NRC Form 3M
type: Ontology
creation date: 2025-12-19T06:03:14-05:00
imports: http://semantic-mediawiki.org/swivt/1.0

NRC Form 3M
type: Subject
page: https://kanterella.com/NRC_Form_3M
wiki namespace: 0
wiki page content language: en
wiki page sort key: NRC Form 3M

LER-1991-004-02, :on 910218,radiation Monitoring Sys intermediate-range Vent Monitor 2R45B Spiked High,Causing Channel 2R41 to Deenergize.Caused by Damaged Cable Shield Connection.Detector Cable Replaced
type: Subject
label: 05000311/LER-1991-004-02, :on 910218,radiation Monitoring Sys intermediate-range Vent Monitor 2R45B Spiked High,Causing Channel 2R41 to Deenergize.Caused by Damaged Cable Shield Connection.Detector Cable Replaced
page: https://kanterella.com/05000311/LER-2D1991-2D004-2D02-2C_-3Aon_910218-2Cradiation_Monitoring_Sys_intermediate-2Drange_Vent_Monitor_2R45B_Spiked_High-2CCausing_Channel_2R41_to_Deenergize.Caused_by_Dama…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000311/LER-1991-004-02, :on 910218,radiation Monitoring Sys intermediate-range Vent Monitor 2R45B Spiked High,Causing Channel 2R41 to Deenergize.Caused by Damaged Cable Shield Connection.Detector Cable Replaced

LER-1989-003, :on 881010,discovered That Relay Room Penetrations,Identified in Sept 1988 Special Rept,Not Addressed Per Tech Specs.Caused by Personnel Not Including Seals in Special Rept.Individuals Counseled
type: Subject
label: 05000272/LER-1989-003, :on 881010,discovered That Relay Room Penetrations,Identified in Sept 1988 Special Rept,Not Addressed Per Tech Specs.Caused by Personnel Not Including Seals in Special Rept.Individuals Counseled
page: https://kanterella.com/05000272/LER-2D1989-2D003-2C_-3Aon_881010-2Cdiscovered_That_Relay_Room_Penetrations-2CIdentified_in_Sept_1988_Special_Rept-2CNot_Addressed_Per_Tech_Specs.Caused_by_Personnel_Not…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000272/LER-1989-003, :on 881010,discovered That Relay Room Penetrations,Identified in Sept 1988 Special Rept,Not Addressed Per Tech Specs.Caused by Personnel Not Including Seals in Special Rept.Individuals Counseled

23BF19 Valve.Maint Requirements Will Be Modified
type: Subject
label: 05000311/LER-1988-017-01, :on 880831,reactor Trip Occurred After Turbine Trip as Result of Steam Generator hi-hi Level.Caused by Design/Equipment Problem Associated w/23BF19 Valve.Maint Requirements Will Be Modified
page: https://kanterella.com/05000311/LER-2D1988-2D017-2D01-2C_-3Aon_880831-2Creactor_Trip_Occurred_After_Turbine_Trip_as_Result_of_Steam_Generator_hi-2Dhi_Level.Caused_by_Design/Equipment_Problem_Associate…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000311/LER-1988-017-01, :on 880831,reactor Trip Occurred After Turbine Trip as Result of Steam Generator hi-hi Level.Caused by Design/Equipment Problem Associated w/23BF19 Valve.Maint Requirements Will Be Modified

ML20151S881
type: Subject
page: https://kanterella.com/ML20151S881
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML20151S881

ML20196B004
type: Subject
page: https://kanterella.com/ML20196B004
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML20196B004

ML20207D756
type: Subject
page: https://kanterella.com/ML20207D756
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML20207D756

ML20212L141
type: Subject
page: https://kanterella.com/ML20212L141
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML20212L141

ML20216F224
type: Subject
page: https://kanterella.com/ML20216F224
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML20216F224

LER-1997-028, :on 970618,missed RHR Sys Increased Frequency Surveillance Resulted in Operation to Be Outside of TS Requirements Due to Personnel Error.Improved Procedures Governing Station Surveillances
type: Subject
label: 05000373/LER-1997-028, :on 970618,missed RHR Sys Increased Frequency Surveillance Resulted in Operation to Be Outside of TS Requirements Due to Personnel Error.Improved Procedures Governing Station Surveillances
page: https://kanterella.com/05000373/LER-2D1997-2D028-2C_-3Aon_970618-2Cmissed_RHR_Sys_Increased_Frequency_Surveillance_Resulted_in_Operation_to_Be_Outside_of_TS_Requirements_Due_to_Personnel_Error.Improve…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000373/LER-1997-028, :on 970618,missed RHR Sys Increased Frequency Surveillance Resulted in Operation to Be Outside of TS Requirements Due to Personnel Error.Improved Procedures Governing Station Surveillances

LER-1998-004-02, :on 980227,TS Fire Watch Was Missed Due to Personnel Error.Permanent Policy Was Established to Ensure That Fire Watch Supervisors Check That Each Insp Route Started at Top of Each Hour
type: Subject
label: 05000373/LER-1998-004-02, :on 980227,TS Fire Watch Was Missed Due to Personnel Error.Permanent Policy Was Established to Ensure That Fire Watch Supervisors Check That Each Insp Route Started at Top of Each Hour
page: https://kanterella.com/05000373/LER-2D1998-2D004-2D02-2C_-3Aon_980227-2CTS_Fire_Watch_Was_Missed_Due_to_Personnel_Error.Permanent_Policy_Was_Established_to_Ensure_That_Fire_Watch_Supervisors_Check_Tha…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000373/LER-1998-004-02, :on 980227,TS Fire Watch Was Missed Due to Personnel Error.Permanent Policy Was Established to Ensure That Fire Watch Supervisors Check That Each Insp Route Started at Top of Each Hour

05000373/LER-1997-032, :on 970904,failure to Comply W/Ts Action Statement Was Determined.Caused by non-conservative Maintenance Planning.Dg 1A Control Room Frequency Meter Was Replaced
type: Subject
page: https://kanterella.com/05000373/LER-2D1997-2D032-2C_-3Aon_970904-2Cfailure_to_Comply_W/Ts_Action_Statement_Was_Determined.Caused_by_non-2Dconservative_Maintenance_Planning.Dg_1A_Control_Room_Frequency…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000373/LER-1997-032, :on 970904,failure to Comply W/Ts Action Statement Was Determined.Caused by non-conservative Maintenance Planning.Dg 1A Control Room Frequency Meter Was Replaced

05000374/LER-1999-002-06, :on 990821,automatic Scram Occurred Due to Failure of Reactor Water Level Control.Caused by Inadequate Maint on 2A Tdrep Servo Valve 2FW163AA.Repaired Servo Valve
type: Subject
page: https://kanterella.com/05000374/LER-2D1999-2D002-2D06-2C_-3Aon_990821-2Cautomatic_Scram_Occurred_Due_to_Failure_of_Reactor_Water_Level_Control.Caused_by_Inadequate_Maint_on_2A_Tdrep_Servo_Valve_2FW163…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000374/LER-1999-002-06, :on 990821,automatic Scram Occurred Due to Failure of Reactor Water Level Control.Caused by Inadequate Maint on 2A Tdrep Servo Valve 2FW163AA.Repaired Servo Valve

All Electricians. Mfg Electrical Prints Clarified
type: Subject
label: 05000318/LER-1988-002, :on 880122,reactor Tripped Due to Reduced Feedwater Flow Due to Loss of Power to Instrument Bus 2Y10. Caused by Personnel Error.Event Reviewed W/All Electricians. Mfg Electrical Prints Clarified
page: https://kanterella.com/05000318/LER-2D1988-2D002-2C_-3Aon_880122-2Creactor_Tripped_Due_to_Reduced_Feedwater_Flow_Due_to_Loss_of_Power_to_Instrument_Bus_2Y10._Caused_by_Personnel_Error.Event_Reviewed_W…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000318/LER-1988-002, :on 880122,reactor Tripped Due to Reduced Feedwater Flow Due to Loss of Power to Instrument Bus 2Y10. Caused by Personnel Error.Event Reviewed W/All Electricians. Mfg Electrical Prints Clarified

05000373/LER-1997-025, :on 970613,erroneous Determination of RHR Sys Pump Operability Resulted in Operation Outside of TS Requirements Due to Personnel Error.Shift Manager Was Counseled
type: Subject
page: https://kanterella.com/05000373/LER-2D1997-2D025-2C_-3Aon_970613-2Cerroneous_Determination_of_RHR_Sys_Pump_Operability_Resulted_in_Operation_Outside_of_TS_Requirements_Due_to_Personnel_Error.Shift_Man…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000373/LER-1997-025, :on 970613,erroneous Determination of RHR Sys Pump Operability Resulted in Operation Outside of TS Requirements Due to Personnel Error.Shift Manager Was Counseled

05000309/LER-1997-003, :on 970117,leaking Fuel Pins Identified in Westinghouse Fuel.Caused by grid-pin Fretting at mid- Assembly Fuel Spacer Grids.Replaced All Installed Westinghouse Fuel Assemblies
type: Subject
page: https://kanterella.com/05000309/LER-2D1997-2D003-2C_-3Aon_970117-2Cleaking_Fuel_Pins_Identified_in_Westinghouse_Fuel.Caused_by_grid-2Dpin_Fretting_at_mid-2D_Assembly_Fuel_Spacer_Grids.Replaced_All_Ins…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000309/LER-1997-003, :on 970117,leaking Fuel Pins Identified in Westinghouse Fuel.Caused by grid-pin Fretting at mid- Assembly Fuel Spacer Grids.Replaced All Installed Westinghouse Fuel Assemblies

LER-1997-002-03, :on 970203,main Control Room & Auxiliary Equipment Room Ventilation Sys Found Outside Design Basis Due to Inadequate Initial Design.Will Perform Analysis to Determine Whether Sys Was Capable of Function
type: Subject
label: 05000373/LER-1997-002-03, :on 970203,main Control Room & Auxiliary Equipment Room Ventilation Sys Found Outside Design Basis Due to Inadequate Initial Design.Will Perform Analysis to Determine Whether Sys Was Capable of Function
page: https://kanterella.com/05000373/LER-2D1997-2D002-2D03-2C_-3Aon_970203-2Cmain_Control_Room_-26_Auxiliary_Equipment_Room_Ventilation_Sys_Found_Outside_Design_Basis_Due_to_Inadequate_Initial_Design.Will_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000373/LER-1997-002-03, :on 970203,main Control Room & Auxiliary Equipment Room Ventilation Sys Found Outside Design Basis Due to Inadequate Initial Design.Will Perform Analysis to Determine Whether Sys Was Capable of Function

05000352/LER-1984-035, :on 841216,prior to Initial Criticality, Spurious Isolation of Reactor Water Cleanup Sys Occurred. Caused by Steam Leak Detection Sys Temp Switch Trip. Isolation Reset
type: Subject
page: https://kanterella.com/05000352/LER-2D1984-2D035-2C_-3Aon_841216-2Cprior_to_Initial_Criticality-2C_Spurious_Isolation_of_Reactor_Water_Cleanup_Sys_Occurred._Caused_by_Steam_Leak_Detection_Sys_Temp_Swi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000352/LER-1984-035, :on 841216,prior to Initial Criticality, Spurious Isolation of Reactor Water Cleanup Sys Occurred. Caused by Steam Leak Detection Sys Temp Switch Trip. Isolation Reset

LER-1995-006, :on 951030,unit Operated Above Maximum Thermal Power Level.Caused by Inadequate Procedure That Did Not Ensure That re-normalization Was Considered After Transmitter Recalibration.Revised Procedures
type: Subject
label: 05000443/LER-1995-006, :on 951030,unit Operated Above Maximum Thermal Power Level.Caused by Inadequate Procedure That Did Not Ensure That re-normalization Was Considered After Transmitter Recalibration.Revised Procedures
page: https://kanterella.com/05000443/LER-2D1995-2D006-2C_-3Aon_951030-2Cunit_Operated_Above_Maximum_Thermal_Power_Level.Caused_by_Inadequate_Procedure_That_Did_Not_Ensure_That_re-2Dnormalization_Was_Consid…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000443/LER-1995-006, :on 951030,unit Operated Above Maximum Thermal Power Level.Caused by Inadequate Procedure That Did Not Ensure That re-normalization Was Considered After Transmitter Recalibration.Revised Procedures

LER-1995-010, :on 950804,discovered Deficiencies in Flow Testing of RHR Sys.Caused by Deficient Procedure Which Failed to Consider Effect of Recirculation Line Downstream of Flow Orifice.Procedure Changes Will Be Made
type: Subject
label: 05000282/LER-1995-010, :on 950804,discovered Deficiencies in Flow Testing of RHR Sys.Caused by Deficient Procedure Which Failed to Consider Effect of Recirculation Line Downstream of Flow Orifice.Procedure Changes Will Be Made
page: https://kanterella.com/05000282/LER-2D1995-2D010-2C_-3Aon_950804-2Cdiscovered_Deficiencies_in_Flow_Testing_of_RHR_Sys.Caused_by_Deficient_Procedure_Which_Failed_to_Consider_Effect_of_Recirculation_Lin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000282/LER-1995-010, :on 950804,discovered Deficiencies in Flow Testing of RHR Sys.Caused by Deficient Procedure Which Failed to Consider Effect of Recirculation Line Downstream of Flow Orifice.Procedure Changes Will Be Made

LER-1991-010, :on 910415,ESF Actuation,Primary Containment Isolation Sys Group 1 Isolation Occurred.Caused by Normally Closed Contacts of Relay Failing to Maintain Closure After Relay Coil Deenergized.Relay Card Replaced
type: Subject
label: 05000325/LER-1991-010, :on 910415,ESF Actuation,Primary Containment Isolation Sys Group 1 Isolation Occurred.Caused by Normally Closed Contacts of Relay Failing to Maintain Closure After Relay Coil Deenergized.Relay Card Replaced
page: https://kanterella.com/05000325/LER-2D1991-2D010-2C_-3Aon_910415-2CESF_Actuation-2CPrimary_Containment_Isolation_Sys_Group_1_Isolation_Occurred.Caused_by_Normally_Closed_Contacts_of_Relay_Failing_to_M…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000325/LER-1991-010, :on 910415,ESF Actuation,Primary Containment Isolation Sys Group 1 Isolation Occurred.Caused by Normally Closed Contacts of Relay Failing to Maintain Closure After Relay Coil Deenergized.Relay Card Replaced

LER-1991-019, :on 910723,maint Surveillance Test Procedures Found to Be Revised Incorrectly.Caused by Lack of Formal Process for Ensuring That Procedure Was Electronically Altered Via Word Processing.Procedure Revised
type: Subject
label: 05000325/LER-1991-019, :on 910723,maint Surveillance Test Procedures Found to Be Revised Incorrectly.Caused by Lack of Formal Process for Ensuring That Procedure Was Electronically Altered Via Word Processing.Procedure Revised
page: https://kanterella.com/05000325/LER-2D1991-2D019-2C_-3Aon_910723-2Cmaint_Surveillance_Test_Procedures_Found_to_Be_Revised_Incorrectly.Caused_by_Lack_of_Formal_Process_for_Ensuring_That_Procedure_Was_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000325/LER-1991-019, :on 910723,maint Surveillance Test Procedures Found to Be Revised Incorrectly.Caused by Lack of Formal Process for Ensuring That Procedure Was Electronically Altered Via Word Processing.Procedure Revised

Open Elbow Directed Into Floor Drain in Unit 1 AF Tunnel.Caused by pre-service Deficiency.Required Check Valves Installed in Unit 1 Drain Line from Unit 1 AF Tunnel
type: Subject
label: 05000456/LER-1995-002-07, :on 950222,insp Revealed That Line Ended W/Open Elbow Directed Into Floor Drain in Unit 1 AF Tunnel.Caused by pre-service Deficiency.Required Check Valves Installed in Unit 1 Drain Line from Unit 1 AF Tunnel
page: https://kanterella.com/05000456/LER-2D1995-2D002-2D07-2C_-3Aon_950222-2Cinsp_Revealed_That_Line_Ended_W/Open_Elbow_Directed_Into_Floor_Drain_in_Unit_1_AF_Tunnel.Caused_by_pre-2Dservice_Deficiency.Requ…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000456/LER-1995-002-07, :on 950222,insp Revealed That Line Ended W/Open Elbow Directed Into Floor Drain in Unit 1 AF Tunnel.Caused by pre-service Deficiency.Required Check Valves Installed in Unit 1 Drain Line from Unit 1 AF Tunnel

05000364/LER-1994-002-01, :on 941214,surveillance Not Performed on Swp Lube & Cooling Valves Due to Cognitive Personnel Error. Surveillance Schedules Reviewed to Ensure Corrected Schedules Placed
type: Subject
page: https://kanterella.com/05000364/LER-2D1994-2D002-2D01-2C_-3Aon_941214-2Csurveillance_Not_Performed_on_Swp_Lube_-26_Cooling_Valves_Due_to_Cognitive_Personnel_Error._Surveillance_Schedules_Reviewed_to_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000364/LER-1994-002-01, :on 941214,surveillance Not Performed on Swp Lube & Cooling Valves Due to Cognitive Personnel Error. Surveillance Schedules Reviewed to Ensure Corrected Schedules Placed

05000440/LER-1994-016, :on 940609,keepfill Pressure for ESW Loops B & C Was Reported as Out of Specification Low.Caused by Deficiency in SW System Design Change.Design Change Is Being Developed
type: Subject
page: https://kanterella.com/05000440/LER-2D1994-2D016-2C_-3Aon_940609-2Ckeepfill_Pressure_for_ESW_Loops_B_-26_C_Was_Reported_as_Out_of_Specification_Low.Caused_by_Deficiency_in_SW_System_Design_Change.Desi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000440/LER-1994-016, :on 940609,keepfill Pressure for ESW Loops B & C Was Reported as Out of Specification Low.Caused by Deficiency in SW System Design Change.Design Change Is Being Developed

LER-1993-009, :on 931202,EDG G02 Declared Inoperable Due to Relay Malfunction in One of Redundant Starting Circuits. Testing & Insp of STLO-2 Relay Ongoing to Improve Understanding of Root Cause of Failure
type: Subject
label: 05000266/LER-1993-009, :on 931202,EDG G02 Declared Inoperable Due to Relay Malfunction in One of Redundant Starting Circuits. Testing & Insp of STLO-2 Relay Ongoing to Improve Understanding of Root Cause of Failure
page: https://kanterella.com/05000266/LER-2D1993-2D009-2C_-3Aon_931202-2CEDG_G02_Declared_Inoperable_Due_to_Relay_Malfunction_in_One_of_Redundant_Starting_Circuits._Testing_-26_Insp_of_STLO-2D2_Relay_Ongoin…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000266/LER-1993-009, :on 931202,EDG G02 Declared Inoperable Due to Relay Malfunction in One of Redundant Starting Circuits. Testing & Insp of STLO-2 Relay Ongoing to Improve Understanding of Root Cause of Failure

Tech Spec Action Statement Following 900726 & 30 Events.Caused by Inadequate post-trip Review.Procedures & Training Revised
type: Subject
label: 05000445/LER-1990-022, :on 900807,realized That Pressurizer Heatup Limit Exceeded Due to Failure to Comply W/Tech Spec Action Statement Following 900726 & 30 Events.Caused by Inadequate post-trip Review.Procedures & Training Revised
page: https://kanterella.com/05000445/LER-2D1990-2D022-2C_-3Aon_900807-2Crealized_That_Pressurizer_Heatup_Limit_Exceeded_Due_to_Failure_to_Comply_W/Tech_Spec_Action_Statement_Following_900726_-26_30_Events.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000445/LER-1990-022, :on 900807,realized That Pressurizer Heatup Limit Exceeded Due to Failure to Comply W/Tech Spec Action Statement Following 900726 & 30 Events.Caused by Inadequate post-trip Review.Procedures & Training Revised

D6 Design Repts Will Be Performed
type: Subject
label: 05000306/LER-1993-003-02, :on 930719,both Trains of Ventilation Safeguards Electrical Equipment Secured for Hours Due to Inadequate Administrative Control.Review of DGs D5/D6 Design Repts Will Be Performed
page: https://kanterella.com/05000306/LER-2D1993-2D003-2D02-2C_-3Aon_930719-2Cboth_Trains_of_Ventilation_Safeguards_Electrical_Equipment_Secured_for_Hours_Due_to_Inadequate_Administrative_Control.Review_of_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000306/LER-1993-003-02, :on 930719,both Trains of Ventilation Safeguards Electrical Equipment Secured for Hours Due to Inadequate Administrative Control.Review of DGs D5/D6 Design Repts Will Be Performed

LER-1993-018, :on 930721,planned Shutdown Initiated Due to Unidentified Leakage of 3 Gpm.On 930722,planned Shutdown Became TS Required Shutdown When Insp Revealed Leakage to Be Rc Pressure Boundary Leakage.Leakage Repaired
type: Subject
label: 05000293/LER-1993-018, :on 930721,planned Shutdown Initiated Due to Unidentified Leakage of 3 Gpm.On 930722,planned Shutdown Became TS Required Shutdown When Insp Revealed Leakage to Be Rc Pressure Boundary Leakage.Leakage Repaired
page: https://kanterella.com/05000293/LER-2D1993-2D018-2C_-3Aon_930721-2Cplanned_Shutdown_Initiated_Due_to_Unidentified_Leakage_of_3_Gpm.On_930722-2Cplanned_Shutdown_Became_TS_Required_Shutdown_When_Insp_Re…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000293/LER-1993-018, :on 930721,planned Shutdown Initiated Due to Unidentified Leakage of 3 Gpm.On 930722,planned Shutdown Became TS Required Shutdown When Insp Revealed Leakage to Be Rc Pressure Boundary Leakage.Leakage Repaired

ML20027E181
type: Subject
page: https://kanterella.com/ML20027E181
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML20027E181

ML20031G747
type: Subject
page: https://kanterella.com/ML20031G747
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML20031G747

03L-0:on 801013,nine of 20 Control Room Normal Ventilation Dampers Did Not Close within 10-s Limit.Caused by Insufficient Bleedoff Capacity for Control Air Header Which Feeds & Bleeds 10 Dampers Per Header
type: Subject
label: 05000346/LER-1980-077-03, /03L-0:on 801013,nine of 20 Control Room Normal Ventilation Dampers Did Not Close within 10-s Limit.Caused by Insufficient Bleedoff Capacity for Control Air Header Which Feeds & Bleeds 10 Dampers Per Header
page: https://kanterella.com/05000346/LER-2D1980-2D077-2D03-2C_/03L-2D0-3Aon_801013-2Cnine_of_20_Control_Room_Normal_Ventilation_Dampers_Did_Not_Close_within_10-2Ds_Limit.Caused_by_Insufficient_Bleedoff_Cap…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000346/LER-1980-077-03, /03L-0:on 801013,nine of 20 Control Room Normal Ventilation Dampers Did Not Close within 10-s Limit.Caused by Insufficient Bleedoff Capacity for Control Air Header Which Feeds & Bleeds 10 Dampers Per Header

ML19308B301
type: Subject
page: https://kanterella.com/ML19308B301
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML19308B301

LER-1990-002-01, :on 900205,two Control Rods of Control Bank D Differed from Rod Group Demand Counter by Greater than 12 Steps.Caused by Inadequate Procedures.Rampdown Stopped & Individual Rod Position Indicators Adjusted
type: Subject
label: 05000281/LER-1990-002-01, :on 900205,two Control Rods of Control Bank D Differed from Rod Group Demand Counter by Greater than 12 Steps.Caused by Inadequate Procedures.Rampdown Stopped & Individual Rod Position Indicators Adjusted
page: https://kanterella.com/05000281/LER-2D1990-2D002-2D01-2C_-3Aon_900205-2Ctwo_Control_Rods_of_Control_Bank_D_Differed_from_Rod_Group_Demand_Counter_by_Greater_than_12_Steps.Caused_by_Inadequate_Procedur…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000281/LER-1990-002-01, :on 900205,two Control Rods of Control Bank D Differed from Rod Group Demand Counter by Greater than 12 Steps.Caused by Inadequate Procedures.Rampdown Stopped & Individual Rod Position Indicators Adjusted

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 3M
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

Relay Room Chiller Removed from Svc After Second Chiller Removed from Svc. Caused by Fouled Chiller Refrigerant filter-dryer Elements. Filter-dryer Elements Replaced
type: Subject
label: 05000281/LER-1988-011-02, :on 880423,control Room/Relay Room Chiller Removed from Svc After Second Chiller Removed from Svc. Caused by Fouled Chiller Refrigerant filter-dryer Elements. Filter-dryer Elements Replaced
page: https://kanterella.com/05000281/LER-2D1988-2D011-2D02-2C_-3Aon_880423-2Ccontrol_Room/Relay_Room_Chiller_Removed_from_Svc_After_Second_Chiller_Removed_from_Svc._Caused_by_Fouled_Chiller_Refrigerant_fil…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000281/LER-1988-011-02, :on 880423,control Room/Relay Room Chiller Removed from Svc After Second Chiller Removed from Svc. Caused by Fouled Chiller Refrigerant filter-dryer Elements. Filter-dryer Elements Replaced

LER-1987-010, :on 870313,improper Routing of App B Related Cables Discovered.Caused by Relocation of Cables Through Cable Vault & Tunnel.Fire Watch of Area at Least Once Per Shift Established & Design Changes Reviewed
type: Subject
label: 05000280/LER-1987-010, :on 870313,improper Routing of App B Related Cables Discovered.Caused by Relocation of Cables Through Cable Vault & Tunnel.Fire Watch of Area at Least Once Per Shift Established & Design Changes Reviewed
page: https://kanterella.com/05000280/LER-2D1987-2D010-2C_-3Aon_870313-2Cimproper_Routing_of_App_B_Related_Cables_Discovered.Caused_by_Relocation_of_Cables_Through_Cable_Vault_-26_Tunnel.Fire_Watch_of_Area_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000280/LER-1987-010, :on 870313,improper Routing of App B Related Cables Discovered.Caused by Relocation of Cables Through Cable Vault & Tunnel.Fire Watch of Area at Least Once Per Shift Established & Design Changes Reviewed

LER-1991-002-02, :on 910117,RHR Pump 11 Room Cooler Leakage Noted on Metal Weld of Inlet Control Valve.On 910124,leakage Noted on SI Pump Room Cooler & Auxiliary Feedwater Pump Cooler.Caused by Equipment Failure
type: Subject
label: 05000272/LER-1991-002-02, :on 910117,RHR Pump 11 Room Cooler Leakage Noted on Metal Weld of Inlet Control Valve.On 910124,leakage Noted on SI Pump Room Cooler & Auxiliary Feedwater Pump Cooler.Caused by Equipment Failure
page: https://kanterella.com/05000272/LER-2D1991-2D002-2D02-2C_-3Aon_910117-2CRHR_Pump_11_Room_Cooler_Leakage_Noted_on_Metal_Weld_of_Inlet_Control_Valve.On_910124-2Cleakage_Noted_on_SI_Pump_Room_Cooler_-26_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000272/LER-1991-002-02, :on 910117,RHR Pump 11 Room Cooler Leakage Noted on Metal Weld of Inlet Control Valve.On 910124,leakage Noted on SI Pump Room Cooler & Auxiliary Feedwater Pump Cooler.Caused by Equipment Failure

Equipment. Channel 2R11A Repaired
type: Subject
label: 05000311/LER-1990-033, :on 900809,isolation Signals Received from Containment purge/pressure-vacuum Relief Sys & on 900824, Second ESF Signal Occurred.Caused by Design/Equipment. Channel 2R11A Repaired
page: https://kanterella.com/05000311/LER-2D1990-2D033-2C_-3Aon_900809-2Cisolation_Signals_Received_from_Containment_purge/pressure-2Dvacuum_Relief_Sys_-26_on_900824-2C_Second_ESF_Signal_Occurred.Caused_by_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000311/LER-1990-033, :on 900809,isolation Signals Received from Containment purge/pressure-vacuum Relief Sys & on 900824, Second ESF Signal Occurred.Caused by Design/Equipment. Channel 2R11A Repaired

05000272/LER-1989-026, :on 890618,controlled Shutdown Per Tech Spec 3.3.2.1 Occurred Due to Inoperable Sec.Caused by Equipment Failure.Failed Pc Boards Replaced & Sequence Timing Switch Reset
type: Subject
page: https://kanterella.com/05000272/LER-2D1989-2D026-2C_-3Aon_890618-2Ccontrolled_Shutdown_Per_Tech_Spec_3.3.2.1_Occurred_Due_to_Inoperable_Sec.Caused_by_Equipment_Failure.Failed_Pc_Boards_Replaced_-26_Se…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000272/LER-1989-026, :on 890618,controlled Shutdown Per Tech Spec 3.3.2.1 Occurred Due to Inoperable Sec.Caused by Equipment Failure.Failed Pc Boards Replaced & Sequence Timing Switch Reset

LER-1988-017-02, :on 880919,Steam Flow Channels I & II for 12 & 14 Steam Generators Declared Inoperable.Channels Were Reading -5- Low.Investigation of Root Cause Continuing.Steam Flow Channels Recalibr
type: Subject
label: 05000272/LER-1988-017-02, :on 880919,Steam Flow Channels I & II for 12 & 14 Steam Generators Declared Inoperable.Channels Were Reading -5% Low.Investigation of Root Cause Continuing.Steam Flow Channels Recalibr
page: https://kanterella.com/05000272/LER-2D1988-2D017-2D02-2C_-3Aon_880919-2CSteam_Flow_Channels_I_-26_II_for_12_-26_14_Steam_Generators_Declared_Inoperable.Channels_Were_Reading_-2D5-_Low.Investigation_of…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000272/LER-1988-017-02, :on 880919,Steam Flow Channels I & II for 12 & 14 Steam Generators Declared Inoperable.Channels Were Reading -5% Low.Investigation of Root Cause Continuing.Steam Flow Channels Recalibr

LER-1988-018-01, :on 880914,discovered That Plant Vent Tritium Grab Samples Not Taken Between 880913-15.Refueling Canal Flooded on 880913 in Support of Refueling Efforts.Caused by Inadequate Administrative Controls
type: Subject
label: 05000311/LER-1988-018-01, :on 880914,discovered That Plant Vent Tritium Grab Samples Not Taken Between 880913-15.Refueling Canal Flooded on 880913 in Support of Refueling Efforts.Caused by Inadequate Administrative Controls
page: https://kanterella.com/05000311/LER-2D1988-2D018-2D01-2C_-3Aon_880914-2Cdiscovered_That_Plant_Vent_Tritium_Grab_Samples_Not_Taken_Between_880913-2D15.Refueling_Canal_Flooded_on_880913_in_Support_of_Re…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000311/LER-1988-018-01, :on 880914,discovered That Plant Vent Tritium Grab Samples Not Taken Between 880913-15.Refueling Canal Flooded on 880913 in Support of Refueling Efforts.Caused by Inadequate Administrative Controls

LER-1988-011-02, :on 880517,monthly Tech Spec Surveillance 4.0.5 for Apr Not Performed for Valve 12SW39.Caused by Personnel Error.Programmatic Review Conducted to Determine Progammatic Improvements Needed
type: Subject
label: 05000272/LER-1988-011-02, :on 880517,monthly Tech Spec Surveillance 4.0.5 for Apr Not Performed for Valve 12SW39.Caused by Personnel Error.Programmatic Review Conducted to Determine Progammatic Improvements Needed
page: https://kanterella.com/05000272/LER-2D1988-2D011-2D02-2C_-3Aon_880517-2Cmonthly_Tech_Spec_Surveillance_4.0.5_for_Apr_Not_Performed_for_Valve_12SW39.Caused_by_Personnel_Error.Programmatic_Review_Conduc…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000272/LER-1988-011-02, :on 880517,monthly Tech Spec Surveillance 4.0.5 for Apr Not Performed for Valve 12SW39.Caused by Personnel Error.Programmatic Review Conducted to Determine Progammatic Improvements Needed

LER-1988-010-02, :on 880509,identified That for 37 Electrical Circuits Penetrating Containment,Backup Overcurrent Protection Device Would Not Operate.Caused by Inadequate Design Review.Detailed Calculation Prepared
type: Subject
label: 05000311/LER-1988-010-02, :on 880509,identified That for 37 Electrical Circuits Penetrating Containment,Backup Overcurrent Protection Device Would Not Operate.Caused by Inadequate Design Review.Detailed Calculation Prepared
page: https://kanterella.com/05000311/LER-2D1988-2D010-2D02-2C_-3Aon_880509-2Cidentified_That_for_37_Electrical_Circuits_Penetrating_Containment-2CBackup_Overcurrent_Protection_Device_Would_Not_Operate.Caus…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000311/LER-1988-010-02, :on 880509,identified That for 37 Electrical Circuits Penetrating Containment,Backup Overcurrent Protection Device Would Not Operate.Caused by Inadequate Design Review.Detailed Calculation Prepared

05000400/LER-1988-028, :on 881014,plant Tripped Due to Loss of Feedwater Caused by Low Condenser Hot Well Level.Caused by Low Level in Condenser Hot Well.Failed Relay Coil Replaced
type: Subject
page: https://kanterella.com/05000400/LER-2D1988-2D028-2C_-3Aon_881014-2Cplant_Tripped_Due_to_Loss_of_Feedwater_Caused_by_Low_Condenser_Hot_Well_Level.Caused_by_Low_Level_in_Condenser_Hot_Well.Failed_Relay_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000400/LER-1988-028, :on 881014,plant Tripped Due to Loss of Feedwater Caused by Low Condenser Hot Well Level.Caused by Low Level in Condenser Hot Well.Failed Relay Coil Replaced

LER-1989-015, :on 890512,three-quarter-inch High Point Vent Line Failed During Performance of HPCS Sys Operability Procedure.Caused by Reverse Bending Fatigue Caused by Vibration.Design Change Implemented
type: Subject
label: 05000397/LER-1989-015, :on 890512,three-quarter-inch High Point Vent Line Failed During Performance of HPCS Sys Operability Procedure.Caused by Reverse Bending Fatigue Caused by Vibration.Design Change Implemented
page: https://kanterella.com/05000397/LER-2D1989-2D015-2C_-3Aon_890512-2Cthree-2Dquarter-2Dinch_High_Point_Vent_Line_Failed_During_Performance_of_HPCS_Sys_Operability_Procedure.Caused_by_Reverse_Bending_Fat…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000397/LER-1989-015, :on 890512,three-quarter-inch High Point Vent Line Failed During Performance of HPCS Sys Operability Procedure.Caused by Reverse Bending Fatigue Caused by Vibration.Design Change Implemented

LER-1994-001-02, :on 940217,pressurizer Auxiliary Spray Declared Out of Svc.Caused by Mispositioned Valve Due to Personnel Error.Valve Correctly Realigned,Plant Records Reviewed & Nonlicensed Operators Counseled
type: Subject
label: 05000389/LER-1994-001-02, :on 940217,pressurizer Auxiliary Spray Declared Out of Svc.Caused by Mispositioned Valve Due to Personnel Error.Valve Correctly Realigned,Plant Records Reviewed & Nonlicensed Operators Counseled
page: https://kanterella.com/05000389/LER-2D1994-2D001-2D02-2C_-3Aon_940217-2Cpressurizer_Auxiliary_Spray_Declared_Out_of_Svc.Caused_by_Mispositioned_Valve_Due_to_Personnel_Error.Valve_Correctly_Realigned-2…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000389/LER-1994-001-02, :on 940217,pressurizer Auxiliary Spray Declared Out of Svc.Caused by Mispositioned Valve Due to Personnel Error.Valve Correctly Realigned,Plant Records Reviewed & Nonlicensed Operators Counseled

LER-1991-002, :on 910219,unplanned Actuation of AFW Sys Occurred.Caused by Personnel Error.Engineering Revises Vendor Technical Manual to Clarify Fuse Designations & Provide Separation on Circuit Schematic
type: Subject
label: 05000335/LER-1991-002, :on 910219,unplanned Actuation of AFW Sys Occurred.Caused by Personnel Error.Engineering Revises Vendor Technical Manual to Clarify Fuse Designations & Provide Separation on Circuit Schematic
page: https://kanterella.com/05000335/LER-2D1991-2D002-2C_-3Aon_910219-2Cunplanned_Actuation_of_AFW_Sys_Occurred.Caused_by_Personnel_Error.Engineering_Revises_Vendor_Technical_Manual_to_Clarify_Fuse_Designa…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000335/LER-1991-002, :on 910219,unplanned Actuation of AFW Sys Occurred.Caused by Personnel Error.Engineering Revises Vendor Technical Manual to Clarify Fuse Designations & Provide Separation on Circuit Schematic

LER-1990-001-01, :on 900114,steam Generator Feed Pump 2B Low Suction Pressure Alarm Received,Condensate Pump 2A Would Not Start & Pump B Tripped on Low Suction Pressure.Caused by Personnel Error.Pump Governor Oil Drained
type: Subject
label: 05000389/LER-1990-001-01, :on 900114,steam Generator Feed Pump 2B Low Suction Pressure Alarm Received,Condensate Pump 2A Would Not Start & Pump B Tripped on Low Suction Pressure.Caused by Personnel Error.Pump Governor Oil Drained
page: https://kanterella.com/05000389/LER-2D1990-2D001-2D01-2C_-3Aon_900114-2Csteam_Generator_Feed_Pump_2B_Low_Suction_Pressure_Alarm_Received-2CCondensate_Pump_2A_Would_Not_Start_-26_Pump_B_Tripped_on_Low_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: 05000389/LER-1990-001-01, :on 900114,steam Generator Feed Pump 2B Low Suction Pressure Alarm Received,Condensate Pump 2A Would Not Start & Pump B Tripped on Low Suction Pressure.Caused by Personnel Error.Pump Governor Oil Drained

ML061710116
type: Subject
page: https://kanterella.com/ML061710116
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML061710116

ML20070D260
type: Subject
page: https://kanterella.com/ML20070D260
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 3M
wiki page sort key: ML20070D260

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