NRC Form 388A
type: Ontology
creation date: 2025-12-08T04:27:53-05:00
imports: http://semantic-mediawiki.org/swivt/1.0

NRC Form 388A
type: Subject
page: https://kanterella.com/NRC_Form_388A
wiki namespace: 0
wiki page content language: en
wiki page sort key: NRC Form 388A

05000445/LER-2001-001
type: Subject
page: https://kanterella.com/05000445/LER-2D2001-2D001
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000445/LER-2001-001

Upgraded Model & Temporary Mod Performed to Bypass Logic for Valves
type: Subject
label: 05000410/LER-1988-014, :on 880313,reactor Scram & ESF Actuations Occurred.Caused by Equipment Failure Due to Design Deficiency.Transmitter Replaced W/Upgraded Model & Temporary Mod Performed to Bypass Logic for Valves
page: https://kanterella.com/05000410/LER-2D1988-2D014-2C_-3Aon_880313-2Creactor_Scram_-26_ESF_Actuations_Occurred.Caused_by_Equipment_Failure_Due_to_Design_Deficiency.Transmitter_Replaced_W/Upgraded_Model_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000410/LER-1988-014, :on 880313,reactor Scram & ESF Actuations Occurred.Caused by Equipment Failure Due to Design Deficiency.Transmitter Replaced W/Upgraded Model & Temporary Mod Performed to Bypass Logic for Valves

LER-1987-006-01, :on 870302,discovered That Routine Flow Rate Surveillance on Control Room Emergency Ventilation Train B Performed Incorrectly on 870301.Caused by Personnel Error. Correct Zeroing Procedure Clarified
type: Subject
label: 05000259/LER-1987-006-01, :on 870302,discovered That Routine Flow Rate Surveillance on Control Room Emergency Ventilation Train B Performed Incorrectly on 870301.Caused by Personnel Error. Correct Zeroing Procedure Clarified
page: https://kanterella.com/05000259/LER-2D1987-2D006-2D01-2C_-3Aon_870302-2Cdiscovered_That_Routine_Flow_Rate_Surveillance_on_Control_Room_Emergency_Ventilation_Train_B_Performed_Incorrectly_on_870301.Cau…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000259/LER-1987-006-01, :on 870302,discovered That Routine Flow Rate Surveillance on Control Room Emergency Ventilation Train B Performed Incorrectly on 870301.Caused by Personnel Error. Correct Zeroing Procedure Clarified

LER-1996-016-02, :on 961220,missed Surveillance for Determining Response Time of High Containment Gaseous Radioactivity ESF Actuation Occurred.Caused by Inadequate Implementation of TS Requirements.Procedures Will Be Revised
type: Subject
label: 05000311/LER-1996-016-02, :on 961220,missed Surveillance for Determining Response Time of High Containment Gaseous Radioactivity ESF Actuation Occurred.Caused by Inadequate Implementation of TS Requirements.Procedures Will Be Revised
page: https://kanterella.com/05000311/LER-2D1996-2D016-2D02-2C_-3Aon_961220-2Cmissed_Surveillance_for_Determining_Response_Time_of_High_Containment_Gaseous_Radioactivity_ESF_Actuation_Occurred.Caused_by_Ina…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000311/LER-1996-016-02, :on 961220,missed Surveillance for Determining Response Time of High Containment Gaseous Radioactivity ESF Actuation Occurred.Caused by Inadequate Implementation of TS Requirements.Procedures Will Be Revised

05000311/LER-1996-014-03, :on 961201,EDG Automatic Start Resulted in ESF Actuation.Caused by Defective anti-pump Relay in 23 Csd Vital Infeed Breaker.Defective anti-pump Relay Identified
type: Subject
page: https://kanterella.com/05000311/LER-2D1996-2D014-2D03-2C_-3Aon_961201-2CEDG_Automatic_Start_Resulted_in_ESF_Actuation.Caused_by_Defective_anti-2Dpump_Relay_in_23_Csd_Vital_Infeed_Breaker.Defective_ant…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000311/LER-1996-014-03, :on 961201,EDG Automatic Start Resulted in ESF Actuation.Caused by Defective anti-pump Relay in 23 Csd Vital Infeed Breaker.Defective anti-pump Relay Identified

LER-1995-005-01, :on 950721,received Two Inadvertent SISs While Performing TS Test RO-12.Caused by Two Wires Taped Together After Being Removed from Terminal in Attempt to Isolate Sis. Procedure RO-12 Revised
type: Subject
label: 05000255/LER-1995-005-01, :on 950721,received Two Inadvertent SISs While Performing TS Test RO-12.Caused by Two Wires Taped Together After Being Removed from Terminal in Attempt to Isolate Sis. Procedure RO-12 Revised
page: https://kanterella.com/05000255/LER-2D1995-2D005-2D01-2C_-3Aon_950721-2Creceived_Two_Inadvertent_SISs_While_Performing_TS_Test_RO-2D12.Caused_by_Two_Wires_Taped_Together_After_Being_Removed_from_Termi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-005-01, :on 950721,received Two Inadvertent SISs While Performing TS Test RO-12.Caused by Two Wires Taped Together After Being Removed from Terminal in Attempt to Isolate Sis. Procedure RO-12 Revised

LER-1995-004-01, :on 950714,determined That Redundant DG Circuits Not Separated Per App R Due to Insufficient App R Program Documentation.Hourly Fire Tour Established in EDG 1-1 Room & Review of LERs for App R Completed
type: Subject
label: 05000255/LER-1995-004-01, :on 950714,determined That Redundant DG Circuits Not Separated Per App R Due to Insufficient App R Program Documentation.Hourly Fire Tour Established in EDG 1-1 Room & Review of LERs for App R Completed
page: https://kanterella.com/05000255/LER-2D1995-2D004-2D01-2C_-3Aon_950714-2Cdetermined_That_Redundant_DG_Circuits_Not_Separated_Per_App_R_Due_to_Insufficient_App_R_Program_Documentation.Hourly_Fire_Tour_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-004-01, :on 950714,determined That Redundant DG Circuits Not Separated Per App R Due to Insufficient App R Program Documentation.Hourly Fire Tour Established in EDG 1-1 Room & Review of LERs for App R Completed

Rps Design Basis.Mod Implemented to Effectively Isolate Grounded Monitor from Pressure Loop
type: Subject
label: 05000255/LER-1994-012-01, :on 940427,w/plant in Cold Shutdown,Determined That Internal Ground in Thermal Margin Monitor Caused Nonconformance W/Rps Design Basis.Mod Implemented to Effectively Isolate Grounded Monitor from Pressure Loop
page: https://kanterella.com/05000255/LER-2D1994-2D012-2D01-2C_-3Aon_940427-2Cw/plant_in_Cold_Shutdown-2CDetermined_That_Internal_Ground_in_Thermal_Margin_Monitor_Caused_Nonconformance_W/Rps_Design_Basis.Mo…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-012-01, :on 940427,w/plant in Cold Shutdown,Determined That Internal Ground in Thermal Margin Monitor Caused Nonconformance W/Rps Design Basis.Mod Implemented to Effectively Isolate Grounded Monitor from Pressure Loop

LER-1994-019, :on 941109,identified Failure to Test Redundant Equipment Per TS 3.3.2.f Prior Ro Removal of Electrical Breakers from Svc for Planned PM Due to Personnel Error. Administrative Procedure 5.14 Revised
type: Subject
label: 05000255/LER-1994-019, :on 941109,identified Failure to Test Redundant Equipment Per TS 3.3.2.f Prior Ro Removal of Electrical Breakers from Svc for Planned PM Due to Personnel Error. Administrative Procedure 5.14 Revised
page: https://kanterella.com/05000255/LER-2D1994-2D019-2C_-3Aon_941109-2Cidentified_Failure_to_Test_Redundant_Equipment_Per_TS_3.3.2.f_Prior_Ro_Removal_of_Electrical_Breakers_from_Svc_for_Planned_PM_Due_to_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-019, :on 941109,identified Failure to Test Redundant Equipment Per TS 3.3.2.f Prior Ro Removal of Electrical Breakers from Svc for Planned PM Due to Personnel Error. Administrative Procedure 5.14 Revised

LER-1994-017, :on 940902,EDG 1-1 Degraded Load Carrying Capability Identified.Caused by Inadequate Design Basis, Failure to Effectively Monitor for Engine Performance Degradation & Failure to Control Mods
type: Subject
label: 05000255/LER-1994-017, :on 940902,EDG 1-1 Degraded Load Carrying Capability Identified.Caused by Inadequate Design Basis, Failure to Effectively Monitor for Engine Performance Degradation & Failure to Control Mods
page: https://kanterella.com/05000255/LER-2D1994-2D017-2C_-3Aon_940902-2CEDG_1-2D1_Degraded_Load_Carrying_Capability_Identified.Caused_by_Inadequate_Design_Basis-2C_Failure_to_Effectively_Monitor_for_Engine…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-017, :on 940902,EDG 1-1 Degraded Load Carrying Capability Identified.Caused by Inadequate Design Basis, Failure to Effectively Monitor for Engine Performance Degradation & Failure to Control Mods

Exception of CETs
type: Subject
label: 05000255/LER-1994-008, :on 940329,30 & 0409,discovered That Some Class 1E Circuits Not Isolated or Separated from non-Class 1E Circuits Due to Lack of Engineering Design Guides.Subj Deviations Corrected W/Exception of CETs
page: https://kanterella.com/05000255/LER-2D1994-2D008-2C_-3Aon_940329-2C30_-26_0409-2Cdiscovered_That_Some_Class_1E_Circuits_Not_Isolated_or_Separated_from_non-2DClass_1E_Circuits_Due_to_Lack_of_Engineerin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-008, :on 940329,30 & 0409,discovered That Some Class 1E Circuits Not Isolated or Separated from non-Class 1E Circuits Due to Lack of Engineering Design Guides.Subj Deviations Corrected W/Exception of CETs

05000255/LER-1994-013, :on 940427,unsupported RCP Instrument Tubing Identified as Being Outside of Plant Design Basis Due to Lack of Supports.Tubing Supports Installed & Now Conforms to Spec Criteria
type: Subject
page: https://kanterella.com/05000255/LER-2D1994-2D013-2C_-3Aon_940427-2Cunsupported_RCP_Instrument_Tubing_Identified_as_Being_Outside_of_Plant_Design_Basis_Due_to_Lack_of_Supports.Tubing_Supports_Installed…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-013, :on 940427,unsupported RCP Instrument Tubing Identified as Being Outside of Plant Design Basis Due to Lack of Supports.Tubing Supports Installed & Now Conforms to Spec Criteria

LER-1994-006, :on 940217,plant Shutdown Per TSs Due to Leak on Asme,Section Xi,Class 2 saftey-related Check Valve. Caused by Through Wall Defect on Valve CK-ES3166.Check Valves CK-ES3166 & CK-ES3188 Replaced
type: Subject
label: 05000255/LER-1994-006, :on 940217,plant Shutdown Per TSs Due to Leak on Asme,Section Xi,Class 2 saftey-related Check Valve. Caused by Through Wall Defect on Valve CK-ES3166.Check Valves CK-ES3166 & CK-ES3188 Replaced
page: https://kanterella.com/05000255/LER-2D1994-2D006-2C_-3Aon_940217-2Cplant_Shutdown_Per_TSs_Due_to_Leak_on_Asme-2CSection_Xi-2CClass_2_saftey-2Drelated_Check_Valve._Caused_by_Through_Wall_Defect_on_Valv…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-006, :on 940217,plant Shutdown Per TSs Due to Leak on Asme,Section Xi,Class 2 saftey-related Check Valve. Caused by Through Wall Defect on Valve CK-ES3166.Check Valves CK-ES3166 & CK-ES3188 Replaced

LER-1994-002, :on 940126,inadvertent Containment Spray Pump ESF Actuation Occurred During Performance of TS Surveillance Testing.Caused by Inadequate Procedure.Tssp Q0-1 Modified to Warn Operators of CSP Start
type: Subject
label: 05000255/LER-1994-002, :on 940126,inadvertent Containment Spray Pump ESF Actuation Occurred During Performance of TS Surveillance Testing.Caused by Inadequate Procedure.Tssp Q0-1 Modified to Warn Operators of CSP Start
page: https://kanterella.com/05000255/LER-2D1994-2D002-2C_-3Aon_940126-2Cinadvertent_Containment_Spray_Pump_ESF_Actuation_Occurred_During_Performance_of_TS_Surveillance_Testing.Caused_by_Inadequate_Procedur…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-002, :on 940126,inadvertent Containment Spray Pump ESF Actuation Occurred During Performance of TS Surveillance Testing.Caused by Inadequate Procedure.Tssp Q0-1 Modified to Warn Operators of CSP Start

LER-1993-004, :on 930630,fuel Rod Failed & Loss of SNM Discovered Following Refueling Operations.Caused by Core Shroud & Fuel Assembly Interface Problem.Fuel Assembly Insps Increased & Failed Fuel Response Plan Implemented
type: Subject
label: 05000255/LER-1993-004, :on 930630,fuel Rod Failed & Loss of SNM Discovered Following Refueling Operations.Caused by Core Shroud & Fuel Assembly Interface Problem.Fuel Assembly Insps Increased & Failed Fuel Response Plan Implemented
page: https://kanterella.com/05000255/LER-2D1993-2D004-2C_-3Aon_930630-2Cfuel_Rod_Failed_-26_Loss_of_SNM_Discovered_Following_Refueling_Operations.Caused_by_Core_Shroud_-26_Fuel_Assembly_Interface_Problem.F…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-004, :on 930630,fuel Rod Failed & Loss of SNM Discovered Following Refueling Operations.Caused by Core Shroud & Fuel Assembly Interface Problem.Fuel Assembly Insps Increased & Failed Fuel Response Plan Implemented

LER-1993-006-01, :on 930804,determined That Reg Guide 1.97, Category 1,pressurizer Level Indicator Powered from non- Safety Related Power Supply.Caused by Personnel Error. Indicator LIA-0102A Powered from Ac Source
type: Subject
label: 05000255/LER-1993-006-01, :on 930804,determined That Reg Guide 1.97, Category 1,pressurizer Level Indicator Powered from non- Safety Related Power Supply.Caused by Personnel Error. Indicator LIA-0102A Powered from Ac Source
page: https://kanterella.com/05000255/LER-2D1993-2D006-2D01-2C_-3Aon_930804-2Cdetermined_That_Reg_Guide_1.97-2C_Category_1-2Cpressurizer_Level_Indicator_Powered_from_non-2D_Safety_Related_Power_Supply.Cause…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-006-01, :on 930804,determined That Reg Guide 1.97, Category 1,pressurizer Level Indicator Powered from non- Safety Related Power Supply.Caused by Personnel Error. Indicator LIA-0102A Powered from Ac Source

LER-1993-005-01, :on 930720,both EDGs Started After Receiving Undervoltage Signal Due to de-energization of Electrical Bus 1C.Caused by Inadequate Design Info.Sys Engineers Will Be Trained on Event
type: Subject
label: 05000255/LER-1993-005-01, :on 930720,both EDGs Started After Receiving Undervoltage Signal Due to de-energization of Electrical Bus 1C.Caused by Inadequate Design Info.Sys Engineers Will Be Trained on Event
page: https://kanterella.com/05000255/LER-2D1993-2D005-2D01-2C_-3Aon_930720-2Cboth_EDGs_Started_After_Receiving_Undervoltage_Signal_Due_to_de-2Denergization_of_Electrical_Bus_1C.Caused_by_Inadequate_Design_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-005-01, :on 930720,both EDGs Started After Receiving Undervoltage Signal Due to de-energization of Electrical Bus 1C.Caused by Inadequate Design Info.Sys Engineers Will Be Trained on Event

ML20217C747
type: Subject
page: https://kanterella.com/ML20217C747
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: ML20217C747

O Containment Integrity in Tact.Caused by Leakage Due to Improper Adjustment of Valve Operator Travel Stops
type: Subject
label: 05000280/LER-1989-016, :on 890423,inadvertent Positive Reactivity Addition by Boron Dilution Occurred W/O Containment Integrity in Tact.Caused by Leakage Due to Improper Adjustment of Valve Operator Travel Stops
page: https://kanterella.com/05000280/LER-2D1989-2D016-2C_-3Aon_890423-2Cinadvertent_Positive_Reactivity_Addition_by_Boron_Dilution_Occurred_W/O_Containment_Integrity_in_Tact.Caused_by_Leakage_Due_to_Improp…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1989-016, :on 890423,inadvertent Positive Reactivity Addition by Boron Dilution Occurred W/O Containment Integrity in Tact.Caused by Leakage Due to Improper Adjustment of Valve Operator Travel Stops

ML20216D350
type: Subject
page: https://kanterella.com/ML20216D350
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: ML20216D350

LER-1989-005, :on 890310,loss of Power to Alternate Plant Ventilation Effluent Radiation Monitor Occurred.Caused by Electrical Loads in Excess of Circuit Capacity.Power Restored to Alternate Sampling Sys
type: Subject
label: 05000529/LER-1989-005, :on 890310,loss of Power to Alternate Plant Ventilation Effluent Radiation Monitor Occurred.Caused by Electrical Loads in Excess of Circuit Capacity.Power Restored to Alternate Sampling Sys
page: https://kanterella.com/05000529/LER-2D1989-2D005-2C_-3Aon_890310-2Closs_of_Power_to_Alternate_Plant_Ventilation_Effluent_Radiation_Monitor_Occurred.Caused_by_Electrical_Loads_in_Excess_of_Circuit_Capa…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000529/LER-1989-005, :on 890310,loss of Power to Alternate Plant Ventilation Effluent Radiation Monitor Occurred.Caused by Electrical Loads in Excess of Circuit Capacity.Power Restored to Alternate Sampling Sys

LER-1996-005-02, :on 960627,surveillance of Fuel Handling Bldg Ventilation Sys Charcoal Adsorber Test Was Missed.Caused by Inattention to Detail.Individual Involved Received Appropriate Level of Positive Discipline
type: Subject
label: 05000311/LER-1996-005-02, :on 960627,surveillance of Fuel Handling Bldg Ventilation Sys Charcoal Adsorber Test Was Missed.Caused by Inattention to Detail.Individual Involved Received Appropriate Level of Positive Discipline
page: https://kanterella.com/05000311/LER-2D1996-2D005-2D02-2C_-3Aon_960627-2Csurveillance_of_Fuel_Handling_Bldg_Ventilation_Sys_Charcoal_Adsorber_Test_Was_Missed.Caused_by_Inattention_to_Detail.Individual_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000311/LER-1996-005-02, :on 960627,surveillance of Fuel Handling Bldg Ventilation Sys Charcoal Adsorber Test Was Missed.Caused by Inattention to Detail.Individual Involved Received Appropriate Level of Positive Discipline

LER-1988-017, :on 880606,foreign Matl Found in Temporary Discharge Cone Strainer & Deficiencies Found in Sump Screens.Caused by Inadequate Insp Program During Const Activities.Foreign Objects Removed
type: Subject
label: 05000280/LER-1988-017, :on 880606,foreign Matl Found in Temporary Discharge Cone Strainer & Deficiencies Found in Sump Screens.Caused by Inadequate Insp Program During Const Activities.Foreign Objects Removed
page: https://kanterella.com/05000280/LER-2D1988-2D017-2C_-3Aon_880606-2Cforeign_Matl_Found_in_Temporary_Discharge_Cone_Strainer_-26_Deficiencies_Found_in_Sump_Screens.Caused_by_Inadequate_Insp_Program_Duri…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1988-017, :on 880606,foreign Matl Found in Temporary Discharge Cone Strainer & Deficiencies Found in Sump Screens.Caused by Inadequate Insp Program During Const Activities.Foreign Objects Removed

05000272/LER-1996-005-03, :on 960325,TS Surveillance Requirement Implementation Deficiencies Identified.Caused by Lack of Adequate Controls & Understanding of Development Weakness. Procedures Revised
type: Subject
page: https://kanterella.com/05000272/LER-2D1996-2D005-2D03-2C_-3Aon_960325-2CTS_Surveillance_Requirement_Implementation_Deficiencies_Identified.Caused_by_Lack_of_Adequate_Controls_-26_Understanding_of_Deve…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1996-005-03, :on 960325,TS Surveillance Requirement Implementation Deficiencies Identified.Caused by Lack of Adequate Controls & Understanding of Development Weakness. Procedures Revised

05000364/LER-2023-003, Pressurizer Code Safety Valve Lift Pressure Outside of Technical Specifications Limits
type: Subject
page: https://kanterella.com/05000364/LER-2D2023-2D003-2C_Pressurizer_Code_Safety_Valve_Lift_Pressure_Outside_of_Technical_Specifications_Limits
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000364/LER-2023-003, Pressurizer Code Safety Valve Lift Pressure Outside of Technical Specifications Limits

ML23251A016
type: Subject
page: https://kanterella.com/ML23251A016
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: ML23251A016

Inservice Testing Program.Caused by Typo on Data Sheet Used to Record Pump Vibration Data.Typo Corrected
type: Subject
label: 05000334/LER-1989-006-01, :on 890513,discovered That Pump Not Placed on Increased Frequency Testing in Accordance W/Inservice Testing Program.Caused by Typo on Data Sheet Used to Record Pump Vibration Data.Typo Corrected
page: https://kanterella.com/05000334/LER-2D1989-2D006-2D01-2C_-3Aon_890513-2Cdiscovered_That_Pump_Not_Placed_on_Increased_Frequency_Testing_in_Accordance_W/Inservice_Testing_Program.Caused_by_Typo_on_Data_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000334/LER-1989-006-01, :on 890513,discovered That Pump Not Placed on Increased Frequency Testing in Accordance W/Inservice Testing Program.Caused by Typo on Data Sheet Used to Record Pump Vibration Data.Typo Corrected

05000382/LER-1998-013, :on 980701,IST Valve Surveillances Were Missed. Caused by Inadequate Processing of Info Transferred Between Operations Procedure Group & Programs Engineering.Procedure Revised
type: Subject
page: https://kanterella.com/05000382/LER-2D1998-2D013-2C_-3Aon_980701-2CIST_Valve_Surveillances_Were_Missed._Caused_by_Inadequate_Processing_of_Info_Transferred_Between_Operations_Procedure_Group_-26_Progr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1998-013, :on 980701,IST Valve Surveillances Were Missed. Caused by Inadequate Processing of Info Transferred Between Operations Procedure Group & Programs Engineering.Procedure Revised

LER-1998-011, :on 980603,TS 3.0.3 Entry Was Noted.Caused by Component Cooling Water Makeup Check Valve Failing Ist. Operability of a Train of CCW Was Restored Immediately & Check Valve Internals Were Replaced
type: Subject
label: 05000382/LER-1998-011, :on 980603,TS 3.0.3 Entry Was Noted.Caused by Component Cooling Water Makeup Check Valve Failing Ist. Operability of a Train of CCW Was Restored Immediately & Check Valve Internals Were Replaced
page: https://kanterella.com/05000382/LER-2D1998-2D011-2C_-3Aon_980603-2CTS_3.0.3_Entry_Was_Noted.Caused_by_Component_Cooling_Water_Makeup_Check_Valve_Failing_Ist._Operability_of_a_Train_of_CCW_Was_Restored…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1998-011, :on 980603,TS 3.0.3 Entry Was Noted.Caused by Component Cooling Water Makeup Check Valve Failing Ist. Operability of a Train of CCW Was Restored Immediately & Check Valve Internals Were Replaced

LER-1999-010-01, :on 990726,discovered Inadequate Pumping Capacity in Dry Cooling Tower Area.Caused by Inadequate Design Control.Portable Pumps Were Installed in Each Dry Cooling Tower Areas to Ensure Sufficient Pumping Capacity
type: Subject
label: 05000382/LER-1999-010-01, :on 990726,discovered Inadequate Pumping Capacity in Dry Cooling Tower Area.Caused by Inadequate Design Control.Portable Pumps Were Installed in Each Dry Cooling Tower Areas to Ensure Sufficient Pumping Capacity
page: https://kanterella.com/05000382/LER-2D1999-2D010-2D01-2C_-3Aon_990726-2Cdiscovered_Inadequate_Pumping_Capacity_in_Dry_Cooling_Tower_Area.Caused_by_Inadequate_Design_Control.Portable_Pumps_Were_Install…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1999-010-01, :on 990726,discovered Inadequate Pumping Capacity in Dry Cooling Tower Area.Caused by Inadequate Design Control.Portable Pumps Were Installed in Each Dry Cooling Tower Areas to Ensure Sufficient Pumping Capacity

LER-1986-039-01, :on 860903,control Room Essential Filtration Actuation Signal (CREFAS) Generated After CREFAS Module Removed from Bypass Before All Trip Inputs Cleared. Appropriate Disciplinary Action Taken
type: Subject
label: 05000529/LER-1986-039-01, :on 860903,control Room Essential Filtration Actuation Signal (CREFAS) Generated After CREFAS Module Removed from Bypass Before All Trip Inputs Cleared. Appropriate Disciplinary Action Taken
page: https://kanterella.com/05000529/LER-2D1986-2D039-2D01-2C_-3Aon_860903-2Ccontrol_Room_Essential_Filtration_Actuation_Signal_-28CREFAS-29_Generated_After_CREFAS_Module_Removed_from_Bypass_Before_All_Tri…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000529/LER-1986-039-01, :on 860903,control Room Essential Filtration Actuation Signal (CREFAS) Generated After CREFAS Module Removed from Bypass Before All Trip Inputs Cleared. Appropriate Disciplinary Action Taken

05000281/LER-1986-017-02, :on 861121,during Periodic Test 8.5A, Inadvertent Auto Start of Emergency Diesel Generator 3 (EIIS-ER) Occurred.Caused by Personnel Error.Testing Suspended & Diesel Shut Down
type: Subject
page: https://kanterella.com/05000281/LER-2D1986-2D017-2D02-2C_-3Aon_861121-2Cduring_Periodic_Test_8.5A-2C_Inadvertent_Auto_Start_of_Emergency_Diesel_Generator_3_-28EIIS-2DER-29_Occurred.Caused_by_Personnel…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1986-017-02, :on 861121,during Periodic Test 8.5A, Inadvertent Auto Start of Emergency Diesel Generator 3 (EIIS-ER) Occurred.Caused by Personnel Error.Testing Suspended & Diesel Shut Down

05000382/LER-1999-005-01, :on 980702,determined That Four Contacts in Control Circuits of EFW Control Valves Were Untested.Caused by Personnel Error.Untested Contacts Have Been Tested
type: Subject
page: https://kanterella.com/05000382/LER-2D1999-2D005-2D01-2C_-3Aon_980702-2Cdetermined_That_Four_Contacts_in_Control_Circuits_of_EFW_Control_Valves_Were_Untested.Caused_by_Personnel_Error.Untested_Contact…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1999-005-01, :on 980702,determined That Four Contacts in Control Circuits of EFW Control Valves Were Untested.Caused by Personnel Error.Untested Contacts Have Been Tested

LER-1998-005-01, :on 980921,HPCI Was Removed from Service to Repair Steam Leak in Drain Trap by Pass.Caused by Localized Erosion of Valve Body.Valve Was Declared Inoperable & Was Replaced with Manual Valve
type: Subject
label: 05000263/LER-1998-005-01, :on 980921,HPCI Was Removed from Service to Repair Steam Leak in Drain Trap by Pass.Caused by Localized Erosion of Valve Body.Valve Was Declared Inoperable & Was Replaced with Manual Valve
page: https://kanterella.com/05000263/LER-2D1998-2D005-2D01-2C_-3Aon_980921-2CHPCI_Was_Removed_from_Service_to_Repair_Steam_Leak_in_Drain_Trap_by_Pass.Caused_by_Localized_Erosion_of_Valve_Body.Valve_Was_Dec…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000263/LER-1998-005-01, :on 980921,HPCI Was Removed from Service to Repair Steam Leak in Drain Trap by Pass.Caused by Localized Erosion of Valve Body.Valve Was Declared Inoperable & Was Replaced with Manual Valve

LER-1998-005-02, :on 980924,suspended Safeguards During Severe Weather Due to Personnel Safety.Caused by Severe Weather Associated with Effects of Hurricane Georges.Fully Instituted Compensatory Measure.With
type: Subject
label: 05000250/LER-1998-005-02, :on 980924,suspended Safeguards During Severe Weather Due to Personnel Safety.Caused by Severe Weather Associated with Effects of Hurricane Georges.Fully Instituted Compensatory Measure.With
page: https://kanterella.com/05000250/LER-2D1998-2D005-2D02-2C_-3Aon_980924-2Csuspended_Safeguards_During_Severe_Weather_Due_to_Personnel_Safety.Caused_by_Severe_Weather_Associated_with_Effects_of_Hurricane…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1998-005-02, :on 980924,suspended Safeguards During Severe Weather Due to Personnel Safety.Caused by Severe Weather Associated with Effects of Hurricane Georges.Fully Instituted Compensatory Measure.With

LER-1998-010-01, :on 980825,potential Violation of Design Criteria During Single Auxiliary Transformer Operation Occurred.Caused by Failure to Adequately Define Job Performance Stds.Temporary Change Notice Issued
type: Subject
label: 05000289/LER-1998-010-01, :on 980825,potential Violation of Design Criteria During Single Auxiliary Transformer Operation Occurred.Caused by Failure to Adequately Define Job Performance Stds.Temporary Change Notice Issued
page: https://kanterella.com/05000289/LER-2D1998-2D010-2D01-2C_-3Aon_980825-2Cpotential_Violation_of_Design_Criteria_During_Single_Auxiliary_Transformer_Operation_Occurred.Caused_by_Failure_to_Adequately_De…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000289/LER-1998-010-01, :on 980825,potential Violation of Design Criteria During Single Auxiliary Transformer Operation Occurred.Caused by Failure to Adequately Define Job Performance Stds.Temporary Change Notice Issued

05000382/LER-1997-018, :on 970428,voluntary LER for Dropped New Fuel Assembly Was Issued.Caused by Human Error.Sfhm Grappling Tool Was Inspected for Damage or Misalignment
type: Subject
page: https://kanterella.com/05000382/LER-2D1997-2D018-2C_-3Aon_970428-2Cvoluntary_LER_for_Dropped_New_Fuel_Assembly_Was_Issued.Caused_by_Human_Error.Sfhm_Grappling_Tool_Was_Inspected_for_Damage_or_Misalign…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1997-018, :on 970428,voluntary LER for Dropped New Fuel Assembly Was Issued.Caused by Human Error.Sfhm Grappling Tool Was Inspected for Damage or Misalignment

05000321/LER-1985-034, :on 851014,plant Personnel Received RWCU Isolation When Pump Inboard & Outboard Isolation Valves Isolated on High Differential.Caused by Intermittent Spiking Flow Transmitter
type: Subject
page: https://kanterella.com/05000321/LER-2D1985-2D034-2C_-3Aon_851014-2Cplant_Personnel_Received_RWCU_Isolation_When_Pump_Inboard_-26_Outboard_Isolation_Valves_Isolated_on_High_Differential.Caused_by_Inter…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000321/LER-1985-034, :on 851014,plant Personnel Received RWCU Isolation When Pump Inboard & Outboard Isolation Valves Isolated on High Differential.Caused by Intermittent Spiking Flow Transmitter

05000354/LER-1996-026-01, :on 961108,ESF Actuation/Single Rod Scram Occurred Due to Stuck Scram Solenoid Pilot.Sspv Replaced & CR 42-07 Returned to Svc
type: Subject
page: https://kanterella.com/05000354/LER-2D1996-2D026-2D01-2C_-3Aon_961108-2CESF_Actuation/Single_Rod_Scram_Occurred_Due_to_Stuck_Scram_Solenoid_Pilot.Sspv_Replaced_-26_CR_42-2D07_Returned_to_Svc
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000354/LER-1996-026-01, :on 961108,ESF Actuation/Single Rod Scram Occurred Due to Stuck Scram Solenoid Pilot.Sspv Replaced & CR 42-07 Returned to Svc

LER-1996-024, :on 961011,plant Mod Created Unanalyzed Condition Re Emergency Feedwater Availability.Caused by Inadequate Translation of Assumptions from Earlier Designs. Design Basis Documents Were Corrected
type: Subject
label: 05000302/LER-1996-024, :on 961011,plant Mod Created Unanalyzed Condition Re Emergency Feedwater Availability.Caused by Inadequate Translation of Assumptions from Earlier Designs. Design Basis Documents Were Corrected
page: https://kanterella.com/05000302/LER-2D1996-2D024-2C_-3Aon_961011-2Cplant_Mod_Created_Unanalyzed_Condition_Re_Emergency_Feedwater_Availability.Caused_by_Inadequate_Translation_of_Assumptions_from_Earli…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000302/LER-1996-024, :on 961011,plant Mod Created Unanalyzed Condition Re Emergency Feedwater Availability.Caused by Inadequate Translation of Assumptions from Earlier Designs. Design Basis Documents Were Corrected

LER-1997-004, :on 970113,potential for Particular Common Mode Failure That Could Affect Opposite Trains of Unit 2 Safeguards Equipment Was Noted.Caused by Lack of Physical Separation.Replaced Subject Circuit Breakers
type: Subject
label: 05000266/LER-1997-004, :on 970113,potential for Particular Common Mode Failure That Could Affect Opposite Trains of Unit 2 Safeguards Equipment Was Noted.Caused by Lack of Physical Separation.Replaced Subject Circuit Breakers
page: https://kanterella.com/05000266/LER-2D1997-2D004-2C_-3Aon_970113-2Cpotential_for_Particular_Common_Mode_Failure_That_Could_Affect_Opposite_Trains_of_Unit_2_Safeguards_Equipment_Was_Noted.Caused_by_Lac…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000266/LER-1997-004, :on 970113,potential for Particular Common Mode Failure That Could Affect Opposite Trains of Unit 2 Safeguards Equipment Was Noted.Caused by Lack of Physical Separation.Replaced Subject Circuit Breakers

LER-1997-001, :on 970108,safety Injection Delay Times Exceeded Design Basis Values.Caused by Degraded Voltage Conditions.Licensee Engineers Will Prepare FSAR Change Requests to Reflect LBLOCA Evaluation
type: Subject
label: 05000266/LER-1997-001, :on 970108,safety Injection Delay Times Exceeded Design Basis Values.Caused by Degraded Voltage Conditions.Licensee Engineers Will Prepare FSAR Change Requests to Reflect LBLOCA Evaluation
page: https://kanterella.com/05000266/LER-2D1997-2D001-2C_-3Aon_970108-2Csafety_Injection_Delay_Times_Exceeded_Design_Basis_Values.Caused_by_Degraded_Voltage_Conditions.Licensee_Engineers_Will_Prepare_FSAR_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000266/LER-1997-001, :on 970108,safety Injection Delay Times Exceeded Design Basis Values.Caused by Degraded Voltage Conditions.Licensee Engineers Will Prepare FSAR Change Requests to Reflect LBLOCA Evaluation

LER-1996-031, :on 961009,plant Trip During Reactor Protection Sys Surveillance Occurred.Cause Has Not Been Determined.Ac Logic Matrix Components Were Undergoing Testing at Time of Trip Were Replaced
type: Subject
label: 05000309/LER-1996-031, :on 961009,plant Trip During Reactor Protection Sys Surveillance Occurred.Cause Has Not Been Determined.Ac Logic Matrix Components Were Undergoing Testing at Time of Trip Were Replaced
page: https://kanterella.com/05000309/LER-2D1996-2D031-2C_-3Aon_961009-2Cplant_Trip_During_Reactor_Protection_Sys_Surveillance_Occurred.Cause_Has_Not_Been_Determined.Ac_Logic_Matrix_Components_Were_Undergoi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000309/LER-1996-031, :on 961009,plant Trip During Reactor Protection Sys Surveillance Occurred.Cause Has Not Been Determined.Ac Logic Matrix Components Were Undergoing Testing at Time of Trip Were Replaced

LER-1997-001, :on 970103,nuclear Fuel Supplier Failed to Analyze Turbine Pressure Regulator Downscale Failure Event in off-rated Condition Per 10CFR21.21.Caused by Error in Nuclear Fuel Supplier.Mcpr Will Be Implemented
type: Subject
label: 05000461/LER-1997-001, :on 970103,nuclear Fuel Supplier Failed to Analyze Turbine Pressure Regulator Downscale Failure Event in off-rated Condition Per 10CFR21.21.Caused by Error in Nuclear Fuel Supplier.Mcpr Will Be Implemented
page: https://kanterella.com/05000461/LER-2D1997-2D001-2C_-3Aon_970103-2Cnuclear_Fuel_Supplier_Failed_to_Analyze_Turbine_Pressure_Regulator_Downscale_Failure_Event_in_off-2Drated_Condition_Per_10CFR21.21.Ca…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000461/LER-1997-001, :on 970103,nuclear Fuel Supplier Failed to Analyze Turbine Pressure Regulator Downscale Failure Event in off-rated Condition Per 10CFR21.21.Caused by Error in Nuclear Fuel Supplier.Mcpr Will Be Implemented

LER-1996-019, :on 961127,spent Fuel Storage Racks Outside Design Basis Due to Boraflex Degradation.Boric Acid Has Been Placed in Immediate Vicinity of Spent Fuel Pool in Event Manual Addition Is Required
type: Subject
label: 05000282/LER-1996-019, :on 961127,spent Fuel Storage Racks Outside Design Basis Due to Boraflex Degradation.Boric Acid Has Been Placed in Immediate Vicinity of Spent Fuel Pool in Event Manual Addition Is Required
page: https://kanterella.com/05000282/LER-2D1996-2D019-2C_-3Aon_961127-2Cspent_Fuel_Storage_Racks_Outside_Design_Basis_Due_to_Boraflex_Degradation.Boric_Acid_Has_Been_Placed_in_Immediate_Vicinity_of_Spent_F…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000282/LER-1996-019, :on 961127,spent Fuel Storage Racks Outside Design Basis Due to Boraflex Degradation.Boric Acid Has Been Placed in Immediate Vicinity of Spent Fuel Pool in Event Manual Addition Is Required

05000382/LER-1996-011-01, :on 960820,CR Normal Ventilation Isolation Valves (HVC-101 & HVC-102) Were Leaking.Caused by Debris Which Accumulated Inside Valves Disc Regions.Valves Were Closed
type: Subject
page: https://kanterella.com/05000382/LER-2D1996-2D011-2D01-2C_-3Aon_960820-2CCR_Normal_Ventilation_Isolation_Valves_-28HVC-2D101_-26_HVC-2D102-29_Were_Leaking.Caused_by_Debris_Which_Accumulated_Inside_Valv…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1996-011-01, :on 960820,CR Normal Ventilation Isolation Valves (HVC-101 & HVC-102) Were Leaking.Caused by Debris Which Accumulated Inside Valves Disc Regions.Valves Were Closed

05000382/LER-1996-009-01, :on 960725,failure of Containment Vacuum Relief Valves CVR-402A & CVR-402B Occurred.Caused by Excessive Roughness in Valve Body Bore.Valves Replaced & Retested
type: Subject
page: https://kanterella.com/05000382/LER-2D1996-2D009-2D01-2C_-3Aon_960725-2Cfailure_of_Containment_Vacuum_Relief_Valves_CVR-2D402A_-26_CVR-2D402B_Occurred.Caused_by_Excessive_Roughness_in_Valve_Body_Bore.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1996-009-01, :on 960725,failure of Containment Vacuum Relief Valves CVR-402A & CVR-402B Occurred.Caused by Excessive Roughness in Valve Body Bore.Valves Replaced & Retested

05000321/LER-1996-010, :on 960629,failure of Turbine Overspeed Control Valve Occurred.Caused by Failed Hydraulic Actuator Diaphragm.Replaced Failed Diaphragm & HPCI Control Valve Diaphragm
type: Subject
page: https://kanterella.com/05000321/LER-2D1996-2D010-2C_-3Aon_960629-2Cfailure_of_Turbine_Overspeed_Control_Valve_Occurred.Caused_by_Failed_Hydraulic_Actuator_Diaphragm.Replaced_Failed_Diaphragm_-26_HPCI_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000321/LER-1996-010, :on 960629,failure of Turbine Overspeed Control Valve Occurred.Caused by Failed Hydraulic Actuator Diaphragm.Replaced Failed Diaphragm & HPCI Control Valve Diaphragm

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 388A
wiki page sort key: 05000382/LER-1996-013-01, :on 960822,possible Operation in Excess of 100% Licensed Power.Cause Is Being Investigated

LER-1996-007-01, :on 960411,discovered That Design Basis Flow Rates Could Not Be Achieved on Auxiliary Component Cooling Water Sys.Caused by Inadequate Design.Modified Sys Design & Reviewed Other safety-related Fluid Systems
type: Subject
label: 05000382/LER-1996-007-01, :on 960411,discovered That Design Basis Flow Rates Could Not Be Achieved on Auxiliary Component Cooling Water Sys.Caused by Inadequate Design.Modified Sys Design & Reviewed Other safety-related Fluid Systems
page: https://kanterella.com/05000382/LER-2D1996-2D007-2D01-2C_-3Aon_960411-2Cdiscovered_That_Design_Basis_Flow_Rates_Could_Not_Be_Achieved_on_Auxiliary_Component_Cooling_Water_Sys.Caused_by_Inadequate_Desi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1996-007-01, :on 960411,discovered That Design Basis Flow Rates Could Not Be Achieved on Auxiliary Component Cooling Water Sys.Caused by Inadequate Design.Modified Sys Design & Reviewed Other safety-related Fluid Systems

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 388A
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-1985-004-01, :on 850128,reactor Tripped on lo-lo Steam Generator Level When Main Feedwater Pump Tripped on Low Suction Pressure Signal.Caused by Failure of Pneumatic Pressure Transmitter.Components Replaced
type: Subject
label: 05000369/LER-1985-004-01, :on 850128,reactor Tripped on lo-lo Steam Generator Level When Main Feedwater Pump Tripped on Low Suction Pressure Signal.Caused by Failure of Pneumatic Pressure Transmitter.Components Replaced
page: https://kanterella.com/05000369/LER-2D1985-2D004-2D01-2C_-3Aon_850128-2Creactor_Tripped_on_lo-2Dlo_Steam_Generator_Level_When_Main_Feedwater_Pump_Tripped_on_Low_Suction_Pressure_Signal.Caused_by_Failu…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000369/LER-1985-004-01, :on 850128,reactor Tripped on lo-lo Steam Generator Level When Main Feedwater Pump Tripped on Low Suction Pressure Signal.Caused by Failure of Pneumatic Pressure Transmitter.Components Replaced

LER-1996-003-01, :on 960130,logarithmic Power Channels Indicated 5 Percent of Scale Below Actual Power.Caused by Not Periodically cross-correlating Log Power to Linear Power. Recalibrated Log Power Channels
type: Subject
label: 05000382/LER-1996-003-01, :on 960130,logarithmic Power Channels Indicated 5 Percent of Scale Below Actual Power.Caused by Not Periodically cross-correlating Log Power to Linear Power. Recalibrated Log Power Channels
page: https://kanterella.com/05000382/LER-2D1996-2D003-2D01-2C_-3Aon_960130-2Clogarithmic_Power_Channels_Indicated_5_Percent_of_Scale_Below_Actual_Power.Caused_by_Not_Periodically_cross-2Dcorrelating_Log_Po…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000382/LER-1996-003-01, :on 960130,logarithmic Power Channels Indicated 5 Percent of Scale Below Actual Power.Caused by Not Periodically cross-correlating Log Power to Linear Power. Recalibrated Log Power Channels

LER-1995-005-01, :on 951109,manual Reactor Trip Occurred Due to Increasing SG 11 Water Level.Caused by Failure of Digital Control Module FIC-1111.Controller Sent to Vendor for Troubleshooting & Root Cause Analysis
type: Subject
label: 05000317/LER-1995-005-01, :on 951109,manual Reactor Trip Occurred Due to Increasing SG 11 Water Level.Caused by Failure of Digital Control Module FIC-1111.Controller Sent to Vendor for Troubleshooting & Root Cause Analysis
page: https://kanterella.com/05000317/LER-2D1995-2D005-2D01-2C_-3Aon_951109-2Cmanual_Reactor_Trip_Occurred_Due_to_Increasing_SG_11_Water_Level.Caused_by_Failure_of_Digital_Control_Module_FIC-2D1111.Controll…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000317/LER-1995-005-01, :on 951109,manual Reactor Trip Occurred Due to Increasing SG 11 Water Level.Caused by Failure of Digital Control Module FIC-1111.Controller Sent to Vendor for Troubleshooting & Root Cause Analysis

LER-1984-023, :on 840723,unit Tripped from 100- Power on lo-lo Steam Generator Level Indication.Caused by Feedwater Sys Solenoid Valve Failure.Chart Recorder Added to Feedwater Valves by Hydraulic Pump Motor
type: Subject
label: 05000369/LER-1984-023, :on 840723,unit Tripped from 100% Power on lo-lo Steam Generator Level Indication.Caused by Feedwater Sys Solenoid Valve Failure.Chart Recorder Added to Feedwater Valves by Hydraulic Pump Motor
page: https://kanterella.com/05000369/LER-2D1984-2D023-2C_-3Aon_840723-2Cunit_Tripped_from_100-_Power_on_lo-2Dlo_Steam_Generator_Level_Indication.Caused_by_Feedwater_Sys_Solenoid_Valve_Failure.Chart_Recorde…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000369/LER-1984-023, :on 840723,unit Tripped from 100% Power on lo-lo Steam Generator Level Indication.Caused by Feedwater Sys Solenoid Valve Failure.Chart Recorder Added to Feedwater Valves by Hydraulic Pump Motor

LER-1995-027, :on 951027,grab Sample Not Taken within Required 8 Hour Period.Caused by Equipment Failure Resulting in 12 Hour Hot Shutdown.Investigation & Repair of Equipment Failures Initiated
type: Subject
label: 05000354/LER-1995-027, :on 951027,grab Sample Not Taken within Required 8 Hour Period.Caused by Equipment Failure Resulting in 12 Hour Hot Shutdown.Investigation & Repair of Equipment Failures Initiated
page: https://kanterella.com/05000354/LER-2D1995-2D027-2C_-3Aon_951027-2Cgrab_Sample_Not_Taken_within_Required_8_Hour_Period.Caused_by_Equipment_Failure_Resulting_in_12_Hour_Hot_Shutdown.Investigation_-26_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000354/LER-1995-027, :on 951027,grab Sample Not Taken within Required 8 Hour Period.Caused by Equipment Failure Resulting in 12 Hour Hot Shutdown.Investigation & Repair of Equipment Failures Initiated

LER-1995-005-01, :on 951012,invalid Heat Sink Protection Sys Actuation Occurred.Caused by Failure of Logic Modules.Logic Module Failure Analysis Will Continue in Order to Substantiate Suspected Failure Mode
type: Subject
label: 05000289/LER-1995-005-01, :on 951012,invalid Heat Sink Protection Sys Actuation Occurred.Caused by Failure of Logic Modules.Logic Module Failure Analysis Will Continue in Order to Substantiate Suspected Failure Mode
page: https://kanterella.com/05000289/LER-2D1995-2D005-2D01-2C_-3Aon_951012-2Cinvalid_Heat_Sink_Protection_Sys_Actuation_Occurred.Caused_by_Failure_of_Logic_Modules.Logic_Module_Failure_Analysis_Will_Contin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000289/LER-1995-005-01, :on 951012,invalid Heat Sink Protection Sys Actuation Occurred.Caused by Failure of Logic Modules.Logic Module Failure Analysis Will Continue in Order to Substantiate Suspected Failure Mode

LER-1984-023-01, :on 840601 & 11,during Turbine Overspeed Protection Test,Reactor Trip Occurred Involving RCS Specific Activity.Caused by Iodine Spiking.Primary Coolant Activity Will Be Monitored & Evaluated
type: Subject
label: 05000362/LER-1984-023-01, :on 840601 & 11,during Turbine Overspeed Protection Test,Reactor Trip Occurred Involving RCS Specific Activity.Caused by Iodine Spiking.Primary Coolant Activity Will Be Monitored & Evaluated
page: https://kanterella.com/05000362/LER-2D1984-2D023-2D01-2C_-3Aon_840601_-26_11-2Cduring_Turbine_Overspeed_Protection_Test-2CReactor_Trip_Occurred_Involving_RCS_Specific_Activity.Caused_by_Iodine_Spiking…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000362/LER-1984-023-01, :on 840601 & 11,during Turbine Overspeed Protection Test,Reactor Trip Occurred Involving RCS Specific Activity.Caused by Iodine Spiking.Primary Coolant Activity Will Be Monitored & Evaluated

LER-1984-020, :on 840606,reactor Tripped When Spurious Undervoltage Relay Actuation Deenergized One Reactor Coolant Pump.Caused by Component Malfunction.Further Testing Will Be Conducted to Determine Failure Mechanism
type: Subject
label: 05000369/LER-1984-020, :on 840606,reactor Tripped When Spurious Undervoltage Relay Actuation Deenergized One Reactor Coolant Pump.Caused by Component Malfunction.Further Testing Will Be Conducted to Determine Failure Mechanism
page: https://kanterella.com/05000369/LER-2D1984-2D020-2C_-3Aon_840606-2Creactor_Tripped_When_Spurious_Undervoltage_Relay_Actuation_Deenergized_One_Reactor_Coolant_Pump.Caused_by_Component_Malfunction.Furth…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000369/LER-1984-020, :on 840606,reactor Tripped When Spurious Undervoltage Relay Actuation Deenergized One Reactor Coolant Pump.Caused by Component Malfunction.Further Testing Will Be Conducted to Determine Failure Mechanism

O Full Containment Isolation.Caused by Staff Error & Procedural Inadequacy.All Licensed Operators to Receive Addl Training & Procedures Revised
type: Subject
label: 05000289/LER-1991-004, :on 911008,irradiated Fuel to Test Hoist Interlocks W/O Full Containment Isolation.Caused by Staff Error & Procedural Inadequacy.All Licensed Operators to Receive Addl Training & Procedures Revised
page: https://kanterella.com/05000289/LER-2D1991-2D004-2C_-3Aon_911008-2Cirradiated_Fuel_to_Test_Hoist_Interlocks_W/O_Full_Containment_Isolation.Caused_by_Staff_Error_-26_Procedural_Inadequacy.All_Licensed_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000289/LER-1991-004, :on 911008,irradiated Fuel to Test Hoist Interlocks W/O Full Containment Isolation.Caused by Staff Error & Procedural Inadequacy.All Licensed Operators to Receive Addl Training & Procedures Revised

05000285/LER-1994-001, :on 940211,safeguards Actuation & Reactor Trip Occurred Due to Relay Failure.Containment Pressure High Signal Relay Replaced & Sent for Investigation of Failure Mechanism
type: Subject
page: https://kanterella.com/05000285/LER-2D1994-2D001-2C_-3Aon_940211-2Csafeguards_Actuation_-26_Reactor_Trip_Occurred_Due_to_Relay_Failure.Containment_Pressure_High_Signal_Relay_Replaced_-26_Sent_for_Inve…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000285/LER-1994-001, :on 940211,safeguards Actuation & Reactor Trip Occurred Due to Relay Failure.Containment Pressure High Signal Relay Replaced & Sent for Investigation of Failure Mechanism

05000366/LER-2019-001, Emergency Diesel Generator Valid Actuation Signal Due to Inadvertent Electrical Bus De-Enerqization
type: Subject
page: https://kanterella.com/05000366/LER-2D2019-2D001-2C_Emergency_Diesel_Generator_Valid_Actuation_Signal_Due_to_Inadvertent_Electrical_Bus_De-2DEnerqization
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000366/LER-2019-001, Emergency Diesel Generator Valid Actuation Signal Due to Inadvertent Electrical Bus De-Enerqization

LER-1991-012-01, :on 910720,discovered That Pressurizer Level Channel Not Declared Inoperable,Per Acceptance Criteria Due to Personnel Error.Personnel Involved Reinstructed in Review of Recorded Data & Supervision of Trainees
type: Subject
label: 05000280/LER-1991-012-01, :on 910720,discovered That Pressurizer Level Channel Not Declared Inoperable,Per Acceptance Criteria Due to Personnel Error.Personnel Involved Reinstructed in Review of Recorded Data & Supervision of Trainees
page: https://kanterella.com/05000280/LER-2D1991-2D012-2D01-2C_-3Aon_910720-2Cdiscovered_That_Pressurizer_Level_Channel_Not_Declared_Inoperable-2CPer_Acceptance_Criteria_Due_to_Personnel_Error.Personnel_Inv…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1991-012-01, :on 910720,discovered That Pressurizer Level Channel Not Declared Inoperable,Per Acceptance Criteria Due to Personnel Error.Personnel Involved Reinstructed in Review of Recorded Data & Supervision of Trainees

LER-1992-003, :on 920214,determined That Certain ESF Sys Logic Acutation Relays Not Fully Tested Per Ts.Caused by Inadequate Testing Methodology.Surveillance Procedures for Channel Functional Test Changed
type: Subject
label: 05000280/LER-1992-003, :on 920214,determined That Certain ESF Sys Logic Acutation Relays Not Fully Tested Per Ts.Caused by Inadequate Testing Methodology.Surveillance Procedures for Channel Functional Test Changed
page: https://kanterella.com/05000280/LER-2D1992-2D003-2C_-3Aon_920214-2Cdetermined_That_Certain_ESF_Sys_Logic_Acutation_Relays_Not_Fully_Tested_Per_Ts.Caused_by_Inadequate_Testing_Methodology.Surveillance_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1992-003, :on 920214,determined That Certain ESF Sys Logic Acutation Relays Not Fully Tested Per Ts.Caused by Inadequate Testing Methodology.Surveillance Procedures for Channel Functional Test Changed

LER-1990-018, :on 901203,unplanned Initiation of ESF & SI Occurred During Performance of Operations Periodic Test. Caused by Inadequate Test Procedure.Personnel Preparing & Reviewing Test Procedures Will Be Cautioned
type: Subject
label: 05000280/LER-1990-018, :on 901203,unplanned Initiation of ESF & SI Occurred During Performance of Operations Periodic Test. Caused by Inadequate Test Procedure.Personnel Preparing & Reviewing Test Procedures Will Be Cautioned
page: https://kanterella.com/05000280/LER-2D1990-2D018-2C_-3Aon_901203-2Cunplanned_Initiation_of_ESF_-26_SI_Occurred_During_Performance_of_Operations_Periodic_Test._Caused_by_Inadequate_Test_Procedure.Perso…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1990-018, :on 901203,unplanned Initiation of ESF & SI Occurred During Performance of Operations Periodic Test. Caused by Inadequate Test Procedure.Personnel Preparing & Reviewing Test Procedures Will Be Cautioned

LER-1990-001-01, :on 900108,one of Three RCS Average Temp Channel Inputs to Reactor Protection Sys Not Declared Inoperable After Deviating from Other Two Channels.Caused by Faulty Summator.Summator Replaced
type: Subject
label: 05000281/LER-1990-001-01, :on 900108,one of Three RCS Average Temp Channel Inputs to Reactor Protection Sys Not Declared Inoperable After Deviating from Other Two Channels.Caused by Faulty Summator.Summator Replaced
page: https://kanterella.com/05000281/LER-2D1990-2D001-2D01-2C_-3Aon_900108-2Cone_of_Three_RCS_Average_Temp_Channel_Inputs_to_Reactor_Protection_Sys_Not_Declared_Inoperable_After_Deviating_from_Other_Two_Ch…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1990-001-01, :on 900108,one of Three RCS Average Temp Channel Inputs to Reactor Protection Sys Not Declared Inoperable After Deviating from Other Two Channels.Caused by Faulty Summator.Summator Replaced

LER-1989-038, :on 890903,emergency Diesel Generator 3 Started When Control Switch Was Placed from Exercise to Auto Position During Shutdown Attempt.Caused by hi-hi Consequence Limiting Safeguards Signal.Procedures Revised
type: Subject
label: 05000280/LER-1989-038, :on 890903,emergency Diesel Generator 3 Started When Control Switch Was Placed from Exercise to Auto Position During Shutdown Attempt.Caused by hi-hi Consequence Limiting Safeguards Signal.Procedures Revised
page: https://kanterella.com/05000280/LER-2D1989-2D038-2C_-3Aon_890903-2Cemergency_Diesel_Generator_3_Started_When_Control_Switch_Was_Placed_from_Exercise_to_Auto_Position_During_Shutdown_Attempt.Caused_by_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1989-038, :on 890903,emergency Diesel Generator 3 Started When Control Switch Was Placed from Exercise to Auto Position During Shutdown Attempt.Caused by hi-hi Consequence Limiting Safeguards Signal.Procedures Revised

LER-1989-011-02, :on 890919,found That Pipe Support Rigidly Attached to Auxiliary Bldg Structure & Facility Containment Which Violates Design Requirements.Caused by Design Error. Pipe Support Modified
type: Subject
label: 05000281/LER-1989-011-02, :on 890919,found That Pipe Support Rigidly Attached to Auxiliary Bldg Structure & Facility Containment Which Violates Design Requirements.Caused by Design Error. Pipe Support Modified
page: https://kanterella.com/05000281/LER-2D1989-2D011-2D02-2C_-3Aon_890919-2Cfound_That_Pipe_Support_Rigidly_Attached_to_Auxiliary_Bldg_Structure_-26_Facility_Containment_Which_Violates_Design_Requirements…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1989-011-02, :on 890919,found That Pipe Support Rigidly Attached to Auxiliary Bldg Structure & Facility Containment Which Violates Design Requirements.Caused by Design Error. Pipe Support Modified

LER-1988-002, :on 880202,determined That Individual Valve Leakage Through Reactor Coolant Cold Leg Sample Isolation Valves Was Greater than ASME Section XI Spec.Caused by Impurities in Sys.Valves Replaced
type: Subject
label: 05000281/LER-1988-002, :on 880202,determined That Individual Valve Leakage Through Reactor Coolant Cold Leg Sample Isolation Valves Was Greater than ASME Section XI Spec.Caused by Impurities in Sys.Valves Replaced
page: https://kanterella.com/05000281/LER-2D1988-2D002-2C_-3Aon_880202-2Cdetermined_That_Individual_Valve_Leakage_Through_Reactor_Coolant_Cold_Leg_Sample_Isolation_Valves_Was_Greater_than_ASME_Section_XI_Sp…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1988-002, :on 880202,determined That Individual Valve Leakage Through Reactor Coolant Cold Leg Sample Isolation Valves Was Greater than ASME Section XI Spec.Caused by Impurities in Sys.Valves Replaced

App R Commitments Since Min Cable Separation Did Not Meet Reg Guide 1.75 Requirements.Caused by Improper Installation & Reinstallation
type: Subject
label: 05000280/LER-1989-004, :on 890215,determined That Cable Tray Covers Did Not Comply W/App R Commitments Since Min Cable Separation Did Not Meet Reg Guide 1.75 Requirements.Caused by Improper Installation & Reinstallation
page: https://kanterella.com/05000280/LER-2D1989-2D004-2C_-3Aon_890215-2Cdetermined_That_Cable_Tray_Covers_Did_Not_Comply_W/App_R_Commitments_Since_Min_Cable_Separation_Did_Not_Meet_Reg_Guide_1.75_Requireme…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1989-004, :on 890215,determined That Cable Tray Covers Did Not Comply W/App R Commitments Since Min Cable Separation Did Not Meet Reg Guide 1.75 Requirements.Caused by Improper Installation & Reinstallation

LER-1989-007, :on 890302,planned ESF Actuation Resulted in Lockout of Ventilation Vent Radiation Monitor Sample Pump & Alternate Sampling Not Initiated.Caused by Personnel Error. Auxiliary Ventilation Emergency Mode Reset
type: Subject
label: 05000280/LER-1989-007, :on 890302,planned ESF Actuation Resulted in Lockout of Ventilation Vent Radiation Monitor Sample Pump & Alternate Sampling Not Initiated.Caused by Personnel Error. Auxiliary Ventilation Emergency Mode Reset
page: https://kanterella.com/05000280/LER-2D1989-2D007-2C_-3Aon_890302-2Cplanned_ESF_Actuation_Resulted_in_Lockout_of_Ventilation_Vent_Radiation_Monitor_Sample_Pump_-26_Alternate_Sampling_Not_Initiated.Caus…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1989-007, :on 890302,planned ESF Actuation Resulted in Lockout of Ventilation Vent Radiation Monitor Sample Pump & Alternate Sampling Not Initiated.Caused by Personnel Error. Auxiliary Ventilation Emergency Mode Reset

LER-1988-020-01, :on 880909,individual Rod Position Indicators for Four Control Rods of Control Bank D Differed from Demand Counter by More than 12 Steps.Caused by Indicator Indication Drift.Indicators Adjusted
type: Subject
label: 05000281/LER-1988-020-01, :on 880909,individual Rod Position Indicators for Four Control Rods of Control Bank D Differed from Demand Counter by More than 12 Steps.Caused by Indicator Indication Drift.Indicators Adjusted
page: https://kanterella.com/05000281/LER-2D1988-2D020-2D01-2C_-3Aon_880909-2Cindividual_Rod_Position_Indicators_for_Four_Control_Rods_of_Control_Bank_D_Differed_from_Demand_Counter_by_More_than_12_Steps.Ca…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1988-020-01, :on 880909,individual Rod Position Indicators for Four Control Rods of Control Bank D Differed from Demand Counter by More than 12 Steps.Caused by Indicator Indication Drift.Indicators Adjusted

LER-1988-034, :on 881203 & 14,main Control Room C & Emergency Switchgear Room Chiller Tripped.Caused by Insufficient Water Flow to Chiller C & Lack of Calibr on Chiller Condenser Pressure Control Valves.Valves Adjusted
type: Subject
label: 05000280/LER-1988-034, :on 881203 & 14,main Control Room C & Emergency Switchgear Room Chiller Tripped.Caused by Insufficient Water Flow to Chiller C & Lack of Calibr on Chiller Condenser Pressure Control Valves.Valves Adjusted
page: https://kanterella.com/05000280/LER-2D1988-2D034-2C_-3Aon_881203_-26_14-2Cmain_Control_Room_C_-26_Emergency_Switchgear_Room_Chiller_Tripped.Caused_by_Insufficient_Water_Flow_to_Chiller_C_-26_Lack_of_C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1988-034, :on 881203 & 14,main Control Room C & Emergency Switchgear Room Chiller Tripped.Caused by Insufficient Water Flow to Chiller C & Lack of Calibr on Chiller Condenser Pressure Control Valves.Valves Adjusted

05000280/LER-1988-021, :on 880728,PORV Cycled Open & Then Closed. Caused by Overly Conservative Setpoint.Setpoint Changed
type: Subject
page: https://kanterella.com/05000280/LER-2D1988-2D021-2C_-3Aon_880728-2CPORV_Cycled_Open_-26_Then_Closed._Caused_by_Overly_Conservative_Setpoint.Setpoint_Changed
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1988-021, :on 880728,PORV Cycled Open & Then Closed. Caused by Overly Conservative Setpoint.Setpoint Changed

LER-1988-025-02, :on 881208,determined That Power Supplies for Two Safety Injection Valve Operators Reversed.Caused by Error During Initial Plant Const.Engineering Work Request Issued to Correct as-found Conditions
type: Subject
label: 05000281/LER-1988-025-02, :on 881208,determined That Power Supplies for Two Safety Injection Valve Operators Reversed.Caused by Error During Initial Plant Const.Engineering Work Request Issued to Correct as-found Conditions
page: https://kanterella.com/05000281/LER-2D1988-2D025-2D02-2C_-3Aon_881208-2Cdetermined_That_Power_Supplies_for_Two_Safety_Injection_Valve_Operators_Reversed.Caused_by_Error_During_Initial_Plant_Const.Engi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1988-025-02, :on 881208,determined That Power Supplies for Two Safety Injection Valve Operators Reversed.Caused by Error During Initial Plant Const.Engineering Work Request Issued to Correct as-found Conditions

LER-1995-003, :on 950224, as Found Calibration Test Data for Three RPS Transmitters Not within Allowable Tolerance. Caused by Faulty Pressure Gauge Used in Calibration.Pressure Gauge Replaced & Repeated Calibration Check
type: Subject
label: 05000281/LER-1995-003, :on 950224, as Found Calibration Test Data for Three RPS Transmitters Not within Allowable Tolerance. Caused by Faulty Pressure Gauge Used in Calibration.Pressure Gauge Replaced & Repeated Calibration Check
page: https://kanterella.com/05000281/LER-2D1995-2D003-2C_-3Aon_950224-2C_as_Found_Calibration_Test_Data_for_Three_RPS_Transmitters_Not_within_Allowable_Tolerance._Caused_by_Faulty_Pressure_Gauge_Used_in_Ca…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1995-003, :on 950224, as Found Calibration Test Data for Three RPS Transmitters Not within Allowable Tolerance. Caused by Faulty Pressure Gauge Used in Calibration.Pressure Gauge Replaced & Repeated Calibration Check

LER-1989-005, :on 890204,auto Start of Emergency Diesel Generators 1 & 3 Occurred Upon Loss of Transfer Bus F.Caused by 4,160-volt Supply Circuit Breaker Failure.Circuit Breaker Cleaned & Tested Satisfactory
type: Subject
label: 05000280/LER-1989-005, :on 890204,auto Start of Emergency Diesel Generators 1 & 3 Occurred Upon Loss of Transfer Bus F.Caused by 4,160-volt Supply Circuit Breaker Failure.Circuit Breaker Cleaned & Tested Satisfactory
page: https://kanterella.com/05000280/LER-2D1989-2D005-2C_-3Aon_890204-2Cauto_Start_of_Emergency_Diesel_Generators_1_-26_3_Occurred_Upon_Loss_of_Transfer_Bus_F.Caused_by_4-2C160-2Dvolt_Supply_Circuit_Breake…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1989-005, :on 890204,auto Start of Emergency Diesel Generators 1 & 3 Occurred Upon Loss of Transfer Bus F.Caused by 4,160-volt Supply Circuit Breaker Failure.Circuit Breaker Cleaned & Tested Satisfactory

05000280/LER-1995-008, :on 950919,pressurizer Safety Valve Found Setpoint Out of Tolerance.Caused by Psvs Being Installed Prior to Start of Most Recent Operating Cycle
type: Subject
page: https://kanterella.com/05000280/LER-2D1995-2D008-2C_-3Aon_950919-2Cpressurizer_Safety_Valve_Found_Setpoint_Out_of_Tolerance.Caused_by_Psvs_Being_Installed_Prior_to_Start_of_Most_Recent_Operating_Cycle
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1995-008, :on 950919,pressurizer Safety Valve Found Setpoint Out of Tolerance.Caused by Psvs Being Installed Prior to Start of Most Recent Operating Cycle

05000280/LER-1996-001, :on 951213,ESW Pump Was Inoperable Due to Loss of Missile Protection for Piping.Revised DCP 91-025
type: Subject
page: https://kanterella.com/05000280/LER-2D1996-2D001-2C_-3Aon_951213-2CESW_Pump_Was_Inoperable_Due_to_Loss_of_Missile_Protection_for_Piping.Revised_DCP_91-2D025
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1996-001, :on 951213,ESW Pump Was Inoperable Due to Loss of Missile Protection for Piping.Revised DCP 91-025

LER-1988-022-01, :on 880910,reactor Trip by Turbine Trip Occurred While Attempting to Maintain Turbine at Synchronous Speed.Caused by Inadequate Procedure & Faulty Valve Position Indication.Testing to Be Performed
type: Subject
label: 05000281/LER-1988-022-01, :on 880910,reactor Trip by Turbine Trip Occurred While Attempting to Maintain Turbine at Synchronous Speed.Caused by Inadequate Procedure & Faulty Valve Position Indication.Testing to Be Performed
page: https://kanterella.com/05000281/LER-2D1988-2D022-2D01-2C_-3Aon_880910-2Creactor_Trip_by_Turbine_Trip_Occurred_While_Attempting_to_Maintain_Turbine_at_Synchronous_Speed.Caused_by_Inadequate_Procedure_-…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1988-022-01, :on 880910,reactor Trip by Turbine Trip Occurred While Attempting to Maintain Turbine at Synchronous Speed.Caused by Inadequate Procedure & Faulty Valve Position Indication.Testing to Be Performed

LER-1988-017-02, :on 880730,failure of Recirculation Spray Svc Water MOVs Due to Premature Actuation of Torque Switch. Both Valves Declared Inoperable & Tech Spec 3.0.1 Entered on Basis That Both Subsystems Were Inoperable
type: Subject
label: 05000281/LER-1988-017-02, :on 880730,failure of Recirculation Spray Svc Water MOVs Due to Premature Actuation of Torque Switch. Both Valves Declared Inoperable & Tech Spec 3.0.1 Entered on Basis That Both Subsystems Were Inoperable
page: https://kanterella.com/05000281/LER-2D1988-2D017-2D02-2C_-3Aon_880730-2Cfailure_of_Recirculation_Spray_Svc_Water_MOVs_Due_to_Premature_Actuation_of_Torque_Switch._Both_Valves_Declared_Inoperable_-26_T…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1988-017-02, :on 880730,failure of Recirculation Spray Svc Water MOVs Due to Premature Actuation of Torque Switch. Both Valves Declared Inoperable & Tech Spec 3.0.1 Entered on Basis That Both Subsystems Were Inoperable

LER-1988-011-01, :on 880415,power-operated Relief Valves Failed to Manually Open When Selector Switches Placed in Open Position.Cause Under Investigation.Selector Switches,Air Supply & Valves Examined for Malfunctions
type: Subject
label: 05000280/LER-1988-011-01, :on 880415,power-operated Relief Valves Failed to Manually Open When Selector Switches Placed in Open Position.Cause Under Investigation.Selector Switches,Air Supply & Valves Examined for Malfunctions
page: https://kanterella.com/05000280/LER-2D1988-2D011-2D01-2C_-3Aon_880415-2Cpower-2Doperated_Relief_Valves_Failed_to_Manually_Open_When_Selector_Switches_Placed_in_Open_Position.Cause_Under_Investigation.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1988-011-01, :on 880415,power-operated Relief Valves Failed to Manually Open When Selector Switches Placed in Open Position.Cause Under Investigation.Selector Switches,Air Supply & Valves Examined for Malfunctions

LER-1988-012-01, :on 880418,Tech Spec 1.0.H.5 Violated.Caused by Discovery of Valve 1-RS-11 Held in Open Position by Counter Weight Due to Personnel Error.Valves Inspected & Verified to Be in Closed Position & 1-RS-11 Disassembled
type: Subject
label: 05000280/LER-1988-012-01, :on 880418,Tech Spec 1.0.H.5 Violated.Caused by Discovery of Valve 1-RS-11 Held in Open Position by Counter Weight Due to Personnel Error.Valves Inspected & Verified to Be in Closed Position & 1-RS-11 Disassembled
page: https://kanterella.com/05000280/LER-2D1988-2D012-2D01-2C_-3Aon_880418-2CTech_Spec_1.0.H.5_Violated.Caused_by_Discovery_of_Valve_1-2DRS-2D11_Held_in_Open_Position_by_Counter_Weight_Due_to_Personnel_Err…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1988-012-01, :on 880418,Tech Spec 1.0.H.5 Violated.Caused by Discovery of Valve 1-RS-11 Held in Open Position by Counter Weight Due to Personnel Error.Valves Inspected & Verified to Be in Closed Position & 1-RS-11 Disassembled

Divider Unit Power Supply Transformer.Technicians Called in & Placed Channels in Trip Mode
type: Subject
label: 05000280/LER-1988-023, :on 880802,C Steam Generator Channel IV Steam Flow Failed to Low Flow Indication.Caused by Failed Multiplier/Divider Unit Power Supply Transformer.Technicians Called in & Placed Channels in Trip Mode
page: https://kanterella.com/05000280/LER-2D1988-2D023-2C_-3Aon_880802-2CC_Steam_Generator_Channel_IV_Steam_Flow_Failed_to_Low_Flow_Indication.Caused_by_Failed_Multiplier/Divider_Unit_Power_Supply_Transform…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1988-023, :on 880802,C Steam Generator Channel IV Steam Flow Failed to Low Flow Indication.Caused by Failed Multiplier/Divider Unit Power Supply Transformer.Technicians Called in & Placed Channels in Trip Mode

LER-1988-006-01, :on 880219,individual Rod Position Indicators Differed from Rod Group Demand Counter by Greater than 12 Steps.Caused by Generic Westinghouse PWR Concern.Rods Calibr to Give Correct Indication & Returned to Svc
type: Subject
label: 05000280/LER-1988-006-01, :on 880219,individual Rod Position Indicators Differed from Rod Group Demand Counter by Greater than 12 Steps.Caused by Generic Westinghouse PWR Concern.Rods Calibr to Give Correct Indication & Returned to Svc
page: https://kanterella.com/05000280/LER-2D1988-2D006-2D01-2C_-3Aon_880219-2Cindividual_Rod_Position_Indicators_Differed_from_Rod_Group_Demand_Counter_by_Greater_than_12_Steps.Caused_by_Generic_Westinghous…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1988-006-01, :on 880219,individual Rod Position Indicators Differed from Rod Group Demand Counter by Greater than 12 Steps.Caused by Generic Westinghouse PWR Concern.Rods Calibr to Give Correct Indication & Returned to Svc

Stop Chillers.Addl Procedure Will Be Developed
type: Subject
label: 05000280/LER-1988-025, :on 880815,control/relay Room Chillers Inoperable.Caused by Inadequate Svc Water Flow to Chiller Condensers as Result of Method to Start/Stop Chillers.Addl Procedure Will Be Developed
page: https://kanterella.com/05000280/LER-2D1988-2D025-2C_-3Aon_880815-2Ccontrol/relay_Room_Chillers_Inoperable.Caused_by_Inadequate_Svc_Water_Flow_to_Chiller_Condensers_as_Result_of_Method_to_Start/Stop_Ch…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1988-025, :on 880815,control/relay Room Chillers Inoperable.Caused by Inadequate Svc Water Flow to Chiller Condensers as Result of Method to Start/Stop Chillers.Addl Procedure Will Be Developed

LER-1987-028, :on 871021,reported That Emergency Diesel Generators Output Breaker Protection Circuits Contained Instantaneous Overcurrent Tripping Relays.Caused by Design Deficiency.Trip Relay Settings Increased
type: Subject
label: 05000280/LER-1987-028, :on 871021,reported That Emergency Diesel Generators Output Breaker Protection Circuits Contained Instantaneous Overcurrent Tripping Relays.Caused by Design Deficiency.Trip Relay Settings Increased
page: https://kanterella.com/05000280/LER-2D1987-2D028-2C_-3Aon_871021-2Creported_That_Emergency_Diesel_Generators_Output_Breaker_Protection_Circuits_Contained_Instantaneous_Overcurrent_Tripping_Relays.Caus…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1987-028, :on 871021,reported That Emergency Diesel Generators Output Breaker Protection Circuits Contained Instantaneous Overcurrent Tripping Relays.Caused by Design Deficiency.Trip Relay Settings Increased

LER-1988-004, :on 880327,turbine Runback Automatically Initiated Due to Loss of Power to Power Range Nuclear Instrument NI-43.Caused by Internal Conductor Failure Due to Age.Vital Bus Inverters Replaced
type: Subject
label: 05000281/LER-1988-004, :on 880327,turbine Runback Automatically Initiated Due to Loss of Power to Power Range Nuclear Instrument NI-43.Caused by Internal Conductor Failure Due to Age.Vital Bus Inverters Replaced
page: https://kanterella.com/05000281/LER-2D1988-2D004-2C_-3Aon_880327-2Cturbine_Runback_Automatically_Initiated_Due_to_Loss_of_Power_to_Power_Range_Nuclear_Instrument_NI-2D43.Caused_by_Internal_Conductor_F…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000281/LER-1988-004, :on 880327,turbine Runback Automatically Initiated Due to Loss of Power to Power Range Nuclear Instrument NI-43.Caused by Internal Conductor Failure Due to Age.Vital Bus Inverters Replaced

LER-1987-024, :on 870920,RCS Flow Reactor Trip Occurred When Reactor Coolant Pump B Tripped.Caused by Complete Separation of Phase Main Load Connection Bus Bar A.Failed Bus Bar Replaced & Other Bus Bars Inspected
type: Subject
label: 05000280/LER-1987-024, :on 870920,RCS Flow Reactor Trip Occurred When Reactor Coolant Pump B Tripped.Caused by Complete Separation of Phase Main Load Connection Bus Bar A.Failed Bus Bar Replaced & Other Bus Bars Inspected
page: https://kanterella.com/05000280/LER-2D1987-2D024-2C_-3Aon_870920-2CRCS_Flow_Reactor_Trip_Occurred_When_Reactor_Coolant_Pump_B_Tripped.Caused_by_Complete_Separation_of_Phase_Main_Load_Connection_Bus_Ba…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1987-024, :on 870920,RCS Flow Reactor Trip Occurred When Reactor Coolant Pump B Tripped.Caused by Complete Separation of Phase Main Load Connection Bus Bar A.Failed Bus Bar Replaced & Other Bus Bars Inspected

LER-1987-012-01, :on 870607,recirculation Spray Pump Declared Inoperable Due to High Vibrations.Caused by Threaded Nut & Bolt Detached & Located in Impeller Region of Pump.Loose Nut & Bolt Removed & Pump Realigned
type: Subject
label: 05000280/LER-1987-012-01, :on 870607,recirculation Spray Pump Declared Inoperable Due to High Vibrations.Caused by Threaded Nut & Bolt Detached & Located in Impeller Region of Pump.Loose Nut & Bolt Removed & Pump Realigned
page: https://kanterella.com/05000280/LER-2D1987-2D012-2D01-2C_-3Aon_870607-2Crecirculation_Spray_Pump_Declared_Inoperable_Due_to_High_Vibrations.Caused_by_Threaded_Nut_-26_Bolt_Detached_-26_Located_in_Impe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1987-012-01, :on 870607,recirculation Spray Pump Declared Inoperable Due to High Vibrations.Caused by Threaded Nut & Bolt Detached & Located in Impeller Region of Pump.Loose Nut & Bolt Removed & Pump Realigned

LER-1987-013-01, :on 870623,unit Shutdown Commenced Due to High RCS Leak Rate.Caused by Failed Packing on Loop Stop Valve MOV-1593.Loop Stop Valves Repacked & Diaphragm on Drain Header Isolation Valve Replaced
type: Subject
label: 05000280/LER-1987-013-01, :on 870623,unit Shutdown Commenced Due to High RCS Leak Rate.Caused by Failed Packing on Loop Stop Valve MOV-1593.Loop Stop Valves Repacked & Diaphragm on Drain Header Isolation Valve Replaced
page: https://kanterella.com/05000280/LER-2D1987-2D013-2D01-2C_-3Aon_870623-2Cunit_Shutdown_Commenced_Due_to_High_RCS_Leak_Rate.Caused_by_Failed_Packing_on_Loop_Stop_Valve_MOV-2D1593.Loop_Stop_Valves_Repack…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000280/LER-1987-013-01, :on 870623,unit Shutdown Commenced Due to High RCS Leak Rate.Caused by Failed Packing on Loop Stop Valve MOV-1593.Loop Stop Valves Repacked & Diaphragm on Drain Header Isolation Valve Replaced

05000272/LER-1996-036, :on 961106,28 Volt Dc Battery Capacity Was Exceeded.Caused by Inattention to Detail.Replaced Lamps Installed in CR Console push-button Stations
type: Subject
page: https://kanterella.com/05000272/LER-2D1996-2D036-2C_-3Aon_961106-2C28_Volt_Dc_Battery_Capacity_Was_Exceeded.Caused_by_Inattention_to_Detail.Replaced_Lamps_Installed_in_CR_Console_push-2Dbutton_Station…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1996-036, :on 961106,28 Volt Dc Battery Capacity Was Exceeded.Caused by Inattention to Detail.Replaced Lamps Installed in CR Console push-button Stations

05000272/LER-1997-001-02, :on 970117,discovered Inadequate IST Surveillance of B Injection Inlet Valves.Caused by Inadequate Communication Between EOP & Ist.Reviewed Salem EOPs for Similar Problems
type: Subject
page: https://kanterella.com/05000272/LER-2D1997-2D001-2D02-2C_-3Aon_970117-2Cdiscovered_Inadequate_IST_Surveillance_of_B_Injection_Inlet_Valves.Caused_by_Inadequate_Communication_Between_EOP_-26_Ist.Review…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1997-001-02, :on 970117,discovered Inadequate IST Surveillance of B Injection Inlet Valves.Caused by Inadequate Communication Between EOP & Ist.Reviewed Salem EOPs for Similar Problems

LER-1996-015-02, :on 961219,breach of Containment Closure During Core Reload Occurred.Caused by Inadequate Inplementation of Outage Scheduling & Risk Management Requirements.Containment Closure Was Reestablished Using Alternate Isolation Poi
type: Subject
label: 05000311/LER-1996-015-02, :on 961219,breach of Containment Closure During Core Reload Occurred.Caused by Inadequate Inplementation of Outage Scheduling & Risk Management Requirements.Containment Closure Was Reestablished Using Alternate Isolation Poi
page: https://kanterella.com/05000311/LER-2D1996-2D015-2D02-2C_-3Aon_961219-2Cbreach_of_Containment_Closure_During_Core_Reload_Occurred.Caused_by_Inadequate_Inplementation_of_Outage_Scheduling_-26_Risk_Mana…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000311/LER-1996-015-02, :on 961219,breach of Containment Closure During Core Reload Occurred.Caused by Inadequate Inplementation of Outage Scheduling & Risk Management Requirements.Containment Closure Was Reestablished Using Alternate Isolation Poi

05000272/LER-1996-040, :on 961223,buffer Relays Omitted from TS Required Response Time Surveillance Tests.Caused by Inadequate Implementation of TS Requirements.Revised Response Procedures
type: Subject
page: https://kanterella.com/05000272/LER-2D1996-2D040-2C_-3Aon_961223-2Cbuffer_Relays_Omitted_from_TS_Required_Response_Time_Surveillance_Tests.Caused_by_Inadequate_Implementation_of_TS_Requirements.Revise…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1996-040, :on 961223,buffer Relays Omitted from TS Required Response Time Surveillance Tests.Caused by Inadequate Implementation of TS Requirements.Revised Response Procedures

LER-1996-041, :on 961228,surveillance for Radiation Monitors Source Check Required by TS Was Missed.Caused by Lack of Attention to Detail.Reemphasized Mgt Expectations Concerning Surveillance Test Accountability
type: Subject
label: 05000272/LER-1996-041, :on 961228,surveillance for Radiation Monitors Source Check Required by TS Was Missed.Caused by Lack of Attention to Detail.Reemphasized Mgt Expectations Concerning Surveillance Test Accountability
page: https://kanterella.com/05000272/LER-2D1996-2D041-2C_-3Aon_961228-2Csurveillance_for_Radiation_Monitors_Source_Check_Required_by_TS_Was_Missed.Caused_by_Lack_of_Attention_to_Detail.Reemphasized_Mgt_Exp…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1996-041, :on 961228,surveillance for Radiation Monitors Source Check Required by TS Was Missed.Caused by Lack of Attention to Detail.Reemphasized Mgt Expectations Concerning Surveillance Test Accountability

LER-1996-011-02, :on 960620,pressurizer Safety Relief Valves Were Found Outside of TS Tolerance.Caused by Minor Testing Instrument Error.Valves Were Refurbished & Successfully Retested to within TS Tolerance
type: Subject
label: 05000272/LER-1996-011-02, :on 960620,pressurizer Safety Relief Valves Were Found Outside of TS Tolerance.Caused by Minor Testing Instrument Error.Valves Were Refurbished & Successfully Retested to within TS Tolerance
page: https://kanterella.com/05000272/LER-2D1996-2D011-2D02-2C_-3Aon_960620-2Cpressurizer_Safety_Relief_Valves_Were_Found_Outside_of_TS_Tolerance.Caused_by_Minor_Testing_Instrument_Error.Valves_Were_Refurbi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1996-011-02, :on 960620,pressurizer Safety Relief Valves Were Found Outside of TS Tolerance.Caused by Minor Testing Instrument Error.Valves Were Refurbished & Successfully Retested to within TS Tolerance

LER-1996-010-02, :on 960819,TS 4.0.5 Surveillance for Two Pressurizer Welds Was Missed Due to Insufficient Verification & Validation of Entry of Data Into Database. Exam of Pressurizer Spray Nozzle Was Completed
type: Subject
label: 05000311/LER-1996-010-02, :on 960819,TS 4.0.5 Surveillance for Two Pressurizer Welds Was Missed Due to Insufficient Verification & Validation of Entry of Data Into Database. Exam of Pressurizer Spray Nozzle Was Completed
page: https://kanterella.com/05000311/LER-2D1996-2D010-2D02-2C_-3Aon_960819-2CTS_4.0.5_Surveillance_for_Two_Pressurizer_Welds_Was_Missed_Due_to_Insufficient_Verification_-26_Validation_of_Entry_of_Data_Into…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000311/LER-1996-010-02, :on 960819,TS 4.0.5 Surveillance for Two Pressurizer Welds Was Missed Due to Insufficient Verification & Validation of Entry of Data Into Database. Exam of Pressurizer Spray Nozzle Was Completed

05000272/LER-1996-017-01, :on 960725,surveillance Was Missed for Plant Vent.Caused by Personnel Error.Lco Compensatory Action Was Immediately Completed Upon Discovery of Missed TS Requirement
type: Subject
page: https://kanterella.com/05000272/LER-2D1996-2D017-2D01-2C_-3Aon_960725-2Csurveillance_Was_Missed_for_Plant_Vent.Caused_by_Personnel_Error.Lco_Compensatory_Action_Was_Immediately_Completed_Upon_Discover…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1996-017-01, :on 960725,surveillance Was Missed for Plant Vent.Caused by Personnel Error.Lco Compensatory Action Was Immediately Completed Upon Discovery of Missed TS Requirement

LER-1996-004-01, :on 960307,surveillance Was Missed for Salem Generating Station.Caused by Lack of Adequate Control for Development & Maintenance of TS Surveillance Procedures. License Change Will Be Submitted
type: Subject
label: 05000272/LER-1996-004-01, :on 960307,surveillance Was Missed for Salem Generating Station.Caused by Lack of Adequate Control for Development & Maintenance of TS Surveillance Procedures. License Change Will Be Submitted
page: https://kanterella.com/05000272/LER-2D1996-2D004-2D01-2C_-3Aon_960307-2Csurveillance_Was_Missed_for_Salem_Generating_Station.Caused_by_Lack_of_Adequate_Control_for_Development_-26_Maintenance_of_TS_Su…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1996-004-01, :on 960307,surveillance Was Missed for Salem Generating Station.Caused by Lack of Adequate Control for Development & Maintenance of TS Surveillance Procedures. License Change Will Be Submitted

LER-1996-018-01, :on 960719,potential Performance Impact on ECCS Identified Involving non-safety Related Refueling Water Storage Tank Piping.Caused by Design Discrepancy.Design Reviewed & Revised
type: Subject
label: 05000272/LER-1996-018-01, :on 960719,potential Performance Impact on ECCS Identified Involving non-safety Related Refueling Water Storage Tank Piping.Caused by Design Discrepancy.Design Reviewed & Revised
page: https://kanterella.com/05000272/LER-2D1996-2D018-2D01-2C_-3Aon_960719-2Cpotential_Performance_Impact_on_ECCS_Identified_Involving_non-2Dsafety_Related_Refueling_Water_Storage_Tank_Piping.Caused_by_Des…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1996-018-01, :on 960719,potential Performance Impact on ECCS Identified Involving non-safety Related Refueling Water Storage Tank Piping.Caused by Design Discrepancy.Design Reviewed & Revised

Ts Requirements.Caused by Inadequate Design Basis Info.Fuel Handling Bldg Changed
type: Subject
label: 05000272/LER-1995-024, :on 950911,determined Fuel Handling Bldg Low Differential Pressure Surveillance Testing Did Not Ensure Compliance W/Ts Requirements.Caused by Inadequate Design Basis Info.Fuel Handling Bldg Changed
page: https://kanterella.com/05000272/LER-2D1995-2D024-2C_-3Aon_950911-2Cdetermined_Fuel_Handling_Bldg_Low_Differential_Pressure_Surveillance_Testing_Did_Not_Ensure_Compliance_W/Ts_Requirements.Caused_by_In…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000272/LER-1995-024, :on 950911,determined Fuel Handling Bldg Low Differential Pressure Surveillance Testing Did Not Ensure Compliance W/Ts Requirements.Caused by Inadequate Design Basis Info.Fuel Handling Bldg Changed

05000255/LER-1994-012, :on 940427,determined That Internal Ground in Thermal Margin Monitor Causes Nonconformance W/Rps Design Basis.Incorporated RPS Failure Modes & Effects Analysis in Plant DBD
type: Subject
page: https://kanterella.com/05000255/LER-2D1994-2D012-2C_-3Aon_940427-2Cdetermined_That_Internal_Ground_in_Thermal_Margin_Monitor_Causes_Nonconformance_W/Rps_Design_Basis.Incorporated_RPS_Failure_Modes_-26…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-012, :on 940427,determined That Internal Ground in Thermal Margin Monitor Causes Nonconformance W/Rps Design Basis.Incorporated RPS Failure Modes & Effects Analysis in Plant DBD

Ts
type: Subject
label: 05000255/LER-1996-004, :on 960118,SIS Disabled W/Primary Coolant Sys Greater than 300 F.Caused by Personnel Error.Permanent Maint Procedure to Disable/Enable SIS Actuation on Low Pressurizer Pressure Will Be Revised to Align W/Ts
page: https://kanterella.com/05000255/LER-2D1996-2D004-2C_-3Aon_960118-2CSIS_Disabled_W/Primary_Coolant_Sys_Greater_than_300_F.Caused_by_Personnel_Error.Permanent_Maint_Procedure_to_Disable/Enable_SIS_Actua…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1996-004, :on 960118,SIS Disabled W/Primary Coolant Sys Greater than 300 F.Caused by Personnel Error.Permanent Maint Procedure to Disable/Enable SIS Actuation on Low Pressurizer Pressure Will Be Revised to Align W/Ts

Inline Butt Connections
type: Subject
label: 05000255/LER-1995-012, :on 950701,discovered Unqualified Electrical Connection in Containment SW Outlet Valve Controller.Caused by Failure of Assigned Engineers to Available Info.Replaced Wire Nuts W/Inline Butt Connections
page: https://kanterella.com/05000255/LER-2D1995-2D012-2C_-3Aon_950701-2Cdiscovered_Unqualified_Electrical_Connection_in_Containment_SW_Outlet_Valve_Controller.Caused_by_Failure_of_Assigned_Engineers_to_Ava…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-012, :on 950701,discovered Unqualified Electrical Connection in Containment SW Outlet Valve Controller.Caused by Failure of Assigned Engineers to Available Info.Replaced Wire Nuts W/Inline Butt Connections

in-line Design
type: Subject
label: 05000255/LER-1995-007, :on 950720,discovered That 12 Instrument Loops Had V-bolted Type Qualified Cable Splices Connected to Wires W/Exposed Kapton Insulation.Caused by Human Error.All V- Bolted Splices Replaced w/in-line Design
page: https://kanterella.com/05000255/LER-2D1995-2D007-2C_-3Aon_950720-2Cdiscovered_That_12_Instrument_Loops_Had_V-2Dbolted_Type_Qualified_Cable_Splices_Connected_to_Wires_W/Exposed_Kapton_Insulation.Caused…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-007, :on 950720,discovered That 12 Instrument Loops Had V-bolted Type Qualified Cable Splices Connected to Wires W/Exposed Kapton Insulation.Caused by Human Error.All V- Bolted Splices Replaced w/in-line Design

05000255/LER-1995-003-01, :on 950522,main FW Pump Transient Resulted in Rt.Evaluated MFP Governor Control Setpoint of 5250 RPM & Relationship to Overspeed Trip Setpoint
type: Subject
page: https://kanterella.com/05000255/LER-2D1995-2D003-2D01-2C_-3Aon_950522-2Cmain_FW_Pump_Transient_Resulted_in_Rt.Evaluated_MFP_Governor_Control_Setpoint_of_5250_RPM_-26_Relationship_to_Overspeed_Trip_Set…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-003-01, :on 950522,main FW Pump Transient Resulted in Rt.Evaluated MFP Governor Control Setpoint of 5250 RPM & Relationship to Overspeed Trip Setpoint

LER-1995-006, :on 950629,determined That AFW Pump Low Suction Pressure Trip Setpoints Inadequate Due to Failure of Design of Afws Suction Piping to Consider Suction Vortexing.Rev of Low Suction Pressure Trip Setpoints Made
type: Subject
label: 05000255/LER-1995-006, :on 950629,determined That AFW Pump Low Suction Pressure Trip Setpoints Inadequate Due to Failure of Design of Afws Suction Piping to Consider Suction Vortexing.Rev of Low Suction Pressure Trip Setpoints Made
page: https://kanterella.com/05000255/LER-2D1995-2D006-2C_-3Aon_950629-2Cdetermined_That_AFW_Pump_Low_Suction_Pressure_Trip_Setpoints_Inadequate_Due_to_Failure_of_Design_of_Afws_Suction_Piping_to_Consider_S…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-006, :on 950629,determined That AFW Pump Low Suction Pressure Trip Setpoints Inadequate Due to Failure of Design of Afws Suction Piping to Consider Suction Vortexing.Rev of Low Suction Pressure Trip Setpoints Made

LER-1995-001-01, :on 950302,left Channel DBA Sequencer Malfunctioned & Started Most of Left Channel Safeguards Equipment.Caused by Failure of DBA Sequencer micro-processor Module.Svc of Mfg of Sequencer Hardware Will Be Utilized
type: Subject
label: 05000255/LER-1995-001-01, :on 950302,left Channel DBA Sequencer Malfunctioned & Started Most of Left Channel Safeguards Equipment.Caused by Failure of DBA Sequencer micro-processor Module.Svc of Mfg of Sequencer Hardware Will Be Utilized
page: https://kanterella.com/05000255/LER-2D1995-2D001-2D01-2C_-3Aon_950302-2Cleft_Channel_DBA_Sequencer_Malfunctioned_-26_Started_Most_of_Left_Channel_Safeguards_Equipment.Caused_by_Failure_of_DBA_Sequence…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-001-01, :on 950302,left Channel DBA Sequencer Malfunctioned & Started Most of Left Channel Safeguards Equipment.Caused by Failure of DBA Sequencer micro-processor Module.Svc of Mfg of Sequencer Hardware Will Be Utilized

LER-1995-002-01, :on 950307,degraded Sealing Capability of Inner Door of Personnel Air Lock Discovered.Caused by Personnel Error.Need to Establish Teamwork & Anticipate Plan for Contingencies Discussed
type: Subject
label: 05000255/LER-1995-002-01, :on 950307,degraded Sealing Capability of Inner Door of Personnel Air Lock Discovered.Caused by Personnel Error.Need to Establish Teamwork & Anticipate Plan for Contingencies Discussed
page: https://kanterella.com/05000255/LER-2D1995-2D002-2D01-2C_-3Aon_950307-2Cdegraded_Sealing_Capability_of_Inner_Door_of_Personnel_Air_Lock_Discovered.Caused_by_Personnel_Error.Need_to_Establish_Teamwork_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-002-01, :on 950307,degraded Sealing Capability of Inner Door of Personnel Air Lock Discovered.Caused by Personnel Error.Need to Establish Teamwork & Anticipate Plan for Contingencies Discussed

LER-1993-007, :on 930817,dark Debris Cloud Observed in SFP Around Edges of Boraflex Surveillance Coupon.Caused by Flow Induced Deterioration of Full Length Coupons Due to Inadequate Holding Canister.Neutron Attenuation Tests Done
type: Subject
label: 05000255/LER-1993-007, :on 930817,dark Debris Cloud Observed in SFP Around Edges of Boraflex Surveillance Coupon.Caused by Flow Induced Deterioration of Full Length Coupons Due to Inadequate Holding Canister.Neutron Attenuation Tests Done
page: https://kanterella.com/05000255/LER-2D1993-2D007-2C_-3Aon_930817-2Cdark_Debris_Cloud_Observed_in_SFP_Around_Edges_of_Boraflex_Surveillance_Coupon.Caused_by_Flow_Induced_Deterioration_of_Full_Length_Co…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-007, :on 930817,dark Debris Cloud Observed in SFP Around Edges of Boraflex Surveillance Coupon.Caused by Flow Induced Deterioration of Full Length Coupons Due to Inadequate Holding Canister.Neutron Attenuation Tests Done

LER-1995-009, :on 950728,discovered Lack of Procedural Guidance for Pump Repair Following Fire.Proposed Use of Power Supply Breaker Did Not Adequately Address Effect of Loss of Control Power.Performed Independent Assessment
type: Subject
label: 05000255/LER-1995-009, :on 950728,discovered Lack of Procedural Guidance for Pump Repair Following Fire.Proposed Use of Power Supply Breaker Did Not Adequately Address Effect of Loss of Control Power.Performed Independent Assessment
page: https://kanterella.com/05000255/LER-2D1995-2D009-2C_-3Aon_950728-2Cdiscovered_Lack_of_Procedural_Guidance_for_Pump_Repair_Following_Fire.Proposed_Use_of_Power_Supply_Breaker_Did_Not_Adequately_Address…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1995-009, :on 950728,discovered Lack of Procedural Guidance for Pump Repair Following Fire.Proposed Use of Power Supply Breaker Did Not Adequately Address Effect of Loss of Control Power.Performed Independent Assessment

LER-1994-004, :on 940209,ESS Pump Cooling Failed. Caused by Failure to Recognize That Ess Pumps Dependent on Seal & Bearing Cooling.Revised Plant Operating Procedures So Normal Position for CV-0913 & CV-0950 Open
type: Subject
label: 05000255/LER-1994-004, :on 940209,ESS Pump Cooling Failed. Caused by Failure to Recognize That Ess Pumps Dependent on Seal & Bearing Cooling.Revised Plant Operating Procedures So Normal Position for CV-0913 & CV-0950 Open
page: https://kanterella.com/05000255/LER-2D1994-2D004-2C_-3Aon_940209-2CESS_Pump_Cooling_Failed._Caused_by_Failure_to_Recognize_That_Ess_Pumps_Dependent_on_Seal_-26_Bearing_Cooling.Revised_Plant_Operating_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-004, :on 940209,ESS Pump Cooling Failed. Caused by Failure to Recognize That Ess Pumps Dependent on Seal & Bearing Cooling.Revised Plant Operating Procedures So Normal Position for CV-0913 & CV-0950 Open

LER-1994-018, :on 941026,failure to Properly Implement TS 4.7.1.C,EDG Refueling Outage Insps Occurred.Caused by Failure to Maintain Adequate TS Basis Documents.Formal Evaluation of Recommended Insps Initiated
type: Subject
label: 05000255/LER-1994-018, :on 941026,failure to Properly Implement TS 4.7.1.C,EDG Refueling Outage Insps Occurred.Caused by Failure to Maintain Adequate TS Basis Documents.Formal Evaluation of Recommended Insps Initiated
page: https://kanterella.com/05000255/LER-2D1994-2D018-2C_-3Aon_941026-2Cfailure_to_Properly_Implement_TS_4.7.1.C-2CEDG_Refueling_Outage_Insps_Occurred.Caused_by_Failure_to_Maintain_Adequate_TS_Basis_Docume…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-018, :on 941026,failure to Properly Implement TS 4.7.1.C,EDG Refueling Outage Insps Occurred.Caused by Failure to Maintain Adequate TS Basis Documents.Formal Evaluation of Recommended Insps Initiated

LER-1994-003, :on 940203,position Switches for Containment Air Cooler Svc Inlet & Valves Not Qualified for Submergence. Caused by Master Equipment List Which Did Not Alert User of Existence of Qualification Restrictions
type: Subject
label: 05000225/LER-1994-003, :on 940203,position Switches for Containment Air Cooler Svc Inlet & Valves Not Qualified for Submergence. Caused by Master Equipment List Which Did Not Alert User of Existence of Qualification Restrictions
page: https://kanterella.com/05000225/LER-2D1994-2D003-2C_-3Aon_940203-2Cposition_Switches_for_Containment_Air_Cooler_Svc_Inlet_-26_Valves_Not_Qualified_for_Submergence._Caused_by_Master_Equipment_List_Whic…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000225/LER-1994-003, :on 940203,position Switches for Containment Air Cooler Svc Inlet & Valves Not Qualified for Submergence. Caused by Master Equipment List Which Did Not Alert User of Existence of Qualification Restrictions

LER-1994-003-01, :on 940209,discovered That Single Active Failure Could Disable Seal Cooling to Ess Pumps & Backup Cooling Supply Not Fully Qualified.Affected Valves Opened to Eliminate Possibility of Single Failure
type: Subject
label: 05000255/LER-1994-003-01, :on 940209,discovered That Single Active Failure Could Disable Seal Cooling to Ess Pumps & Backup Cooling Supply Not Fully Qualified.Affected Valves Opened to Eliminate Possibility of Single Failure
page: https://kanterella.com/05000255/LER-2D1994-2D003-2D01-2C_-3Aon_940209-2Cdiscovered_That_Single_Active_Failure_Could_Disable_Seal_Cooling_to_Ess_Pumps_-26_Backup_Cooling_Supply_Not_Fully_Qualified.Affe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-003-01, :on 940209,discovered That Single Active Failure Could Disable Seal Cooling to Ess Pumps & Backup Cooling Supply Not Fully Qualified.Affected Valves Opened to Eliminate Possibility of Single Failure

LER-1992-031, :on 920402,left Channel DBA Sequencer Inadvertently Activated by Technician Preparing to Test Left Normal Shutdown Sequencer Due to Inadequate Test Procedures. Procedures RT-13A & B & RT-8C & D Revised
type: Subject
label: 05000255/LER-1992-031, :on 920402,left Channel DBA Sequencer Inadvertently Activated by Technician Preparing to Test Left Normal Shutdown Sequencer Due to Inadequate Test Procedures. Procedures RT-13A & B & RT-8C & D Revised
page: https://kanterella.com/05000255/LER-2D1992-2D031-2C_-3Aon_920402-2Cleft_Channel_DBA_Sequencer_Inadvertently_Activated_by_Technician_Preparing_to_Test_Left_Normal_Shutdown_Sequencer_Due_to_Inadequate_T…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-031, :on 920402,left Channel DBA Sequencer Inadvertently Activated by Technician Preparing to Test Left Normal Shutdown Sequencer Due to Inadequate Test Procedures. Procedures RT-13A & B & RT-8C & D Revised

LER-1993-005, :on 930720,discovered Both Emregency Diesel Generators Started After Receiving Undervoltage Signal Due to de-energization of Electrical Bus 1C.Caused by Lack of Vendor Information.Procedures Revised
type: Subject
label: 05000255/LER-1993-005, :on 930720,discovered Both Emregency Diesel Generators Started After Receiving Undervoltage Signal Due to de-energization of Electrical Bus 1C.Caused by Lack of Vendor Information.Procedures Revised
page: https://kanterella.com/05000255/LER-2D1993-2D005-2C_-3Aon_930720-2Cdiscovered_Both_Emregency_Diesel_Generators_Started_After_Receiving_Undervoltage_Signal_Due_to_de-2Denergization_of_Electrical_Bus_1C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-005, :on 930720,discovered Both Emregency Diesel Generators Started After Receiving Undervoltage Signal Due to de-energization of Electrical Bus 1C.Caused by Lack of Vendor Information.Procedures Revised

05000255/LER-1994-001, :on 940121,both Trains of Control Room Emergency Heating,Ventilation & Air Conditioning Inoperable. Caused by Screen Plugged W/Ice & Snow.Surveillance Procedure Revised
type: Subject
page: https://kanterella.com/05000255/LER-2D1994-2D001-2C_-3Aon_940121-2Cboth_Trains_of_Control_Room_Emergency_Heating-2CVentilation_-26_Air_Conditioning_Inoperable._Caused_by_Screen_Plugged_W/Ice_-26_Snow.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-001, :on 940121,both Trains of Control Room Emergency Heating,Ventilation & Air Conditioning Inoperable. Caused by Screen Plugged W/Ice & Snow.Surveillance Procedure Revised

LER-1993-007-01, :on 930817,degradation of Boraflex Neutron Absorber in Surveillance Coupons Observed.Cause of Event Unknown.Temporary Requirement for Daily Sampling & Analysis of SFP Boron Discontinued
type: Subject
label: 05000255/LER-1993-007-01, :on 930817,degradation of Boraflex Neutron Absorber in Surveillance Coupons Observed.Cause of Event Unknown.Temporary Requirement for Daily Sampling & Analysis of SFP Boron Discontinued
page: https://kanterella.com/05000255/LER-2D1993-2D007-2D01-2C_-3Aon_930817-2Cdegradation_of_Boraflex_Neutron_Absorber_in_Surveillance_Coupons_Observed.Cause_of_Event_Unknown.Temporary_Requirement_for_Daily…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-007-01, :on 930817,degradation of Boraflex Neutron Absorber in Surveillance Coupons Observed.Cause of Event Unknown.Temporary Requirement for Daily Sampling & Analysis of SFP Boron Discontinued

LER-1993-012, :on 931103,concluded That Seismic Qualification Did Not Exist for Relays Previously Installed in Chp & Chr Circuits Due to Undersized Relay Coils.Undersized Coils in Relays Replaced
type: Subject
label: 05000255/LER-1993-012, :on 931103,concluded That Seismic Qualification Did Not Exist for Relays Previously Installed in Chp & Chr Circuits Due to Undersized Relay Coils.Undersized Coils in Relays Replaced
page: https://kanterella.com/05000255/LER-2D1993-2D012-2C_-3Aon_931103-2Cconcluded_That_Seismic_Qualification_Did_Not_Exist_for_Relays_Previously_Installed_in_Chp_-26_Chr_Circuits_Due_to_Undersized_Relay_Co…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-012, :on 931103,concluded That Seismic Qualification Did Not Exist for Relays Previously Installed in Chp & Chr Circuits Due to Undersized Relay Coils.Undersized Coils in Relays Replaced

05000255/LER-1992-028, :on 920331,potential Inability to Maintain Diesel Generator Room Temp Qualification Due to non-1E Qualified Cooling Fan Noted.Procedures Revised & Design Will Be Corrected
type: Subject
page: https://kanterella.com/05000255/LER-2D1992-2D028-2C_-3Aon_920331-2Cpotential_Inability_to_Maintain_Diesel_Generator_Room_Temp_Qualification_Due_to_non-2D1E_Qualified_Cooling_Fan_Noted.Procedures_Revis…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-028, :on 920331,potential Inability to Maintain Diesel Generator Room Temp Qualification Due to non-1E Qualified Cooling Fan Noted.Procedures Revised & Design Will Be Corrected

05000255/LER-1993-003, :on 930428,unusual Event Declared & Plant Shutdown Commenced Due to Primary Coolant Sys Unidentified Leakage in Excess of Ts.Leaking CRDM Mechanical Seal Packages Repaired
type: Subject
page: https://kanterella.com/05000255/LER-2D1993-2D003-2C_-3Aon_930428-2Cunusual_Event_Declared_-26_Plant_Shutdown_Commenced_Due_to_Primary_Coolant_Sys_Unidentified_Leakage_in_Excess_of_Ts.Leaking_CRDM_Mech…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-003, :on 930428,unusual Event Declared & Plant Shutdown Commenced Due to Primary Coolant Sys Unidentified Leakage in Excess of Ts.Leaking CRDM Mechanical Seal Packages Repaired

Vendor Manuals Updated
type: Subject
label: 05000255/LER-1992-038, :on 920825,reactor Tripped,Resulting from Loss of Preferred Ac Bus Y-20,coincident W/Blown Fuse in Second Channel of Rps.Caused by Failure of Inverter ED-07.All Fuses Checked & Plant Drawings/Vendor Manuals Updated
page: https://kanterella.com/05000255/LER-2D1992-2D038-2C_-3Aon_920825-2Creactor_Tripped-2CResulting_from_Loss_of_Preferred_Ac_Bus_Y-2D20-2Ccoincident_W/Blown_Fuse_in_Second_Channel_of_Rps.Caused_by_Failure…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-038, :on 920825,reactor Tripped,Resulting from Loss of Preferred Ac Bus Y-20,coincident W/Blown Fuse in Second Channel of Rps.Caused by Failure of Inverter ED-07.All Fuses Checked & Plant Drawings/Vendor Manuals Updated

LER-1992-039, :on 921030,reactor Automatically Tripped Due to Loss of Load Resulting from Unstable Voltage to Turbine Control Sys Computers.Caused by Failure to Maintain Power Voltage to Ups.New Transformers Installed
type: Subject
label: 05000255/LER-1992-039, :on 921030,reactor Automatically Tripped Due to Loss of Load Resulting from Unstable Voltage to Turbine Control Sys Computers.Caused by Failure to Maintain Power Voltage to Ups.New Transformers Installed
page: https://kanterella.com/05000255/LER-2D1992-2D039-2C_-3Aon_921030-2Creactor_Automatically_Tripped_Due_to_Loss_of_Load_Resulting_from_Unstable_Voltage_to_Turbine_Control_Sys_Computers.Caused_by_Failure_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-039, :on 921030,reactor Automatically Tripped Due to Loss of Load Resulting from Unstable Voltage to Turbine Control Sys Computers.Caused by Failure to Maintain Power Voltage to Ups.New Transformers Installed

LER-1992-034, :on 920701,reactor Automatically Tripped on Loss of Load Signal,Resulting in Turbine Generator Trip & Loss of Signal.Caused by Momentary Loss of Power to Turbine Sys computers.Post-trip Review Completed
type: Subject
label: 05000255/LER-1992-034, :on 920701,reactor Automatically Tripped on Loss of Load Signal,Resulting in Turbine Generator Trip & Loss of Signal.Caused by Momentary Loss of Power to Turbine Sys computers.Post-trip Review Completed
page: https://kanterella.com/05000255/LER-2D1992-2D034-2C_-3Aon_920701-2Creactor_Automatically_Tripped_on_Loss_of_Load_Signal-2CResulting_in_Turbine_Generator_Trip_-26_Loss_of_Signal.Caused_by_Momentary_Los…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-034, :on 920701,reactor Automatically Tripped on Loss of Load Signal,Resulting in Turbine Generator Trip & Loss of Signal.Caused by Momentary Loss of Power to Turbine Sys computers.Post-trip Review Completed

LER-1992-036, :on 920802,during Monthly TS Procedure for 1-1 Edg,Noted That Exhaust Temp Indicated Low Reading.Caused by Lack of Adequate Controls in DG Cylinder Latch.Edg Test Procedures Will Be Revised
type: Subject
label: 05000255/LER-1992-036, :on 920802,during Monthly TS Procedure for 1-1 Edg,Noted That Exhaust Temp Indicated Low Reading.Caused by Lack of Adequate Controls in DG Cylinder Latch.Edg Test Procedures Will Be Revised
page: https://kanterella.com/05000255/LER-2D1992-2D036-2C_-3Aon_920802-2Cduring_Monthly_TS_Procedure_for_1-2D1_Edg-2CNoted_That_Exhaust_Temp_Indicated_Low_Reading.Caused_by_Lack_of_Adequate_Controls_in_DG_C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-036, :on 920802,during Monthly TS Procedure for 1-1 Edg,Noted That Exhaust Temp Indicated Low Reading.Caused by Lack of Adequate Controls in DG Cylinder Latch.Edg Test Procedures Will Be Revised

LER-1992-035, :on 920724,reactor Tripped Due to Loss of Turbine Digital Electrohydraulic Control Sys.Caused by Momentary Loss of Power to Electrohydraulic Sys Computers. Power Supply Switching Circuits Replaced
type: Subject
label: 05000255/LER-1992-035, :on 920724,reactor Tripped Due to Loss of Turbine Digital Electrohydraulic Control Sys.Caused by Momentary Loss of Power to Electrohydraulic Sys Computers. Power Supply Switching Circuits Replaced
page: https://kanterella.com/05000255/LER-2D1992-2D035-2C_-3Aon_920724-2Creactor_Tripped_Due_to_Loss_of_Turbine_Digital_Electrohydraulic_Control_Sys.Caused_by_Momentary_Loss_of_Power_to_Electrohydraulic_Sys…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-035, :on 920724,reactor Tripped Due to Loss of Turbine Digital Electrohydraulic Control Sys.Caused by Momentary Loss of Power to Electrohydraulic Sys Computers. Power Supply Switching Circuits Replaced

LER-1992-017, :on 920229,unusual Event Declared When Upper Guide Structure Raised for Removal from Reactor Vessel & Fuel Assembly Observed Hanging from Structure.Caused by Bent Fuel Alignment Pins.Pins Straightened
type: Subject
label: 05000255/LER-1992-017, :on 920229,unusual Event Declared When Upper Guide Structure Raised for Removal from Reactor Vessel & Fuel Assembly Observed Hanging from Structure.Caused by Bent Fuel Alignment Pins.Pins Straightened
page: https://kanterella.com/05000255/LER-2D1992-2D017-2C_-3Aon_920229-2Cunusual_Event_Declared_When_Upper_Guide_Structure_Raised_for_Removal_from_Reactor_Vessel_-26_Fuel_Assembly_Observed_Hanging_from_Stru…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-017, :on 920229,unusual Event Declared When Upper Guide Structure Raised for Removal from Reactor Vessel & Fuel Assembly Observed Hanging from Structure.Caused by Bent Fuel Alignment Pins.Pins Straightened

LER-1993-001-01, :on 930106,EDG 1-1 & 1-2 Simultaneously Inoperable When Overspeed Trip Device for DG 1-1 Tripped. Caused by Personnel Failing to Follow Switching & Tagging Order.Overspeed Trip Devices Labeled
type: Subject
label: 05000255/LER-1993-001-01, :on 930106,EDG 1-1 & 1-2 Simultaneously Inoperable When Overspeed Trip Device for DG 1-1 Tripped. Caused by Personnel Failing to Follow Switching & Tagging Order.Overspeed Trip Devices Labeled
page: https://kanterella.com/05000255/LER-2D1993-2D001-2D01-2C_-3Aon_930106-2CEDG_1-2D1_-26_1-2D2_Simultaneously_Inoperable_When_Overspeed_Trip_Device_for_DG_1-2D1_Tripped._Caused_by_Personnel_Failing_to_Fo…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1993-001-01, :on 930106,EDG 1-1 & 1-2 Simultaneously Inoperable When Overspeed Trip Device for DG 1-1 Tripped. Caused by Personnel Failing to Follow Switching & Tagging Order.Overspeed Trip Devices Labeled

LER-1992-033, :on 920414,inoperable Control Room Penetration Occurred.Caused by Misapplication of Procedures & Inaccurate Procedures.Plant Administrative Procedure on Control of Equipment Status Will Be Updated
type: Subject
label: 05000255/LER-1992-033, :on 920414,inoperable Control Room Penetration Occurred.Caused by Misapplication of Procedures & Inaccurate Procedures.Plant Administrative Procedure on Control of Equipment Status Will Be Updated
page: https://kanterella.com/05000255/LER-2D1992-2D033-2C_-3Aon_920414-2Cinoperable_Control_Room_Penetration_Occurred.Caused_by_Misapplication_of_Procedures_-26_Inaccurate_Procedures.Plant_Administrative_Pr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-033, :on 920414,inoperable Control Room Penetration Occurred.Caused by Misapplication of Procedures & Inaccurate Procedures.Plant Administrative Procedure on Control of Equipment Status Will Be Updated

LER-1992-037, :on 920814,reactor Tripped Due to Low SG Level Resulting from Broken Air Line on Main Feedwater Regulating Valve.Air Lines to Main Feedwater Regulating Valves CV-0701 & CV-0703 Replaced & Satisfactorily Tested
type: Subject
label: 05000255/LER-1992-037, :on 920814,reactor Tripped Due to Low SG Level Resulting from Broken Air Line on Main Feedwater Regulating Valve.Air Lines to Main Feedwater Regulating Valves CV-0701 & CV-0703 Replaced & Satisfactorily Tested
page: https://kanterella.com/05000255/LER-2D1992-2D037-2C_-3Aon_920814-2Creactor_Tripped_Due_to_Low_SG_Level_Resulting_from_Broken_Air_Line_on_Main_Feedwater_Regulating_Valve.Air_Lines_to_Main_Feedwater_Reg…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1992-037, :on 920814,reactor Tripped Due to Low SG Level Resulting from Broken Air Line on Main Feedwater Regulating Valve.Air Lines to Main Feedwater Regulating Valves CV-0701 & CV-0703 Replaced & Satisfactorily Tested

LER-1988-004, :on 880303,required Dissolved Oxygen Analysis Not Completed.Caused by Personnel Error.Data Sheets Revised to Clearly Identify Analyses Required by Tech Specs & Required Time to Be Completed
type: Subject
label: 05000255/LER-1988-004, :on 880303,required Dissolved Oxygen Analysis Not Completed.Caused by Personnel Error.Data Sheets Revised to Clearly Identify Analyses Required by Tech Specs & Required Time to Be Completed
page: https://kanterella.com/05000255/LER-2D1988-2D004-2C_-3Aon_880303-2Crequired_Dissolved_Oxygen_Analysis_Not_Completed.Caused_by_Personnel_Error.Data_Sheets_Revised_to_Clearly_Identify_Analyses_Required_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1988-004, :on 880303,required Dissolved Oxygen Analysis Not Completed.Caused by Personnel Error.Data Sheets Revised to Clearly Identify Analyses Required by Tech Specs & Required Time to Be Completed

LER-1988-008, :on 880512,containment Penetration Declared Inoperable Due to Failure to Complete Required Local Leak Rate Test within Prescribed Time Limitation.Caused by Data Entry Error.Test Schedule Verified
type: Subject
label: 05000255/LER-1988-008, :on 880512,containment Penetration Declared Inoperable Due to Failure to Complete Required Local Leak Rate Test within Prescribed Time Limitation.Caused by Data Entry Error.Test Schedule Verified
page: https://kanterella.com/05000255/LER-2D1988-2D008-2C_-3Aon_880512-2Ccontainment_Penetration_Declared_Inoperable_Due_to_Failure_to_Complete_Required_Local_Leak_Rate_Test_within_Prescribed_Time_Limitatio…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1988-008, :on 880512,containment Penetration Declared Inoperable Due to Failure to Complete Required Local Leak Rate Test within Prescribed Time Limitation.Caused by Data Entry Error.Test Schedule Verified

Reactor Trip Occurred Due to High Water Level in Steam Generator C.Caused by Valve Vibration & Hydraulic Forces
type: Subject
label: 05000412/LER-1989-003, :on 890212,noticed Erratic Operation of Main Feedwater Regulating Valve C & Turbine Trip/Reactor Trip Occurred Due to High Water Level in Steam Generator C.Caused by Valve Vibration & Hydraulic Forces
page: https://kanterella.com/05000412/LER-2D1989-2D003-2C_-3Aon_890212-2Cnoticed_Erratic_Operation_of_Main_Feedwater_Regulating_Valve_C_-26_Turbine_Trip/Reactor_Trip_Occurred_Due_to_High_Water_Level_in_Stea…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000412/LER-1989-003, :on 890212,noticed Erratic Operation of Main Feedwater Regulating Valve C & Turbine Trip/Reactor Trip Occurred Due to High Water Level in Steam Generator C.Caused by Valve Vibration & Hydraulic Forces

Seat Interface Resulting in Drifting.Main Steam SRV Pilot Replaced
type: Subject
label: 05000296/LER-1997-003-01, :on 970314,Unit 3 Main Steam SRVs Pilot Cartridges Failed Setpoint Tolerance Bench Tests.Caused by Corrosion Bonding of SRV Pilot Disc/Seat Interface Resulting in Drifting.Main Steam SRV Pilot Replaced
page: https://kanterella.com/05000296/LER-2D1997-2D003-2D01-2C_-3Aon_970314-2CUnit_3_Main_Steam_SRVs_Pilot_Cartridges_Failed_Setpoint_Tolerance_Bench_Tests.Caused_by_Corrosion_Bonding_of_SRV_Pilot_Disc/Seat…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000296/LER-1997-003-01, :on 970314,Unit 3 Main Steam SRVs Pilot Cartridges Failed Setpoint Tolerance Bench Tests.Caused by Corrosion Bonding of SRV Pilot Disc/Seat Interface Resulting in Drifting.Main Steam SRV Pilot Replaced

LER-1989-014, :on 890413,unit Reactor Experienced Reactor Scram Which Was Result of Turbine Trip Due to Actuation of Generator Protection Circuitry.Turbine Trip Caused by Disconnected Wire.Wire Relanded
type: Subject
label: 05000410/LER-1989-014, :on 890413,unit Reactor Experienced Reactor Scram Which Was Result of Turbine Trip Due to Actuation of Generator Protection Circuitry.Turbine Trip Caused by Disconnected Wire.Wire Relanded
page: https://kanterella.com/05000410/LER-2D1989-2D014-2C_-3Aon_890413-2Cunit_Reactor_Experienced_Reactor_Scram_Which_Was_Result_of_Turbine_Trip_Due_to_Actuation_of_Generator_Protection_Circuitry.Turbine_Tr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000410/LER-1989-014, :on 890413,unit Reactor Experienced Reactor Scram Which Was Result of Turbine Trip Due to Actuation of Generator Protection Circuitry.Turbine Trip Caused by Disconnected Wire.Wire Relanded

LER-1989-001-03, :on 890209,failure to Provide Required Continuous Fire Watch on Inoperable Fire Doors,Per Tech Spec 3.11.E.Caused by Insufficient Training of Fire Protection Personnel.Corrective Maint Initiated
type: Subject
label: 05000296/LER-1989-001-03, :on 890209,failure to Provide Required Continuous Fire Watch on Inoperable Fire Doors,Per Tech Spec 3.11.E.Caused by Insufficient Training of Fire Protection Personnel.Corrective Maint Initiated
page: https://kanterella.com/05000296/LER-2D1989-2D001-2D03-2C_-3Aon_890209-2Cfailure_to_Provide_Required_Continuous_Fire_Watch_on_Inoperable_Fire_Doors-2CPer_Tech_Spec_3.11.E.Caused_by_Insufficient_Trainin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000296/LER-1989-001-03, :on 890209,failure to Provide Required Continuous Fire Watch on Inoperable Fire Doors,Per Tech Spec 3.11.E.Caused by Insufficient Training of Fire Protection Personnel.Corrective Maint Initiated

LER-1988-007-04, :on 880929,diesel Generator 3C Overheated Due to Inadvertent Isolation of Emergency Equipment Cooling Water.Caused by Valve Misalignment & Error in Flow Diagrams.Surveillance Instruction Revised
type: Subject
label: 05000296/LER-1988-007-04, :on 880929,diesel Generator 3C Overheated Due to Inadvertent Isolation of Emergency Equipment Cooling Water.Caused by Valve Misalignment & Error in Flow Diagrams.Surveillance Instruction Revised
page: https://kanterella.com/05000296/LER-2D1988-2D007-2D04-2C_-3Aon_880929-2Cdiesel_Generator_3C_Overheated_Due_to_Inadvertent_Isolation_of_Emergency_Equipment_Cooling_Water.Caused_by_Valve_Misalignment_-2…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000296/LER-1988-007-04, :on 880929,diesel Generator 3C Overheated Due to Inadvertent Isolation of Emergency Equipment Cooling Water.Caused by Valve Misalignment & Error in Flow Diagrams.Surveillance Instruction Revised

LER-1989-003, :on 890307,unplanned ESF Actuations Occurred. Caused by Voltage Transient Due to Start of Control Bay Chiller 3B Because of Design of Circuit Protectors Being Sensitive to Minor Electrical Disturbances
type: Subject
label: 05000296/LER-1989-003, :on 890307,unplanned ESF Actuations Occurred. Caused by Voltage Transient Due to Start of Control Bay Chiller 3B Because of Design of Circuit Protectors Being Sensitive to Minor Electrical Disturbances
page: https://kanterella.com/05000296/LER-2D1989-2D003-2C_-3Aon_890307-2Cunplanned_ESF_Actuations_Occurred._Caused_by_Voltage_Transient_Due_to_Start_of_Control_Bay_Chiller_3B_Because_of_Design_of_Circuit_Pr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000296/LER-1989-003, :on 890307,unplanned ESF Actuations Occurred. Caused by Voltage Transient Due to Start of Control Bay Chiller 3B Because of Design of Circuit Protectors Being Sensitive to Minor Electrical Disturbances

LER-1988-016-02, :on 880320,offgas Sys Stack Flow Monitor Inoperable & Flow Rate Monitored Every 6 H Instead of 4 H in Violation of Tech Specs.Caused by Personnel Error.Flow Recording Initiated Every 4 H
type: Subject
label: 05000296/LER-1988-016-02, :on 880320,offgas Sys Stack Flow Monitor Inoperable & Flow Rate Monitored Every 6 H Instead of 4 H in Violation of Tech Specs.Caused by Personnel Error.Flow Recording Initiated Every 4 H
page: https://kanterella.com/05000296/LER-2D1988-2D016-2D02-2C_-3Aon_880320-2Coffgas_Sys_Stack_Flow_Monitor_Inoperable_-26_Flow_Rate_Monitored_Every_6_H_Instead_of_4_H_in_Violation_of_Tech_Specs.Caused_by_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000296/LER-1988-016-02, :on 880320,offgas Sys Stack Flow Monitor Inoperable & Flow Rate Monitored Every 6 H Instead of 4 H in Violation of Tech Specs.Caused by Personnel Error.Flow Recording Initiated Every 4 H

Continuous Conductivity Monitor Inoperable as Required by Tech Specs. Caused by Procedural Deficiencies
type: Subject
label: 05000296/LER-1989-002-03, :on 890307,discovered That Compensatory Reactor Coolant Water Sampling Not Performed W/Continuous Conductivity Monitor Inoperable as Required by Tech Specs. Caused by Procedural Deficiencies
page: https://kanterella.com/05000296/LER-2D1989-2D002-2D03-2C_-3Aon_890307-2Cdiscovered_That_Compensatory_Reactor_Coolant_Water_Sampling_Not_Performed_W/Continuous_Conductivity_Monitor_Inoperable_as_Requir…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000296/LER-1989-002-03, :on 890307,discovered That Compensatory Reactor Coolant Water Sampling Not Performed W/Continuous Conductivity Monitor Inoperable as Required by Tech Specs. Caused by Procedural Deficiencies

LER-1987-044, :on 870713,Tech Spec Surveillance for Axial Flux Difference Missed.Caused by Personnel Error.Operator Counseled.Repairs in Progress to Repair Automatic Axial Flux Difference Monitor
type: Subject
label: 05000400/LER-1987-044, :on 870713,Tech Spec Surveillance for Axial Flux Difference Missed.Caused by Personnel Error.Operator Counseled.Repairs in Progress to Repair Automatic Axial Flux Difference Monitor
page: https://kanterella.com/05000400/LER-2D1987-2D044-2C_-3Aon_870713-2CTech_Spec_Surveillance_for_Axial_Flux_Difference_Missed.Caused_by_Personnel_Error.Operator_Counseled.Repairs_in_Progress_to_Repair_Au…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-044, :on 870713,Tech Spec Surveillance for Axial Flux Difference Missed.Caused by Personnel Error.Operator Counseled.Repairs in Progress to Repair Automatic Axial Flux Difference Monitor

LER-1992-011-02, :on 920721,determined That Testing of Emergency Bus Undervoltage Log Circuitry Inadequate.Caused by Inadequately Prepared Surveillance Test procedures.OST-1823 & OST-1824 Will Be Revised
type: Subject
label: 05000400/LER-1992-011-02, :on 920721,determined That Testing of Emergency Bus Undervoltage Log Circuitry Inadequate.Caused by Inadequately Prepared Surveillance Test procedures.OST-1823 & OST-1824 Will Be Revised
page: https://kanterella.com/05000400/LER-2D1992-2D011-2D02-2C_-3Aon_920721-2Cdetermined_That_Testing_of_Emergency_Bus_Undervoltage_Log_Circuitry_Inadequate.Caused_by_Inadequately_Prepared_Surveillance_Test…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1992-011-02, :on 920721,determined That Testing of Emergency Bus Undervoltage Log Circuitry Inadequate.Caused by Inadequately Prepared Surveillance Test procedures.OST-1823 & OST-1824 Will Be Revised

LER-1990-013, :on 900503,valve Misalignment Caused Unplanned Release from Waste Gas Sys to Waste Process Bldg Vent Stack 5.Valve Position Corrected,Procedures Changed & Training of Personnel Initiated
type: Subject
label: 05000400/LER-1990-013, :on 900503,valve Misalignment Caused Unplanned Release from Waste Gas Sys to Waste Process Bldg Vent Stack 5.Valve Position Corrected,Procedures Changed & Training of Personnel Initiated
page: https://kanterella.com/05000400/LER-2D1990-2D013-2C_-3Aon_900503-2Cvalve_Misalignment_Caused_Unplanned_Release_from_Waste_Gas_Sys_to_Waste_Process_Bldg_Vent_Stack_5.Valve_Position_Corrected-2CProcedur…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1990-013, :on 900503,valve Misalignment Caused Unplanned Release from Waste Gas Sys to Waste Process Bldg Vent Stack 5.Valve Position Corrected,Procedures Changed & Training of Personnel Initiated

LER-1990-006, :on 900309,discovered That Evolution Violated Requirements of FSAR to Keep Individual Tanks Isolated from Another Tank.Caused by Failure to Address Evolution in Operating Procedure.Procedure Revised
type: Subject
label: 05000400/LER-1990-006, :on 900309,discovered That Evolution Violated Requirements of FSAR to Keep Individual Tanks Isolated from Another Tank.Caused by Failure to Address Evolution in Operating Procedure.Procedure Revised
page: https://kanterella.com/05000400/LER-2D1990-2D006-2C_-3Aon_900309-2Cdiscovered_That_Evolution_Violated_Requirements_of_FSAR_to_Keep_Individual_Tanks_Isolated_from_Another_Tank.Caused_by_Failure_to_Addr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1990-006, :on 900309,discovered That Evolution Violated Requirements of FSAR to Keep Individual Tanks Isolated from Another Tank.Caused by Failure to Address Evolution in Operating Procedure.Procedure Revised

LER-1990-014, :on 900516,discovered That Two Liquid Radioactive Releases Initiated on 900513 Were in Excess of Flow Rate Specified on Release Permits.Caused by Personnel Error.Max Release Rate Must Be Recorded
type: Subject
label: 05000400/LER-1990-014, :on 900516,discovered That Two Liquid Radioactive Releases Initiated on 900513 Were in Excess of Flow Rate Specified on Release Permits.Caused by Personnel Error.Max Release Rate Must Be Recorded
page: https://kanterella.com/05000400/LER-2D1990-2D014-2C_-3Aon_900516-2Cdiscovered_That_Two_Liquid_Radioactive_Releases_Initiated_on_900513_Were_in_Excess_of_Flow_Rate_Specified_on_Release_Permits.Caused_b…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1990-014, :on 900516,discovered That Two Liquid Radioactive Releases Initiated on 900513 Were in Excess of Flow Rate Specified on Release Permits.Caused by Personnel Error.Max Release Rate Must Be Recorded

LER-1991-001, :on 910103,operations Personnel Identified Procedural Deficiency That Resulted in Check Valves Not Being Tested as Required.Caused by Procedural Deficiency. Procedure Revised to Incorporate Testing
type: Subject
label: 05000400/LER-1991-001, :on 910103,operations Personnel Identified Procedural Deficiency That Resulted in Check Valves Not Being Tested as Required.Caused by Procedural Deficiency. Procedure Revised to Incorporate Testing
page: https://kanterella.com/05000400/LER-2D1991-2D001-2C_-3Aon_910103-2Coperations_Personnel_Identified_Procedural_Deficiency_That_Resulted_in_Check_Valves_Not_Being_Tested_as_Required.Caused_by_Procedural…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1991-001, :on 910103,operations Personnel Identified Procedural Deficiency That Resulted in Check Valves Not Being Tested as Required.Caused by Procedural Deficiency. Procedure Revised to Incorporate Testing

LER-1989-017-01, On 891009,generator & Main Power Transformer Phase Differential Relay Tripped Lockout Relay.Caused by Multiple Ground Faults.Design Changes & Repairs Being Conducted While Plant Performs Refueling
type: Subject
label: 05000400/LER-1989-017-01, On 891009,generator & Main Power Transformer Phase Differential Relay Tripped Lockout Relay.Caused by Multiple Ground Faults.Design Changes & Repairs Being Conducted While Plant Performs Refueling
page: https://kanterella.com/05000400/LER-2D1989-2D017-2D01-2C_On_891009-2Cgenerator_-26_Main_Power_Transformer_Phase_Differential_Relay_Tripped_Lockout_Relay.Caused_by_Multiple_Ground_Faults.Design_Changes…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1989-017-01, On 891009,generator & Main Power Transformer Phase Differential Relay Tripped Lockout Relay.Caused by Multiple Ground Faults.Design Changes & Repairs Being Conducted While Plant Performs Refueling

LER-1989-017-03, :on 891009,turbine & Reactor Tripped Due to Generator & Main Power Transformer Phase Differential Relay Trip.Caused by Multiple Shorts to Ground.Design Changes & Repairs Being Conducted
type: Subject
label: 05000400/LER-1989-017-03, :on 891009,turbine & Reactor Tripped Due to Generator & Main Power Transformer Phase Differential Relay Trip.Caused by Multiple Shorts to Ground.Design Changes & Repairs Being Conducted
page: https://kanterella.com/05000400/LER-2D1989-2D017-2D03-2C_-3Aon_891009-2Cturbine_-26_Reactor_Tripped_Due_to_Generator_-26_Main_Power_Transformer_Phase_Differential_Relay_Trip.Caused_by_Multiple_Shorts_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1989-017-03, :on 891009,turbine & Reactor Tripped Due to Generator & Main Power Transformer Phase Differential Relay Trip.Caused by Multiple Shorts to Ground.Design Changes & Repairs Being Conducted

LER-1989-015-01, :on 890827,discovered That Fuel Handling Bldg Operating Floor Equipment Hatch in Storage Location on Operating Deck Not Installed as Required.Caused by Inadequate Procedure.Procedure Revised
type: Subject
label: 05000400/LER-1989-015-01, :on 890827,discovered That Fuel Handling Bldg Operating Floor Equipment Hatch in Storage Location on Operating Deck Not Installed as Required.Caused by Inadequate Procedure.Procedure Revised
page: https://kanterella.com/05000400/LER-2D1989-2D015-2D01-2C_-3Aon_890827-2Cdiscovered_That_Fuel_Handling_Bldg_Operating_Floor_Equipment_Hatch_in_Storage_Location_on_Operating_Deck_Not_Installed_as_Requir…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1989-015-01, :on 890827,discovered That Fuel Handling Bldg Operating Floor Equipment Hatch in Storage Location on Operating Deck Not Installed as Required.Caused by Inadequate Procedure.Procedure Revised

LER-1989-004, :on 890207,loss of All Three Circulating Water Pumps Resulted in Loss of All Flow to Main Condenser, Causing Reactor Trip.Caused by Air Entering Circulating Water Pump Seal Water Sys.Components Repaired
type: Subject
label: 05000400/LER-1989-004, :on 890207,loss of All Three Circulating Water Pumps Resulted in Loss of All Flow to Main Condenser, Causing Reactor Trip.Caused by Air Entering Circulating Water Pump Seal Water Sys.Components Repaired
page: https://kanterella.com/05000400/LER-2D1989-2D004-2C_-3Aon_890207-2Closs_of_All_Three_Circulating_Water_Pumps_Resulted_in_Loss_of_All_Flow_to_Main_Condenser-2C_Causing_Reactor_Trip.Caused_by_Air_Enteri…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1989-004, :on 890207,loss of All Three Circulating Water Pumps Resulted in Loss of All Flow to Main Condenser, Causing Reactor Trip.Caused by Air Entering Circulating Water Pump Seal Water Sys.Components Repaired

LER-1990-016, :on 900529,invalid Testing of Fuel Handling Bldg Emergency Exhaust Filtration Unit Occurred.Caused by Inadequate Location of Duct Flowrate Measurements.Test Procedure for Filtration Units Will Be Revised
type: Subject
label: 05000400/LER-1990-016, :on 900529,invalid Testing of Fuel Handling Bldg Emergency Exhaust Filtration Unit Occurred.Caused by Inadequate Location of Duct Flowrate Measurements.Test Procedure for Filtration Units Will Be Revised
page: https://kanterella.com/05000400/LER-2D1990-2D016-2C_-3Aon_900529-2Cinvalid_Testing_of_Fuel_Handling_Bldg_Emergency_Exhaust_Filtration_Unit_Occurred.Caused_by_Inadequate_Location_of_Duct_Flowrate_Measu…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1990-016, :on 900529,invalid Testing of Fuel Handling Bldg Emergency Exhaust Filtration Unit Occurred.Caused by Inadequate Location of Duct Flowrate Measurements.Test Procedure for Filtration Units Will Be Revised

LER-1988-033, :on 881125 & 1202,declared Charging Safety Injection Pump (Csip) Inoperable.Caused by 1C Csip Scantily Covered in ESF Response Surveillance Test Procedures.Test to Verify 1C Csip Response Time Completed
type: Subject
label: 05000400/LER-1988-033, :on 881125 & 1202,declared Charging Safety Injection Pump (Csip) Inoperable.Caused by 1C Csip Scantily Covered in ESF Response Surveillance Test Procedures.Test to Verify 1C Csip Response Time Completed
page: https://kanterella.com/05000400/LER-2D1988-2D033-2C_-3Aon_881125_-26_1202-2Cdeclared_Charging_Safety_Injection_Pump_-28Csip-29_Inoperable.Caused_by_1C_Csip_Scantily_Covered_in_ESF_Response_Surveillanc…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1988-033, :on 881125 & 1202,declared Charging Safety Injection Pump (Csip) Inoperable.Caused by 1C Csip Scantily Covered in ESF Response Surveillance Test Procedures.Test to Verify 1C Csip Response Time Completed

LER-1988-023, :on 880812,reactor Coolant Sys Vent Less than Required by Tech Spec 3.4.9.4 for Low Temp Overpressure Protection.Caused by Failed Valve Gagging Device.Longer Gagging Device Installed
type: Subject
label: 05000400/LER-1988-023, :on 880812,reactor Coolant Sys Vent Less than Required by Tech Spec 3.4.9.4 for Low Temp Overpressure Protection.Caused by Failed Valve Gagging Device.Longer Gagging Device Installed
page: https://kanterella.com/05000400/LER-2D1988-2D023-2C_-3Aon_880812-2Creactor_Coolant_Sys_Vent_Less_than_Required_by_Tech_Spec_3.4.9.4_for_Low_Temp_Overpressure_Protection.Caused_by_Failed_Valve_Gagging_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1988-023, :on 880812,reactor Coolant Sys Vent Less than Required by Tech Spec 3.4.9.4 for Low Temp Overpressure Protection.Caused by Failed Valve Gagging Device.Longer Gagging Device Installed

LER-1988-031, :on 880614-21 & 0723-26,wide Range Gas Monitor Inoperable & Compensatory Actions Not Taken or Documented as Being Taken as Required Due to Personnel Error.Caused by Failure to Install EC4-X as Required
type: Subject
label: 05000400/LER-1988-031, :on 880614-21 & 0723-26,wide Range Gas Monitor Inoperable & Compensatory Actions Not Taken or Documented as Being Taken as Required Due to Personnel Error.Caused by Failure to Install EC4-X as Required
page: https://kanterella.com/05000400/LER-2D1988-2D031-2C_-3Aon_880614-2D21_-26_0723-2D26-2Cwide_Range_Gas_Monitor_Inoperable_-26_Compensatory_Actions_Not_Taken_or_Documented_as_Being_Taken_as_Required_Due_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1988-031, :on 880614-21 & 0723-26,wide Range Gas Monitor Inoperable & Compensatory Actions Not Taken or Documented as Being Taken as Required Due to Personnel Error.Caused by Failure to Install EC4-X as Required

LER-1988-024, :on 880812,maint Surveillance Tests Verifying Nuclear Instrumentation Source Range Monitor Operability Not Performed Prior to Mode 6 Entry.Caused by Deficient Planning & Scheduling.Surveillance Tests Scheduled
type: Subject
label: 05000400/LER-1988-024, :on 880812,maint Surveillance Tests Verifying Nuclear Instrumentation Source Range Monitor Operability Not Performed Prior to Mode 6 Entry.Caused by Deficient Planning & Scheduling.Surveillance Tests Scheduled
page: https://kanterella.com/05000400/LER-2D1988-2D024-2C_-3Aon_880812-2Cmaint_Surveillance_Tests_Verifying_Nuclear_Instrumentation_Source_Range_Monitor_Operability_Not_Performed_Prior_to_Mode_6_Entry.Cause…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1988-024, :on 880812,maint Surveillance Tests Verifying Nuclear Instrumentation Source Range Monitor Operability Not Performed Prior to Mode 6 Entry.Caused by Deficient Planning & Scheduling.Surveillance Tests Scheduled

LER-1987-052, :on 870831,mechanic & Health Physics Technician Exiting Containment Through Personnel Access Hatch When One of Door o-ring Seals Fell Out of Groove.Caused by Personnel Error.Work Request Issued to Repair Door
type: Subject
label: 05000400/LER-1987-052, :on 870831,mechanic & Health Physics Technician Exiting Containment Through Personnel Access Hatch When One of Door o-ring Seals Fell Out of Groove.Caused by Personnel Error.Work Request Issued to Repair Door
page: https://kanterella.com/05000400/LER-2D1987-2D052-2C_-3Aon_870831-2Cmechanic_-26_Health_Physics_Technician_Exiting_Containment_Through_Personnel_Access_Hatch_When_One_of_Door_o-2Dring_Seals_Fell_Out_of…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-052, :on 870831,mechanic & Health Physics Technician Exiting Containment Through Personnel Access Hatch When One of Door o-ring Seals Fell Out of Groove.Caused by Personnel Error.Work Request Issued to Repair Door

05000400/LER-1987-056, :on 870924,reactor Tripped Due to Deenergization of P-13 Permissive Bistable.Caused by Personnel Error Due to Insufficient Instructions.Procedure for Mod Implementation Revised
type: Subject
page: https://kanterella.com/05000400/LER-2D1987-2D056-2C_-3Aon_870924-2Creactor_Tripped_Due_to_Deenergization_of_P-2D13_Permissive_Bistable.Caused_by_Personnel_Error_Due_to_Insufficient_Instructions.Proced…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-056, :on 870924,reactor Tripped Due to Deenergization of P-13 Permissive Bistable.Caused by Personnel Error Due to Insufficient Instructions.Procedure for Mod Implementation Revised

LER-1987-047, :on 870804-05,auxiliary Feedwater Actuations Occurred Due to Trips of Main Feedwater Pump 1A.Caused by Discharge Pressure Switches Out of Calibr.Discharge Pressure Switches Recalibr
type: Subject
label: 05000400/LER-1987-047, :on 870804-05,auxiliary Feedwater Actuations Occurred Due to Trips of Main Feedwater Pump 1A.Caused by Discharge Pressure Switches Out of Calibr.Discharge Pressure Switches Recalibr
page: https://kanterella.com/05000400/LER-2D1987-2D047-2C_-3Aon_870804-2D05-2Cauxiliary_Feedwater_Actuations_Occurred_Due_to_Trips_of_Main_Feedwater_Pump_1A.Caused_by_Discharge_Pressure_Switches_Out_of_Cali…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-047, :on 870804-05,auxiliary Feedwater Actuations Occurred Due to Trips of Main Feedwater Pump 1A.Caused by Discharge Pressure Switches Out of Calibr.Discharge Pressure Switches Recalibr

Water in Monitor.On 870327,monitor Declared Operable & Lined Up to Sample Stack. Turbine Bldg Vent Stack Reinstated
type: Subject
label: 05000400/LER-1987-016, :on 870323 & 26,turbine Bldg Vent Stack Monitor Declared Inoperable Due to Problems W/Water in Monitor.On 870327,monitor Declared Operable & Lined Up to Sample Stack. Turbine Bldg Vent Stack Reinstated
page: https://kanterella.com/05000400/LER-2D1987-2D016-2C_-3Aon_870323_-26_26-2Cturbine_Bldg_Vent_Stack_Monitor_Declared_Inoperable_Due_to_Problems_W/Water_in_Monitor.On_870327-2Cmonitor_Declared_Operable_-…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-016, :on 870323 & 26,turbine Bldg Vent Stack Monitor Declared Inoperable Due to Problems W/Water in Monitor.On 870327,monitor Declared Operable & Lined Up to Sample Stack. Turbine Bldg Vent Stack Reinstated

LER-1987-034, :on 870611,air Leakage by Inner & Outer Doors of Personnel Air Lock Excessive.Caused by Flat Spots on O-ring Seal.Seals on Inner & Outer Doors Replaced & Procedure OMM-001 Revised
type: Subject
label: 05000400/LER-1987-034, :on 870611,air Leakage by Inner & Outer Doors of Personnel Air Lock Excessive.Caused by Flat Spots on O-ring Seal.Seals on Inner & Outer Doors Replaced & Procedure OMM-001 Revised
page: https://kanterella.com/05000400/LER-2D1987-2D034-2C_-3Aon_870611-2Cair_Leakage_by_Inner_-26_Outer_Doors_of_Personnel_Air_Lock_Excessive.Caused_by_Flat_Spots_on_O-2Dring_Seal.Seals_on_Inner_-26_Outer_D…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-034, :on 870611,air Leakage by Inner & Outer Doors of Personnel Air Lock Excessive.Caused by Flat Spots on O-ring Seal.Seals on Inner & Outer Doors Replaced & Procedure OMM-001 Revised

LER-1987-024, :on 870421,heater Drain Pumps a & B Tripped Due to Low Differential Pressure & Automatic Turbine Runback Initiated.Caused by Oscillating Feedwater Heater Levels.Pump Low Level Trip Setpoint Lowered
type: Subject
label: 05000400/LER-1987-024, :on 870421,heater Drain Pumps a & B Tripped Due to Low Differential Pressure & Automatic Turbine Runback Initiated.Caused by Oscillating Feedwater Heater Levels.Pump Low Level Trip Setpoint Lowered
page: https://kanterella.com/05000400/LER-2D1987-2D024-2C_-3Aon_870421-2Cheater_Drain_Pumps_a_-26_B_Tripped_Due_to_Low_Differential_Pressure_-26_Automatic_Turbine_Runback_Initiated.Caused_by_Oscillating_Fee…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-024, :on 870421,heater Drain Pumps a & B Tripped Due to Low Differential Pressure & Automatic Turbine Runback Initiated.Caused by Oscillating Feedwater Heater Levels.Pump Low Level Trip Setpoint Lowered

LER-1987-011, :on 870307,breaker Tripped Open Causing de-energization of Auxiliary Bus 1E.Caused by Procedural Inadequacy.Defective PIC Card in Power Supply to LT-112 Relay Replaced & Procedure Revised
type: Subject
label: 05000400/LER-1987-011, :on 870307,breaker Tripped Open Causing de-energization of Auxiliary Bus 1E.Caused by Procedural Inadequacy.Defective PIC Card in Power Supply to LT-112 Relay Replaced & Procedure Revised
page: https://kanterella.com/05000400/LER-2D1987-2D011-2C_-3Aon_870307-2Cbreaker_Tripped_Open_Causing_de-2Denergization_of_Auxiliary_Bus_1E.Caused_by_Procedural_Inadequacy.Defective_PIC_Card_in_Power_Supply…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-011, :on 870307,breaker Tripped Open Causing de-energization of Auxiliary Bus 1E.Caused by Procedural Inadequacy.Defective PIC Card in Power Supply to LT-112 Relay Replaced & Procedure Revised

LER-1987-039, :on 870619,intermediate Range (IR) High Neutron Flux Trip Setpoint Found Out of Calibr.Caused by Previous Adjustment to IR Setpoints.New Scaling Currents for 25- Trip Incorporated Into Applicable Procedures
type: Subject
label: 05000400/LER-1987-039, :on 870619,intermediate Range (IR) High Neutron Flux Trip Setpoint Found Out of Calibr.Caused by Previous Adjustment to IR Setpoints.New Scaling Currents for 25% Trip Incorporated Into Applicable Procedures
page: https://kanterella.com/05000400/LER-2D1987-2D039-2C_-3Aon_870619-2Cintermediate_Range_-28IR-29_High_Neutron_Flux_Trip_Setpoint_Found_Out_of_Calibr.Caused_by_Previous_Adjustment_to_IR_Setpoints.New_Sca…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-039, :on 870619,intermediate Range (IR) High Neutron Flux Trip Setpoint Found Out of Calibr.Caused by Previous Adjustment to IR Setpoints.New Scaling Currents for 25% Trip Incorporated Into Applicable Procedures

LER-1987-013, :on 870313,plant Manually Tripped at 49- Power Due to Loss of Main Feedwater.Caused by High Discharge Pressure Spike of Condensate Booster Pumps.Feedwater Regulating Valves Stroked
type: Subject
label: 05000400/LER-1987-013, :on 870313,plant Manually Tripped at 49% Power Due to Loss of Main Feedwater.Caused by High Discharge Pressure Spike of Condensate Booster Pumps.Feedwater Regulating Valves Stroked
page: https://kanterella.com/05000400/LER-2D1987-2D013-2C_-3Aon_870313-2Cplant_Manually_Tripped_at_49-_Power_Due_to_Loss_of_Main_Feedwater.Caused_by_High_Discharge_Pressure_Spike_of_Condensate_Booster_Pumps…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-013, :on 870313,plant Manually Tripped at 49% Power Due to Loss of Main Feedwater.Caused by High Discharge Pressure Spike of Condensate Booster Pumps.Feedwater Regulating Valves Stroked

LER-1987-036, :on 870621,air Roll of 1A-SA Diesel Engine Not Performed within 4 to 8 H After Engine Shutdown.Caused by Marking in Test Procedure Step as Not Applicable.Engine Air Rolled.No Accumulation of Water Detected
type: Subject
label: 05000400/LER-1987-036, :on 870621,air Roll of 1A-SA Diesel Engine Not Performed within 4 to 8 H After Engine Shutdown.Caused by Marking in Test Procedure Step as Not Applicable.Engine Air Rolled.No Accumulation of Water Detected
page: https://kanterella.com/05000400/LER-2D1987-2D036-2C_-3Aon_870621-2Cair_Roll_of_1A-2DSA_Diesel_Engine_Not_Performed_within_4_to_8_H_After_Engine_Shutdown.Caused_by_Marking_in_Test_Procedure_Step_as_Not…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-036, :on 870621,air Roll of 1A-SA Diesel Engine Not Performed within 4 to 8 H After Engine Shutdown.Caused by Marking in Test Procedure Step as Not Applicable.Engine Air Rolled.No Accumulation of Water Detected

05000364/LER-1917-004, Regarding Turbine-Driven Auxiliary Feedwater Pump Steam Admission Valve Air Leak Resulted in a Condition Prohibited by Technical Specifications
type: Subject
page: https://kanterella.com/05000364/LER-2D1917-2D004-2C_Regarding_Turbine-2DDriven_Auxiliary_Feedwater_Pump_Steam_Admission_Valve_Air_Leak_Resulted_in_a_Condition_Prohibited_by_Technical_Specifications
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000364/LER-1917-004, Regarding Turbine-Driven Auxiliary Feedwater Pump Steam Admission Valve Air Leak Resulted in a Condition Prohibited by Technical Specifications

LER-1998-004-02, :on 980921,automatic Reactor Trip Occurred. Caused by Inadequate re-correlation of Intermediate Range Neutron Flux Instrumentation Reactor Trip Bistable. Enhanced Applicable Plant Procedures.With
type: Subject
label: 05000250/LER-1998-004-02, :on 980921,automatic Reactor Trip Occurred. Caused by Inadequate re-correlation of Intermediate Range Neutron Flux Instrumentation Reactor Trip Bistable. Enhanced Applicable Plant Procedures.With
page: https://kanterella.com/05000250/LER-2D1998-2D004-2D02-2C_-3Aon_980921-2Cautomatic_Reactor_Trip_Occurred._Caused_by_Inadequate_re-2Dcorrelation_of_Intermediate_Range_Neutron_Flux_Instrumentation_Reacto…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1998-004-02, :on 980921,automatic Reactor Trip Occurred. Caused by Inadequate re-correlation of Intermediate Range Neutron Flux Instrumentation Reactor Trip Bistable. Enhanced Applicable Plant Procedures.With

Shift Supervisor
type: Subject
label: 05000250/LER-1990-019, :on 901003,alarm Received on Control Room Annunciator X-7/6 Indicating Heat Tracing Trouble.Caused by Inadequate Work Control.Boric Acid Transfer Pumps Aligned & Event Discussed W/Shift Supervisor
page: https://kanterella.com/05000250/LER-2D1990-2D019-2C_-3Aon_901003-2Calarm_Received_on_Control_Room_Annunciator_X-2D7/6_Indicating_Heat_Tracing_Trouble.Caused_by_Inadequate_Work_Control.Boric_Acid_Trans…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1990-019, :on 901003,alarm Received on Control Room Annunciator X-7/6 Indicating Heat Tracing Trouble.Caused by Inadequate Work Control.Boric Acid Transfer Pumps Aligned & Event Discussed W/Shift Supervisor

05000251/LER-1990-007-02, :on 900726,component Cooling Water Pump 4A Automatically Started.Caused by Error Made by Nonlicensed Personnel.Pressure Controller PC-4-611 Recalibrated
type: Subject
page: https://kanterella.com/05000251/LER-2D1990-2D007-2D02-2C_-3Aon_900726-2Ccomponent_Cooling_Water_Pump_4A_Automatically_Started.Caused_by_Error_Made_by_Nonlicensed_Personnel.Pressure_Controller_PC-2D4-2…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1990-007-02, :on 900726,component Cooling Water Pump 4A Automatically Started.Caused by Error Made by Nonlicensed Personnel.Pressure Controller PC-4-611 Recalibrated

LER-1988-011-01, :on 880816,damage Occurred to Property in Excess of $2,000 Due to Spent Fuel Pool Leakage.Caused by Pump Failure Causing Vent Valve to Vibrate Open.Floor Drain Sys Cleaned.Pump & Oiler Repaired & Inspected
type: Subject
label: 05000251/LER-1988-011-01, :on 880816,damage Occurred to Property in Excess of $2,000 Due to Spent Fuel Pool Leakage.Caused by Pump Failure Causing Vent Valve to Vibrate Open.Floor Drain Sys Cleaned.Pump & Oiler Repaired & Inspected
page: https://kanterella.com/05000251/LER-2D1988-2D011-2D01-2C_-3Aon_880816-2Cdamage_Occurred_to_Property_in_Excess_of_-242-2C000_Due_to_Spent_Fuel_Pool_Leakage.Caused_by_Pump_Failure_Causing_Vent_Valve_to_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1988-011-01, :on 880816,damage Occurred to Property in Excess of $2,000 Due to Spent Fuel Pool Leakage.Caused by Pump Failure Causing Vent Valve to Vibrate Open.Floor Drain Sys Cleaned.Pump & Oiler Repaired & Inspected

LER-1989-005-01, :on 890215,auxiliary Feedwater Flow Automatically Initiated Following Attempt to Start Steam Generator Feedwater Pump.Caused by Wiring Error on Starting Circuit Relay.Wiring Error Corrected
type: Subject
label: 05000250/LER-1989-005-01, :on 890215,auxiliary Feedwater Flow Automatically Initiated Following Attempt to Start Steam Generator Feedwater Pump.Caused by Wiring Error on Starting Circuit Relay.Wiring Error Corrected
page: https://kanterella.com/05000250/LER-2D1989-2D005-2D01-2C_-3Aon_890215-2Cauxiliary_Feedwater_Flow_Automatically_Initiated_Following_Attempt_to_Start_Steam_Generator_Feedwater_Pump.Caused_by_Wiring_Erro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1989-005-01, :on 890215,auxiliary Feedwater Flow Automatically Initiated Following Attempt to Start Steam Generator Feedwater Pump.Caused by Wiring Error on Starting Circuit Relay.Wiring Error Corrected

LER-1988-013, :on 880707,discovered That Monthly Channel Functional Test Surveillance Procedure Did Not Check Sys Alarm.Caused by Personnel Error.Surveillance Procedure Corrected & Personnel Counseled
type: Subject
label: 05000250/LER-1988-013, :on 880707,discovered That Monthly Channel Functional Test Surveillance Procedure Did Not Check Sys Alarm.Caused by Personnel Error.Surveillance Procedure Corrected & Personnel Counseled
page: https://kanterella.com/05000250/LER-2D1988-2D013-2C_-3Aon_880707-2Cdiscovered_That_Monthly_Channel_Functional_Test_Surveillance_Procedure_Did_Not_Check_Sys_Alarm.Caused_by_Personnel_Error.Surveillance…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1988-013, :on 880707,discovered That Monthly Channel Functional Test Surveillance Procedure Did Not Check Sys Alarm.Caused by Personnel Error.Surveillance Procedure Corrected & Personnel Counseled

LER-1989-002, :on 890116,normal Plant Cooldown Initiated Due to Small Boundary Leak of Rcs.Caused by Transgranular Stress Corrosion Cracking in Mapping Sys Thimble Guide Tube J-12 & J-7.Guide Tubes Involved Repaired or Replaced
type: Subject
label: 05000250/LER-1989-002, :on 890116,normal Plant Cooldown Initiated Due to Small Boundary Leak of Rcs.Caused by Transgranular Stress Corrosion Cracking in Mapping Sys Thimble Guide Tube J-12 & J-7.Guide Tubes Involved Repaired or Replaced
page: https://kanterella.com/05000250/LER-2D1989-2D002-2C_-3Aon_890116-2Cnormal_Plant_Cooldown_Initiated_Due_to_Small_Boundary_Leak_of_Rcs.Caused_by_Transgranular_Stress_Corrosion_Cracking_in_Mapping_Sys_Th…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1989-002, :on 890116,normal Plant Cooldown Initiated Due to Small Boundary Leak of Rcs.Caused by Transgranular Stress Corrosion Cracking in Mapping Sys Thimble Guide Tube J-12 & J-7.Guide Tubes Involved Repaired or Replaced

LER-1987-010-02, :on 870522,emergency Diesel Generator auto-started During Testing of 4,160-volt Bus Undervoltage Protection Circuit.Caused by Personnel Error.Personnel Counseled & Procedure Revised
type: Subject
label: 05000251/LER-1987-010-02, :on 870522,emergency Diesel Generator auto-started During Testing of 4,160-volt Bus Undervoltage Protection Circuit.Caused by Personnel Error.Personnel Counseled & Procedure Revised
page: https://kanterella.com/05000251/LER-2D1987-2D010-2D02-2C_-3Aon_870522-2Cemergency_Diesel_Generator_auto-2Dstarted_During_Testing_of_4-2C160-2Dvolt_Bus_Undervoltage_Protection_Circuit.Caused_by_Personn…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1987-010-02, :on 870522,emergency Diesel Generator auto-started During Testing of 4,160-volt Bus Undervoltage Protection Circuit.Caused by Personnel Error.Personnel Counseled & Procedure Revised

LER-1987-015, :on 870522,design Basis Reconstitution Revealed Potential Loss of HVAC in Inverter & Battery Rooms.Caused by Mods to Original Plant Design.Maint & Insp Procedures Implemented for Air Conditioning Units
type: Subject
label: 05000250/LER-1987-015, :on 870522,design Basis Reconstitution Revealed Potential Loss of HVAC in Inverter & Battery Rooms.Caused by Mods to Original Plant Design.Maint & Insp Procedures Implemented for Air Conditioning Units
page: https://kanterella.com/05000250/LER-2D1987-2D015-2C_-3Aon_870522-2Cdesign_Basis_Reconstitution_Revealed_Potential_Loss_of_HVAC_in_Inverter_-26_Battery_Rooms.Caused_by_Mods_to_Original_Plant_Design.Mai…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1987-015, :on 870522,design Basis Reconstitution Revealed Potential Loss of HVAC in Inverter & Battery Rooms.Caused by Mods to Original Plant Design.Maint & Insp Procedures Implemented for Air Conditioning Units

LER-1987-025-01, :on 871012,containment Vent & Control Room Ventilation Isolation Actuated.Caused by High Levels of Rb-88 in Containment Following Unit Shutdown.Containment Activity Level Returned to Normal
type: Subject
label: 05000251/LER-1987-025-01, :on 871012,containment Vent & Control Room Ventilation Isolation Actuated.Caused by High Levels of Rb-88 in Containment Following Unit Shutdown.Containment Activity Level Returned to Normal
page: https://kanterella.com/05000251/LER-2D1987-2D025-2D01-2C_-3Aon_871012-2Ccontainment_Vent_-26_Control_Room_Ventilation_Isolation_Actuated.Caused_by_High_Levels_of_Rb-2D88_in_Containment_Following_Unit_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1987-025-01, :on 871012,containment Vent & Control Room Ventilation Isolation Actuated.Caused by High Levels of Rb-88 in Containment Following Unit Shutdown.Containment Activity Level Returned to Normal

No Visible Level Resulting in No Flow Path to Rcs. Caused by Design of Boric Acid Transfer Pump Double Seals. Review Continuing for Alternate Seal Design
type: Subject
label: 05000251/LER-1989-009-01, :on 890823,boric Acid Transfer Pump Seal Pot Found W/No Visible Level Resulting in No Flow Path to Rcs. Caused by Design of Boric Acid Transfer Pump Double Seals. Review Continuing for Alternate Seal Design
page: https://kanterella.com/05000251/LER-2D1989-2D009-2D01-2C_-3Aon_890823-2Cboric_Acid_Transfer_Pump_Seal_Pot_Found_W/No_Visible_Level_Resulting_in_No_Flow_Path_to_Rcs._Caused_by_Design_of_Boric_Acid_Tran…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1989-009-01, :on 890823,boric Acid Transfer Pump Seal Pot Found W/No Visible Level Resulting in No Flow Path to Rcs. Caused by Design of Boric Acid Transfer Pump Double Seals. Review Continuing for Alternate Seal Design

05000250/LER-1988-027, :on 881006,mechanic Found to Be Contaminated When Exiting Containment Bldg.Specific Cause Unidentified. Addl Temporary Controls Implemented & Area Mopped
type: Subject
page: https://kanterella.com/05000250/LER-2D1988-2D027-2C_-3Aon_881006-2Cmechanic_Found_to_Be_Contaminated_When_Exiting_Containment_Bldg.Specific_Cause_Unidentified._Addl_Temporary_Controls_Implemented_-26_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1988-027, :on 881006,mechanic Found to Be Contaminated When Exiting Containment Bldg.Specific Cause Unidentified. Addl Temporary Controls Implemented & Area Mopped

LER-1989-008, :on 890320,heat Trace Circuits 8A & 8B on Suction Lines of Boric Acid Transfer Pump Declared Out of Svc.Possibly Caused by Leaking Isolation Valve.Isolation Valve Disassembled for Insp
type: Subject
label: 05000250/LER-1989-008, :on 890320,heat Trace Circuits 8A & 8B on Suction Lines of Boric Acid Transfer Pump Declared Out of Svc.Possibly Caused by Leaking Isolation Valve.Isolation Valve Disassembled for Insp
page: https://kanterella.com/05000250/LER-2D1989-2D008-2C_-3Aon_890320-2Cheat_Trace_Circuits_8A_-26_8B_on_Suction_Lines_of_Boric_Acid_Transfer_Pump_Declared_Out_of_Svc.Possibly_Caused_by_Leaking_Isolation_V…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1989-008, :on 890320,heat Trace Circuits 8A & 8B on Suction Lines of Boric Acid Transfer Pump Declared Out of Svc.Possibly Caused by Leaking Isolation Valve.Isolation Valve Disassembled for Insp

LER-1988-012-01, :on 880905,control Rod K-12 Dropped from 228 Steps to 0 Step,Causing Turbine Runback to 60- Power.Cause of Drop Under Investigation.Insp of Control Rod K-12 Will Be Performed During Current Refueling Outage
type: Subject
label: 05000251/LER-1988-012-01, :on 880905,control Rod K-12 Dropped from 228 Steps to 0 Step,Causing Turbine Runback to 60% Power.Cause of Drop Under Investigation.Insp of Control Rod K-12 Will Be Performed During Current Refueling Outage
page: https://kanterella.com/05000251/LER-2D1988-2D012-2D01-2C_-3Aon_880905-2Ccontrol_Rod_K-2D12_Dropped_from_228_Steps_to_0_Step-2CCausing_Turbine_Runback_to_60-_Power.Cause_of_Drop_Under_Investigation.Ins…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1988-012-01, :on 880905,control Rod K-12 Dropped from 228 Steps to 0 Step,Causing Turbine Runback to 60% Power.Cause of Drop Under Investigation.Insp of Control Rod K-12 Will Be Performed During Current Refueling Outage

LER-1988-023, :on 880926,chemistry Technician Reported That There Was No Flow Indication to Plant Process Radiation Monitor R-19.Caused by Solids from Steam Generator Blowdown. Sample Flows to R-19 Will Be Monitored
type: Subject
label: 05000250/LER-1988-023, :on 880926,chemistry Technician Reported That There Was No Flow Indication to Plant Process Radiation Monitor R-19.Caused by Solids from Steam Generator Blowdown. Sample Flows to R-19 Will Be Monitored
page: https://kanterella.com/05000250/LER-2D1988-2D023-2C_-3Aon_880926-2Cchemistry_Technician_Reported_That_There_Was_No_Flow_Indication_to_Plant_Process_Radiation_Monitor_R-2D19.Caused_by_Solids_from_Steam…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1988-023, :on 880926,chemistry Technician Reported That There Was No Flow Indication to Plant Process Radiation Monitor R-19.Caused by Solids from Steam Generator Blowdown. Sample Flows to R-19 Will Be Monitored

LER-1988-025, :on 881013,determined That Potential Interaction Existed Between Emergency Diesel Generator Pump Control Sys Which Could Have Prevented Fulfillment of Safety Function.Caused by Inadequate Design
type: Subject
label: 05000250/LER-1988-025, :on 881013,determined That Potential Interaction Existed Between Emergency Diesel Generator Pump Control Sys Which Could Have Prevented Fulfillment of Safety Function.Caused by Inadequate Design
page: https://kanterella.com/05000250/LER-2D1988-2D025-2C_-3Aon_881013-2Cdetermined_That_Potential_Interaction_Existed_Between_Emergency_Diesel_Generator_Pump_Control_Sys_Which_Could_Have_Prevented_Fulfillm…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1988-025, :on 881013,determined That Potential Interaction Existed Between Emergency Diesel Generator Pump Control Sys Which Could Have Prevented Fulfillment of Safety Function.Caused by Inadequate Design

LER-1988-019, :on 880822,boric Acid Transfer Pump 3A Declared out-of-svc.Caused by Lack of Visible Water Level & Zero Nitrogen Pressure in Seal Pot & Failure of Pump Seal.Seal Replaced & Pump Returned to Svc
type: Subject
label: 05000250/LER-1988-019, :on 880822,boric Acid Transfer Pump 3A Declared out-of-svc.Caused by Lack of Visible Water Level & Zero Nitrogen Pressure in Seal Pot & Failure of Pump Seal.Seal Replaced & Pump Returned to Svc
page: https://kanterella.com/05000250/LER-2D1988-2D019-2C_-3Aon_880822-2Cboric_Acid_Transfer_Pump_3A_Declared_out-2Dof-2Dsvc.Caused_by_Lack_of_Visible_Water_Level_-26_Zero_Nitrogen_Pressure_in_Seal_Pot_-26_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1988-019, :on 880822,boric Acid Transfer Pump 3A Declared out-of-svc.Caused by Lack of Visible Water Level & Zero Nitrogen Pressure in Seal Pot & Failure of Pump Seal.Seal Replaced & Pump Returned to Svc

LER-1988-008, :on 880613,flowpath Which Could Result in Insufficient NPSH to Certain Pumps During LOCA Recirculation Identified.Procedures Revised to Maintain Valve 887 Locked in Fully Open Position
type: Subject
label: 05000250/LER-1988-008, :on 880613,flowpath Which Could Result in Insufficient NPSH to Certain Pumps During LOCA Recirculation Identified.Procedures Revised to Maintain Valve 887 Locked in Fully Open Position
page: https://kanterella.com/05000250/LER-2D1988-2D008-2C_-3Aon_880613-2Cflowpath_Which_Could_Result_in_Insufficient_NPSH_to_Certain_Pumps_During_LOCA_Recirculation_Identified.Procedures_Revised_to_Maintain…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1988-008, :on 880613,flowpath Which Could Result in Insufficient NPSH to Certain Pumps During LOCA Recirculation Identified.Procedures Revised to Maintain Valve 887 Locked in Fully Open Position

4A2 in Undervoltage Protection Scheme for 4A 480 Volt Load Ctr. Relays Replaced & Tested
type: Subject
label: 05000251/LER-1988-004-02, :on 880408,Tech Spec Table 3.5-2 Requirements Exceeded.Caused by Failure of Relays 327TX/4A2 & 327TX/4A2 in Undervoltage Protection Scheme for 4A 480 Volt Load Ctr. Relays Replaced & Tested
page: https://kanterella.com/05000251/LER-2D1988-2D004-2D02-2C_-3Aon_880408-2CTech_Spec_Table_3.5-2D2_Requirements_Exceeded.Caused_by_Failure_of_Relays_327TX/4A2_-26_327TX/4A2_in_Undervoltage_Protection_Sch…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1988-004-02, :on 880408,Tech Spec Table 3.5-2 Requirements Exceeded.Caused by Failure of Relays 327TX/4A2 & 327TX/4A2 in Undervoltage Protection Scheme for 4A 480 Volt Load Ctr. Relays Replaced & Tested

LER-1988-016, :on 880811,containment Spray Pump out-of-svc for Maint Exceeding Tech Specs Limits.Caused by Lack of Knowledge Re Need for break-in Period for New Bearings. Training Procedures to Be Revised
type: Subject
label: 05000250/LER-1988-016, :on 880811,containment Spray Pump out-of-svc for Maint Exceeding Tech Specs Limits.Caused by Lack of Knowledge Re Need for break-in Period for New Bearings. Training Procedures to Be Revised
page: https://kanterella.com/05000250/LER-2D1988-2D016-2C_-3Aon_880811-2Ccontainment_Spray_Pump_out-2Dof-2Dsvc_for_Maint_Exceeding_Tech_Specs_Limits.Caused_by_Lack_of_Knowledge_Re_Need_for_break-2Din_Period…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1988-016, :on 880811,containment Spray Pump out-of-svc for Maint Exceeding Tech Specs Limits.Caused by Lack of Knowledge Re Need for break-in Period for New Bearings. Training Procedures to Be Revised

LER-1987-026-01, :on 871121,component Cooling Water (CCW) Pump 4B Autostarted During CCW Pump 4C Return to Svc.Caused by Insufficient Margin Between Operating & Setpoint Pressures.Increased Margin Initiated
type: Subject
label: 05000251/LER-1987-026-01, :on 871121,component Cooling Water (CCW) Pump 4B Autostarted During CCW Pump 4C Return to Svc.Caused by Insufficient Margin Between Operating & Setpoint Pressures.Increased Margin Initiated
page: https://kanterella.com/05000251/LER-2D1987-2D026-2D01-2C_-3Aon_871121-2Ccomponent_Cooling_Water_-28CCW-29_Pump_4B_Autostarted_During_CCW_Pump_4C_Return_to_Svc.Caused_by_Insufficient_Margin_Between_Ope…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1987-026-01, :on 871121,component Cooling Water (CCW) Pump 4B Autostarted During CCW Pump 4C Return to Svc.Caused by Insufficient Margin Between Operating & Setpoint Pressures.Increased Margin Initiated

LER-1987-014-01, :on 870711,dripping from Auxiliary Feedwater Steam Line Discovered.On 870714,leak Identified as Pinhole on Reducer.Cause Unknown.Fitting & Portion of Adjacent Piping Removed for Analysis
type: Subject
label: 05000251/LER-1987-014-01, :on 870711,dripping from Auxiliary Feedwater Steam Line Discovered.On 870714,leak Identified as Pinhole on Reducer.Cause Unknown.Fitting & Portion of Adjacent Piping Removed for Analysis
page: https://kanterella.com/05000251/LER-2D1987-2D014-2D01-2C_-3Aon_870711-2Cdripping_from_Auxiliary_Feedwater_Steam_Line_Discovered.On_870714-2Cleak_Identified_as_Pinhole_on_Reducer.Cause_Unknown.Fitting_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1987-014-01, :on 870711,dripping from Auxiliary Feedwater Steam Line Discovered.On 870714,leak Identified as Pinhole on Reducer.Cause Unknown.Fitting & Portion of Adjacent Piping Removed for Analysis

LER-1987-015-01, :on 870715,technicians Failed to Deactivate Inoperable Containment Isolation Valve within 4 H as Required by Tech Specs.Caused by Personnel Error.Procedure Completion Responsibility Centralized
type: Subject
label: 05000251/LER-1987-015-01, :on 870715,technicians Failed to Deactivate Inoperable Containment Isolation Valve within 4 H as Required by Tech Specs.Caused by Personnel Error.Procedure Completion Responsibility Centralized
page: https://kanterella.com/05000251/LER-2D1987-2D015-2D01-2C_-3Aon_870715-2Ctechnicians_Failed_to_Deactivate_Inoperable_Containment_Isolation_Valve_within_4_H_as_Required_by_Tech_Specs.Caused_by_Personnel…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1987-015-01, :on 870715,technicians Failed to Deactivate Inoperable Containment Isolation Valve within 4 H as Required by Tech Specs.Caused by Personnel Error.Procedure Completion Responsibility Centralized

LER-1987-012-02, :on 870705,during Unit 3 Engineered Safeguards Integration Test,Auto Start of Component Cooling Water Pump 4B Occurred.Caused by Low Header Pressure on Increased Cooling Water Flow.Procedure Will Be Enhanced
type: Subject
label: 05000251/LER-1987-012-02, :on 870705,during Unit 3 Engineered Safeguards Integration Test,Auto Start of Component Cooling Water Pump 4B Occurred.Caused by Low Header Pressure on Increased Cooling Water Flow.Procedure Will Be Enhanced
page: https://kanterella.com/05000251/LER-2D1987-2D012-2D02-2C_-3Aon_870705-2Cduring_Unit_3_Engineered_Safeguards_Integration_Test-2CAuto_Start_of_Component_Cooling_Water_Pump_4B_Occurred.Caused_by_Low_Head…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1987-012-02, :on 870705,during Unit 3 Engineered Safeguards Integration Test,Auto Start of Component Cooling Water Pump 4B Occurred.Caused by Low Header Pressure on Increased Cooling Water Flow.Procedure Will Be Enhanced

LER-1987-034, :on 871229,manual Reactor Trip from Approx 70- Reactor Power Occurred,Caused by Stuck Contacts on Overspeed Controller 20- Underpower Relay.Contacts Freed & Cleaned. Inputs to Relay Satisfactorily Calibr
type: Subject
label: 05000250/LER-1987-034, :on 871229,manual Reactor Trip from Approx 70% Reactor Power Occurred,Caused by Stuck Contacts on Overspeed Controller 20% Underpower Relay.Contacts Freed & Cleaned. Inputs to Relay Satisfactorily Calibr
page: https://kanterella.com/05000250/LER-2D1987-2D034-2C_-3Aon_871229-2Cmanual_Reactor_Trip_from_Approx_70-_Reactor_Power_Occurred-2CCaused_by_Stuck_Contacts_on_Overspeed_Controller_20-_Underpower_Relay.Co…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1987-034, :on 871229,manual Reactor Trip from Approx 70% Reactor Power Occurred,Caused by Stuck Contacts on Overspeed Controller 20% Underpower Relay.Contacts Freed & Cleaned. Inputs to Relay Satisfactorily Calibr

LER-1987-023, :on 870913,safety Injection Sys Actuation & Subsequent Reactor Trip Occurred.Caused by Component Failure & Personnel Error.Event Response Team Formed to Investigate Causes & Initiate Corrective Action
type: Subject
label: 05000250/LER-1987-023, :on 870913,safety Injection Sys Actuation & Subsequent Reactor Trip Occurred.Caused by Component Failure & Personnel Error.Event Response Team Formed to Investigate Causes & Initiate Corrective Action
page: https://kanterella.com/05000250/LER-2D1987-2D023-2C_-3Aon_870913-2Csafety_Injection_Sys_Actuation_-26_Subsequent_Reactor_Trip_Occurred.Caused_by_Component_Failure_-26_Personnel_Error.Event_Response_Te…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1987-023, :on 870913,safety Injection Sys Actuation & Subsequent Reactor Trip Occurred.Caused by Component Failure & Personnel Error.Event Response Team Formed to Investigate Causes & Initiate Corrective Action

LER-1987-019-01, :on 870712,turbine Runback from 89- Reactor Power to 84- Reactor Power Occurred.Caused by Spurious Spike in Rod Position Indication Sys.Faulty Solder Joint Repaired & Signal Conditioners Inspected
type: Subject
label: 05000251/LER-1987-019-01, :on 870712,turbine Runback from 89% Reactor Power to 84% Reactor Power Occurred.Caused by Spurious Spike in Rod Position Indication Sys.Faulty Solder Joint Repaired & Signal Conditioners Inspected
page: https://kanterella.com/05000251/LER-2D1987-2D019-2D01-2C_-3Aon_870712-2Cturbine_Runback_from_89-_Reactor_Power_to_84-_Reactor_Power_Occurred.Caused_by_Spurious_Spike_in_Rod_Position_Indication_Sys.Fau…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000251/LER-1987-019-01, :on 870712,turbine Runback from 89% Reactor Power to 84% Reactor Power Occurred.Caused by Spurious Spike in Rod Position Indication Sys.Faulty Solder Joint Repaired & Signal Conditioners Inspected

870831 1tr
type: Subject
label: 05000250/LER-1987-022, :on 870731,operator Demonstrated Known Spurious & Spiking Problem in Nuclear Instrumentation Sys Intermediate Range Channels,By Opening Drawer for Sys. Caused by Faulty Locking mechanism.W/870831 1tr
page: https://kanterella.com/05000250/LER-2D1987-2D022-2C_-3Aon_870731-2Coperator_Demonstrated_Known_Spurious_-26_Spiking_Problem_in_Nuclear_Instrumentation_Sys_Intermediate_Range_Channels-2CBy_Opening_Draw…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1987-022, :on 870731,operator Demonstrated Known Spurious & Spiking Problem in Nuclear Instrumentation Sys Intermediate Range Channels,By Opening Drawer for Sys. Caused by Faulty Locking mechanism.W/870831 1tr

05000315/LER-1987-004, :on 870408,unit Shut Down Due to Unidentified RCS Leakage Per Tech Spec 3.4.6.2.Caused by Leakage Greater than 1 Gpm from Letdown Isolation Valve.Leakage Sources Repaired
type: Subject
page: https://kanterella.com/05000315/LER-2D1987-2D004-2C_-3Aon_870408-2Cunit_Shut_Down_Due_to_Unidentified_RCS_Leakage_Per_Tech_Spec_3.4.6.2.Caused_by_Leakage_Greater_than_1_Gpm_from_Letdown_Isolation_Valv…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1987-004, :on 870408,unit Shut Down Due to Unidentified RCS Leakage Per Tech Spec 3.4.6.2.Caused by Leakage Greater than 1 Gpm from Letdown Isolation Valve.Leakage Sources Repaired

LER-1988-001, :on 880106,Tech Spec 3.3.3.10 Discovered Not Met for 871230-880106 Due to Discovery of Incorrect Lineup for Radiation Monitor VRS-2500.Caused by Personnel Error. Flow Restored to Monitor & Lineup Verified
type: Subject
label: 05000316/LER-1988-001, :on 880106,Tech Spec 3.3.3.10 Discovered Not Met for 871230-880106 Due to Discovery of Incorrect Lineup for Radiation Monitor VRS-2500.Caused by Personnel Error. Flow Restored to Monitor & Lineup Verified
page: https://kanterella.com/05000316/LER-2D1988-2D001-2C_-3Aon_880106-2CTech_Spec_3.3.3.10_Discovered_Not_Met_for_871230-2D880106_Due_to_Discovery_of_Incorrect_Lineup_for_Radiation_Monitor_VRS-2D2500.Cause…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1988-001, :on 880106,Tech Spec 3.3.3.10 Discovered Not Met for 871230-880106 Due to Discovery of Incorrect Lineup for Radiation Monitor VRS-2500.Caused by Personnel Error. Flow Restored to Monitor & Lineup Verified

LER-1987-008-01, :on 870722,ESF Actuation Occurred Due to Extreme High Level in Steam Generator 24.Caused by Erratic Response of Main Feedwater Pump Delta P Controller. Plant Procedures Implemented
type: Subject
label: 05000316/LER-1987-008-01, :on 870722,ESF Actuation Occurred Due to Extreme High Level in Steam Generator 24.Caused by Erratic Response of Main Feedwater Pump Delta P Controller. Plant Procedures Implemented
page: https://kanterella.com/05000316/LER-2D1987-2D008-2D01-2C_-3Aon_870722-2CESF_Actuation_Occurred_Due_to_Extreme_High_Level_in_Steam_Generator_24.Caused_by_Erratic_Response_of_Main_Feedwater_Pump_Delta_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-008-01, :on 870722,ESF Actuation Occurred Due to Extreme High Level in Steam Generator 24.Caused by Erratic Response of Main Feedwater Pump Delta P Controller. Plant Procedures Implemented

LER-1994-006-01, :on 940906,six MSSVs Failed to Meet TS Lift Setpoint Requirements.Caused by Galling Between Valve Disk & Nozzle.Nrr Issued TS Amend 167 to Unit 2 Ts,Increasing MSSV Tolerance on 940909
type: Subject
label: 05000316/LER-1994-006-01, :on 940906,six MSSVs Failed to Meet TS Lift Setpoint Requirements.Caused by Galling Between Valve Disk & Nozzle.Nrr Issued TS Amend 167 to Unit 2 Ts,Increasing MSSV Tolerance on 940909
page: https://kanterella.com/05000316/LER-2D1994-2D006-2D01-2C_-3Aon_940906-2Csix_MSSVs_Failed_to_Meet_TS_Lift_Setpoint_Requirements.Caused_by_Galling_Between_Valve_Disk_-26_Nozzle.Nrr_Issued_TS_Amend_167_t…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1994-006-01, :on 940906,six MSSVs Failed to Meet TS Lift Setpoint Requirements.Caused by Galling Between Valve Disk & Nozzle.Nrr Issued TS Amend 167 to Unit 2 Ts,Increasing MSSV Tolerance on 940909

LER-1994-007, :on 940909,containment Type B & C Leakage Exceeded LCO Value Due to Leakage of Post Accident Sample Line Check Valve.Containment Isolation Valves Exhibiting Excessive Leakrates Repaired & Retested
type: Subject
label: 05000316/LER-1994-007, :on 940909,containment Type B & C Leakage Exceeded LCO Value Due to Leakage of Post Accident Sample Line Check Valve.Containment Isolation Valves Exhibiting Excessive Leakrates Repaired & Retested
page: https://kanterella.com/05000316/LER-2D1994-2D007-2C_-3Aon_940909-2Ccontainment_Type_B_-26_C_Leakage_Exceeded_LCO_Value_Due_to_Leakage_of_Post_Accident_Sample_Line_Check_Valve.Containment_Isolation_Val…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1994-007, :on 940909,containment Type B & C Leakage Exceeded LCO Value Due to Leakage of Post Accident Sample Line Check Valve.Containment Isolation Valves Exhibiting Excessive Leakrates Repaired & Retested

LER-1994-001, :on 940203,04 & 05,13 of 20 MSSVs Lift Settings Found Out of Tolerance.Caused by Mild Galling Between Disk & Nozzle Components.Valve Mfg Recommended That Nozzle & Disc Seatingsurfaces Have Grey Matt Finish
type: Subject
label: 05000315/LER-1994-001, :on 940203,04 & 05,13 of 20 MSSVs Lift Settings Found Out of Tolerance.Caused by Mild Galling Between Disk & Nozzle Components.Valve Mfg Recommended That Nozzle & Disc Seatingsurfaces Have Grey Matt Finish
page: https://kanterella.com/05000315/LER-2D1994-2D001-2C_-3Aon_940203-2C04_-26_05-2C13_of_20_MSSVs_Lift_Settings_Found_Out_of_Tolerance.Caused_by_Mild_Galling_Between_Disk_-26_Nozzle_Components.Valve_Mfg_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1994-001, :on 940203,04 & 05,13 of 20 MSSVs Lift Settings Found Out of Tolerance.Caused by Mild Galling Between Disk & Nozzle Components.Valve Mfg Recommended That Nozzle & Disc Seatingsurfaces Have Grey Matt Finish

05000316/LER-1993-006, :on 930709,TS 72 H LCO Action Statement Exceeded Due to Time Required for Repair of Charging Pump. Charging Pump Rotor Assembly Removed & Rebuilt Assembly Installed
type: Subject
page: https://kanterella.com/05000316/LER-2D1993-2D006-2C_-3Aon_930709-2CTS_72_H_LCO_Action_Statement_Exceeded_Due_to_Time_Required_for_Repair_of_Charging_Pump._Charging_Pump_Rotor_Assembly_Removed_-26_Rebu…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1993-006, :on 930709,TS 72 H LCO Action Statement Exceeded Due to Time Required for Repair of Charging Pump. Charging Pump Rotor Assembly Removed & Rebuilt Assembly Installed

LER-1992-007, :on 920705,accumulated Leakage for Type B & C Leakrate Tests on Containment Penetrations Exceeded TS Lco. Caused by Scale on Valve Seat & Small Crack in Surface of Neoprene Seat.Stop Nuts Adjusted
type: Subject
label: 05000315/LER-1992-007, :on 920705,accumulated Leakage for Type B & C Leakrate Tests on Containment Penetrations Exceeded TS Lco. Caused by Scale on Valve Seat & Small Crack in Surface of Neoprene Seat.Stop Nuts Adjusted
page: https://kanterella.com/05000315/LER-2D1992-2D007-2C_-3Aon_920705-2Caccumulated_Leakage_for_Type_B_-26_C_Leakrate_Tests_on_Containment_Penetrations_Exceeded_TS_Lco._Caused_by_Scale_on_Valve_Seat_-26_Sm…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1992-007, :on 920705,accumulated Leakage for Type B & C Leakrate Tests on Containment Penetrations Exceeded TS Lco. Caused by Scale on Valve Seat & Small Crack in Surface of Neoprene Seat.Stop Nuts Adjusted

10CFR50,App R.Minor Plant Mod Initiated to Provide Encl (Wrapped) Around Subj Conduit
type: Subject
label: 05000315/LER-1990-010, :on 900824,discovered That Routing Cable Associated W/Unit 1 Low Shutdown Indication Panels Not in Compliance w/10CFR50,App R.Minor Plant Mod Initiated to Provide Encl (Wrapped) Around Subj Conduit
page: https://kanterella.com/05000315/LER-2D1990-2D010-2C_-3Aon_900824-2Cdiscovered_That_Routing_Cable_Associated_W/Unit_1_Low_Shutdown_Indication_Panels_Not_in_Compliance_w/10CFR50-2CApp_R.Minor_Plant_Mod_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1990-010, :on 900824,discovered That Routing Cable Associated W/Unit 1 Low Shutdown Indication Panels Not in Compliance w/10CFR50,App R.Minor Plant Mod Initiated to Provide Encl (Wrapped) Around Subj Conduit

LER-1993-004, :on 930408,rod Position Indication for Rods H-12 & M-8 Found Indicating Greater than 12 Steps from Demand Position Indication.Caused by Transformer Sensitivity to Temp Changes.Position Verified
type: Subject
label: 05000316/LER-1993-004, :on 930408,rod Position Indication for Rods H-12 & M-8 Found Indicating Greater than 12 Steps from Demand Position Indication.Caused by Transformer Sensitivity to Temp Changes.Position Verified
page: https://kanterella.com/05000316/LER-2D1993-2D004-2C_-3Aon_930408-2Crod_Position_Indication_for_Rods_H-2D12_-26_M-2D8_Found_Indicating_Greater_than_12_Steps_from_Demand_Position_Indication.Caused_by_Tr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1993-004, :on 930408,rod Position Indication for Rods H-12 & M-8 Found Indicating Greater than 12 Steps from Demand Position Indication.Caused by Transformer Sensitivity to Temp Changes.Position Verified

05000315/LER-1990-015, :on 901102,discovered Containment Type B & C Leakage Exceeded L.C.O. Value Due to Degradation of Isolation Valve Seating Surfaces.Seat Was Lapped & Disc Was Replaced
type: Subject
page: https://kanterella.com/05000315/LER-2D1990-2D015-2C_-3Aon_901102-2Cdiscovered_Containment_Type_B_-26_C_Leakage_Exceeded_L.C.O._Value_Due_to_Degradation_of_Isolation_Valve_Seating_Surfaces.Seat_Was_Lap…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1990-015, :on 901102,discovered Containment Type B & C Leakage Exceeded L.C.O. Value Due to Degradation of Isolation Valve Seating Surfaces.Seat Was Lapped & Disc Was Replaced

LER-1992-008, :on 920805,spent Fuel Exhaust Ventilation Sys Declared Inoperable Due to Unacceptable Leakage Around Charcoal Absorber.Caused by Aging & Lost of Pliability of Seal Matl.Matl Replaced & Sys Returned to Svc
type: Subject
label: 05000315/LER-1992-008, :on 920805,spent Fuel Exhaust Ventilation Sys Declared Inoperable Due to Unacceptable Leakage Around Charcoal Absorber.Caused by Aging & Lost of Pliability of Seal Matl.Matl Replaced & Sys Returned to Svc
page: https://kanterella.com/05000315/LER-2D1992-2D008-2C_-3Aon_920805-2Cspent_Fuel_Exhaust_Ventilation_Sys_Declared_Inoperable_Due_to_Unacceptable_Leakage_Around_Charcoal_Absorber.Caused_by_Aging_-26_Lost_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1992-008, :on 920805,spent Fuel Exhaust Ventilation Sys Declared Inoperable Due to Unacceptable Leakage Around Charcoal Absorber.Caused by Aging & Lost of Pliability of Seal Matl.Matl Replaced & Sys Returned to Svc

LER-1993-003, :on 921016,discovered That Charcoal Filter Face Dampers Were Closed Instead of Open as Indicated.Caused by Incorrect Solenoid Installation.Procedures Revised & Dampers Verified to Be Installed Correctly
type: Subject
label: 05000316/LER-1993-003, :on 921016,discovered That Charcoal Filter Face Dampers Were Closed Instead of Open as Indicated.Caused by Incorrect Solenoid Installation.Procedures Revised & Dampers Verified to Be Installed Correctly
page: https://kanterella.com/05000316/LER-2D1993-2D003-2C_-3Aon_921016-2Cdiscovered_That_Charcoal_Filter_Face_Dampers_Were_Closed_Instead_of_Open_as_Indicated.Caused_by_Incorrect_Solenoid_Installation.Proce…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1993-003, :on 921016,discovered That Charcoal Filter Face Dampers Were Closed Instead of Open as Indicated.Caused by Incorrect Solenoid Installation.Procedures Revised & Dampers Verified to Be Installed Correctly

LER-1992-006-02, :on 920618 & 19,10 of 20 Main Steam Safety Valve Lift Settings Found Outside of TS Tolerances.Caused by Setpoint Drift.Valves Reset to Acceptable Values & Retested Satisfactorily
type: Subject
label: 05000315/LER-1992-006-02, :on 920618 & 19,10 of 20 Main Steam Safety Valve Lift Settings Found Outside of TS Tolerances.Caused by Setpoint Drift.Valves Reset to Acceptable Values & Retested Satisfactorily
page: https://kanterella.com/05000315/LER-2D1992-2D006-2D02-2C_-3Aon_920618_-26_19-2C10_of_20_Main_Steam_Safety_Valve_Lift_Settings_Found_Outside_of_TS_Tolerances.Caused_by_Setpoint_Drift.Valves_Reset_to_Ac…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1992-006-02, :on 920618 & 19,10 of 20 Main Steam Safety Valve Lift Settings Found Outside of TS Tolerances.Caused by Setpoint Drift.Valves Reset to Acceptable Values & Retested Satisfactorily

LER-1992-003, :on 920219,20 & 21,7 of 20 Main Steam Safety Valve Lift Setting Found Outside of TS Established Limits. Caused by Setpoint Drift.Setpoint Ranges Reset & Maint Procedure for Valve Repair Revised
type: Subject
label: 05000316/LER-1992-003, :on 920219,20 & 21,7 of 20 Main Steam Safety Valve Lift Setting Found Outside of TS Established Limits. Caused by Setpoint Drift.Setpoint Ranges Reset & Maint Procedure for Valve Repair Revised
page: https://kanterella.com/05000316/LER-2D1992-2D003-2C_-3Aon_920219-2C20_-26_21-2C7_of_20_Main_Steam_Safety_Valve_Lift_Setting_Found_Outside_of_TS_Established_Limits._Caused_by_Setpoint_Drift.Setpoint_Ra…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1992-003, :on 920219,20 & 21,7 of 20 Main Steam Safety Valve Lift Setting Found Outside of TS Established Limits. Caused by Setpoint Drift.Setpoint Ranges Reset & Maint Procedure for Valve Repair Revised

LER-1992-011, :on 920917,identified That Post Accident Containment Hydrogen Monitoring Sys Operability Per License Commitments Could Not Be Assured.Caused by Inadequate Evaluation.Plant Modification Initiated
type: Subject
label: 05000315/LER-1992-011, :on 920917,identified That Post Accident Containment Hydrogen Monitoring Sys Operability Per License Commitments Could Not Be Assured.Caused by Inadequate Evaluation.Plant Modification Initiated
page: https://kanterella.com/05000315/LER-2D1992-2D011-2C_-3Aon_920917-2Cidentified_That_Post_Accident_Containment_Hydrogen_Monitoring_Sys_Operability_Per_License_Commitments_Could_Not_Be_Assured.Caused_by_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1992-011, :on 920917,identified That Post Accident Containment Hydrogen Monitoring Sys Operability Per License Commitments Could Not Be Assured.Caused by Inadequate Evaluation.Plant Modification Initiated

LER-1990-016, :on 901221,determined That Two of Three Safety Valves Had Lift Settings Outside TS 4.4.3 Acceptance Criteria.Possibly Caused by Steam Cutting in Disc Insert & Nozzle.Valves Satisfactorily Tested
type: Subject
label: 05000315/LER-1990-016, :on 901221,determined That Two of Three Safety Valves Had Lift Settings Outside TS 4.4.3 Acceptance Criteria.Possibly Caused by Steam Cutting in Disc Insert & Nozzle.Valves Satisfactorily Tested
page: https://kanterella.com/05000315/LER-2D1990-2D016-2C_-3Aon_901221-2Cdetermined_That_Two_of_Three_Safety_Valves_Had_Lift_Settings_Outside_TS_4.4.3_Acceptance_Criteria.Possibly_Caused_by_Steam_Cutting_in…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1990-016, :on 901221,determined That Two of Three Safety Valves Had Lift Settings Outside TS 4.4.3 Acceptance Criteria.Possibly Caused by Steam Cutting in Disc Insert & Nozzle.Valves Satisfactorily Tested

LER-1992-008-01, :on 920928,EDG Tripped on lo-lo Lube Oil Pressure 24 After Start.Caused by Abnormally Low Level of Oil in Lube Oil Sump Tank.Tank Level Restored to Normal Operating Range & Mechanical Seal Replaced
type: Subject
label: 05000316/LER-1992-008-01, :on 920928,EDG Tripped on lo-lo Lube Oil Pressure 24 After Start.Caused by Abnormally Low Level of Oil in Lube Oil Sump Tank.Tank Level Restored to Normal Operating Range & Mechanical Seal Replaced
page: https://kanterella.com/05000316/LER-2D1992-2D008-2D01-2C_-3Aon_920928-2CEDG_Tripped_on_lo-2Dlo_Lube_Oil_Pressure_24_After_Start.Caused_by_Abnormally_Low_Level_of_Oil_in_Lube_Oil_Sump_Tank.Tank_Level_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1992-008-01, :on 920928,EDG Tripped on lo-lo Lube Oil Pressure 24 After Start.Caused by Abnormally Low Level of Oil in Lube Oil Sump Tank.Tank Level Restored to Normal Operating Range & Mechanical Seal Replaced

05000315/LER-1990-012, :on 901015,failed to Comply W/Tech Spec When Fire Watch Posting Miscommunicated
type: Subject
page: https://kanterella.com/05000315/LER-2D1990-2D012-2C_-3Aon_901015-2Cfailed_to_Comply_W/Tech_Spec_When_Fire_Watch_Posting_Miscommunicated
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1990-012, :on 901015,failed to Comply W/Tech Spec When Fire Watch Posting Miscommunicated

LER-1989-004, :on 890324,leakage Found on Containment Penetrations Exceeded Tech Spec 3.6.1.2.b Requirement.Caused by Excessive Leakage Rate of Valves WCR-924,ECR-26 & ECR-31. Faulty Valves Repaired & Restested
type: Subject
label: 05000315/LER-1989-004, :on 890324,leakage Found on Containment Penetrations Exceeded Tech Spec 3.6.1.2.b Requirement.Caused by Excessive Leakage Rate of Valves WCR-924,ECR-26 & ECR-31. Faulty Valves Repaired & Restested
page: https://kanterella.com/05000315/LER-2D1989-2D004-2C_-3Aon_890324-2Cleakage_Found_on_Containment_Penetrations_Exceeded_Tech_Spec_3.6.1.2.b_Requirement.Caused_by_Excessive_Leakage_Rate_of_Valves_WCR-2D9…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1989-004, :on 890324,leakage Found on Containment Penetrations Exceeded Tech Spec 3.6.1.2.b Requirement.Caused by Excessive Leakage Rate of Valves WCR-924,ECR-26 & ECR-31. Faulty Valves Repaired & Restested

LER-1989-009, :on 890331,discrepancy Noted in Westinghouse P-250 Computer Calculated Thermal Power Value Which Could Lead to Exceeding Rated Thermal Power.Caused by Not Including blowdown-mass Enthalpy Term
type: Subject
label: 05000316/LER-1989-009, :on 890331,discrepancy Noted in Westinghouse P-250 Computer Calculated Thermal Power Value Which Could Lead to Exceeding Rated Thermal Power.Caused by Not Including blowdown-mass Enthalpy Term
page: https://kanterella.com/05000316/LER-2D1989-2D009-2C_-3Aon_890331-2Cdiscrepancy_Noted_in_Westinghouse_P-2D250_Computer_Calculated_Thermal_Power_Value_Which_Could_Lead_to_Exceeding_Rated_Thermal_Power.C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1989-009, :on 890331,discrepancy Noted in Westinghouse P-250 Computer Calculated Thermal Power Value Which Could Lead to Exceeding Rated Thermal Power.Caused by Not Including blowdown-mass Enthalpy Term

LER-1990-005-01, :on 900724,grace Period Requirement of 25- of 18 Month Surveillance Interval for Tech Spec Exceeded.Caused by Incorrect Entry Into Computerized Schedular Program. Schedule Reprogrammed
type: Subject
label: 05000315/LER-1990-005-01, :on 900724,grace Period Requirement of 25% of 18 Month Surveillance Interval for Tech Spec Exceeded.Caused by Incorrect Entry Into Computerized Schedular Program. Schedule Reprogrammed
page: https://kanterella.com/05000315/LER-2D1990-2D005-2D01-2C_-3Aon_900724-2Cgrace_Period_Requirement_of_25-_of_18_Month_Surveillance_Interval_for_Tech_Spec_Exceeded.Caused_by_Incorrect_Entry_Into_Computer…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1990-005-01, :on 900724,grace Period Requirement of 25% of 18 Month Surveillance Interval for Tech Spec Exceeded.Caused by Incorrect Entry Into Computerized Schedular Program. Schedule Reprogrammed

LER-1990-006-01, :on 900730,confirmed That Inadequate Emergency Lighting Placed Plant in Condition Not Covered by Emergency Procedures.Caused by Failure to Review Changes to Emergency Remote Shutdown Procedures
type: Subject
label: 05000315/LER-1990-006-01, :on 900730,confirmed That Inadequate Emergency Lighting Placed Plant in Condition Not Covered by Emergency Procedures.Caused by Failure to Review Changes to Emergency Remote Shutdown Procedures
page: https://kanterella.com/05000315/LER-2D1990-2D006-2D01-2C_-3Aon_900730-2Cconfirmed_That_Inadequate_Emergency_Lighting_Placed_Plant_in_Condition_Not_Covered_by_Emergency_Procedures.Caused_by_Failure_to_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1990-006-01, :on 900730,confirmed That Inadequate Emergency Lighting Placed Plant in Condition Not Covered by Emergency Procedures.Caused by Failure to Review Changes to Emergency Remote Shutdown Procedures

LER-1989-012-01, :on 890913,solid State Protection Sys Surveillance Testing Performed on Train B While Train a Safety Injection Pump Inoperable.Caused by Personnel Error. Breaker Surveillance Test Procedures Revised
type: Subject
label: 05000315/LER-1989-012-01, :on 890913,solid State Protection Sys Surveillance Testing Performed on Train B While Train a Safety Injection Pump Inoperable.Caused by Personnel Error. Breaker Surveillance Test Procedures Revised
page: https://kanterella.com/05000315/LER-2D1989-2D012-2D01-2C_-3Aon_890913-2Csolid_State_Protection_Sys_Surveillance_Testing_Performed_on_Train_B_While_Train_a_Safety_Injection_Pump_Inoperable.Caused_by_Pe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1989-012-01, :on 890913,solid State Protection Sys Surveillance Testing Performed on Train B While Train a Safety Injection Pump Inoperable.Caused by Personnel Error. Breaker Surveillance Test Procedures Revised

LER-1990-004-01, :on 900508,reactor Operator Inadvertently Started Containment Recirculation Fan Instead of Hydrogen Recombiner During Surveillance Test.Caused by Inadequate Work Practice.Condenser Restored
type: Subject
label: 05000315/LER-1990-004-01, :on 900508,reactor Operator Inadvertently Started Containment Recirculation Fan Instead of Hydrogen Recombiner During Surveillance Test.Caused by Inadequate Work Practice.Condenser Restored
page: https://kanterella.com/05000315/LER-2D1990-2D004-2D01-2C_-3Aon_900508-2Creactor_Operator_Inadvertently_Started_Containment_Recirculation_Fan_Instead_of_Hydrogen_Recombiner_During_Surveillance_Test.Cau…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1990-004-01, :on 900508,reactor Operator Inadvertently Started Containment Recirculation Fan Instead of Hydrogen Recombiner During Surveillance Test.Caused by Inadequate Work Practice.Condenser Restored

LER-1989-002, :on 890116,seismic Restraint,Located on 24-inch ECCS Suction Line,Noted to Have Significant Deformation. Probably Caused by Removal & Reinstallation of Piping During Startup.Mod Initiated to Repair Restraint
type: Subject
label: 05000316/LER-1989-002, :on 890116,seismic Restraint,Located on 24-inch ECCS Suction Line,Noted to Have Significant Deformation. Probably Caused by Removal & Reinstallation of Piping During Startup.Mod Initiated to Repair Restraint
page: https://kanterella.com/05000316/LER-2D1989-2D002-2C_-3Aon_890116-2Cseismic_Restraint-2CLocated_on_24-2Dinch_ECCS_Suction_Line-2CNoted_to_Have_Significant_Deformation._Probably_Caused_by_Removal_-26_Re…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1989-002, :on 890116,seismic Restraint,Located on 24-inch ECCS Suction Line,Noted to Have Significant Deformation. Probably Caused by Removal & Reinstallation of Piping During Startup.Mod Initiated to Repair Restraint

LER-1989-007-01, :on 890414,Fire Door 422 in Demineralizer Valve Gallery,High Radiation Area Not Inspected Per Tech Spec 4.7.10.2a.Cause Not Stated.All Surveillances Assigned to Personnel Reconducted for Other Discrepancy
type: Subject
label: 05000315/LER-1989-007-01, :on 890414,Fire Door 422 in Demineralizer Valve Gallery,High Radiation Area Not Inspected Per Tech Spec 4.7.10.2a.Cause Not Stated.All Surveillances Assigned to Personnel Reconducted for Other Discrepancy
page: https://kanterella.com/05000315/LER-2D1989-2D007-2D01-2C_-3Aon_890414-2CFire_Door_422_in_Demineralizer_Valve_Gallery-2CHigh_Radiation_Area_Not_Inspected_Per_Tech_Spec_4.7.10.2a.Cause_Not_Stated.All_Su…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1989-007-01, :on 890414,Fire Door 422 in Demineralizer Valve Gallery,High Radiation Area Not Inspected Per Tech Spec 4.7.10.2a.Cause Not Stated.All Surveillances Assigned to Personnel Reconducted for Other Discrepancy

LER-1988-007-01, :on 880908,flow Passage Insp of Ice Condenser Revealed Frost & Ice Buildup.Caused by Sublimation of Ice or High Humidity in Containment Air.Flow Passages Manually Cleaned to Remove Accessible Frost
type: Subject
label: 05000315/LER-1988-007-01, :on 880908,flow Passage Insp of Ice Condenser Revealed Frost & Ice Buildup.Caused by Sublimation of Ice or High Humidity in Containment Air.Flow Passages Manually Cleaned to Remove Accessible Frost
page: https://kanterella.com/05000315/LER-2D1988-2D007-2D01-2C_-3Aon_880908-2Cflow_Passage_Insp_of_Ice_Condenser_Revealed_Frost_-26_Ice_Buildup.Caused_by_Sublimation_of_Ice_or_High_Humidity_in_Containment_A…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1988-007-01, :on 880908,flow Passage Insp of Ice Condenser Revealed Frost & Ice Buildup.Caused by Sublimation of Ice or High Humidity in Containment Air.Flow Passages Manually Cleaned to Remove Accessible Frost

Procedural Noncompliance.Administrative Actions Re Involved Individuals Taken
type: Subject
label: 05000315/LER-1988-005, :on 880705,two CO2 Protected Areas Isolated W/O Compensatory Action Required Per Tech Specs.Caused by Personnel Error/Procedural Noncompliance.Administrative Actions Re Involved Individuals Taken
page: https://kanterella.com/05000315/LER-2D1988-2D005-2C_-3Aon_880705-2Ctwo_CO2_Protected_Areas_Isolated_W/O_Compensatory_Action_Required_Per_Tech_Specs.Caused_by_Personnel_Error/Procedural_Noncompliance.A…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1988-005, :on 880705,two CO2 Protected Areas Isolated W/O Compensatory Action Required Per Tech Specs.Caused by Personnel Error/Procedural Noncompliance.Administrative Actions Re Involved Individuals Taken

LER-1989-014, :on 890814,reactor Protection Sys Actuation Occurred Due to Failure of Class 1E Power Supply Inverter. Caused by Failed Silicon Controlled Rectifier in Static Transfer Switch.Inverter Repaired
type: Subject
label: 05000316/LER-1989-014, :on 890814,reactor Protection Sys Actuation Occurred Due to Failure of Class 1E Power Supply Inverter. Caused by Failed Silicon Controlled Rectifier in Static Transfer Switch.Inverter Repaired
page: https://kanterella.com/05000316/LER-2D1989-2D014-2C_-3Aon_890814-2Creactor_Protection_Sys_Actuation_Occurred_Due_to_Failure_of_Class_1E_Power_Supply_Inverter._Caused_by_Failed_Silicon_Controlled_Recti…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1989-014, :on 890814,reactor Protection Sys Actuation Occurred Due to Failure of Class 1E Power Supply Inverter. Caused by Failed Silicon Controlled Rectifier in Static Transfer Switch.Inverter Repaired

LER-1990-013-01, :on 901215,during Tech Spec Surveillance,Plant Battery Declared Inoperable When Single Cell Voltage Decreased Below Test Limit.Caused by Improper Setpoint. Setpoints Verified & Corrected as Needed
type: Subject
label: 05000316/LER-1990-013-01, :on 901215,during Tech Spec Surveillance,Plant Battery Declared Inoperable When Single Cell Voltage Decreased Below Test Limit.Caused by Improper Setpoint. Setpoints Verified & Corrected as Needed
page: https://kanterella.com/05000316/LER-2D1990-2D013-2D01-2C_-3Aon_901215-2Cduring_Tech_Spec_Surveillance-2CPlant_Battery_Declared_Inoperable_When_Single_Cell_Voltage_Decreased_Below_Test_Limit.Caused_by_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1990-013-01, :on 901215,during Tech Spec Surveillance,Plant Battery Declared Inoperable When Single Cell Voltage Decreased Below Test Limit.Caused by Improper Setpoint. Setpoints Verified & Corrected as Needed

LER-1989-009, :on 890705,disovered That Testing Document for Valve 1-CS-443-2 Not Signed Off.Record Search Conducted & No Evidence Found to Indicate That post-maint Testing Performed.Caused by Personnel Error
type: Subject
label: 05000315/LER-1989-009, :on 890705,disovered That Testing Document for Valve 1-CS-443-2 Not Signed Off.Record Search Conducted & No Evidence Found to Indicate That post-maint Testing Performed.Caused by Personnel Error
page: https://kanterella.com/05000315/LER-2D1989-2D009-2C_-3Aon_890705-2Cdisovered_That_Testing_Document_for_Valve_1-2DCS-2D443-2D2_Not_Signed_Off.Record_Search_Conducted_-26_No_Evidence_Found_to_Indicate_T…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1989-009, :on 890705,disovered That Testing Document for Valve 1-CS-443-2 Not Signed Off.Record Search Conducted & No Evidence Found to Indicate That post-maint Testing Performed.Caused by Personnel Error

LER-1987-015-01, :on 871120,facility Entered Tech Spec 3.0.3 Due to Corrective Maint.Caused by Time Needed to Repair Separated Voltage Cable Connector Broken Due to Frequent Use.Connector Replaced
type: Subject
label: 05000316/LER-1987-015-01, :on 871120,facility Entered Tech Spec 3.0.3 Due to Corrective Maint.Caused by Time Needed to Repair Separated Voltage Cable Connector Broken Due to Frequent Use.Connector Replaced
page: https://kanterella.com/05000316/LER-2D1987-2D015-2D01-2C_-3Aon_871120-2Cfacility_Entered_Tech_Spec_3.0.3_Due_to_Corrective_Maint.Caused_by_Time_Needed_to_Repair_Separated_Voltage_Cable_Connector_Broke…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-015-01, :on 871120,facility Entered Tech Spec 3.0.3 Due to Corrective Maint.Caused by Time Needed to Repair Separated Voltage Cable Connector Broken Due to Frequent Use.Connector Replaced

Tech Specs.Caused by Personnel Error.Procedures Updated to List Required Sampling Frequencies & Analysis for Sys
type: Subject
label: 05000315/LER-1988-012, :on 881111,turbine Room Sump Not Sampled & Analyzed in Accordance W/Tech Specs.Caused by Personnel Error.Procedures Updated to List Required Sampling Frequencies & Analysis for Sys
page: https://kanterella.com/05000315/LER-2D1988-2D012-2C_-3Aon_881111-2Cturbine_Room_Sump_Not_Sampled_-26_Analyzed_in_Accordance_W/Tech_Specs.Caused_by_Personnel_Error.Procedures_Updated_to_List_Required_S…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1988-012, :on 881111,turbine Room Sump Not Sampled & Analyzed in Accordance W/Tech Specs.Caused by Personnel Error.Procedures Updated to List Required Sampling Frequencies & Analysis for Sys

LER-1987-022, :on 871007,as Found Data of Two Pressurizer Level Channels Exceeded Tech Spec Limiting Condition for Operation.Caused by Transmitter Calibr Shift.Calibr Checks for New Transmitter Installations Planned
type: Subject
label: 05000315/LER-1987-022, :on 871007,as Found Data of Two Pressurizer Level Channels Exceeded Tech Spec Limiting Condition for Operation.Caused by Transmitter Calibr Shift.Calibr Checks for New Transmitter Installations Planned
page: https://kanterella.com/05000315/LER-2D1987-2D022-2C_-3Aon_871007-2Cas_Found_Data_of_Two_Pressurizer_Level_Channels_Exceeded_Tech_Spec_Limiting_Condition_for_Operation.Caused_by_Transmitter_Calibr_Shif…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1987-022, :on 871007,as Found Data of Two Pressurizer Level Channels Exceeded Tech Spec Limiting Condition for Operation.Caused by Transmitter Calibr Shift.Calibr Checks for New Transmitter Installations Planned

LER-1988-002-01, :on 880326,ice Buildup in Ice Condenser Flow Passages Declared Inoperable.Caused by Sublimation of Ice or High Humidity in Containment Air.Flow Passages Manually Cleaned to Remove Frost
type: Subject
label: 05000315/LER-1988-002-01, :on 880326,ice Buildup in Ice Condenser Flow Passages Declared Inoperable.Caused by Sublimation of Ice or High Humidity in Containment Air.Flow Passages Manually Cleaned to Remove Frost
page: https://kanterella.com/05000315/LER-2D1988-2D002-2D01-2C_-3Aon_880326-2Cice_Buildup_in_Ice_Condenser_Flow_Passages_Declared_Inoperable.Caused_by_Sublimation_of_Ice_or_High_Humidity_in_Containment_Air.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1988-002-01, :on 880326,ice Buildup in Ice Condenser Flow Passages Declared Inoperable.Caused by Sublimation of Ice or High Humidity in Containment Air.Flow Passages Manually Cleaned to Remove Frost

05000316/LER-1988-007, :on 880613,use of Incorrect ISI Ref Values Resulted in Literal Violation of Tech Spec 3.5.2.Event Originally Reported on 871224.Caused by Personnel Error. ISI Documents Revised
type: Subject
page: https://kanterella.com/05000316/LER-2D1988-2D007-2C_-3Aon_880613-2Cuse_of_Incorrect_ISI_Ref_Values_Resulted_in_Literal_Violation_of_Tech_Spec_3.5.2.Event_Originally_Reported_on_871224.Caused_by_Person…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1988-007, :on 880613,use of Incorrect ISI Ref Values Resulted in Literal Violation of Tech Spec 3.5.2.Event Originally Reported on 871224.Caused by Personnel Error. ISI Documents Revised

8 Inch in 46 Flow Passages & 6 of 24 Ice Condenser Bays.Caused by Abnormal Degradation.Ice Condenser Defrosted
type: Subject
label: 05000316/LER-1987-010-01, :on 870902,insps Revealed Frost & Ice Buildup on Lattice Frames of Greater That 3/8 Inch in 46 Flow Passages & 6 of 24 Ice Condenser Bays.Caused by Abnormal Degradation.Ice Condenser Defrosted
page: https://kanterella.com/05000316/LER-2D1987-2D010-2D01-2C_-3Aon_870902-2Cinsps_Revealed_Frost_-26_Ice_Buildup_on_Lattice_Frames_of_Greater_That_3/8_Inch_in_46_Flow_Passages_-26_6_of_24_Ice_Condenser_Ba…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-010-01, :on 870902,insps Revealed Frost & Ice Buildup on Lattice Frames of Greater That 3/8 Inch in 46 Flow Passages & 6 of 24 Ice Condenser Bays.Caused by Abnormal Degradation.Ice Condenser Defrosted

Tech Spec Requirements for Testing of Turbine & Motor Driven Auxiliary Feed Pumps & Emergency Diesel Generators Occurred.Caused by Procedural Deficiencies.Procedure Revised
type: Subject
label: 05000315/LER-1987-014, :on 870812,failure to Comply W/Tech Spec Requirements for Testing of Turbine & Motor Driven Auxiliary Feed Pumps & Emergency Diesel Generators Occurred.Caused by Procedural Deficiencies.Procedure Revised
page: https://kanterella.com/05000315/LER-2D1987-2D014-2C_-3Aon_870812-2Cfailure_to_Comply_W/Tech_Spec_Requirements_for_Testing_of_Turbine_-26_Motor_Driven_Auxiliary_Feed_Pumps_-26_Emergency_Diesel_Generato…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1987-014, :on 870812,failure to Comply W/Tech Spec Requirements for Testing of Turbine & Motor Driven Auxiliary Feed Pumps & Emergency Diesel Generators Occurred.Caused by Procedural Deficiencies.Procedure Revised

LER-1987-018, :on 870826,certain Fire Rated Assemblies & Dampers Declared Inoperable Due to Incorrect Application of Surveillance Requirements.Caused by Personnel Error. Administrative Actions Taken Re Individual
type: Subject
label: 05000315/LER-1987-018, :on 870826,certain Fire Rated Assemblies & Dampers Declared Inoperable Due to Incorrect Application of Surveillance Requirements.Caused by Personnel Error. Administrative Actions Taken Re Individual
page: https://kanterella.com/05000315/LER-2D1987-2D018-2C_-3Aon_870826-2Ccertain_Fire_Rated_Assemblies_-26_Dampers_Declared_Inoperable_Due_to_Incorrect_Application_of_Surveillance_Requirements.Caused_by_Per…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1987-018, :on 870826,certain Fire Rated Assemblies & Dampers Declared Inoperable Due to Incorrect Application of Surveillance Requirements.Caused by Personnel Error. Administrative Actions Taken Re Individual

Measurement Error.Flow Reconciled
type: Subject
label: 05000315/LER-1987-016, :on 870815,discovered That Boron Injection Sys Distribution Flow Not in Compliance W/Tech Spec Requirements.Caused by Normal Sys Fluctuations Combined W/ Instrument/Measurement Error.Flow Reconciled
page: https://kanterella.com/05000315/LER-2D1987-2D016-2C_-3Aon_870815-2Cdiscovered_That_Boron_Injection_Sys_Distribution_Flow_Not_in_Compliance_W/Tech_Spec_Requirements.Caused_by_Normal_Sys_Fluctuations_Co…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1987-016, :on 870815,discovered That Boron Injection Sys Distribution Flow Not in Compliance W/Tech Spec Requirements.Caused by Normal Sys Fluctuations Combined W/ Instrument/Measurement Error.Flow Reconciled

LER-1987-005-01, :on 870602,ESF Actuation Occurred Due to Low Low Steam Generator Level in Steam Generator 23.Caused by Personnel Error.Appropriate Administrative Action Taken Re Personnel.Procedures Implemented
type: Subject
label: 05000316/LER-1987-005-01, :on 870602,ESF Actuation Occurred Due to Low Low Steam Generator Level in Steam Generator 23.Caused by Personnel Error.Appropriate Administrative Action Taken Re Personnel.Procedures Implemented
page: https://kanterella.com/05000316/LER-2D1987-2D005-2D01-2C_-3Aon_870602-2CESF_Actuation_Occurred_Due_to_Low_Low_Steam_Generator_Level_in_Steam_Generator_23.Caused_by_Personnel_Error.Appropriate_Administ…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-005-01, :on 870602,ESF Actuation Occurred Due to Low Low Steam Generator Level in Steam Generator 23.Caused by Personnel Error.Appropriate Administrative Action Taken Re Personnel.Procedures Implemented

LER-1987-006-01, :on 870615,containment Spray Pumps Declared Inoperable Due to Improperly Performed Tech Spec Surveillances Testing.Caused by Improper Labeling of Flow Instrumentation Being Maintained.Pumps Tested
type: Subject
label: 05000316/LER-1987-006-01, :on 870615,containment Spray Pumps Declared Inoperable Due to Improperly Performed Tech Spec Surveillances Testing.Caused by Improper Labeling of Flow Instrumentation Being Maintained.Pumps Tested
page: https://kanterella.com/05000316/LER-2D1987-2D006-2D01-2C_-3Aon_870615-2Ccontainment_Spray_Pumps_Declared_Inoperable_Due_to_Improperly_Performed_Tech_Spec_Surveillances_Testing.Caused_by_Improper_Label…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-006-01, :on 870615,containment Spray Pumps Declared Inoperable Due to Improperly Performed Tech Spec Surveillances Testing.Caused by Improper Labeling of Flow Instrumentation Being Maintained.Pumps Tested

LER-1987-008, :on 870604,ESF Actuation Occurred Due to Extreme High Level in Steam Generator 12.Caused by Mispositioning of Both Level Controller & Feedwater Flow Selector Switch.Level Controller Refurbished
type: Subject
label: 05000315/LER-1987-008, :on 870604,ESF Actuation Occurred Due to Extreme High Level in Steam Generator 12.Caused by Mispositioning of Both Level Controller & Feedwater Flow Selector Switch.Level Controller Refurbished
page: https://kanterella.com/05000315/LER-2D1987-2D008-2C_-3Aon_870604-2CESF_Actuation_Occurred_Due_to_Extreme_High_Level_in_Steam_Generator_12.Caused_by_Mispositioning_of_Both_Level_Controller_-26_Feedwate…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1987-008, :on 870604,ESF Actuation Occurred Due to Extreme High Level in Steam Generator 12.Caused by Mispositioning of Both Level Controller & Feedwater Flow Selector Switch.Level Controller Refurbished

Reactor Trip Occurred Due to Loss of Main Condenser Vacuum.Caused by Failure of Manual Isolation Valve.Procedures Implemented to Verify Proper Response of Automatic Protection Sys
type: Subject
label: 05000316/LER-1987-004-01, :on 870601,turbine Trip/Reactor Trip Occurred Due to Loss of Main Condenser Vacuum.Caused by Failure of Manual Isolation Valve.Procedures Implemented to Verify Proper Response of Automatic Protection Sys
page: https://kanterella.com/05000316/LER-2D1987-2D004-2D01-2C_-3Aon_870601-2Cturbine_Trip/Reactor_Trip_Occurred_Due_to_Loss_of_Main_Condenser_Vacuum.Caused_by_Failure_of_Manual_Isolation_Valve.Procedures_I…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-004-01, :on 870601,turbine Trip/Reactor Trip Occurred Due to Loss of Main Condenser Vacuum.Caused by Failure of Manual Isolation Valve.Procedures Implemented to Verify Proper Response of Automatic Protection Sys

05000316/LER-1987-003, :on 870107,overpower Delta Temp Bistables Failed to Trip During Instrumentation Calibr.Caused by Procedural Deficiency & Personnel Error.Procedure Revised
type: Subject
page: https://kanterella.com/05000316/LER-2D1987-2D003-2C_-3Aon_870107-2Coverpower_Delta_Temp_Bistables_Failed_to_Trip_During_Instrumentation_Calibr.Caused_by_Procedural_Deficiency_-26_Personnel_Error.Proce…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-003, :on 870107,overpower Delta Temp Bistables Failed to Trip During Instrumentation Calibr.Caused by Procedural Deficiency & Personnel Error.Procedure Revised

LER-1987-002, :on 870305-06,frost & Ice Buildup on Lattice Frames & Between Walls & Ice Baskets Adjacent to Walls Exceeded Tech Spec 4.6.5.1.b.3 Limits.Cause to Be Investigated by Westinghouse.Internal Investigation Begun
type: Subject
label: 05000316/LER-1987-002, :on 870305-06,frost & Ice Buildup on Lattice Frames & Between Walls & Ice Baskets Adjacent to Walls Exceeded Tech Spec 4.6.5.1.b.3 Limits.Cause to Be Investigated by Westinghouse.Internal Investigation Begun
page: https://kanterella.com/05000316/LER-2D1987-2D002-2C_-3Aon_870305-2D06-2Cfrost_-26_Ice_Buildup_on_Lattice_Frames_-26_Between_Walls_-26_Ice_Baskets_Adjacent_to_Walls_Exceeded_Tech_Spec_4.6.5.1.b.3_Limit…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-002, :on 870305-06,frost & Ice Buildup on Lattice Frames & Between Walls & Ice Baskets Adjacent to Walls Exceeded Tech Spec 4.6.5.1.b.3 Limits.Cause to Be Investigated by Westinghouse.Internal Investigation Begun

LER-1986-021, :on 860925,RHR Sys May Have Been in Analyzed Configuration Re LOCA Analysis.Caused by Misunderstanding of Tech Spec 3.5.2.Caution Tags Placed on Safety Injection & RHR Sys to Prevent Isolation
type: Subject
label: 05000315/LER-1986-021, :on 860925,RHR Sys May Have Been in Analyzed Configuration Re LOCA Analysis.Caused by Misunderstanding of Tech Spec 3.5.2.Caution Tags Placed on Safety Injection & RHR Sys to Prevent Isolation
page: https://kanterella.com/05000315/LER-2D1986-2D021-2C_-3Aon_860925-2CRHR_Sys_May_Have_Been_in_Analyzed_Configuration_Re_LOCA_Analysis.Caused_by_Misunderstanding_of_Tech_Spec_3.5.2.Caution_Tags_Placed_on…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1986-021, :on 860925,RHR Sys May Have Been in Analyzed Configuration Re LOCA Analysis.Caused by Misunderstanding of Tech Spec 3.5.2.Caution Tags Placed on Safety Injection & RHR Sys to Prevent Isolation

LER-1987-001-01, :on 870303,spurious Signal from Source Range Instrument Channel N-31 Resulted in ESF Actuation.Caused by Malfunction of Detector.Source Range Instrument Detector Removed,Replaced & Declared Operable on 870314
type: Subject
label: 05000316/LER-1987-001-01, :on 870303,spurious Signal from Source Range Instrument Channel N-31 Resulted in ESF Actuation.Caused by Malfunction of Detector.Source Range Instrument Detector Removed,Replaced & Declared Operable on 870314
page: https://kanterella.com/05000316/LER-2D1987-2D001-2D01-2C_-3Aon_870303-2Cspurious_Signal_from_Source_Range_Instrument_Channel_N-2D31_Resulted_in_ESF_Actuation.Caused_by_Malfunction_of_Detector.Source_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000316/LER-1987-001-01, :on 870303,spurious Signal from Source Range Instrument Channel N-31 Resulted in ESF Actuation.Caused by Malfunction of Detector.Source Range Instrument Detector Removed,Replaced & Declared Operable on 870314

Utils That Have Same Unit
type: Subject
label: 05000315/LER-1987-013, :on 870701 & 02,ice Buildup Discovered in Ice Condenser Flow Passages.Caused Possibly by Sublimation of Ice or High Humidity in Containment Air.Condenser Defrosted & Matter Discussed W/Utils That Have Same Unit
page: https://kanterella.com/05000315/LER-2D1987-2D013-2C_-3Aon_870701_-26_02-2Cice_Buildup_Discovered_in_Ice_Condenser_Flow_Passages.Caused_Possibly_by_Sublimation_of_Ice_or_High_Humidity_in_Containment_Ai…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1987-013, :on 870701 & 02,ice Buildup Discovered in Ice Condenser Flow Passages.Caused Possibly by Sublimation of Ice or High Humidity in Containment Air.Condenser Defrosted & Matter Discussed W/Utils That Have Same Unit

LER-1995-002, :on 950303,identified That Slb Analyses Failed to Consider as Initial Condition One Percent SDM for All Rods in (ARI) Due to Lack of Coordination & Unclear Div of Responsibilities.Ari Core Data Book SDM Curves Modified
type: Subject
label: 05000528/LER-1995-002, :on 950303,identified That Slb Analyses Failed to Consider as Initial Condition One Percent SDM for All Rods in (ARI) Due to Lack of Coordination & Unclear Div of Responsibilities.Ari Core Data Book SDM Curves Modified
page: https://kanterella.com/05000528/LER-2D1995-2D002-2C_-3Aon_950303-2Cidentified_That_Slb_Analyses_Failed_to_Consider_as_Initial_Condition_One_Percent_SDM_for_All_Rods_in_-28ARI-29_Due_to_Lack_of_Coordin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000528/LER-1995-002, :on 950303,identified That Slb Analyses Failed to Consider as Initial Condition One Percent SDM for All Rods in (ARI) Due to Lack of Coordination & Unclear Div of Responsibilities.Ari Core Data Book SDM Curves Modified

A Taken Since Transmission Sys Transient Short Duration
type: Subject
label: 05000528/LER-1995-003-01, :on 950729,switchyard Voltage Dropped Below Administratively Imposed Limit of 524 Kv for Approx 10 Seconds Due to Transient Grid Voltage.No C/A Taken Since Transmission Sys Transient Short Duration
page: https://kanterella.com/05000528/LER-2D1995-2D003-2D01-2C_-3Aon_950729-2Cswitchyard_Voltage_Dropped_Below_Administratively_Imposed_Limit_of_524_Kv_for_Approx_10_Seconds_Due_to_Transient_Grid_Voltage.No…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000528/LER-1995-003-01, :on 950729,switchyard Voltage Dropped Below Administratively Imposed Limit of 524 Kv for Approx 10 Seconds Due to Transient Grid Voltage.No C/A Taken Since Transmission Sys Transient Short Duration

Proper Set Point
type: Subject
label: 05000335/LER-1997-011, :on 971102,non-conservative RAS Set Point Resulted in Operation Prohibited by Ts.Caused by Inadequate Set Point & Instrument Loop Scaling Process.Revised ESFAS Functional Tp W/Proper Set Point
page: https://kanterella.com/05000335/LER-2D1997-2D011-2C_-3Aon_971102-2Cnon-2Dconservative_RAS_Set_Point_Resulted_in_Operation_Prohibited_by_Ts.Caused_by_Inadequate_Set_Point_-26_Instrument_Loop_Scaling_Pr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1997-011, :on 971102,non-conservative RAS Set Point Resulted in Operation Prohibited by Ts.Caused by Inadequate Set Point & Instrument Loop Scaling Process.Revised ESFAS Functional Tp W/Proper Set Point

LER-1995-005-02, :on 951120,2A EDG Relay Socket Failures Occurred Due to High Cycle Fatigue.Replaced Degraded Relay Sockets & 2A & 2B EDGs Run for 24 H Each,At Full Load After Replacement of Degraded Relay Sockets
type: Subject
label: 05000389/LER-1995-005-02, :on 951120,2A EDG Relay Socket Failures Occurred Due to High Cycle Fatigue.Replaced Degraded Relay Sockets & 2A & 2B EDGs Run for 24 H Each,At Full Load After Replacement of Degraded Relay Sockets
page: https://kanterella.com/05000389/LER-2D1995-2D005-2D02-2C_-3Aon_951120-2C2A_EDG_Relay_Socket_Failures_Occurred_Due_to_High_Cycle_Fatigue.Replaced_Degraded_Relay_Sockets_-26_2A_-26_2B_EDGs_Run_for_24_H_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1995-005-02, :on 951120,2A EDG Relay Socket Failures Occurred Due to High Cycle Fatigue.Replaced Degraded Relay Sockets & 2A & 2B EDGs Run for 24 H Each,At Full Load After Replacement of Degraded Relay Sockets

LER-1995-007, :on 950512,determined That Bench Settings of air-operated Letdown & Containment Isolation Valves Adversely Affected Ability of Valves to Perform 10CFR50 App R Safety Function.Affected Valves Modified
type: Subject
label: 05000528/LER-1995-007, :on 950512,determined That Bench Settings of air-operated Letdown & Containment Isolation Valves Adversely Affected Ability of Valves to Perform 10CFR50 App R Safety Function.Affected Valves Modified
page: https://kanterella.com/05000528/LER-2D1995-2D007-2C_-3Aon_950512-2Cdetermined_That_Bench_Settings_of_air-2Doperated_Letdown_-26_Containment_Isolation_Valves_Adversely_Affected_Ability_of_Valves_to_Per…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000528/LER-1995-007, :on 950512,determined That Bench Settings of air-operated Letdown & Containment Isolation Valves Adversely Affected Ability of Valves to Perform 10CFR50 App R Safety Function.Affected Valves Modified

O Prior Initiation of Temporary Change Due to Out of Svc Valve
type: Subject
label: 05000335/LER-1989-001-03, :on 890517,inadvertent Liquid Release from Waste Mgt Sys Occurred.Caused by Personnel Deviation from Procedure OP 1-0510022 W/O Prior Initiation of Temporary Change Due to Out of Svc Valve
page: https://kanterella.com/05000335/LER-2D1989-2D001-2D03-2C_-3Aon_890517-2Cinadvertent_Liquid_Release_from_Waste_Mgt_Sys_Occurred.Caused_by_Personnel_Deviation_from_Procedure_OP_1-2D0510022_W/O_Prior_Ini…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1989-001-03, :on 890517,inadvertent Liquid Release from Waste Mgt Sys Occurred.Caused by Personnel Deviation from Procedure OP 1-0510022 W/O Prior Initiation of Temporary Change Due to Out of Svc Valve

LER-1989-020, :on 890907,emergency Diesel Generator B, Essential Spray Pond Pump B & Essential Cooling Water Pump B Started During Removal of Jumpers.Caused by Personnel Error. Maint Procedure Revised
type: Subject
label: 05000528/LER-1989-020, :on 890907,emergency Diesel Generator B, Essential Spray Pond Pump B & Essential Cooling Water Pump B Started During Removal of Jumpers.Caused by Personnel Error. Maint Procedure Revised
page: https://kanterella.com/05000528/LER-2D1989-2D020-2C_-3Aon_890907-2Cemergency_Diesel_Generator_B-2C_Essential_Spray_Pond_Pump_B_-26_Essential_Cooling_Water_Pump_B_Started_During_Removal_of_Jumpers.Caus…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000528/LER-1989-020, :on 890907,emergency Diesel Generator B, Essential Spray Pond Pump B & Essential Cooling Water Pump B Started During Removal of Jumpers.Caused by Personnel Error. Maint Procedure Revised

05000528/LER-1989-013, Forwards Suppl 1 to LER 89-013-00.Rept Being Submitted to Include Info Requested by Part 21
type: Subject
page: https://kanterella.com/05000528/LER-2D1989-2D013-2C_Forwards_Suppl_1_to_LER_89-2D013-2D00.Rept_Being_Submitted_to_Include_Info_Requested_by_Part_21
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000528/LER-1989-013, Forwards Suppl 1 to LER 89-013-00.Rept Being Submitted to Include Info Requested by Part 21

LER-1989-006-01, :on 890731,containment Purge Isolation Actuation Signal Initiated Due to Loss of Power to Panel 1E-PNB-D26.Cause Not Identified.Power Restored & Radiation Monitor RU-38 Placed Back on Line
type: Subject
label: 05000528/LER-1989-006-01, :on 890731,containment Purge Isolation Actuation Signal Initiated Due to Loss of Power to Panel 1E-PNB-D26.Cause Not Identified.Power Restored & Radiation Monitor RU-38 Placed Back on Line
page: https://kanterella.com/05000528/LER-2D1989-2D006-2D01-2C_-3Aon_890731-2Ccontainment_Purge_Isolation_Actuation_Signal_Initiated_Due_to_Loss_of_Power_to_Panel_1E-2DPNB-2DD26.Cause_Not_Identified.Power_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000528/LER-1989-006-01, :on 890731,containment Purge Isolation Actuation Signal Initiated Due to Loss of Power to Panel 1E-PNB-D26.Cause Not Identified.Power Restored & Radiation Monitor RU-38 Placed Back on Line

LER-1991-001, :on 910110.determined That Postulated Break in Reactor Coolant Pump High Pressure Seal Cooler Could Result in RCS Leak Outside Containment.Caused by Tube Rupture in Seal Cooler.Rcs Activity Monitored
type: Subject
label: 05000528/LER-1991-001, :on 910110.determined That Postulated Break in Reactor Coolant Pump High Pressure Seal Cooler Could Result in RCS Leak Outside Containment.Caused by Tube Rupture in Seal Cooler.Rcs Activity Monitored
page: https://kanterella.com/05000528/LER-2D1991-2D001-2C_-3Aon_910110.determined_That_Postulated_Break_in_Reactor_Coolant_Pump_High_Pressure_Seal_Cooler_Could_Result_in_RCS_Leak_Outside_Containment.Caused_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000528/LER-1991-001, :on 910110.determined That Postulated Break in Reactor Coolant Pump High Pressure Seal Cooler Could Result in RCS Leak Outside Containment.Caused by Tube Rupture in Seal Cooler.Rcs Activity Monitored

05000528/LER-1988-016, :on 880514,reactor Trip Occurred.Caused by Nonconservative Operator Performance During Reactor Startup. Info Utilized for Estimated Critical Condition Will Be Corrected
type: Subject
page: https://kanterella.com/05000528/LER-2D1988-2D016-2C_-3Aon_880514-2Creactor_Trip_Occurred.Caused_by_Nonconservative_Operator_Performance_During_Reactor_Startup._Info_Utilized_for_Estimated_Critical_Con…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000528/LER-1988-016, :on 880514,reactor Trip Occurred.Caused by Nonconservative Operator Performance During Reactor Startup. Info Utilized for Estimated Critical Condition Will Be Corrected

LER-1990-002, :on 900222,locked High Radiation Area Gate Found Open & Unguarded.Caused by Personnel Error.Radiation Protection Personnel Verified Room Unoccupied & Secured Gate Per Approved Procedure
type: Subject
label: 05000530/LER-1990-002, :on 900222,locked High Radiation Area Gate Found Open & Unguarded.Caused by Personnel Error.Radiation Protection Personnel Verified Room Unoccupied & Secured Gate Per Approved Procedure
page: https://kanterella.com/05000530/LER-2D1990-2D002-2C_-3Aon_900222-2Clocked_High_Radiation_Area_Gate_Found_Open_-26_Unguarded.Caused_by_Personnel_Error.Radiation_Protection_Personnel_Verified_Room_Unocc…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000530/LER-1990-002, :on 900222,locked High Radiation Area Gate Found Open & Unguarded.Caused by Personnel Error.Radiation Protection Personnel Verified Room Unoccupied & Secured Gate Per Approved Procedure

LER-1988-008-02, :on 890220,determined That Excessive Moisture Condensation Occasionally Discovered in Unit Resulted in Invalid Sample Results.Caused by Cooling of High Humidity Sample Stream.Temporary Heat Trace Installed
type: Subject
label: 05000530/LER-1988-008-02, :on 890220,determined That Excessive Moisture Condensation Occasionally Discovered in Unit Resulted in Invalid Sample Results.Caused by Cooling of High Humidity Sample Stream.Temporary Heat Trace Installed
page: https://kanterella.com/05000530/LER-2D1988-2D008-2D02-2C_-3Aon_890220-2Cdetermined_That_Excessive_Moisture_Condensation_Occasionally_Discovered_in_Unit_Resulted_in_Invalid_Sample_Results.Caused_by_Coo…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000530/LER-1988-008-02, :on 890220,determined That Excessive Moisture Condensation Occasionally Discovered in Unit Resulted in Invalid Sample Results.Caused by Cooling of High Humidity Sample Stream.Temporary Heat Trace Installed

05000529/LER-1987-021, :on 871202,post-accident Sampling Sys Declared Inoperable.Caused by Personnel Error.Appropriate Functional & Surveillance Tests Completed & Sys Decalred Operable.W/
type: Subject
page: https://kanterella.com/05000529/LER-2D1987-2D021-2C_-3Aon_871202-2Cpost-2Daccident_Sampling_Sys_Declared_Inoperable.Caused_by_Personnel_Error.Appropriate_Functional_-26_Surveillance_Tests_Completed_-2…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000529/LER-1987-021, :on 871202,post-accident Sampling Sys Declared Inoperable.Caused by Personnel Error.Appropriate Functional & Surveillance Tests Completed & Sys Decalred Operable.W/

LER-1987-002-01, :on 870320,Class 1E Train B Bank of Pressurizer Backup Heaters Could Not Be Energized from Control Room,Per Tech Spec Requirement.Caused by Malfunction of Heater Breaker & Personnel Error.Breaker Replaced
type: Subject
label: 05000529/LER-1987-002-01, :on 870320,Class 1E Train B Bank of Pressurizer Backup Heaters Could Not Be Energized from Control Room,Per Tech Spec Requirement.Caused by Malfunction of Heater Breaker & Personnel Error.Breaker Replaced
page: https://kanterella.com/05000529/LER-2D1987-2D002-2D01-2C_-3Aon_870320-2CClass_1E_Train_B_Bank_of_Pressurizer_Backup_Heaters_Could_Not_Be_Energized_from_Control_Room-2CPer_Tech_Spec_Requirement.Caused_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000529/LER-1987-002-01, :on 870320,Class 1E Train B Bank of Pressurizer Backup Heaters Could Not Be Energized from Control Room,Per Tech Spec Requirement.Caused by Malfunction of Heater Breaker & Personnel Error.Breaker Replaced

LER-1987-004-01, :on 870416,reactor & Turbine Trip Occurred. Caused by High Local Power Density Trip Signals Generated by Core Protection Calculators.Effects of Cycling Each Breaker Will Be Incorporated Into Guidelines
type: Subject
label: 05000529/LER-1987-004-01, :on 870416,reactor & Turbine Trip Occurred. Caused by High Local Power Density Trip Signals Generated by Core Protection Calculators.Effects of Cycling Each Breaker Will Be Incorporated Into Guidelines
page: https://kanterella.com/05000529/LER-2D1987-2D004-2D01-2C_-3Aon_870416-2Creactor_-26_Turbine_Trip_Occurred._Caused_by_High_Local_Power_Density_Trip_Signals_Generated_by_Core_Protection_Calculators.Effe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000529/LER-1987-004-01, :on 870416,reactor & Turbine Trip Occurred. Caused by High Local Power Density Trip Signals Generated by Core Protection Calculators.Effects of Cycling Each Breaker Will Be Incorporated Into Guidelines

LER-1997-004, :on 970327,plant Operators Manually Scrammed Reactor as Required by TS Due to Indication of Entry Into Region a of power-to-flow Map.Caused by Inadequate Attention to Detail.Established Event Evaluation Teams
type: Subject
label: 05000397/LER-1997-004, :on 970327,plant Operators Manually Scrammed Reactor as Required by TS Due to Indication of Entry Into Region a of power-to-flow Map.Caused by Inadequate Attention to Detail.Established Event Evaluation Teams
page: https://kanterella.com/05000397/LER-2D1997-2D004-2C_-3Aon_970327-2Cplant_Operators_Manually_Scrammed_Reactor_as_Required_by_TS_Due_to_Indication_of_Entry_Into_Region_a_of_power-2Dto-2Dflow_Map.Caused_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1997-004, :on 970327,plant Operators Manually Scrammed Reactor as Required by TS Due to Indication of Entry Into Region a of power-to-flow Map.Caused by Inadequate Attention to Detail.Established Event Evaluation Teams

LER-1996-001, :on 960425,inadvertent ESF Actuations Occurred Due to Tripping of Temporary Power Supply to IN-3.Caused by Personnel Error.Operations Restored to IN-3 Loads & Reset ESF Actuations
type: Subject
label: 05000397/LER-1996-001, :on 960425,inadvertent ESF Actuations Occurred Due to Tripping of Temporary Power Supply to IN-3.Caused by Personnel Error.Operations Restored to IN-3 Loads & Reset ESF Actuations
page: https://kanterella.com/05000397/LER-2D1996-2D001-2C_-3Aon_960425-2Cinadvertent_ESF_Actuations_Occurred_Due_to_Tripping_of_Temporary_Power_Supply_to_IN-2D3.Caused_by_Personnel_Error.Operations_Restored…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1996-001, :on 960425,inadvertent ESF Actuations Occurred Due to Tripping of Temporary Power Supply to IN-3.Caused by Personnel Error.Operations Restored to IN-3 Loads & Reset ESF Actuations

LER-1994-005, :on 940326,control Rod Failed to Scram Due to Degradation of Pilot Valve Elastomers.Caused by Inservice Aging.Scram Time Tests Performed Weekly of Operable Control Rods & SSPVs Replaced
type: Subject
label: 05000397/LER-1994-005, :on 940326,control Rod Failed to Scram Due to Degradation of Pilot Valve Elastomers.Caused by Inservice Aging.Scram Time Tests Performed Weekly of Operable Control Rods & SSPVs Replaced
page: https://kanterella.com/05000397/LER-2D1994-2D005-2C_-3Aon_940326-2Ccontrol_Rod_Failed_to_Scram_Due_to_Degradation_of_Pilot_Valve_Elastomers.Caused_by_Inservice_Aging.Scram_Time_Tests_Performed_Weekly_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1994-005, :on 940326,control Rod Failed to Scram Due to Degradation of Pilot Valve Elastomers.Caused by Inservice Aging.Scram Time Tests Performed Weekly of Operable Control Rods & SSPVs Replaced

LER-1991-028, :on on 910930,containment Airlock Door Seal Leakage Test Not Performed within Allowable Surveillance Interval.Caused by Inadequate Personnel Work Practices. Master Startup Checklist Amended
type: Subject
label: 05000397/LER-1991-028, :on on 910930,containment Airlock Door Seal Leakage Test Not Performed within Allowable Surveillance Interval.Caused by Inadequate Personnel Work Practices. Master Startup Checklist Amended
page: https://kanterella.com/05000397/LER-2D1991-2D028-2C_-3Aon_on_910930-2Ccontainment_Airlock_Door_Seal_Leakage_Test_Not_Performed_within_Allowable_Surveillance_Interval.Caused_by_Inadequate_Personnel_Wor…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1991-028, :on on 910930,containment Airlock Door Seal Leakage Test Not Performed within Allowable Surveillance Interval.Caused by Inadequate Personnel Work Practices. Master Startup Checklist Amended

LER-1991-030, :on 911104,small Leak Noted in Welded Connection Between RHR Sys Drain Valve & RHR Loop a Shutdown Cooling Return Valve.Caused by Const Fabrication Defect.Rhr Valve V-161A Isolated from RCS
type: Subject
label: 05000397/LER-1991-030, :on 911104,small Leak Noted in Welded Connection Between RHR Sys Drain Valve & RHR Loop a Shutdown Cooling Return Valve.Caused by Const Fabrication Defect.Rhr Valve V-161A Isolated from RCS
page: https://kanterella.com/05000397/LER-2D1991-2D030-2C_-3Aon_911104-2Csmall_Leak_Noted_in_Welded_Connection_Between_RHR_Sys_Drain_Valve_-26_RHR_Loop_a_Shutdown_Cooling_Return_Valve.Caused_by_Const_Fabric…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1991-030, :on 911104,small Leak Noted in Welded Connection Between RHR Sys Drain Valve & RHR Loop a Shutdown Cooling Return Valve.Caused by Const Fabrication Defect.Rhr Valve V-161A Isolated from RCS

Tech Specs Identified as Part of Program of Surveillance Procedure Verification.Further Evaluation Performed.Quality Action Team to Be Chartered to Evaluate Program
type: Subject
label: 05000397/LER-1991-013, :on 910507,non-compliances W/Tech Specs Identified as Part of Program of Surveillance Procedure Verification.Further Evaluation Performed.Quality Action Team to Be Chartered to Evaluate Program
page: https://kanterella.com/05000397/LER-2D1991-2D013-2C_-3Aon_910507-2Cnon-2Dcompliances_W/Tech_Specs_Identified_as_Part_of_Program_of_Surveillance_Procedure_Verification.Further_Evaluation_Performed.Qual…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1991-013, :on 910507,non-compliances W/Tech Specs Identified as Part of Program of Surveillance Procedure Verification.Further Evaluation Performed.Quality Action Team to Be Chartered to Evaluate Program

05000397/LER-1991-007, :on 910415,reactor Scram & Shutdown Cooling Insulation Occurred Causing Automatic Actuation.Caused by Inadequate Work Instruments.Plant Control Room Operators Reset Scram Signal
type: Subject
page: https://kanterella.com/05000397/LER-2D1991-2D007-2C_-3Aon_910415-2Creactor_Scram_-26_Shutdown_Cooling_Insulation_Occurred_Causing_Automatic_Actuation.Caused_by_Inadequate_Work_Instruments.Plant_Contro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1991-007, :on 910415,reactor Scram & Shutdown Cooling Insulation Occurred Causing Automatic Actuation.Caused by Inadequate Work Instruments.Plant Control Room Operators Reset Scram Signal

05000397/LER-1991-012, :on 910506,manual Initiation of Reactor Protection Sys Occurred Due to Low Scram Air Header Pressure.Caused by Hose Failure.Hose Replaced
type: Subject
page: https://kanterella.com/05000397/LER-2D1991-2D012-2C_-3Aon_910506-2Cmanual_Initiation_of_Reactor_Protection_Sys_Occurred_Due_to_Low_Scram_Air_Header_Pressure.Caused_by_Hose_Failure.Hose_Replaced
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1991-012, :on 910506,manual Initiation of Reactor Protection Sys Occurred Due to Low Scram Air Header Pressure.Caused by Hose Failure.Hose Replaced

Design Deficiency.Operators Replaced Blown Fuse & Reset Isolation Logic Signal
type: Subject
label: 05000397/LER-1991-011, :on 910429,ESF Actuation Occurred as Wire in Control Room Panel Inadvertently Cut.Caused by Equipment/ Design Deficiency.Operators Replaced Blown Fuse & Reset Isolation Logic Signal
page: https://kanterella.com/05000397/LER-2D1991-2D011-2C_-3Aon_910429-2CESF_Actuation_Occurred_as_Wire_in_Control_Room_Panel_Inadvertently_Cut.Caused_by_Equipment/_Design_Deficiency.Operators_Replaced_Blow…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1991-011, :on 910429,ESF Actuation Occurred as Wire in Control Room Panel Inadvertently Cut.Caused by Equipment/ Design Deficiency.Operators Replaced Blown Fuse & Reset Isolation Logic Signal

LER-1990-005, :on 900209,nonsafety-related Circuit Breaker on Power Panel Tripped,Resulting in ESF Actuation.Caused by Equipment Mfg Error Involving Defect in Circuit Breaker Tripping Mechanism.Defective Breaker Replaced
type: Subject
label: 05000397/LER-1990-005, :on 900209,nonsafety-related Circuit Breaker on Power Panel Tripped,Resulting in ESF Actuation.Caused by Equipment Mfg Error Involving Defect in Circuit Breaker Tripping Mechanism.Defective Breaker Replaced
page: https://kanterella.com/05000397/LER-2D1990-2D005-2C_-3Aon_900209-2Cnonsafety-2Drelated_Circuit_Breaker_on_Power_Panel_Tripped-2CResulting_in_ESF_Actuation.Caused_by_Equipment_Mfg_Error_Involving_Defec…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1990-005, :on 900209,nonsafety-related Circuit Breaker on Power Panel Tripped,Resulting in ESF Actuation.Caused by Equipment Mfg Error Involving Defect in Circuit Breaker Tripping Mechanism.Defective Breaker Replaced

LER-1990-003, :on 900126,HPCS Sys Pump Suction Valve Switchover Occurred During Performance of Procedure for Draining Ref Leg.Caused by Plant Configuration.Sys Restored to pre-event Lineup Status
type: Subject
label: 05000397/LER-1990-003, :on 900126,HPCS Sys Pump Suction Valve Switchover Occurred During Performance of Procedure for Draining Ref Leg.Caused by Plant Configuration.Sys Restored to pre-event Lineup Status
page: https://kanterella.com/05000397/LER-2D1990-2D003-2C_-3Aon_900126-2CHPCS_Sys_Pump_Suction_Valve_Switchover_Occurred_During_Performance_of_Procedure_for_Draining_Ref_Leg.Caused_by_Plant_Configuration.Sy…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1990-003, :on 900126,HPCS Sys Pump Suction Valve Switchover Occurred During Performance of Procedure for Draining Ref Leg.Caused by Plant Configuration.Sys Restored to pre-event Lineup Status

LER-1990-014, :on 900703,HPCS Sys Pump Suction Switchover from Condensate Storage Tanks to Suppression Pool Occurred Due to Suppression Pool High Water Level Condition.Caused by Procedural Inadequacy.Procedures Modified
type: Subject
label: 05000397/LER-1990-014, :on 900703,HPCS Sys Pump Suction Switchover from Condensate Storage Tanks to Suppression Pool Occurred Due to Suppression Pool High Water Level Condition.Caused by Procedural Inadequacy.Procedures Modified
page: https://kanterella.com/05000397/LER-2D1990-2D014-2C_-3Aon_900703-2CHPCS_Sys_Pump_Suction_Switchover_from_Condensate_Storage_Tanks_to_Suppression_Pool_Occurred_Due_to_Suppression_Pool_High_Water_Level_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1990-014, :on 900703,HPCS Sys Pump Suction Switchover from Condensate Storage Tanks to Suppression Pool Occurred Due to Suppression Pool High Water Level Condition.Caused by Procedural Inadequacy.Procedures Modified

Automatic Depressurization Sys.Caused by Personnel Error. Training Improved & Visibility Increased
type: Subject
label: 05000397/LER-1989-035, :on 890817,reactor Scram Occurred During Surveillance Testing of Reactor Level Instrument Associated W/Automatic Depressurization Sys.Caused by Personnel Error. Training Improved & Visibility Increased
page: https://kanterella.com/05000397/LER-2D1989-2D035-2C_-3Aon_890817-2Creactor_Scram_Occurred_During_Surveillance_Testing_of_Reactor_Level_Instrument_Associated_W/Automatic_Depressurization_Sys.Caused_by_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-035, :on 890817,reactor Scram Occurred During Surveillance Testing of Reactor Level Instrument Associated W/Automatic Depressurization Sys.Caused by Personnel Error. Training Improved & Visibility Increased

LER-1989-034, :on 890811,six Class 1E 480 Volt Ac Motor Control Ctrs Declared Inoperable Due to Design Deficiency. Caused by Exclusion of Fault Tripping Coordination. Distribution Sys to Be Evaluated
type: Subject
label: 05000397/LER-1989-034, :on 890811,six Class 1E 480 Volt Ac Motor Control Ctrs Declared Inoperable Due to Design Deficiency. Caused by Exclusion of Fault Tripping Coordination. Distribution Sys to Be Evaluated
page: https://kanterella.com/05000397/LER-2D1989-2D034-2C_-3Aon_890811-2Csix_Class_1E_480_Volt_Ac_Motor_Control_Ctrs_Declared_Inoperable_Due_to_Design_Deficiency._Caused_by_Exclusion_of_Fault_Tripping_Coord…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-034, :on 890811,six Class 1E 480 Volt Ac Motor Control Ctrs Declared Inoperable Due to Design Deficiency. Caused by Exclusion of Fault Tripping Coordination. Distribution Sys to Be Evaluated

LER-1989-024, :on 890614,secondary Containment Bypass Leakage Found Greater than Allowed by Design Basis.Caused by Equipment Design Deficiency.Check Valves in Common Discharge Line of CRD Pump Installed to Prevent Leakage
type: Subject
label: 05000397/LER-1989-024, :on 890614,secondary Containment Bypass Leakage Found Greater than Allowed by Design Basis.Caused by Equipment Design Deficiency.Check Valves in Common Discharge Line of CRD Pump Installed to Prevent Leakage
page: https://kanterella.com/05000397/LER-2D1989-2D024-2C_-3Aon_890614-2Csecondary_Containment_Bypass_Leakage_Found_Greater_than_Allowed_by_Design_Basis.Caused_by_Equipment_Design_Deficiency.Check_Valves_in…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-024, :on 890614,secondary Containment Bypass Leakage Found Greater than Allowed by Design Basis.Caused by Equipment Design Deficiency.Check Valves in Common Discharge Line of CRD Pump Installed to Prevent Leakage

Diesel Generator Fuel Oil Testing Showed No Requirement to Check for Water in Day Tanks.Caused by Less than Adequate Procedure Preparation
type: Subject
label: 05000397/LER-1990-007, :on 900314,review of Plant Procedures Associated W/Diesel Generator Fuel Oil Testing Showed No Requirement to Check for Water in Day Tanks.Caused by Less than Adequate Procedure Preparation
page: https://kanterella.com/05000397/LER-2D1990-2D007-2C_-3Aon_900314-2Creview_of_Plant_Procedures_Associated_W/Diesel_Generator_Fuel_Oil_Testing_Showed_No_Requirement_to_Check_for_Water_in_Day_Tanks.Cause…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1990-007, :on 900314,review of Plant Procedures Associated W/Diesel Generator Fuel Oil Testing Showed No Requirement to Check for Water in Day Tanks.Caused by Less than Adequate Procedure Preparation

LER-1989-023, :on 890531,ESF Isolations & Actuations Occurred Due to Loss of Reactor Protection Sys Bus During Testing. Caused by Personnel Error.Logic Sys Functional Test Procedure Revised.Test Engineer Counseled
type: Subject
label: 05000397/LER-1989-023, :on 890531,ESF Isolations & Actuations Occurred Due to Loss of Reactor Protection Sys Bus During Testing. Caused by Personnel Error.Logic Sys Functional Test Procedure Revised.Test Engineer Counseled
page: https://kanterella.com/05000397/LER-2D1989-2D023-2C_-3Aon_890531-2CESF_Isolations_-26_Actuations_Occurred_Due_to_Loss_of_Reactor_Protection_Sys_Bus_During_Testing._Caused_by_Personnel_Error.Logic_Sys_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-023, :on 890531,ESF Isolations & Actuations Occurred Due to Loss of Reactor Protection Sys Bus During Testing. Caused by Personnel Error.Logic Sys Functional Test Procedure Revised.Test Engineer Counseled

LER-1989-025, :on 890617 & 18,three Separate But Related Events Occurred Which Caused ESF Isolations & Actuations During Excess Flow Check Valve Testing.Caused by Inadequate Procedure.Procedure Modified
type: Subject
label: 05000397/LER-1989-025, :on 890617 & 18,three Separate But Related Events Occurred Which Caused ESF Isolations & Actuations During Excess Flow Check Valve Testing.Caused by Inadequate Procedure.Procedure Modified
page: https://kanterella.com/05000397/LER-2D1989-2D025-2C_-3Aon_890617_-26_18-2Cthree_Separate_But_Related_Events_Occurred_Which_Caused_ESF_Isolations_-26_Actuations_During_Excess_Flow_Check_Valve_Testing.C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-025, :on 890617 & 18,three Separate But Related Events Occurred Which Caused ESF Isolations & Actuations During Excess Flow Check Valve Testing.Caused by Inadequate Procedure.Procedure Modified

LER-1989-007, :on 890316,discovered That Two Tech Spec Surveillance Procedures Re Fire Protection Zones for Standby Svc Water Pump Houses & Power Generation Control Cabinet Inconsistent.Action Statements Implemented
type: Subject
label: 05000397/LER-1989-007, :on 890316,discovered That Two Tech Spec Surveillance Procedures Re Fire Protection Zones for Standby Svc Water Pump Houses & Power Generation Control Cabinet Inconsistent.Action Statements Implemented
page: https://kanterella.com/05000397/LER-2D1989-2D007-2C_-3Aon_890316-2Cdiscovered_That_Two_Tech_Spec_Surveillance_Procedures_Re_Fire_Protection_Zones_for_Standby_Svc_Water_Pump_Houses_-26_Power_Generation…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-007, :on 890316,discovered That Two Tech Spec Surveillance Procedures Re Fire Protection Zones for Standby Svc Water Pump Houses & Power Generation Control Cabinet Inconsistent.Action Statements Implemented

LER-1989-013, :on 890508,preliminary Calculations Indicated Potential Common Mode Failure of Redundant 120-volt safety- Related Devices.Caused by Less than Adequate Design Criteria to Limit Voltage Drops.Procedure Revised
type: Subject
label: 05000397/LER-1989-013, :on 890508,preliminary Calculations Indicated Potential Common Mode Failure of Redundant 120-volt safety- Related Devices.Caused by Less than Adequate Design Criteria to Limit Voltage Drops.Procedure Revised
page: https://kanterella.com/05000397/LER-2D1989-2D013-2C_-3Aon_890508-2Cpreliminary_Calculations_Indicated_Potential_Common_Mode_Failure_of_Redundant_120-2Dvolt_safety-2D_Related_Devices.Caused_by_Less_tha…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-013, :on 890508,preliminary Calculations Indicated Potential Common Mode Failure of Redundant 120-volt safety- Related Devices.Caused by Less than Adequate Design Criteria to Limit Voltage Drops.Procedure Revised

O Safety Evaluation Being Performed.Caused by Lack of Procedures Controlling Use of Mobile Cranes.Crane Removed from Area
type: Subject
label: 05000397/LER-1989-004, :on 890226,mobile Crane Brought within Reach of safety-related Structures & Components W/O Safety Evaluation Being Performed.Caused by Lack of Procedures Controlling Use of Mobile Cranes.Crane Removed from Area
page: https://kanterella.com/05000397/LER-2D1989-2D004-2C_-3Aon_890226-2Cmobile_Crane_Brought_within_Reach_of_safety-2Drelated_Structures_-26_Components_W/O_Safety_Evaluation_Being_Performed.Caused_by_Lack_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-004, :on 890226,mobile Crane Brought within Reach of safety-related Structures & Components W/O Safety Evaluation Being Performed.Caused by Lack of Procedures Controlling Use of Mobile Cranes.Crane Removed from Area

Ler Not Issued within 30 Days After Determination
type: Subject
label: 05000397/LER-1989-008, :on 890419,discovered That on 881202,Tech Spec Amend Request Submitted to NRC Describing Diesel Generator Trip Bypass Verification That Had Not Been Performed W/Ler Not Issued within 30 Days After Determination
page: https://kanterella.com/05000397/LER-2D1989-2D008-2C_-3Aon_890419-2Cdiscovered_That_on_881202-2CTech_Spec_Amend_Request_Submitted_to_NRC_Describing_Diesel_Generator_Trip_Bypass_Verification_That_Had_No…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-008, :on 890419,discovered That on 881202,Tech Spec Amend Request Submitted to NRC Describing Diesel Generator Trip Bypass Verification That Had Not Been Performed W/Ler Not Issued within 30 Days After Determination

LER-1989-016, :on 890514,reactor Operator Inadvertently Tripped Div 1 & 2 Offsite Power Supply Feeders Resulting in Loss of Power to Buses SM-7 & SM-4.Caused by Inadvertent Removal of Transformer Fuses.Fuses Reinserted
type: Subject
label: 05000397/LER-1989-016, :on 890514,reactor Operator Inadvertently Tripped Div 1 & 2 Offsite Power Supply Feeders Resulting in Loss of Power to Buses SM-7 & SM-4.Caused by Inadvertent Removal of Transformer Fuses.Fuses Reinserted
page: https://kanterella.com/05000397/LER-2D1989-2D016-2C_-3Aon_890514-2Creactor_Operator_Inadvertently_Tripped_Div_1_-26_2_Offsite_Power_Supply_Feeders_Resulting_in_Loss_of_Power_to_Buses_SM-2D7_-26_SM-2D4…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-016, :on 890514,reactor Operator Inadvertently Tripped Div 1 & 2 Offsite Power Supply Feeders Resulting in Loss of Power to Buses SM-7 & SM-4.Caused by Inadvertent Removal of Transformer Fuses.Fuses Reinserted

LER-1989-009, :on 880529,full Reactor Protection Sys Actuation Occurred Twice During Performance Testing.Caused by Inadequate Preoperational Test & trouble-shooting Procedures.Preoperational Procedure Revised
type: Subject
label: 05000397/LER-1989-009, :on 880529,full Reactor Protection Sys Actuation Occurred Twice During Performance Testing.Caused by Inadequate Preoperational Test & trouble-shooting Procedures.Preoperational Procedure Revised
page: https://kanterella.com/05000397/LER-2D1989-2D009-2C_-3Aon_880529-2Cfull_Reactor_Protection_Sys_Actuation_Occurred_Twice_During_Performance_Testing.Caused_by_Inadequate_Preoperational_Test_-26_trouble-…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-009, :on 880529,full Reactor Protection Sys Actuation Occurred Twice During Performance Testing.Caused by Inadequate Preoperational Test & trouble-shooting Procedures.Preoperational Procedure Revised

05000397/LER-1989-021, :on 890527,electrical Protection Assembly Breaker Tripped Causing Loss of Power to Reactor Protection Sys Bus B.Cause Unknown.Upgraded Breaker Equipment Will Be Installed
type: Subject
page: https://kanterella.com/05000397/LER-2D1989-2D021-2C_-3Aon_890527-2Celectrical_Protection_Assembly_Breaker_Tripped_Causing_Loss_of_Power_to_Reactor_Protection_Sys_Bus_B.Cause_Unknown.Upgraded_Breaker_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-021, :on 890527,electrical Protection Assembly Breaker Tripped Causing Loss of Power to Reactor Protection Sys Bus B.Cause Unknown.Upgraded Breaker Equipment Will Be Installed

LER-1989-029, :on 890703,RWCU & RCIC Sys Isolation Occurred When RWCU-V-1 Closed as Part of Group 7 Nuclear Steam Supply Shutoff Sys Isolation.Caused by Inadequate Preparation & Review of Surveillance Test Procedure
type: Subject
label: 05000397/LER-1989-029, :on 890703,RWCU & RCIC Sys Isolation Occurred When RWCU-V-1 Closed as Part of Group 7 Nuclear Steam Supply Shutoff Sys Isolation.Caused by Inadequate Preparation & Review of Surveillance Test Procedure
page: https://kanterella.com/05000397/LER-2D1989-2D029-2C_-3Aon_890703-2CRWCU_-26_RCIC_Sys_Isolation_Occurred_When_RWCU-2DV-2D1_Closed_as_Part_of_Group_7_Nuclear_Steam_Supply_Shutoff_Sys_Isolation.Caused_by…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-029, :on 890703,RWCU & RCIC Sys Isolation Occurred When RWCU-V-1 Closed as Part of Group 7 Nuclear Steam Supply Shutoff Sys Isolation.Caused by Inadequate Preparation & Review of Surveillance Test Procedure

05000397/LER-1989-018, :on 890522,reactor Protection Sys (RPS) a motor-generator Set Failed Resulting in Loss of Power to RPS Bus A.Caused by Component Failure.Motor Replaced
type: Subject
page: https://kanterella.com/05000397/LER-2D1989-2D018-2C_-3Aon_890522-2Creactor_Protection_Sys_-28RPS-29_a_motor-2Dgenerator_Set_Failed_Resulting_in_Loss_of_Power_to_RPS_Bus_A.Caused_by_Component_Failure.M…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-018, :on 890522,reactor Protection Sys (RPS) a motor-generator Set Failed Resulting in Loss of Power to RPS Bus A.Caused by Component Failure.Motor Replaced

LER-1989-020, :on 890527 & 0605,during Local Leak Rate Testing,Valve RHR-V-9 Automatically Isolated.Caused by Procedural Inadequacy & Inadequate Corrective Action Following Second Event.Procedure Modified
type: Subject
label: 05000397/LER-1989-020, :on 890527 & 0605,during Local Leak Rate Testing,Valve RHR-V-9 Automatically Isolated.Caused by Procedural Inadequacy & Inadequate Corrective Action Following Second Event.Procedure Modified
page: https://kanterella.com/05000397/LER-2D1989-2D020-2C_-3Aon_890527_-26_0605-2Cduring_Local_Leak_Rate_Testing-2CValve_RHR-2DV-2D9_Automatically_Isolated.Caused_by_Procedural_Inadequacy_-26_Inadequate_Cor…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-020, :on 890527 & 0605,during Local Leak Rate Testing,Valve RHR-V-9 Automatically Isolated.Caused by Procedural Inadequacy & Inadequate Corrective Action Following Second Event.Procedure Modified

LER-1989-012, :on 890505,unplanned Reactor Scram Occurred During Performance of Reactor Protection Sys Logic Sys Functional Test.Caused by Procedural Inadequacy.Procedure Will Be Revised to Provide Specific Resetting
type: Subject
label: 05000397/LER-1989-012, :on 890505,unplanned Reactor Scram Occurred During Performance of Reactor Protection Sys Logic Sys Functional Test.Caused by Procedural Inadequacy.Procedure Will Be Revised to Provide Specific Resetting
page: https://kanterella.com/05000397/LER-2D1989-2D012-2C_-3Aon_890505-2Cunplanned_Reactor_Scram_Occurred_During_Performance_of_Reactor_Protection_Sys_Logic_Sys_Functional_Test.Caused_by_Procedural_Inadequa…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-012, :on 890505,unplanned Reactor Scram Occurred During Performance of Reactor Protection Sys Logic Sys Functional Test.Caused by Procedural Inadequacy.Procedure Will Be Revised to Provide Specific Resetting

LER-1989-027, :on 890630,determined That Two Seismic Supports Missing on PASS Containment Isolation Valves.Caused by Inadequate Work Practices & Training of Project Personnel. Tech Spec Action Statement 3.6.1 Entered
type: Subject
label: 05000397/LER-1989-027, :on 890630,determined That Two Seismic Supports Missing on PASS Containment Isolation Valves.Caused by Inadequate Work Practices & Training of Project Personnel. Tech Spec Action Statement 3.6.1 Entered
page: https://kanterella.com/05000397/LER-2D1989-2D027-2C_-3Aon_890630-2Cdetermined_That_Two_Seismic_Supports_Missing_on_PASS_Containment_Isolation_Valves.Caused_by_Inadequate_Work_Practices_-26_Training_of…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-027, :on 890630,determined That Two Seismic Supports Missing on PASS Containment Isolation Valves.Caused by Inadequate Work Practices & Training of Project Personnel. Tech Spec Action Statement 3.6.1 Entered

LER-1989-014, :on 890509,full Reactor Protection Sys Actuation Occurred.Caused by Accidental Movement of Local Power Range Monitor Cables.Scram Reset & Importance of Tying Cables Away from Working Area Stressed
type: Subject
label: 05000397/LER-1989-014, :on 890509,full Reactor Protection Sys Actuation Occurred.Caused by Accidental Movement of Local Power Range Monitor Cables.Scram Reset & Importance of Tying Cables Away from Working Area Stressed
page: https://kanterella.com/05000397/LER-2D1989-2D014-2C_-3Aon_890509-2Cfull_Reactor_Protection_Sys_Actuation_Occurred.Caused_by_Accidental_Movement_of_Local_Power_Range_Monitor_Cables.Scram_Reset_-26_Impo…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-014, :on 890509,full Reactor Protection Sys Actuation Occurred.Caused by Accidental Movement of Local Power Range Monitor Cables.Scram Reset & Importance of Tying Cables Away from Working Area Stressed

LER-1989-030, :on 890210,HPCS Suction Valve from Suppression Pool Failed to Fully Open During Surveillance Procedure. Caused by Motor Operator HPCS-MO-15 Mfg Design Defect.Tech Spec Action Statements Entered & Valve Closed
type: Subject
label: 05000397/LER-1989-030, :on 890210,HPCS Suction Valve from Suppression Pool Failed to Fully Open During Surveillance Procedure. Caused by Motor Operator HPCS-MO-15 Mfg Design Defect.Tech Spec Action Statements Entered & Valve Closed
page: https://kanterella.com/05000397/LER-2D1989-2D030-2C_-3Aon_890210-2CHPCS_Suction_Valve_from_Suppression_Pool_Failed_to_Fully_Open_During_Surveillance_Procedure._Caused_by_Motor_Operator_HPCS-2DMO-2D15_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-030, :on 890210,HPCS Suction Valve from Suppression Pool Failed to Fully Open During Surveillance Procedure. Caused by Motor Operator HPCS-MO-15 Mfg Design Defect.Tech Spec Action Statements Entered & Valve Closed

LER-1989-017, :on 890520,outboard RHR Shutdown Cooling Valve Automatically Isolated,Causing Loss of Shutdown Cooling. Caused by Removal of Relay by Contractor Maint Electrician Installing Mod to Leak Detection Sys
type: Subject
label: 05000397/LER-1989-017, :on 890520,outboard RHR Shutdown Cooling Valve Automatically Isolated,Causing Loss of Shutdown Cooling. Caused by Removal of Relay by Contractor Maint Electrician Installing Mod to Leak Detection Sys
page: https://kanterella.com/05000397/LER-2D1989-2D017-2C_-3Aon_890520-2Coutboard_RHR_Shutdown_Cooling_Valve_Automatically_Isolated-2CCausing_Loss_of_Shutdown_Cooling._Caused_by_Removal_of_Relay_by_Contract…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-017, :on 890520,outboard RHR Shutdown Cooling Valve Automatically Isolated,Causing Loss of Shutdown Cooling. Caused by Removal of Relay by Contractor Maint Electrician Installing Mod to Leak Detection Sys

Potential Defective Switches.Caused by Design Problem.Investigation & Evaluation of Switch Problems Immediately Initiated.Part 21 Related
type: Subject
label: 05000397/LER-1988-017, :on 880615,problems W/Limitorque Models SMB-000 & SMB-00 Discovered W/Potential Defective Switches.Caused by Design Problem.Investigation & Evaluation of Switch Problems Immediately Initiated.Part 21 Related
page: https://kanterella.com/05000397/LER-2D1988-2D017-2C_-3Aon_880615-2Cproblems_W/Limitorque_Models_SMB-2D000_-26_SMB-2D00_Discovered_W/Potential_Defective_Switches.Caused_by_Design_Problem.Investigation_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-017, :on 880615,problems W/Limitorque Models SMB-000 & SMB-00 Discovered W/Potential Defective Switches.Caused by Design Problem.Investigation & Evaluation of Switch Problems Immediately Initiated.Part 21 Related

LER-1989-026, :on 890619,testing Confirmed That Selected Steam Tunnel Penetrations Could Fail to Perform as Pressure Boundary Following Design Basis Main Steamline Break.Caused by Inadequate Design Mgt.Part 21 Related
type: Subject
label: 05000397/LER-1989-026, :on 890619,testing Confirmed That Selected Steam Tunnel Penetrations Could Fail to Perform as Pressure Boundary Following Design Basis Main Steamline Break.Caused by Inadequate Design Mgt.Part 21 Related
page: https://kanterella.com/05000397/LER-2D1989-2D026-2C_-3Aon_890619-2Ctesting_Confirmed_That_Selected_Steam_Tunnel_Penetrations_Could_Fail_to_Perform_as_Pressure_Boundary_Following_Design_Basis_Main_Stea…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-026, :on 890619,testing Confirmed That Selected Steam Tunnel Penetrations Could Fail to Perform as Pressure Boundary Following Design Basis Main Steamline Break.Caused by Inadequate Design Mgt.Part 21 Related

05000397/LER-1990-024, :on 900907,diesel Generator Started on Undervoltage Due to Voltage Disturbances
type: Subject
page: https://kanterella.com/05000397/LER-2D1990-2D024-2C_-3Aon_900907-2Cdiesel_Generator_Started_on_Undervoltage_Due_to_Voltage_Disturbances
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1990-024, :on 900907,diesel Generator Started on Undervoltage Due to Voltage Disturbances

LER-1989-022, :on 890530,loss of Secondary Containment During Core Alterations Due to Unisolatable Lines Occurred.Caused by Simultaneous Activities.Rhr Heat Exchanger Isolation Valves Closed to Reestablish Integrity
type: Subject
label: 05000397/LER-1989-022, :on 890530,loss of Secondary Containment During Core Alterations Due to Unisolatable Lines Occurred.Caused by Simultaneous Activities.Rhr Heat Exchanger Isolation Valves Closed to Reestablish Integrity
page: https://kanterella.com/05000397/LER-2D1989-2D022-2C_-3Aon_890530-2Closs_of_Secondary_Containment_During_Core_Alterations_Due_to_Unisolatable_Lines_Occurred.Caused_by_Simultaneous_Activities.Rhr_Heat_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1989-022, :on 890530,loss of Secondary Containment During Core Alterations Due to Unisolatable Lines Occurred.Caused by Simultaneous Activities.Rhr Heat Exchanger Isolation Valves Closed to Reestablish Integrity

LER-1988-024, :on 880703,single Primary Containment Monitor Intermittently Exceeded 150 F Temp & Time Limit.Cause Contributed to Leaking Main Steamline Safety Relief Valves & Leaking Tailpipe Vacuum Breaker Valves
type: Subject
label: 05000397/LER-1988-024, :on 880703,single Primary Containment Monitor Intermittently Exceeded 150 F Temp & Time Limit.Cause Contributed to Leaking Main Steamline Safety Relief Valves & Leaking Tailpipe Vacuum Breaker Valves
page: https://kanterella.com/05000397/LER-2D1988-2D024-2C_-3Aon_880703-2Csingle_Primary_Containment_Monitor_Intermittently_Exceeded_150_F_Temp_-26_Time_Limit.Cause_Contributed_to_Leaking_Main_Steamline_Safe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-024, :on 880703,single Primary Containment Monitor Intermittently Exceeded 150 F Temp & Time Limit.Cause Contributed to Leaking Main Steamline Safety Relief Valves & Leaking Tailpipe Vacuum Breaker Valves

LER-1988-034, :on 880909,pipe Failure Caused by Introduction of Liquid Nitrogen Into Primary Containment Supply Purge. Inerting Nitrogen Supply Valve & Containment Supply Purge Shut to Terminate Containment Inerting
type: Subject
label: 05000397/LER-1988-034, :on 880909,pipe Failure Caused by Introduction of Liquid Nitrogen Into Primary Containment Supply Purge. Inerting Nitrogen Supply Valve & Containment Supply Purge Shut to Terminate Containment Inerting
page: https://kanterella.com/05000397/LER-2D1988-2D034-2C_-3Aon_880909-2Cpipe_Failure_Caused_by_Introduction_of_Liquid_Nitrogen_Into_Primary_Containment_Supply_Purge._Inerting_Nitrogen_Supply_Valve_-26_Cont…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-034, :on 880909,pipe Failure Caused by Introduction of Liquid Nitrogen Into Primary Containment Supply Purge. Inerting Nitrogen Supply Valve & Containment Supply Purge Shut to Terminate Containment Inerting

LER-1988-022, :on 880616,violation of Fire Zone in Radwaste Bldg Cable Spreading Room.Caused by Missing thermo-lag Insulation Due to Personnel Error.Outline of 20 Ft non- Combustible Zone Will Be Taped on Floor
type: Subject
label: 05000397/LER-1988-022, :on 880616,violation of Fire Zone in Radwaste Bldg Cable Spreading Room.Caused by Missing thermo-lag Insulation Due to Personnel Error.Outline of 20 Ft non- Combustible Zone Will Be Taped on Floor
page: https://kanterella.com/05000397/LER-2D1988-2D022-2C_-3Aon_880616-2Cviolation_of_Fire_Zone_in_Radwaste_Bldg_Cable_Spreading_Room.Caused_by_Missing_thermo-2Dlag_Insulation_Due_to_Personnel_Error.Outline…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-022, :on 880616,violation of Fire Zone in Radwaste Bldg Cable Spreading Room.Caused by Missing thermo-lag Insulation Due to Personnel Error.Outline of 20 Ft non- Combustible Zone Will Be Taped on Floor

O Mod or Protection.Caused by Inadequate Design by Architect Engineer.Areas Placed on Hourly Fire Tour
type: Subject
label: 05000397/LER-1988-026, :on 880715,determined That Sensing Line Support Hangers Would Not Withstand Design Basis Fire W/O Mod or Protection.Caused by Inadequate Design by Architect Engineer.Areas Placed on Hourly Fire Tour
page: https://kanterella.com/05000397/LER-2D1988-2D026-2C_-3Aon_880715-2Cdetermined_That_Sensing_Line_Support_Hangers_Would_Not_Withstand_Design_Basis_Fire_W/O_Mod_or_Protection.Caused_by_Inadequate_Design_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-026, :on 880715,determined That Sensing Line Support Hangers Would Not Withstand Design Basis Fire W/O Mod or Protection.Caused by Inadequate Design by Architect Engineer.Areas Placed on Hourly Fire Tour

LER-1987-032, :on 870602,radiation Monitor REM-21WL-3541 Sample Chamber Instead of REM-21WS-354 Drained for Disconnection Leaving Monitor Inoperable.Caused by Personnel Error.Procedure HPP-495 Prepared
type: Subject
label: 05000400/LER-1987-032, :on 870602,radiation Monitor REM-21WL-3541 Sample Chamber Instead of REM-21WS-354 Drained for Disconnection Leaving Monitor Inoperable.Caused by Personnel Error.Procedure HPP-495 Prepared
page: https://kanterella.com/05000400/LER-2D1987-2D032-2C_-3Aon_870602-2Cradiation_Monitor_REM-2D21WL-2D3541_Sample_Chamber_Instead_of_REM-2D21WS-2D354_Drained_for_Disconnection_Leaving_Monitor_Inoperable.C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000400/LER-1987-032, :on 870602,radiation Monitor REM-21WL-3541 Sample Chamber Instead of REM-21WS-354 Drained for Disconnection Leaving Monitor Inoperable.Caused by Personnel Error.Procedure HPP-495 Prepared

LER-1988-002, :on 880122,discovered RCIC Pump Suction Line Failed to Meet Containment Isolation & Single Failure Design Criteria.Caused by Ae Design Error.Check Valve Installed & Ltr Re Error Sent to B&R.Part 21 Related
type: Subject
label: 05000397/LER-1988-002, :on 880122,discovered RCIC Pump Suction Line Failed to Meet Containment Isolation & Single Failure Design Criteria.Caused by Ae Design Error.Check Valve Installed & Ltr Re Error Sent to B&R.Part 21 Related
page: https://kanterella.com/05000397/LER-2D1988-2D002-2C_-3Aon_880122-2Cdiscovered_RCIC_Pump_Suction_Line_Failed_to_Meet_Containment_Isolation_-26_Single_Failure_Design_Criteria.Caused_by_Ae_Design_Error.C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-002, :on 880122,discovered RCIC Pump Suction Line Failed to Meet Containment Isolation & Single Failure Design Criteria.Caused by Ae Design Error.Check Valve Installed & Ltr Re Error Sent to B&R.Part 21 Related

LER-1988-019, :on 880527,determined That Control Room Emergency Filtration Sys Actuation Occurred on 880520.Caused by Technician Failure to Reset Trip Logic During Response Time Test Due to Inadequate Procedure
type: Subject
label: 05000397/LER-1988-019, :on 880527,determined That Control Room Emergency Filtration Sys Actuation Occurred on 880520.Caused by Technician Failure to Reset Trip Logic During Response Time Test Due to Inadequate Procedure
page: https://kanterella.com/05000397/LER-2D1988-2D019-2C_-3Aon_880527-2Cdetermined_That_Control_Room_Emergency_Filtration_Sys_Actuation_Occurred_on_880520.Caused_by_Technician_Failure_to_Reset_Trip_Logic_D…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-019, :on 880527,determined That Control Room Emergency Filtration Sys Actuation Occurred on 880520.Caused by Technician Failure to Reset Trip Logic During Response Time Test Due to Inadequate Procedure

LER-1988-006, :on 880213,series of Reactor Pressure Vessel Level Transients Resulted in Low Reactor Protective Sys Actuation Following Manual Scram.Caused by Procedural Inadequacy.Procedures Modified
type: Subject
label: 05000397/LER-1988-006, :on 880213,series of Reactor Pressure Vessel Level Transients Resulted in Low Reactor Protective Sys Actuation Following Manual Scram.Caused by Procedural Inadequacy.Procedures Modified
page: https://kanterella.com/05000397/LER-2D1988-2D006-2C_-3Aon_880213-2Cseries_of_Reactor_Pressure_Vessel_Level_Transients_Resulted_in_Low_Reactor_Protective_Sys_Actuation_Following_Manual_Scram.Caused_by_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-006, :on 880213,series of Reactor Pressure Vessel Level Transients Resulted in Low Reactor Protective Sys Actuation Following Manual Scram.Caused by Procedural Inadequacy.Procedures Modified

LER-1988-009, :on 880401,standby Gas Treatment Sys Tech Spec Surveillances Not Performed within Time Limits.Caused by Personnel Error.Personnel Counseled & Procedure Revised to Provide Guidance When Surveillance Exceeded
type: Subject
label: 05000397/LER-1988-009, :on 880401,standby Gas Treatment Sys Tech Spec Surveillances Not Performed within Time Limits.Caused by Personnel Error.Personnel Counseled & Procedure Revised to Provide Guidance When Surveillance Exceeded
page: https://kanterella.com/05000397/LER-2D1988-2D009-2C_-3Aon_880401-2Cstandby_Gas_Treatment_Sys_Tech_Spec_Surveillances_Not_Performed_within_Time_Limits.Caused_by_Personnel_Error.Personnel_Counseled_-26_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-009, :on 880401,standby Gas Treatment Sys Tech Spec Surveillances Not Performed within Time Limits.Caused by Personnel Error.Personnel Counseled & Procedure Revised to Provide Guidance When Surveillance Exceeded

LER-1988-007, :on 880214,rupture of Reactor Bldg Roof Occurred Due to HVAC Overpressurization Transient.Caused by Personnel Error.Equipment Operator Training Program & Investigative Process Being Developed
type: Subject
label: 05000397/LER-1988-007, :on 880214,rupture of Reactor Bldg Roof Occurred Due to HVAC Overpressurization Transient.Caused by Personnel Error.Equipment Operator Training Program & Investigative Process Being Developed
page: https://kanterella.com/05000397/LER-2D1988-2D007-2C_-3Aon_880214-2Crupture_of_Reactor_Bldg_Roof_Occurred_Due_to_HVAC_Overpressurization_Transient.Caused_by_Personnel_Error.Equipment_Operator_Training_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-007, :on 880214,rupture of Reactor Bldg Roof Occurred Due to HVAC Overpressurization Transient.Caused by Personnel Error.Equipment Operator Training Program & Investigative Process Being Developed

LER-1988-003, :on 880204,reactor Scram Due to Main Steam Line Isolation Occurred.Caused by Personnel Error.Rcic Sys Manually Initiated to Restore & Maintain Water Level. Procedure Revised & Technicians Counseled
type: Subject
label: 05000397/LER-1988-003, :on 880204,reactor Scram Due to Main Steam Line Isolation Occurred.Caused by Personnel Error.Rcic Sys Manually Initiated to Restore & Maintain Water Level. Procedure Revised & Technicians Counseled
page: https://kanterella.com/05000397/LER-2D1988-2D003-2C_-3Aon_880204-2Creactor_Scram_Due_to_Main_Steam_Line_Isolation_Occurred.Caused_by_Personnel_Error.Rcic_Sys_Manually_Initiated_to_Restore_-26_Maintain…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-003, :on 880204,reactor Scram Due to Main Steam Line Isolation Occurred.Caused by Personnel Error.Rcic Sys Manually Initiated to Restore & Maintain Water Level. Procedure Revised & Technicians Counseled

LER-1987-033, :on 871218,plant Tech Spec Sections 4.0.5 Re ASME Valve in-service Testing Requirements & 3.6.3 Concerning Containment Valve Operability Not Met.Caused by Personnel Error.No Corrective Action
type: Subject
label: 05000397/LER-1987-033, :on 871218,plant Tech Spec Sections 4.0.5 Re ASME Valve in-service Testing Requirements & 3.6.3 Concerning Containment Valve Operability Not Met.Caused by Personnel Error.No Corrective Action
page: https://kanterella.com/05000397/LER-2D1987-2D033-2C_-3Aon_871218-2Cplant_Tech_Spec_Sections_4.0.5_Re_ASME_Valve_in-2Dservice_Testing_Requirements_-26_3.6.3_Concerning_Containment_Valve_Operability_Not…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1987-033, :on 871218,plant Tech Spec Sections 4.0.5 Re ASME Valve in-service Testing Requirements & 3.6.3 Concerning Containment Valve Operability Not Met.Caused by Personnel Error.No Corrective Action

LER-1988-001, :on 880118,following Plant Shut Down,Automatic Reactor Protective Sys Actuation Occurred Due to Low Reactor Pressure Vessel Water Level Condition.Caused by Procedural Inadequacy.Plant Procedures Revised
type: Subject
label: 05000397/LER-1988-001, :on 880118,following Plant Shut Down,Automatic Reactor Protective Sys Actuation Occurred Due to Low Reactor Pressure Vessel Water Level Condition.Caused by Procedural Inadequacy.Plant Procedures Revised
page: https://kanterella.com/05000397/LER-2D1988-2D001-2C_-3Aon_880118-2Cfollowing_Plant_Shut_Down-2CAutomatic_Reactor_Protective_Sys_Actuation_Occurred_Due_to_Low_Reactor_Pressure_Vessel_Water_Level_Condit…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000397/LER-1988-001, :on 880118,following Plant Shut Down,Automatic Reactor Protective Sys Actuation Occurred Due to Low Reactor Pressure Vessel Water Level Condition.Caused by Procedural Inadequacy.Plant Procedures Revised

LER-1993-004, :on 930707,Main Feedwater Isolations Occurred Due to Secondary Side & Condensate Feedwater Pressure Transient.Returned Feedwater Regulating Valves to pre-event Controls Configuration
type: Subject
label: 05000244/LER-1993-004, :on 930707,Main Feedwater Isolations Occurred Due to Secondary Side & Condensate Feedwater Pressure Transient.Returned Feedwater Regulating Valves to pre-event Controls Configuration
page: https://kanterella.com/05000244/LER-2D1993-2D004-2C_-3Aon_930707-2CMain_Feedwater_Isolations_Occurred_Due_to_Secondary_Side_-26_Condensate_Feedwater_Pressure_Transient.Returned_Feedwater_Regulating_Va…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000244/LER-1993-004, :on 930707,Main Feedwater Isolations Occurred Due to Secondary Side & Condensate Feedwater Pressure Transient.Returned Feedwater Regulating Valves to pre-event Controls Configuration

LER-1992-006, :on 920518,main FW Isolations Occurred on SG a Due to Overfeeding SG a While in Manual Control.Caused by Heater Drain Tank Level Control Sys Problem.Administrative Controls Instituted to Ensure Valve Not Open
type: Subject
label: 05000244/LER-1992-006, :on 920518,main FW Isolations Occurred on SG a Due to Overfeeding SG a While in Manual Control.Caused by Heater Drain Tank Level Control Sys Problem.Administrative Controls Instituted to Ensure Valve Not Open
page: https://kanterella.com/05000244/LER-2D1992-2D006-2C_-3Aon_920518-2Cmain_FW_Isolations_Occurred_on_SG_a_Due_to_Overfeeding_SG_a_While_in_Manual_Control.Caused_by_Heater_Drain_Tank_Level_Control_Sys_Pro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000244/LER-1992-006, :on 920518,main FW Isolations Occurred on SG a Due to Overfeeding SG a While in Manual Control.Caused by Heater Drain Tank Level Control Sys Problem.Administrative Controls Instituted to Ensure Valve Not Open

05000244/LER-1992-005, :on 920420,determined That 242 Tubes in a SG & 216 Tubes in B SG Required Corrective Action Due to Tube Degradation.Affected Tubes Either Sleeved or Plugged.W/
type: Subject
page: https://kanterella.com/05000244/LER-2D1992-2D005-2C_-3Aon_920420-2Cdetermined_That_242_Tubes_in_a_SG_-26_216_Tubes_in_B_SG_Required_Corrective_Action_Due_to_Tube_Degradation.Affected_Tubes_Either_Slee…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000244/LER-1992-005, :on 920420,determined That 242 Tubes in a SG & 216 Tubes in B SG Required Corrective Action Due to Tube Degradation.Affected Tubes Either Sleeved or Plugged.W/

05000244/LER-1993-003, :on 930328,discovered Failures of Safeguard Svc Water Sys During Planned Maint.Caused by Design & Operating Environ.Replaced Affected Valves W/Qualified Spares.W/
type: Subject
page: https://kanterella.com/05000244/LER-2D1993-2D003-2C_-3Aon_930328-2Cdiscovered_Failures_of_Safeguard_Svc_Water_Sys_During_Planned_Maint.Caused_by_Design_-26_Operating_Environ.Replaced_Affected_Valves_W…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000244/LER-1993-003, :on 930328,discovered Failures of Safeguard Svc Water Sys During Planned Maint.Caused by Design & Operating Environ.Replaced Affected Valves W/Qualified Spares.W/

LER-1992-003, :on 920229,reactor Trip Occurred Due to Lo Lo Level in Steam Generator B.Caused by Plugged Instrument Tubing for Feedwater Pump a Seal Injection Differential Pressure Switch.Turbine Flushed
type: Subject
label: 05000244/LER-1992-003, :on 920229,reactor Trip Occurred Due to Lo Lo Level in Steam Generator B.Caused by Plugged Instrument Tubing for Feedwater Pump a Seal Injection Differential Pressure Switch.Turbine Flushed
page: https://kanterella.com/05000244/LER-2D1992-2D003-2C_-3Aon_920229-2Creactor_Trip_Occurred_Due_to_Lo_Lo_Level_in_Steam_Generator_B.Caused_by_Plugged_Instrument_Tubing_for_Feedwater_Pump_a_Seal_Injection…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000244/LER-1992-003, :on 920229,reactor Trip Occurred Due to Lo Lo Level in Steam Generator B.Caused by Plugged Instrument Tubing for Feedwater Pump a Seal Injection Differential Pressure Switch.Turbine Flushed

LER-1999-004-01, :on 990912,noted That MSSV Surveillance Was Outside of TS Requirements.Caused by Setpoint Drift.Subject MSSVs Are Being Refurbished & Retested Prior to Unit Startup from SL1-16 Refueling Outage.With
type: Subject
label: 05000335/LER-1999-004-01, :on 990912,noted That MSSV Surveillance Was Outside of TS Requirements.Caused by Setpoint Drift.Subject MSSVs Are Being Refurbished & Retested Prior to Unit Startup from SL1-16 Refueling Outage.With
page: https://kanterella.com/05000335/LER-2D1999-2D004-2D01-2C_-3Aon_990912-2Cnoted_That_MSSV_Surveillance_Was_Outside_of_TS_Requirements.Caused_by_Setpoint_Drift.Subject_MSSVs_Are_Being_Refurbished_-26_Ret…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1999-004-01, :on 990912,noted That MSSV Surveillance Was Outside of TS Requirements.Caused by Setpoint Drift.Subject MSSVs Are Being Refurbished & Retested Prior to Unit Startup from SL1-16 Refueling Outage.With

LER-1999-003, :on 990406,ECCS Suction Header Leak Resulted in Both ECCS Trains Being Inoperable & Entry Into TS 3.0.3. Caused by Chloride Induced OD Stress Corrosion Cracking of Piping.Made Code Repairs & Coated Piping.With
type: Subject
label: 05000389/LER-1999-003, :on 990406,ECCS Suction Header Leak Resulted in Both ECCS Trains Being Inoperable & Entry Into TS 3.0.3. Caused by Chloride Induced OD Stress Corrosion Cracking of Piping.Made Code Repairs & Coated Piping.With
page: https://kanterella.com/05000389/LER-2D1999-2D003-2C_-3Aon_990406-2CECCS_Suction_Header_Leak_Resulted_in_Both_ECCS_Trains_Being_Inoperable_-26_Entry_Into_TS_3.0.3._Caused_by_Chloride_Induced_OD_Stress_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1999-003, :on 990406,ECCS Suction Header Leak Resulted in Both ECCS Trains Being Inoperable & Entry Into TS 3.0.3. Caused by Chloride Induced OD Stress Corrosion Cracking of Piping.Made Code Repairs & Coated Piping.With

LER-1999-006, :on 990605,sub-critical Reactor Trip Occurred Due to Inadvertent MSIV Opening.Caused by Personnel Error. Provided Operation Supervision Instruction to Operating Crews,Stand Down Meetings & Operator Aids.With
type: Subject
label: 05000389/LER-1999-006, :on 990605,sub-critical Reactor Trip Occurred Due to Inadvertent MSIV Opening.Caused by Personnel Error. Provided Operation Supervision Instruction to Operating Crews,Stand Down Meetings & Operator Aids.With
page: https://kanterella.com/05000389/LER-2D1999-2D006-2C_-3Aon_990605-2Csub-2Dcritical_Reactor_Trip_Occurred_Due_to_Inadvertent_MSIV_Opening.Caused_by_Personnel_Error._Provided_Operation_Supervision_Instru…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1999-006, :on 990605,sub-critical Reactor Trip Occurred Due to Inadvertent MSIV Opening.Caused by Personnel Error. Provided Operation Supervision Instruction to Operating Crews,Stand Down Meetings & Operator Aids.With

LER-1998-009, :on 981223,noted That Facility Operated Outside of Design Basis.Caused by non-conservative MSLB Analysis Inputs.Will Review SR Component Differences Between Units & Will re-baseline LTOP Analysis.With
type: Subject
label: 05000335/LER-1998-009, :on 981223,noted That Facility Operated Outside of Design Basis.Caused by non-conservative MSLB Analysis Inputs.Will Review SR Component Differences Between Units & Will re-baseline LTOP Analysis.With
page: https://kanterella.com/05000335/LER-2D1998-2D009-2C_-3Aon_981223-2Cnoted_That_Facility_Operated_Outside_of_Design_Basis.Caused_by_non-2Dconservative_MSLB_Analysis_Inputs.Will_Review_SR_Component_Diffe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1998-009, :on 981223,noted That Facility Operated Outside of Design Basis.Caused by non-conservative MSLB Analysis Inputs.Will Review SR Component Differences Between Units & Will re-baseline LTOP Analysis.With

Or Repaired.With
type: Subject
label: 05000389/LER-1997-002, :on 981204,containment Sump Debris Screen Was Not IAW Design.Caused by Inadequate C/As for Sump Screen Anamolies.All Identified Sump Screen Deficiencies Were Dispositioned &/Or Repaired.With
page: https://kanterella.com/05000389/LER-2D1997-2D002-2C_-3Aon_981204-2Ccontainment_Sump_Debris_Screen_Was_Not_IAW_Design.Caused_by_Inadequate_C/As_for_Sump_Screen_Anamolies.All_Identified_Sump_Screen_Defi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1997-002, :on 981204,containment Sump Debris Screen Was Not IAW Design.Caused by Inadequate C/As for Sump Screen Anamolies.All Identified Sump Screen Deficiencies Were Dispositioned &/Or Repaired.With

LER-1998-010, :on 981207,RCS Boron Sample Frequency Required by Ts,Was Exceeded by Twelve Minutes.Caused by Personnel Error.Equipment Clearance Order Was Lifted to Draw Required Sample & Operations Procedure Was Changed.With
type: Subject
label: 05000389/LER-1998-010, :on 981207,RCS Boron Sample Frequency Required by Ts,Was Exceeded by Twelve Minutes.Caused by Personnel Error.Equipment Clearance Order Was Lifted to Draw Required Sample & Operations Procedure Was Changed.With
page: https://kanterella.com/05000389/LER-2D1998-2D010-2C_-3Aon_981207-2CRCS_Boron_Sample_Frequency_Required_by_Ts-2CWas_Exceeded_by_Twelve_Minutes.Caused_by_Personnel_Error.Equipment_Clearance_Order_Was_Li…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1998-010, :on 981207,RCS Boron Sample Frequency Required by Ts,Was Exceeded by Twelve Minutes.Caused by Personnel Error.Equipment Clearance Order Was Lifted to Draw Required Sample & Operations Procedure Was Changed.With

LER-1999-002, :on 990311,SG ECT Error Caused Operation with Condition Prohibited by Ts.Caused by Deficiencies in Data Analysis Guideline Instructions.Licensee Will Change Data Analysis Guidelines for Lead Analysts.With
type: Subject
label: 05000389/LER-1999-002, :on 990311,SG ECT Error Caused Operation with Condition Prohibited by Ts.Caused by Deficiencies in Data Analysis Guideline Instructions.Licensee Will Change Data Analysis Guidelines for Lead Analysts.With
page: https://kanterella.com/05000389/LER-2D1999-2D002-2C_-3Aon_990311-2CSG_ECT_Error_Caused_Operation_with_Condition_Prohibited_by_Ts.Caused_by_Deficiencies_in_Data_Analysis_Guideline_Instructions.Licensee…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1999-002, :on 990311,SG ECT Error Caused Operation with Condition Prohibited by Ts.Caused by Deficiencies in Data Analysis Guideline Instructions.Licensee Will Change Data Analysis Guidelines for Lead Analysts.With

05000335/LER-1998-008, :on 981008,inadequate Reactor Protection Sys Trip Bypass TS Was Noted.Caused by Poorly Worded Ts. Submitted LAR to Clarify Power Requirements for High Rate of Power Trips.With
type: Subject
page: https://kanterella.com/05000335/LER-2D1998-2D008-2C_-3Aon_981008-2Cinadequate_Reactor_Protection_Sys_Trip_Bypass_TS_Was_Noted.Caused_by_Poorly_Worded_Ts._Submitted_LAR_to_Clarify_Power_Requirements_fo…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1998-008, :on 981008,inadequate Reactor Protection Sys Trip Bypass TS Was Noted.Caused by Poorly Worded Ts. Submitted LAR to Clarify Power Requirements for High Rate of Power Trips.With

05000389/LER-1998-008-01, :on 981118,missed TS SG U Tube Insp.Caused by Encoding Errors While Using Remote Positioning Fixtures.All SG Tube Surveyed.With
type: Subject
page: https://kanterella.com/05000389/LER-2D1998-2D008-2D01-2C_-3Aon_981118-2Cmissed_TS_SG_U_Tube_Insp.Caused_by_Encoding_Errors_While_Using_Remote_Positioning_Fixtures.All_SG_Tube_Surveyed.With
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1998-008-01, :on 981118,missed TS SG U Tube Insp.Caused by Encoding Errors While Using Remote Positioning Fixtures.All SG Tube Surveyed.With

LER-1998-003-01, :on 980326,discovered Containment Pressure Instrumentation Design Single Failure Vulnerability.Caused by Inadequate Design by Personnel Error.Removed RPS & ESFAS Containment Pressure Bypass Keys Immediately
type: Subject
label: 05000389/LER-1998-003-01, :on 980326,discovered Containment Pressure Instrumentation Design Single Failure Vulnerability.Caused by Inadequate Design by Personnel Error.Removed RPS & ESFAS Containment Pressure Bypass Keys Immediately
page: https://kanterella.com/05000389/LER-2D1998-2D003-2D01-2C_-3Aon_980326-2Cdiscovered_Containment_Pressure_Instrumentation_Design_Single_Failure_Vulnerability.Caused_by_Inadequate_Design_by_Personnel_Err…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1998-003-01, :on 980326,discovered Containment Pressure Instrumentation Design Single Failure Vulnerability.Caused by Inadequate Design by Personnel Error.Removed RPS & ESFAS Containment Pressure Bypass Keys Immediately

05000335/LER-1998-006, :on 980421,missed EDG Fuel Oil Sample Surveillance Was Noted.Caused by Personnel Error.Revised Fuel Oil Sampling Service Purchase Order & Revised Site Procedure
type: Subject
page: https://kanterella.com/05000335/LER-2D1998-2D006-2C_-3Aon_980421-2Cmissed_EDG_Fuel_Oil_Sample_Surveillance_Was_Noted.Caused_by_Personnel_Error.Revised_Fuel_Oil_Sampling_Service_Purchase_Order_-26_Revi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1998-006, :on 980421,missed EDG Fuel Oil Sample Surveillance Was Noted.Caused by Personnel Error.Revised Fuel Oil Sampling Service Purchase Order & Revised Site Procedure

O Available Oxygen Analyzers,Which Is Prohibited by Ts.Caused by Inadequate Licensee Review of License Amend. Oxygen Analyzer Recalibrated
type: Subject
label: 05000389/LER-1998-004-01, :on 980430,discovered Waste Gas Decay Tank Operation W/O Available Oxygen Analyzers,Which Is Prohibited by Ts.Caused by Inadequate Licensee Review of License Amend. Oxygen Analyzer Recalibrated
page: https://kanterella.com/05000389/LER-2D1998-2D004-2D01-2C_-3Aon_980430-2Cdiscovered_Waste_Gas_Decay_Tank_Operation_W/O_Available_Oxygen_Analyzers-2CWhich_Is_Prohibited_by_Ts.Caused_by_Inadequate_Licens…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1998-004-01, :on 980430,discovered Waste Gas Decay Tank Operation W/O Available Oxygen Analyzers,Which Is Prohibited by Ts.Caused by Inadequate Licensee Review of License Amend. Oxygen Analyzer Recalibrated

LER-1998-007-01, :on 980918,identified Discrepancies Between Fire Protection Design Requirements & Field Conditions. Caused by Inadequate Translation & Implementation of Fire Protection Requirements.Procedures Revised.With
type: Subject
label: 05000389/LER-1998-007-01, :on 980918,identified Discrepancies Between Fire Protection Design Requirements & Field Conditions. Caused by Inadequate Translation & Implementation of Fire Protection Requirements.Procedures Revised.With
page: https://kanterella.com/05000389/LER-2D1998-2D007-2D01-2C_-3Aon_980918-2Cidentified_Discrepancies_Between_Fire_Protection_Design_Requirements_-26_Field_Conditions._Caused_by_Inadequate_Translation_-26_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1998-007-01, :on 980918,identified Discrepancies Between Fire Protection Design Requirements & Field Conditions. Caused by Inadequate Translation & Implementation of Fire Protection Requirements.Procedures Revised.With

LER-1998-005, :on 980305,identified Two Conditions That Were Outside App R Design Bases.Caused by Design Oversight During Development of Original App R Safe SD Design.Established 30 Minute Roving Fire Watches & Provided Training
type: Subject
label: 05000335/LER-1998-005, :on 980305,identified Two Conditions That Were Outside App R Design Bases.Caused by Design Oversight During Development of Original App R Safe SD Design.Established 30 Minute Roving Fire Watches & Provided Training
page: https://kanterella.com/05000335/LER-2D1998-2D005-2C_-3Aon_980305-2Cidentified_Two_Conditions_That_Were_Outside_App_R_Design_Bases.Caused_by_Design_Oversight_During_Development_of_Original_App_R_Safe_S…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1998-005, :on 980305,identified Two Conditions That Were Outside App R Design Bases.Caused by Design Oversight During Development of Original App R Safe SD Design.Established 30 Minute Roving Fire Watches & Provided Training

LER-1998-005, :on 980807,discovered That New MOV Methodology Caused Past PORV Block Valve Operability Problem.Caused by Inadequacies in Original Vendor MOV Methodology.Planned Valve Mods Will Be Implemented During Cycle 11 1998 Outage
type: Subject
label: 05000389/LER-1998-005, :on 980807,discovered That New MOV Methodology Caused Past PORV Block Valve Operability Problem.Caused by Inadequacies in Original Vendor MOV Methodology.Planned Valve Mods Will Be Implemented During Cycle 11 1998 Outage
page: https://kanterella.com/05000389/LER-2D1998-2D005-2C_-3Aon_980807-2Cdiscovered_That_New_MOV_Methodology_Caused_Past_PORV_Block_Valve_Operability_Problem.Caused_by_Inadequacies_in_Original_Vendor_MOV_Me…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1998-005, :on 980807,discovered That New MOV Methodology Caused Past PORV Block Valve Operability Problem.Caused by Inadequacies in Original Vendor MOV Methodology.Planned Valve Mods Will Be Implemented During Cycle 11 1998 Outage

05000389/LER-1998-006-01, :on 980918,inadvertent Afas Actuation Was Noted.Caused by Degradation of Multiple Afas Power Supplies. Replaced Afas Power Supplies & Revised Procedures.With
type: Subject
page: https://kanterella.com/05000389/LER-2D1998-2D006-2D01-2C_-3Aon_980918-2Cinadvertent_Afas_Actuation_Was_Noted.Caused_by_Degradation_of_Multiple_Afas_Power_Supplies._Replaced_Afas_Power_Supplies_-26_Rev…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1998-006-01, :on 980918,inadvertent Afas Actuation Was Noted.Caused by Degradation of Multiple Afas Power Supplies. Replaced Afas Power Supplies & Revised Procedures.With

LER-1997-007, :on 970502,reactor Coolant Pump Oil Collection Sys Was Outside App R Design Bases.Identified Leak Sites Were Repaired & Mods to RCP Oil Collection Sys to Capture Any Future Leakage from Areas
type: Subject
label: 05000335/LER-1997-007, :on 970502,reactor Coolant Pump Oil Collection Sys Was Outside App R Design Bases.Identified Leak Sites Were Repaired & Mods to RCP Oil Collection Sys to Capture Any Future Leakage from Areas
page: https://kanterella.com/05000335/LER-2D1997-2D007-2C_-3Aon_970502-2Creactor_Coolant_Pump_Oil_Collection_Sys_Was_Outside_App_R_Design_Bases.Identified_Leak_Sites_Were_Repaired_-26_Mods_to_RCP_Oil_Collec…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1997-007, :on 970502,reactor Coolant Pump Oil Collection Sys Was Outside App R Design Bases.Identified Leak Sites Were Repaired & Mods to RCP Oil Collection Sys to Capture Any Future Leakage from Areas

05000335/LER-1997-003, :on 970304,automatic RT Resulted from Loss of Electrical Power to 1A2 Rc Pump.Rcp Breaker Was Replaced & Pump Was Returned to Svc
type: Subject
page: https://kanterella.com/05000335/LER-2D1997-2D003-2C_-3Aon_970304-2Cautomatic_RT_Resulted_from_Loss_of_Electrical_Power_to_1A2_Rc_Pump.Rcp_Breaker_Was_Replaced_-26_Pump_Was_Returned_to_Svc
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1997-003, :on 970304,automatic RT Resulted from Loss of Electrical Power to 1A2 Rc Pump.Rcp Breaker Was Replaced & Pump Was Returned to Svc

05000335/LER-1998-007, :on 980630,inadequate Procedure May Have Resulted in SBO Recovery Complications.Caused by Inadequate Procedures.Attached Caution Tags to Appropriate Control Switches
type: Subject
page: https://kanterella.com/05000335/LER-2D1998-2D007-2C_-3Aon_980630-2Cinadequate_Procedure_May_Have_Resulted_in_SBO_Recovery_Complications.Caused_by_Inadequate_Procedures.Attached_Caution_Tags_to_Appropr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1998-007, :on 980630,inadequate Procedure May Have Resulted in SBO Recovery Complications.Caused by Inadequate Procedures.Attached Caution Tags to Appropriate Control Switches

LER-1996-011, :on 960817,discovered Failure of Oxygen Analyzer.Caused by Degraded Sensor Membrane in Oxygen Detector.Calibr,Tested & Returned Oxygen Analyzer to Service & Replaced Sensor Membrane
type: Subject
label: 05000335/LER-1996-011, :on 960817,discovered Failure of Oxygen Analyzer.Caused by Degraded Sensor Membrane in Oxygen Detector.Calibr,Tested & Returned Oxygen Analyzer to Service & Replaced Sensor Membrane
page: https://kanterella.com/05000335/LER-2D1996-2D011-2C_-3Aon_960817-2Cdiscovered_Failure_of_Oxygen_Analyzer.Caused_by_Degraded_Sensor_Membrane_in_Oxygen_Detector.Calibr-2CTested_-26_Returned_Oxygen_Analy…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1996-011, :on 960817,discovered Failure of Oxygen Analyzer.Caused by Degraded Sensor Membrane in Oxygen Detector.Calibr,Tested & Returned Oxygen Analyzer to Service & Replaced Sensor Membrane

05000335/LER-1997-010, :on 971027,inadvertent Core Alteration Prohibited by TSs Were Noted Due to Stuck Cea.Caused by Personnel Error.Cea 24 Was Dislodged & Transferred to Spent Pool for Insp
type: Subject
page: https://kanterella.com/05000335/LER-2D1997-2D010-2C_-3Aon_971027-2Cinadvertent_Core_Alteration_Prohibited_by_TSs_Were_Noted_Due_to_Stuck_Cea.Caused_by_Personnel_Error.Cea_24_Was_Dislodged_-26_Transfer…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1997-010, :on 971027,inadvertent Core Alteration Prohibited by TSs Were Noted Due to Stuck Cea.Caused by Personnel Error.Cea 24 Was Dislodged & Transferred to Spent Pool for Insp

LER-1997-001, :on 970221,identified Deficiencies in Post Accident Sampling Systems (Pass).Caused by Failure of Personnel to Specify Drawing Update Requirements.Added PASS to List of Maint Rule Systems
type: Subject
label: 05000335/LER-1997-001, :on 970221,identified Deficiencies in Post Accident Sampling Systems (Pass).Caused by Failure of Personnel to Specify Drawing Update Requirements.Added PASS to List of Maint Rule Systems
page: https://kanterella.com/05000335/LER-2D1997-2D001-2C_-3Aon_970221-2Cidentified_Deficiencies_in_Post_Accident_Sampling_Systems_-28Pass-29.Caused_by_Failure_of_Personnel_to_Specify_Drawing_Update_Require…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1997-001, :on 970221,identified Deficiencies in Post Accident Sampling Systems (Pass).Caused by Failure of Personnel to Specify Drawing Update Requirements.Added PASS to List of Maint Rule Systems

LER-1997-007-02, :on 971008,inoperable Containment Cooling Fan Resulted in Operation of Facility Outside Design Basis. Caused by non-cognitive Personnel Error.Ccs Operation Was Revised & Issued on 971013
type: Subject
label: 05000389/LER-1997-007-02, :on 971008,inoperable Containment Cooling Fan Resulted in Operation of Facility Outside Design Basis. Caused by non-cognitive Personnel Error.Ccs Operation Was Revised & Issued on 971013
page: https://kanterella.com/05000389/LER-2D1997-2D007-2D02-2C_-3Aon_971008-2Cinoperable_Containment_Cooling_Fan_Resulted_in_Operation_of_Facility_Outside_Design_Basis._Caused_by_non-2Dcognitive_Personnel_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1997-007-02, :on 971008,inoperable Containment Cooling Fan Resulted in Operation of Facility Outside Design Basis. Caused by non-cognitive Personnel Error.Ccs Operation Was Revised & Issued on 971013

05000389/LER-1997-003-02, :on 970521,determined Required Post Maint Open Stroke Test for Valve V3245,2B2 SIT Discharge Check Valve, Had Not Been Performed.Caused by Personnel Error.Procedure Revised
type: Subject
page: https://kanterella.com/05000389/LER-2D1997-2D003-2D02-2C_-3Aon_970521-2Cdetermined_Required_Post_Maint_Open_Stroke_Test_for_Valve_V3245-2C2B2_SIT_Discharge_Check_Valve-2C_Had_Not_Been_Performed.Caused…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1997-003-02, :on 970521,determined Required Post Maint Open Stroke Test for Valve V3245,2B2 SIT Discharge Check Valve, Had Not Been Performed.Caused by Personnel Error.Procedure Revised

LER-1996-004-02, :on 960923,operation Prohibited by TS Occurred. Caused by Cognitive Personnel Error.Fpl Verified That a Successful Stroke Time Surveillance Was Conducted on FCV-25-7 & FCV-25-8
type: Subject
label: 05000389/LER-1996-004-02, :on 960923,operation Prohibited by TS Occurred. Caused by Cognitive Personnel Error.Fpl Verified That a Successful Stroke Time Surveillance Was Conducted on FCV-25-7 & FCV-25-8
page: https://kanterella.com/05000389/LER-2D1996-2D004-2D02-2C_-3Aon_960923-2Coperation_Prohibited_by_TS_Occurred._Caused_by_Cognitive_Personnel_Error.Fpl_Verified_That_a_Successful_Stroke_Time_Surveillance…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1996-004-02, :on 960923,operation Prohibited by TS Occurred. Caused by Cognitive Personnel Error.Fpl Verified That a Successful Stroke Time Surveillance Was Conducted on FCV-25-7 & FCV-25-8

05000335/LER-1997-006, :on 970501,operation Was Prohibited by TS Due to Inadequately Tested Degraded Voltage Sys.Revised Unit 1 ESFAS Surveillance Test Procedure
type: Subject
page: https://kanterella.com/05000335/LER-2D1997-2D006-2C_-3Aon_970501-2Coperation_Was_Prohibited_by_TS_Due_to_Inadequately_Tested_Degraded_Voltage_Sys.Revised_Unit_1_ESFAS_Surveillance_Test_Procedure
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1997-006, :on 970501,operation Was Prohibited by TS Due to Inadequately Tested Degraded Voltage Sys.Revised Unit 1 ESFAS Surveillance Test Procedure

4 Actuation Logic Was Satisfactorily Performed on 961211
type: Subject
label: 05000389/LER-1996-007-02, :on 961211,operation Prohibited by TSs Occurred Due to Inadequate Surveillance of MSIS Actuation Logic. Testing of MSIS High Containment Pressure 2/4 Actuation Logic Was Satisfactorily Performed on 961211
page: https://kanterella.com/05000389/LER-2D1996-2D007-2D02-2C_-3Aon_961211-2Coperation_Prohibited_by_TSs_Occurred_Due_to_Inadequate_Surveillance_of_MSIS_Actuation_Logic._Testing_of_MSIS_High_Containment_Pr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1996-007-02, :on 961211,operation Prohibited by TSs Occurred Due to Inadequate Surveillance of MSIS Actuation Logic. Testing of MSIS High Containment Pressure 2/4 Actuation Logic Was Satisfactorily Performed on 961211

LER-1996-002-02, :on 960606,reactor Manually Tripped.Caused by Positioner Feedback Arm Failure on Main Generator Hydrogen Cooler Tcv.Mods Made to Hydrogen Cooler TCV to Eliminate Feedback Assembly & Reduce Vibration
type: Subject
label: 05000389/LER-1996-002-02, :on 960606,reactor Manually Tripped.Caused by Positioner Feedback Arm Failure on Main Generator Hydrogen Cooler Tcv.Mods Made to Hydrogen Cooler TCV to Eliminate Feedback Assembly & Reduce Vibration
page: https://kanterella.com/05000389/LER-2D1996-2D002-2D02-2C_-3Aon_960606-2Creactor_Manually_Tripped.Caused_by_Positioner_Feedback_Arm_Failure_on_Main_Generator_Hydrogen_Cooler_Tcv.Mods_Made_to_Hydrogen_C…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1996-002-02, :on 960606,reactor Manually Tripped.Caused by Positioner Feedback Arm Failure on Main Generator Hydrogen Cooler Tcv.Mods Made to Hydrogen Cooler TCV to Eliminate Feedback Assembly & Reduce Vibration

LER-1996-008-01, :on 960608,inadvertent Actuation of Safety Injection Actuation Signal & Containment Isolation Actuation Signal Occurred.Caused by Loss of Power Supply.Reviewed Power Supply Design & Conducted Visual Insp
type: Subject
label: 05000335/LER-1996-008-01, :on 960608,inadvertent Actuation of Safety Injection Actuation Signal & Containment Isolation Actuation Signal Occurred.Caused by Loss of Power Supply.Reviewed Power Supply Design & Conducted Visual Insp
page: https://kanterella.com/05000335/LER-2D1996-2D008-2D01-2C_-3Aon_960608-2Cinadvertent_Actuation_of_Safety_Injection_Actuation_Signal_-26_Containment_Isolation_Actuation_Signal_Occurred.Caused_by_Loss_of…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1996-008-01, :on 960608,inadvertent Actuation of Safety Injection Actuation Signal & Containment Isolation Actuation Signal Occurred.Caused by Loss of Power Supply.Reviewed Power Supply Design & Conducted Visual Insp

As:Rev of Maint Procedures to Include Verification That Plant Conditions IAW TS Requirements Prior to Installation
type: Subject
label: 05000335/LER-1996-009, :on 960710,operation Prohibited by Tss.Caused by Procedural Inadequacy & Personnel Error.C/As:Rev of Maint Procedures to Include Verification That Plant Conditions IAW TS Requirements Prior to Installation
page: https://kanterella.com/05000335/LER-2D1996-2D009-2C_-3Aon_960710-2Coperation_Prohibited_by_Tss.Caused_by_Procedural_Inadequacy_-26_Personnel_Error.C/As-3ARev_of_Maint_Procedures_to_Include_Verificatio…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1996-009, :on 960710,operation Prohibited by Tss.Caused by Procedural Inadequacy & Personnel Error.C/As:Rev of Maint Procedures to Include Verification That Plant Conditions IAW TS Requirements Prior to Installation

05000335/LER-1996-001-02, :on 960219,control Room Emergency Ventilation Sys Inoperable Due to Improper Sys Configuration Occurred. Caused by Inadequate Guidance & Work Controls.Cr Boundary Reviewed
type: Subject
page: https://kanterella.com/05000335/LER-2D1996-2D001-2D02-2C_-3Aon_960219-2Ccontrol_Room_Emergency_Ventilation_Sys_Inoperable_Due_to_Improper_Sys_Configuration_Occurred._Caused_by_Inadequate_Guidance_-26_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1996-001-02, :on 960219,control Room Emergency Ventilation Sys Inoperable Due to Improper Sys Configuration Occurred. Caused by Inadequate Guidance & Work Controls.Cr Boundary Reviewed

LER-1996-007-01, :on 960607,1B EDG Inadvertently Started Due to Procedural Inadequacy.Reset B Channel Cias & Reenergized 1B3 4,160 Bus from Startup Transformer.Changes Made to MPs 1-0970027 & 1-0970028
type: Subject
label: 05000335/LER-1996-007-01, :on 960607,1B EDG Inadvertently Started Due to Procedural Inadequacy.Reset B Channel Cias & Reenergized 1B3 4,160 Bus from Startup Transformer.Changes Made to MPs 1-0970027 & 1-0970028
page: https://kanterella.com/05000335/LER-2D1996-2D007-2D01-2C_-3Aon_960607-2C1B_EDG_Inadvertently_Started_Due_to_Procedural_Inadequacy.Reset_B_Channel_Cias_-26_Reenergized_1B3_4-2C160_Bus_from_Startup_Tran…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1996-007-01, :on 960607,1B EDG Inadvertently Started Due to Procedural Inadequacy.Reset B Channel Cias & Reenergized 1B3 4,160 Bus from Startup Transformer.Changes Made to MPs 1-0970027 & 1-0970028

LER-1996-002-01, :on 960222,control Element Assembly Dropped on Unit 1 During Periodic Testing.Caused by Failed Silicon Control Rectifier in Upper Gripper Power Switch Module.Power Switch Modules Replaced
type: Subject
label: 05000335/LER-1996-002-01, :on 960222,control Element Assembly Dropped on Unit 1 During Periodic Testing.Caused by Failed Silicon Control Rectifier in Upper Gripper Power Switch Module.Power Switch Modules Replaced
page: https://kanterella.com/05000335/LER-2D1996-2D002-2D01-2C_-3Aon_960222-2Ccontrol_Element_Assembly_Dropped_on_Unit_1_During_Periodic_Testing.Caused_by_Failed_Silicon_Control_Rectifier_in_Upper_Gripper_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1996-002-01, :on 960222,control Element Assembly Dropped on Unit 1 During Periodic Testing.Caused by Failed Silicon Control Rectifier in Upper Gripper Power Switch Module.Power Switch Modules Replaced

LER-1997-002, :on 970221,operation in Excess of Max Rated Thermal Power Occurred Due to Digital Data Processing Sys (Ddps) Calorimetric Error.Verified Acceptable Performance of Ddps Functions & Reviewed Software Mods
type: Subject
label: 05000335/LER-1997-002, :on 970221,operation in Excess of Max Rated Thermal Power Occurred Due to Digital Data Processing Sys (Ddps) Calorimetric Error.Verified Acceptable Performance of Ddps Functions & Reviewed Software Mods
page: https://kanterella.com/05000335/LER-2D1997-2D002-2C_-3Aon_970221-2Coperation_in_Excess_of_Max_Rated_Thermal_Power_Occurred_Due_to_Digital_Data_Processing_Sys_-28Ddps-29_Calorimetric_Error.Verified_Acc…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1997-002, :on 970221,operation in Excess of Max Rated Thermal Power Occurred Due to Digital Data Processing Sys (Ddps) Calorimetric Error.Verified Acceptable Performance of Ddps Functions & Reviewed Software Mods

05000389/LER-1997-002-03, :on 970518,containment Sump Debris Screen Was Not IAW Design Due to Gaps in Screen Encl.Performed SER to Document Containment Sump Design Requirements
type: Subject
page: https://kanterella.com/05000389/LER-2D1997-2D002-2D03-2C_-3Aon_970518-2Ccontainment_Sump_Debris_Screen_Was_Not_IAW_Design_Due_to_Gaps_in_Screen_Encl.Performed_SER_to_Document_Containment_Sump_Design_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1997-002-03, :on 970518,containment Sump Debris Screen Was Not IAW Design Due to Gaps in Screen Encl.Performed SER to Document Containment Sump Design Requirements

05000335/LER-1995-009, :on 951019,discovered TS Scheduled Surveillance Was Missed Due to Personnel Error.Operations Supervisor Issued Memo & Counseled & Disciplined Involved Individual
type: Subject
page: https://kanterella.com/05000335/LER-2D1995-2D009-2C_-3Aon_951019-2Cdiscovered_TS_Scheduled_Surveillance_Was_Missed_Due_to_Personnel_Error.Operations_Supervisor_Issued_Memo_-26_Counseled_-26_Discipline…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1995-009, :on 951019,discovered TS Scheduled Surveillance Was Missed Due to Personnel Error.Operations Supervisor Issued Memo & Counseled & Disciplined Involved Individual

05000335/LER-1996-003-01, :on 960224,containment Particulate & Gaseous Monitor Was OOS & Resulted in Condition Prohibited by TS Due to Personnel Error.Capgm Was Placed Back in Svc
type: Subject
page: https://kanterella.com/05000335/LER-2D1996-2D003-2D01-2C_-3Aon_960224-2Ccontainment_Particulate_-26_Gaseous_Monitor_Was_OOS_-26_Resulted_in_Condition_Prohibited_by_TS_Due_to_Personnel_Error.Capgm_Was_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1996-003-01, :on 960224,containment Particulate & Gaseous Monitor Was OOS & Resulted in Condition Prohibited by TS Due to Personnel Error.Capgm Was Placed Back in Svc

05000335/LER-1996-012, :on 960831,manual Reactor Trip Occurred.Caused by Increased Gas Accumulation in 1B Main Transformer. Insp of 1B Main Transformer Cooling Sys Performed & Oil Cooler Replaced
type: Subject
page: https://kanterella.com/05000335/LER-2D1996-2D012-2C_-3Aon_960831-2Cmanual_Reactor_Trip_Occurred.Caused_by_Increased_Gas_Accumulation_in_1B_Main_Transformer._Insp_of_1B_Main_Transformer_Cooling_Sys_Per…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1996-012, :on 960831,manual Reactor Trip Occurred.Caused by Increased Gas Accumulation in 1B Main Transformer. Insp of 1B Main Transformer Cooling Sys Performed & Oil Cooler Replaced

Undated Ltr
type: Subject
label: 05000335/LER-1995-010-01, :on 951116,manual Reactor Trip Occurred Due to Degraded 24 Volt Dc Power Supply to 1B SG Main Feedwater Controller.Tested & Replaced Power Supply for 1B Feedwater Controller.W/Undated Ltr
page: https://kanterella.com/05000335/LER-2D1995-2D010-2D01-2C_-3Aon_951116-2Cmanual_Reactor_Trip_Occurred_Due_to_Degraded_24_Volt_Dc_Power_Supply_to_1B_SG_Main_Feedwater_Controller.Tested_-26_Replaced_Powe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1995-010-01, :on 951116,manual Reactor Trip Occurred Due to Degraded 24 Volt Dc Power Supply to 1B SG Main Feedwater Controller.Tested & Replaced Power Supply for 1B Feedwater Controller.W/Undated Ltr

LER-1996-005-02, :on 961206,determined That Independent Operability of Trip Coils Had Not Been Adequately Tested. Caused by Inadequate Surveillance Procedure.Performed Testing of Coils & Revised Procedures
type: Subject
label: 05000389/LER-1996-005-02, :on 961206,determined That Independent Operability of Trip Coils Had Not Been Adequately Tested. Caused by Inadequate Surveillance Procedure.Performed Testing of Coils & Revised Procedures
page: https://kanterella.com/05000389/LER-2D1996-2D005-2D02-2C_-3Aon_961206-2Cdetermined_That_Independent_Operability_of_Trip_Coils_Had_Not_Been_Adequately_Tested._Caused_by_Inadequate_Surveillance_Procedur…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1996-005-02, :on 961206,determined That Independent Operability of Trip Coils Had Not Been Adequately Tested. Caused by Inadequate Surveillance Procedure.Performed Testing of Coils & Revised Procedures

LER-1992-004-02, :on 920521,relay Time Delay Settings Altered Due to Personnel Error.Remaining Load Sequence Timers on Both Units 1 & 2 Were Inspected to Ensure Thumbwheel Switches Were Set Correctly
type: Subject
label: 05000335/LER-1992-004-02, :on 920521,relay Time Delay Settings Altered Due to Personnel Error.Remaining Load Sequence Timers on Both Units 1 & 2 Were Inspected to Ensure Thumbwheel Switches Were Set Correctly
page: https://kanterella.com/05000335/LER-2D1992-2D004-2D02-2C_-3Aon_920521-2Crelay_Time_Delay_Settings_Altered_Due_to_Personnel_Error.Remaining_Load_Sequence_Timers_on_Both_Units_1_-26_2_Were_Inspected_to_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1992-004-02, :on 920521,relay Time Delay Settings Altered Due to Personnel Error.Remaining Load Sequence Timers on Both Units 1 & 2 Were Inspected to Ensure Thumbwheel Switches Were Set Correctly

O Required Vol in Boric Acid Makeup Tank.Caused by Personnel Error. Personnel Counseled & Pump Returned to Svc
type: Subject
label: 05000335/LER-1992-005-01, :on 920629,discovered That EDG 1B Declared Out of Svc on 920618 W/O Two Operable Flow Paths & W/O Required Vol in Boric Acid Makeup Tank.Caused by Personnel Error. Personnel Counseled & Pump Returned to Svc
page: https://kanterella.com/05000335/LER-2D1992-2D005-2D01-2C_-3Aon_920629-2Cdiscovered_That_EDG_1B_Declared_Out_of_Svc_on_920618_W/O_Two_Operable_Flow_Paths_-26_W/O_Required_Vol_in_Boric_Acid_Makeup_Tank.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1992-005-01, :on 920629,discovered That EDG 1B Declared Out of Svc on 920618 W/O Two Operable Flow Paths & W/O Required Vol in Boric Acid Makeup Tank.Caused by Personnel Error. Personnel Counseled & Pump Returned to Svc

05000335/LER-1990-004-01, :on 900228,inadvertent Partial Actuation of Train a Containment Isolation & Containment Spray Sys Occurred
type: Subject
page: https://kanterella.com/05000335/LER-2D1990-2D004-2D01-2C_-3Aon_900228-2Cinadvertent_Partial_Actuation_of_Train_a_Containment_Isolation_-26_Containment_Spray_Sys_Occurred
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1990-004-01, :on 900228,inadvertent Partial Actuation of Train a Containment Isolation & Containment Spray Sys Occurred

LER-1989-007-02, :on 890923,unit Experienced Dropped Control Element Assembly in Regulating Group 1.Most Probable Cause of Event Was Blown Fuse.Root Cause for Breaker Trip Not Conclusively Identified.Blown Fuse Replaced
type: Subject
label: 05000389/LER-1989-007-02, :on 890923,unit Experienced Dropped Control Element Assembly in Regulating Group 1.Most Probable Cause of Event Was Blown Fuse.Root Cause for Breaker Trip Not Conclusively Identified.Blown Fuse Replaced
page: https://kanterella.com/05000389/LER-2D1989-2D007-2D02-2C_-3Aon_890923-2Cunit_Experienced_Dropped_Control_Element_Assembly_in_Regulating_Group_1.Most_Probable_Cause_of_Event_Was_Blown_Fuse.Root_Cause_f…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1989-007-02, :on 890923,unit Experienced Dropped Control Element Assembly in Regulating Group 1.Most Probable Cause of Event Was Blown Fuse.Root Cause for Breaker Trip Not Conclusively Identified.Blown Fuse Replaced

LER-1988-008-02, :on 880920,power Supply Wire Lead Inadvertently Lifted When Personnel Removed Another Lead on Same Terminal Lug Connection Causing Reactor Trip.Caused by Personnel Error.Unit Stabilized in Hot Standby
type: Subject
label: 05000335/LER-1988-008-02, :on 880920,power Supply Wire Lead Inadvertently Lifted When Personnel Removed Another Lead on Same Terminal Lug Connection Causing Reactor Trip.Caused by Personnel Error.Unit Stabilized in Hot Standby
page: https://kanterella.com/05000335/LER-2D1988-2D008-2D02-2C_-3Aon_880920-2Cpower_Supply_Wire_Lead_Inadvertently_Lifted_When_Personnel_Removed_Another_Lead_on_Same_Terminal_Lug_Connection_Causing_Reactor_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1988-008-02, :on 880920,power Supply Wire Lead Inadvertently Lifted When Personnel Removed Another Lead on Same Terminal Lug Connection Causing Reactor Trip.Caused by Personnel Error.Unit Stabilized in Hot Standby

LER-1987-007-02, :on 871125,reactor Tripped on Loss of Load Due to Turbine Trip Caused by Failure of Main Generator Exciter Bearing.Root Cause Is Personnel Error.Electrical Maint Personnel Trained & Procedures Revised
type: Subject
label: 05000389/LER-1987-007-02, :on 871125,reactor Tripped on Loss of Load Due to Turbine Trip Caused by Failure of Main Generator Exciter Bearing.Root Cause Is Personnel Error.Electrical Maint Personnel Trained & Procedures Revised
page: https://kanterella.com/05000389/LER-2D1987-2D007-2D02-2C_-3Aon_871125-2Creactor_Tripped_on_Loss_of_Load_Due_to_Turbine_Trip_Caused_by_Failure_of_Main_Generator_Exciter_Bearing.Root_Cause_Is_Personnel_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1987-007-02, :on 871125,reactor Tripped on Loss of Load Due to Turbine Trip Caused by Failure of Main Generator Exciter Bearing.Root Cause Is Personnel Error.Electrical Maint Personnel Trained & Procedures Revised

LER-1986-011, :on 860709,emergency Diesel Generator 2A Taken Out of Svc Due to Failure to Meet Required Start Time.Caused by Excessive Tightening of Friction Clutch Locknut.Cooling Fan Shroud Removed & Fan Repositioned
type: Subject
label: 05000389/LER-1986-011, :on 860709,emergency Diesel Generator 2A Taken Out of Svc Due to Failure to Meet Required Start Time.Caused by Excessive Tightening of Friction Clutch Locknut.Cooling Fan Shroud Removed & Fan Repositioned
page: https://kanterella.com/05000389/LER-2D1986-2D011-2C_-3Aon_860709-2Cemergency_Diesel_Generator_2A_Taken_Out_of_Svc_Due_to_Failure_to_Meet_Required_Start_Time.Caused_by_Excessive_Tightening_of_Friction_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000389/LER-1986-011, :on 860709,emergency Diesel Generator 2A Taken Out of Svc Due to Failure to Meet Required Start Time.Caused by Excessive Tightening of Friction Clutch Locknut.Cooling Fan Shroud Removed & Fan Repositioned

LER-1987-005-02, :on 870307,discovered Leakage Rate Exceeding Allowable Leakage Per Tech Specs.Cause by Adjustment Criteria on Resilient Valve Seat on Penetration Inboard Isolation Valve.Valves Repaired
type: Subject
label: 05000335/LER-1987-005-02, :on 870307,discovered Leakage Rate Exceeding Allowable Leakage Per Tech Specs.Cause by Adjustment Criteria on Resilient Valve Seat on Penetration Inboard Isolation Valve.Valves Repaired
page: https://kanterella.com/05000335/LER-2D1987-2D005-2D02-2C_-3Aon_870307-2Cdiscovered_Leakage_Rate_Exceeding_Allowable_Leakage_Per_Tech_Specs.Cause_by_Adjustment_Criteria_on_Resilient_Valve_Seat_on_Penet…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1987-005-02, :on 870307,discovered Leakage Rate Exceeding Allowable Leakage Per Tech Specs.Cause by Adjustment Criteria on Resilient Valve Seat on Penetration Inboard Isolation Valve.Valves Repaired

LER-1987-016-02, :on 871029,reactor Tripped Due to Loss of Condensate Pump.Caused by Inadequate Operating Procedure. Procedure Being Revised.Plant Training Dept Will Review Loss of Condensate Pump
type: Subject
label: 05000335/LER-1987-016-02, :on 871029,reactor Tripped Due to Loss of Condensate Pump.Caused by Inadequate Operating Procedure. Procedure Being Revised.Plant Training Dept Will Review Loss of Condensate Pump
page: https://kanterella.com/05000335/LER-2D1987-2D016-2D02-2C_-3Aon_871029-2Creactor_Tripped_Due_to_Loss_of_Condensate_Pump.Caused_by_Inadequate_Operating_Procedure._Procedure_Being_Revised.Plant_Training_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000335/LER-1987-016-02, :on 871029,reactor Tripped Due to Loss of Condensate Pump.Caused by Inadequate Operating Procedure. Procedure Being Revised.Plant Training Dept Will Review Loss of Condensate Pump

05000410/LER-1990-021-01, :on 901026,TS Violation Re RHR Sys Valve Tests Not Included in Inservice Test Pump/Valve Program Plan Occurred
type: Subject
page: https://kanterella.com/05000410/LER-2D1990-2D021-2D01-2C_-3Aon_901026-2CTS_Violation_Re_RHR_Sys_Valve_Tests_Not_Included_in_Inservice_Test_Pump/Valve_Program_Plan_Occurred
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000410/LER-1990-021-01, :on 901026,TS Violation Re RHR Sys Valve Tests Not Included in Inservice Test Pump/Valve Program Plan Occurred

ML17229A690
type: Subject
page: https://kanterella.com/ML17229A690
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: ML17229A690

05000354/LER-2016-006, Regarding Mode Change Without B Channel Level Instrumentation Operable
type: Subject
page: https://kanterella.com/05000354/LER-2D2016-2D006-2C_Regarding_Mode_Change_Without_B_Channel_Level_Instrumentation_Operable
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000354/LER-2016-006, Regarding Mode Change Without B Channel Level Instrumentation Operable

05000321/LER-2016-003, Regarding Reactor Coolant System Piping Has Unacceptable Weld Indication Discovered During Refueling Outage
type: Subject
page: https://kanterella.com/05000321/LER-2D2016-2D003-2C_Regarding_Reactor_Coolant_System_Piping_Has_Unacceptable_Weld_Indication_Discovered_During_Refueling_Outage
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000321/LER-2016-003, Regarding Reactor Coolant System Piping Has Unacceptable Weld Indication Discovered During Refueling Outage

05000331/LER-2015-002, Regarding Unanalyzed Condition Due to Degraded Primary Containment Suppression Pool Coating
type: Subject
page: https://kanterella.com/05000331/LER-2D2015-2D002-2C_Regarding_Unanalyzed_Condition_Due_to_Degraded_Primary_Containment_Suppression_Pool_Coating
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000331/LER-2015-002, Regarding Unanalyzed Condition Due to Degraded Primary Containment Suppression Pool Coating

05000219/LER-2015-002, Regarding Reactor Scram Due to Digital Protective Relay System Lockout
type: Subject
page: https://kanterella.com/05000219/LER-2D2015-2D002-2C_Regarding_Reactor_Scram_Due_to_Digital_Protective_Relay_System_Lockout
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000219/LER-2015-002, Regarding Reactor Scram Due to Digital Protective Relay System Lockout

05000424/LER-2013-001, Unit 1, Regarding Failure to Comply with Technical Specification LCO 3.8.4
type: Subject
page: https://kanterella.com/05000424/LER-2D2013-2D001-2C_Unit_1-2C_Regarding_Failure_to_Comply_with_Technical_Specification_LCO_3.8.4
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000424/LER-2013-001, Unit 1, Regarding Failure to Comply with Technical Specification LCO 3.8.4

05000348/LER-2012-005, Joseph M Farley Nuclear Plant, Unit 1 Regarding Unit Shutdown Required by Technical Specification 3.8.1
type: Subject
page: https://kanterella.com/05000348/LER-2D2012-2D005-2C_Joseph_M_Farley_Nuclear_Plant-2C_Unit_1_Regarding_Unit_Shutdown_Required_by_Technical_Specification_3.8.1
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000348/LER-2012-005, Joseph M Farley Nuclear Plant, Unit 1 Regarding Unit Shutdown Required by Technical Specification 3.8.1

05000424/LER-2012-001, Regarding Seismically Qualified RWST Aligned to Non-Seismic Piping
type: Subject
page: https://kanterella.com/05000424/LER-2D2012-2D001-2C_Regarding_Seismically_Qualified_RWST_Aligned_to_Non-2DSeismic_Piping
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000424/LER-2012-001, Regarding Seismically Qualified RWST Aligned to Non-Seismic Piping

ML16223A653
type: Subject
page: https://kanterella.com/ML16223A653
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: ML16223A653

05000366/LER-2011-002, Regarding Corrosion Induced Bonding Results in Setpoint Drift for Multiple Safety Relief Valves
type: Subject
page: https://kanterella.com/05000366/LER-2D2011-2D002-2C_Regarding_Corrosion_Induced_Bonding_Results_in_Setpoint_Drift_for_Multiple_Safety_Relief_Valves
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000366/LER-2011-002, Regarding Corrosion Induced Bonding Results in Setpoint Drift for Multiple Safety Relief Valves

05000416/LER-2010-001, Regarding Automatic Reactor Scram on Decreasing Reactor Water Level Due to Inadvertent Reactor Feed Pump Trip
type: Subject
page: https://kanterella.com/05000416/LER-2D2010-2D001-2C_Regarding_Automatic_Reactor_Scram_on_Decreasing_Reactor_Water_Level_Due_to_Inadvertent_Reactor_Feed_Pump_Trip
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000416/LER-2010-001, Regarding Automatic Reactor Scram on Decreasing Reactor Water Level Due to Inadvertent Reactor Feed Pump Trip

05000374/LER-2009-001, Main Turbine Trip and Reactor Scram Due to Digital Electro-hydraulic Control Circuit Card Failure
type: Subject
page: https://kanterella.com/05000374/LER-2D2009-2D001-2C_Main_Turbine_Trip_and_Reactor_Scram_Due_to_Digital_Electro-2Dhydraulic_Control_Circuit_Card_Failure
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000374/LER-2009-001, Main Turbine Trip and Reactor Scram Due to Digital Electro-hydraulic Control Circuit Card Failure

05000321/LER-2008-004, Power Supply Card Failure Causes Loss of Feedwater Flow Resulting in Manual Reactor Scram
type: Subject
page: https://kanterella.com/05000321/LER-2D2008-2D004-2C_Power_Supply_Card_Failure_Causes_Loss_of_Feedwater_Flow_Resulting_in_Manual_Reactor_Scram
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000321/LER-2008-004, Power Supply Card Failure Causes Loss of Feedwater Flow Resulting in Manual Reactor Scram

05000321/LER-2007-002, Regarding ATTS Card Failure Results in High Pressure Coolant Injection System Isolation
type: Subject
page: https://kanterella.com/05000321/LER-2D2007-2D002-2C_Regarding_ATTS_Card_Failure_Results_in_High_Pressure_Coolant_Injection_System_Isolation
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000321/LER-2007-002, Regarding ATTS Card Failure Results in High Pressure Coolant Injection System Isolation

05000220/LER-2004-004, Regarding Manual Reactor Scram Due to Failure of 13 Feedwater Flow Control Valve Positioner
type: Subject
page: https://kanterella.com/05000220/LER-2D2004-2D004-2C_Regarding_Manual_Reactor_Scram_Due_to_Failure_of_13_Feedwater_Flow_Control_Valve_Positioner
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000220/LER-2004-004, Regarding Manual Reactor Scram Due to Failure of 13 Feedwater Flow Control Valve Positioner

05000220/LER-2003-004, Regarding Unplanned Inoperability of Emergency Cooling System Caused by Inadequate Review of Clearance for Replacement of Instrumentation Relay
type: Subject
page: https://kanterella.com/05000220/LER-2D2003-2D004-2C_Regarding_Unplanned_Inoperability_of_Emergency_Cooling_System_Caused_by_Inadequate_Review_of_Clearance_for_Replacement_of_Instrumentation_Relay
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000220/LER-2003-004, Regarding Unplanned Inoperability of Emergency Cooling System Caused by Inadequate Review of Clearance for Replacement of Instrumentation Relay

05000220/LER-2003-001, From Nine Mile Point, Unit 1 Regarding TS Cooldown Rate Exceeded During Required Cooldown for a Failed Solenoid Actuated Pressure
type: Subject
page: https://kanterella.com/05000220/LER-2D2003-2D001-2C_From_Nine_Mile_Point-2C_Unit_1_Regarding_TS_Cooldown_Rate_Exceeded_During_Required_Cooldown_for_a_Failed_Solenoid_Actuated_Pressure
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000220/LER-2003-001, From Nine Mile Point, Unit 1 Regarding TS Cooldown Rate Exceeded During Required Cooldown for a Failed Solenoid Actuated Pressure

05000220/LER-2002-002, Re Loss of One Control Rod Drive Pump Train Due to Circuit Breaker Failure
type: Subject
page: https://kanterella.com/05000220/LER-2D2002-2D002-2C_Re_Loss_of_One_Control_Rod_Drive_Pump_Train_Due_to_Circuit_Breaker_Failure
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000220/LER-2002-002, Re Loss of One Control Rod Drive Pump Train Due to Circuit Breaker Failure

05000425/LER-2002-001, Re Unstaked Capscrews Renders Residual Heat Removal Pump Inoperable
type: Subject
page: https://kanterella.com/05000425/LER-2D2002-2D001-2C_Re_Unstaked_Capscrews_Renders_Residual_Heat_Removal_Pump_Inoperable
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000425/LER-2002-001, Re Unstaked Capscrews Renders Residual Heat Removal Pump Inoperable

05000313/LER-2002-004, Arkansas Unit 1, Reactor Coolant System Pressure Boundary Leakage from a Fatigue Stress Crack of a Weld Connecting a Drain Line to a High Pressure Injection Line
type: Subject
page: https://kanterella.com/05000313/LER-2D2002-2D004-2C_Arkansas_Unit_1-2C_Reactor_Coolant_System_Pressure_Boundary_Leakage_from_a_Fatigue_Stress_Crack_of_a_Weld_Connecting_a_Drain_Line_to_a_High_Pressure…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000313/LER-2002-004, Arkansas Unit 1, Reactor Coolant System Pressure Boundary Leakage from a Fatigue Stress Crack of a Weld Connecting a Drain Line to a High Pressure Injection Line

05000313/LER-2002-001, Arkansas Unit 1 Main Steam Safety Valve as-Found Lift Settings Were Not within Technical Specification Limits
type: Subject
page: https://kanterella.com/05000313/LER-2D2002-2D001-2C_Arkansas_Unit_1_Main_Steam_Safety_Valve_as-2DFound_Lift_Settings_Were_Not_within_Technical_Specification_Limits
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000313/LER-2002-001, Arkansas Unit 1 Main Steam Safety Valve as-Found Lift Settings Were Not within Technical Specification Limits

LER-1994-015, :on 940601,electrical Cable Revealed to Be Not Environmentally Qualified for Use in Application Due to Installation of Nonenvironmentally Qualified Cable.Jco Initiated as Defined in GL 91-18
type: Subject
label: 05000255/LER-1994-015, :on 940601,electrical Cable Revealed to Be Not Environmentally Qualified for Use in Application Due to Installation of Nonenvironmentally Qualified Cable.Jco Initiated as Defined in GL 91-18
page: https://kanterella.com/05000255/LER-2D1994-2D015-2C_-3Aon_940601-2Celectrical_Cable_Revealed_to_Be_Not_Environmentally_Qualified_for_Use_in_Application_Due_to_Installation_of_Nonenvironmentally_Qualif…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000255/LER-1994-015, :on 940601,electrical Cable Revealed to Be Not Environmentally Qualified for Use in Application Due to Installation of Nonenvironmentally Qualified Cable.Jco Initiated as Defined in GL 91-18

LER-1989-001, :on 890110,emergency Diesel Generator (EDG) B & Intake Cooling Water Pump 3A Out of Svc During Same Time. Caused by Operability Test Being Performed.Edg Returned to Svc on 890110 & Pump Checked
type: Subject
label: 05000250/LER-1989-001, :on 890110,emergency Diesel Generator (EDG) B & Intake Cooling Water Pump 3A Out of Svc During Same Time. Caused by Operability Test Being Performed.Edg Returned to Svc on 890110 & Pump Checked
page: https://kanterella.com/05000250/LER-2D1989-2D001-2C_-3Aon_890110-2Cemergency_Diesel_Generator_-28EDG-29_B_-26_Intake_Cooling_Water_Pump_3A_Out_of_Svc_During_Same_Time._Caused_by_Operability_Test_Being…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1989-001, :on 890110,emergency Diesel Generator (EDG) B & Intake Cooling Water Pump 3A Out of Svc During Same Time. Caused by Operability Test Being Performed.Edg Returned to Svc on 890110 & Pump Checked

Std ASTM Sampling Procedures.Procedure Revised
type: Subject
label: 05000250/LER-1987-007-01, :on 870128,diesel Fuel Storage Tank Sample Did Not Meet Tech Spec Surveillance Requirements.Caused by Not Using Sampling Techniques in Accordance W/Std ASTM Sampling Procedures.Procedure Revised
page: https://kanterella.com/05000250/LER-2D1987-2D007-2D01-2C_-3Aon_870128-2Cdiesel_Fuel_Storage_Tank_Sample_Did_Not_Meet_Tech_Spec_Surveillance_Requirements.Caused_by_Not_Using_Sampling_Techniques_in_Acco…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1987-007-01, :on 870128,diesel Fuel Storage Tank Sample Did Not Meet Tech Spec Surveillance Requirements.Caused by Not Using Sampling Techniques in Accordance W/Std ASTM Sampling Procedures.Procedure Revised

LER-1988-001, :on 880113,unit Experienced Turbine Runback Due to Dropped Control Rod Assembly & Manual Subcritical Reactor Trip Occurred When Addl Control Rods Dropped Into Core. Caused by Personnel Error.Personnel Counseled
type: Subject
label: 05000250/LER-1988-001, :on 880113,unit Experienced Turbine Runback Due to Dropped Control Rod Assembly & Manual Subcritical Reactor Trip Occurred When Addl Control Rods Dropped Into Core. Caused by Personnel Error.Personnel Counseled
page: https://kanterella.com/05000250/LER-2D1988-2D001-2C_-3Aon_880113-2Cunit_Experienced_Turbine_Runback_Due_to_Dropped_Control_Rod_Assembly_-26_Manual_Subcritical_Reactor_Trip_Occurred_When_Addl_Control_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000250/LER-1988-001, :on 880113,unit Experienced Turbine Runback Due to Dropped Control Rod Assembly & Manual Subcritical Reactor Trip Occurred When Addl Control Rods Dropped Into Core. Caused by Personnel Error.Personnel Counseled

05000315/LER-1987-012, :on 870702,Type B & C Containment Leak Rate Tests Failed on Two Valves.Caused by Ripped Diaphragm on One Valve.Cause Unknown on Second Valve.Valves Repaired
type: Subject
page: https://kanterella.com/05000315/LER-2D1987-2D012-2C_-3Aon_870702-2CType_B_-26_C_Containment_Leak_Rate_Tests_Failed_on_Two_Valves.Caused_by_Ripped_Diaphragm_on_One_Valve.Cause_Unknown_on_Second_Valve.V…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000315/LER-1987-012, :on 870702,Type B & C Containment Leak Rate Tests Failed on Two Valves.Caused by Ripped Diaphragm on One Valve.Cause Unknown on Second Valve.Valves Repaired

05000483/LER-1987-011, :on 870605,ESF Switchgear Rooms Halon Sys Rendered Inoperable W/O Continuous Firewatch.Caused by Cognitive Util Personnel Errors.Work Authorizing Documents Rescheduled
type: Subject
page: https://kanterella.com/05000483/LER-2D1987-2D011-2C_-3Aon_870605-2CESF_Switchgear_Rooms_Halon_Sys_Rendered_Inoperable_W/O_Continuous_Firewatch.Caused_by_Cognitive_Util_Personnel_Errors.Work_Authorizin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000483/LER-1987-011, :on 870605,ESF Switchgear Rooms Halon Sys Rendered Inoperable W/O Continuous Firewatch.Caused by Cognitive Util Personnel Errors.Work Authorizing Documents Rescheduled

05000318/LER-1996-001-01, :on 960227,breakers 552-41,552-21 & 552-61 Tripped Open in Plant Switchyard.Caused by Failure of Auxiliary Relay Card in Breaker 552-41.Failed Relay Card Replaced
type: Subject
page: https://kanterella.com/05000318/LER-2D1996-2D001-2D01-2C_-3Aon_960227-2Cbreakers_552-2D41-2C552-2D21_-26_552-2D61_Tripped_Open_in_Plant_Switchyard.Caused_by_Failure_of_Auxiliary_Relay_Card_in_Breaker_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000318/LER-1996-001-01, :on 960227,breakers 552-41,552-21 & 552-61 Tripped Open in Plant Switchyard.Caused by Failure of Auxiliary Relay Card in Breaker 552-41.Failed Relay Card Replaced

05000317/LER-1995-007, :on 940719,Unit 1 Tripped from 100% Power as Result of RPS Actuation.Caused by Low SG Water Levels Due to Level Shrink.Actions Initiated to Facilitate Safe Unit Restart
type: Subject
page: https://kanterella.com/05000317/LER-2D1995-2D007-2C_-3Aon_940719-2CUnit_1_Tripped_from_100-_Power_as_Result_of_RPS_Actuation.Caused_by_Low_SG_Water_Levels_Due_to_Level_Shrink.Actions_Initiated_to_Faci…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 388A
wiki page sort key: 05000317/LER-1995-007, :on 940719,Unit 1 Tripped from 100% Power as Result of RPS Actuation.Caused by Low SG Water Levels Due to Level Shrink.Actions Initiated to Facilitate Safe Unit Restart

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