc_Due_to_Broken_Shaft._Caused_by_Metal_Fatigue.Plant_Placed_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000213/LER-1986-036, :on 860708,while Metering Charging Pump Out of Svc,Charging Pump a Taken Out of Svc Due to Broken Shaft. Caused by Metal Fatigue.Plant Placed in Hot Shutdown. Procedures Re Pumps Revised

LER-1999-013, :on 990825,exceeding TS Limits for RCS Cooldown Rate Was Discovered.Caused by Inadequate Content & Inadequate Implementation of TS Requirements.Page 2 of 2 in Attachment 2 of Incoming Submittal Not Included
type: Subject
label: 05000382/LER-1999-013, :on 990825,exceeding TS Limits for RCS Cooldown Rate Was Discovered.Caused by Inadequate Content & Inadequate Implementation of TS Requirements.Page 2 of 2 in Attachment 2 of Incoming Submittal Not Included
page: https://kanterella.com/05000382/LER-2D1999-2D013-2C_-3Aon_990825-2Cexceeding_TS_Limits_for_RCS_Cooldown_Rate_Was_Discovered.Caused_by_Inadequate_Content_-26_Inadequate_Implementation_of_TS_Requirement…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1999-013, :on 990825,exceeding TS Limits for RCS Cooldown Rate Was Discovered.Caused by Inadequate Content & Inadequate Implementation of TS Requirements.Page 2 of 2 in Attachment 2 of Incoming Submittal Not Included

New Components & Returned Defective Vasasps to Vendor for Analysis
type: Subject
label: 05000458/LER-1997-007-02, :on 970926,discovered Cracked EDG Valve Adjusting Screw Assembly Swivel Pads (Vasasps).Caused by Mfg Defect.Replaced Vasasps in EDGs W/New Components & Returned Defective Vasasps to Vendor for Analysis
page: https://kanterella.com/05000458/LER-2D1997-2D007-2D02-2C_-3Aon_970926-2Cdiscovered_Cracked_EDG_Valve_Adjusting_Screw_Assembly_Swivel_Pads_-28Vasasps-29.Caused_by_Mfg_Defect.Replaced_Vasasps_in_EDGs_W/…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000458/LER-1997-007-02, :on 970926,discovered Cracked EDG Valve Adjusting Screw Assembly Swivel Pads (Vasasps).Caused by Mfg Defect.Replaced Vasasps in EDGs W/New Components & Returned Defective Vasasps to Vendor for Analysis

Water & Subsequent Transformer Trip.Caused by Shortened Microswitch in Relay Housing
type: Subject
label: 05000327/LER-1986-026, :on 860629,sudden Pressure Relay Failed on Common Station Svc Transformer D,Causing Fire Suppression Sys to Spray Transformer W/Water & Subsequent Transformer Trip.Caused by Shortened Microswitch in Relay Housing
page: https://kanterella.com/05000327/LER-2D1986-2D026-2C_-3Aon_860629-2Csudden_Pressure_Relay_Failed_on_Common_Station_Svc_Transformer_D-2CCausing_Fire_Suppression_Sys_to_Spray_Transformer_W/Water_-26_Subs…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1986-026, :on 860629,sudden Pressure Relay Failed on Common Station Svc Transformer D,Causing Fire Suppression Sys to Spray Transformer W/Water & Subsequent Transformer Trip.Caused by Shortened Microswitch in Relay Housing

05000220/LER-1986-017, :on 860615,reactor Scram Occurred.Caused by Reactor Low Water Level Setpoint Being Reached During Operator Surveillance Test for Automatic Startup of HPCI Mode of Feedwater Sys
type: Subject
page: https://kanterella.com/05000220/LER-2D1986-2D017-2C_-3Aon_860615-2Creactor_Scram_Occurred.Caused_by_Reactor_Low_Water_Level_Setpoint_Being_Reached_During_Operator_Surveillance_Test_for_Automatic_Start…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000220/LER-1986-017, :on 860615,reactor Scram Occurred.Caused by Reactor Low Water Level Setpoint Being Reached During Operator Surveillance Test for Automatic Startup of HPCI Mode of Feedwater Sys

LER-1997-009-01, :on 970905,discovered Radwaste Bldg Exhaust Monitor Instrument Channel Calibr Test,Required Ts.Caused by Personnel Error.Comprehensive Root Cause Analysis Completed to Review & Identified Human Performance Considerations
type: Subject
label: 05000333/LER-1997-009-01, :on 970905,discovered Radwaste Bldg Exhaust Monitor Instrument Channel Calibr Test,Required Ts.Caused by Personnel Error.Comprehensive Root Cause Analysis Completed to Review & Identified Human Performance Considerations
page: https://kanterella.com/05000333/LER-2D1997-2D009-2D01-2C_-3Aon_970905-2Cdiscovered_Radwaste_Bldg_Exhaust_Monitor_Instrument_Channel_Calibr_Test-2CRequired_Ts.Caused_by_Personnel_Error.Comprehensive_Ro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000333/LER-1997-009-01, :on 970905,discovered Radwaste Bldg Exhaust Monitor Instrument Channel Calibr Test,Required Ts.Caused by Personnel Error.Comprehensive Root Cause Analysis Completed to Review & Identified Human Performance Considerations

LER-1986-015, :on 860530,reactor Scram Occurred,Initiating Reactor Bldg Emergency Ventilation.Caused by Lifted Neutral Leg of Output Protective Relaying Circuit.Lifted Lead Replaced & Reactor Scram Reset
type: Subject
label: 05000220/LER-1986-015, :on 860530,reactor Scram Occurred,Initiating Reactor Bldg Emergency Ventilation.Caused by Lifted Neutral Leg of Output Protective Relaying Circuit.Lifted Lead Replaced & Reactor Scram Reset
page: https://kanterella.com/05000220/LER-2D1986-2D015-2C_-3Aon_860530-2Creactor_Scram_Occurred-2CInitiating_Reactor_Bldg_Emergency_Ventilation.Caused_by_Lifted_Neutral_Leg_of_Output_Protective_Relaying_Cir…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000220/LER-1986-015, :on 860530,reactor Scram Occurred,Initiating Reactor Bldg Emergency Ventilation.Caused by Lifted Neutral Leg of Output Protective Relaying Circuit.Lifted Lead Replaced & Reactor Scram Reset

05000414/LER-1986-017-01, :on 860429 & 0521,auxiliary Feedwater Pump Turbine & motor-driven Pump Failed to Produce Required Discharge.Caused by Fouled Pressure Cage Assemblies. Assemblies Cleaned
type: Subject
page: https://kanterella.com/05000414/LER-2D1986-2D017-2D01-2C_-3Aon_860429_-26_0521-2Cauxiliary_Feedwater_Pump_Turbine_-26_motor-2Ddriven_Pump_Failed_to_Produce_Required_Discharge.Caused_by_Fouled_Pressure…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1986-017-01, :on 860429 & 0521,auxiliary Feedwater Pump Turbine & motor-driven Pump Failed to Produce Required Discharge.Caused by Fouled Pressure Cage Assemblies. Assemblies Cleaned

LER-1987-003, :on 870122,radiation Monitor Alarmed Due to Contaminated Instrument & Controls (I&C) Technician.Caused by Health Physics Technician Improperly Downgrading Work Permit Requirements.I&C Technician Retrained
type: Subject
label: 05000382/LER-1987-003, :on 870122,radiation Monitor Alarmed Due to Contaminated Instrument & Controls (I&C) Technician.Caused by Health Physics Technician Improperly Downgrading Work Permit Requirements.I&C Technician Retrained
page: https://kanterella.com/05000382/LER-2D1987-2D003-2C_-3Aon_870122-2Cradiation_Monitor_Alarmed_Due_to_Contaminated_Instrument_-26_Controls_-28I-26C-29_Technician.Caused_by_Health_Physics_Technician_Impr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1987-003, :on 870122,radiation Monitor Alarmed Due to Contaminated Instrument & Controls (I&C) Technician.Caused by Health Physics Technician Improperly Downgrading Work Permit Requirements.I&C Technician Retrained

05000280/LER-1986-029, :on 860929,svc Water to Charging Pump Svc Water Subsystem Lost.Caused by Leak on Blowdown Line for in-line Strainer.Line Repaired
type: Subject
page: https://kanterella.com/05000280/LER-2D1986-2D029-2C_-3Aon_860929-2Csvc_Water_to_Charging_Pump_Svc_Water_Subsystem_Lost.Caused_by_Leak_on_Blowdown_Line_for_in-2Dline_Strainer.Line_Repaired
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000280/LER-1986-029, :on 860929,svc Water to Charging Pump Svc Water Subsystem Lost.Caused by Leak on Blowdown Line for in-line Strainer.Line Repaired

LER-1987-004, :on 870113,discovered That Determination of Charcoal Adsorber Bank Efficiency by Technical Instruction TI-9 Performed Improperly.Caused by Personnel error.TI-9 Revised to Ensure Accurate Adsorber Efficiency
type: Subject
label: 05000327/LER-1987-004, :on 870113,discovered That Determination of Charcoal Adsorber Bank Efficiency by Technical Instruction TI-9 Performed Improperly.Caused by Personnel error.TI-9 Revised to Ensure Accurate Adsorber Efficiency
page: https://kanterella.com/05000327/LER-2D1987-2D004-2C_-3Aon_870113-2Cdiscovered_That_Determination_of_Charcoal_Adsorber_Bank_Efficiency_by_Technical_Instruction_TI-2D9_Performed_Improperly.Caused_by_Per…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1987-004, :on 870113,discovered That Determination of Charcoal Adsorber Bank Efficiency by Technical Instruction TI-9 Performed Improperly.Caused by Personnel error.TI-9 Revised to Ensure Accurate Adsorber Efficiency

05000382/LER-1986-021, :on 860924,hourly Firewatch Tour Not Performed in Shutdown Cooling HX Room B.Caused by Personnel Error.Post Order for Firewatch Patrol Revised
type: Subject
page: https://kanterella.com/05000382/LER-2D1986-2D021-2C_-3Aon_860924-2Chourly_Firewatch_Tour_Not_Performed_in_Shutdown_Cooling_HX_Room_B.Caused_by_Personnel_Error.Post_Order_for_Firewatch_Patrol_Revised
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1986-021, :on 860924,hourly Firewatch Tour Not Performed in Shutdown Cooling HX Room B.Caused by Personnel Error.Post Order for Firewatch Patrol Revised

LER-1986-053, :on 860911,reactor Tripped on Low Steam Generator Pressure.Caused by Procedural Inadequacy Re Use of Circuit Card Extender Board During Maint.Notice Distributed & Procedures Revised
type: Subject
label: 05000528/LER-1986-053, :on 860911,reactor Tripped on Low Steam Generator Pressure.Caused by Procedural Inadequacy Re Use of Circuit Card Extender Board During Maint.Notice Distributed & Procedures Revised
page: https://kanterella.com/05000528/LER-2D1986-2D053-2C_-3Aon_860911-2Creactor_Tripped_on_Low_Steam_Generator_Pressure.Caused_by_Procedural_Inadequacy_Re_Use_of_Circuit_Card_Extender_Board_During_Maint.No…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000528/LER-1986-053, :on 860911,reactor Tripped on Low Steam Generator Pressure.Caused by Procedural Inadequacy Re Use of Circuit Card Extender Board During Maint.Notice Distributed & Procedures Revised

O Continuous Fire Watch.Caused by Personnel Error.Design & Annunciator Response Procedure Evaluated
type: Subject
label: 05000483/LER-1986-034, :on 860908,pre-action Sprinkler Sys Protecting Cable Trays of Auxiliary Bldg Inoperable W/O Continuous Fire Watch.Caused by Personnel Error.Design & Annunciator Response Procedure Evaluated
page: https://kanterella.com/05000483/LER-2D1986-2D034-2C_-3Aon_860908-2Cpre-2Daction_Sprinkler_Sys_Protecting_Cable_Trays_of_Auxiliary_Bldg_Inoperable_W/O_Continuous_Fire_Watch.Caused_by_Personnel_Error.De…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000483/LER-1986-034, :on 860908,pre-action Sprinkler Sys Protecting Cable Trays of Auxiliary Bldg Inoperable W/O Continuous Fire Watch.Caused by Personnel Error.Design & Annunciator Response Procedure Evaluated

Review by Station Personnel. Procedures Will Be Revised
type: Subject
label: 05000285/LER-1997-011-01, :on 970819,violation of Tech Specs Due to Inoperability of Radiation Monitor Occurred.Caused by Lack of Depth in Evaluation/Review by Station Personnel. Procedures Will Be Revised
page: https://kanterella.com/05000285/LER-2D1997-2D011-2D01-2C_-3Aon_970819-2Cviolation_of_Tech_Specs_Due_to_Inoperability_of_Radiation_Monitor_Occurred.Caused_by_Lack_of_Depth_in_Evaluation/Review_by_Stati…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1997-011-01, :on 970819,violation of Tech Specs Due to Inoperability of Radiation Monitor Occurred.Caused by Lack of Depth in Evaluation/Review by Station Personnel. Procedures Will Be Revised

LER-1987-001, :on 870115,valve CC-710 Found Leaking Excessively & Valve Seat & Retaining Ring Missing.Caused by Error of Maint & QC Personnel of Installation Contractor.All Valves Listed in Table 3.6-1 Tested
type: Subject
label: 05000382/LER-1987-001, :on 870115,valve CC-710 Found Leaking Excessively & Valve Seat & Retaining Ring Missing.Caused by Error of Maint & QC Personnel of Installation Contractor.All Valves Listed in Table 3.6-1 Tested
page: https://kanterella.com/05000382/LER-2D1987-2D001-2C_-3Aon_870115-2Cvalve_CC-2D710_Found_Leaking_Excessively_-26_Valve_Seat_-26_Retaining_Ring_Missing.Caused_by_Error_of_Maint_-26_QC_Personnel_of_Insta…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1987-001, :on 870115,valve CC-710 Found Leaking Excessively & Valve Seat & Retaining Ring Missing.Caused by Error of Maint & QC Personnel of Installation Contractor.All Valves Listed in Table 3.6-1 Tested

LER-1986-029, :on 860825,reactor Manually Tripped Due to Rod Control Sys Failure Following Turbine Runback.Caused by Slave Cycler Control Card Failure.Card Replaced & Cooling to Rod Control Cabinets Increased
type: Subject
label: 05000483/LER-1986-029, :on 860825,reactor Manually Tripped Due to Rod Control Sys Failure Following Turbine Runback.Caused by Slave Cycler Control Card Failure.Card Replaced & Cooling to Rod Control Cabinets Increased
page: https://kanterella.com/05000483/LER-2D1986-2D029-2C_-3Aon_860825-2Creactor_Manually_Tripped_Due_to_Rod_Control_Sys_Failure_Following_Turbine_Runback.Caused_by_Slave_Cycler_Control_Card_Failure.Card_Re…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000483/LER-1986-029, :on 860825,reactor Manually Tripped Due to Rod Control Sys Failure Following Turbine Runback.Caused by Slave Cycler Control Card Failure.Card Replaced & Cooling to Rod Control Cabinets Increased

LER-1986-028, :on 860818,high Radiation Area Door Not Locked Per Tech Spec 6.12.2.Caused by Damaged Lock Mechanism.Latch Replaced,Other Locked Entrances Inspected & Plant Personnel Instructed in Operation of Locks
type: Subject
label: 05000483/LER-1986-028, :on 860818,high Radiation Area Door Not Locked Per Tech Spec 6.12.2.Caused by Damaged Lock Mechanism.Latch Replaced,Other Locked Entrances Inspected & Plant Personnel Instructed in Operation of Locks
page: https://kanterella.com/05000483/LER-2D1986-2D028-2C_-3Aon_860818-2Chigh_Radiation_Area_Door_Not_Locked_Per_Tech_Spec_6.12.2.Caused_by_Damaged_Lock_Mechanism.Latch_Replaced-2COther_Locked_Entrances_Ins…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000483/LER-1986-028, :on 860818,high Radiation Area Door Not Locked Per Tech Spec 6.12.2.Caused by Damaged Lock Mechanism.Latch Replaced,Other Locked Entrances Inspected & Plant Personnel Instructed in Operation of Locks

Turbine Trip.Caused by Malfunction of nonsafety-related Steam Bypass Control Valves
type: Subject
label: 05000528/LER-1986-045-01, :on 860815,automatic Actuation of Reactor Protection Sys Initiated Automatic Reactor Trip Due to Manual Generator/Turbine Trip.Caused by Malfunction of nonsafety-related Steam Bypass Control Valves
page: https://kanterella.com/05000528/LER-2D1986-2D045-2D01-2C_-3Aon_860815-2Cautomatic_Actuation_of_Reactor_Protection_Sys_Initiated_Automatic_Reactor_Trip_Due_to_Manual_Generator/Turbine_Trip.Caused_by_Ma…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000528/LER-1986-045-01, :on 860815,automatic Actuation of Reactor Protection Sys Initiated Automatic Reactor Trip Due to Manual Generator/Turbine Trip.Caused by Malfunction of nonsafety-related Steam Bypass Control Valves

LER-1986-024, :on 860813 & 14,at 100- Power,Control Room Chillers Failed to Operate.Caused by Clogged Chillers Due to Unfiltered River Water Flowing Through Tubes.Chillers Unclogged & Strainer Returned to Svc
type: Subject
label: 05000280/LER-1986-024, :on 860813 & 14,at 100% Power,Control Room Chillers Failed to Operate.Caused by Clogged Chillers Due to Unfiltered River Water Flowing Through Tubes.Chillers Unclogged & Strainer Returned to Svc
page: https://kanterella.com/05000280/LER-2D1986-2D024-2C_-3Aon_860813_-26_14-2Cat_100-_Power-2CControl_Room_Chillers_Failed_to_Operate.Caused_by_Clogged_Chillers_Due_to_Unfiltered_River_Water_Flowing_Throu…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000280/LER-1986-024, :on 860813 & 14,at 100% Power,Control Room Chillers Failed to Operate.Caused by Clogged Chillers Due to Unfiltered River Water Flowing Through Tubes.Chillers Unclogged & Strainer Returned to Svc

O Informing Chemistry Technicians.Procedure Revised
type: Subject
label: 05000382/LER-1986-017, :on 860811,chemistry Technicians Failed to Sample Proper Gas Decay Tank.Caused by Operations Personnel Realigning Inservice Tanks W/O Informing Chemistry Technicians.Procedure Revised
page: https://kanterella.com/05000382/LER-2D1986-2D017-2C_-3Aon_860811-2Cchemistry_Technicians_Failed_to_Sample_Proper_Gas_Decay_Tank.Caused_by_Operations_Personnel_Realigning_Inservice_Tanks_W/O_Informing_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1986-017, :on 860811,chemistry Technicians Failed to Sample Proper Gas Decay Tank.Caused by Operations Personnel Realigning Inservice Tanks W/O Informing Chemistry Technicians.Procedure Revised

Trip Setpoint Set Factor of 10 Too High Since Plant Startup.Caused by Personnel Error.Rms,Its Database & Data Base Change Methodology Under Review
type: Subject
label: 05000382/LER-1987-001-01, :on 870330,gaseous Waste Mgt Effluent Radiation Monitor Alarm/Trip Setpoint Set Factor of 10 Too High Since Plant Startup.Caused by Personnel Error.Rms,Its Database & Data Base Change Methodology Under Review
page: https://kanterella.com/05000382/LER-2D1987-2D001-2D01-2C_-3Aon_870330-2Cgaseous_Waste_Mgt_Effluent_Radiation_Monitor_Alarm/Trip_Setpoint_Set_Factor_of_10_Too_High_Since_Plant_Startup.Caused_by_Personn…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1987-001-01, :on 870330,gaseous Waste Mgt Effluent Radiation Monitor Alarm/Trip Setpoint Set Factor of 10 Too High Since Plant Startup.Caused by Personnel Error.Rms,Its Database & Data Base Change Methodology Under Review

LER-1986-016, :on 860804 & 21,boron Concentration for Safety Injection Tanks Fell Below Tech Spec Limit.Caused by Insufficient Procedural Requirements.Procedure Change Will Be Made to Prevent Recurrence
type: Subject
label: 05000382/LER-1986-016, :on 860804 & 21,boron Concentration for Safety Injection Tanks Fell Below Tech Spec Limit.Caused by Insufficient Procedural Requirements.Procedure Change Will Be Made to Prevent Recurrence
page: https://kanterella.com/05000382/LER-2D1986-2D016-2C_-3Aon_860804_-26_21-2Cboron_Concentration_for_Safety_Injection_Tanks_Fell_Below_Tech_Spec_Limit.Caused_by_Insufficient_Procedural_Requirements.Proce…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1986-016, :on 860804 & 21,boron Concentration for Safety Injection Tanks Fell Below Tech Spec Limit.Caused by Insufficient Procedural Requirements.Procedure Change Will Be Made to Prevent Recurrence

LER-1986-093, :on 861229,plant Placed Into Operational Condition 1 When Containment Vacuum Breaker Opened.Caused by Personnel Error.Individuals Counseled Re Responsibility to Initiate Limiting Condition for Operation
type: Subject
label: 05000440/LER-1986-093, :on 861229,plant Placed Into Operational Condition 1 When Containment Vacuum Breaker Opened.Caused by Personnel Error.Individuals Counseled Re Responsibility to Initiate Limiting Condition for Operation
page: https://kanterella.com/05000440/LER-2D1986-2D093-2C_-3Aon_861229-2Cplant_Placed_Into_Operational_Condition_1_When_Containment_Vacuum_Breaker_Opened.Caused_by_Personnel_Error.Individuals_Counseled_Re_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000440/LER-1986-093, :on 861229,plant Placed Into Operational Condition 1 When Containment Vacuum Breaker Opened.Caused by Personnel Error.Individuals Counseled Re Responsibility to Initiate Limiting Condition for Operation

05000410/LER-1986-020-01, :on 861218,Div 1 ECCS Initiation Experienced Due to Spurious High Drywell Pressure Signal.Caused by Electricians Replacing Relay.Electrical Maint Training Initiated
type: Subject
page: https://kanterella.com/05000410/LER-2D1986-2D020-2D01-2C_-3Aon_861218-2CDiv_1_ECCS_Initiation_Experienced_Due_to_Spurious_High_Drywell_Pressure_Signal.Caused_by_Electricians_Replacing_Relay.Electrical…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000410/LER-1986-020-01, :on 861218,Div 1 ECCS Initiation Experienced Due to Spurious High Drywell Pressure Signal.Caused by Electricians Replacing Relay.Electrical Maint Training Initiated

LER-1986-045, :on 861117,during Sys Restoration,Incorrect Valving Sequence Caused Damage to Test Return Line for Condensate Storage & Return Tanks.On 861201,water Collected in Cable Vaults Released to Outflow Canal
type: Subject
label: 05000341/LER-1986-045, :on 861117,during Sys Restoration,Incorrect Valving Sequence Caused Damage to Test Return Line for Condensate Storage & Return Tanks.On 861201,water Collected in Cable Vaults Released to Outflow Canal
page: https://kanterella.com/05000341/LER-2D1986-2D045-2C_-3Aon_861117-2Cduring_Sys_Restoration-2CIncorrect_Valving_Sequence_Caused_Damage_to_Test_Return_Line_for_Condensate_Storage_-26_Return_Tanks.On_8612…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000341/LER-1986-045, :on 861117,during Sys Restoration,Incorrect Valving Sequence Caused Damage to Test Return Line for Condensate Storage & Return Tanks.On 861201,water Collected in Cable Vaults Released to Outflow Canal

LER-1986-018-01, :on 861216,while Testing Off Normal Status Sys Isolators,Electrician Placed Jumpers from 120-volt Dc Source to 120-volt Ac Line Source,Resulting in Blown Fuse.Caused by Test Engineer Error.Engineer Disciplined
type: Subject
label: 05000410/LER-1986-018-01, :on 861216,while Testing Off Normal Status Sys Isolators,Electrician Placed Jumpers from 120-volt Dc Source to 120-volt Ac Line Source,Resulting in Blown Fuse.Caused by Test Engineer Error.Engineer Disciplined
page: https://kanterella.com/05000410/LER-2D1986-2D018-2D01-2C_-3Aon_861216-2Cwhile_Testing_Off_Normal_Status_Sys_Isolators-2CElectrician_Placed_Jumpers_from_120-2Dvolt_Dc_Source_to_120-2Dvolt_Ac_Line_Sourc…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000410/LER-1986-018-01, :on 861216,while Testing Off Normal Status Sys Isolators,Electrician Placed Jumpers from 120-volt Dc Source to 120-volt Ac Line Source,Resulting in Blown Fuse.Caused by Test Engineer Error.Engineer Disciplined

O Degrading Performance.Design Change Issued
type: Subject
label: 05000341/LER-1986-017, :on 860624,discovered That Emergency Equipment Cooling Water Sys Capacity Inadequate to Remove Drywell Cooler Heat Loads During Small Break Inside Drywell W/O Degrading Performance.Design Change Issued
page: https://kanterella.com/05000341/LER-2D1986-2D017-2C_-3Aon_860624-2Cdiscovered_That_Emergency_Equipment_Cooling_Water_Sys_Capacity_Inadequate_to_Remove_Drywell_Cooler_Heat_Loads_During_Small_Break_Insi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000341/LER-1986-017, :on 860624,discovered That Emergency Equipment Cooling Water Sys Capacity Inadequate to Remove Drywell Cooler Heat Loads During Small Break Inside Drywell W/O Degrading Performance.Design Change Issued

LER-1986-034, :on 861206,loss of Stack Gas Monitoring Experienced When Radioactive Gaseous Effluent Monitoring Sys Shut Down Sys Sample Supply Pump.Possibly Caused by Problem in Stack Monitoring Sys Software
type: Subject
label: 05000220/LER-1986-034, :on 861206,loss of Stack Gas Monitoring Experienced When Radioactive Gaseous Effluent Monitoring Sys Shut Down Sys Sample Supply Pump.Possibly Caused by Problem in Stack Monitoring Sys Software
page: https://kanterella.com/05000220/LER-2D1986-2D034-2C_-3Aon_861206-2Closs_of_Stack_Gas_Monitoring_Experienced_When_Radioactive_Gaseous_Effluent_Monitoring_Sys_Shut_Down_Sys_Sample_Supply_Pump.Possibly_C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000220/LER-1986-034, :on 861206,loss of Stack Gas Monitoring Experienced When Radioactive Gaseous Effluent Monitoring Sys Shut Down Sys Sample Supply Pump.Possibly Caused by Problem in Stack Monitoring Sys Software

05000409/LER-1986-018, :on 860622,reactor Scrammed Due to Relay Failure & Line Separation at Reactor Water Level Transmitter.Water Level Transmitters Recalibr
type: Subject
page: https://kanterella.com/05000409/LER-2D1986-2D018-2C_-3Aon_860622-2Creactor_Scrammed_Due_to_Relay_Failure_-26_Line_Separation_at_Reactor_Water_Level_Transmitter.Water_Level_Transmitters_Recalibr
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1986-018, :on 860622,reactor Scrammed Due to Relay Failure & Line Separation at Reactor Water Level Transmitter.Water Level Transmitters Recalibr

05000382/LER-1986-012, :on 860625,discovered That Surveillance for Fire Doors D221 & D222 Not Performed on Daily Basis.Caused by Lack of Interdepartmental Communication.Procedure OP-903-001 Revised
type: Subject
page: https://kanterella.com/05000382/LER-2D1986-2D012-2C_-3Aon_860625-2Cdiscovered_That_Surveillance_for_Fire_Doors_D221_-26_D222_Not_Performed_on_Daily_Basis.Caused_by_Lack_of_Interdepartmental_Communicat…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1986-012, :on 860625,discovered That Surveillance for Fire Doors D221 & D222 Not Performed on Daily Basis.Caused by Lack of Interdepartmental Communication.Procedure OP-903-001 Revised

K Actuated During Mod Work,Causing Lockout of Transformer,Trip of Circuit Breakers & Loss of Overhead Emergency Power.Caused by Mechanical Vibration Due to Drilling
type: Subject
label: 05000269/LER-1986-015-04, :on 861120,Keowee Hydro Relay 94 T/K Actuated During Mod Work,Causing Lockout of Transformer,Trip of Circuit Breakers & Loss of Overhead Emergency Power.Caused by Mechanical Vibration Due to Drilling
page: https://kanterella.com/05000269/LER-2D1986-2D015-2D04-2C_-3Aon_861120-2CKeowee_Hydro_Relay_94_T/K_Actuated_During_Mod_Work-2CCausing_Lockout_of_Transformer-2CTrip_of_Circuit_Breakers_-26_Loss_of_Overh…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1986-015-04, :on 861120,Keowee Hydro Relay 94 T/K Actuated During Mod Work,Causing Lockout of Transformer,Trip of Circuit Breakers & Loss of Overhead Emergency Power.Caused by Mechanical Vibration Due to Drilling

LER-1986-008-08, :on 860618,Group II Primary Containment Isolation Received,Causing Isolation of Reactor Bldg Ventilation & Start of Standby Gas Treatment Sys.Caused by Personnel Error.Personnel Cautioned Re Maint
type: Subject
label: 05000249/LER-1986-008-08, :on 860618,Group II Primary Containment Isolation Received,Causing Isolation of Reactor Bldg Ventilation & Start of Standby Gas Treatment Sys.Caused by Personnel Error.Personnel Cautioned Re Maint
page: https://kanterella.com/05000249/LER-2D1986-2D008-2D08-2C_-3Aon_860618-2CGroup_II_Primary_Containment_Isolation_Received-2CCausing_Isolation_of_Reactor_Bldg_Ventilation_-26_Start_of_Standby_Gas_Treatme…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000249/LER-1986-008-08, :on 860618,Group II Primary Containment Isolation Received,Causing Isolation of Reactor Bldg Ventilation & Start of Standby Gas Treatment Sys.Caused by Personnel Error.Personnel Cautioned Re Maint

Installation Deficiency.Styrofoam Cell Spacers Installed
type: Subject
label: 05000269/LER-1986-009-02, :on 860610,discovered That Keowee Battery Racks Did Not Comply W/Seismic Design Requirements.Caused by Poor Communication & Design/Installation Deficiency.Styrofoam Cell Spacers Installed
page: https://kanterella.com/05000269/LER-2D1986-2D009-2D02-2C_-3Aon_860610-2Cdiscovered_That_Keowee_Battery_Racks_Did_Not_Comply_W/Seismic_Design_Requirements.Caused_by_Poor_Communication_-26_Design/Instal…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1986-009-02, :on 860610,discovered That Keowee Battery Racks Did Not Comply W/Seismic Design Requirements.Caused by Poor Communication & Design/Installation Deficiency.Styrofoam Cell Spacers Installed

LER-1986-012-03, :on 860722,reactor Tripped on High Pressurizer Pressure.Caused by Primary to Secondary Sys Mismatch Due to Failed Counter Card within Digital electro-hydraulic Control Sys.Card Replaced
type: Subject
label: 05000370/LER-1986-012-03, :on 860722,reactor Tripped on High Pressurizer Pressure.Caused by Primary to Secondary Sys Mismatch Due to Failed Counter Card within Digital electro-hydraulic Control Sys.Card Replaced
page: https://kanterella.com/05000370/LER-2D1986-2D012-2D03-2C_-3Aon_860722-2Creactor_Tripped_on_High_Pressurizer_Pressure.Caused_by_Primary_to_Secondary_Sys_Mismatch_Due_to_Failed_Counter_Card_within_Digit…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1986-012-03, :on 860722,reactor Tripped on High Pressurizer Pressure.Caused by Primary to Secondary Sys Mismatch Due to Failed Counter Card within Digital electro-hydraulic Control Sys.Card Replaced

LER-1986-001-04, :on 860525,discovered All Valves Located in Boron Injection Flow Path Not Verified in Correct Positions. Caused by Incorrect Statement in Surveillance Instruction. Surveillances Reviewed & Found Acceptable
type: Subject
label: 05000328/LER-1986-001-04, :on 860525,discovered All Valves Located in Boron Injection Flow Path Not Verified in Correct Positions. Caused by Incorrect Statement in Surveillance Instruction. Surveillances Reviewed & Found Acceptable
page: https://kanterella.com/05000328/LER-2D1986-2D001-2D04-2C_-3Aon_860525-2Cdiscovered_All_Valves_Located_in_Boron_Injection_Flow_Path_Not_Verified_in_Correct_Positions._Caused_by_Incorrect_Statement_in_S…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1986-001-04, :on 860525,discovered All Valves Located in Boron Injection Flow Path Not Verified in Correct Positions. Caused by Incorrect Statement in Surveillance Instruction. Surveillances Reviewed & Found Acceptable

LER-1987-006, :on 870313,reactor Trip Occurred.Caused by Closure of Main Feedwater Stop Valve for Steam Generator 2 After Const Worker Bumped Local Control Switch.Cover Installed Over Switch for Valve
type: Subject
label: 05000346/LER-1987-006, :on 870313,reactor Trip Occurred.Caused by Closure of Main Feedwater Stop Valve for Steam Generator 2 After Const Worker Bumped Local Control Switch.Cover Installed Over Switch for Valve
page: https://kanterella.com/05000346/LER-2D1987-2D006-2C_-3Aon_870313-2Creactor_Trip_Occurred.Caused_by_Closure_of_Main_Feedwater_Stop_Valve_for_Steam_Generator_2_After_Const_Worker_Bumped_Local_Control_Sw…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000346/LER-1987-006, :on 870313,reactor Trip Occurred.Caused by Closure of Main Feedwater Stop Valve for Steam Generator 2 After Const Worker Bumped Local Control Switch.Cover Installed Over Switch for Valve

LER-1988-024-01, :on 881017,Group 1 Isolation Signal Due to High Water Level in Reactor Vessel Occurred.Caused by Disassociation of Pin from Feedback Cam Linkage of Valve Positioner for Valve.Linkage Secured
type: Subject
label: 05000293/LER-1988-024-01, :on 881017,Group 1 Isolation Signal Due to High Water Level in Reactor Vessel Occurred.Caused by Disassociation of Pin from Feedback Cam Linkage of Valve Positioner for Valve.Linkage Secured
page: https://kanterella.com/05000293/LER-2D1988-2D024-2D01-2C_-3Aon_881017-2CGroup_1_Isolation_Signal_Due_to_High_Water_Level_in_Reactor_Vessel_Occurred.Caused_by_Disassociation_of_Pin_from_Feedback_Cam_Li…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000293/LER-1988-024-01, :on 881017,Group 1 Isolation Signal Due to High Water Level in Reactor Vessel Occurred.Caused by Disassociation of Pin from Feedback Cam Linkage of Valve Positioner for Valve.Linkage Secured

LER-1987-003, :on 870311,containment Bldg Gas Monitor Alarmed Causing Containment Bldg Ventilation Dampers & Vent Header Valve to Close.Caused by Dirty Contacts on Monitor Ratemeter Range Switch.Isolation Signal Reset
type: Subject
label: 05000409/LER-1987-003, :on 870311,containment Bldg Gas Monitor Alarmed Causing Containment Bldg Ventilation Dampers & Vent Header Valve to Close.Caused by Dirty Contacts on Monitor Ratemeter Range Switch.Isolation Signal Reset
page: https://kanterella.com/05000409/LER-2D1987-2D003-2C_-3Aon_870311-2Ccontainment_Bldg_Gas_Monitor_Alarmed_Causing_Containment_Bldg_Ventilation_Dampers_-26_Vent_Header_Valve_to_Close.Caused_by_Dirty_Cont…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1987-003, :on 870311,containment Bldg Gas Monitor Alarmed Causing Containment Bldg Ventilation Dampers & Vent Header Valve to Close.Caused by Dirty Contacts on Monitor Ratemeter Range Switch.Isolation Signal Reset

LER-1999-002-02, :on 990329,reactor Tripped.Caused by Failed Electrical Connections on Vibration Detector for Number 9 Main Turbine Bearing.Vibration Detectors for Main Turbine Number 9 Bearing Replaced.With
type: Subject
label: 05000324/LER-1999-002-02, :on 990329,reactor Tripped.Caused by Failed Electrical Connections on Vibration Detector for Number 9 Main Turbine Bearing.Vibration Detectors for Main Turbine Number 9 Bearing Replaced.With
page: https://kanterella.com/05000324/LER-2D1999-2D002-2D02-2C_-3Aon_990329-2Creactor_Tripped.Caused_by_Failed_Electrical_Connections_on_Vibration_Detector_for_Number_9_Main_Turbine_Bearing.Vibration_Detect…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000324/LER-1999-002-02, :on 990329,reactor Tripped.Caused by Failed Electrical Connections on Vibration Detector for Number 9 Main Turbine Bearing.Vibration Detectors for Main Turbine Number 9 Bearing Replaced.With

Hhsi Pumps.Caused by Inadequate Consideration of Required Operator Actions.Procedure Revised.With
type: Subject
label: 05000334/LER-1999-004-01, :on 990317,inadequate pre-fire Plan Procedure Guidance Resulted in Potential Damage to Charging/Hhsi Pumps.Caused by Inadequate Consideration of Required Operator Actions.Procedure Revised.With
page: https://kanterella.com/05000334/LER-2D1999-2D004-2D01-2C_-3Aon_990317-2Cinadequate_pre-2Dfire_Plan_Procedure_Guidance_Resulted_in_Potential_Damage_to_Charging/Hhsi_Pumps.Caused_by_Inadequate_Considera…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000334/LER-1999-004-01, :on 990317,inadequate pre-fire Plan Procedure Guidance Resulted in Potential Damage to Charging/Hhsi Pumps.Caused by Inadequate Consideration of Required Operator Actions.Procedure Revised.With

05000414/LER-1986-005-03, :on 860417,discovered Leak Rate Retest Not Performed on Containment Isolation Valve Following Maint. Caused by Personnel Error.Personnel Counseled
type: Subject
page: https://kanterella.com/05000414/LER-2D1986-2D005-2D03-2C_-3Aon_860417-2Cdiscovered_Leak_Rate_Retest_Not_Performed_on_Containment_Isolation_Valve_Following_Maint._Caused_by_Personnel_Error.Personnel_Co…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1986-005-03, :on 860417,discovered Leak Rate Retest Not Performed on Containment Isolation Valve Following Maint. Caused by Personnel Error.Personnel Counseled

LER-1986-014, :on 860418,determined That During Discharge of 3,000 Gallon Waste Tank,Water from 4,500 Gallon Waste Tank Also Pumped.Caused by Open Suction Valve Leading to Operating Waste Transfer Pump.Valve Closed
type: Subject
label: 05000409/LER-1986-014, :on 860418,determined That During Discharge of 3,000 Gallon Waste Tank,Water from 4,500 Gallon Waste Tank Also Pumped.Caused by Open Suction Valve Leading to Operating Waste Transfer Pump.Valve Closed
page: https://kanterella.com/05000409/LER-2D1986-2D014-2C_-3Aon_860418-2Cdetermined_That_During_Discharge_of_3-2C000_Gallon_Waste_Tank-2CWater_from_4-2C500_Gallon_Waste_Tank_Also_Pumped.Caused_by_Open_Sucti…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1986-014, :on 860418,determined That During Discharge of 3,000 Gallon Waste Tank,Water from 4,500 Gallon Waste Tank Also Pumped.Caused by Open Suction Valve Leading to Operating Waste Transfer Pump.Valve Closed

05000369/LER-1987-004-03, :on 870218,reactor Tripped Due to Low RCS Flow. Caused by Failed Surge Capacitor Resulting in Reactor Coolant Pump Motor 1C Tripping on Ground Fault.Surge Capacitor Replaced
type: Subject
page: https://kanterella.com/05000369/LER-2D1987-2D004-2D03-2C_-3Aon_870218-2Creactor_Tripped_Due_to_Low_RCS_Flow._Caused_by_Failed_Surge_Capacitor_Resulting_in_Reactor_Coolant_Pump_Motor_1C_Tripping_on_Gro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1987-004-03, :on 870218,reactor Tripped Due to Low RCS Flow. Caused by Failed Surge Capacitor Resulting in Reactor Coolant Pump Motor 1C Tripping on Ground Fault.Surge Capacitor Replaced

05000413/LER-1985-059, :on 851010-12,reactor Shut Down Due to RCS Leakage in Excess of 1 Gpm.Caused by Leaking Compression Tube Fitting on Flow Transmitter.Fitting Tightened
type: Subject
page: https://kanterella.com/05000413/LER-2D1985-2D059-2C_-3Aon_851010-2D12-2Creactor_Shut_Down_Due_to_RCS_Leakage_in_Excess_of_1_Gpm.Caused_by_Leaking_Compression_Tube_Fitting_on_Flow_Transmitter.Fitting_T…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-059, :on 851010-12,reactor Shut Down Due to RCS Leakage in Excess of 1 Gpm.Caused by Leaking Compression Tube Fitting on Flow Transmitter.Fitting Tightened

LER-1987-004-02, :on 870217,discovered That Analog Channel Operational Test on Containment Hydrogen Analyzer 2B Not Performed at Required Intervals.Caused by Personnel Error. Periodic Test Scheduling Procedures Revised
type: Subject
label: 05000370/LER-1987-004-02, :on 870217,discovered That Analog Channel Operational Test on Containment Hydrogen Analyzer 2B Not Performed at Required Intervals.Caused by Personnel Error. Periodic Test Scheduling Procedures Revised
page: https://kanterella.com/05000370/LER-2D1987-2D004-2D02-2C_-3Aon_870217-2Cdiscovered_That_Analog_Channel_Operational_Test_on_Containment_Hydrogen_Analyzer_2B_Not_Performed_at_Required_Intervals.Caused_b…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1987-004-02, :on 870217,discovered That Analog Channel Operational Test on Containment Hydrogen Analyzer 2B Not Performed at Required Intervals.Caused by Personnel Error. Periodic Test Scheduling Procedures Revised

LER-1986-021, :on 860716,reactor Scram Occurred.Caused by Static Inverter 1A Transferring Alternate Source & Momentarily Deengergizing Scram Trains.Inverter Will Be Replaced Prior to Plant Startup
type: Subject
label: 05000409/LER-1986-021, :on 860716,reactor Scram Occurred.Caused by Static Inverter 1A Transferring Alternate Source & Momentarily Deengergizing Scram Trains.Inverter Will Be Replaced Prior to Plant Startup
page: https://kanterella.com/05000409/LER-2D1986-2D021-2C_-3Aon_860716-2Creactor_Scram_Occurred.Caused_by_Static_Inverter_1A_Transferring_Alternate_Source_-26_Momentarily_Deengergizing_Scram_Trains.Inverter…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1986-021, :on 860716,reactor Scram Occurred.Caused by Static Inverter 1A Transferring Alternate Source & Momentarily Deengergizing Scram Trains.Inverter Will Be Replaced Prior to Plant Startup

LER-1986-022, :on 860718,during Reactor Shutdown,Two Small Cracks Leaking Water on Decay Heat Suction Line Discovered. Cause Unknown.Pipe Section Removed & Replaced.Cracks Will Be Examined to Determine Cause
type: Subject
label: 05000409/LER-1986-022, :on 860718,during Reactor Shutdown,Two Small Cracks Leaking Water on Decay Heat Suction Line Discovered. Cause Unknown.Pipe Section Removed & Replaced.Cracks Will Be Examined to Determine Cause
page: https://kanterella.com/05000409/LER-2D1986-2D022-2C_-3Aon_860718-2Cduring_Reactor_Shutdown-2CTwo_Small_Cracks_Leaking_Water_on_Decay_Heat_Suction_Line_Discovered._Cause_Unknown.Pipe_Section_Removed_-2…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1986-022, :on 860718,during Reactor Shutdown,Two Small Cracks Leaking Water on Decay Heat Suction Line Discovered. Cause Unknown.Pipe Section Removed & Replaced.Cracks Will Be Examined to Determine Cause

05000382/LER-1986-015, :on 860714,loss of Shutdown Cooling Occurred. Caused by Simultaneous Use of Methods of Draining RCS & Inaccurate Level Indication.Procedures OP-1-003 & OP-901-046 Revised
type: Subject
page: https://kanterella.com/05000382/LER-2D1986-2D015-2C_-3Aon_860714-2Closs_of_Shutdown_Cooling_Occurred._Caused_by_Simultaneous_Use_of_Methods_of_Draining_RCS_-26_Inaccurate_Level_Indication.Procedures_O…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1986-015, :on 860714,loss of Shutdown Cooling Occurred. Caused by Simultaneous Use of Methods of Draining RCS & Inaccurate Level Indication.Procedures OP-1-003 & OP-901-046 Revised

Personnel
type: Subject
label: 05000369/LER-1985-027-01, :on 850911,pressurizer Heater Group 1B Inoperable While Diesel Generator 1A Inoperable.Caused by Personnel Error.Generator Returned to Operable.Rept Will Be Reviewed W/Personnel
page: https://kanterella.com/05000369/LER-2D1985-2D027-2D01-2C_-3Aon_850911-2Cpressurizer_Heater_Group_1B_Inoperable_While_Diesel_Generator_1A_Inoperable.Caused_by_Personnel_Error.Generator_Returned_to_Oper…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-027-01, :on 850911,pressurizer Heater Group 1B Inoperable While Diesel Generator 1A Inoperable.Caused by Personnel Error.Generator Returned to Operable.Rept Will Be Reviewed W/Personnel

05000443/LER-1987-005, :on 870214,panel Mounted Indicators Found Improperly Secured.Problems Occurred During Installation. Affected Indicators Properly Secured
type: Subject
page: https://kanterella.com/05000443/LER-2D1987-2D005-2C_-3Aon_870214-2Cpanel_Mounted_Indicators_Found_Improperly_Secured.Problems_Occurred_During_Installation._Affected_Indicators_Properly_Secured
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000443/LER-1987-005, :on 870214,panel Mounted Indicators Found Improperly Secured.Problems Occurred During Installation. Affected Indicators Properly Secured

LER-1999-002-03, :on 990225,discovered RCS Pressure Boundary Leakage on Two Inconel 600 Instrument Nozzles.Caused by Axial Cracks Near HAZ of Nozzle Partial Penetration Welds Resulting from Pwscc.Leaking Nozzles Have Been Repaired
type: Subject
label: 05000382/LER-1999-002-03, :on 990225,discovered RCS Pressure Boundary Leakage on Two Inconel 600 Instrument Nozzles.Caused by Axial Cracks Near HAZ of Nozzle Partial Penetration Welds Resulting from Pwscc.Leaking Nozzles Have Been Repaired
page: https://kanterella.com/05000382/LER-2D1999-2D002-2D03-2C_-3Aon_990225-2Cdiscovered_RCS_Pressure_Boundary_Leakage_on_Two_Inconel_600_Instrument_Nozzles.Caused_by_Axial_Cracks_Near_HAZ_of_Nozzle_Partial…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1999-002-03, :on 990225,discovered RCS Pressure Boundary Leakage on Two Inconel 600 Instrument Nozzles.Caused by Axial Cracks Near HAZ of Nozzle Partial Penetration Welds Resulting from Pwscc.Leaking Nozzles Have Been Repaired

Asme Section XI Accuracy & Range Requirements for Instruments Used for Pump Testing.Caused by Personnel Error.Instruments Calibr to Required Accuracy
type: Subject
label: 05000327/LER-1986-028, :on 860702,discovered Failure to Comply W/Asme Section XI Accuracy & Range Requirements for Instruments Used for Pump Testing.Caused by Personnel Error.Instruments Calibr to Required Accuracy
page: https://kanterella.com/05000327/LER-2D1986-2D028-2C_-3Aon_860702-2Cdiscovered_Failure_to_Comply_W/Asme_Section_XI_Accuracy_-26_Range_Requirements_for_Instruments_Used_for_Pump_Testing.Caused_by_Person…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1986-028, :on 860702,discovered Failure to Comply W/Asme Section XI Accuracy & Range Requirements for Instruments Used for Pump Testing.Caused by Personnel Error.Instruments Calibr to Required Accuracy

LER-1985-021, :on 850313,during Performance of Turbine Driven Auxiliary Feedwater Pump Operability Test,Discovered CA Pump 1 Had Failed 850309 Operability Test.Caused by Personnel Error.Test Completed
type: Subject
label: 05000413/LER-1985-021, :on 850313,during Performance of Turbine Driven Auxiliary Feedwater Pump Operability Test,Discovered CA Pump 1 Had Failed 850309 Operability Test.Caused by Personnel Error.Test Completed
page: https://kanterella.com/05000413/LER-2D1985-2D021-2C_-3Aon_850313-2Cduring_Performance_of_Turbine_Driven_Auxiliary_Feedwater_Pump_Operability_Test-2CDiscovered_CA_Pump_1_Had_Failed_850309_Operability_T…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-021, :on 850313,during Performance of Turbine Driven Auxiliary Feedwater Pump Operability Test,Discovered CA Pump 1 Had Failed 850309 Operability Test.Caused by Personnel Error.Test Completed

LER-1986-008, :860401,monthly Channel Check for Steam Generator narrow-range Level Shutdown Instrumentation Not Properly Performed on SI-3 Logs.Caused by SI-3 Incorrectly Written for wide-range Level Instruments
type: Subject
label: 05000327/LER-1986-008, :860401,monthly Channel Check for Steam Generator narrow-range Level Shutdown Instrumentation Not Properly Performed on SI-3 Logs.Caused by SI-3 Incorrectly Written for wide-range Level Instruments
page: https://kanterella.com/05000327/LER-2D1986-2D008-2C_-3A860401-2Cmonthly_Channel_Check_for_Steam_Generator_narrow-2Drange_Level_Shutdown_Instrumentation_Not_Properly_Performed_on_SI-2D3_Logs.Caused_by_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1986-008, :860401,monthly Channel Check for Steam Generator narrow-range Level Shutdown Instrumentation Not Properly Performed on SI-3 Logs.Caused by SI-3 Incorrectly Written for wide-range Level Instruments

LER-1986-010, :on 860404,containment Ventilation Valves Closed When Containment Bldg Gas Monitor Failed High.Cause Not Found.Troubleshooting Performed on Instrument Drawer Detected No Problems
type: Subject
label: 05000409/LER-1986-010, :on 860404,containment Ventilation Valves Closed When Containment Bldg Gas Monitor Failed High.Cause Not Found.Troubleshooting Performed on Instrument Drawer Detected No Problems
page: https://kanterella.com/05000409/LER-2D1986-2D010-2C_-3Aon_860404-2Ccontainment_Ventilation_Valves_Closed_When_Containment_Bldg_Gas_Monitor_Failed_High.Cause_Not_Found.Troubleshooting_Performed_on_Inst…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1986-010, :on 860404,containment Ventilation Valves Closed When Containment Bldg Gas Monitor Failed High.Cause Not Found.Troubleshooting Performed on Instrument Drawer Detected No Problems

LER-1986-042, :on 860908,two Tech Spec Surveillance Requirements Not Performed.Caused by Inadequate Procedures. SI-129 Revised to Require Less than 1,700 Psi & Westinghouse cross-calibr Procedure Implemented
type: Subject
label: 05000327/LER-1986-042, :on 860908,two Tech Spec Surveillance Requirements Not Performed.Caused by Inadequate Procedures. SI-129 Revised to Require Less than 1,700 Psi & Westinghouse cross-calibr Procedure Implemented
page: https://kanterella.com/05000327/LER-2D1986-2D042-2C_-3Aon_860908-2Ctwo_Tech_Spec_Surveillance_Requirements_Not_Performed.Caused_by_Inadequate_Procedures._SI-2D129_Revised_to_Require_Less_than_1-2C700_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1986-042, :on 860908,two Tech Spec Surveillance Requirements Not Performed.Caused by Inadequate Procedures. SI-129 Revised to Require Less than 1,700 Psi & Westinghouse cross-calibr Procedure Implemented

LER-1986-011-01, :on 860328,review of Tech Spec Surveillance Noted That Setpoint for Containment Sump Level in Error as Listed in Limiting Condition for Operation 3.3.2.1.Caused by Error in Instrument Mounting Drawing
type: Subject
label: 05000327/LER-1986-011-01, :on 860328,review of Tech Spec Surveillance Noted That Setpoint for Containment Sump Level in Error as Listed in Limiting Condition for Operation 3.3.2.1.Caused by Error in Instrument Mounting Drawing
page: https://kanterella.com/05000327/LER-2D1986-2D011-2D01-2C_-3Aon_860328-2Creview_of_Tech_Spec_Surveillance_Noted_That_Setpoint_for_Containment_Sump_Level_in_Error_as_Listed_in_Limiting_Condition_for_Ope…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1986-011-01, :on 860328,review of Tech Spec Surveillance Noted That Setpoint for Containment Sump Level in Error as Listed in Limiting Condition for Operation 3.3.2.1.Caused by Error in Instrument Mounting Drawing

LER-1986-057, :on 860903,containment Isolation Valves Not Deactivated in Closed Position.Caused by Failure of Nonconformance Rept Program to Require Routing of Environ Qualification Deficiencies to Control Room.Program Revised
type: Subject
label: 05000440/LER-1986-057, :on 860903,containment Isolation Valves Not Deactivated in Closed Position.Caused by Failure of Nonconformance Rept Program to Require Routing of Environ Qualification Deficiencies to Control Room.Program Revised
page: https://kanterella.com/05000440/LER-2D1986-2D057-2C_-3Aon_860903-2Ccontainment_Isolation_Valves_Not_Deactivated_in_Closed_Position.Caused_by_Failure_of_Nonconformance_Rept_Program_to_Require_Routing_o…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000440/LER-1986-057, :on 860903,containment Isolation Valves Not Deactivated in Closed Position.Caused by Failure of Nonconformance Rept Program to Require Routing of Environ Qualification Deficiencies to Control Room.Program Revised

LER-1986-008, :on 860403,spurious Low Reactor Water Level Signal Received.Caused by Mistakenly Deenergized Electric Distribution Panel During Troubleshooting of Instrumentation Problem.Sys Restored to Normal
type: Subject
label: 05000409/LER-1986-008, :on 860403,spurious Low Reactor Water Level Signal Received.Caused by Mistakenly Deenergized Electric Distribution Panel During Troubleshooting of Instrumentation Problem.Sys Restored to Normal
page: https://kanterella.com/05000409/LER-2D1986-2D008-2C_-3Aon_860403-2Cspurious_Low_Reactor_Water_Level_Signal_Received.Caused_by_Mistakenly_Deenergized_Electric_Distribution_Panel_During_Troubleshooting_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1986-008, :on 860403,spurious Low Reactor Water Level Signal Received.Caused by Mistakenly Deenergized Electric Distribution Panel During Troubleshooting of Instrumentation Problem.Sys Restored to Normal

LER-1986-019-01, :on 860731,discovered That During Calibr of Waste Gas Hydrogen Analyzer,Improper Gas Mixture Used to Check Accuracy of Analyzer Following 860703 Calibr.Caused by Personnel Error.Calibr of Analyzer Performed
type: Subject
label: 05000315/LER-1986-019-01, :on 860731,discovered That During Calibr of Waste Gas Hydrogen Analyzer,Improper Gas Mixture Used to Check Accuracy of Analyzer Following 860703 Calibr.Caused by Personnel Error.Calibr of Analyzer Performed
page: https://kanterella.com/05000315/LER-2D1986-2D019-2D01-2C_-3Aon_860731-2Cdiscovered_That_During_Calibr_of_Waste_Gas_Hydrogen_Analyzer-2CImproper_Gas_Mixture_Used_to_Check_Accuracy_of_Analyzer_Following…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000315/LER-1986-019-01, :on 860731,discovered That During Calibr of Waste Gas Hydrogen Analyzer,Improper Gas Mixture Used to Check Accuracy of Analyzer Following 860703 Calibr.Caused by Personnel Error.Calibr of Analyzer Performed

LER-1986-003-02, :on 860728,unit Tripped & All Train a Safeguards Equipment Actuated During Check of Test Lights on Safeguards Test Panel.Caused by Mistakenly Resetting Train a Safety Injection
type: Subject
label: 05000306/LER-1986-003-02, :on 860728,unit Tripped & All Train a Safeguards Equipment Actuated During Check of Test Lights on Safeguards Test Panel.Caused by Mistakenly Resetting Train a Safety Injection
page: https://kanterella.com/05000306/LER-2D1986-2D003-2D02-2C_-3Aon_860728-2Cunit_Tripped_-26_All_Train_a_Safeguards_Equipment_Actuated_During_Check_of_Test_Lights_on_Safeguards_Test_Panel.Caused_by_Mistak…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000306/LER-1986-003-02, :on 860728,unit Tripped & All Train a Safeguards Equipment Actuated During Check of Test Lights on Safeguards Test Panel.Caused by Mistakenly Resetting Train a Safety Injection

LER-1986-018, :on 860717,determined That Control Room Did Not Implement Compensatory Fire Protection Measures When Smoke Detectors Disabled for Welding Operations.Caused by Communication Problems.Memo Issued
type: Subject
label: 05000312/LER-1986-018, :on 860717,determined That Control Room Did Not Implement Compensatory Fire Protection Measures When Smoke Detectors Disabled for Welding Operations.Caused by Communication Problems.Memo Issued
page: https://kanterella.com/05000312/LER-2D1986-2D018-2C_-3Aon_860717-2Cdetermined_That_Control_Room_Did_Not_Implement_Compensatory_Fire_Protection_Measures_When_Smoke_Detectors_Disabled_for_Welding_Operat…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000312/LER-1986-018, :on 860717,determined That Control Room Did Not Implement Compensatory Fire Protection Measures When Smoke Detectors Disabled for Welding Operations.Caused by Communication Problems.Memo Issued

LER-1986-025, :on 860701,review of Tech Spec 3.3.3.8 Revealed Four Differences Between Installed Fire Detection Zones & Operability Requirements.Caused by Personnel Error.Fire Watch Established
type: Subject
label: 05000346/LER-1986-025, :on 860701,review of Tech Spec 3.3.3.8 Revealed Four Differences Between Installed Fire Detection Zones & Operability Requirements.Caused by Personnel Error.Fire Watch Established
page: https://kanterella.com/05000346/LER-2D1986-2D025-2C_-3Aon_860701-2Creview_of_Tech_Spec_3.3.3.8_Revealed_Four_Differences_Between_Installed_Fire_Detection_Zones_-26_Operability_Requirements.Caused_by_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000346/LER-1986-025, :on 860701,review of Tech Spec 3.3.3.8 Revealed Four Differences Between Installed Fire Detection Zones & Operability Requirements.Caused by Personnel Error.Fire Watch Established

05000413/LER-1986-018, :on 860324,both Trains of Auxiliary Feedwater Sys Inoperable for Over 6 H.Caused by Personnel Error, Resulting in Removal of Train B from Svc While Train a Inoperable
type: Subject
page: https://kanterella.com/05000413/LER-2D1986-2D018-2C_-3Aon_860324-2Cboth_Trains_of_Auxiliary_Feedwater_Sys_Inoperable_for_Over_6_H.Caused_by_Personnel_Error-2C_Resulting_in_Removal_of_Train_B_from_Svc_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1986-018, :on 860324,both Trains of Auxiliary Feedwater Sys Inoperable for Over 6 H.Caused by Personnel Error, Resulting in Removal of Train B from Svc While Train a Inoperable

LER-1998-002, :on 980109,electrical Govenor (EG-A) Failed on a Edg.Caused by Inadequate post-refurbishment Bench Testing by Vendor.Vendor,Engine Sys,Inc Was Notified. Repaired & Tested EG-A,per 10CFR21
type: Subject
label: 05000395/LER-1998-002, :on 980109,electrical Govenor (EG-A) Failed on a Edg.Caused by Inadequate post-refurbishment Bench Testing by Vendor.Vendor,Engine Sys,Inc Was Notified. Repaired & Tested EG-A,per 10CFR21
page: https://kanterella.com/05000395/LER-2D1998-2D002-2C_-3Aon_980109-2Celectrical_Govenor_-28EG-2DA-29_Failed_on_a_Edg.Caused_by_Inadequate_post-2Drefurbishment_Bench_Testing_by_Vendor.Vendor-2CEngine_Sys…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000395/LER-1998-002, :on 980109,electrical Govenor (EG-A) Failed on a Edg.Caused by Inadequate post-refurbishment Bench Testing by Vendor.Vendor,Engine Sys,Inc Was Notified. Repaired & Tested EG-A,per 10CFR21

LER-1997-022-03, :on 971114,determined That Ssps Logic Testing Had Not Been Performed.Caused by Inadequate Testing Design. Added New Testing Criteria to Ssps bi-monthly Surveillance Procedures & Successfully Performed Testing
type: Subject
label: 05000454/LER-1997-022-03, :on 971114,determined That Ssps Logic Testing Had Not Been Performed.Caused by Inadequate Testing Design. Added New Testing Criteria to Ssps bi-monthly Surveillance Procedures & Successfully Performed Testing
page: https://kanterella.com/05000454/LER-2D1997-2D022-2D03-2C_-3Aon_971114-2Cdetermined_That_Ssps_Logic_Testing_Had_Not_Been_Performed.Caused_by_Inadequate_Testing_Design._Added_New_Testing_Criteria_to_Ssp…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000454/LER-1997-022-03, :on 971114,determined That Ssps Logic Testing Had Not Been Performed.Caused by Inadequate Testing Design. Added New Testing Criteria to Ssps bi-monthly Surveillance Procedures & Successfully Performed Testing

05000413/LER-1986-028, :on 860606,unidentified RCS Leakage Exceeded Tech Spec Limit of 1 Gpm.Caused by Seal 2 Becoming Unseated. Reactor Coolant Drain Tank Level Transmitter Recalibr & Seal 2 Reseated
type: Subject
page: https://kanterella.com/05000413/LER-2D1986-2D028-2C_-3Aon_860606-2Cunidentified_RCS_Leakage_Exceeded_Tech_Spec_Limit_of_1_Gpm.Caused_by_Seal_2_Becoming_Unseated._Reactor_Coolant_Drain_Tank_Level_Trans…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1986-028, :on 860606,unidentified RCS Leakage Exceeded Tech Spec Limit of 1 Gpm.Caused by Seal 2 Becoming Unseated. Reactor Coolant Drain Tank Level Transmitter Recalibr & Seal 2 Reseated

05000338/LER-1986-010-01, :on 860603,diesel-driven Fire Pump Determined Inoperable During Performance of Weekly Surveillance Test. Caused by Failed Starter Motor.Replacement Starter Motor Installed
type: Subject
page: https://kanterella.com/05000338/LER-2D1986-2D010-2D01-2C_-3Aon_860603-2Cdiesel-2Ddriven_Fire_Pump_Determined_Inoperable_During_Performance_of_Weekly_Surveillance_Test._Caused_by_Failed_Starter_Motor.R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000338/LER-1986-010-01, :on 860603,diesel-driven Fire Pump Determined Inoperable During Performance of Weekly Surveillance Test. Caused by Failed Starter Motor.Replacement Starter Motor Installed

LER-1998-002, :on 980107,fire Hose Station & Room Sprinkler Sys Were Noted out-of-service.Caused by Operating Mislabeled Valve.Correct Tagout Boundary Was Established & Verified by Addl Complete Walkdown of Tagout
type: Subject
label: 05000317/LER-1998-002, :on 980107,fire Hose Station & Room Sprinkler Sys Were Noted out-of-service.Caused by Operating Mislabeled Valve.Correct Tagout Boundary Was Established & Verified by Addl Complete Walkdown of Tagout
page: https://kanterella.com/05000317/LER-2D1998-2D002-2C_-3Aon_980107-2Cfire_Hose_Station_-26_Room_Sprinkler_Sys_Were_Noted_out-2Dof-2Dservice.Caused_by_Operating_Mislabeled_Valve.Correct_Tagout_Boundary_W…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000317/LER-1998-002, :on 980107,fire Hose Station & Room Sprinkler Sys Were Noted out-of-service.Caused by Operating Mislabeled Valve.Correct Tagout Boundary Was Established & Verified by Addl Complete Walkdown of Tagout

05000220/LER-1986-014, :on 860603,reactor Scram Occurred During Surveillance Test.Caused by Instantaneous Inlet of Water in Transmitter RE-16B.Surveillance Test Will Be Revised & Technicians Cautioned
type: Subject
page: https://kanterella.com/05000220/LER-2D1986-2D014-2C_-3Aon_860603-2Creactor_Scram_Occurred_During_Surveillance_Test.Caused_by_Instantaneous_Inlet_of_Water_in_Transmitter_RE-2D16B.Surveillance_Test_Will…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000220/LER-1986-014, :on 860603,reactor Scram Occurred During Surveillance Test.Caused by Instantaneous Inlet of Water in Transmitter RE-16B.Surveillance Test Will Be Revised & Technicians Cautioned

LER-1986-003-01, :on 860516,evaluation of Fire Dampers in Response to IE Info Notice 83-69 Defined 20 Fire Dampers Improperly Installed or Rated for Fire Zones.Fire Patrols Established.Fire Dampers Will Be Changed
type: Subject
label: 05000336/LER-1986-003-01, :on 860516,evaluation of Fire Dampers in Response to IE Info Notice 83-69 Defined 20 Fire Dampers Improperly Installed or Rated for Fire Zones.Fire Patrols Established.Fire Dampers Will Be Changed
page: https://kanterella.com/05000336/LER-2D1986-2D003-2D01-2C_-3Aon_860516-2Cevaluation_of_Fire_Dampers_in_Response_to_IE_Info_Notice_83-2D69_Defined_20_Fire_Dampers_Improperly_Installed_or_Rated_for_Fire_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000336/LER-1986-003-01, :on 860516,evaluation of Fire Dampers in Response to IE Info Notice 83-69 Defined 20 Fire Dampers Improperly Installed or Rated for Fire Zones.Fire Patrols Established.Fire Dampers Will Be Changed

05000382/LER-1997-025, :on 971017,gag for Valve CC-835B Was Partially Engaged Restricting Valve to Approx 80% Open.Caused by Inadequate Work Instructions.Gag Was Completely Disengaged on Valve CC-835B
type: Subject
page: https://kanterella.com/05000382/LER-2D1997-2D025-2C_-3Aon_971017-2Cgag_for_Valve_CC-2D835B_Was_Partially_Engaged_Restricting_Valve_to_Approx_80-_Open.Caused_by_Inadequate_Work_Instructions.Gag_Was_Com…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1997-025, :on 971017,gag for Valve CC-835B Was Partially Engaged Restricting Valve to Approx 80% Open.Caused by Inadequate Work Instructions.Gag Was Completely Disengaged on Valve CC-835B

LER-1997-012-01, :on 971009,chemical & Volume Control Sys Malfunction,Occurred.Caused by Failure to Recognize Shutdown Margin Requirements in Usar.Procedures Modified to Maintain Increased Shutdown Margin
type: Subject
label: 05000282/LER-1997-012-01, :on 971009,chemical & Volume Control Sys Malfunction,Occurred.Caused by Failure to Recognize Shutdown Margin Requirements in Usar.Procedures Modified to Maintain Increased Shutdown Margin
page: https://kanterella.com/05000282/LER-2D1997-2D012-2D01-2C_-3Aon_971009-2Cchemical_-26_Volume_Control_Sys_Malfunction-2COccurred.Caused_by_Failure_to_Recognize_Shutdown_Margin_Requirements_in_Usar.Proce…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000282/LER-1997-012-01, :on 971009,chemical & Volume Control Sys Malfunction,Occurred.Caused by Failure to Recognize Shutdown Margin Requirements in Usar.Procedures Modified to Maintain Increased Shutdown Margin

LER-1997-012-01, :on 971214,drywell Personnel Airlock Outer Door Seals Local Leak Rate Test Was Not Properly Performed.Caused by Inattention to Detail on Part of Mechanic Who Installed Label.Removed Incorrect Label
type: Subject
label: 05000333/LER-1997-012-01, :on 971214,drywell Personnel Airlock Outer Door Seals Local Leak Rate Test Was Not Properly Performed.Caused by Inattention to Detail on Part of Mechanic Who Installed Label.Removed Incorrect Label
page: https://kanterella.com/05000333/LER-2D1997-2D012-2D01-2C_-3Aon_971214-2Cdrywell_Personnel_Airlock_Outer_Door_Seals_Local_Leak_Rate_Test_Was_Not_Properly_Performed.Caused_by_Inattention_to_Detail_on_Pa…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000333/LER-1997-012-01, :on 971214,drywell Personnel Airlock Outer Door Seals Local Leak Rate Test Was Not Properly Performed.Caused by Inattention to Detail on Part of Mechanic Who Installed Label.Removed Incorrect Label

05000354/LER-1997-033, :on 971210,failure to Perform Secondary Containment Isolation Actuation Instrumention Channel Checks,Was Noted.Caused by Personnel Error.Personnel Involved Was Held Accountable
type: Subject
page: https://kanterella.com/05000354/LER-2D1997-2D033-2C_-3Aon_971210-2Cfailure_to_Perform_Secondary_Containment_Isolation_Actuation_Instrumention_Channel_Checks-2CWas_Noted.Caused_by_Personnel_Error.Perso…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000354/LER-1997-033, :on 971210,failure to Perform Secondary Containment Isolation Actuation Instrumention Channel Checks,Was Noted.Caused by Personnel Error.Personnel Involved Was Held Accountable

LER-1997-003-08, :on 971010,reactor Trip Occurred,Due to age-related Failures of Redundant Power Supplies That Went Undetected by Alarm Sys.Modification to Power Supply Failure Alarm Will Be Submitted to TRC for Review
type: Subject
label: 05000455/LER-1997-003-08, :on 971010,reactor Trip Occurred,Due to age-related Failures of Redundant Power Supplies That Went Undetected by Alarm Sys.Modification to Power Supply Failure Alarm Will Be Submitted to TRC for Review
page: https://kanterella.com/05000455/LER-2D1997-2D003-2D08-2C_-3Aon_971010-2Creactor_Trip_Occurred-2CDue_to_age-2Drelated_Failures_of_Redundant_Power_Supplies_That_Went_Undetected_by_Alarm_Sys.Modification…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000455/LER-1997-003-08, :on 971010,reactor Trip Occurred,Due to age-related Failures of Redundant Power Supplies That Went Undetected by Alarm Sys.Modification to Power Supply Failure Alarm Will Be Submitted to TRC for Review

LER-1997-006-02, :on 971121,release of Contaminated Liquid Outside of Controlled Access Area Was Noted.Caused by Lack of Administrative Control of Hydrolazing Inside Controlled Access Area.Secured & Cleaned Spill Area
type: Subject
label: 05000416/LER-1997-006-02, :on 971121,release of Contaminated Liquid Outside of Controlled Access Area Was Noted.Caused by Lack of Administrative Control of Hydrolazing Inside Controlled Access Area.Secured & Cleaned Spill Area
page: https://kanterella.com/05000416/LER-2D1997-2D006-2D02-2C_-3Aon_971121-2Crelease_of_Contaminated_Liquid_Outside_of_Controlled_Access_Area_Was_Noted.Caused_by_Lack_of_Administrative_Control_of_Hydrolazi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000416/LER-1997-006-02, :on 971121,release of Contaminated Liquid Outside of Controlled Access Area Was Noted.Caused by Lack of Administrative Control of Hydrolazing Inside Controlled Access Area.Secured & Cleaned Spill Area

LER-1986-002-05, :on 860413,containment Air Release & Addition Sys Release Terminated by Actuation of High Radiation Alarm. Caused by Generic Electrical Noise from Vacuum Switches. Alarm Reset.Grab Sample Taken
type: Subject
label: 05000414/LER-1986-002-05, :on 860413,containment Air Release & Addition Sys Release Terminated by Actuation of High Radiation Alarm. Caused by Generic Electrical Noise from Vacuum Switches. Alarm Reset.Grab Sample Taken
page: https://kanterella.com/05000414/LER-2D1986-2D002-2D05-2C_-3Aon_860413-2Ccontainment_Air_Release_-26_Addition_Sys_Release_Terminated_by_Actuation_of_High_Radiation_Alarm._Caused_by_Generic_Electrical_N…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1986-002-05, :on 860413,containment Air Release & Addition Sys Release Terminated by Actuation of High Radiation Alarm. Caused by Generic Electrical Noise from Vacuum Switches. Alarm Reset.Grab Sample Taken

O Being Electrically or Hydraulically Disarmed,Violating Tech Specs. Caused by Personnel Error.Training Provided
type: Subject
label: 05000440/LER-1986-065, :on 860930,control Rod Movements Performed While Rod 30-27 Bypassed in Rod Action Control Sys W/O Being Electrically or Hydraulically Disarmed,Violating Tech Specs. Caused by Personnel Error.Training Provided
page: https://kanterella.com/05000440/LER-2D1986-2D065-2C_-3Aon_860930-2Ccontrol_Rod_Movements_Performed_While_Rod_30-2D27_Bypassed_in_Rod_Action_Control_Sys_W/O_Being_Electrically_or_Hydraulically_Disarmed…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000440/LER-1986-065, :on 860930,control Rod Movements Performed While Rod 30-27 Bypassed in Rod Action Control Sys W/O Being Electrically or Hydraulically Disarmed,Violating Tech Specs. Caused by Personnel Error.Training Provided

Crew
type: Subject
label: 05000413/LER-1986-052, :on 860923,hourly Fire Watches Missed for Floor Hatches to Seal Water Injection 1A & 1B Filters.Caused by Personnel Error.Required Hourly Fire Watches Subsequently Performed & Incident Discussed W/Crew
page: https://kanterella.com/05000413/LER-2D1986-2D052-2C_-3Aon_860923-2Chourly_Fire_Watches_Missed_for_Floor_Hatches_to_Seal_Water_Injection_1A_-26_1B_Filters.Caused_by_Personnel_Error.Required_Hourly_Fire…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1986-052, :on 860923,hourly Fire Watches Missed for Floor Hatches to Seal Water Injection 1A & 1B Filters.Caused by Personnel Error.Required Hourly Fire Watches Subsequently Performed & Incident Discussed W/Crew

LER-1986-013-02, :on 860927,unplanned ESF Actuations Occurred Due to Failed Relay in Refueling Zone Vent Exhaust Radiation Trip Logic.Caused by Burned Coil in GE Model CR120A Relay. Relay Replaced
type: Subject
label: 05000260/LER-1986-013-02, :on 860927,unplanned ESF Actuations Occurred Due to Failed Relay in Refueling Zone Vent Exhaust Radiation Trip Logic.Caused by Burned Coil in GE Model CR120A Relay. Relay Replaced
page: https://kanterella.com/05000260/LER-2D1986-2D013-2D02-2C_-3Aon_860927-2Cunplanned_ESF_Actuations_Occurred_Due_to_Failed_Relay_in_Refueling_Zone_Vent_Exhaust_Radiation_Trip_Logic.Caused_by_Burned_Coil_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000260/LER-1986-013-02, :on 860927,unplanned ESF Actuations Occurred Due to Failed Relay in Refueling Zone Vent Exhaust Radiation Trip Logic.Caused by Burned Coil in GE Model CR120A Relay. Relay Replaced

05000348/LER-1999-002-02, :on 990527,Unit 1 Reactor Trip Occurred Following Loss of 1A SG Feedwater Pump.Caused by Personnel Error.Unit Was Stabilized in Hot Standby.With
type: Subject
page: https://kanterella.com/05000348/LER-2D1999-2D002-2D02-2C_-3Aon_990527-2CUnit_1_Reactor_Trip_Occurred_Following_Loss_of_1A_SG_Feedwater_Pump.Caused_by_Personnel_Error.Unit_Was_Stabilized_in_Hot_Standby…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000348/LER-1999-002-02, :on 990527,Unit 1 Reactor Trip Occurred Following Loss of 1A SG Feedwater Pump.Caused by Personnel Error.Unit Was Stabilized in Hot Standby.With

LER-1988-002, :on 880129,temporary Absence of Duty Shift Supervisor from Shift.Scheduled Shift Supervisor Realized Absence & Assumed Duty Himself.Cause Unstated.Proper Shift Turnover Conducted
type: Subject
label: 05000409/LER-1988-002, :on 880129,temporary Absence of Duty Shift Supervisor from Shift.Scheduled Shift Supervisor Realized Absence & Assumed Duty Himself.Cause Unstated.Proper Shift Turnover Conducted
page: https://kanterella.com/05000409/LER-2D1988-2D002-2C_-3Aon_880129-2Ctemporary_Absence_of_Duty_Shift_Supervisor_from_Shift.Scheduled_Shift_Supervisor_Realized_Absence_-26_Assumed_Duty_Himself.Cause_Unst…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1988-002, :on 880129,temporary Absence of Duty Shift Supervisor from Shift.Scheduled Shift Supervisor Realized Absence & Assumed Duty Himself.Cause Unstated.Proper Shift Turnover Conducted

LER-1988-002, :on 880110,full Scram Inadvertently Initiated Via Alternate Rod Insertion Trip Sys.Caused by Personnel Error Due to Misleading Surveillance Test Procedure Wording. Procedure Revised & Rerun
type: Subject
label: 05000458/LER-1988-002, :on 880110,full Scram Inadvertently Initiated Via Alternate Rod Insertion Trip Sys.Caused by Personnel Error Due to Misleading Surveillance Test Procedure Wording. Procedure Revised & Rerun
page: https://kanterella.com/05000458/LER-2D1988-2D002-2C_-3Aon_880110-2Cfull_Scram_Inadvertently_Initiated_Via_Alternate_Rod_Insertion_Trip_Sys.Caused_by_Personnel_Error_Due_to_Misleading_Surveillance_Test…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000458/LER-1988-002, :on 880110,full Scram Inadvertently Initiated Via Alternate Rod Insertion Trip Sys.Caused by Personnel Error Due to Misleading Surveillance Test Procedure Wording. Procedure Revised & Rerun

LER-1988-012, :on 880526,steam Generator Blowdown Sampling Exceeded Required Periodicity of Tech Specs 3.3.3.1,Action 28.Caused by Personnel Error.Procedures Being Revised to Verify That Monitor Inservice & Sampling Done
type: Subject
label: 05000382/LER-1988-012, :on 880526,steam Generator Blowdown Sampling Exceeded Required Periodicity of Tech Specs 3.3.3.1,Action 28.Caused by Personnel Error.Procedures Being Revised to Verify That Monitor Inservice & Sampling Done
page: https://kanterella.com/05000382/LER-2D1988-2D012-2C_-3Aon_880526-2Csteam_Generator_Blowdown_Sampling_Exceeded_Required_Periodicity_of_Tech_Specs_3.3.3.1-2CAction_28.Caused_by_Personnel_Error.Procedure…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1988-012, :on 880526,steam Generator Blowdown Sampling Exceeded Required Periodicity of Tech Specs 3.3.3.1,Action 28.Caused by Personnel Error.Procedures Being Revised to Verify That Monitor Inservice & Sampling Done

LER-1988-009-02, :on 880520,reactor Scram Occurred When Three MSIVs Less than 90- Opened.Caused by Procedure Deficiency. Nitrogen to MSIVs Restored,Plant Procedures Temporarily Revised & Permanent Revs Scheduled
type: Subject
label: 05000321/LER-1988-009-02, :on 880520,reactor Scram Occurred When Three MSIVs Less than 90% Opened.Caused by Procedure Deficiency. Nitrogen to MSIVs Restored,Plant Procedures Temporarily Revised & Permanent Revs Scheduled
page: https://kanterella.com/05000321/LER-2D1988-2D009-2D02-2C_-3Aon_880520-2Creactor_Scram_Occurred_When_Three_MSIVs_Less_than_90-_Opened.Caused_by_Procedure_Deficiency._Nitrogen_to_MSIVs_Restored-2CPlant_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000321/LER-1988-009-02, :on 880520,reactor Scram Occurred When Three MSIVs Less than 90% Opened.Caused by Procedure Deficiency. Nitrogen to MSIVs Restored,Plant Procedures Temporarily Revised & Permanent Revs Scheduled

LER-1988-016, :on 880517,unexpected Actuation of Inboard Portion of Reactor Bldg Isolation Control Sys Occurred, Resulting in Closure of Train a Isolation Dampers.Caused by Personnel Error.Work Process Revised
type: Subject
label: 05000293/LER-1988-016, :on 880517,unexpected Actuation of Inboard Portion of Reactor Bldg Isolation Control Sys Occurred, Resulting in Closure of Train a Isolation Dampers.Caused by Personnel Error.Work Process Revised
page: https://kanterella.com/05000293/LER-2D1988-2D016-2C_-3Aon_880517-2Cunexpected_Actuation_of_Inboard_Portion_of_Reactor_Bldg_Isolation_Control_Sys_Occurred-2C_Resulting_in_Closure_of_Train_a_Isolation_D…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000293/LER-1988-016, :on 880517,unexpected Actuation of Inboard Portion of Reactor Bldg Isolation Control Sys Occurred, Resulting in Closure of Train a Isolation Dampers.Caused by Personnel Error.Work Process Revised

05000366/LER-1998-004-04, :on 981005,condition Prohibited by TS Was Noted.Caused by Personnel Error.Coached Involved Personnel & Briefed Other Technicians on Event.With
type: Subject
page: https://kanterella.com/05000366/LER-2D1998-2D004-2D04-2C_-3Aon_981005-2Ccondition_Prohibited_by_TS_Was_Noted.Caused_by_Personnel_Error.Coached_Involved_Personnel_-26_Briefed_Other_Technicians_on_Event…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000366/LER-1998-004-04, :on 981005,condition Prohibited by TS Was Noted.Caused by Personnel Error.Coached Involved Personnel & Briefed Other Technicians on Event.With

LER-1986-008, :on 860311,ESF Reactor Trip Signal Received Due to Control Power Wires Pulling Free from power-range Nuclear Instrument Drawer & Shorting Out.Caused by Faulty Electrical Connector & Mislabeled Doors
type: Subject
label: 05000316/LER-1986-008, :on 860311,ESF Reactor Trip Signal Received Due to Control Power Wires Pulling Free from power-range Nuclear Instrument Drawer & Shorting Out.Caused by Faulty Electrical Connector & Mislabeled Doors
page: https://kanterella.com/05000316/LER-2D1986-2D008-2C_-3Aon_860311-2CESF_Reactor_Trip_Signal_Received_Due_to_Control_Power_Wires_Pulling_Free_from_power-2Drange_Nuclear_Instrument_Drawer_-26_Shorting_Ou…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000316/LER-1986-008, :on 860311,ESF Reactor Trip Signal Received Due to Control Power Wires Pulling Free from power-range Nuclear Instrument Drawer & Shorting Out.Caused by Faulty Electrical Connector & Mislabeled Doors

LER-1988-014, :on 880511,determined That Effluent Sample Pump P-8-1A Taken Out of Svc for Maint on 880510 Rendering Svc Water Effluent Radiation Monitor R-18 Inoperable.Caused by Personnel Error.Instruction Written
type: Subject
label: 05000213/LER-1988-014, :on 880511,determined That Effluent Sample Pump P-8-1A Taken Out of Svc for Maint on 880510 Rendering Svc Water Effluent Radiation Monitor R-18 Inoperable.Caused by Personnel Error.Instruction Written
page: https://kanterella.com/05000213/LER-2D1988-2D014-2C_-3Aon_880511-2Cdetermined_That_Effluent_Sample_Pump_P-2D8-2D1A_Taken_Out_of_Svc_for_Maint_on_880510_Rendering_Svc_Water_Effluent_Radiation_Monitor_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000213/LER-1988-014, :on 880511,determined That Effluent Sample Pump P-8-1A Taken Out of Svc for Maint on 880510 Rendering Svc Water Effluent Radiation Monitor R-18 Inoperable.Caused by Personnel Error.Instruction Written

O Seismic Restraints Previously Installed Over safety-related Components.Also Reportable Per Part 21
type: Subject
label: 05000315/LER-1986-003-01, :on 860228,evaluation of Noncompliance Rept (NCR) RQA-86-03-1 Concluded Certain Fire Protection Piping W/O Seismic Restraints Previously Installed Over safety-related Components.Also Reportable Per Part 21
page: https://kanterella.com/05000315/LER-2D1986-2D003-2D01-2C_-3Aon_860228-2Cevaluation_of_Noncompliance_Rept_-28NCR-29_RQA-2D86-2D03-2D1_Concluded_Certain_Fire_Protection_Piping_W/O_Seismic_Restraints_Pre…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000315/LER-1986-003-01, :on 860228,evaluation of Noncompliance Rept (NCR) RQA-86-03-1 Concluded Certain Fire Protection Piping W/O Seismic Restraints Previously Installed Over safety-related Components.Also Reportable Per Part 21

LER-1986-004-01, :on 860115,reactor Manually Scrammed Due to Overheating of Phase Main Transformer B.Caused by Improper Alignment of Knife Switches to Transformer Cooling Loops. Knife Switches Corrected
type: Subject
label: 05000388/LER-1986-004-01, :on 860115,reactor Manually Scrammed Due to Overheating of Phase Main Transformer B.Caused by Improper Alignment of Knife Switches to Transformer Cooling Loops. Knife Switches Corrected
page: https://kanterella.com/05000388/LER-2D1986-2D004-2D01-2C_-3Aon_860115-2Creactor_Manually_Scrammed_Due_to_Overheating_of_Phase_Main_Transformer_B.Caused_by_Improper_Alignment_of_Knife_Switches_to_Trans…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000388/LER-1986-004-01, :on 860115,reactor Manually Scrammed Due to Overheating of Phase Main Transformer B.Caused by Improper Alignment of Knife Switches to Transformer Cooling Loops. Knife Switches Corrected

LER-1986-003-06, :on 860226,pumpdown of Drywell Equipment & Floor Drain Sumps Not Performed at Proper Interval.Caused by Operator Error & Equipment Malfunction.Horn Replaced & Operators Made Aware of Error
type: Subject
label: 05000237/LER-1986-003-06, :on 860226,pumpdown of Drywell Equipment & Floor Drain Sumps Not Performed at Proper Interval.Caused by Operator Error & Equipment Malfunction.Horn Replaced & Operators Made Aware of Error
page: https://kanterella.com/05000237/LER-2D1986-2D003-2D06-2C_-3Aon_860226-2Cpumpdown_of_Drywell_Equipment_-26_Floor_Drain_Sumps_Not_Performed_at_Proper_Interval.Caused_by_Operator_Error_-26_Equipment_Malf…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000237/LER-1986-003-06, :on 860226,pumpdown of Drywell Equipment & Floor Drain Sumps Not Performed at Proper Interval.Caused by Operator Error & Equipment Malfunction.Horn Replaced & Operators Made Aware of Error

LER-1988-017-01, :on 880424,main Feedwater Isolation Occurred Due to hi-hi Level Turbine Trip Signal from Steam Generator. Caused by Personnel Error.Steam Generator Levels Brought Under Control Using Auxiliary Feedwater
type: Subject
label: 05000414/LER-1988-017-01, :on 880424,main Feedwater Isolation Occurred Due to hi-hi Level Turbine Trip Signal from Steam Generator. Caused by Personnel Error.Steam Generator Levels Brought Under Control Using Auxiliary Feedwater
page: https://kanterella.com/05000414/LER-2D1988-2D017-2D01-2C_-3Aon_880424-2Cmain_Feedwater_Isolation_Occurred_Due_to_hi-2Dhi_Level_Turbine_Trip_Signal_from_Steam_Generator._Caused_by_Personnel_Error.Steam…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1988-017-01, :on 880424,main Feedwater Isolation Occurred Due to hi-hi Level Turbine Trip Signal from Steam Generator. Caused by Personnel Error.Steam Generator Levels Brought Under Control Using Auxiliary Feedwater

LER-1988-012, :on 880421,surveillance Requirements Not Met Due to Failure to Test Response Time of Isolation Actuation Instrumentation.Caused by Procedure Inadequacy.Special Purpose Procedures Developed & Performed
type: Subject
label: 05000366/LER-1988-012, :on 880421,surveillance Requirements Not Met Due to Failure to Test Response Time of Isolation Actuation Instrumentation.Caused by Procedure Inadequacy.Special Purpose Procedures Developed & Performed
page: https://kanterella.com/05000366/LER-2D1988-2D012-2C_-3Aon_880421-2Csurveillance_Requirements_Not_Met_Due_to_Failure_to_Test_Response_Time_of_Isolation_Actuation_Instrumentation.Caused_by_Procedure_Ina…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000366/LER-1988-012, :on 880421,surveillance Requirements Not Met Due to Failure to Test Response Time of Isolation Actuation Instrumentation.Caused by Procedure Inadequacy.Special Purpose Procedures Developed & Performed

LER-1988-013, :on 880415,during Performance of Functional Test Procedure to Return Hydrogen Recombiner to Svc,Failure to Test Piping Violated Primary Containment Integrity.Caused by Personnel Error.Isolation Valves Closed
type: Subject
label: 05000366/LER-1988-013, :on 880415,during Performance of Functional Test Procedure to Return Hydrogen Recombiner to Svc,Failure to Test Piping Violated Primary Containment Integrity.Caused by Personnel Error.Isolation Valves Closed
page: https://kanterella.com/05000366/LER-2D1988-2D013-2C_-3Aon_880415-2Cduring_Performance_of_Functional_Test_Procedure_to_Return_Hydrogen_Recombiner_to_Svc-2CFailure_to_Test_Piping_Violated_Primary_Contai…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000366/LER-1988-013, :on 880415,during Performance of Functional Test Procedure to Return Hydrogen Recombiner to Svc,Failure to Test Piping Violated Primary Containment Integrity.Caused by Personnel Error.Isolation Valves Closed

Involved Personnel
type: Subject
label: 05000321/LER-1988-002-01, :on 880410,reactor Protection Sys Actuation Occurred & Outboard Valves of Primary Containment Isolation Sys Valve Group 2 Isolated.Caused by Personnel Error.Event Reviewed W/Involved Personnel
page: https://kanterella.com/05000321/LER-2D1988-2D002-2D01-2C_-3Aon_880410-2Creactor_Protection_Sys_Actuation_Occurred_-26_Outboard_Valves_of_Primary_Containment_Isolation_Sys_Valve_Group_2_Isolated.Caused…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000321/LER-1988-002-01, :on 880410,reactor Protection Sys Actuation Occurred & Outboard Valves of Primary Containment Isolation Sys Valve Group 2 Isolated.Caused by Personnel Error.Event Reviewed W/Involved Personnel

Alternate Core Spray Diesel 1A Removed from Svc to Replace Weeping Cooling Water Pump Discharge Hose.Surveillance Test Conducted Following Hose Replacement
type: Subject
label: 05000409/LER-1986-005, :on 860124,high Pressure Svc Water/Alternate Core Spray Diesel 1A Removed from Svc to Replace Weeping Cooling Water Pump Discharge Hose.Surveillance Test Conducted Following Hose Replacement
page: https://kanterella.com/05000409/LER-2D1986-2D005-2C_-3Aon_860124-2Chigh_Pressure_Svc_Water/Alternate_Core_Spray_Diesel_1A_Removed_from_Svc_to_Replace_Weeping_Cooling_Water_Pump_Discharge_Hose.Surveill…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1986-005, :on 860124,high Pressure Svc Water/Alternate Core Spray Diesel 1A Removed from Svc to Replace Weeping Cooling Water Pump Discharge Hose.Surveillance Test Conducted Following Hose Replacement

LER-1988-016-02, :on 880310,sliding Links on Safety Cabinets Left in Open Position Due to Possible Personnel Error. Sliding Links Returned to Correct Positions & All Other Safety Cabinets Inspected
type: Subject
label: 05000413/LER-1988-016-02, :on 880310,sliding Links on Safety Cabinets Left in Open Position Due to Possible Personnel Error. Sliding Links Returned to Correct Positions & All Other Safety Cabinets Inspected
page: https://kanterella.com/05000413/LER-2D1988-2D016-2D02-2C_-3Aon_880310-2Csliding_Links_on_Safety_Cabinets_Left_in_Open_Position_Due_to_Possible_Personnel_Error._Sliding_Links_Returned_to_Correct_Positi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1988-016-02, :on 880310,sliding Links on Safety Cabinets Left in Open Position Due to Possible Personnel Error. Sliding Links Returned to Correct Positions & All Other Safety Cabinets Inspected

LER-1988-005, :on 880321,blown Undervoltage Circuit Fuse Replacement Results in Tech Spec 3.0.3 Entry.Caused by Inadvertent Shortening of Two Wire Connections.Change to Tech Spec Being Pursued to Correct Deficiency
type: Subject
label: 05000382/LER-1988-005, :on 880321,blown Undervoltage Circuit Fuse Replacement Results in Tech Spec 3.0.3 Entry.Caused by Inadvertent Shortening of Two Wire Connections.Change to Tech Spec Being Pursued to Correct Deficiency
page: https://kanterella.com/05000382/LER-2D1988-2D005-2C_-3Aon_880321-2Cblown_Undervoltage_Circuit_Fuse_Replacement_Results_in_Tech_Spec_3.0.3_Entry.Caused_by_Inadvertent_Shortening_of_Two_Wire_Connections…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1988-005, :on 880321,blown Undervoltage Circuit Fuse Replacement Results in Tech Spec 3.0.3 Entry.Caused by Inadvertent Shortening of Two Wire Connections.Change to Tech Spec Being Pursued to Correct Deficiency

LER-1987-029, :on 870402,failure to Meet Safety to Nonsafety Electrical Distribution Separation Criteria Discovered. Caused by Cognitive Personnel Error in Developing Design Changes.Sys Expert to Review Design Changes
type: Subject
label: 05000382/LER-1987-029, :on 870402,failure to Meet Safety to Nonsafety Electrical Distribution Separation Criteria Discovered. Caused by Cognitive Personnel Error in Developing Design Changes.Sys Expert to Review Design Changes
page: https://kanterella.com/05000382/LER-2D1987-2D029-2C_-3Aon_870402-2Cfailure_to_Meet_Safety_to_Nonsafety_Electrical_Distribution_Separation_Criteria_Discovered._Caused_by_Cognitive_Personnel_Error_in_De…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1987-029, :on 870402,failure to Meet Safety to Nonsafety Electrical Distribution Separation Criteria Discovered. Caused by Cognitive Personnel Error in Developing Design Changes.Sys Expert to Review Design Changes

LER-1988-001, :on 880126,procedure Inadequacy Discovered That Could Allow Insufficient Load Testing of Emergency Generators.Caused by Inadequate Procedure Review.Procedure Change Notice Prepared & Test Completed
type: Subject
label: 05000029/LER-1988-001, :on 880126,procedure Inadequacy Discovered That Could Allow Insufficient Load Testing of Emergency Generators.Caused by Inadequate Procedure Review.Procedure Change Notice Prepared & Test Completed
page: https://kanterella.com/05000029/LER-2D1988-2D001-2C_-3Aon_880126-2Cprocedure_Inadequacy_Discovered_That_Could_Allow_Insufficient_Load_Testing_of_Emergency_Generators.Caused_by_Inadequate_Procedure_Rev…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000029/LER-1988-001, :on 880126,procedure Inadequacy Discovered That Could Allow Insufficient Load Testing of Emergency Generators.Caused by Inadequate Procedure Review.Procedure Change Notice Prepared & Test Completed

LER-1988-015, :on 880613,plant Shutdown Required Due to Leakage Past Reactor Coolant Loop Drain Valves.Caused by Inadequate Hand Closing One of Drain Valves.Valves Will Be Evaluated & Corrective Action Recommended
type: Subject
label: 05000382/LER-1988-015, :on 880613,plant Shutdown Required Due to Leakage Past Reactor Coolant Loop Drain Valves.Caused by Inadequate Hand Closing One of Drain Valves.Valves Will Be Evaluated & Corrective Action Recommended
page: https://kanterella.com/05000382/LER-2D1988-2D015-2C_-3Aon_880613-2Cplant_Shutdown_Required_Due_to_Leakage_Past_Reactor_Coolant_Loop_Drain_Valves.Caused_by_Inadequate_Hand_Closing_One_of_Drain_Valves.V…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1988-015, :on 880613,plant Shutdown Required Due to Leakage Past Reactor Coolant Loop Drain Valves.Caused by Inadequate Hand Closing One of Drain Valves.Valves Will Be Evaluated & Corrective Action Recommended

LER-1988-009, :on 880206,Limitorque Valve Actuator T-drains Found Painted Over or Missing on 27 Valves.Caused by Lack of Communication & Mgt Deficiency.Painters Will Receive Periodic Retraining.Drains Repaired
type: Subject
label: 05000413/LER-1988-009, :on 880206,Limitorque Valve Actuator T-drains Found Painted Over or Missing on 27 Valves.Caused by Lack of Communication & Mgt Deficiency.Painters Will Receive Periodic Retraining.Drains Repaired
page: https://kanterella.com/05000413/LER-2D1988-2D009-2C_-3Aon_880206-2CLimitorque_Valve_Actuator_T-2Ddrains_Found_Painted_Over_or_Missing_on_27_Valves.Caused_by_Lack_of_Communication_-26_Mgt_Deficiency.Pa…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1988-009, :on 880206,Limitorque Valve Actuator T-drains Found Painted Over or Missing on 27 Valves.Caused by Lack of Communication & Mgt Deficiency.Painters Will Receive Periodic Retraining.Drains Repaired

LER-1997-009, :on 970619,potential Loss of Remote Shutdown Capability Occurred Due to Fire Induced Damage.Caused by Inadequate Design Basis Documentation.Operations Memo Provided Evacuation Criteria
type: Subject
label: 05000285/LER-1997-009, :on 970619,potential Loss of Remote Shutdown Capability Occurred Due to Fire Induced Damage.Caused by Inadequate Design Basis Documentation.Operations Memo Provided Evacuation Criteria
page: https://kanterella.com/05000285/LER-2D1997-2D009-2C_-3Aon_970619-2Cpotential_Loss_of_Remote_Shutdown_Capability_Occurred_Due_to_Fire_Induced_Damage.Caused_by_Inadequate_Design_Basis_Documentation.Oper…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1997-009, :on 970619,potential Loss of Remote Shutdown Capability Occurred Due to Fire Induced Damage.Caused by Inadequate Design Basis Documentation.Operations Memo Provided Evacuation Criteria

10CFR.Manual Revised
type: Subject
label: 05000285/LER-1997-008, :on 970616,improper Shift Staffing Due to Inadequate Control of Respirator Spectacle Kits Occurred. Caused by Program for Obtaining Corrective Lenses Inadequate to Ensure Compliance w/10CFR.Manual Revised
page: https://kanterella.com/05000285/LER-2D1997-2D008-2C_-3Aon_970616-2Cimproper_Shift_Staffing_Due_to_Inadequate_Control_of_Respirator_Spectacle_Kits_Occurred._Caused_by_Program_for_Obtaining_Corrective_L…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1997-008, :on 970616,improper Shift Staffing Due to Inadequate Control of Respirator Spectacle Kits Occurred. Caused by Program for Obtaining Corrective Lenses Inadequate to Ensure Compliance w/10CFR.Manual Revised

05000269/LER-1987-012, :on 871203,discovered Exam Frequency of Reactor Coolant Pump Flywheels Exceeded Requirement of Tech Spec 4.2.3.Caused by QA Deficiency.Inservice Insp Plan Revised
type: Subject
page: https://kanterella.com/05000269/LER-2D1987-2D012-2C_-3Aon_871203-2Cdiscovered_Exam_Frequency_of_Reactor_Coolant_Pump_Flywheels_Exceeded_Requirement_of_Tech_Spec_4.2.3.Caused_by_QA_Deficiency.Inservice…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1987-012, :on 871203,discovered Exam Frequency of Reactor Coolant Pump Flywheels Exceeded Requirement of Tech Spec 4.2.3.Caused by QA Deficiency.Inservice Insp Plan Revised

Operator
type: Subject
label: 05000267/LER-1987-031, :on 871225,hot Reheat Temp High Scram Occurred. Caused by Operator Inattention to Plant Conditions.Reactor Returned to Power on 871227 & Consequences of Inattention to Plant Parameters Reviewed W/Operator
page: https://kanterella.com/05000267/LER-2D1987-2D031-2C_-3Aon_871225-2Chot_Reheat_Temp_High_Scram_Occurred._Caused_by_Operator_Inattention_to_Plant_Conditions.Reactor_Returned_to_Power_on_871227_-26_Conse…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000267/LER-1987-031, :on 871225,hot Reheat Temp High Scram Occurred. Caused by Operator Inattention to Plant Conditions.Reactor Returned to Power on 871227 & Consequences of Inattention to Plant Parameters Reviewed W/Operator

LER-1987-046, :on 871219,main Feedwater CF Isolation Occurred During Removal of Temporary Station Mod (Tsm) from Solid State Protection Sys.Caused by Mgt Deficiency.Tsm Removed & CF Sys Returned to Alignment
type: Subject
label: 05000413/LER-1987-046, :on 871219,main Feedwater CF Isolation Occurred During Removal of Temporary Station Mod (Tsm) from Solid State Protection Sys.Caused by Mgt Deficiency.Tsm Removed & CF Sys Returned to Alignment
page: https://kanterella.com/05000413/LER-2D1987-2D046-2C_-3Aon_871219-2Cmain_Feedwater_CF_Isolation_Occurred_During_Removal_of_Temporary_Station_Mod_-28Tsm-29_from_Solid_State_Protection_Sys.Caused_by_Mgt_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1987-046, :on 871219,main Feedwater CF Isolation Occurred During Removal of Temporary Station Mod (Tsm) from Solid State Protection Sys.Caused by Mgt Deficiency.Tsm Removed & CF Sys Returned to Alignment

LER-1987-031-02, :on 871221,discovered No Performance Retest Conducted on Diesel Generator 2B Starting Air Inlet Valves Repaired on 871119.Caused by Personnel Error.Retest Satisfactorily Completed
type: Subject
label: 05000414/LER-1987-031-02, :on 871221,discovered No Performance Retest Conducted on Diesel Generator 2B Starting Air Inlet Valves Repaired on 871119.Caused by Personnel Error.Retest Satisfactorily Completed
page: https://kanterella.com/05000414/LER-2D1987-2D031-2D02-2C_-3Aon_871221-2Cdiscovered_No_Performance_Retest_Conducted_on_Diesel_Generator_2B_Starting_Air_Inlet_Valves_Repaired_on_871119.Caused_by_Personn…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1987-031-02, :on 871221,discovered No Performance Retest Conducted on Diesel Generator 2B Starting Air Inlet Valves Repaired on 871119.Caused by Personnel Error.Retest Satisfactorily Completed

LER-1988-008-01, :on 880224,Tech Spec Violation Due to Implementation of Inadequate Compensatory Measures.Caused by Mgt Deficiency.Monitoring Instrumentation Returned to Svc Before Reduction in Reactor Temp Initiated
type: Subject
label: 05000414/LER-1988-008-01, :on 880224,Tech Spec Violation Due to Implementation of Inadequate Compensatory Measures.Caused by Mgt Deficiency.Monitoring Instrumentation Returned to Svc Before Reduction in Reactor Temp Initiated
page: https://kanterella.com/05000414/LER-2D1988-2D008-2D01-2C_-3Aon_880224-2CTech_Spec_Violation_Due_to_Implementation_of_Inadequate_Compensatory_Measures.Caused_by_Mgt_Deficiency.Monitoring_Instrumentatio…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1988-008-01, :on 880224,Tech Spec Violation Due to Implementation of Inadequate Compensatory Measures.Caused by Mgt Deficiency.Monitoring Instrumentation Returned to Svc Before Reduction in Reactor Temp Initiated

LER-1988-003, :on 880107,Tech Spec 3.3.3.1,Action Statement 35 Exceeded.Caused by Radiation Monitor 1A Being Inoperable for More than 72 H Due to Ion Chamber Problems.Grab Samples Taken & Ion Chamber & Tube Replaced
type: Subject
label: 05000338/LER-1988-003, :on 880107,Tech Spec 3.3.3.1,Action Statement 35 Exceeded.Caused by Radiation Monitor 1A Being Inoperable for More than 72 H Due to Ion Chamber Problems.Grab Samples Taken & Ion Chamber & Tube Replaced
page: https://kanterella.com/05000338/LER-2D1988-2D003-2C_-3Aon_880107-2CTech_Spec_3.3.3.1-2CAction_Statement_35_Exceeded.Caused_by_Radiation_Monitor_1A_Being_Inoperable_for_More_than_72_H_Due_to_Ion_Chambe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000338/LER-1988-003, :on 880107,Tech Spec 3.3.3.1,Action Statement 35 Exceeded.Caused by Radiation Monitor 1A Being Inoperable for More than 72 H Due to Ion Chamber Problems.Grab Samples Taken & Ion Chamber & Tube Replaced

LER-1988-002-01, :on 880301,reactor Scrammed During Performance of Procedure GP-11.E, Reactor Protection Sys (RPS) - Scram Reset. Caused by Operator Error.Operator Counseled Re Importance of Attention to Detail
type: Subject
label: 05000277/LER-1988-002-01, :on 880301,reactor Scrammed During Performance of Procedure GP-11.E, Reactor Protection Sys (RPS) - Scram Reset. Caused by Operator Error.Operator Counseled Re Importance of Attention to Detail
page: https://kanterella.com/05000277/LER-2D1988-2D002-2D01-2C_-3Aon_880301-2Creactor_Scrammed_During_Performance_of_Procedure_GP-2D11.E-2C_Reactor_Protection_Sys_-28RPS-29_-2D_Scram_Reset._Caused_by_Operat…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000277/LER-1988-002-01, :on 880301,reactor Scrammed During Performance of Procedure GP-11.E, Reactor Protection Sys (RPS) - Scram Reset. Caused by Operator Error.Operator Counseled Re Importance of Attention to Detail

05000366/LER-1988-002, :on 880219,surveillance Requirements of Tech Specs Not Met.Caused by Personnel Error.Special Purpose Procedures Developed & Surveillances Performed or Scheduled
type: Subject
page: https://kanterella.com/05000366/LER-2D1988-2D002-2C_-3Aon_880219-2Csurveillance_Requirements_of_Tech_Specs_Not_Met.Caused_by_Personnel_Error.Special_Purpose_Procedures_Developed_-26_Surveillances_Perf…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000366/LER-1988-002, :on 880219,surveillance Requirements of Tech Specs Not Met.Caused by Personnel Error.Special Purpose Procedures Developed & Surveillances Performed or Scheduled

General Ofc QA Personnel.Nuts Tested Per NRC Bulletin 87-002
type: Subject
label: 05000413/LER-1988-011, :on 880126,nuts Received W/O Proper Charpy Impact Testing Documentation.Caused by Mfg Deficiency & Personnel Error.Incident Reviewed W/General Ofc QA Personnel.Nuts Tested Per NRC Bulletin 87-002
page: https://kanterella.com/05000413/LER-2D1988-2D011-2C_-3Aon_880126-2Cnuts_Received_W/O_Proper_Charpy_Impact_Testing_Documentation.Caused_by_Mfg_Deficiency_-26_Personnel_Error.Incident_Reviewed_W/General…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1988-011, :on 880126,nuts Received W/O Proper Charpy Impact Testing Documentation.Caused by Mfg Deficiency & Personnel Error.Incident Reviewed W/General Ofc QA Personnel.Nuts Tested Per NRC Bulletin 87-002

05000293/LER-1987-020, :on 871217,fire Damper CPR-2 Failed to Close. Caused by Clover Hook Catching on Edge of Damper Blade.Hooks Changed So Open Side of Hook Faces Away from Damper Blades
type: Subject
page: https://kanterella.com/05000293/LER-2D1987-2D020-2C_-3Aon_871217-2Cfire_Damper_CPR-2D2_Failed_to_Close._Caused_by_Clover_Hook_Catching_on_Edge_of_Damper_Blade.Hooks_Changed_So_Open_Side_of_Hook_Faces_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000293/LER-1987-020, :on 871217,fire Damper CPR-2 Failed to Close. Caused by Clover Hook Catching on Edge of Damper Blade.Hooks Changed So Open Side of Hook Faces Away from Damper Blades

05000328/LER-1988-003-02, :on 880119,discovered Ice Buildup in Flow Passages of Ice Condenser Due to Sublimation.Cause Not Determined.Ice Condenser Defrosted & Special Maint Instruction Performed
type: Subject
page: https://kanterella.com/05000328/LER-2D1988-2D003-2D02-2C_-3Aon_880119-2Cdiscovered_Ice_Buildup_in_Flow_Passages_of_Ice_Condenser_Due_to_Sublimation.Cause_Not_Determined.Ice_Condenser_Defrosted_-26_Spe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1988-003-02, :on 880119,discovered Ice Buildup in Flow Passages of Ice Condenser Due to Sublimation.Cause Not Determined.Ice Condenser Defrosted & Special Maint Instruction Performed

LER-1997-004, :on 970505,DG Was Outside Design Basis Due to Violation of App R.Mod Was Completed on 970507 to Provide Ability to Isolate CR Located Tachometer from DG-2 Speed Sensing Circuit Prior to Reaching 300 Degrees
type: Subject
label: 05000285/LER-1997-004, :on 970505,DG Was Outside Design Basis Due to Violation of App R.Mod Was Completed on 970507 to Provide Ability to Isolate CR Located Tachometer from DG-2 Speed Sensing Circuit Prior to Reaching 300 Degrees
page: https://kanterella.com/05000285/LER-2D1997-2D004-2C_-3Aon_970505-2CDG_Was_Outside_Design_Basis_Due_to_Violation_of_App_R.Mod_Was_Completed_on_970507_to_Provide_Ability_to_Isolate_CR_Located_Tachometer…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1997-004, :on 970505,DG Was Outside Design Basis Due to Violation of App R.Mod Was Completed on 970507 to Provide Ability to Isolate CR Located Tachometer from DG-2 Speed Sensing Circuit Prior to Reaching 300 Degrees

LER-1986-004-03, :on 860321,during Maint,Esf Actuation Occurred Immediately Following Attempts to Remove Broken Drill Bit from Control Board.Cause Undetermined.Incident Will Be Reviewed as Supplementary Personnel Training
type: Subject
label: 05000370/LER-1986-004-03, :on 860321,during Maint,Esf Actuation Occurred Immediately Following Attempts to Remove Broken Drill Bit from Control Board.Cause Undetermined.Incident Will Be Reviewed as Supplementary Personnel Training
page: https://kanterella.com/05000370/LER-2D1986-2D004-2D03-2C_-3Aon_860321-2Cduring_Maint-2CEsf_Actuation_Occurred_Immediately_Following_Attempts_to_Remove_Broken_Drill_Bit_from_Control_Board.Cause_Undeter…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1986-004-03, :on 860321,during Maint,Esf Actuation Occurred Immediately Following Attempts to Remove Broken Drill Bit from Control Board.Cause Undetermined.Incident Will Be Reviewed as Supplementary Personnel Training

05000414/LER-1997-004-03, :on 970424,inadequate Test of Containment Isolation Valve Identified.Caused by Inadequate Work Practices.Personnel Involved Counseled Re Improved Performance
type: Subject
page: https://kanterella.com/05000414/LER-2D1997-2D004-2D03-2C_-3Aon_970424-2Cinadequate_Test_of_Containment_Isolation_Valve_Identified.Caused_by_Inadequate_Work_Practices.Personnel_Involved_Counseled_Re_Im…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1997-004-03, :on 970424,inadequate Test of Containment Isolation Valve Identified.Caused by Inadequate Work Practices.Personnel Involved Counseled Re Improved Performance

05000315/LER-1985-043, :Corrective Actions & Preventive Measures Taken Re Discrepancies in Process Sensor Calibr Completed,Per Confirmatory Action Ltr Issued on 850820
type: Subject
page: https://kanterella.com/05000315/LER-2D1985-2D043-2C_-3ACorrective_Actions_-26_Preventive_Measures_Taken_Re_Discrepancies_in_Process_Sensor_Calibr_Completed-2CPer_Confirmatory_Action_Ltr_Issued_on_8508…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000315/LER-1985-043, :Corrective Actions & Preventive Measures Taken Re Discrepancies in Process Sensor Calibr Completed,Per Confirmatory Action Ltr Issued on 850820

05000458/LER-1997-002-03, :on 970506,small Leak at Inlet of Vent Valve for RRS FCV B.Root Cause Is Undetermined.Valve Was Replaced Prior to Returning to Power Operations
type: Subject
page: https://kanterella.com/05000458/LER-2D1997-2D002-2D03-2C_-3Aon_970506-2Csmall_Leak_at_Inlet_of_Vent_Valve_for_RRS_FCV_B.Root_Cause_Is_Undetermined.Valve_Was_Replaced_Prior_to_Returning_to_Power_Operat…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000458/LER-1997-002-03, :on 970506,small Leak at Inlet of Vent Valve for RRS FCV B.Root Cause Is Undetermined.Valve Was Replaced Prior to Returning to Power Operations

LER-1985-026-01, :on 851224,480-volt Power Supply Breaker to Backup Group 4A Pressurizer Heaters Discovered to Have No Light Indication.Caused by Backing Off Action by Arcing Contacts.Breaker Manually Tripped
type: Subject
label: 05000251/LER-1985-026-01, :on 851224,480-volt Power Supply Breaker to Backup Group 4A Pressurizer Heaters Discovered to Have No Light Indication.Caused by Backing Off Action by Arcing Contacts.Breaker Manually Tripped
page: https://kanterella.com/05000251/LER-2D1985-2D026-2D01-2C_-3Aon_851224-2C480-2Dvolt_Power_Supply_Breaker_to_Backup_Group_4A_Pressurizer_Heaters_Discovered_to_Have_No_Light_Indication.Caused_by_Backing_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000251/LER-1985-026-01, :on 851224,480-volt Power Supply Breaker to Backup Group 4A Pressurizer Heaters Discovered to Have No Light Indication.Caused by Backing Off Action by Arcing Contacts.Breaker Manually Tripped

LER-1986-005, :on 860207,during Insp Exit Interview, Determined That Containment Sump Isolation Valves 1NI-184B & 1NI-185A Not Visually Inspected at Least Once to Verify Remote Position Indication
type: Subject
label: 05000369/LER-1986-005, :on 860207,during Insp Exit Interview, Determined That Containment Sump Isolation Valves 1NI-184B & 1NI-185A Not Visually Inspected at Least Once to Verify Remote Position Indication
page: https://kanterella.com/05000369/LER-2D1986-2D005-2C_-3Aon_860207-2Cduring_Insp_Exit_Interview-2C_Determined_That_Containment_Sump_Isolation_Valves_1NI-2D184B_-26_1NI-2D185A_Not_Visually_Inspected_at_L…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1986-005, :on 860207,during Insp Exit Interview, Determined That Containment Sump Isolation Valves 1NI-184B & 1NI-185A Not Visually Inspected at Least Once to Verify Remote Position Indication

LER-1985-058, :on 851008,hourly Fire Watches for Nine Fire Detection Zones Performed Approx 30 Minutes Late.Caused by Lack of Formalized Program to Document Post Assignments or Changes in Assignments.Patrols Performed
type: Subject
label: 05000413/LER-1985-058, :on 851008,hourly Fire Watches for Nine Fire Detection Zones Performed Approx 30 Minutes Late.Caused by Lack of Formalized Program to Document Post Assignments or Changes in Assignments.Patrols Performed
page: https://kanterella.com/05000413/LER-2D1985-2D058-2C_-3Aon_851008-2Chourly_Fire_Watches_for_Nine_Fire_Detection_Zones_Performed_Approx_30_Minutes_Late.Caused_by_Lack_of_Formalized_Program_to_Document_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-058, :on 851008,hourly Fire Watches for Nine Fire Detection Zones Performed Approx 30 Minutes Late.Caused by Lack of Formalized Program to Document Post Assignments or Changes in Assignments.Patrols Performed

LER-1997-002, :on 970129,potential Inability of Startup Feedwater Block Valves to Fully Close Following Main Steam Line Break Occurred Due to MOV Program Weakness.Increased Torque Switch Settings on Valve Operators
type: Subject
label: 05000289/LER-1997-002, :on 970129,potential Inability of Startup Feedwater Block Valves to Fully Close Following Main Steam Line Break Occurred Due to MOV Program Weakness.Increased Torque Switch Settings on Valve Operators
page: https://kanterella.com/05000289/LER-2D1997-2D002-2C_-3Aon_970129-2Cpotential_Inability_of_Startup_Feedwater_Block_Valves_to_Fully_Close_Following_Main_Steam_Line_Break_Occurred_Due_to_MOV_Program_Weak…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000289/LER-1997-002, :on 970129,potential Inability of Startup Feedwater Block Valves to Fully Close Following Main Steam Line Break Occurred Due to MOV Program Weakness.Increased Torque Switch Settings on Valve Operators

05000250/LER-1985-032, :on 851015,at 100% Power,Main Transformer Relay Actuated,Resulting in Electrical Generator Trip & Turbine Trip.Probably Caused by Jarring of Relays by Const Personnel
type: Subject
page: https://kanterella.com/05000250/LER-2D1985-2D032-2C_-3Aon_851015-2Cat_100-_Power-2CMain_Transformer_Relay_Actuated-2CResulting_in_Electrical_Generator_Trip_-26_Turbine_Trip.Probably_Caused_by_Jarring_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000250/LER-1985-032, :on 851015,at 100% Power,Main Transformer Relay Actuated,Resulting in Electrical Generator Trip & Turbine Trip.Probably Caused by Jarring of Relays by Const Personnel

LER-1985-021-01, :on 850722,two Automatic Initiations of Auxiliary Feedwater Sys Occurred Due to Bypass Feedwater Control Valves Malfunctioning.Caused by Moisture in Instrument Air.Actuators Inspected & Cleaned
type: Subject
label: 05000250/LER-1985-021-01, :on 850722,two Automatic Initiations of Auxiliary Feedwater Sys Occurred Due to Bypass Feedwater Control Valves Malfunctioning.Caused by Moisture in Instrument Air.Actuators Inspected & Cleaned
page: https://kanterella.com/05000250/LER-2D1985-2D021-2D01-2C_-3Aon_850722-2Ctwo_Automatic_Initiations_of_Auxiliary_Feedwater_Sys_Occurred_Due_to_Bypass_Feedwater_Control_Valves_Malfunctioning.Caused_by_Mo…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000250/LER-1985-021-01, :on 850722,two Automatic Initiations of Auxiliary Feedwater Sys Occurred Due to Bypass Feedwater Control Valves Malfunctioning.Caused by Moisture in Instrument Air.Actuators Inspected & Cleaned

05000275/LER-1985-036, :on 851119,discovered That Safety Injection & Charging Pump Suction Crosstie Valve Surveillances Not Performed Since 850814.Caused by Personnel Error.Test Performed
type: Subject
page: https://kanterella.com/05000275/LER-2D1985-2D036-2C_-3Aon_851119-2Cdiscovered_That_Safety_Injection_-26_Charging_Pump_Suction_Crosstie_Valve_Surveillances_Not_Performed_Since_850814.Caused_by_Personne…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000275/LER-1985-036, :on 851119,discovered That Safety Injection & Charging Pump Suction Crosstie Valve Surveillances Not Performed Since 850814.Caused by Personnel Error.Test Performed

LER-1985-029, :on 850821,containment Sump Level wide-range Channel Check Not Performed.Caused by Failure to Incorporate Requirement Into Surveillance Test Procedure (STP) I-1D. Requirement Incorporated.Test Performed
type: Subject
label: 05000275/LER-1985-029, :on 850821,containment Sump Level wide-range Channel Check Not Performed.Caused by Failure to Incorporate Requirement Into Surveillance Test Procedure (STP) I-1D. Requirement Incorporated.Test Performed
page: https://kanterella.com/05000275/LER-2D1985-2D029-2C_-3Aon_850821-2Ccontainment_Sump_Level_wide-2Drange_Channel_Check_Not_Performed.Caused_by_Failure_to_Incorporate_Requirement_Into_Surveillance_Test_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000275/LER-1985-029, :on 850821,containment Sump Level wide-range Channel Check Not Performed.Caused by Failure to Incorporate Requirement Into Surveillance Test Procedure (STP) I-1D. Requirement Incorporated.Test Performed

LER-1985-029-01, :on 851001,Westinghouse Notified Util That Reanalysis of Peak Containment Pressure Calculation Resulted in Greater Value than Internal Pressure of 15 Psig.Emergency Procedure for Nd Spray Initiation Revised
type: Subject
label: 05000369/LER-1985-029-01, :on 851001,Westinghouse Notified Util That Reanalysis of Peak Containment Pressure Calculation Resulted in Greater Value than Internal Pressure of 15 Psig.Emergency Procedure for Nd Spray Initiation Revised
page: https://kanterella.com/05000369/LER-2D1985-2D029-2D01-2C_-3Aon_851001-2CWestinghouse_Notified_Util_That_Reanalysis_of_Peak_Containment_Pressure_Calculation_Resulted_in_Greater_Value_than_Internal_Pres…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-029-01, :on 851001,Westinghouse Notified Util That Reanalysis of Peak Containment Pressure Calculation Resulted in Greater Value than Internal Pressure of 15 Psig.Emergency Procedure for Nd Spray Initiation Revised

LER-1985-046-01, :on 851118,annulus Fire Hose Stations Found Isolated.Caused by Unit Operator 851114 Erroneous Isolation of Header After Inadvertent Opening of Containment High Pressure Fire Protection Valve.Header Restored
type: Subject
label: 05000327/LER-1985-046-01, :on 851118,annulus Fire Hose Stations Found Isolated.Caused by Unit Operator 851114 Erroneous Isolation of Header After Inadvertent Opening of Containment High Pressure Fire Protection Valve.Header Restored
page: https://kanterella.com/05000327/LER-2D1985-2D046-2D01-2C_-3Aon_851118-2Cannulus_Fire_Hose_Stations_Found_Isolated.Caused_by_Unit_Operator_851114_Erroneous_Isolation_of_Header_After_Inadvertent_Opening…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1985-046-01, :on 851118,annulus Fire Hose Stations Found Isolated.Caused by Unit Operator 851114 Erroneous Isolation of Header After Inadvertent Opening of Containment High Pressure Fire Protection Valve.Header Restored

LER-1997-001-01, :on 970401,refueling Machine Overload Protective Circuitry Was Inoperable Due to Failure to Correctly Translate Refueling Machine Circuitry Design Into Ts.Mod to Overload Bypass Was Installed
type: Subject
label: 05000318/LER-1997-001-01, :on 970401,refueling Machine Overload Protective Circuitry Was Inoperable Due to Failure to Correctly Translate Refueling Machine Circuitry Design Into Ts.Mod to Overload Bypass Was Installed
page: https://kanterella.com/05000318/LER-2D1997-2D001-2D01-2C_-3Aon_970401-2Crefueling_Machine_Overload_Protective_Circuitry_Was_Inoperable_Due_to_Failure_to_Correctly_Translate_Refueling_Machine_Circuitry…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000318/LER-1997-001-01, :on 970401,refueling Machine Overload Protective Circuitry Was Inoperable Due to Failure to Correctly Translate Refueling Machine Circuitry Design Into Ts.Mod to Overload Bypass Was Installed

05000366/LER-1997-005-01, :on 970402,unplanned Automatic Engineered Safety Feature Actuation Occurred Due to Personnel Error. Emergency Bus 2F Was Returned to Svc on 970402
type: Subject
page: https://kanterella.com/05000366/LER-2D1997-2D005-2D01-2C_-3Aon_970402-2Cunplanned_Automatic_Engineered_Safety_Feature_Actuation_Occurred_Due_to_Personnel_Error._Emergency_Bus_2F_Was_Returned_to_Svc_on…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000366/LER-1997-005-01, :on 970402,unplanned Automatic Engineered Safety Feature Actuation Occurred Due to Personnel Error. Emergency Bus 2F Was Returned to Svc on 970402

LER-1985-028, :on 851110 & 21,during Coastdown,High Steam Flow (Hsf) Reactor Trips Occurred Due to Automatic Reactor Protection Sys Initiation.Caused by Communication Between Hsf Channels 1,2 & 4.Loop 3 Solenoids Replaced
type: Subject
label: 05000213/LER-1985-028, :on 851110 & 21,during Coastdown,High Steam Flow (Hsf) Reactor Trips Occurred Due to Automatic Reactor Protection Sys Initiation.Caused by Communication Between Hsf Channels 1,2 & 4.Loop 3 Solenoids Replaced
page: https://kanterella.com/05000213/LER-2D1985-2D028-2C_-3Aon_851110_-26_21-2Cduring_Coastdown-2CHigh_Steam_Flow_-28Hsf-29_Reactor_Trips_Occurred_Due_to_Automatic_Reactor_Protection_Sys_Initiation.Caused_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000213/LER-1985-028, :on 851110 & 21,during Coastdown,High Steam Flow (Hsf) Reactor Trips Occurred Due to Automatic Reactor Protection Sys Initiation.Caused by Communication Between Hsf Channels 1,2 & 4.Loop 3 Solenoids Replaced

LER-1997-003-02, :on 970328,excessive Leakage Identified on Secondary Bypass Valves Was Caused by Undersized Valve Operators & Inappropriate Valve & Operator Orientation. Re-routed Piping Containing Valves
type: Subject
label: 05000366/LER-1997-003-02, :on 970328,excessive Leakage Identified on Secondary Bypass Valves Was Caused by Undersized Valve Operators & Inappropriate Valve & Operator Orientation. Re-routed Piping Containing Valves
page: https://kanterella.com/05000366/LER-2D1997-2D003-2D02-2C_-3Aon_970328-2Cexcessive_Leakage_Identified_on_Secondary_Bypass_Valves_Was_Caused_by_Undersized_Valve_Operators_-26_Inappropriate_Valve_-26_Ope…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000366/LER-1997-003-02, :on 970328,excessive Leakage Identified on Secondary Bypass Valves Was Caused by Undersized Valve Operators & Inappropriate Valve & Operator Orientation. Re-routed Piping Containing Valves

LER-1985-032, :on 850912,QA Insp Disclosed Absence of Nuts on Embedded Plate for Main Feedwater Piping Snubber Support. Caused by Const & Engineering Misunderstandings of Design Details.Nuts Installed & Plate Stiffened
type: Subject
label: 05000275/LER-1985-032, :on 850912,QA Insp Disclosed Absence of Nuts on Embedded Plate for Main Feedwater Piping Snubber Support. Caused by Const & Engineering Misunderstandings of Design Details.Nuts Installed & Plate Stiffened
page: https://kanterella.com/05000275/LER-2D1985-2D032-2C_-3Aon_850912-2CQA_Insp_Disclosed_Absence_of_Nuts_on_Embedded_Plate_for_Main_Feedwater_Piping_Snubber_Support._Caused_by_Const_-26_Engineering_Misund…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000275/LER-1985-032, :on 850912,QA Insp Disclosed Absence of Nuts on Embedded Plate for Main Feedwater Piping Snubber Support. Caused by Const & Engineering Misunderstandings of Design Details.Nuts Installed & Plate Stiffened

05000270/LER-1986-002-03, :on 860204,reactor Tripped on Flux/Flow Imbalance When Safety Control Rod Dropped in Core.Caused by Personnel Error.Crd Dc Breakers Reset & Procedures Will Be Changed
type: Subject
page: https://kanterella.com/05000270/LER-2D1986-2D002-2D03-2C_-3Aon_860204-2Creactor_Tripped_on_Flux/Flow_Imbalance_When_Safety_Control_Rod_Dropped_in_Core.Caused_by_Personnel_Error.Crd_Dc_Breakers_Reset_-…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000270/LER-1986-002-03, :on 860204,reactor Tripped on Flux/Flow Imbalance When Safety Control Rod Dropped in Core.Caused by Personnel Error.Crd Dc Breakers Reset & Procedures Will Be Changed

LER-1997-004, :on 970319,failed to Fully Test 4160 Volt Bus Undervoltage Logic Circuitry by Surveillance Procedures. Caused by Not Recognizing That Failure in One Actuation Scheme.Affected Logic Circuitry Was Tested
type: Subject
label: 05000498/LER-1997-004, :on 970319,failed to Fully Test 4160 Volt Bus Undervoltage Logic Circuitry by Surveillance Procedures. Caused by Not Recognizing That Failure in One Actuation Scheme.Affected Logic Circuitry Was Tested
page: https://kanterella.com/05000498/LER-2D1997-2D004-2C_-3Aon_970319-2Cfailed_to_Fully_Test_4160_Volt_Bus_Undervoltage_Logic_Circuitry_by_Surveillance_Procedures._Caused_by_Not_Recognizing_That_Failure_in…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000498/LER-1997-004, :on 970319,failed to Fully Test 4160 Volt Bus Undervoltage Logic Circuitry by Surveillance Procedures. Caused by Not Recognizing That Failure in One Actuation Scheme.Affected Logic Circuitry Was Tested

05000413/LER-1985-071, :on 851220,reactor Trip Occurred.Caused by Equipment Malfunction.Work Request Initiated to Investigate & Repair Steam Generator Feedwater Control Valve 1CF28
type: Subject
page: https://kanterella.com/05000413/LER-2D1985-2D071-2C_-3Aon_851220-2Creactor_Trip_Occurred.Caused_by_Equipment_Malfunction.Work_Request_Initiated_to_Investigate_-26_Repair_Steam_Generator_Feedwater_Cont…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-071, :on 851220,reactor Trip Occurred.Caused by Equipment Malfunction.Work Request Initiated to Investigate & Repair Steam Generator Feedwater Control Valve 1CF28

LER-1985-019, :on 850723,grab Samples Not Obtained While Turbine Bldg Sump Radiation Monitor Inoperable.Caused by Personnel Oversight.Addl Controls to Process Surveillance Test Task Sheets Established
type: Subject
label: 05000395/LER-1985-019, :on 850723,grab Samples Not Obtained While Turbine Bldg Sump Radiation Monitor Inoperable.Caused by Personnel Oversight.Addl Controls to Process Surveillance Test Task Sheets Established
page: https://kanterella.com/05000395/LER-2D1985-2D019-2C_-3Aon_850723-2Cgrab_Samples_Not_Obtained_While_Turbine_Bldg_Sump_Radiation_Monitor_Inoperable.Caused_by_Personnel_Oversight.Addl_Controls_to_Process…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000395/LER-1985-019, :on 850723,grab Samples Not Obtained While Turbine Bldg Sump Radiation Monitor Inoperable.Caused by Personnel Oversight.Addl Controls to Process Surveillance Test Task Sheets Established

LER-1985-018, :on 851023,high Flux Scram Alarm Received on Nuclear Instrumentation Channel 6.Caused by Malfunction in Oscillator Circuit on Trip Stage.Step Added to Plant Startup Procedure to Ensure Recorders on
type: Subject
label: 05000409/LER-1985-018, :on 851023,high Flux Scram Alarm Received on Nuclear Instrumentation Channel 6.Caused by Malfunction in Oscillator Circuit on Trip Stage.Step Added to Plant Startup Procedure to Ensure Recorders on
page: https://kanterella.com/05000409/LER-2D1985-2D018-2C_-3Aon_851023-2Chigh_Flux_Scram_Alarm_Received_on_Nuclear_Instrumentation_Channel_6.Caused_by_Malfunction_in_Oscillator_Circuit_on_Trip_Stage.Step_Ad…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1985-018, :on 851023,high Flux Scram Alarm Received on Nuclear Instrumentation Channel 6.Caused by Malfunction in Oscillator Circuit on Trip Stage.Step Added to Plant Startup Procedure to Ensure Recorders on

LER-1985-009-01, :on 851022,generator & Reactor Trip Occurred. Caused by Technician Inadvertently Actuating Current Test Block of Main Generator Differential Relay.Technician Counseled & Instructions Installed on Panel
type: Subject
label: 05000323/LER-1985-009-01, :on 851022,generator & Reactor Trip Occurred. Caused by Technician Inadvertently Actuating Current Test Block of Main Generator Differential Relay.Technician Counseled & Instructions Installed on Panel
page: https://kanterella.com/05000323/LER-2D1985-2D009-2D01-2C_-3Aon_851022-2Cgenerator_-26_Reactor_Trip_Occurred._Caused_by_Technician_Inadvertently_Actuating_Current_Test_Block_of_Main_Generator_Different…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000323/LER-1985-009-01, :on 851022,generator & Reactor Trip Occurred. Caused by Technician Inadvertently Actuating Current Test Block of Main Generator Differential Relay.Technician Counseled & Instructions Installed on Panel

LER-1985-012-01, :on 851017,review of Completed Surveillance Test Procedure Data Sheet Determined Three Feedwater Control Valves Had Exceeded Closure Time Requirements of Tech Spec Table 3.3-5.Caused by Personnel Error
type: Subject
label: 05000323/LER-1985-012-01, :on 851017,review of Completed Surveillance Test Procedure Data Sheet Determined Three Feedwater Control Valves Had Exceeded Closure Time Requirements of Tech Spec Table 3.3-5.Caused by Personnel Error
page: https://kanterella.com/05000323/LER-2D1985-2D012-2D01-2C_-3Aon_851017-2Creview_of_Completed_Surveillance_Test_Procedure_Data_Sheet_Determined_Three_Feedwater_Control_Valves_Had_Exceeded_Closure_Time_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000323/LER-1985-012-01, :on 851017,review of Completed Surveillance Test Procedure Data Sheet Determined Three Feedwater Control Valves Had Exceeded Closure Time Requirements of Tech Spec Table 3.3-5.Caused by Personnel Error

LER-1985-013, :on 850609,main Feedwater Pump 1 Tripped on Overspeed Due to Control Problem.Reactor Also Tripped on High RCS Pressure Because of Inadequate Feedwater.Corrective Actions Not Yet Determined
type: Subject
label: 05000346/LER-1985-013, :on 850609,main Feedwater Pump 1 Tripped on Overspeed Due to Control Problem.Reactor Also Tripped on High RCS Pressure Because of Inadequate Feedwater.Corrective Actions Not Yet Determined
page: https://kanterella.com/05000346/LER-2D1985-2D013-2C_-3Aon_850609-2Cmain_Feedwater_Pump_1_Tripped_on_Overspeed_Due_to_Control_Problem.Reactor_Also_Tripped_on_High_RCS_Pressure_Because_of_Inadequate_Fee…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000346/LER-1985-013, :on 850609,main Feedwater Pump 1 Tripped on Overspeed Due to Control Problem.Reactor Also Tripped on High RCS Pressure Because of Inadequate Feedwater.Corrective Actions Not Yet Determined

O Taking Hydrogen Concentration Sample Per Tech Spec 4.1.3.Caused by Personnel Error.Tank Sampled & Analyzed After Discovery
type: Subject
label: 05000269/LER-1985-013-03, :on 851019,gaseous Waste Disposal Tank 1C Pressurized & Isolated W/O Taking Hydrogen Concentration Sample Per Tech Spec 4.1.3.Caused by Personnel Error.Tank Sampled & Analyzed After Discovery
page: https://kanterella.com/05000269/LER-2D1985-2D013-2D03-2C_-3Aon_851019-2Cgaseous_Waste_Disposal_Tank_1C_Pressurized_-26_Isolated_W/O_Taking_Hydrogen_Concentration_Sample_Per_Tech_Spec_4.1.3.Caused_by_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1985-013-03, :on 851019,gaseous Waste Disposal Tank 1C Pressurized & Isolated W/O Taking Hydrogen Concentration Sample Per Tech Spec 4.1.3.Caused by Personnel Error.Tank Sampled & Analyzed After Discovery

LER-1997-003, :on 970213,identified Potential Overpressurization of Containment Penetrations Due to Thermal Expansion.Caused by Original Plant Design.Completed Operability Determinations IAW GL 91-18
type: Subject
label: 05000333/LER-1997-003, :on 970213,identified Potential Overpressurization of Containment Penetrations Due to Thermal Expansion.Caused by Original Plant Design.Completed Operability Determinations IAW GL 91-18
page: https://kanterella.com/05000333/LER-2D1997-2D003-2C_-3Aon_970213-2Cidentified_Potential_Overpressurization_of_Containment_Penetrations_Due_to_Thermal_Expansion.Caused_by_Original_Plant_Design.Complete…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000333/LER-1997-003, :on 970213,identified Potential Overpressurization of Containment Penetrations Due to Thermal Expansion.Caused by Original Plant Design.Completed Operability Determinations IAW GL 91-18

Facility Health Physics Controls Requiring Dress Out Before Entering Area.Employee Terminated on 851209
type: Subject
label: 05000382/LER-1985-050, :on 851202,04 & 09,fire Watch Tours Not Conducted.Caused by New Employees Unfamiliar W/Facility Health Physics Controls Requiring Dress Out Before Entering Area.Employee Terminated on 851209
page: https://kanterella.com/05000382/LER-2D1985-2D050-2C_-3Aon_851202-2C04_-26_09-2Cfire_Watch_Tours_Not_Conducted.Caused_by_New_Employees_Unfamiliar_W/Facility_Health_Physics_Controls_Requiring_Dress_Out_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1985-050, :on 851202,04 & 09,fire Watch Tours Not Conducted.Caused by New Employees Unfamiliar W/Facility Health Physics Controls Requiring Dress Out Before Entering Area.Employee Terminated on 851209

LER-1997-002-01, :on 970207,determined TS Surveillance Requirement 3.8.1.9 Had Not Been Adequately Implemented. Caused by Less than Adequate Procedures in Logic Sys Functional Test.Operating Order Issued
type: Subject
label: 05000321/LER-1997-002-01, :on 970207,determined TS Surveillance Requirement 3.8.1.9 Had Not Been Adequately Implemented. Caused by Less than Adequate Procedures in Logic Sys Functional Test.Operating Order Issued
page: https://kanterella.com/05000321/LER-2D1997-2D002-2D01-2C_-3Aon_970207-2Cdetermined_TS_Surveillance_Requirement_3.8.1.9_Had_Not_Been_Adequately_Implemented._Caused_by_Less_than_Adequate_Procedures_in_L…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000321/LER-1997-002-01, :on 970207,determined TS Surveillance Requirement 3.8.1.9 Had Not Been Adequately Implemented. Caused by Less than Adequate Procedures in Logic Sys Functional Test.Operating Order Issued

LER-1996-014, :on 961106,incorrect Circuit Breaker Setting Resulted in Inoperable Edg.Caused by Failure to Incorporate Design Info Into Appropriate Plant Single Line Electrical Drawing.Temporary Plant Mod Will Be Installed
type: Subject
label: 05000321/LER-1996-014, :on 961106,incorrect Circuit Breaker Setting Resulted in Inoperable Edg.Caused by Failure to Incorporate Design Info Into Appropriate Plant Single Line Electrical Drawing.Temporary Plant Mod Will Be Installed
page: https://kanterella.com/05000321/LER-2D1996-2D014-2C_-3Aon_961106-2Cincorrect_Circuit_Breaker_Setting_Resulted_in_Inoperable_Edg.Caused_by_Failure_to_Incorporate_Design_Info_Into_Appropriate_Plant_Sing…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000321/LER-1996-014, :on 961106,incorrect Circuit Breaker Setting Resulted in Inoperable Edg.Caused by Failure to Incorporate Design Info Into Appropriate Plant Single Line Electrical Drawing.Temporary Plant Mod Will Be Installed

LER-1985-005-09, :on 850806,discovered That Svc Bus Undervoltage Start of steam-driven Auxiliary Feedwater Pump Not Tested Per Tech Spec Table 4.4-1.Procedure PT-5C Prepared & Will Be Placed on Surveillance Schedule by 851115
type: Subject
label: 05000304/LER-1985-005-09, :on 850806,discovered That Svc Bus Undervoltage Start of steam-driven Auxiliary Feedwater Pump Not Tested Per Tech Spec Table 4.4-1.Procedure PT-5C Prepared & Will Be Placed on Surveillance Schedule by 851115
page: https://kanterella.com/05000304/LER-2D1985-2D005-2D09-2C_-3Aon_850806-2Cdiscovered_That_Svc_Bus_Undervoltage_Start_of_steam-2Ddriven_Auxiliary_Feedwater_Pump_Not_Tested_Per_Tech_Spec_Table_4.4-2D1.Pro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000304/LER-1985-005-09, :on 850806,discovered That Svc Bus Undervoltage Start of steam-driven Auxiliary Feedwater Pump Not Tested Per Tech Spec Table 4.4-1.Procedure PT-5C Prepared & Will Be Placed on Surveillance Schedule by 851115

LER-1997-002, :on 970122,identified Potential Overpressurization of Penetrations During Accident Conditions.Plant Mods & Procedure Changes Being Developed to Prevent Overpressurization of Piping
type: Subject
label: 05000346/LER-1997-002, :on 970122,identified Potential Overpressurization of Penetrations During Accident Conditions.Plant Mods & Procedure Changes Being Developed to Prevent Overpressurization of Piping
page: https://kanterella.com/05000346/LER-2D1997-2D002-2C_-3Aon_970122-2Cidentified_Potential_Overpressurization_of_Penetrations_During_Accident_Conditions.Plant_Mods_-26_Procedure_Changes_Being_Developed_t…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000346/LER-1997-002, :on 970122,identified Potential Overpressurization of Penetrations During Accident Conditions.Plant Mods & Procedure Changes Being Developed to Prevent Overpressurization of Piping

LER-1997-001, :on 970122,main Steam Outside of Design Basis Occurred Due to an Error in Safety Valve Analysis.Guidance Has Been Provided to Operating Staff to Ensure That Design Basis Maintained
type: Subject
label: 05000285/LER-1997-001, :on 970122,main Steam Outside of Design Basis Occurred Due to an Error in Safety Valve Analysis.Guidance Has Been Provided to Operating Staff to Ensure That Design Basis Maintained
page: https://kanterella.com/05000285/LER-2D1997-2D001-2C_-3Aon_970122-2Cmain_Steam_Outside_of_Design_Basis_Occurred_Due_to_an_Error_in_Safety_Valve_Analysis.Guidance_Has_Been_Provided_to_Operating_Staff_to…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1997-001, :on 970122,main Steam Outside of Design Basis Occurred Due to an Error in Safety Valve Analysis.Guidance Has Been Provided to Operating Staff to Ensure That Design Basis Maintained

LER-1996-010, :on 961018,loss of Containment Closure Noted Due to Maint Activity During Refueling.Station Procedures Including OI-CO-4,will Be Reviewed & Revised as Necessary to Ensure Adequate Controls Exist
type: Subject
label: 05000285/LER-1996-010, :on 961018,loss of Containment Closure Noted Due to Maint Activity During Refueling.Station Procedures Including OI-CO-4,will Be Reviewed & Revised as Necessary to Ensure Adequate Controls Exist
page: https://kanterella.com/05000285/LER-2D1996-2D010-2C_-3Aon_961018-2Closs_of_Containment_Closure_Noted_Due_to_Maint_Activity_During_Refueling.Station_Procedures_Including_OI-2DCO-2D4-2Cwill_Be_Reviewed_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1996-010, :on 961018,loss of Containment Closure Noted Due to Maint Activity During Refueling.Station Procedures Including OI-CO-4,will Be Reviewed & Revised as Necessary to Ensure Adequate Controls Exist

05000250/LER-1985-022, :on 850729,reactor Trip Occurred.Caused by Dirty Contacts on One Nuclear Instrumentation Sys Channel. Power Range Trip Relays Removed,Cleaned & Reinstalled
type: Subject
page: https://kanterella.com/05000250/LER-2D1985-2D022-2C_-3Aon_850729-2Creactor_Trip_Occurred.Caused_by_Dirty_Contacts_on_One_Nuclear_Instrumentation_Sys_Channel._Power_Range_Trip_Relays_Removed-2CCleaned_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000250/LER-1985-022, :on 850729,reactor Trip Occurred.Caused by Dirty Contacts on One Nuclear Instrumentation Sys Channel. Power Range Trip Relays Removed,Cleaned & Reinstalled

LER-1995-001-01, :on 950118,accumulation of Gas in Residual Heat Removal Sys.Caused by Normal Leakage from Cold Leg Accumulators.Performed Monitoring & Venting of Gas Accumulation & Revised Quarterly Pump Tests
type: Subject
label: 05000327/LER-1995-001-01, :on 950118,accumulation of Gas in Residual Heat Removal Sys.Caused by Normal Leakage from Cold Leg Accumulators.Performed Monitoring & Venting of Gas Accumulation & Revised Quarterly Pump Tests
page: https://kanterella.com/05000327/LER-2D1995-2D001-2D01-2C_-3Aon_950118-2Caccumulation_of_Gas_in_Residual_Heat_Removal_Sys.Caused_by_Normal_Leakage_from_Cold_Leg_Accumulators.Performed_Monitoring_-26_Ve…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1995-001-01, :on 950118,accumulation of Gas in Residual Heat Removal Sys.Caused by Normal Leakage from Cold Leg Accumulators.Performed Monitoring & Venting of Gas Accumulation & Revised Quarterly Pump Tests

Reactor Trip Bypass.Caused by Inadequate Surveillance Test Procedures.Revised Procedure Controlling Reactor Trip Bypass Breaker
type: Subject
label: 05000338/LER-1996-009, :on 961010,determined Missed Surveillance Occurred W/Reactor Trip Bypass.Caused by Inadequate Surveillance Test Procedures.Revised Procedure Controlling Reactor Trip Bypass Breaker
page: https://kanterella.com/05000338/LER-2D1996-2D009-2C_-3Aon_961010-2Cdetermined_Missed_Surveillance_Occurred_W/Reactor_Trip_Bypass.Caused_by_Inadequate_Surveillance_Test_Procedures.Revised_Procedure_Con…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000338/LER-1996-009, :on 961010,determined Missed Surveillance Occurred W/Reactor Trip Bypass.Caused by Inadequate Surveillance Test Procedures.Revised Procedure Controlling Reactor Trip Bypass Breaker

LER-1985-034, :on 850718,trip Occurred as Result of Power Range High Negative Flux Rate Signal.Caused by Inadequate Cooling of Rod Drive Power Cabinet.Caution Tag Added to Handswitch Controlling Room Cooler
type: Subject
label: 05000483/LER-1985-034, :on 850718,trip Occurred as Result of Power Range High Negative Flux Rate Signal.Caused by Inadequate Cooling of Rod Drive Power Cabinet.Caution Tag Added to Handswitch Controlling Room Cooler
page: https://kanterella.com/05000483/LER-2D1985-2D034-2C_-3Aon_850718-2Ctrip_Occurred_as_Result_of_Power_Range_High_Negative_Flux_Rate_Signal.Caused_by_Inadequate_Cooling_of_Rod_Drive_Power_Cabinet.Caution…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000483/LER-1985-034, :on 850718,trip Occurred as Result of Power Range High Negative Flux Rate Signal.Caused by Inadequate Cooling of Rod Drive Power Cabinet.Caution Tag Added to Handswitch Controlling Room Cooler

05000285/LER-1996-007, :on 961005,unplanned Reactor Protection Sys Actuation Occurred During Plant Cooldown.Caused by Failure to Complete Step in OP-3A as Required.Procedure Revised.W/
type: Subject
page: https://kanterella.com/05000285/LER-2D1996-2D007-2C_-3Aon_961005-2Cunplanned_Reactor_Protection_Sys_Actuation_Occurred_During_Plant_Cooldown.Caused_by_Failure_to_Complete_Step_in_OP-2D3A_as_Required.P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1996-007, :on 961005,unplanned Reactor Protection Sys Actuation Occurred During Plant Cooldown.Caused by Failure to Complete Step in OP-3A as Required.Procedure Revised.W/

Design Specs. Cause Not Stated.Permanent Seal Installed
type: Subject
label: 05000315/LER-1985-028, :on 850613,fire Barrier Seals Located Above Walls Separating Control Room Cable Vault & Hot Shutdown Panel Cable Room Not Installed in Accordance W/Design Specs. Cause Not Stated.Permanent Seal Installed
page: https://kanterella.com/05000315/LER-2D1985-2D028-2C_-3Aon_850613-2Cfire_Barrier_Seals_Located_Above_Walls_Separating_Control_Room_Cable_Vault_-26_Hot_Shutdown_Panel_Cable_Room_Not_Installed_in_Accorda…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000315/LER-1985-028, :on 850613,fire Barrier Seals Located Above Walls Separating Control Room Cable Vault & Hot Shutdown Panel Cable Room Not Installed in Accordance W/Design Specs. Cause Not Stated.Permanent Seal Installed

LER-1985-032, :on 850715,alarm in Fire Detection Zone 308 Activated by Cooking in Control Room Pantry But Not Reset. Remaining Zone 308 Fire Detectors Inoperable.Alarm Reset.Mod Request Initiated
type: Subject
label: 05000483/LER-1985-032, :on 850715,alarm in Fire Detection Zone 308 Activated by Cooking in Control Room Pantry But Not Reset. Remaining Zone 308 Fire Detectors Inoperable.Alarm Reset.Mod Request Initiated
page: https://kanterella.com/05000483/LER-2D1985-2D032-2C_-3Aon_850715-2Calarm_in_Fire_Detection_Zone_308_Activated_by_Cooking_in_Control_Room_Pantry_But_Not_Reset._Remaining_Zone_308_Fire_Detectors_Inopera…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000483/LER-1985-032, :on 850715,alarm in Fire Detection Zone 308 Activated by Cooking in Control Room Pantry But Not Reset. Remaining Zone 308 Fire Detectors Inoperable.Alarm Reset.Mod Request Initiated

LER-1985-011-01, :on 850918,emergency Diesel Generator 1J Tripped on High Crankcase Pressure & Repairs Not Completed within 72 H,Causing Cold Shutdown on 850921.Caused by Cracked Cylinder Liner.Liner Replaced
type: Subject
label: 05000338/LER-1985-011-01, :on 850918,emergency Diesel Generator 1J Tripped on High Crankcase Pressure & Repairs Not Completed within 72 H,Causing Cold Shutdown on 850921.Caused by Cracked Cylinder Liner.Liner Replaced
page: https://kanterella.com/05000338/LER-2D1985-2D011-2D01-2C_-3Aon_850918-2Cemergency_Diesel_Generator_1J_Tripped_on_High_Crankcase_Pressure_-26_Repairs_Not_Completed_within_72_H-2CCausing_Cold_Shutdown_o…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000338/LER-1985-011-01, :on 850918,emergency Diesel Generator 1J Tripped on High Crankcase Pressure & Repairs Not Completed within 72 H,Causing Cold Shutdown on 850921.Caused by Cracked Cylinder Liner.Liner Replaced

LER-1996-005, :on 961213,reactor Containment Building Personnel Airlock Incorrectly Declared Operable Occurred. Caused by Pertinent Information Re Status of Seal Replacement.Occurrence Has Been Reviewed
type: Subject
label: 05000498/LER-1996-005, :on 961213,reactor Containment Building Personnel Airlock Incorrectly Declared Operable Occurred. Caused by Pertinent Information Re Status of Seal Replacement.Occurrence Has Been Reviewed
page: https://kanterella.com/05000498/LER-2D1996-2D005-2C_-3Aon_961213-2Creactor_Containment_Building_Personnel_Airlock_Incorrectly_Declared_Operable_Occurred._Caused_by_Pertinent_Information_Re_Status_of_S…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000498/LER-1996-005, :on 961213,reactor Containment Building Personnel Airlock Incorrectly Declared Operable Occurred. Caused by Pertinent Information Re Status of Seal Replacement.Occurrence Has Been Reviewed

Operators & Valves Relabeled Clearly
type: Subject
label: 05000213/LER-1985-025, :on 850919,unplanned Release of Radwaste to Environ Detected.Caused by Isolation Valve Left Open Through Operator Error & Ambiguous Valve Tag Numbers.Event Reviewed W/Operators & Valves Relabeled Clearly
page: https://kanterella.com/05000213/LER-2D1985-2D025-2C_-3Aon_850919-2Cunplanned_Release_of_Radwaste_to_Environ_Detected.Caused_by_Isolation_Valve_Left_Open_Through_Operator_Error_-26_Ambiguous_Valve_Tag_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000213/LER-1985-025, :on 850919,unplanned Release of Radwaste to Environ Detected.Caused by Isolation Valve Left Open Through Operator Error & Ambiguous Valve Tag Numbers.Event Reviewed W/Operators & Valves Relabeled Clearly

Qptr Alarm Inoperable. Caused by Personnel Error.Channel Returned to Normal.Shift Meetings Held
type: Subject
label: 05000295/LER-1985-033-04, :on 850913,manual Quadrant Power Tilt Ratio (QPTR) Calculations Not Performed W/Qptr Alarm Inoperable. Caused by Personnel Error.Channel Returned to Normal.Shift Meetings Held
page: https://kanterella.com/05000295/LER-2D1985-2D033-2D04-2C_-3Aon_850913-2Cmanual_Quadrant_Power_Tilt_Ratio_-28QPTR-29_Calculations_Not_Performed_W/Qptr_Alarm_Inoperable._Caused_by_Personnel_Error.Channe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000295/LER-1985-033-04, :on 850913,manual Quadrant Power Tilt Ratio (QPTR) Calculations Not Performed W/Qptr Alarm Inoperable. Caused by Personnel Error.Channel Returned to Normal.Shift Meetings Held

LER-1985-016, :on 850703,ex-core Channel Failed to Meet Acceptance Criteria for Dropped Rod Load Runback Setpoint During Nuclear Instrumentation Sys Surveillance.Caused by Setpoint Drift.Setpoint Recalibr
type: Subject
label: 05000213/LER-1985-016, :on 850703,ex-core Channel Failed to Meet Acceptance Criteria for Dropped Rod Load Runback Setpoint During Nuclear Instrumentation Sys Surveillance.Caused by Setpoint Drift.Setpoint Recalibr
page: https://kanterella.com/05000213/LER-2D1985-2D016-2C_-3Aon_850703-2Cex-2Dcore_Channel_Failed_to_Meet_Acceptance_Criteria_for_Dropped_Rod_Load_Runback_Setpoint_During_Nuclear_Instrumentation_Sys_Surveil…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000213/LER-1985-016, :on 850703,ex-core Channel Failed to Meet Acceptance Criteria for Dropped Rod Load Runback Setpoint During Nuclear Instrumentation Sys Surveillance.Caused by Setpoint Drift.Setpoint Recalibr

LER-1985-012-07, :on 850702,purge Valves Closed on High Radiation Signal from Containment Purge Exhaust Noble Gas Monitor.Caused by Procedural Deficiency Resulting in High Alarm Setpoint Set Too Low.Procedure Revised
type: Subject
label: 05000304/LER-1985-012-07, :on 850702,purge Valves Closed on High Radiation Signal from Containment Purge Exhaust Noble Gas Monitor.Caused by Procedural Deficiency Resulting in High Alarm Setpoint Set Too Low.Procedure Revised
page: https://kanterella.com/05000304/LER-2D1985-2D012-2D07-2C_-3Aon_850702-2Cpurge_Valves_Closed_on_High_Radiation_Signal_from_Containment_Purge_Exhaust_Noble_Gas_Monitor.Caused_by_Procedural_Deficiency_Re…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000304/LER-1985-012-07, :on 850702,purge Valves Closed on High Radiation Signal from Containment Purge Exhaust Noble Gas Monitor.Caused by Procedural Deficiency Resulting in High Alarm Setpoint Set Too Low.Procedure Revised

LER-1985-031, :on 850704,main Feedwater Pump a Tripped Due to High Vibrations on Feedwater Pump Turbine.No Apparent Cause Noted.Alarming Function Will Remain in Place to Alert Personnel of Vibration Increase
type: Subject
label: 05000382/LER-1985-031, :on 850704,main Feedwater Pump a Tripped Due to High Vibrations on Feedwater Pump Turbine.No Apparent Cause Noted.Alarming Function Will Remain in Place to Alert Personnel of Vibration Increase
page: https://kanterella.com/05000382/LER-2D1985-2D031-2C_-3Aon_850704-2Cmain_Feedwater_Pump_a_Tripped_Due_to_High_Vibrations_on_Feedwater_Pump_Turbine.No_Apparent_Cause_Noted.Alarming_Function_Will_Remain_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1985-031, :on 850704,main Feedwater Pump a Tripped Due to High Vibrations on Feedwater Pump Turbine.No Apparent Cause Noted.Alarming Function Will Remain in Place to Alert Personnel of Vibration Increase

LER-1985-022-01, :on 850703,instrumentation & Controls Technician Inadvertently Connected Test Equipment to Electronics Module for Reactor Water Cleanup Sys.Technician Counseled.Rear Input Wires Labeled
type: Subject
label: 05000388/LER-1985-022-01, :on 850703,instrumentation & Controls Technician Inadvertently Connected Test Equipment to Electronics Module for Reactor Water Cleanup Sys.Technician Counseled.Rear Input Wires Labeled
page: https://kanterella.com/05000388/LER-2D1985-2D022-2D01-2C_-3Aon_850703-2Cinstrumentation_-26_Controls_Technician_Inadvertently_Connected_Test_Equipment_to_Electronics_Module_for_Reactor_Water_Cleanup_S…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000388/LER-1985-022-01, :on 850703,instrumentation & Controls Technician Inadvertently Connected Test Equipment to Electronics Module for Reactor Water Cleanup Sys.Technician Counseled.Rear Input Wires Labeled

LER-1985-007-03, :on 850205,two ESF Actuations Occurred During Work on Reactor Protection & Nuclear Instrumentation Sys Channels.Caused by Procedures Allowing Simultaneous Sys Work.Procedures Revised
type: Subject
label: 05000369/LER-1985-007-03, :on 850205,two ESF Actuations Occurred During Work on Reactor Protection & Nuclear Instrumentation Sys Channels.Caused by Procedures Allowing Simultaneous Sys Work.Procedures Revised
page: https://kanterella.com/05000369/LER-2D1985-2D007-2D03-2C_-3Aon_850205-2Ctwo_ESF_Actuations_Occurred_During_Work_on_Reactor_Protection_-26_Nuclear_Instrumentation_Sys_Channels.Caused_by_Procedures_Allo…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-007-03, :on 850205,two ESF Actuations Occurred During Work on Reactor Protection & Nuclear Instrumentation Sys Channels.Caused by Procedures Allowing Simultaneous Sys Work.Procedures Revised

LER-1985-036, :on 850626,during Evaluation,Discovered That Addl RCIC & HPCI Sys Isolation Valves Not Local Leak Tested (Type C) Per 10CFR50,App J.Caused by Incomplete App J Program.Valves Added to Program
type: Subject
label: 05000259/LER-1985-036, :on 850626,during Evaluation,Discovered That Addl RCIC & HPCI Sys Isolation Valves Not Local Leak Tested (Type C) Per 10CFR50,App J.Caused by Incomplete App J Program.Valves Added to Program
page: https://kanterella.com/05000259/LER-2D1985-2D036-2C_-3Aon_850626-2Cduring_Evaluation-2CDiscovered_That_Addl_RCIC_-26_HPCI_Sys_Isolation_Valves_Not_Local_Leak_Tested_-28Type_C-29_Per_10CFR50-2CApp_J.Ca…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1985-036, :on 850626,during Evaluation,Discovered That Addl RCIC & HPCI Sys Isolation Valves Not Local Leak Tested (Type C) Per 10CFR50,App J.Caused by Incomplete App J Program.Valves Added to Program

05000395/LER-1985-026, :on 850908,at 100% Power,Turbine Driven Emergency Feedwater Pump Indicator Read 250 Rpm.Caused by Seat Leakage Past Steam Supply Control Valve.Valve Repaired & Reset
type: Subject
page: https://kanterella.com/05000395/LER-2D1985-2D026-2C_-3Aon_850908-2Cat_100-_Power-2CTurbine_Driven_Emergency_Feedwater_Pump_Indicator_Read_250_Rpm.Caused_by_Seat_Leakage_Past_Steam_Supply_Control_Valve…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000395/LER-1985-026, :on 850908,at 100% Power,Turbine Driven Emergency Feedwater Pump Indicator Read 250 Rpm.Caused by Seat Leakage Past Steam Supply Control Valve.Valve Repaired & Reset

LER-1985-018-01, :on 850525,valve 1RV-429 in Containment Ventilation Cooling Water Sys Outside Containment Found Open,Allowing Flow Path Between Auxiliary Bldg & Upper Containment Through Inside Containment Valve
type: Subject
label: 05000369/LER-1985-018-01, :on 850525,valve 1RV-429 in Containment Ventilation Cooling Water Sys Outside Containment Found Open,Allowing Flow Path Between Auxiliary Bldg & Upper Containment Through Inside Containment Valve
page: https://kanterella.com/05000369/LER-2D1985-2D018-2D01-2C_-3Aon_850525-2Cvalve_1RV-2D429_in_Containment_Ventilation_Cooling_Water_Sys_Outside_Containment_Found_Open-2CAllowing_Flow_Path_Between_Auxilia…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-018-01, :on 850525,valve 1RV-429 in Containment Ventilation Cooling Water Sys Outside Containment Found Open,Allowing Flow Path Between Auxiliary Bldg & Upper Containment Through Inside Containment Valve

05000213/LER-1985-008, :on 850320,during Test of Fire Protection Sys, Actuation of Carbon Dioxide Sys Failed to Shut Off Containment Cable Vault Exhaust Fan.Caused by Wiring Error. Exhaust Fan Rewired
type: Subject
page: https://kanterella.com/05000213/LER-2D1985-2D008-2C_-3Aon_850320-2Cduring_Test_of_Fire_Protection_Sys-2C_Actuation_of_Carbon_Dioxide_Sys_Failed_to_Shut_Off_Containment_Cable_Vault_Exhaust_Fan.Caused_b…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000213/LER-1985-008, :on 850320,during Test of Fire Protection Sys, Actuation of Carbon Dioxide Sys Failed to Shut Off Containment Cable Vault Exhaust Fan.Caused by Wiring Error. Exhaust Fan Rewired

LER-1985-028, :on 850627,DNBR & Local Power Density Trip Generated,Resulting in Actuation of Reactor Protective Sys. Caused by Control Element Assembly Position Deviation.Ler to Be Emphasized During Operator Training
type: Subject
label: 05000382/LER-1985-028, :on 850627,DNBR & Local Power Density Trip Generated,Resulting in Actuation of Reactor Protective Sys. Caused by Control Element Assembly Position Deviation.Ler to Be Emphasized During Operator Training
page: https://kanterella.com/05000382/LER-2D1985-2D028-2C_-3Aon_850627-2CDNBR_-26_Local_Power_Density_Trip_Generated-2CResulting_in_Actuation_of_Reactor_Protective_Sys._Caused_by_Control_Element_Assembly_Po…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1985-028, :on 850627,DNBR & Local Power Density Trip Generated,Resulting in Actuation of Reactor Protective Sys. Caused by Control Element Assembly Position Deviation.Ler to Be Emphasized During Operator Training

05000409/LER-1985-013, :on 850701,09,10 & 12,high Pressure Svc Water diesel-driven Pump 1A Malfunctioned.Caused by Air in Fuel Line.Priming Tank Refilled & Diesel Fuel Filters Vented
type: Subject
page: https://kanterella.com/05000409/LER-2D1985-2D013-2C_-3Aon_850701-2C09-2C10_-26_12-2Chigh_Pressure_Svc_Water_diesel-2Ddriven_Pump_1A_Malfunctioned.Caused_by_Air_in_Fuel_Line.Priming_Tank_Refilled_-26_D…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1985-013, :on 850701,09,10 & 12,high Pressure Svc Water diesel-driven Pump 1A Malfunctioned.Caused by Air in Fuel Line.Priming Tank Refilled & Diesel Fuel Filters Vented

LER-1985-018-02, :on 850624,unit Tripped Due to Low Level of Steam Generator 2C.Caused by Valve 2CF-28 Closure Due to Solenoid Failure.Valve Repaired.Steam Leak Discovered in Auxiliary Feedwater Sys & Repaired
type: Subject
label: 05000370/LER-1985-018-02, :on 850624,unit Tripped Due to Low Level of Steam Generator 2C.Caused by Valve 2CF-28 Closure Due to Solenoid Failure.Valve Repaired.Steam Leak Discovered in Auxiliary Feedwater Sys & Repaired
page: https://kanterella.com/05000370/LER-2D1985-2D018-2D02-2C_-3Aon_850624-2Cunit_Tripped_Due_to_Low_Level_of_Steam_Generator_2C.Caused_by_Valve_2CF-2D28_Closure_Due_to_Solenoid_Failure.Valve_Repaired.Stea…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1985-018-02, :on 850624,unit Tripped Due to Low Level of Steam Generator 2C.Caused by Valve 2CF-28 Closure Due to Solenoid Failure.Valve Repaired.Steam Leak Discovered in Auxiliary Feedwater Sys & Repaired

05000213/LER-1984-010, :on 840803,RCS Low Pressure Overpressure Protection Safety Valves Opened.Cause Not Determined.Valves Dismantled & Repaired & Wide Range RCS Pressure Transmitters Replaced
type: Subject
page: https://kanterella.com/05000213/LER-2D1984-2D010-2C_-3Aon_840803-2CRCS_Low_Pressure_Overpressure_Protection_Safety_Valves_Opened.Cause_Not_Determined.Valves_Dismantled_-26_Repaired_-26_Wide_Range_RCS_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000213/LER-1984-010, :on 840803,RCS Low Pressure Overpressure Protection Safety Valves Opened.Cause Not Determined.Valves Dismantled & Repaired & Wide Range RCS Pressure Transmitters Replaced

LER-1985-016-07, :on 850826,equipment Attendant Observed HPCI Room Cooler Fan Breaker Emitting Smoke.Caused by Shorted Motor Contactor Coil.Coil & Auxiliary Contacts Replaced & Maint Procedure DMP 7300-5 Performed
type: Subject
label: 05000249/LER-1985-016-07, :on 850826,equipment Attendant Observed HPCI Room Cooler Fan Breaker Emitting Smoke.Caused by Shorted Motor Contactor Coil.Coil & Auxiliary Contacts Replaced & Maint Procedure DMP 7300-5 Performed
page: https://kanterella.com/05000249/LER-2D1985-2D016-2D07-2C_-3Aon_850826-2Cequipment_Attendant_Observed_HPCI_Room_Cooler_Fan_Breaker_Emitting_Smoke.Caused_by_Shorted_Motor_Contactor_Coil.Coil_-26_Auxilia…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000249/LER-1985-016-07, :on 850826,equipment Attendant Observed HPCI Room Cooler Fan Breaker Emitting Smoke.Caused by Shorted Motor Contactor Coil.Coil & Auxiliary Contacts Replaced & Maint Procedure DMP 7300-5 Performed

LER-1985-012-03, :on 850819,determined That Several Reactor Bldg Tendon Insps Not Performed & Insp Repts Not Sent to NRC on Time.Caused by Misinterpretation of Tech Specs. Administrative Directives Revised
type: Subject
label: 05000269/LER-1985-012-03, :on 850819,determined That Several Reactor Bldg Tendon Insps Not Performed & Insp Repts Not Sent to NRC on Time.Caused by Misinterpretation of Tech Specs. Administrative Directives Revised
page: https://kanterella.com/05000269/LER-2D1985-2D012-2D03-2C_-3Aon_850819-2Cdetermined_That_Several_Reactor_Bldg_Tendon_Insps_Not_Performed_-26_Insp_Repts_Not_Sent_to_NRC_on_Time.Caused_by_Misinterpretati…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1985-012-03, :on 850819,determined That Several Reactor Bldg Tendon Insps Not Performed & Insp Repts Not Sent to NRC on Time.Caused by Misinterpretation of Tech Specs. Administrative Directives Revised

Requirements of 10CFR50 App J Identified.Caused by Personnel Error.Mods to Penetrations X-8,X-9A & X-9B Implemented
type: Subject
label: 05000245/LER-1996-026-01, :on 960321,failure to Perform Type C Leakage Test in Accordance W/Requirements of 10CFR50 App J Identified.Caused by Personnel Error.Mods to Penetrations X-8,X-9A & X-9B Implemented
page: https://kanterella.com/05000245/LER-2D1996-2D026-2D01-2C_-3Aon_960321-2Cfailure_to_Perform_Type_C_Leakage_Test_in_Accordance_W/Requirements_of_10CFR50_App_J_Identified.Caused_by_Personnel_Error.Mods_t…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000245/LER-1996-026-01, :on 960321,failure to Perform Type C Leakage Test in Accordance W/Requirements of 10CFR50 App J Identified.Caused by Personnel Error.Mods to Penetrations X-8,X-9A & X-9B Implemented

Spare & EDG & Governor Were Tested,Per RMP-110B & TS-81
type: Subject
label: 05000266/LER-1996-010, :on 961112,EDG Governor Failure Was Noted. Caused by Dislodging of Spring Clip in Synchronizer Indicator Assembly.Spring Clip Was Replaced W/Spare & EDG & Governor Were Tested,Per RMP-110B & TS-81
page: https://kanterella.com/05000266/LER-2D1996-2D010-2C_-3Aon_961112-2CEDG_Governor_Failure_Was_Noted._Caused_by_Dislodging_of_Spring_Clip_in_Synchronizer_Indicator_Assembly.Spring_Clip_Was_Replaced_W/Spa…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000266/LER-1996-010, :on 961112,EDG Governor Failure Was Noted. Caused by Dislodging of Spring Clip in Synchronizer Indicator Assembly.Spring Clip Was Replaced W/Spare & EDG & Governor Were Tested,Per RMP-110B & TS-81

LER-1996-012, :on 961008,ground on 600-volt Bus Causes Loss of RPS Power Supply & Unplanned ESF Sys Actuations.Caused by nonfault-tolerant Design.Cable & Heater Replaced & Use of Breaker Trip Devices Investigated
type: Subject
label: 05000321/LER-1996-012, :on 961008,ground on 600-volt Bus Causes Loss of RPS Power Supply & Unplanned ESF Sys Actuations.Caused by nonfault-tolerant Design.Cable & Heater Replaced & Use of Breaker Trip Devices Investigated
page: https://kanterella.com/05000321/LER-2D1996-2D012-2C_-3Aon_961008-2Cground_on_600-2Dvolt_Bus_Causes_Loss_of_RPS_Power_Supply_-26_Unplanned_ESF_Sys_Actuations.Caused_by_nonfault-2Dtolerant_Design.Cable_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000321/LER-1996-012, :on 961008,ground on 600-volt Bus Causes Loss of RPS Power Supply & Unplanned ESF Sys Actuations.Caused by nonfault-tolerant Design.Cable & Heater Replaced & Use of Breaker Trip Devices Investigated

LER-1985-028, :on 850422,both RHR Trains Inoperable & RCS Draining Began While Train a Inoperable Due to Maint.Caused by Personnel Error.Centrifugal Charging Pump a Started to Restore PCS Sys Level
type: Subject
label: 05000413/LER-1985-028, :on 850422,both RHR Trains Inoperable & RCS Draining Began While Train a Inoperable Due to Maint.Caused by Personnel Error.Centrifugal Charging Pump a Started to Restore PCS Sys Level
page: https://kanterella.com/05000413/LER-2D1985-2D028-2C_-3Aon_850422-2Cboth_RHR_Trains_Inoperable_-26_RCS_Draining_Began_While_Train_a_Inoperable_Due_to_Maint.Caused_by_Personnel_Error.Centrifugal_Chargin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-028, :on 850422,both RHR Trains Inoperable & RCS Draining Began While Train a Inoperable Due to Maint.Caused by Personnel Error.Centrifugal Charging Pump a Started to Restore PCS Sys Level

05000318/LER-1996-004-01, :on 960926,missed Surveillance Occurred Due to Less than Adequate Technical Review of Stp.Procedures Revised
type: Subject
page: https://kanterella.com/05000318/LER-2D1996-2D004-2D01-2C_-3Aon_960926-2Cmissed_Surveillance_Occurred_Due_to_Less_than_Adequate_Technical_Review_of_Stp.Procedures_Revised
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000318/LER-1996-004-01, :on 960926,missed Surveillance Occurred Due to Less than Adequate Technical Review of Stp.Procedures Revised

05000369/LER-1985-020-01, :on 850607,diesel Generator 1B Experienced Two Invalid Automatic Starts.Caused by Power Distribution Sys Disturbances Due to Severe Weather.Start Sys Will Be Modified
type: Subject
page: https://kanterella.com/05000369/LER-2D1985-2D020-2D01-2C_-3Aon_850607-2Cdiesel_Generator_1B_Experienced_Two_Invalid_Automatic_Starts.Caused_by_Power_Distribution_Sys_Disturbances_Due_to_Severe_Weather…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-020-01, :on 850607,diesel Generator 1B Experienced Two Invalid Automatic Starts.Caused by Power Distribution Sys Disturbances Due to Severe Weather.Start Sys Will Be Modified

LER-1985-021-02, :on 850503,during Shutdown,Two Reactor Scrams Occurred from Intermediate Range Monitors 13 & 15 hi-hi Condition.Caused by Spurious Radio Repeater Signals. Relocation of Radio Repeaters Initiated
type: Subject
label: 05000237/LER-1985-021-02, :on 850503,during Shutdown,Two Reactor Scrams Occurred from Intermediate Range Monitors 13 & 15 hi-hi Condition.Caused by Spurious Radio Repeater Signals. Relocation of Radio Repeaters Initiated
page: https://kanterella.com/05000237/LER-2D1985-2D021-2D02-2C_-3Aon_850503-2Cduring_Shutdown-2CTwo_Reactor_Scrams_Occurred_from_Intermediate_Range_Monitors_13_-26_15_hi-2Dhi_Condition.Caused_by_Spurious_Ra…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000237/LER-1985-021-02, :on 850503,during Shutdown,Two Reactor Scrams Occurred from Intermediate Range Monitors 13 & 15 hi-hi Condition.Caused by Spurious Radio Repeater Signals. Relocation of Radio Repeaters Initiated

Turbine Trip Occurred as Result of Steam Generator lo-lo Level Signal.Caused by Electronic Failure in Governor Controller of Main Feedwater Pump B.Component Replaced
type: Subject
label: 05000483/LER-1985-024, :on 850506,reactor Trip/Turbine Trip Occurred as Result of Steam Generator lo-lo Level Signal.Caused by Electronic Failure in Governor Controller of Main Feedwater Pump B.Component Replaced
page: https://kanterella.com/05000483/LER-2D1985-2D024-2C_-3Aon_850506-2Creactor_Trip/Turbine_Trip_Occurred_as_Result_of_Steam_Generator_lo-2Dlo_Level_Signal.Caused_by_Electronic_Failure_in_Governor_Control…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000483/LER-1985-024, :on 850506,reactor Trip/Turbine Trip Occurred as Result of Steam Generator lo-lo Level Signal.Caused by Electronic Failure in Governor Controller of Main Feedwater Pump B.Component Replaced

Malfunction
type: Subject
label: 05000270/LER-1985-005-04, :on 850426,unit Tripped from 75% Power on High RCS Pressure.Caused by Increase in Pressure Due to Spurious Signal from electro-hydraulic Controls Cabinet Due to Component Failure/Malfunction
page: https://kanterella.com/05000270/LER-2D1985-2D005-2D04-2C_-3Aon_850426-2Cunit_Tripped_from_75-_Power_on_High_RCS_Pressure.Caused_by_Increase_in_Pressure_Due_to_Spurious_Signal_from_electro-2Dhydraulic_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000270/LER-1985-005-04, :on 850426,unit Tripped from 75% Power on High RCS Pressure.Caused by Increase in Pressure Due to Spurious Signal from electro-hydraulic Controls Cabinet Due to Component Failure/Malfunction

LER-1985-021-04, :on 850603,when Instrument Bus Switched from Alternate to Normal Power,Momentary Power Loss Caused Reactor Trip.Caused by Switching Procedure Not Being Referenced.Warning Sign Placed at Switch
type: Subject
label: 05000295/LER-1985-021-04, :on 850603,when Instrument Bus Switched from Alternate to Normal Power,Momentary Power Loss Caused Reactor Trip.Caused by Switching Procedure Not Being Referenced.Warning Sign Placed at Switch
page: https://kanterella.com/05000295/LER-2D1985-2D021-2D04-2C_-3Aon_850603-2Cwhen_Instrument_Bus_Switched_from_Alternate_to_Normal_Power-2CMomentary_Power_Loss_Caused_Reactor_Trip.Caused_by_Switching_Proce…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000295/LER-1985-021-04, :on 850603,when Instrument Bus Switched from Alternate to Normal Power,Momentary Power Loss Caused Reactor Trip.Caused by Switching Procedure Not Being Referenced.Warning Sign Placed at Switch

LER-1985-015-01, :on 850421,spray Pond Bypass Valve HV-01222A Did Not Automatically Open When Emergency Svc Water Pump a Started.Caused by Two Open Sliding States Link Terminal Blocks in Relay Panel.Links Evaluated
type: Subject
label: 05000388/LER-1985-015-01, :on 850421,spray Pond Bypass Valve HV-01222A Did Not Automatically Open When Emergency Svc Water Pump a Started.Caused by Two Open Sliding States Link Terminal Blocks in Relay Panel.Links Evaluated
page: https://kanterella.com/05000388/LER-2D1985-2D015-2D01-2C_-3Aon_850421-2Cspray_Pond_Bypass_Valve_HV-2D01222A_Did_Not_Automatically_Open_When_Emergency_Svc_Water_Pump_a_Started.Caused_by_Two_Open_Slidin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000388/LER-1985-015-01, :on 850421,spray Pond Bypass Valve HV-01222A Did Not Automatically Open When Emergency Svc Water Pump a Started.Caused by Two Open Sliding States Link Terminal Blocks in Relay Panel.Links Evaluated

05000295/LER-1985-019-04, :on 850607,reactor Trip Resulted in High Steam Flow Safeguards Actuation,Closing All Msivs.Caused by Failure of Summator,Which Spiked Low.Module Replaced
type: Subject
page: https://kanterella.com/05000295/LER-2D1985-2D019-2D04-2C_-3Aon_850607-2Creactor_Trip_Resulted_in_High_Steam_Flow_Safeguards_Actuation-2CClosing_All_Msivs.Caused_by_Failure_of_Summator-2CWhich_Spiked_L…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000295/LER-1985-019-04, :on 850607,reactor Trip Resulted in High Steam Flow Safeguards Actuation,Closing All Msivs.Caused by Failure of Summator,Which Spiked Low.Module Replaced

05000259/LER-1985-008, :on 850318,HPCI & RCIC Turbine Exhaust Valve Flanged Bonnets Not Local Leak Tested in Accordance w/10CFR50,App J Requirements.All Valves Will Be Repaired & Pass Leak Test
type: Subject
page: https://kanterella.com/05000259/LER-2D1985-2D008-2C_-3Aon_850318-2CHPCI_-26_RCIC_Turbine_Exhaust_Valve_Flanged_Bonnets_Not_Local_Leak_Tested_in_Accordance_w/10CFR50-2CApp_J_Requirements.All_Valves_Wil…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1985-008, :on 850318,HPCI & RCIC Turbine Exhaust Valve Flanged Bonnets Not Local Leak Tested in Accordance w/10CFR50,App J Requirements.All Valves Will Be Repaired & Pass Leak Test

LER-1985-027, :on 850604,during Hydrostatic Testing,Three 8-inch Diameter Fire Penetrations Found Nonfunctional.Cause for Removal of Silicone Foam Undetermined.Openings Sealed & Safety Evaluation Performed
type: Subject
label: 05000315/LER-1985-027, :on 850604,during Hydrostatic Testing,Three 8-inch Diameter Fire Penetrations Found Nonfunctional.Cause for Removal of Silicone Foam Undetermined.Openings Sealed & Safety Evaluation Performed
page: https://kanterella.com/05000315/LER-2D1985-2D027-2C_-3Aon_850604-2Cduring_Hydrostatic_Testing-2CThree_8-2Dinch_Diameter_Fire_Penetrations_Found_Nonfunctional.Cause_for_Removal_of_Silicone_Foam_Undeter…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000315/LER-1985-027, :on 850604,during Hydrostatic Testing,Three 8-inch Diameter Fire Penetrations Found Nonfunctional.Cause for Removal of Silicone Foam Undetermined.Openings Sealed & Safety Evaluation Performed

LER-1984-013, :on 841122,during Startup After Cycle 5 Refueling,Hpci Outboard Steam Supply Isolation Valve Failed to Open.Caused by Motor Pinion Gears Being Installed Backwards.Gears Replaced in Proper Direction
type: Subject
label: 05000296/LER-1984-013, :on 841122,during Startup After Cycle 5 Refueling,Hpci Outboard Steam Supply Isolation Valve Failed to Open.Caused by Motor Pinion Gears Being Installed Backwards.Gears Replaced in Proper Direction
page: https://kanterella.com/05000296/LER-2D1984-2D013-2C_-3Aon_841122-2Cduring_Startup_After_Cycle_5_Refueling-2CHpci_Outboard_Steam_Supply_Isolation_Valve_Failed_to_Open.Caused_by_Motor_Pinion_Gears_Being…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000296/LER-1984-013, :on 841122,during Startup After Cycle 5 Refueling,Hpci Outboard Steam Supply Isolation Valve Failed to Open.Caused by Motor Pinion Gears Being Installed Backwards.Gears Replaced in Proper Direction

LER-1996-004-01, :on 960910,seismic Concerns Were Noted Re Containment Particulate & Gaseous Radiation Monitors.Caused by Personnel Error.Rms Were Declared Inoperable & RCS Leak Rate Calculations Were Initiated
type: Subject
label: 05000338/LER-1996-004-01, :on 960910,seismic Concerns Were Noted Re Containment Particulate & Gaseous Radiation Monitors.Caused by Personnel Error.Rms Were Declared Inoperable & RCS Leak Rate Calculations Were Initiated
page: https://kanterella.com/05000338/LER-2D1996-2D004-2D01-2C_-3Aon_960910-2Cseismic_Concerns_Were_Noted_Re_Containment_Particulate_-26_Gaseous_Radiation_Monitors.Caused_by_Personnel_Error.Rms_Were_Declare…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000338/LER-1996-004-01, :on 960910,seismic Concerns Were Noted Re Containment Particulate & Gaseous Radiation Monitors.Caused by Personnel Error.Rms Were Declared Inoperable & RCS Leak Rate Calculations Were Initiated

Procedural Deficiency.New Procedure Planned
type: Subject
label: 05000369/LER-1985-014-01, :on 850507,core Alterations Started W/O Completion of Required Surveillance on Source Range Neutron Flux Monitors While in Mode 6.Caused by Administrative/ Procedural Deficiency.New Procedure Planned
page: https://kanterella.com/05000369/LER-2D1985-2D014-2D01-2C_-3Aon_850507-2Ccore_Alterations_Started_W/O_Completion_of_Required_Surveillance_on_Source_Range_Neutron_Flux_Monitors_While_in_Mode_6.Caused_by…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-014-01, :on 850507,core Alterations Started W/O Completion of Required Surveillance on Source Range Neutron Flux Monitors While in Mode 6.Caused by Administrative/ Procedural Deficiency.New Procedure Planned

Restraints Damaged.Caused by Loose Packing in Valve.Damaged Piping Replaced
type: Subject
label: 05000370/LER-1984-017-01, :on 840806,broken Weld on RHR Sys Letdown Line to Chemical & Vol Control Sys Discovered.Insp Revealed Number of Supports/Restraints Damaged.Caused by Loose Packing in Valve.Damaged Piping Replaced
page: https://kanterella.com/05000370/LER-2D1984-2D017-2D01-2C_-3Aon_840806-2Cbroken_Weld_on_RHR_Sys_Letdown_Line_to_Chemical_-26_Vol_Control_Sys_Discovered.Insp_Revealed_Number_of_Supports/Restraints_Damag…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1984-017-01, :on 840806,broken Weld on RHR Sys Letdown Line to Chemical & Vol Control Sys Discovered.Insp Revealed Number of Supports/Restraints Damaged.Caused by Loose Packing in Valve.Damaged Piping Replaced

LER-1985-013-01, :on 850418,util Ofc of Engineering Determined That Existing Configuration of Startup Test Instrumentation Panels Cannot Be Determined to Be Seismically Qualified. Caused by Improper Mounting of Panels
type: Subject
label: 05000259/LER-1985-013-01, :on 850418,util Ofc of Engineering Determined That Existing Configuration of Startup Test Instrumentation Panels Cannot Be Determined to Be Seismically Qualified. Caused by Improper Mounting of Panels
page: https://kanterella.com/05000259/LER-2D1985-2D013-2D01-2C_-3Aon_850418-2Cutil_Ofc_of_Engineering_Determined_That_Existing_Configuration_of_Startup_Test_Instrumentation_Panels_Cannot_Be_Determined_to_Be…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1985-013-01, :on 850418,util Ofc of Engineering Determined That Existing Configuration of Startup Test Instrumentation Panels Cannot Be Determined to Be Seismically Qualified. Caused by Improper Mounting of Panels

LER-1985-010-02, :on 850502,vent Line Sight Glass Cracked & Valve Diaphragm Ruptured Due to Opening of Mislabeled Valve While Venting Upper Head Injection Piping.Caused by Administrative Error.Sight Glass & Valve Fixed
type: Subject
label: 05000370/LER-1985-010-02, :on 850502,vent Line Sight Glass Cracked & Valve Diaphragm Ruptured Due to Opening of Mislabeled Valve While Venting Upper Head Injection Piping.Caused by Administrative Error.Sight Glass & Valve Fixed
page: https://kanterella.com/05000370/LER-2D1985-2D010-2D02-2C_-3Aon_850502-2Cvent_Line_Sight_Glass_Cracked_-26_Valve_Diaphragm_Ruptured_Due_to_Opening_of_Mislabeled_Valve_While_Venting_Upper_Head_Injection…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1985-010-02, :on 850502,vent Line Sight Glass Cracked & Valve Diaphragm Ruptured Due to Opening of Mislabeled Valve While Venting Upper Head Injection Piping.Caused by Administrative Error.Sight Glass & Valve Fixed

Design Deficiency
type: Subject
label: 05000369/LER-1985-015-02, :on 850508,auxiliary & Reactor Bldg Side Door Lower Airlock Seals Deflated,Causing Loss of Containment Integrity.Caused by Maladjustment of Airlock Door Pin Limit Switches Combined W/Design Deficiency
page: https://kanterella.com/05000369/LER-2D1985-2D015-2D02-2C_-3Aon_850508-2Cauxiliary_-26_Reactor_Bldg_Side_Door_Lower_Airlock_Seals_Deflated-2CCausing_Loss_of_Containment_Integrity.Caused_by_Maladjustmen…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-015-02, :on 850508,auxiliary & Reactor Bldg Side Door Lower Airlock Seals Deflated,Causing Loss of Containment Integrity.Caused by Maladjustment of Airlock Door Pin Limit Switches Combined W/Design Deficiency

05000409/LER-1985-009, :on 850421,leak Developed in Seal Inject Supply Line to CRD Mechanisms.Caused by Rupture in High Pressure Hose Between Flow Orifice & Transmitter.Reactor Shutdown & Hose Plugged
type: Subject
page: https://kanterella.com/05000409/LER-2D1985-2D009-2C_-3Aon_850421-2Cleak_Developed_in_Seal_Inject_Supply_Line_to_CRD_Mechanisms.Caused_by_Rupture_in_High_Pressure_Hose_Between_Flow_Orifice_-26_Transmit…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000409/LER-1985-009, :on 850421,leak Developed in Seal Inject Supply Line to CRD Mechanisms.Caused by Rupture in High Pressure Hose Between Flow Orifice & Transmitter.Reactor Shutdown & Hose Plugged

LER-1985-016-01, :on 850508,discovered That Temp Compensation Chart Not Incorporated in Hydrogen Analyzer Operation Emergency Procedure.Caused by Procedural Deficiency.Temp Compensation Charts Incorporated in Procedure
type: Subject
label: 05000369/LER-1985-016-01, :on 850508,discovered That Temp Compensation Chart Not Incorporated in Hydrogen Analyzer Operation Emergency Procedure.Caused by Procedural Deficiency.Temp Compensation Charts Incorporated in Procedure
page: https://kanterella.com/05000369/LER-2D1985-2D016-2D01-2C_-3Aon_850508-2Cdiscovered_That_Temp_Compensation_Chart_Not_Incorporated_in_Hydrogen_Analyzer_Operation_Emergency_Procedure.Caused_by_Procedural…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-016-01, :on 850508,discovered That Temp Compensation Chart Not Incorporated in Hydrogen Analyzer Operation Emergency Procedure.Caused by Procedural Deficiency.Temp Compensation Charts Incorporated in Procedure

LER-1985-013-01, :on 850502,during Refueling,Gearcase Lubricating Grease Found in Electrical Compartments of Limitorque Motor Operated Valve Actuators 1VX-1A & 1VX-2B. Caused by Error During Previous Maint Work
type: Subject
label: 05000369/LER-1985-013-01, :on 850502,during Refueling,Gearcase Lubricating Grease Found in Electrical Compartments of Limitorque Motor Operated Valve Actuators 1VX-1A & 1VX-2B. Caused by Error During Previous Maint Work
page: https://kanterella.com/05000369/LER-2D1985-2D013-2D01-2C_-3Aon_850502-2Cduring_Refueling-2CGearcase_Lubricating_Grease_Found_in_Electrical_Compartments_of_Limitorque_Motor_Operated_Valve_Actuators_1VX…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1985-013-01, :on 850502,during Refueling,Gearcase Lubricating Grease Found in Electrical Compartments of Limitorque Motor Operated Valve Actuators 1VX-1A & 1VX-2B. Caused by Error During Previous Maint Work

LER-1984-032, :on 841219,seven Inoperable Fire Barrier Penetrations Discovered.Caused by Failure to Follow Procedures During Cable Pulling Activities.Penetrations Resealed.Personnel Will Be Retrained
type: Subject
label: 05000413/LER-1984-032, :on 841219,seven Inoperable Fire Barrier Penetrations Discovered.Caused by Failure to Follow Procedures During Cable Pulling Activities.Penetrations Resealed.Personnel Will Be Retrained
page: https://kanterella.com/05000413/LER-2D1984-2D032-2C_-3Aon_841219-2Cseven_Inoperable_Fire_Barrier_Penetrations_Discovered.Caused_by_Failure_to_Follow_Procedures_During_Cable_Pulling_Activities.Penetrat…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1984-032, :on 841219,seven Inoperable Fire Barrier Penetrations Discovered.Caused by Failure to Follow Procedures During Cable Pulling Activities.Penetrations Resealed.Personnel Will Be Retrained

LER-1985-012-02, :on 850508,during Attempt to Swap Main Feedwater Pump 2A from Auxiliary to Main Steam Supply,Pump Tripped on High Discharge Pressure.Caused by Control Sys Not Responding to Speed Controller
type: Subject
label: 05000370/LER-1985-012-02, :on 850508,during Attempt to Swap Main Feedwater Pump 2A from Auxiliary to Main Steam Supply,Pump Tripped on High Discharge Pressure.Caused by Control Sys Not Responding to Speed Controller
page: https://kanterella.com/05000370/LER-2D1985-2D012-2D02-2C_-3Aon_850508-2Cduring_Attempt_to_Swap_Main_Feedwater_Pump_2A_from_Auxiliary_to_Main_Steam_Supply-2CPump_Tripped_on_High_Discharge_Pressure.Caus…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1985-012-02, :on 850508,during Attempt to Swap Main Feedwater Pump 2A from Auxiliary to Main Steam Supply,Pump Tripped on High Discharge Pressure.Caused by Control Sys Not Responding to Speed Controller

05000424/LER-1996-009-01, :on 960808,leaking Valve Results in Fuel Handling Bldg Isolation.Down Stream Needle & Relief Valves Were Replaced
type: Subject
page: https://kanterella.com/05000424/LER-2D1996-2D009-2D01-2C_-3Aon_960808-2Cleaking_Valve_Results_in_Fuel_Handling_Bldg_Isolation.Down_Stream_Needle_-26_Relief_Valves_Were_Replaced
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000424/LER-1996-009-01, :on 960808,leaking Valve Results in Fuel Handling Bldg Isolation.Down Stream Needle & Relief Valves Were Replaced

LER-1996-001-05, :on 960418,inadvertent ESF Actuation & Loss of Power Signal & Load Sequencing Occurred During Maint. Caused by Personnel Error.Individual Involved in Event Was Counseled & Lessons Were Discussed
type: Subject
label: 05000328/LER-1996-001-05, :on 960418,inadvertent ESF Actuation & Loss of Power Signal & Load Sequencing Occurred During Maint. Caused by Personnel Error.Individual Involved in Event Was Counseled & Lessons Were Discussed
page: https://kanterella.com/05000328/LER-2D1996-2D001-2D05-2C_-3Aon_960418-2Cinadvertent_ESF_Actuation_-26_Loss_of_Power_Signal_-26_Load_Sequencing_Occurred_During_Maint._Caused_by_Personnel_Error.Individu…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1996-001-05, :on 960418,inadvertent ESF Actuation & Loss of Power Signal & Load Sequencing Occurred During Maint. Caused by Personnel Error.Individual Involved in Event Was Counseled & Lessons Were Discussed

LER-1985-015, :on 850404,RCIC Sys Inadvertently Isolated When Bypass Switch Mistakenly Returned to Normal During Testing.Caused by Misunderstanding Between Personnel.Sys Restored.Need for Clear Communication Stressed
type: Subject
label: 05000416/LER-1985-015, :on 850404,RCIC Sys Inadvertently Isolated When Bypass Switch Mistakenly Returned to Normal During Testing.Caused by Misunderstanding Between Personnel.Sys Restored.Need for Clear Communication Stressed
page: https://kanterella.com/05000416/LER-2D1985-2D015-2C_-3Aon_850404-2CRCIC_Sys_Inadvertently_Isolated_When_Bypass_Switch_Mistakenly_Returned_to_Normal_During_Testing.Caused_by_Misunderstanding_Between_Pe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000416/LER-1985-015, :on 850404,RCIC Sys Inadvertently Isolated When Bypass Switch Mistakenly Returned to Normal During Testing.Caused by Misunderstanding Between Personnel.Sys Restored.Need for Clear Communication Stressed

LER-1985-013, :on 850403,reactor Scrammed on High Water Level During Startup Testing.Caused by Failure of Level Channel Selector Switch.Switch Replaced & Precautionary Steps Added to Operating Instructions
type: Subject
label: 05000416/LER-1985-013, :on 850403,reactor Scrammed on High Water Level During Startup Testing.Caused by Failure of Level Channel Selector Switch.Switch Replaced & Precautionary Steps Added to Operating Instructions
page: https://kanterella.com/05000416/LER-2D1985-2D013-2C_-3Aon_850403-2Creactor_Scrammed_on_High_Water_Level_During_Startup_Testing.Caused_by_Failure_of_Level_Channel_Selector_Switch.Switch_Replaced_-26_Pr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000416/LER-1985-013, :on 850403,reactor Scrammed on High Water Level During Startup Testing.Caused by Failure of Level Channel Selector Switch.Switch Replaced & Precautionary Steps Added to Operating Instructions

LER-1985-004-01, :on 850116,surveillance Instructions (SI) on Fire Doors Not Performed within Tech Spec Time Limits.Caused by Personnel Error.Ltr Written to Personnel Stressing Correct Performance of SIs
type: Subject
label: 05000327/LER-1985-004-01, :on 850116,surveillance Instructions (SI) on Fire Doors Not Performed within Tech Spec Time Limits.Caused by Personnel Error.Ltr Written to Personnel Stressing Correct Performance of SIs
page: https://kanterella.com/05000327/LER-2D1985-2D004-2D01-2C_-3Aon_850116-2Csurveillance_Instructions_-28SI-29_on_Fire_Doors_Not_Performed_within_Tech_Spec_Time_Limits.Caused_by_Personnel_Error.Ltr_Writte…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1985-004-01, :on 850116,surveillance Instructions (SI) on Fire Doors Not Performed within Tech Spec Time Limits.Caused by Personnel Error.Ltr Written to Personnel Stressing Correct Performance of SIs

LER-1992-008-03, :on 921015,full PCIS Group I Actuation Occurred Which Caused Reactor Scram.Caused by Unexpected Actuation of Isolation Pressure Switches.Pcis & RPS Scram Logic Reset & Affected Sys Restored
type: Subject
label: 05000278/LER-1992-008-03, :on 921015,full PCIS Group I Actuation Occurred Which Caused Reactor Scram.Caused by Unexpected Actuation of Isolation Pressure Switches.Pcis & RPS Scram Logic Reset & Affected Sys Restored
page: https://kanterella.com/05000278/LER-2D1992-2D008-2D03-2C_-3Aon_921015-2Cfull_PCIS_Group_I_Actuation_Occurred_Which_Caused_Reactor_Scram.Caused_by_Unexpected_Actuation_of_Isolation_Pressure_Switches.Pc…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000278/LER-1992-008-03, :on 921015,full PCIS Group I Actuation Occurred Which Caused Reactor Scram.Caused by Unexpected Actuation of Isolation Pressure Switches.Pcis & RPS Scram Logic Reset & Affected Sys Restored

05000416/LER-1996-004-03, :on 960606,manual Reactor Scram Occurred Due to Spurious Multiple SRV Lifts.Replaced Trip Unit Card in Addition to Functionally Checking Other Card Files in Same Panel
type: Subject
page: https://kanterella.com/05000416/LER-2D1996-2D004-2D03-2C_-3Aon_960606-2Cmanual_Reactor_Scram_Occurred_Due_to_Spurious_Multiple_SRV_Lifts.Replaced_Trip_Unit_Card_in_Addition_to_Functionally_Checking_Ot…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000416/LER-1996-004-03, :on 960606,manual Reactor Scram Occurred Due to Spurious Multiple SRV Lifts.Replaced Trip Unit Card in Addition to Functionally Checking Other Card Files in Same Panel

05000382/LER-1996-013-01, :on 960822,possible Operation in Excess of 100% Licensed Power.Cause Is Being Investigated
type: Subject
page: https://kanterella.com/05000382/LER-2D1996-2D013-2D01-2C_-3Aon_960822-2Cpossible_Operation_in_Excess_of_100-_Licensed_Power.Cause_Is_Being_Investigated
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1996-013-01, :on 960822,possible Operation in Excess of 100% Licensed Power.Cause Is Being Investigated

05000318/LER-1996-002-01, :on 960522,fire Watch Missed.Caused by Personnel Error.Counseled Personnel Re Event
type: Subject
page: https://kanterella.com/05000318/LER-2D1996-2D002-2D01-2C_-3Aon_960522-2Cfire_Watch_Missed.Caused_by_Personnel_Error.Counseled_Personnel_Re_Event
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000318/LER-1996-002-01, :on 960522,fire Watch Missed.Caused by Personnel Error.Counseled Personnel Re Event

LER-1996-005, :on 960430,reactor Scram Occurred on Low Water Level Due to Personnel Error.Discussion of Event Issued to Operators & Interim Guidance Issued to Operators on Reactor Water Level Control
type: Subject
label: 05000219/LER-1996-005, :on 960430,reactor Scram Occurred on Low Water Level Due to Personnel Error.Discussion of Event Issued to Operators & Interim Guidance Issued to Operators on Reactor Water Level Control
page: https://kanterella.com/05000219/LER-2D1996-2D005-2C_-3Aon_960430-2Creactor_Scram_Occurred_on_Low_Water_Level_Due_to_Personnel_Error.Discussion_of_Event_Issued_to_Operators_-26_Interim_Guidance_Issued_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000219/LER-1996-005, :on 960430,reactor Scram Occurred on Low Water Level Due to Personnel Error.Discussion of Event Issued to Operators & Interim Guidance Issued to Operators on Reactor Water Level Control

Carbon Steel Filler Matl.Caused by Const Isometrics Incorrectly Specifying Matls Which Led to Use of Incorrect Welding Procedure
type: Subject
label: 05000413/LER-1985-014, :on 850222,stainless Steel Valves Discovered Installed W/Carbon Steel Filler Matl.Caused by Const Isometrics Incorrectly Specifying Matls Which Led to Use of Incorrect Welding Procedure
page: https://kanterella.com/05000413/LER-2D1985-2D014-2C_-3Aon_850222-2Cstainless_Steel_Valves_Discovered_Installed_W/Carbon_Steel_Filler_Matl.Caused_by_Const_Isometrics_Incorrectly_Specifying_Matls_Which_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-014, :on 850222,stainless Steel Valves Discovered Installed W/Carbon Steel Filler Matl.Caused by Const Isometrics Incorrectly Specifying Matls Which Led to Use of Incorrect Welding Procedure

LER-1985-015, :on 850302,breakers Not Locked in Off Position on Certain Safety Injection & Auxiliary Feedwater Pump Motors.Caused by Administrative Deficiency & Personnel Error.Procedure Revised
type: Subject
label: 05000413/LER-1985-015, :on 850302,breakers Not Locked in Off Position on Certain Safety Injection & Auxiliary Feedwater Pump Motors.Caused by Administrative Deficiency & Personnel Error.Procedure Revised
page: https://kanterella.com/05000413/LER-2D1985-2D015-2C_-3Aon_850302-2Cbreakers_Not_Locked_in_Off_Position_on_Certain_Safety_Injection_-26_Auxiliary_Feedwater_Pump_Motors.Caused_by_Administrative_Deficien…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-015, :on 850302,breakers Not Locked in Off Position on Certain Safety Injection & Auxiliary Feedwater Pump Motors.Caused by Administrative Deficiency & Personnel Error.Procedure Revised

LER-1996-004, :on 960315,discovered Adequate Shutdown Margin Was Not Maintained.Caused by Inadequate Technical Review by Plant Personnel Involved in Reviewing Procedure Change. Appropriate Personnel Trained on Incident
type: Subject
label: 05000285/LER-1996-004, :on 960315,discovered Adequate Shutdown Margin Was Not Maintained.Caused by Inadequate Technical Review by Plant Personnel Involved in Reviewing Procedure Change. Appropriate Personnel Trained on Incident
page: https://kanterella.com/05000285/LER-2D1996-2D004-2C_-3Aon_960315-2Cdiscovered_Adequate_Shutdown_Margin_Was_Not_Maintained.Caused_by_Inadequate_Technical_Review_by_Plant_Personnel_Involved_in_Reviewing…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1996-004, :on 960315,discovered Adequate Shutdown Margin Was Not Maintained.Caused by Inadequate Technical Review by Plant Personnel Involved in Reviewing Procedure Change. Appropriate Personnel Trained on Incident

LER-1984-031, :on 841124,trip Occurred Due to Failure of Loop Power Supply Card in Process Control Sys Causing Downward Spike in Channel of Overtemp Differential Temp Setpoint Circuit.Caused by Poor Cable Connection
type: Subject
label: 05000370/LER-1984-031, :on 841124,trip Occurred Due to Failure of Loop Power Supply Card in Process Control Sys Causing Downward Spike in Channel of Overtemp Differential Temp Setpoint Circuit.Caused by Poor Cable Connection
page: https://kanterella.com/05000370/LER-2D1984-2D031-2C_-3Aon_841124-2Ctrip_Occurred_Due_to_Failure_of_Loop_Power_Supply_Card_in_Process_Control_Sys_Causing_Downward_Spike_in_Channel_of_Overtemp_Different…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1984-031, :on 841124,trip Occurred Due to Failure of Loop Power Supply Card in Process Control Sys Causing Downward Spike in Channel of Overtemp Differential Temp Setpoint Circuit.Caused by Poor Cable Connection

LER-1984-025-03, :on 841127,motor Driven Auxiliary Feedwater Pumps Started After Loss of Main Feedwater Pumps When Reactor Trip Breakers Opened to Support Rod Drop Timing Test.Caused by Personnel Error
type: Subject
label: 05000413/LER-1984-025-03, :on 841127,motor Driven Auxiliary Feedwater Pumps Started After Loss of Main Feedwater Pumps When Reactor Trip Breakers Opened to Support Rod Drop Timing Test.Caused by Personnel Error
page: https://kanterella.com/05000413/LER-2D1984-2D025-2D03-2C_-3Aon_841127-2Cmotor_Driven_Auxiliary_Feedwater_Pumps_Started_After_Loss_of_Main_Feedwater_Pumps_When_Reactor_Trip_Breakers_Opened_to_Support_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1984-025-03, :on 841127,motor Driven Auxiliary Feedwater Pumps Started After Loss of Main Feedwater Pumps When Reactor Trip Breakers Opened to Support Rod Drop Timing Test.Caused by Personnel Error

05000413/LER-1985-009, :on 850131,during Loss of Control Room Functional Test,Safety Injection Occurred.Caused by Component Malfunction.Safety Injection Reset,Closing Cold Leg Safety Injection Valve
type: Subject
page: https://kanterella.com/05000413/LER-2D1985-2D009-2C_-3Aon_850131-2Cduring_Loss_of_Control_Room_Functional_Test-2CSafety_Injection_Occurred.Caused_by_Component_Malfunction.Safety_Injection_Reset-2CClos…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-009, :on 850131,during Loss of Control Room Functional Test,Safety Injection Occurred.Caused by Component Malfunction.Safety Injection Reset,Closing Cold Leg Safety Injection Valve

LER-1996-003-03, :on 960403,Unit 2 Received Unplanned ESF Actuation.Caused by Electrician Introduced Fault Into ECCS Logic While Preparing Wires for Termination in Panel 2-9-81. Problem Evaluation Rept Initiated
type: Subject
label: 05000259/LER-1996-003-03, :on 960403,Unit 2 Received Unplanned ESF Actuation.Caused by Electrician Introduced Fault Into ECCS Logic While Preparing Wires for Termination in Panel 2-9-81. Problem Evaluation Rept Initiated
page: https://kanterella.com/05000259/LER-2D1996-2D003-2D03-2C_-3Aon_960403-2CUnit_2_Received_Unplanned_ESF_Actuation.Caused_by_Electrician_Introduced_Fault_Into_ECCS_Logic_While_Preparing_Wires_for_Termina…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1996-003-03, :on 960403,Unit 2 Received Unplanned ESF Actuation.Caused by Electrician Introduced Fault Into ECCS Logic While Preparing Wires for Termination in Panel 2-9-81. Problem Evaluation Rept Initiated

LER-1985-006, :on 850207,RCIC Turbine Steam Supply Inboard Isolation Valve Isolated on Spurious RHR Equipment Area High Ambient Temp Signal.Cause Undetermined.Alarm Invalid & RCIC Sys Returned to Standby
type: Subject
label: 05000416/LER-1985-006, :on 850207,RCIC Turbine Steam Supply Inboard Isolation Valve Isolated on Spurious RHR Equipment Area High Ambient Temp Signal.Cause Undetermined.Alarm Invalid & RCIC Sys Returned to Standby
page: https://kanterella.com/05000416/LER-2D1985-2D006-2C_-3Aon_850207-2CRCIC_Turbine_Steam_Supply_Inboard_Isolation_Valve_Isolated_on_Spurious_RHR_Equipment_Area_High_Ambient_Temp_Signal.Cause_Undetermined…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000416/LER-1985-006, :on 850207,RCIC Turbine Steam Supply Inboard Isolation Valve Isolated on Spurious RHR Equipment Area High Ambient Temp Signal.Cause Undetermined.Alarm Invalid & RCIC Sys Returned to Standby

O Lock & Chain Installed.Caused by Personnel Error. Procedures Will Be Reviewed & Revised,If Necessary,To Reflect Proper Locked Valve Requirements
type: Subject
label: 05000370/LER-1985-001-02, :on 850123,nuclear Svc Water Sys Valve 2RN-158 Found W/O Lock & Chain Installed.Caused by Personnel Error. Procedures Will Be Reviewed & Revised,If Necessary,To Reflect Proper Locked Valve Requirements
page: https://kanterella.com/05000370/LER-2D1985-2D001-2D02-2C_-3Aon_850123-2Cnuclear_Svc_Water_Sys_Valve_2RN-2D158_Found_W/O_Lock_-26_Chain_Installed.Caused_by_Personnel_Error._Procedures_Will_Be_Reviewed_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1985-001-02, :on 850123,nuclear Svc Water Sys Valve 2RN-158 Found W/O Lock & Chain Installed.Caused by Personnel Error. Procedures Will Be Reviewed & Revised,If Necessary,To Reflect Proper Locked Valve Requirements

05000327/LER-1984-063, :on 841018,noncompliance of safety-related Sys w/10CFR50,App R Noted.No Cause Stated.Fire Watches Utilized. Implementation Schedule of Corrective Actions Expected by 850101
type: Subject
page: https://kanterella.com/05000327/LER-2D1984-2D063-2C_-3Aon_841018-2Cnoncompliance_of_safety-2Drelated_Sys_w/10CFR50-2CApp_R_Noted.No_Cause_Stated.Fire_Watches_Utilized._Implementation_Schedule_of_Corre…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1984-063, :on 841018,noncompliance of safety-related Sys w/10CFR50,App R Noted.No Cause Stated.Fire Watches Utilized. Implementation Schedule of Corrective Actions Expected by 850101

LER-1996-002, :on 960329,reactor Manually Tripped Due to Partial Loss of Vacuum in Main Condenser.Condenser Isolated, Plant Shutdown & Leaking Condenser Tube Plugged.Pm Order WP-006820 Will Be Revised
type: Subject
label: 05000285/LER-1996-002, :on 960329,reactor Manually Tripped Due to Partial Loss of Vacuum in Main Condenser.Condenser Isolated, Plant Shutdown & Leaking Condenser Tube Plugged.Pm Order WP-006820 Will Be Revised
page: https://kanterella.com/05000285/LER-2D1996-2D002-2C_-3Aon_960329-2Creactor_Manually_Tripped_Due_to_Partial_Loss_of_Vacuum_in_Main_Condenser.Condenser_Isolated-2C_Plant_Shutdown_-26_Leaking_Condenser_T…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1996-002, :on 960329,reactor Manually Tripped Due to Partial Loss of Vacuum in Main Condenser.Condenser Isolated, Plant Shutdown & Leaking Condenser Tube Plugged.Pm Order WP-006820 Will Be Revised

LER-1984-025, :on 840826 & 30,turbine Driven Auxiliary Feedwater Pump Experienced Reverse Rotation,Causing Overpressurization of Pump Suction Piping.Caused by Leaking Swing Check Valve.Leaking Valve Replaced
type: Subject
label: 05000370/LER-1984-025, :on 840826 & 30,turbine Driven Auxiliary Feedwater Pump Experienced Reverse Rotation,Causing Overpressurization of Pump Suction Piping.Caused by Leaking Swing Check Valve.Leaking Valve Replaced
page: https://kanterella.com/05000370/LER-2D1984-2D025-2C_-3Aon_840826_-26_30-2Cturbine_Driven_Auxiliary_Feedwater_Pump_Experienced_Reverse_Rotation-2CCausing_Overpressurization_of_Pump_Suction_Piping.Cause…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1984-025, :on 840826 & 30,turbine Driven Auxiliary Feedwater Pump Experienced Reverse Rotation,Causing Overpressurization of Pump Suction Piping.Caused by Leaking Swing Check Valve.Leaking Valve Replaced

LER-1985-006, :on 850120,hot Standby Initiated After Reactor Coolant Average Temp Could Not Be Increased to Greater than 541 F 15 Minutes After Temp Decrease During Performance of Natural Circulation Verification Test
type: Subject
label: 05000413/LER-1985-006, :on 850120,hot Standby Initiated After Reactor Coolant Average Temp Could Not Be Increased to Greater than 541 F 15 Minutes After Temp Decrease During Performance of Natural Circulation Verification Test
page: https://kanterella.com/05000413/LER-2D1985-2D006-2C_-3Aon_850120-2Chot_Standby_Initiated_After_Reactor_Coolant_Average_Temp_Could_Not_Be_Increased_to_Greater_than_541_F_15_Minutes_After_Temp_Decrease_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-006, :on 850120,hot Standby Initiated After Reactor Coolant Average Temp Could Not Be Increased to Greater than 541 F 15 Minutes After Temp Decrease During Performance of Natural Circulation Verification Test

05000352/LER-1985-008, :on 850112,reactor Water Cleanup Sys Isolated. Caused by Blown Fuse in Nuclear Supply Shutoff Sys Logic. Fuse Replaced
type: Subject
page: https://kanterella.com/05000352/LER-2D1985-2D008-2C_-3Aon_850112-2Creactor_Water_Cleanup_Sys_Isolated._Caused_by_Blown_Fuse_in_Nuclear_Supply_Shutoff_Sys_Logic._Fuse_Replaced
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000352/LER-1985-008, :on 850112,reactor Water Cleanup Sys Isolated. Caused by Blown Fuse in Nuclear Supply Shutoff Sys Logic. Fuse Replaced

05000370/LER-1984-024, :on 840916,abnormally High Number of rate-of-rise Fire Detector Failures Discovered in Diesel Generator 2B Room.Caused by Improper Detector Application. Detectors Replaced
type: Subject
page: https://kanterella.com/05000370/LER-2D1984-2D024-2C_-3Aon_840916-2Cabnormally_High_Number_of_rate-2Dof-2Drise_Fire_Detector_Failures_Discovered_in_Diesel_Generator_2B_Room.Caused_by_Improper_Detector_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1984-024, :on 840916,abnormally High Number of rate-of-rise Fire Detector Failures Discovered in Diesel Generator 2B Room.Caused by Improper Detector Application. Detectors Replaced

05000296/LER-1985-003-02, :on 850111,during Scheduled Test,Hpci & RCIC Sys Failed to Reach Rated Flow within Allotted Time.Hpci Sys Declared Inoperable.Caused by Incorrect Setting of Limit Switch
type: Subject
page: https://kanterella.com/05000296/LER-2D1985-2D003-2D02-2C_-3Aon_850111-2Cduring_Scheduled_Test-2CHpci_-26_RCIC_Sys_Failed_to_Reach_Rated_Flow_within_Allotted_Time.Hpci_Sys_Declared_Inoperable.Caused_by…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000296/LER-1985-003-02, :on 850111,during Scheduled Test,Hpci & RCIC Sys Failed to Reach Rated Flow within Allotted Time.Hpci Sys Declared Inoperable.Caused by Incorrect Setting of Limit Switch

LER-1985-002-02, :on 850112,reactor Tripped on lo-lo Steam Generator Level & Train a Reactor Trip Breaker Failed to Open Automatically.Caused by Failure of Pump Discharge Valve LCV-6-106A.Valve Repaired
type: Subject
label: 05000328/LER-1985-002-02, :on 850112,reactor Tripped on lo-lo Steam Generator Level & Train a Reactor Trip Breaker Failed to Open Automatically.Caused by Failure of Pump Discharge Valve LCV-6-106A.Valve Repaired
page: https://kanterella.com/05000328/LER-2D1985-2D002-2D02-2C_-3Aon_850112-2Creactor_Tripped_on_lo-2Dlo_Steam_Generator_Level_-26_Train_a_Reactor_Trip_Breaker_Failed_to_Open_Automatically.Caused_by_Failure…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1985-002-02, :on 850112,reactor Tripped on lo-lo Steam Generator Level & Train a Reactor Trip Breaker Failed to Open Automatically.Caused by Failure of Pump Discharge Valve LCV-6-106A.Valve Repaired

LER-1985-003, :on 850109,during Monthly Testing of Solid State Protection Sys,Reactor Trip Breaker Opened on High Flux Source Range Reactor Trip Signal.Caused by Procedural Deficiency.Procedure Revised
type: Subject
label: 05000413/LER-1985-003, :on 850109,during Monthly Testing of Solid State Protection Sys,Reactor Trip Breaker Opened on High Flux Source Range Reactor Trip Signal.Caused by Procedural Deficiency.Procedure Revised
page: https://kanterella.com/05000413/LER-2D1985-2D003-2C_-3Aon_850109-2Cduring_Monthly_Testing_of_Solid_State_Protection_Sys-2CReactor_Trip_Breaker_Opened_on_High_Flux_Source_Range_Reactor_Trip_Signal.Caus…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-003, :on 850109,during Monthly Testing of Solid State Protection Sys,Reactor Trip Breaker Opened on High Flux Source Range Reactor Trip Signal.Caused by Procedural Deficiency.Procedure Revised

LER-1984-034, :on 841221,reactor Actuation Occurred When Inverter Erroneously Removed from Svc.Caused by Operator Failing to Properly Identify Component to Be Removed from Svc.Personnel Counseled.Trip Setpoints Reset
type: Subject
label: 05000370/LER-1984-034, :on 841221,reactor Actuation Occurred When Inverter Erroneously Removed from Svc.Caused by Operator Failing to Properly Identify Component to Be Removed from Svc.Personnel Counseled.Trip Setpoints Reset
page: https://kanterella.com/05000370/LER-2D1984-2D034-2C_-3Aon_841221-2Creactor_Actuation_Occurred_When_Inverter_Erroneously_Removed_from_Svc.Caused_by_Operator_Failing_to_Properly_Identify_Component_to_Be…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000370/LER-1984-034, :on 841221,reactor Actuation Occurred When Inverter Erroneously Removed from Svc.Caused by Operator Failing to Properly Identify Component to Be Removed from Svc.Personnel Counseled.Trip Setpoints Reset

Fire Protection Hose Stations Not Performed as Required by Ts.Caused by Inadequate Procedure Rev.Entered Action of LCO & Established Measures to Address Issue
type: Subject
label: 05000327/LER-1996-002-01, :on 960215,SRs Associated W/Fire Protection Hose Stations Not Performed as Required by Ts.Caused by Inadequate Procedure Rev.Entered Action of LCO & Established Measures to Address Issue
page: https://kanterella.com/05000327/LER-2D1996-2D002-2D01-2C_-3Aon_960215-2CSRs_Associated_W/Fire_Protection_Hose_Stations_Not_Performed_as_Required_by_Ts.Caused_by_Inadequate_Procedure_Rev.Entered_Action…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1996-002-01, :on 960215,SRs Associated W/Fire Protection Hose Stations Not Performed as Required by Ts.Caused by Inadequate Procedure Rev.Entered Action of LCO & Established Measures to Address Issue

05000354/LER-1996-001, :on 960113,safety & Turbine Acs Heat Exchangers Fouled W/Detritus Occurred Due to Failed Svc Water Strainer. Strainers Replaced & Enhanced Maint & Design Mod
type: Subject
page: https://kanterella.com/05000354/LER-2D1996-2D001-2C_-3Aon_960113-2Csafety_-26_Turbine_Acs_Heat_Exchangers_Fouled_W/Detritus_Occurred_Due_to_Failed_Svc_Water_Strainer._Strainers_Replaced_-26_Enhanced_M…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000354/LER-1996-001, :on 960113,safety & Turbine Acs Heat Exchangers Fouled W/Detritus Occurred Due to Failed Svc Water Strainer. Strainers Replaced & Enhanced Maint & Design Mod

05000369/LER-1984-028, :on 840712,design Deficiency Reported in Relief Capacity of Component Cooling Water Sys Surge Tank.Cause Not Stated.Increased Relief Capacity for Surge Tanks Will Be Added
type: Subject
page: https://kanterella.com/05000369/LER-2D1984-2D028-2C_-3Aon_840712-2Cdesign_Deficiency_Reported_in_Relief_Capacity_of_Component_Cooling_Water_Sys_Surge_Tank.Cause_Not_Stated.Increased_Relief_Capacity_fo…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1984-028, :on 840712,design Deficiency Reported in Relief Capacity of Component Cooling Water Sys Surge Tank.Cause Not Stated.Increased Relief Capacity for Surge Tanks Will Be Added

05000413/LER-1985-019, :on 850307,during Performance of Analog Channel Operational Test,Steam Generator C Level Channel 4 Found Inoperable.Caused by Personnel Error.Circuit Card Replaced
type: Subject
page: https://kanterella.com/05000413/LER-2D1985-2D019-2C_-3Aon_850307-2Cduring_Performance_of_Analog_Channel_Operational_Test-2CSteam_Generator_C_Level_Channel_4_Found_Inoperable.Caused_by_Personnel_Error.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1985-019, :on 850307,during Performance of Analog Channel Operational Test,Steam Generator C Level Channel 4 Found Inoperable.Caused by Personnel Error.Circuit Card Replaced

LER-1985-003-02, :on 850222,emergency Safeguard Features Actuation Sys Setpoint Adjusted to 1,600 Psig.Caused by B&W Reanalysis of Small Break LOCA Transients,Per NUREG-0737. Setpoint Changes Initiated
type: Subject
label: 05000269/LER-1985-003-02, :on 850222,emergency Safeguard Features Actuation Sys Setpoint Adjusted to 1,600 Psig.Caused by B&W Reanalysis of Small Break LOCA Transients,Per NUREG-0737. Setpoint Changes Initiated
page: https://kanterella.com/05000269/LER-2D1985-2D003-2D02-2C_-3Aon_850222-2Cemergency_Safeguard_Features_Actuation_Sys_Setpoint_Adjusted_to_1-2C600_Psig.Caused_by_B-26W_Reanalysis_of_Small_Break_LOCA_Tran…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1985-003-02, :on 850222,emergency Safeguard Features Actuation Sys Setpoint Adjusted to 1,600 Psig.Caused by B&W Reanalysis of Small Break LOCA Transients,Per NUREG-0737. Setpoint Changes Initiated

05000395/LER-1985-003, :on 850228,during Reactor Startup,Reactor Trip Occurred on High Flux Positive Rate Trip.Caused by Operator Failure to Adhere to Procedures.Operator Counseled. Procedures Revised
type: Subject
page: https://kanterella.com/05000395/LER-2D1985-2D003-2C_-3Aon_850228-2Cduring_Reactor_Startup-2CReactor_Trip_Occurred_on_High_Flux_Positive_Rate_Trip.Caused_by_Operator_Failure_to_Adhere_to_Procedures.Ope…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000395/LER-1985-003, :on 850228,during Reactor Startup,Reactor Trip Occurred on High Flux Positive Rate Trip.Caused by Operator Failure to Adhere to Procedures.Operator Counseled. Procedures Revised

LER-1985-010, :on 850222,automatic Actuation of balance-of- Plant ESF Actuation Sys Occurred When Placing Train a Sequencer in Manual from Automatic Mode.Caused by Unique Circumstances Involving flip-flop U-14
type: Subject
label: 05000528/LER-1985-010, :on 850222,automatic Actuation of balance-of- Plant ESF Actuation Sys Occurred When Placing Train a Sequencer in Manual from Automatic Mode.Caused by Unique Circumstances Involving flip-flop U-14
page: https://kanterella.com/05000528/LER-2D1985-2D010-2C_-3Aon_850222-2Cautomatic_Actuation_of_balance-2Dof-2D_Plant_ESF_Actuation_Sys_Occurred_When_Placing_Train_a_Sequencer_in_Manual_from_Automatic_Mode.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000528/LER-1985-010, :on 850222,automatic Actuation of balance-of- Plant ESF Actuation Sys Occurred When Placing Train a Sequencer in Manual from Automatic Mode.Caused by Unique Circumstances Involving flip-flop U-14

LER-1985-002-03, :on 850215,svc Water Isolated to Charging Pump Intermediate Seal Cooler & Component Cooling Water Isolated.Caused by Valve Misposition Due to Operator Error. Valve Repositioned & Personnel Counseled
type: Subject
label: 05000281/LER-1985-002-03, :on 850215,svc Water Isolated to Charging Pump Intermediate Seal Cooler & Component Cooling Water Isolated.Caused by Valve Misposition Due to Operator Error. Valve Repositioned & Personnel Counseled
page: https://kanterella.com/05000281/LER-2D1985-2D002-2D03-2C_-3Aon_850215-2Csvc_Water_Isolated_to_Charging_Pump_Intermediate_Seal_Cooler_-26_Component_Cooling_Water_Isolated.Caused_by_Valve_Misposition_Du…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000281/LER-1985-002-03, :on 850215,svc Water Isolated to Charging Pump Intermediate Seal Cooler & Component Cooling Water Isolated.Caused by Valve Misposition Due to Operator Error. Valve Repositioned & Personnel Counseled

LER-1985-004-02, :on 850215 & 17,reactor Trips Occurred Due to lo-lo Steam Generator Water Level.Caused by Personnel Error & Failed Filter Cartridge Cover.New Cover Installed & Personnel Counseled
type: Subject
label: 05000328/LER-1985-004-02, :on 850215 & 17,reactor Trips Occurred Due to lo-lo Steam Generator Water Level.Caused by Personnel Error & Failed Filter Cartridge Cover.New Cover Installed & Personnel Counseled
page: https://kanterella.com/05000328/LER-2D1985-2D004-2D02-2C_-3Aon_850215_-26_17-2Creactor_Trips_Occurred_Due_to_lo-2Dlo_Steam_Generator_Water_Level.Caused_by_Personnel_Error_-26_Failed_Filter_Cartridge_C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1985-004-02, :on 850215 & 17,reactor Trips Occurred Due to lo-lo Steam Generator Water Level.Caused by Personnel Error & Failed Filter Cartridge Cover.New Cover Installed & Personnel Counseled

05000416/LER-1985-009, :on 850215,ESF Actuated Due to Pressure Disturbance on Instrument Ref Leg.Caused by Technician Restoring Vessel Level Instrument to Svc.All Sys Returned to Normal Status
type: Subject
page: https://kanterella.com/05000416/LER-2D1985-2D009-2C_-3Aon_850215-2CESF_Actuated_Due_to_Pressure_Disturbance_on_Instrument_Ref_Leg.Caused_by_Technician_Restoring_Vessel_Level_Instrument_to_Svc.All_Sys_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000416/LER-1985-009, :on 850215,ESF Actuated Due to Pressure Disturbance on Instrument Ref Leg.Caused by Technician Restoring Vessel Level Instrument to Svc.All Sys Returned to Normal Status

05000413/LER-1984-018-02, :on 841023,in-core Thermocouple Tube Leakage Occurred.Caused by Separation of Stainless Steel Conduit from Swagelok Tube Fitting.Thermocouple Replaced
type: Subject
page: https://kanterella.com/05000413/LER-2D1984-2D018-2D02-2C_-3Aon_841023-2Cin-2Dcore_Thermocouple_Tube_Leakage_Occurred.Caused_by_Separation_of_Stainless_Steel_Conduit_from_Swagelok_Tube_Fitting.Thermoco…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1984-018-02, :on 841023,in-core Thermocouple Tube Leakage Occurred.Caused by Separation of Stainless Steel Conduit from Swagelok Tube Fitting.Thermocouple Replaced

LER-1985-008, :on 850203,short Circuit on Terminal Board for Radiation Monitor R-21 Vacuum Pump Occurred.Caused by Decontamination Activities Using Pressurized Water.Faulty Circuit Isolated & Feeder Breaker Replaced
type: Subject
label: 05000261/LER-1985-008, :on 850203,short Circuit on Terminal Board for Radiation Monitor R-21 Vacuum Pump Occurred.Caused by Decontamination Activities Using Pressurized Water.Faulty Circuit Isolated & Feeder Breaker Replaced
page: https://kanterella.com/05000261/LER-2D1985-2D008-2C_-3Aon_850203-2Cshort_Circuit_on_Terminal_Board_for_Radiation_Monitor_R-2D21_Vacuum_Pump_Occurred.Caused_by_Decontamination_Activities_Using_Pressuri…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000261/LER-1985-008, :on 850203,short Circuit on Terminal Board for Radiation Monitor R-21 Vacuum Pump Occurred.Caused by Decontamination Activities Using Pressurized Water.Faulty Circuit Isolated & Feeder Breaker Replaced

05000316/LER-1985-004-01, :on 850125,RCS Loop 2 Cold Leg Temp Found Not Environmentally Qualified.On 850126,unit Trip Occurred. Caused by Unrelated Component Failure.Loop Replaced W/Qualified Spare
type: Subject
page: https://kanterella.com/05000316/LER-2D1985-2D004-2D01-2C_-3Aon_850125-2CRCS_Loop_2_Cold_Leg_Temp_Found_Not_Environmentally_Qualified.On_850126-2Cunit_Trip_Occurred._Caused_by_Unrelated_Component_Failu…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000316/LER-1985-004-01, :on 850125,RCS Loop 2 Cold Leg Temp Found Not Environmentally Qualified.On 850126,unit Trip Occurred. Caused by Unrelated Component Failure.Loop Replaced W/Qualified Spare

LER-1984-014-01, :on 840830,lo-lo Steam Generator Reactor Trip Occurred.Caused by Main Feedwater Isolation Valve Failing to Close Due to Stuck Contact & Main Feedwater Pump B Reset Due to Incorrect Solenoid Valve Setting
type: Subject
label: 05000328/LER-1984-014-01, :on 840830,lo-lo Steam Generator Reactor Trip Occurred.Caused by Main Feedwater Isolation Valve Failing to Close Due to Stuck Contact & Main Feedwater Pump B Reset Due to Incorrect Solenoid Valve Setting
page: https://kanterella.com/05000328/LER-2D1984-2D014-2D01-2C_-3Aon_840830-2Clo-2Dlo_Steam_Generator_Reactor_Trip_Occurred.Caused_by_Main_Feedwater_Isolation_Valve_Failing_to_Close_Due_to_Stuck_Contact_-26…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1984-014-01, :on 840830,lo-lo Steam Generator Reactor Trip Occurred.Caused by Main Feedwater Isolation Valve Failing to Close Due to Stuck Contact & Main Feedwater Pump B Reset Due to Incorrect Solenoid Valve Setting

LER-1985-007-01, :on 850128,four 480-volt Undervoltage Relays on Emergency Buses E1 & E2 Discovered Out of Tolerance. Caused by Overly Restrictive Tech Spec Setpoint Description. Tech Spec Rev Requested
type: Subject
label: 05000261/LER-1985-007-01, :on 850128,four 480-volt Undervoltage Relays on Emergency Buses E1 & E2 Discovered Out of Tolerance. Caused by Overly Restrictive Tech Spec Setpoint Description. Tech Spec Rev Requested
page: https://kanterella.com/05000261/LER-2D1985-2D007-2D01-2C_-3Aon_850128-2Cfour_480-2Dvolt_Undervoltage_Relays_on_Emergency_Buses_E1_-26_E2_Discovered_Out_of_Tolerance._Caused_by_Overly_Restrictive_Tech_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000261/LER-1985-007-01, :on 850128,four 480-volt Undervoltage Relays on Emergency Buses E1 & E2 Discovered Out of Tolerance. Caused by Overly Restrictive Tech Spec Setpoint Description. Tech Spec Rev Requested

LER-1984-003-04, :on 840830,post-irradiation Exam Gamma Ray Scanner Rotated So One End Momentarily Suspended Over Spent Fuel Assembly in Spent Fuel Pool.Caused by Insufficient Number of Spent Fuel Assemblies
type: Subject
label: 05000269/LER-1984-003-04, :on 840830,post-irradiation Exam Gamma Ray Scanner Rotated So One End Momentarily Suspended Over Spent Fuel Assembly in Spent Fuel Pool.Caused by Insufficient Number of Spent Fuel Assemblies
page: https://kanterella.com/05000269/LER-2D1984-2D003-2D04-2C_-3Aon_840830-2Cpost-2Dirradiation_Exam_Gamma_Ray_Scanner_Rotated_So_One_End_Momentarily_Suspended_Over_Spent_Fuel_Assembly_in_Spent_Fuel_Pool.C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1984-003-04, :on 840830,post-irradiation Exam Gamma Ray Scanner Rotated So One End Momentarily Suspended Over Spent Fuel Assembly in Spent Fuel Pool.Caused by Insufficient Number of Spent Fuel Assemblies

05000328/LER-1992-008, :on 920627,reactor Tripped.Caused by Varying Resistance Readings Substandard Workmanship.Plant Instruction Written to Provide Guidance
type: Subject
page: https://kanterella.com/05000328/LER-2D1992-2D008-2C_-3Aon_920627-2Creactor_Tripped.Caused_by_Varying_Resistance_Readings_Substandard_Workmanship.Plant_Instruction_Written_to_Provide_Guidance
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000328/LER-1992-008, :on 920627,reactor Tripped.Caused by Varying Resistance Readings Substandard Workmanship.Plant Instruction Written to Provide Guidance

05000327/LER-1995-019, :on 951225,manual Reactor Trip Occurred as Result of Main Generator Exciter Problems.Caused by Field Pole Failure in Main Generator.Replaced Exciter
type: Subject
page: https://kanterella.com/05000327/LER-2D1995-2D019-2C_-3Aon_951225-2Cmanual_Reactor_Trip_Occurred_as_Result_of_Main_Generator_Exciter_Problems.Caused_by_Field_Pole_Failure_in_Main_Generator.Replaced_Exc…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1995-019, :on 951225,manual Reactor Trip Occurred as Result of Main Generator Exciter Problems.Caused by Field Pole Failure in Main Generator.Replaced Exciter

05000285/LER-1995-008, :on 951204,inadequate Trisodium Phosphate Was in Containment Due to Calculation Error.Revised Appropriate Calculations for Future Operating Cycles
type: Subject
page: https://kanterella.com/05000285/LER-2D1995-2D008-2C_-3Aon_951204-2Cinadequate_Trisodium_Phosphate_Was_in_Containment_Due_to_Calculation_Error.Revised_Appropriate_Calculations_for_Future_Operating_Cycl…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000285/LER-1995-008, :on 951204,inadequate Trisodium Phosphate Was in Containment Due to Calculation Error.Revised Appropriate Calculations for Future Operating Cycles

LER-1992-005, :on 920325,RCIC Sys Declared Inoperable Due to Evidence of Water in Turbine Casing.Caused by Malfunctioning Turbine Exhaust Line Steam Trap.Steam Trap Removed & Cleaned & Internals Installed
type: Subject
label: 05000298/LER-1992-005, :on 920325,RCIC Sys Declared Inoperable Due to Evidence of Water in Turbine Casing.Caused by Malfunctioning Turbine Exhaust Line Steam Trap.Steam Trap Removed & Cleaned & Internals Installed
page: https://kanterella.com/05000298/LER-2D1992-2D005-2C_-3Aon_920325-2CRCIC_Sys_Declared_Inoperable_Due_to_Evidence_of_Water_in_Turbine_Casing.Caused_by_Malfunctioning_Turbine_Exhaust_Line_Steam_Trap.Stea…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000298/LER-1992-005, :on 920325,RCIC Sys Declared Inoperable Due to Evidence of Water in Turbine Casing.Caused by Malfunctioning Turbine Exhaust Line Steam Trap.Steam Trap Removed & Cleaned & Internals Installed

LER-1995-005-04, :on 951102,calibr Input Data for Rosemount Instrument Transmitters Was in Error.Caused by Ineffective Review Process for Instrument Calculations.Established Administrative Control for SIT Level Control
type: Subject
label: 05000382/LER-1995-005-04, :on 951102,calibr Input Data for Rosemount Instrument Transmitters Was in Error.Caused by Ineffective Review Process for Instrument Calculations.Established Administrative Control for SIT Level Control
page: https://kanterella.com/05000382/LER-2D1995-2D005-2D04-2C_-3Aon_951102-2Ccalibr_Input_Data_for_Rosemount_Instrument_Transmitters_Was_in_Error.Caused_by_Ineffective_Review_Process_for_Instrument_Calcula…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1995-005-04, :on 951102,calibr Input Data for Rosemount Instrument Transmitters Was in Error.Caused by Ineffective Review Process for Instrument Calculations.Established Administrative Control for SIT Level Control

LER-1995-015, :on 951101,ESF Actuation Occurred Due to Misinterpretation of Procedural Note of Determining Differential Proessure Across MSIV Prior to Opening Valve. Counseled Involved Personnel
type: Subject
label: 05000327/LER-1995-015, :on 951101,ESF Actuation Occurred Due to Misinterpretation of Procedural Note of Determining Differential Proessure Across MSIV Prior to Opening Valve. Counseled Involved Personnel
page: https://kanterella.com/05000327/LER-2D1995-2D015-2C_-3Aon_951101-2CESF_Actuation_Occurred_Due_to_Misinterpretation_of_Procedural_Note_of_Determining_Differential_Proessure_Across_MSIV_Prior_to_Opening…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1995-015, :on 951101,ESF Actuation Occurred Due to Misinterpretation of Procedural Note of Determining Differential Proessure Across MSIV Prior to Opening Valve. Counseled Involved Personnel

LER-1995-013, :on 951010,surveillance Was Missed During Mode 6.Caused by Inadequate Training of Licensed Operators in Use of 12-wk Schedule.Revised Procedures to Include Comprehensive List of Routine SIs
type: Subject
label: 05000327/LER-1995-013, :on 951010,surveillance Was Missed During Mode 6.Caused by Inadequate Training of Licensed Operators in Use of 12-wk Schedule.Revised Procedures to Include Comprehensive List of Routine SIs
page: https://kanterella.com/05000327/LER-2D1995-2D013-2C_-3Aon_951010-2Csurveillance_Was_Missed_During_Mode_6.Caused_by_Inadequate_Training_of_Licensed_Operators_in_Use_of_12-2Dwk_Schedule.Revised_Procedur…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1995-013, :on 951010,surveillance Was Missed During Mode 6.Caused by Inadequate Training of Licensed Operators in Use of 12-wk Schedule.Revised Procedures to Include Comprehensive List of Routine SIs

05000219/LER-1995-007, :on 951010,TS Required Surveillance Was Missed Due to Administrative Error.Nuclear Safety Assessment Group Performed Audit of Past Surveillance Activities
type: Subject
page: https://kanterella.com/05000219/LER-2D1995-2D007-2C_-3Aon_951010-2CTS_Required_Surveillance_Was_Missed_Due_to_Administrative_Error.Nuclear_Safety_Assessment_Group_Performed_Audit_of_Past_Surveillance_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000219/LER-1995-007, :on 951010,TS Required Surveillance Was Missed Due to Administrative Error.Nuclear Safety Assessment Group Performed Audit of Past Surveillance Activities

LER-1995-009, :on 951008,classified Results of SG Tube Insps Performed During Unit 1 Thirteenth Refueling Outage of 328 Tubes as Category C-8 Due to 3.34- of Tubes Inspected Being Defective.Required Tubes Plugged or Repaired
type: Subject
label: 05000348/LER-1995-009, :on 951008,classified Results of SG Tube Insps Performed During Unit 1 Thirteenth Refueling Outage of 328 Tubes as Category C-8 Due to 3.34% of Tubes Inspected Being Defective.Required Tubes Plugged or Repaired
page: https://kanterella.com/05000348/LER-2D1995-2D009-2C_-3Aon_951008-2Cclassified_Results_of_SG_Tube_Insps_Performed_During_Unit_1_Thirteenth_Refueling_Outage_of_328_Tubes_as_Category_C-2D8_Due_to_3.34-_o…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000348/LER-1995-009, :on 951008,classified Results of SG Tube Insps Performed During Unit 1 Thirteenth Refueling Outage of 328 Tubes as Category C-8 Due to 3.34% of Tubes Inspected Being Defective.Required Tubes Plugged or Repaired

LER-1984-064, :on 840925,inadvertent Trip Occurred on lo-lo Steam Generator Level in Loop 1.Caused by Pressure Decrease Due to Opening MSIV FCV-1-4 for Loop 1.Precautionary Note Added to GOI-1
type: Subject
label: 05000327/LER-1984-064, :on 840925,inadvertent Trip Occurred on lo-lo Steam Generator Level in Loop 1.Caused by Pressure Decrease Due to Opening MSIV FCV-1-4 for Loop 1.Precautionary Note Added to GOI-1
page: https://kanterella.com/05000327/LER-2D1984-2D064-2C_-3Aon_840925-2Cinadvertent_Trip_Occurred_on_lo-2Dlo_Steam_Generator_Level_in_Loop_1.Caused_by_Pressure_Decrease_Due_to_Opening_MSIV_FCV-2D1-2D4_for_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1984-064, :on 840925,inadvertent Trip Occurred on lo-lo Steam Generator Level in Loop 1.Caused by Pressure Decrease Due to Opening MSIV FCV-1-4 for Loop 1.Precautionary Note Added to GOI-1

LER-1984-021, :on 840617,during Surveillance Test for Standby Diesel Generator B Operability,Diesel Tripped on High Crankcase Pressure While Loaded to Approx 2,400 Kw.Caused by Scavenging Air Blower Failure.Blower Repaired
type: Subject
label: 05000331/LER-1984-021, :on 840617,during Surveillance Test for Standby Diesel Generator B Operability,Diesel Tripped on High Crankcase Pressure While Loaded to Approx 2,400 Kw.Caused by Scavenging Air Blower Failure.Blower Repaired
page: https://kanterella.com/05000331/LER-2D1984-2D021-2C_-3Aon_840617-2Cduring_Surveillance_Test_for_Standby_Diesel_Generator_B_Operability-2CDiesel_Tripped_on_High_Crankcase_Pressure_While_Loaded_to_Appro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000331/LER-1984-021, :on 840617,during Surveillance Test for Standby Diesel Generator B Operability,Diesel Tripped on High Crankcase Pressure While Loaded to Approx 2,400 Kw.Caused by Scavenging Air Blower Failure.Blower Repaired

LER-1995-003-03, :on 950727,failed to Perform TS Surveillance Due to Unanticipated Interaction of Sys.Reviewed All Penetrations to Determine Whether Similar Situations Exist in Valves Omitted from Containment Integrity Boundary
type: Subject
label: 05000413/LER-1995-003-03, :on 950727,failed to Perform TS Surveillance Due to Unanticipated Interaction of Sys.Reviewed All Penetrations to Determine Whether Similar Situations Exist in Valves Omitted from Containment Integrity Boundary
page: https://kanterella.com/05000413/LER-2D1995-2D003-2D03-2C_-3Aon_950727-2Cfailed_to_Perform_TS_Surveillance_Due_to_Unanticipated_Interaction_of_Sys.Reviewed_All_Penetrations_to_Determine_Whether_Similar…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000413/LER-1995-003-03, :on 950727,failed to Perform TS Surveillance Due to Unanticipated Interaction of Sys.Reviewed All Penetrations to Determine Whether Similar Situations Exist in Valves Omitted from Containment Integrity Boundary

05000339/LER-1984-003-03, :on 840505,facility Taken off-line to Perform Preventative Maint & Testing on Reactor Trip Breakers.Minor Problems Discovered.Facility Placed Back on-line on 840508
type: Subject
page: https://kanterella.com/05000339/LER-2D1984-2D003-2D03-2C_-3Aon_840505-2Cfacility_Taken_off-2Dline_to_Perform_Preventative_Maint_-26_Testing_on_Reactor_Trip_Breakers.Minor_Problems_Discovered.Facility_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000339/LER-1984-003-03, :on 840505,facility Taken off-line to Perform Preventative Maint & Testing on Reactor Trip Breakers.Minor Problems Discovered.Facility Placed Back on-line on 840508

05000339/LER-1995-002-03, :on 950709,missed Surveillance on Individual Rod Position Indication Due to Personnel Error.Returned Both Computer Points D-H2 & D-H8 from Calibr Mode
type: Subject
page: https://kanterella.com/05000339/LER-2D1995-2D002-2D03-2C_-3Aon_950709-2Cmissed_Surveillance_on_Individual_Rod_Position_Indication_Due_to_Personnel_Error.Returned_Both_Computer_Points_D-2DH2_-26_D-2DH8…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000339/LER-1995-002-03, :on 950709,missed Surveillance on Individual Rod Position Indication Due to Personnel Error.Returned Both Computer Points D-H2 & D-H8 from Calibr Mode

LER-1995-001, :on 950126,determined That LOCA Analysis Results for 2 Ft Core Elevation Potentially non-conservative Due to Modeling Errors.Vendor Evaluated Current Fuel Cycle to Determine If Operating Limits Valid
type: Subject
label: 05000346/LER-1995-001, :on 950126,determined That LOCA Analysis Results for 2 Ft Core Elevation Potentially non-conservative Due to Modeling Errors.Vendor Evaluated Current Fuel Cycle to Determine If Operating Limits Valid
page: https://kanterella.com/05000346/LER-2D1995-2D001-2C_-3Aon_950126-2Cdetermined_That_LOCA_Analysis_Results_for_2_Ft_Core_Elevation_Potentially_non-2Dconservative_Due_to_Modeling_Errors.Vendor_Evaluated_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000346/LER-1995-001, :on 950126,determined That LOCA Analysis Results for 2 Ft Core Elevation Potentially non-conservative Due to Modeling Errors.Vendor Evaluated Current Fuel Cycle to Determine If Operating Limits Valid

LER-1984-002-05, :on 840103,setpoint Value of Pressure Switches PS-64-57A-D Found Above Tech Spec 3.2.B. Limits.Caused by Static O-ring Model 12N-AA4 Setpoint Drift.Switches Recalibr.Surveillance Test Revised
type: Subject
label: 05000259/LER-1984-002-05, :on 840103,setpoint Value of Pressure Switches PS-64-57A-D Found Above Tech Spec 3.2.B. Limits.Caused by Static O-ring Model 12N-AA4 Setpoint Drift.Switches Recalibr.Surveillance Test Revised
page: https://kanterella.com/05000259/LER-2D1984-2D002-2D05-2C_-3Aon_840103-2Csetpoint_Value_of_Pressure_Switches_PS-2D64-2D57A-2DD_Found_Above_Tech_Spec_3.2.B._Limits.Caused_by_Static_O-2Dring_Model_12N-2D…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000259/LER-1984-002-05, :on 840103,setpoint Value of Pressure Switches PS-64-57A-D Found Above Tech Spec 3.2.B. Limits.Caused by Static O-ring Model 12N-AA4 Setpoint Drift.Switches Recalibr.Surveillance Test Revised

LER-1994-005-02, :on 940909,ESF Actuation Occurred When Main Feedwater Pumps Tripped Due to SG High High Level.Reheat Pressure Transmitter Repaired & Calibrated Satisfactorily & Returned to Svc
type: Subject
label: 05000338/LER-1994-005-02, :on 940909,ESF Actuation Occurred When Main Feedwater Pumps Tripped Due to SG High High Level.Reheat Pressure Transmitter Repaired & Calibrated Satisfactorily & Returned to Svc
page: https://kanterella.com/05000338/LER-2D1994-2D005-2D02-2C_-3Aon_940909-2CESF_Actuation_Occurred_When_Main_Feedwater_Pumps_Tripped_Due_to_SG_High_High_Level.Reheat_Pressure_Transmitter_Repaired_-26_Cali…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000338/LER-1994-005-02, :on 940909,ESF Actuation Occurred When Main Feedwater Pumps Tripped Due to SG High High Level.Reheat Pressure Transmitter Repaired & Calibrated Satisfactorily & Returned to Svc

LER-1994-023, :on 940908,reactor Scrammed Due to Spurious Signals from Undamped Rosemount Model 1153 Transmitters. Conditions Leading to Failure Determinded to Be Reportable Per 10CFR21.Model 1153 Transmitters Replaced
type: Subject
label: 05000458/LER-1994-023, :on 940908,reactor Scrammed Due to Spurious Signals from Undamped Rosemount Model 1153 Transmitters. Conditions Leading to Failure Determinded to Be Reportable Per 10CFR21.Model 1153 Transmitters Replaced
page: https://kanterella.com/05000458/LER-2D1994-2D023-2C_-3Aon_940908-2Creactor_Scrammed_Due_to_Spurious_Signals_from_Undamped_Rosemount_Model_1153_Transmitters._Conditions_Leading_to_Failure_Determinded_t…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000458/LER-1994-023, :on 940908,reactor Scrammed Due to Spurious Signals from Undamped Rosemount Model 1153 Transmitters. Conditions Leading to Failure Determinded to Be Reportable Per 10CFR21.Model 1153 Transmitters Replaced

Spare
type: Subject
label: 05000278/LER-1994-002-01, :on 940203,discovered Main Generator Ground Relay Status Light Out.Caused by Internal Rack Out Tab Not Installed on Alterex Field Breaker.Damaged Component Repaired & Breaker Replaced W/Spare
page: https://kanterella.com/05000278/LER-2D1994-2D002-2D01-2C_-3Aon_940203-2Cdiscovered_Main_Generator_Ground_Relay_Status_Light_Out.Caused_by_Internal_Rack_Out_Tab_Not_Installed_on_Alterex_Field_Breaker.D…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000278/LER-1994-002-01, :on 940203,discovered Main Generator Ground Relay Status Light Out.Caused by Internal Rack Out Tab Not Installed on Alterex Field Breaker.Damaged Component Repaired & Breaker Replaced W/Spare

05000317/LER-1994-003, :on 940321,noticed Leakage from Rcs.Caused by Pwscc.Corrective Action:Sleeve Location B-3 & FF-1 Have Been Plugged W/Alloy 690 Plug Welded to Outer Diameter of Pzr Lower Head
type: Subject
page: https://kanterella.com/05000317/LER-2D1994-2D003-2C_-3Aon_940321-2Cnoticed_Leakage_from_Rcs.Caused_by_Pwscc.Corrective_Action-3ASleeve_Location_B-2D3_-26_FF-2D1_Have_Been_Plugged_W/Alloy_690_Plug_Weld…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000317/LER-1994-003, :on 940321,noticed Leakage from Rcs.Caused by Pwscc.Corrective Action:Sleeve Location B-3 & FF-1 Have Been Plugged W/Alloy 690 Plug Welded to Outer Diameter of Pzr Lower Head

LER-1990-039, :on 901211,discovered That Both Loops of Containment Spray Mode of RHR Sys Inoperable.Caused by Inadequate Instructions.Instructions Revised to Include Isolation Valve for Position Verification
type: Subject
label: 05000440/LER-1990-039, :on 901211,discovered That Both Loops of Containment Spray Mode of RHR Sys Inoperable.Caused by Inadequate Instructions.Instructions Revised to Include Isolation Valve for Position Verification
page: https://kanterella.com/05000440/LER-2D1990-2D039-2C_-3Aon_901211-2Cdiscovered_That_Both_Loops_of_Containment_Spray_Mode_of_RHR_Sys_Inoperable.Caused_by_Inadequate_Instructions.Instructions_Revised_to_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000440/LER-1990-039, :on 901211,discovered That Both Loops of Containment Spray Mode of RHR Sys Inoperable.Caused by Inadequate Instructions.Instructions Revised to Include Isolation Valve for Position Verification

LER-1994-004, :on 940113,nonconservative Alarm Setpoint for Liquid Radwaste Gross Activity Monitor 1RMS-RE107.Caused by Personnel Error.Alarm Setpoint for Monitor 1RMS-RE107 Revised to Assure Setpoint Properly Set
type: Subject
label: 05000458/LER-1994-004, :on 940113,nonconservative Alarm Setpoint for Liquid Radwaste Gross Activity Monitor 1RMS-RE107.Caused by Personnel Error.Alarm Setpoint for Monitor 1RMS-RE107 Revised to Assure Setpoint Properly Set
page: https://kanterella.com/05000458/LER-2D1994-2D004-2C_-3Aon_940113-2Cnonconservative_Alarm_Setpoint_for_Liquid_Radwaste_Gross_Activity_Monitor_1RMS-2DRE107.Caused_by_Personnel_Error.Alarm_Setpoint_for_M…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000458/LER-1994-004, :on 940113,nonconservative Alarm Setpoint for Liquid Radwaste Gross Activity Monitor 1RMS-RE107.Caused by Personnel Error.Alarm Setpoint for Monitor 1RMS-RE107 Revised to Assure Setpoint Properly Set

Appropriate Precautions
type: Subject
label: 05000317/LER-1993-008, :on 931203,determined Removal of EDG Room Shield Door Could Render Other EDGs Inoperable.Caused by Lack of Procedural Controls.Maint Procedure Will Be Generated W/Appropriate Precautions
page: https://kanterella.com/05000317/LER-2D1993-2D008-2C_-3Aon_931203-2Cdetermined_Removal_of_EDG_Room_Shield_Door_Could_Render_Other_EDGs_Inoperable.Caused_by_Lack_of_Procedural_Controls.Maint_Procedure_W…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000317/LER-1993-008, :on 931203,determined Removal of EDG Room Shield Door Could Render Other EDGs Inoperable.Caused by Lack of Procedural Controls.Maint Procedure Will Be Generated W/Appropriate Precautions

LER-1990-010-03, :on 900619,control Room Received Loss of Containment Sample Flow Alarm from Radiation Monitors.Caused by Personnel Error & Lack of Clear Procedure Guidance. Personnel Counseled
type: Subject
label: 05000414/LER-1990-010-03, :on 900619,control Room Received Loss of Containment Sample Flow Alarm from Radiation Monitors.Caused by Personnel Error & Lack of Clear Procedure Guidance. Personnel Counseled
page: https://kanterella.com/05000414/LER-2D1990-2D010-2D03-2C_-3Aon_900619-2Ccontrol_Room_Received_Loss_of_Containment_Sample_Flow_Alarm_from_Radiation_Monitors.Caused_by_Personnel_Error_-26_Lack_of_Clear_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000414/LER-1990-010-03, :on 900619,control Room Received Loss of Containment Sample Flow Alarm from Radiation Monitors.Caused by Personnel Error & Lack of Clear Procedure Guidance. Personnel Counseled

LER-1994-004, :on 940416,discovered That Surveillance Frequency for Sp 34SV-SUV-008-1S Not Correct for Seven Primary Containment Vent & Purge Valves Due to Personnel Error.Surveillance Brought Up to Date
type: Subject
label: 05000321/LER-1994-004, :on 940416,discovered That Surveillance Frequency for Sp 34SV-SUV-008-1S Not Correct for Seven Primary Containment Vent & Purge Valves Due to Personnel Error.Surveillance Brought Up to Date
page: https://kanterella.com/05000321/LER-2D1994-2D004-2C_-3Aon_940416-2Cdiscovered_That_Surveillance_Frequency_for_Sp_34SV-2DSUV-2D008-2D1S_Not_Correct_for_Seven_Primary_Containment_Vent_-26_Purge_Valves_D…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000321/LER-1994-004, :on 940416,discovered That Surveillance Frequency for Sp 34SV-SUV-008-1S Not Correct for Seven Primary Containment Vent & Purge Valves Due to Personnel Error.Surveillance Brought Up to Date

LER-1991-002, :on 910128,essential Svc Water Flow to Containment Cooling Units Below TS 4.6.2.3 Requirements of 4,000 Gpm.Caused by Inaccurate Flow Readings Provided by Local Annubars.Surveillance Procedure Revised
type: Subject
label: 05000482/LER-1991-002, :on 910128,essential Svc Water Flow to Containment Cooling Units Below TS 4.6.2.3 Requirements of 4,000 Gpm.Caused by Inaccurate Flow Readings Provided by Local Annubars.Surveillance Procedure Revised
page: https://kanterella.com/05000482/LER-2D1991-2D002-2C_-3Aon_910128-2Cessential_Svc_Water_Flow_to_Containment_Cooling_Units_Below_TS_4.6.2.3_Requirements_of_4-2C000_Gpm.Caused_by_Inaccurate_Flow_Readings…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000482/LER-1991-002, :on 910128,essential Svc Water Flow to Containment Cooling Units Below TS 4.6.2.3 Requirements of 4,000 Gpm.Caused by Inaccurate Flow Readings Provided by Local Annubars.Surveillance Procedure Revised

LER-1990-003-01, :on 900223,discovered 16 Transformer Core Clamp Bolts Missing on Seismically Qualified Switchgear. Caused by Installation Error During Const Phase of Plant. Missing Clamps Replaced
type: Subject
label: 05000424/LER-1990-003-01, :on 900223,discovered 16 Transformer Core Clamp Bolts Missing on Seismically Qualified Switchgear. Caused by Installation Error During Const Phase of Plant. Missing Clamps Replaced
page: https://kanterella.com/05000424/LER-2D1990-2D003-2D01-2C_-3Aon_900223-2Cdiscovered_16_Transformer_Core_Clamp_Bolts_Missing_on_Seismically_Qualified_Switchgear._Caused_by_Installation_Error_During_Cons…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000424/LER-1990-003-01, :on 900223,discovered 16 Transformer Core Clamp Bolts Missing on Seismically Qualified Switchgear. Caused by Installation Error During Const Phase of Plant. Missing Clamps Replaced

05000296/LER-1988-006-04, :on 881116,compensatory Sampling Required by Tech Specs Erroneously Discontinued.Caused by Procedural Deficiency.Procedures Revised
type: Subject
page: https://kanterella.com/05000296/LER-2D1988-2D006-2D04-2C_-3Aon_881116-2Ccompensatory_Sampling_Required_by_Tech_Specs_Erroneously_Discontinued.Caused_by_Procedural_Deficiency.Procedures_Revised
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000296/LER-1988-006-04, :on 881116,compensatory Sampling Required by Tech Specs Erroneously Discontinued.Caused by Procedural Deficiency.Procedures Revised

LER-1989-002, :on 890117,water Inadvertently Drained from Spent Fuel Pool to New Fuel Pool.Caused by Incorrect Determination of Valves Position During Process of Removing Clearance.Spent Fuel Pool Level Restored
type: Subject
label: 05000400/LER-1989-002, :on 890117,water Inadvertently Drained from Spent Fuel Pool to New Fuel Pool.Caused by Incorrect Determination of Valves Position During Process of Removing Clearance.Spent Fuel Pool Level Restored
page: https://kanterella.com/05000400/LER-2D1989-2D002-2C_-3Aon_890117-2Cwater_Inadvertently_Drained_from_Spent_Fuel_Pool_to_New_Fuel_Pool.Caused_by_Incorrect_Determination_of_Valves_Position_During_Process…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000400/LER-1989-002, :on 890117,water Inadvertently Drained from Spent Fuel Pool to New Fuel Pool.Caused by Incorrect Determination of Valves Position During Process of Removing Clearance.Spent Fuel Pool Level Restored

LER-1990-002, :on 900108,two MSIVs Exhibited Closing Time in Excess of Tech Spec 3.7.1.5 Limit of 5 S.On 900109 & 10, Confirmed That Excessive Condensation Collected on Vent Side.Caused by Inadequate Insulation
type: Subject
label: 05000316/LER-1990-002, :on 900108,two MSIVs Exhibited Closing Time in Excess of Tech Spec 3.7.1.5 Limit of 5 S.On 900109 & 10, Confirmed That Excessive Condensation Collected on Vent Side.Caused by Inadequate Insulation
page: https://kanterella.com/05000316/LER-2D1990-2D002-2C_-3Aon_900108-2Ctwo_MSIVs_Exhibited_Closing_Time_in_Excess_of_Tech_Spec_3.7.1.5_Limit_of_5_S.On_900109_-26_10-2C_Confirmed_That_Excessive_Condensatio…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000316/LER-1990-002, :on 900108,two MSIVs Exhibited Closing Time in Excess of Tech Spec 3.7.1.5 Limit of 5 S.On 900109 & 10, Confirmed That Excessive Condensation Collected on Vent Side.Caused by Inadequate Insulation

ML16223A653
type: Subject
page: https://kanterella.com/ML16223A653
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: ML16223A653

05000529/LER-2007-001, Re Completion of a Shutdown Required by Technical Specification 3.5.3, Condition C
type: Subject
page: https://kanterella.com/05000529/LER-2D2007-2D001-2C_Re_Completion_of_a_Shutdown_Required_by_Technical_Specification_3.5.3-2C_Condition_C
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000529/LER-2007-001, Re Completion of a Shutdown Required by Technical Specification 3.5.3, Condition C

05000425/LER-2003-001, Regarding Technical Specification Required Shutdown Not Performed Following Issuance of Notice of Enforcement Discretion
type: Subject
page: https://kanterella.com/05000425/LER-2D2003-2D001-2C_Regarding_Technical_Specification_Required_Shutdown_Not_Performed_Following_Issuance_of_Notice_of_Enforcement_Discretion
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000425/LER-2003-001, Regarding Technical Specification Required Shutdown Not Performed Following Issuance of Notice of Enforcement Discretion

LER-1998-003-01, :on 980507,relays out-of-calibration Were Noted Due to Bumped Dial & Actions Not Taken.Caused by Improperly Installed Cover.Technicians Will Be Trained on Event & Protective Covers Will Be Clearly Marked
type: Subject
label: 05000318/LER-1998-003-01, :on 980507,relays out-of-calibration Were Noted Due to Bumped Dial & Actions Not Taken.Caused by Improperly Installed Cover.Technicians Will Be Trained on Event & Protective Covers Will Be Clearly Marked
page: https://kanterella.com/05000318/LER-2D1998-2D003-2D01-2C_-3Aon_980507-2Crelays_out-2Dof-2Dcalibration_Were_Noted_Due_to_Bumped_Dial_-26_Actions_Not_Taken.Caused_by_Improperly_Installed_Cover.Technicia…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000318/LER-1998-003-01, :on 980507,relays out-of-calibration Were Noted Due to Bumped Dial & Actions Not Taken.Caused by Improperly Installed Cover.Technicians Will Be Trained on Event & Protective Covers Will Be Clearly Marked

LER-1987-017, :on 870601,diesel Fuel Oil Analysis Results Not Received within Required Time.Caused by Personnel Transfer at Contract Lab.Individual Responsible for Analysis Not Aware of 7-day Reporting Requirement
type: Subject
label: 05000382/LER-1987-017, :on 870601,diesel Fuel Oil Analysis Results Not Received within Required Time.Caused by Personnel Transfer at Contract Lab.Individual Responsible for Analysis Not Aware of 7-day Reporting Requirement
page: https://kanterella.com/05000382/LER-2D1987-2D017-2C_-3Aon_870601-2Cdiesel_Fuel_Oil_Analysis_Results_Not_Received_within_Required_Time.Caused_by_Personnel_Transfer_at_Contract_Lab.Individual_Responsibl…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1987-017, :on 870601,diesel Fuel Oil Analysis Results Not Received within Required Time.Caused by Personnel Transfer at Contract Lab.Individual Responsible for Analysis Not Aware of 7-day Reporting Requirement

LER-1998-001-04, :on 980308,personnel Noticed Discrepancies Between Demand Position Step Counters & Digital Rod Position Indicators.Caused by Rod Control Firing Card Operating Abnormally.Firing Card Replaced
type: Subject
label: 05000425/LER-1998-001-04, :on 980308,personnel Noticed Discrepancies Between Demand Position Step Counters & Digital Rod Position Indicators.Caused by Rod Control Firing Card Operating Abnormally.Firing Card Replaced
page: https://kanterella.com/05000425/LER-2D1998-2D001-2D04-2C_-3Aon_980308-2Cpersonnel_Noticed_Discrepancies_Between_Demand_Position_Step_Counters_-26_Digital_Rod_Position_Indicators.Caused_by_Rod_Control_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000425/LER-1998-001-04, :on 980308,personnel Noticed Discrepancies Between Demand Position Step Counters & Digital Rod Position Indicators.Caused by Rod Control Firing Card Operating Abnormally.Firing Card Replaced

Qa Deficiency.Procedures Program Revised
type: Subject
label: 05000269/LER-1986-013-04, :on 861023,personnel Determined Procedures Used for Operation & Maint of Hydrostation Not Reviewed &/Or Approved Properly.Caused by Mgt/Qa Deficiency.Procedures Program Revised
page: https://kanterella.com/05000269/LER-2D1986-2D013-2D04-2C_-3Aon_861023-2Cpersonnel_Determined_Procedures_Used_for_Operation_-26_Maint_of_Hydrostation_Not_Reviewed_-26/Or_Approved_Properly.Caused_by_Mgt…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000269/LER-1986-013-04, :on 861023,personnel Determined Procedures Used for Operation & Maint of Hydrostation Not Reviewed &/Or Approved Properly.Caused by Mgt/Qa Deficiency.Procedures Program Revised

05000369/LER-1986-007-01, :on 860325,reactor Tripped on Steam Generator Lb lo-lo Level Signal.Caused by Failure of Bussman Fuses. Indicating Fuses Will Be Replaced W/Nonindicating Fuses
type: Subject
page: https://kanterella.com/05000369/LER-2D1986-2D007-2D01-2C_-3Aon_860325-2Creactor_Tripped_on_Steam_Generator_Lb_lo-2Dlo_Level_Signal.Caused_by_Failure_of_Bussman_Fuses._Indicating_Fuses_Will_Be_Replaced…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000369/LER-1986-007-01, :on 860325,reactor Tripped on Steam Generator Lb lo-lo Level Signal.Caused by Failure of Bussman Fuses. Indicating Fuses Will Be Replaced W/Nonindicating Fuses

LER-1986-006, :on 860402,turbine Generator Trip Caused Reactor Trip.Caused by Loss of Excitation to Main Generator Due to Worn Brushes on Outboard Collector Ring.Brushes Replaced & Slip Ring Buffed
type: Subject
label: 05000395/LER-1986-006, :on 860402,turbine Generator Trip Caused Reactor Trip.Caused by Loss of Excitation to Main Generator Due to Worn Brushes on Outboard Collector Ring.Brushes Replaced & Slip Ring Buffed
page: https://kanterella.com/05000395/LER-2D1986-2D006-2C_-3Aon_860402-2Cturbine_Generator_Trip_Caused_Reactor_Trip.Caused_by_Loss_of_Excitation_to_Main_Generator_Due_to_Worn_Brushes_on_Outboard_Collector_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000395/LER-1986-006, :on 860402,turbine Generator Trip Caused Reactor Trip.Caused by Loss of Excitation to Main Generator Due to Worn Brushes on Outboard Collector Ring.Brushes Replaced & Slip Ring Buffed

IR 05000382/1999008
type: Subject
page: https://kanterella.com/IR_05000382/1999008
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: IR 05000382/1999008

LER-1986-022, :on 860621,reactor Trip Occurred as Result of Water Level in Steam Generator D Reaching lo-lo Level Trip Setpoint.Caused by Spurious slow-close Signal Generated by Valve Control Module.Faulty Module Replaced
type: Subject
label: 05000483/LER-1986-022, :on 860621,reactor Trip Occurred as Result of Water Level in Steam Generator D Reaching lo-lo Level Trip Setpoint.Caused by Spurious slow-close Signal Generated by Valve Control Module.Faulty Module Replaced
page: https://kanterella.com/05000483/LER-2D1986-2D022-2C_-3Aon_860621-2Creactor_Trip_Occurred_as_Result_of_Water_Level_in_Steam_Generator_D_Reaching_lo-2Dlo_Level_Trip_Setpoint.Caused_by_Spurious_slow-2Dcl…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000483/LER-1986-022, :on 860621,reactor Trip Occurred as Result of Water Level in Steam Generator D Reaching lo-lo Level Trip Setpoint.Caused by Spurious slow-close Signal Generated by Valve Control Module.Faulty Module Replaced

Lag Circuit. Cause Under Investigation.Unit Replaced
type: Subject
label: 05000318/LER-1987-002-01, :on 870228,low Steam Generator Water Level Reactor Trip Occurred Due to Failed Rochester Instrument Sys,Inc Adjustable Overshoot Transmitter Lead/Lag Circuit. Cause Under Investigation.Unit Replaced
page: https://kanterella.com/05000318/LER-2D1987-2D002-2D01-2C_-3Aon_870228-2Clow_Steam_Generator_Water_Level_Reactor_Trip_Occurred_Due_to_Failed_Rochester_Instrument_Sys-2CInc_Adjustable_Overshoot_Transmit…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000318/LER-1987-002-01, :on 870228,low Steam Generator Water Level Reactor Trip Occurred Due to Failed Rochester Instrument Sys,Inc Adjustable Overshoot Transmitter Lead/Lag Circuit. Cause Under Investigation.Unit Replaced

LER-1998-002-01, :on 980708,excessive FW Temp Reduction Was Noted as Result of Loss of Stator CW with Main Turbine. Caused by Failure to Analyze Worst Case Lfwh Transient. Process Computer Databank Was Updated.With
type: Subject
label: 05000324/LER-1998-002-01, :on 980708,excessive FW Temp Reduction Was Noted as Result of Loss of Stator CW with Main Turbine. Caused by Failure to Analyze Worst Case Lfwh Transient. Process Computer Databank Was Updated.With
page: https://kanterella.com/05000324/LER-2D1998-2D002-2D01-2C_-3Aon_980708-2Cexcessive_FW_Temp_Reduction_Was_Noted_as_Result_of_Loss_of_Stator_CW_with_Main_Turbine._Caused_by_Failure_to_Analyze_Worst_Case_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000324/LER-1998-002-01, :on 980708,excessive FW Temp Reduction Was Noted as Result of Loss of Stator CW with Main Turbine. Caused by Failure to Analyze Worst Case Lfwh Transient. Process Computer Databank Was Updated.With

05000339/LER-1986-007-01, :on 860416,trip Occurred During Throttle valve- Governor Valve Transfer.Caused by Turbine First Stage Pressure Spike.Investigation of Electro Hydraulic Control Sys Underway
type: Subject
page: https://kanterella.com/05000339/LER-2D1986-2D007-2D01-2C_-3Aon_860416-2Ctrip_Occurred_During_Throttle_valve-2D_Governor_Valve_Transfer.Caused_by_Turbine_First_Stage_Pressure_Spike.Investigation_of_Ele…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000339/LER-1986-007-01, :on 860416,trip Occurred During Throttle valve- Governor Valve Transfer.Caused by Turbine First Stage Pressure Spike.Investigation of Electro Hydraulic Control Sys Underway

LER-1985-035, :on 850714,reactor Trip Occurred Due to Electrical Fault in Digital electro-hydraulic Control Panel. Caused by Overheated Resistor on Solid State Circuit Board. Different Resistors Installed
type: Subject
label: 05000382/LER-1985-035, :on 850714,reactor Trip Occurred Due to Electrical Fault in Digital electro-hydraulic Control Panel. Caused by Overheated Resistor on Solid State Circuit Board. Different Resistors Installed
page: https://kanterella.com/05000382/LER-2D1985-2D035-2C_-3Aon_850714-2Creactor_Trip_Occurred_Due_to_Electrical_Fault_in_Digital_electro-2Dhydraulic_Control_Panel._Caused_by_Overheated_Resistor_on_Solid_St…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000382/LER-1985-035, :on 850714,reactor Trip Occurred Due to Electrical Fault in Digital electro-hydraulic Control Panel. Caused by Overheated Resistor on Solid State Circuit Board. Different Resistors Installed

LER-1995-005, :on 951109,manual Reactor Trip Occurred.Caused by Failure of Digital Feedwater Control Module FIC-1111. Reviewed Design Engineering Standards & Existing FP 2000 Digital Controllers Are Being Replaced
type: Subject
label: 05000317/LER-1995-005, :on 951109,manual Reactor Trip Occurred.Caused by Failure of Digital Feedwater Control Module FIC-1111. Reviewed Design Engineering Standards & Existing FP 2000 Digital Controllers Are Being Replaced
page: https://kanterella.com/05000317/LER-2D1995-2D005-2C_-3Aon_951109-2Cmanual_Reactor_Trip_Occurred.Caused_by_Failure_of_Digital_Feedwater_Control_Module_FIC-2D1111._Reviewed_Design_Engineering_Standards_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000317/LER-1995-005, :on 951109,manual Reactor Trip Occurred.Caused by Failure of Digital Feedwater Control Module FIC-1111. Reviewed Design Engineering Standards & Existing FP 2000 Digital Controllers Are Being Replaced

LER-1984-019-02, :on 841211,reactor Trip Occurred.Caused by Low Condenser Vacuum Due to Leak in Moisture Separator Reheater Crossunder Manway Gasket.Manway Temporarily Sealed,Gasket Replaced & Procedure Revised
type: Subject
label: 05000281/LER-1984-019-02, :on 841211,reactor Trip Occurred.Caused by Low Condenser Vacuum Due to Leak in Moisture Separator Reheater Crossunder Manway Gasket.Manway Temporarily Sealed,Gasket Replaced & Procedure Revised
page: https://kanterella.com/05000281/LER-2D1984-2D019-2D02-2C_-3Aon_841211-2Creactor_Trip_Occurred.Caused_by_Low_Condenser_Vacuum_Due_to_Leak_in_Moisture_Separator_Reheater_Crossunder_Manway_Gasket.Manway_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000281/LER-1984-019-02, :on 841211,reactor Trip Occurred.Caused by Low Condenser Vacuum Due to Leak in Moisture Separator Reheater Crossunder Manway Gasket.Manway Temporarily Sealed,Gasket Replaced & Procedure Revised

LER-1984-006, :on 840515,unidentified RCS Leakage in Excess of 1 Gpm.Caused by Failure to Perform Surveilance Test on Reactor Protection Sys Shutdown Bypass Channels.Line Permitted to Depressurize Prior to Maint
type: Subject
label: 05000346/LER-1984-006, :on 840515,unidentified RCS Leakage in Excess of 1 Gpm.Caused by Failure to Perform Surveilance Test on Reactor Protection Sys Shutdown Bypass Channels.Line Permitted to Depressurize Prior to Maint
page: https://kanterella.com/05000346/LER-2D1984-2D006-2C_-3Aon_840515-2Cunidentified_RCS_Leakage_in_Excess_of_1_Gpm.Caused_by_Failure_to_Perform_Surveilance_Test_on_Reactor_Protection_Sys_Shutdown_Bypass_C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000346/LER-1984-006, :on 840515,unidentified RCS Leakage in Excess of 1 Gpm.Caused by Failure to Perform Surveilance Test on Reactor Protection Sys Shutdown Bypass Channels.Line Permitted to Depressurize Prior to Maint

05000327/LER-1984-072, :on 841207,functional Discrepancy for post- Accident Radiation Monitors for Reactor Coolant Drain Tank Discharge Piping Identified.Caused by Incorrect Drawings. Monitors Revised
type: Subject
page: https://kanterella.com/05000327/LER-2D1984-2D072-2C_-3Aon_841207-2Cfunctional_Discrepancy_for_post-2D_Accident_Radiation_Monitors_for_Reactor_Coolant_Drain_Tank_Discharge_Piping_Identified.Caused_by_I…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000327/LER-1984-072, :on 841207,functional Discrepancy for post- Accident Radiation Monitors for Reactor Coolant Drain Tank Discharge Piping Identified.Caused by Incorrect Drawings. Monitors Revised

LER-1984-019-01, :on 840818,ability of Turbine Driven Auxiliary Feed Pumps to Meet Safety Function Questioned During NRC Audit.Caused by Governor Setting at 50-.Unit 1 Settings Changed to 85- & Unit 2 to 90-
type: Subject
label: 05000315/LER-1984-019-01, :on 840818,ability of Turbine Driven Auxiliary Feed Pumps to Meet Safety Function Questioned During NRC Audit.Caused by Governor Setting at 50%.Unit 1 Settings Changed to 85% & Unit 2 to 90%
page: https://kanterella.com/05000315/LER-2D1984-2D019-2D01-2C_-3Aon_840818-2Cability_of_Turbine_Driven_Auxiliary_Feed_Pumps_to_Meet_Safety_Function_Questioned_During_NRC_Audit.Caused_by_Governor_Setting_at…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000315/LER-1984-019-01, :on 840818,ability of Turbine Driven Auxiliary Feed Pumps to Meet Safety Function Questioned During NRC Audit.Caused by Governor Setting at 50%.Unit 1 Settings Changed to 85% & Unit 2 to 90%

05000458/LER-1995-007-02, :on 950905,fan Hub for HPCS Pump Room Unit Cooler Failed.Cause Presently Being Investigated.Unit Cooler Repaired & Restored to Operations
type: Subject
page: https://kanterella.com/05000458/LER-2D1995-2D007-2D02-2C_-3Aon_950905-2Cfan_Hub_for_HPCS_Pump_Room_Unit_Cooler_Failed.Cause_Presently_Being_Investigated.Unit_Cooler_Repaired_-26_Restored_to_Operations
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000458/LER-1995-007-02, :on 950905,fan Hub for HPCS Pump Room Unit Cooler Failed.Cause Presently Being Investigated.Unit Cooler Repaired & Restored to Operations

05000302/LER-1995-012, :on 950707,determined That CR-3 May Have Operated Outside Licensing Basis.Caused by Design Error.Mod Approval Record Initiated to Install Isolation Contacts in Control Circuits
type: Subject
page: https://kanterella.com/05000302/LER-2D1995-2D012-2C_-3Aon_950707-2Cdetermined_That_CR-2D3_May_Have_Operated_Outside_Licensing_Basis.Caused_by_Design_Error.Mod_Approval_Record_Initiated_to_Install_Isol…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000302/LER-1995-012, :on 950707,determined That CR-3 May Have Operated Outside Licensing Basis.Caused by Design Error.Mod Approval Record Initiated to Install Isolation Contacts in Control Circuits

LER-1994-012, :on 941025,partial Group 1 PCIS Trip Initiated Because Bias Spring Assembly Incorrectly Installed in Main Turbine EHC Sys.Bias Spring Installed Correctly & Contract Personnel Made Aware of Consequences of Event
type: Subject
label: 05000321/LER-1994-012, :on 941025,partial Group 1 PCIS Trip Initiated Because Bias Spring Assembly Incorrectly Installed in Main Turbine EHC Sys.Bias Spring Installed Correctly & Contract Personnel Made Aware of Consequences of Event
page: https://kanterella.com/05000321/LER-2D1994-2D012-2C_-3Aon_941025-2Cpartial_Group_1_PCIS_Trip_Initiated_Because_Bias_Spring_Assembly_Incorrectly_Installed_in_Main_Turbine_EHC_Sys.Bias_Spring_Installed_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000321/LER-1994-012, :on 941025,partial Group 1 PCIS Trip Initiated Because Bias Spring Assembly Incorrectly Installed in Main Turbine EHC Sys.Bias Spring Installed Correctly & Contract Personnel Made Aware of Consequences of Event

LER-1991-018, :on 911002,discovered Error in TS Amend 75, Resulting in Failure to Complete One of Two Weekly Channel Calibr Requirements for APRM Sys Channels.Caused by Use of Deficient Process.Calibr Performed
type: Subject
label: 05000341/LER-1991-018, :on 911002,discovered Error in TS Amend 75, Resulting in Failure to Complete One of Two Weekly Channel Calibr Requirements for APRM Sys Channels.Caused by Use of Deficient Process.Calibr Performed
page: https://kanterella.com/05000341/LER-2D1991-2D018-2C_-3Aon_911002-2Cdiscovered_Error_in_TS_Amend_75-2C_Resulting_in_Failure_to_Complete_One_of_Two_Weekly_Channel_Calibr_Requirements_for_APRM_Sys_Channe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000341/LER-1991-018, :on 911002,discovered Error in TS Amend 75, Resulting in Failure to Complete One of Two Weekly Channel Calibr Requirements for APRM Sys Channels.Caused by Use of Deficient Process.Calibr Performed

LER-1987-024-01, :on 870715,initiation of Standby Gas Treatment Sys Occurred.Caused by Personnel Error.Lprm Cutting Process Stopped & Detector Lowered Into Spent Fuel Pool.Personnel Counseled Re Lifting LPRM Correctly
type: Subject
label: 05000245/LER-1987-024-01, :on 870715,initiation of Standby Gas Treatment Sys Occurred.Caused by Personnel Error.Lprm Cutting Process Stopped & Detector Lowered Into Spent Fuel Pool.Personnel Counseled Re Lifting LPRM Correctly
page: https://kanterella.com/05000245/LER-2D1987-2D024-2D01-2C_-3Aon_870715-2Cinitiation_of_Standby_Gas_Treatment_Sys_Occurred.Caused_by_Personnel_Error.Lprm_Cutting_Process_Stopped_-26_Detector_Lowered_Int…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 364A
wiki page sort key: 05000245/LER-1987-024-01, :on 870715,initiation of Standby Gas Treatment Sys Occurred.Caused by Personnel Error.Lprm Cutting Process Stopped & Detector Lowered Into Spent Fuel Pool.Personnel Counseled Re Lifting LPRM Correctly

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