NRC Form 308
type: Ontology
creation date: 2025-12-07T15:48:03-05:00
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NRC Form 308
type: Subject
page: https://kanterella.com/NRC_Form_308
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wiki page content language: en
wiki page sort key: NRC Form 308

ML20198F281
type: Subject
page: https://kanterella.com/ML20198F281
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20198F281

ML20246E620
type: Subject
page: https://kanterella.com/ML20246E620
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20246E620

ML20236S564
type: Subject
page: https://kanterella.com/ML20236S564
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20236S564

ML20210F084
type: Subject
page: https://kanterella.com/ML20210F084
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20210F084

LER-1993-011, :on 930624,experienced Reactor Trip Due to Loss of Load.Caused by Lack of Proper Job Planning,Lack of Formal Decision Making Process & Incomplete Communications.Training Will Be Provided to Operations Personnel
type: Subject
label: 05000285/LER-1993-011, :on 930624,experienced Reactor Trip Due to Loss of Load.Caused by Lack of Proper Job Planning,Lack of Formal Decision Making Process & Incomplete Communications.Training Will Be Provided to Operations Personnel
page: https://kanterella.com/05000285/LER-2D1993-2D011-2C_-3Aon_930624-2Cexperienced_Reactor_Trip_Due_to_Loss_of_Load.Caused_by_Lack_of_Proper_Job_Planning-2CLack_of_Formal_Decision_Making_Process_-26_Incom…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000285/LER-1993-011, :on 930624,experienced Reactor Trip Due to Loss of Load.Caused by Lack of Proper Job Planning,Lack of Formal Decision Making Process & Incomplete Communications.Training Will Be Provided to Operations Personnel

ML20148D027
type: Subject
page: https://kanterella.com/ML20148D027
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20148D027

Identical Valve
type: Subject
label: 05000317/LER-1988-014, :on 881029,while Performing Surveillance Test Procedure to reverse-flow Test Check valves,MS-103 Leaked By.Caused by Excessive Cycling Due to leak-by of MS-102. Check Valve MS-103 Replaced W/Identical Valve
page: https://kanterella.com/05000317/LER-2D1988-2D014-2C_-3Aon_881029-2Cwhile_Performing_Surveillance_Test_Procedure_to_reverse-2Dflow_Test_Check_valves-2CMS-2D103_Leaked_By.Caused_by_Excessive_Cycling_Due…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000317/LER-1988-014, :on 881029,while Performing Surveillance Test Procedure to reverse-flow Test Check valves,MS-103 Leaked By.Caused by Excessive Cycling Due to leak-by of MS-102. Check Valve MS-103 Replaced W/Identical Valve

Ansi Std Requirements.Caused by Lack of Understanding of DOP Testing. Filter Testing Training Will Be Provided
type: Subject
label: 05000259/LER-1998-001-03, :on 980414,standby Gas Treatment Sys HEPA Filter Testing Was Not in Compliance W/Ansi Std Requirements.Caused by Lack of Understanding of DOP Testing. Filter Testing Training Will Be Provided
page: https://kanterella.com/05000259/LER-2D1998-2D001-2D03-2C_-3Aon_980414-2Cstandby_Gas_Treatment_Sys_HEPA_Filter_Testing_Was_Not_in_Compliance_W/Ansi_Std_Requirements.Caused_by_Lack_of_Understanding_of_D…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000259/LER-1998-001-03, :on 980414,standby Gas Treatment Sys HEPA Filter Testing Was Not in Compliance W/Ansi Std Requirements.Caused by Lack of Understanding of DOP Testing. Filter Testing Training Will Be Provided

Tech Spec Action Statement 3.7.7.b.Caused by Equipment Problems. Channel I Transmitter Recalibr
type: Subject
label: 05000311/LER-1989-006-02, :on 890329,reactor Trip Signal on Steam Generator 21 Occurred After Shutdown for Compliance W/Tech Spec Action Statement 3.7.7.b.Caused by Equipment Problems. Channel I Transmitter Recalibr
page: https://kanterella.com/05000311/LER-2D1989-2D006-2D02-2C_-3Aon_890329-2Creactor_Trip_Signal_on_Steam_Generator_21_Occurred_After_Shutdown_for_Compliance_W/Tech_Spec_Action_Statement_3.7.7.b.Caused_by_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000311/LER-1989-006-02, :on 890329,reactor Trip Signal on Steam Generator 21 Occurred After Shutdown for Compliance W/Tech Spec Action Statement 3.7.7.b.Caused by Equipment Problems. Channel I Transmitter Recalibr

05000416/LER-1989-001, :on 890327,power Interruption to ESF Bus Caused Secondary Containment Isolation.Div 1 Bus Connected to ESF Transformer 12 to Provide Div 1 & 2 Buses W/Independent Power Sources
type: Subject
page: https://kanterella.com/05000416/LER-2D1989-2D001-2C_-3Aon_890327-2Cpower_Interruption_to_ESF_Bus_Caused_Secondary_Containment_Isolation.Div_1_Bus_Connected_to_ESF_Transformer_12_to_Provide_Div_1_-26_2…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000416/LER-1989-001, :on 890327,power Interruption to ESF Bus Caused Secondary Containment Isolation.Div 1 Bus Connected to ESF Transformer 12 to Provide Div 1 & 2 Buses W/Independent Power Sources

LER-1987-004, :on 870404,while in Mode 5 Cold Shutdown, Release of Primary Coolant to Containment Environ Occurred. Caused by Inadequate Spec of Type of Connection to Be Used Between Pressurizer & Pressurizer Relief Tank
type: Subject
label: 05000483/LER-1987-004, :on 870404,while in Mode 5 Cold Shutdown, Release of Primary Coolant to Containment Environ Occurred. Caused by Inadequate Spec of Type of Connection to Be Used Between Pressurizer & Pressurizer Relief Tank
page: https://kanterella.com/05000483/LER-2D1987-2D004-2C_-3Aon_870404-2Cwhile_in_Mode_5_Cold_Shutdown-2C_Release_of_Primary_Coolant_to_Containment_Environ_Occurred._Caused_by_Inadequate_Spec_of_Type_of_Con…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000483/LER-1987-004, :on 870404,while in Mode 5 Cold Shutdown, Release of Primary Coolant to Containment Environ Occurred. Caused by Inadequate Spec of Type of Connection to Be Used Between Pressurizer & Pressurizer Relief Tank

LER-1986-004, :on 860801,electrician Opened Switch for Circuit 2 on Dc Panel 21 to Isolate Ground to Single Circuit,Causing Auxiliary Feedwater Pump to Start.Caused by Personnel Error.Personnel Counseled
type: Subject
label: 05000306/LER-1986-004, :on 860801,electrician Opened Switch for Circuit 2 on Dc Panel 21 to Isolate Ground to Single Circuit,Causing Auxiliary Feedwater Pump to Start.Caused by Personnel Error.Personnel Counseled
page: https://kanterella.com/05000306/LER-2D1986-2D004-2C_-3Aon_860801-2Celectrician_Opened_Switch_for_Circuit_2_on_Dc_Panel_21_to_Isolate_Ground_to_Single_Circuit-2CCausing_Auxiliary_Feedwater_Pump_to_Star…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000306/LER-1986-004, :on 860801,electrician Opened Switch for Circuit 2 on Dc Panel 21 to Isolate Ground to Single Circuit,Causing Auxiliary Feedwater Pump to Start.Caused by Personnel Error.Personnel Counseled

LER-1986-028-01, :on 860610,switchgear Room Halon Sys Declared Inoperable.Caused by Failure to Perform Adequate Retest. Completion of long-term Corrective Mod Deferred Until 1987 Refueling Outage
type: Subject
label: 05000213/LER-1986-028-01, :on 860610,switchgear Room Halon Sys Declared Inoperable.Caused by Failure to Perform Adequate Retest. Completion of long-term Corrective Mod Deferred Until 1987 Refueling Outage
page: https://kanterella.com/05000213/LER-2D1986-2D028-2D01-2C_-3Aon_860610-2Cswitchgear_Room_Halon_Sys_Declared_Inoperable.Caused_by_Failure_to_Perform_Adequate_Retest._Completion_of_long-2Dterm_Corrective…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000213/LER-1986-028-01, :on 860610,switchgear Room Halon Sys Declared Inoperable.Caused by Failure to Perform Adequate Retest. Completion of long-term Corrective Mod Deferred Until 1987 Refueling Outage

LER-1986-024, :on 860525,security Micro Access Computer Malfunctioned,Locking All Security Access Doors.Caused by Complete Loss of Access Memory.Backup Battery Replaced & Disk Drive Unit Cleaned
type: Subject
label: 05000327/LER-1986-024, :on 860525,security Micro Access Computer Malfunctioned,Locking All Security Access Doors.Caused by Complete Loss of Access Memory.Backup Battery Replaced & Disk Drive Unit Cleaned
page: https://kanterella.com/05000327/LER-2D1986-2D024-2C_-3Aon_860525-2Csecurity_Micro_Access_Computer_Malfunctioned-2CLocking_All_Security_Access_Doors.Caused_by_Complete_Loss_of_Access_Memory.Backup_Batt…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000327/LER-1986-024, :on 860525,security Micro Access Computer Malfunctioned,Locking All Security Access Doors.Caused by Complete Loss of Access Memory.Backup Battery Replaced & Disk Drive Unit Cleaned

LER-1986-035, :on 860928,containment Purge & Control Room Ventilation Isolation Occurred After Monitor GT-RE-32 Taken Out of Bypass.Caused by Random Fluctuations of Radioactivity Level.Plant Procedures Revised
type: Subject
label: 05000483/LER-1986-035, :on 860928,containment Purge & Control Room Ventilation Isolation Occurred After Monitor GT-RE-32 Taken Out of Bypass.Caused by Random Fluctuations of Radioactivity Level.Plant Procedures Revised
page: https://kanterella.com/05000483/LER-2D1986-2D035-2C_-3Aon_860928-2Ccontainment_Purge_-26_Control_Room_Ventilation_Isolation_Occurred_After_Monitor_GT-2DRE-2D32_Taken_Out_of_Bypass.Caused_by_Random_Flu…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000483/LER-1986-035, :on 860928,containment Purge & Control Room Ventilation Isolation Occurred After Monitor GT-RE-32 Taken Out of Bypass.Caused by Random Fluctuations of Radioactivity Level.Plant Procedures Revised

LER-1987-003, :on 870122,radiation Monitor Alarmed Due to Contaminated Instrument & Controls (I&C) Technician.Caused by Health Physics Technician Improperly Downgrading Work Permit Requirements.I&C Technician Retrained
type: Subject
label: 05000382/LER-1987-003, :on 870122,radiation Monitor Alarmed Due to Contaminated Instrument & Controls (I&C) Technician.Caused by Health Physics Technician Improperly Downgrading Work Permit Requirements.I&C Technician Retrained
page: https://kanterella.com/05000382/LER-2D1987-2D003-2C_-3Aon_870122-2Cradiation_Monitor_Alarmed_Due_to_Contaminated_Instrument_-26_Controls_-28I-26C-29_Technician.Caused_by_Health_Physics_Technician_Impr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000382/LER-1987-003, :on 870122,radiation Monitor Alarmed Due to Contaminated Instrument & Controls (I&C) Technician.Caused by Health Physics Technician Improperly Downgrading Work Permit Requirements.I&C Technician Retrained

synchronization to Grid at 15- Power,Primary Containment Isolation Sys Group I Isolation Occurred.Caused by Main Steam Line High Flow Signal.Main Steam Line Piping Walked Down.No Leaks Found
type: Subject
label: 05000374/LER-1986-009-05, :on 860511,w/synchronization to Grid at 15% Power,Primary Containment Isolation Sys Group I Isolation Occurred.Caused by Main Steam Line High Flow Signal.Main Steam Line Piping Walked Down.No Leaks Found
page: https://kanterella.com/05000374/LER-2D1986-2D009-2D05-2C_-3Aon_860511-2Cw/synchronization_to_Grid_at_15-_Power-2CPrimary_Containment_Isolation_Sys_Group_I_Isolation_Occurred.Caused_by_Main_Steam_Line_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000374/LER-1986-009-05, :on 860511,w/synchronization to Grid at 15% Power,Primary Containment Isolation Sys Group I Isolation Occurred.Caused by Main Steam Line High Flow Signal.Main Steam Line Piping Walked Down.No Leaks Found

Software Problems
type: Subject
label: 05000263/LER-1986-010, :on 860508,reactor Bldg Ventilation Isolation & Standby Gas Treatment Sys Initiation Occurred.Caused by Reactor Bldg Vent wide-range Gas Monitor Trip Due to Hardware/Software Problems
page: https://kanterella.com/05000263/LER-2D1986-2D010-2C_-3Aon_860508-2Creactor_Bldg_Ventilation_Isolation_-26_Standby_Gas_Treatment_Sys_Initiation_Occurred.Caused_by_Reactor_Bldg_Vent_wide-2Drange_Gas_Mon…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000263/LER-1986-010, :on 860508,reactor Bldg Ventilation Isolation & Standby Gas Treatment Sys Initiation Occurred.Caused by Reactor Bldg Vent wide-range Gas Monitor Trip Due to Hardware/Software Problems

LER-1986-006, :on 860409,discovered That One of four-inch Sample Lines to Header Completely Plugged.Caused by Pebbles Washed Off Reactor Bldg Into Roof Drains.Roof Drain Screens Will Be Installed
type: Subject
label: 05000220/LER-1986-006, :on 860409,discovered That One of four-inch Sample Lines to Header Completely Plugged.Caused by Pebbles Washed Off Reactor Bldg Into Roof Drains.Roof Drain Screens Will Be Installed
page: https://kanterella.com/05000220/LER-2D1986-2D006-2C_-3Aon_860409-2Cdiscovered_That_One_of_four-2Dinch_Sample_Lines_to_Header_Completely_Plugged.Caused_by_Pebbles_Washed_Off_Reactor_Bldg_Into_Roof_Drai…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000220/LER-1986-006, :on 860409,discovered That One of four-inch Sample Lines to Header Completely Plugged.Caused by Pebbles Washed Off Reactor Bldg Into Roof Drains.Roof Drain Screens Will Be Installed

LER-1986-018-01, :on 860810,RWCU Sys Isolated on High Differential Flow Signal.Caused by RWCU Resin Trap Not Being Filled & Vented Prior to Placing Sys in Svc or Resin Trap Isolation Valves Being Open.Procedure Modified
type: Subject
label: 05000366/LER-1986-018-01, :on 860810,RWCU Sys Isolated on High Differential Flow Signal.Caused by RWCU Resin Trap Not Being Filled & Vented Prior to Placing Sys in Svc or Resin Trap Isolation Valves Being Open.Procedure Modified
page: https://kanterella.com/05000366/LER-2D1986-2D018-2D01-2C_-3Aon_860810-2CRWCU_Sys_Isolated_on_High_Differential_Flow_Signal.Caused_by_RWCU_Resin_Trap_Not_Being_Filled_-26_Vented_Prior_to_Placing_Sys_in…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000366/LER-1986-018-01, :on 860810,RWCU Sys Isolated on High Differential Flow Signal.Caused by RWCU Resin Trap Not Being Filled & Vented Prior to Placing Sys in Svc or Resin Trap Isolation Valves Being Open.Procedure Modified

05000263/LER-1986-020, :on 860619,reactor Protection Sys (RPS) & Group II Tripped from Loss of Power.Caused by RPS-B Power Supply Being Fed from Alternate Power Source as Same Load Ctr Source as RPS-A
type: Subject
page: https://kanterella.com/05000263/LER-2D1986-2D020-2C_-3Aon_860619-2Creactor_Protection_Sys_-28RPS-29_-26_Group_II_Tripped_from_Loss_of_Power.Caused_by_RPS-2DB_Power_Supply_Being_Fed_from_Alternate_Powe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000263/LER-1986-020, :on 860619,reactor Protection Sys (RPS) & Group II Tripped from Loss of Power.Caused by RPS-B Power Supply Being Fed from Alternate Power Source as Same Load Ctr Source as RPS-A

Procedure to Transfer Power.Motor Replaced & Sys Returned to Normal
type: Subject
label: 05000324/LER-1987-004-02, :on 870311,reactor Scram on Low Level Due to Loss of Uninteruptible Power Supply & Subsequent Loss of Feedwater.Caused by Noncompliance W/Procedure to Transfer Power.Motor Replaced & Sys Returned to Normal
page: https://kanterella.com/05000324/LER-2D1987-2D004-2D02-2C_-3Aon_870311-2Creactor_Scram_on_Low_Level_Due_to_Loss_of_Uninteruptible_Power_Supply_-26_Subsequent_Loss_of_Feedwater.Caused_by_Noncompliance_W…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000324/LER-1987-004-02, :on 870311,reactor Scram on Low Level Due to Loss of Uninteruptible Power Supply & Subsequent Loss of Feedwater.Caused by Noncompliance W/Procedure to Transfer Power.Motor Replaced & Sys Returned to Normal

LER-1986-005-01, :on 860523,turbine Trip Occurred During Monthly Surveillance Test 3PT-M12.Caused by Failed Relay in Turbine Independent Electrical Overspeed Protection Sys (Ieops). Relay Replaced & Similar Ieops Relays Tested
type: Subject
label: 05000286/LER-1986-005-01, :on 860523,turbine Trip Occurred During Monthly Surveillance Test 3PT-M12.Caused by Failed Relay in Turbine Independent Electrical Overspeed Protection Sys (Ieops). Relay Replaced & Similar Ieops Relays Tested
page: https://kanterella.com/05000286/LER-2D1986-2D005-2D01-2C_-3Aon_860523-2Cturbine_Trip_Occurred_During_Monthly_Surveillance_Test_3PT-2DM12.Caused_by_Failed_Relay_in_Turbine_Independent_Electrical_Oversp…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000286/LER-1986-005-01, :on 860523,turbine Trip Occurred During Monthly Surveillance Test 3PT-M12.Caused by Failed Relay in Turbine Independent Electrical Overspeed Protection Sys (Ieops). Relay Replaced & Similar Ieops Relays Tested

LER-1986-010-01, :on 860406,fuse Inadvertently Dislodged, Starting Diesel Generators 1A-A & 2A-A.Caused When Assistant Unit Operator Attempted to Verify Fuse Size.Procedure Will Be Revised to Add Caution Re Fuse Removal
type: Subject
label: 05000327/LER-1986-010-01, :on 860406,fuse Inadvertently Dislodged, Starting Diesel Generators 1A-A & 2A-A.Caused When Assistant Unit Operator Attempted to Verify Fuse Size.Procedure Will Be Revised to Add Caution Re Fuse Removal
page: https://kanterella.com/05000327/LER-2D1986-2D010-2D01-2C_-3Aon_860406-2Cfuse_Inadvertently_Dislodged-2C_Starting_Diesel_Generators_1A-2DA_-26_2A-2DA.Caused_When_Assistant_Unit_Operator_Attempted_to_Ve…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000327/LER-1986-010-01, :on 860406,fuse Inadvertently Dislodged, Starting Diesel Generators 1A-A & 2A-A.Caused When Assistant Unit Operator Attempted to Verify Fuse Size.Procedure Will Be Revised to Add Caution Re Fuse Removal

LER-1986-014-01, :on 860628,surveillance Testing Not Performed to Meet Requirements of Tech Spec 4.5.2.d.1 to Verify Interlock Action of RHR from Rcs.Caused by Personnel Error. Procedures Written to Ensure Compliance
type: Subject
label: 05000315/LER-1986-014-01, :on 860628,surveillance Testing Not Performed to Meet Requirements of Tech Spec 4.5.2.d.1 to Verify Interlock Action of RHR from Rcs.Caused by Personnel Error. Procedures Written to Ensure Compliance
page: https://kanterella.com/05000315/LER-2D1986-2D014-2D01-2C_-3Aon_860628-2Csurveillance_Testing_Not_Performed_to_Meet_Requirements_of_Tech_Spec_4.5.2.d.1_to_Verify_Interlock_Action_of_RHR_from_Rcs.Caused…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000315/LER-1986-014-01, :on 860628,surveillance Testing Not Performed to Meet Requirements of Tech Spec 4.5.2.d.1 to Verify Interlock Action of RHR from Rcs.Caused by Personnel Error. Procedures Written to Ensure Compliance

LER-1986-025, :on 860701,review of Tech Spec 3.3.3.8 Revealed Four Differences Between Installed Fire Detection Zones & Operability Requirements.Caused by Personnel Error.Fire Watch Established
type: Subject
label: 05000346/LER-1986-025, :on 860701,review of Tech Spec 3.3.3.8 Revealed Four Differences Between Installed Fire Detection Zones & Operability Requirements.Caused by Personnel Error.Fire Watch Established
page: https://kanterella.com/05000346/LER-2D1986-2D025-2C_-3Aon_860701-2Creview_of_Tech_Spec_3.3.3.8_Revealed_Four_Differences_Between_Installed_Fire_Detection_Zones_-26_Operability_Requirements.Caused_by_P…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000346/LER-1986-025, :on 860701,review of Tech Spec 3.3.3.8 Revealed Four Differences Between Installed Fire Detection Zones & Operability Requirements.Caused by Personnel Error.Fire Watch Established

LER-1986-007, :on 860307,plant Heated Above 200 F Although Listed Transmitters Not Resealed,Per Environ Qualification Requirements.Caused by Not Recognizing Environ Status Should Have Been Restored.Procedures Reviewed
type: Subject
label: 05000247/LER-1986-007, :on 860307,plant Heated Above 200 F Although Listed Transmitters Not Resealed,Per Environ Qualification Requirements.Caused by Not Recognizing Environ Status Should Have Been Restored.Procedures Reviewed
page: https://kanterella.com/05000247/LER-2D1986-2D007-2C_-3Aon_860307-2Cplant_Heated_Above_200_F_Although_Listed_Transmitters_Not_Resealed-2CPer_Environ_Qualification_Requirements.Caused_by_Not_Recognizing…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000247/LER-1986-007, :on 860307,plant Heated Above 200 F Although Listed Transmitters Not Resealed,Per Environ Qualification Requirements.Caused by Not Recognizing Environ Status Should Have Been Restored.Procedures Reviewed

LER-1986-016, :on 860611,both Squib Valve Detonators Shorted After Firing & Control Power Transformer Fuse Blew,Causing Pump Motor Trip.Caused by Improper Fuse Coordination.Fuse Coordination Corrected
type: Subject
label: 05000263/LER-1986-016, :on 860611,both Squib Valve Detonators Shorted After Firing & Control Power Transformer Fuse Blew,Causing Pump Motor Trip.Caused by Improper Fuse Coordination.Fuse Coordination Corrected
page: https://kanterella.com/05000263/LER-2D1986-2D016-2C_-3Aon_860611-2Cboth_Squib_Valve_Detonators_Shorted_After_Firing_-26_Control_Power_Transformer_Fuse_Blew-2CCausing_Pump_Motor_Trip.Caused_by_Improper…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000263/LER-1986-016, :on 860611,both Squib Valve Detonators Shorted After Firing & Control Power Transformer Fuse Blew,Causing Pump Motor Trip.Caused by Improper Fuse Coordination.Fuse Coordination Corrected

LER-1986-008-02, :on 860307,determined That Test Procedure Omits Exercising Station Blackout Relays in Automatic Feedwater Pump Logic.Cause Unknown.Procedure OST-162 Will Be Revised to Ensure Components Tested
type: Subject
label: 05000261/LER-1986-008-02, :on 860307,determined That Test Procedure Omits Exercising Station Blackout Relays in Automatic Feedwater Pump Logic.Cause Unknown.Procedure OST-162 Will Be Revised to Ensure Components Tested
page: https://kanterella.com/05000261/LER-2D1986-2D008-2D02-2C_-3Aon_860307-2Cdetermined_That_Test_Procedure_Omits_Exercising_Station_Blackout_Relays_in_Automatic_Feedwater_Pump_Logic.Cause_Unknown.Procedur…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000261/LER-1986-008-02, :on 860307,determined That Test Procedure Omits Exercising Station Blackout Relays in Automatic Feedwater Pump Logic.Cause Unknown.Procedure OST-162 Will Be Revised to Ensure Components Tested

LER-1986-017, :on 860415,LPCI Outboard Primary Containment Isolation Valve Isolated Causing Shutdown Cooling Capability Loss.Caused by Blown Fuses from Inadvertent Short of Relay Contacts Due to Personnel Error.Valve Reopened
type: Subject
label: 05000321/LER-1986-017, :on 860415,LPCI Outboard Primary Containment Isolation Valve Isolated Causing Shutdown Cooling Capability Loss.Caused by Blown Fuses from Inadvertent Short of Relay Contacts Due to Personnel Error.Valve Reopened
page: https://kanterella.com/05000321/LER-2D1986-2D017-2C_-3Aon_860415-2CLPCI_Outboard_Primary_Containment_Isolation_Valve_Isolated_Causing_Shutdown_Cooling_Capability_Loss.Caused_by_Blown_Fuses_from_Inadve…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000321/LER-1986-017, :on 860415,LPCI Outboard Primary Containment Isolation Valve Isolated Causing Shutdown Cooling Capability Loss.Caused by Blown Fuses from Inadvertent Short of Relay Contacts Due to Personnel Error.Valve Reopened

LER-1986-002, :on 860122,discovered That 4 H Surveillance Frequency Exceeded on Four Occasions Between 851023-26.Cause Attributed to Lack of Procedural Control.Procedural Requirements Implemented
type: Subject
label: 05000316/LER-1986-002, :on 860122,discovered That 4 H Surveillance Frequency Exceeded on Four Occasions Between 851023-26.Cause Attributed to Lack of Procedural Control.Procedural Requirements Implemented
page: https://kanterella.com/05000316/LER-2D1986-2D002-2C_-3Aon_860122-2Cdiscovered_That_4_H_Surveillance_Frequency_Exceeded_on_Four_Occasions_Between_851023-2D26.Cause_Attributed_to_Lack_of_Procedural_Cont…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000316/LER-1986-002, :on 860122,discovered That 4 H Surveillance Frequency Exceeded on Four Occasions Between 851023-26.Cause Attributed to Lack of Procedural Control.Procedural Requirements Implemented

LER-1985-011, :on 851015,reactor Pressure Spiked & Unit Auto Scrammed on High Power When MSIV B21-FO22a Auto Closed. Caused by Failure of three-way Solenoid Valve Assembly.Valve Assembly Replaced
type: Subject
label: 05000324/LER-1985-011, :on 851015,reactor Pressure Spiked & Unit Auto Scrammed on High Power When MSIV B21-FO22a Auto Closed. Caused by Failure of three-way Solenoid Valve Assembly.Valve Assembly Replaced
page: https://kanterella.com/05000324/LER-2D1985-2D011-2C_-3Aon_851015-2Creactor_Pressure_Spiked_-26_Unit_Auto_Scrammed_on_High_Power_When_MSIV_B21-2DFO22a_Auto_Closed._Caused_by_Failure_of_three-2Dway_Sole…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000324/LER-1985-011, :on 851015,reactor Pressure Spiked & Unit Auto Scrammed on High Power When MSIV B21-FO22a Auto Closed. Caused by Failure of three-way Solenoid Valve Assembly.Valve Assembly Replaced

LER-1985-047, :on 851220,use of GE Silicone Sealant (RTV-102) on Both Drywell Personnel Airlock Doors Prevented Adequate Leak Rate Testing of Door Seals.Caused by Personnel Error. New Seals Installed
type: Subject
label: 05000321/LER-1985-047, :on 851220,use of GE Silicone Sealant (RTV-102) on Both Drywell Personnel Airlock Doors Prevented Adequate Leak Rate Testing of Door Seals.Caused by Personnel Error. New Seals Installed
page: https://kanterella.com/05000321/LER-2D1985-2D047-2C_-3Aon_851220-2Cuse_of_GE_Silicone_Sealant_-28RTV-2D102-29_on_Both_Drywell_Personnel_Airlock_Doors_Prevented_Adequate_Leak_Rate_Testing_of_Door_Seals…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000321/LER-1985-047, :on 851220,use of GE Silicone Sealant (RTV-102) on Both Drywell Personnel Airlock Doors Prevented Adequate Leak Rate Testing of Door Seals.Caused by Personnel Error. New Seals Installed

LER-1986-004-05, :on 860217-20,core Thermal Power Limit Violated for 41 H.Caused by Reactor Feedpump 2C Flow Transmitter Out of Calibr.Work Request Issued to Install Protective Barrier Around Transmitter
type: Subject
label: 05000237/LER-1986-004-05, :on 860217-20,core Thermal Power Limit Violated for 41 H.Caused by Reactor Feedpump 2C Flow Transmitter Out of Calibr.Work Request Issued to Install Protective Barrier Around Transmitter
page: https://kanterella.com/05000237/LER-2D1986-2D004-2D05-2C_-3Aon_860217-2D20-2Ccore_Thermal_Power_Limit_Violated_for_41_H.Caused_by_Reactor_Feedpump_2C_Flow_Transmitter_Out_of_Calibr.Work_Request_Issued…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000237/LER-1986-004-05, :on 860217-20,core Thermal Power Limit Violated for 41 H.Caused by Reactor Feedpump 2C Flow Transmitter Out of Calibr.Work Request Issued to Install Protective Barrier Around Transmitter

LER-1985-044, :on 851010,uncomplicated Reactor Trip Occurred. Caused by High Water Level in Steam Generator 2 When Control Board Operator Increased Feedwater Flow to Steam Generators. New Guidelines Issued
type: Subject
label: 05000382/LER-1985-044, :on 851010,uncomplicated Reactor Trip Occurred. Caused by High Water Level in Steam Generator 2 When Control Board Operator Increased Feedwater Flow to Steam Generators. New Guidelines Issued
page: https://kanterella.com/05000382/LER-2D1985-2D044-2C_-3Aon_851010-2Cuncomplicated_Reactor_Trip_Occurred._Caused_by_High_Water_Level_in_Steam_Generator_2_When_Control_Board_Operator_Increased_Feedwater_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000382/LER-1985-044, :on 851010,uncomplicated Reactor Trip Occurred. Caused by High Water Level in Steam Generator 2 When Control Board Operator Increased Feedwater Flow to Steam Generators. New Guidelines Issued

LER-1985-036-01, :on 851119,reactor Tripped Due to Feedwater Pump Turbine Trip on High Discharge Pressure.Caused by Rod Control Sys Not Lowering Power Enough During Turbine Runback.Failed Fuse Will Be Replaced
type: Subject
label: 05000369/LER-1985-036-01, :on 851119,reactor Tripped Due to Feedwater Pump Turbine Trip on High Discharge Pressure.Caused by Rod Control Sys Not Lowering Power Enough During Turbine Runback.Failed Fuse Will Be Replaced
page: https://kanterella.com/05000369/LER-2D1985-2D036-2D01-2C_-3Aon_851119-2Creactor_Tripped_Due_to_Feedwater_Pump_Turbine_Trip_on_High_Discharge_Pressure.Caused_by_Rod_Control_Sys_Not_Lowering_Power_Enoug…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000369/LER-1985-036-01, :on 851119,reactor Tripped Due to Feedwater Pump Turbine Trip on High Discharge Pressure.Caused by Rod Control Sys Not Lowering Power Enough During Turbine Runback.Failed Fuse Will Be Replaced

05000387/LER-1985-023, :on 850611,manual Isolation Valve 141005 Found Open.Caused by Inability to Perform Required Surveillance Testing on Excess Flow Check Valve XV-141F009.Procedures Revised
type: Subject
page: https://kanterella.com/05000387/LER-2D1985-2D023-2C_-3Aon_850611-2Cmanual_Isolation_Valve_141005_Found_Open.Caused_by_Inability_to_Perform_Required_Surveillance_Testing_on_Excess_Flow_Check_Valve_XV-2…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000387/LER-1985-023, :on 850611,manual Isolation Valve 141005 Found Open.Caused by Inability to Perform Required Surveillance Testing on Excess Flow Check Valve XV-141F009.Procedures Revised

LER-1985-024-02, :on 851014,gradual Decrease in Indicated Value of full-power delta-T Identified.Caused by Change in Hot Leg Temp Streaming Pattern Supplying Coolant Samples to Temp Sensors.Calibr Procedure Developed
type: Subject
label: 05000370/LER-1985-024-02, :on 851014,gradual Decrease in Indicated Value of full-power delta-T Identified.Caused by Change in Hot Leg Temp Streaming Pattern Supplying Coolant Samples to Temp Sensors.Calibr Procedure Developed
page: https://kanterella.com/05000370/LER-2D1985-2D024-2D02-2C_-3Aon_851014-2Cgradual_Decrease_in_Indicated_Value_of_full-2Dpower_delta-2DT_Identified.Caused_by_Change_in_Hot_Leg_Temp_Streaming_Pattern_Supp…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000370/LER-1985-024-02, :on 851014,gradual Decrease in Indicated Value of full-power delta-T Identified.Caused by Change in Hot Leg Temp Streaming Pattern Supplying Coolant Samples to Temp Sensors.Calibr Procedure Developed

LER-1985-024, :on 850712,temporary Change to safety-related Procedures Not Reviewed by Plant Staff Review Committee & Approved within 14 Day Tech Spec Time Limit.Caused by Change in Processing Procedure
type: Subject
label: 05000275/LER-1985-024, :on 850712,temporary Change to safety-related Procedures Not Reviewed by Plant Staff Review Committee & Approved within 14 Day Tech Spec Time Limit.Caused by Change in Processing Procedure
page: https://kanterella.com/05000275/LER-2D1985-2D024-2C_-3Aon_850712-2Ctemporary_Change_to_safety-2Drelated_Procedures_Not_Reviewed_by_Plant_Staff_Review_Committee_-26_Approved_within_14_Day_Tech_Spec_Tim…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000275/LER-1985-024, :on 850712,temporary Change to safety-related Procedures Not Reviewed by Plant Staff Review Committee & Approved within 14 Day Tech Spec Time Limit.Caused by Change in Processing Procedure

05000293/LER-1997-001, :on 970120,very Small Quantity of Unaccountable Special Nuclear Material Was Identifed Due to Less than Effective Methods for Control & Accounting of Devices. Procedures Revised
type: Subject
page: https://kanterella.com/05000293/LER-2D1997-2D001-2C_-3Aon_970120-2Cvery_Small_Quantity_of_Unaccountable_Special_Nuclear_Material_Was_Identifed_Due_to_Less_than_Effective_Methods_for_Control_-26_Accoun…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000293/LER-1997-001, :on 970120,very Small Quantity of Unaccountable Special Nuclear Material Was Identifed Due to Less than Effective Methods for Control & Accounting of Devices. Procedures Revised

LER-1985-016-05, :on 850731,operator Accidentally Tripped Over & Broke Off Control Air Line to Fire Protection Containment Isolation Valve 1FCV-FP08.Broken Air Line Repaired & Valve Returned to Position
type: Subject
label: 05000295/LER-1985-016-05, :on 850731,operator Accidentally Tripped Over & Broke Off Control Air Line to Fire Protection Containment Isolation Valve 1FCV-FP08.Broken Air Line Repaired & Valve Returned to Position
page: https://kanterella.com/05000295/LER-2D1985-2D016-2D05-2C_-3Aon_850731-2Coperator_Accidentally_Tripped_Over_-26_Broke_Off_Control_Air_Line_to_Fire_Protection_Containment_Isolation_Valve_1FCV-2DFP08.Bro…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000295/LER-1985-016-05, :on 850731,operator Accidentally Tripped Over & Broke Off Control Air Line to Fire Protection Containment Isolation Valve 1FCV-FP08.Broken Air Line Repaired & Valve Returned to Position

05000397/LER-1985-052, :on 850801,discovered Procedure Deviation Issued on 850608 Incorrectly Changed Containment Isolation Valve Closure Time.Procedure Mod Issued
type: Subject
page: https://kanterella.com/05000397/LER-2D1985-2D052-2C_-3Aon_850801-2Cdiscovered_Procedure_Deviation_Issued_on_850608_Incorrectly_Changed_Containment_Isolation_Valve_Closure_Time.Procedure_Mod_Issued
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000397/LER-1985-052, :on 850801,discovered Procedure Deviation Issued on 850608 Incorrectly Changed Containment Isolation Valve Closure Time.Procedure Mod Issued

LER-1985-018, :on 850725,fire Door from Svc Bldg to Diesel Generator a Room Inoperable Due to Security Hardware Repairs.Fire Watch Not Posted Due to Confusion Over Operability Requirements of Fire Doors
type: Subject
label: 05000213/LER-1985-018, :on 850725,fire Door from Svc Bldg to Diesel Generator a Room Inoperable Due to Security Hardware Repairs.Fire Watch Not Posted Due to Confusion Over Operability Requirements of Fire Doors
page: https://kanterella.com/05000213/LER-2D1985-2D018-2C_-3Aon_850725-2Cfire_Door_from_Svc_Bldg_to_Diesel_Generator_a_Room_Inoperable_Due_to_Security_Hardware_Repairs.Fire_Watch_Not_Posted_Due_to_Confusion…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000213/LER-1985-018, :on 850725,fire Door from Svc Bldg to Diesel Generator a Room Inoperable Due to Security Hardware Repairs.Fire Watch Not Posted Due to Confusion Over Operability Requirements of Fire Doors

LER-1985-008-01, :on 850724,MSIV Failed to Fully Close & Declared Inoperable.Caused by Oil Deficiency Due to Gas Bubble in Hydraulic Fluid Header & Addl Component Malfunctions.Suppressor Bladders Replaced
type: Subject
label: 05000318/LER-1985-008-01, :on 850724,MSIV Failed to Fully Close & Declared Inoperable.Caused by Oil Deficiency Due to Gas Bubble in Hydraulic Fluid Header & Addl Component Malfunctions.Suppressor Bladders Replaced
page: https://kanterella.com/05000318/LER-2D1985-2D008-2D01-2C_-3Aon_850724-2CMSIV_Failed_to_Fully_Close_-26_Declared_Inoperable.Caused_by_Oil_Deficiency_Due_to_Gas_Bubble_in_Hydraulic_Fluid_Header_-26_Addl…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000318/LER-1985-008-01, :on 850724,MSIV Failed to Fully Close & Declared Inoperable.Caused by Oil Deficiency Due to Gas Bubble in Hydraulic Fluid Header & Addl Component Malfunctions.Suppressor Bladders Replaced

LER-1984-045, :on 840625,auxiliary Control Air Compressor A-A Taken Out of Svc.On 840709,compressor B-B Removed from Svc. Power Reduction to Mode 3 Initiated But Stopped When Compressor B-B Returned to Svc
type: Subject
label: 05000327/LER-1984-045, :on 840625,auxiliary Control Air Compressor A-A Taken Out of Svc.On 840709,compressor B-B Removed from Svc. Power Reduction to Mode 3 Initiated But Stopped When Compressor B-B Returned to Svc
page: https://kanterella.com/05000327/LER-2D1984-2D045-2C_-3Aon_840625-2Cauxiliary_Control_Air_Compressor_A-2DA_Taken_Out_of_Svc.On_840709-2Ccompressor_B-2DB_Removed_from_Svc._Power_Reduction_to_Mode_3_Init…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000327/LER-1984-045, :on 840625,auxiliary Control Air Compressor A-A Taken Out of Svc.On 840709,compressor B-B Removed from Svc. Power Reduction to Mode 3 Initiated But Stopped When Compressor B-B Returned to Svc

05000304/LER-1985-013-07, :on 850707,steam Generator Blowdown Radiation Monitor 2RE0019 High Alarmed,Causing Isolation of Blowdown. Notice Issued to Operating Dept Reiterating Proper Procedures
type: Subject
page: https://kanterella.com/05000304/LER-2D1985-2D013-2D07-2C_-3Aon_850707-2Csteam_Generator_Blowdown_Radiation_Monitor_2RE0019_High_Alarmed-2CCausing_Isolation_of_Blowdown._Notice_Issued_to_Operating_Dept…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000304/LER-1985-013-07, :on 850707,steam Generator Blowdown Radiation Monitor 2RE0019 High Alarmed,Causing Isolation of Blowdown. Notice Issued to Operating Dept Reiterating Proper Procedures

LER-1985-032, :on 850918,quarterly Surveillance Test for Drywell Main Exhaust Inboard Isolation Valve T48-F319 Not Performed Per Tech Specs.Caused by Personnel Error.Limiting Condition for Operation Initiated
type: Subject
label: 05000321/LER-1985-032, :on 850918,quarterly Surveillance Test for Drywell Main Exhaust Inboard Isolation Valve T48-F319 Not Performed Per Tech Specs.Caused by Personnel Error.Limiting Condition for Operation Initiated
page: https://kanterella.com/05000321/LER-2D1985-2D032-2C_-3Aon_850918-2Cquarterly_Surveillance_Test_for_Drywell_Main_Exhaust_Inboard_Isolation_Valve_T48-2DF319_Not_Performed_Per_Tech_Specs.Caused_by_Person…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000321/LER-1985-032, :on 850918,quarterly Surveillance Test for Drywell Main Exhaust Inboard Isolation Valve T48-F319 Not Performed Per Tech Specs.Caused by Personnel Error.Limiting Condition for Operation Initiated

LER-1985-032, :on 850704,reactor Trip Occurred Due to Axial Shape Index Being Out of Range Allowed by Core Protection Calculator.Caused by Xenon Distribution.Plant Operators Given Temporary Guidance on Returning Power
type: Subject
label: 05000382/LER-1985-032, :on 850704,reactor Trip Occurred Due to Axial Shape Index Being Out of Range Allowed by Core Protection Calculator.Caused by Xenon Distribution.Plant Operators Given Temporary Guidance on Returning Power
page: https://kanterella.com/05000382/LER-2D1985-2D032-2C_-3Aon_850704-2Creactor_Trip_Occurred_Due_to_Axial_Shape_Index_Being_Out_of_Range_Allowed_by_Core_Protection_Calculator.Caused_by_Xenon_Distribution.…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000382/LER-1985-032, :on 850704,reactor Trip Occurred Due to Axial Shape Index Being Out of Range Allowed by Core Protection Calculator.Caused by Xenon Distribution.Plant Operators Given Temporary Guidance on Returning Power

LER-1985-010-04, :on 850626,inadvertent Secondary Containment Isolation Occurred Due to Failure of Fuse in Panel 9-42. Cause Not Determined.Blown Fuse Replaced.Isolation Signal Reset.Failure Considered Random
type: Subject
label: 05000260/LER-1985-010-04, :on 850626,inadvertent Secondary Containment Isolation Occurred Due to Failure of Fuse in Panel 9-42. Cause Not Determined.Blown Fuse Replaced.Isolation Signal Reset.Failure Considered Random
page: https://kanterella.com/05000260/LER-2D1985-2D010-2D04-2C_-3Aon_850626-2Cinadvertent_Secondary_Containment_Isolation_Occurred_Due_to_Failure_of_Fuse_in_Panel_9-2D42._Cause_Not_Determined.Blown_Fuse_Rep…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000260/LER-1985-010-04, :on 850626,inadvertent Secondary Containment Isolation Occurred Due to Failure of Fuse in Panel 9-42. Cause Not Determined.Blown Fuse Replaced.Isolation Signal Reset.Failure Considered Random

LER-1985-026, :on 850626,small Opening Discovered in Penetration of Emergency Diesel Generator B Room Fire Wall. Condition Thought to Exist Since Const of Fire Wall.Fire Watch Posted & Wall Repaired
type: Subject
label: 05000382/LER-1985-026, :on 850626,small Opening Discovered in Penetration of Emergency Diesel Generator B Room Fire Wall. Condition Thought to Exist Since Const of Fire Wall.Fire Watch Posted & Wall Repaired
page: https://kanterella.com/05000382/LER-2D1985-2D026-2C_-3Aon_850626-2Csmall_Opening_Discovered_in_Penetration_of_Emergency_Diesel_Generator_B_Room_Fire_Wall._Condition_Thought_to_Exist_Since_Const_of_Fir…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000382/LER-1985-026, :on 850626,small Opening Discovered in Penetration of Emergency Diesel Generator B Room Fire Wall. Condition Thought to Exist Since Const of Fire Wall.Fire Watch Posted & Wall Repaired

LER-1985-019-01, :on 850429,during Cold Shutdown,Reactor Water Cleanup Primary Containment Inboard Isolation Valve 2G31-F001 Isolated.Caused by Personnel Error.Resistance Temp Detectors Relabeled
type: Subject
label: 05000366/LER-1985-019-01, :on 850429,during Cold Shutdown,Reactor Water Cleanup Primary Containment Inboard Isolation Valve 2G31-F001 Isolated.Caused by Personnel Error.Resistance Temp Detectors Relabeled
page: https://kanterella.com/05000366/LER-2D1985-2D019-2D01-2C_-3Aon_850429-2Cduring_Cold_Shutdown-2CReactor_Water_Cleanup_Primary_Containment_Inboard_Isolation_Valve_2G31-2DF001_Isolated.Caused_by_Personne…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000366/LER-1985-019-01, :on 850429,during Cold Shutdown,Reactor Water Cleanup Primary Containment Inboard Isolation Valve 2G31-F001 Isolated.Caused by Personnel Error.Resistance Temp Detectors Relabeled

Reactor lo-lo Water Level Sensor RE02C Failed to Trip at Setpoint Required by Procedure.Core Spray Instrumentation Channel Test Procedure Revised
type: Subject
label: 05000219/LER-1984-024, :on 841027,one of Two Switches Associated W/ Reactor lo-lo Water Level Sensor RE02C Failed to Trip at Setpoint Required by Procedure.Core Spray Instrumentation Channel Test Procedure Revised
page: https://kanterella.com/05000219/LER-2D1984-2D024-2C_-3Aon_841027-2Cone_of_Two_Switches_Associated_W/_Reactor_lo-2Dlo_Water_Level_Sensor_RE02C_Failed_to_Trip_at_Setpoint_Required_by_Procedure.Core_Spra…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000219/LER-1984-024, :on 841027,one of Two Switches Associated W/ Reactor lo-lo Water Level Sensor RE02C Failed to Trip at Setpoint Required by Procedure.Core Spray Instrumentation Channel Test Procedure Revised

Applicable Personnel & Procedure Revised
type: Subject
label: 05000275/LER-1985-016, :on 850520,automatic Reactor Trip Occurred. Caused by Deenergization of Bistables for Source Range Channel 32 (Jc)(Ri) Due to Voltage Transient.Event Reviewed W/Applicable Personnel & Procedure Revised
page: https://kanterella.com/05000275/LER-2D1985-2D016-2C_-3Aon_850520-2Cautomatic_Reactor_Trip_Occurred._Caused_by_Deenergization_of_Bistables_for_Source_Range_Channel_32_-28Jc-29-28Ri-29_Due_to_Voltage_Tr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000275/LER-1985-016, :on 850520,automatic Reactor Trip Occurred. Caused by Deenergization of Bistables for Source Range Channel 32 (Jc)(Ri) Due to Voltage Transient.Event Reviewed W/Applicable Personnel & Procedure Revised

05000382/LER-1985-018, :on 850511,unidentified Leakage Noticed.Leak Originated in Packing Glands of Pressurizer Spray Valves RC-301A,B.Packing Glands Modified
type: Subject
page: https://kanterella.com/05000382/LER-2D1985-2D018-2C_-3Aon_850511-2Cunidentified_Leakage_Noticed.Leak_Originated_in_Packing_Glands_of_Pressurizer_Spray_Valves_RC-2D301A-2CB.Packing_Glands_Modified
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000382/LER-1985-018, :on 850511,unidentified Leakage Noticed.Leak Originated in Packing Glands of Pressurizer Spray Valves RC-301A,B.Packing Glands Modified

LER-1996-005, :on 960419,automatic Scram Occurred Due to Turbine Vibration During Planned Power Reduction.Turbine Vibration Trip Setting That Initiates Trip of Turbine Due to High Vibration Changed
type: Subject
label: 05000293/LER-1996-005, :on 960419,automatic Scram Occurred Due to Turbine Vibration During Planned Power Reduction.Turbine Vibration Trip Setting That Initiates Trip of Turbine Due to High Vibration Changed
page: https://kanterella.com/05000293/LER-2D1996-2D005-2C_-3Aon_960419-2Cautomatic_Scram_Occurred_Due_to_Turbine_Vibration_During_Planned_Power_Reduction.Turbine_Vibration_Trip_Setting_That_Initiates_Trip_o…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000293/LER-1996-005, :on 960419,automatic Scram Occurred Due to Turbine Vibration During Planned Power Reduction.Turbine Vibration Trip Setting That Initiates Trip of Turbine Due to High Vibration Changed

LER-1985-015, :on 850404,RCIC Sys Inadvertently Isolated When Bypass Switch Mistakenly Returned to Normal During Testing.Caused by Misunderstanding Between Personnel.Sys Restored.Need for Clear Communication Stressed
type: Subject
label: 05000416/LER-1985-015, :on 850404,RCIC Sys Inadvertently Isolated When Bypass Switch Mistakenly Returned to Normal During Testing.Caused by Misunderstanding Between Personnel.Sys Restored.Need for Clear Communication Stressed
page: https://kanterella.com/05000416/LER-2D1985-2D015-2C_-3Aon_850404-2CRCIC_Sys_Inadvertently_Isolated_When_Bypass_Switch_Mistakenly_Returned_to_Normal_During_Testing.Caused_by_Misunderstanding_Between_Pe…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000416/LER-1985-015, :on 850404,RCIC Sys Inadvertently Isolated When Bypass Switch Mistakenly Returned to Normal During Testing.Caused by Misunderstanding Between Personnel.Sys Restored.Need for Clear Communication Stressed

05000387/LER-1984-011, :on 840301,two Initiations of Control Room Emergency Outside Air Supply Sys & Standby Gas Treatment Sys Occurred.Caused by Voltage Drop & Incorrect Removal of Test Jumper Cables
type: Subject
page: https://kanterella.com/05000387/LER-2D1984-2D011-2C_-3Aon_840301-2Ctwo_Initiations_of_Control_Room_Emergency_Outside_Air_Supply_Sys_-26_Standby_Gas_Treatment_Sys_Occurred.Caused_by_Voltage_Drop_-26_In…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000387/LER-1984-011, :on 840301,two Initiations of Control Room Emergency Outside Air Supply Sys & Standby Gas Treatment Sys Occurred.Caused by Voltage Drop & Incorrect Removal of Test Jumper Cables

LER-1985-009-01, :on 850319,RCIC Steam Supply Primary Containment Inboard Isolation Valve 2E51-F007 Inadvertently Closed.Caused by Personnel Error.Isolation Logic Reset & Valve Returned to Open Position
type: Subject
label: 05000366/LER-1985-009-01, :on 850319,RCIC Steam Supply Primary Containment Inboard Isolation Valve 2E51-F007 Inadvertently Closed.Caused by Personnel Error.Isolation Logic Reset & Valve Returned to Open Position
page: https://kanterella.com/05000366/LER-2D1985-2D009-2D01-2C_-3Aon_850319-2CRCIC_Steam_Supply_Primary_Containment_Inboard_Isolation_Valve_2E51-2DF007_Inadvertently_Closed.Caused_by_Personnel_Error.Isolati…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000366/LER-1985-009-01, :on 850319,RCIC Steam Supply Primary Containment Inboard Isolation Valve 2E51-F007 Inadvertently Closed.Caused by Personnel Error.Isolation Logic Reset & Valve Returned to Open Position

LER-1985-009-07, :on 850320,fuel Pool Radiation Monitor 2A Tripped.Caused by Transfer of Steam Dryer from Reactor Cavity to Dryer Separator Storage Pit Due to Procedural Inadequacy.Procedures Being Revised
type: Subject
label: 05000265/LER-1985-009-07, :on 850320,fuel Pool Radiation Monitor 2A Tripped.Caused by Transfer of Steam Dryer from Reactor Cavity to Dryer Separator Storage Pit Due to Procedural Inadequacy.Procedures Being Revised
page: https://kanterella.com/05000265/LER-2D1985-2D009-2D07-2C_-3Aon_850320-2Cfuel_Pool_Radiation_Monitor_2A_Tripped.Caused_by_Transfer_of_Steam_Dryer_from_Reactor_Cavity_to_Dryer_Separator_Storage_Pit_Due_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000265/LER-1985-009-07, :on 850320,fuel Pool Radiation Monitor 2A Tripped.Caused by Transfer of Steam Dryer from Reactor Cavity to Dryer Separator Storage Pit Due to Procedural Inadequacy.Procedures Being Revised

LER-1984-064, :on 841217,reactor Trip Received on Rapidly Decreasing Pressurizer Pressure.Caused by Lifting of PORVs & Fully Opened Pressurizer Spray Valves.Test Procedure Revised & Test Repeated Successfully
type: Subject
label: 05000483/LER-1984-064, :on 841217,reactor Trip Received on Rapidly Decreasing Pressurizer Pressure.Caused by Lifting of PORVs & Fully Opened Pressurizer Spray Valves.Test Procedure Revised & Test Repeated Successfully
page: https://kanterella.com/05000483/LER-2D1984-2D064-2C_-3Aon_841217-2Creactor_Trip_Received_on_Rapidly_Decreasing_Pressurizer_Pressure.Caused_by_Lifting_of_PORVs_-26_Fully_Opened_Pressurizer_Spray_Valves…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000483/LER-1984-064, :on 841217,reactor Trip Received on Rapidly Decreasing Pressurizer Pressure.Caused by Lifting of PORVs & Fully Opened Pressurizer Spray Valves.Test Procedure Revised & Test Repeated Successfully

Plant in Cold Shutdown,Source Range & Intermediate Range Trip Signal Occurred.Caused by Voltage Transient Induced Upon Vital Bus 2 During Replacement of Key Switch
type: Subject
label: 05000280/LER-1984-025, :on 841203,during Refueling Outage W/Plant in Cold Shutdown,Source Range & Intermediate Range Trip Signal Occurred.Caused by Voltage Transient Induced Upon Vital Bus 2 During Replacement of Key Switch
page: https://kanterella.com/05000280/LER-2D1984-2D025-2C_-3Aon_841203-2Cduring_Refueling_Outage_W/Plant_in_Cold_Shutdown-2CSource_Range_-26_Intermediate_Range_Trip_Signal_Occurred.Caused_by_Voltage_Transie…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000280/LER-1984-025, :on 841203,during Refueling Outage W/Plant in Cold Shutdown,Source Range & Intermediate Range Trip Signal Occurred.Caused by Voltage Transient Induced Upon Vital Bus 2 During Replacement of Key Switch

LER-1984-039, :on 840915,analog Channel Operational Test of Load Shedder & Emergency Load Sequencer Failed Due to Lack of 48-volt Dc Output from Undervoltage Power Supply Assembly.Channel Placed in Tripped Position
type: Subject
label: 05000483/LER-1984-039, :on 840915,analog Channel Operational Test of Load Shedder & Emergency Load Sequencer Failed Due to Lack of 48-volt Dc Output from Undervoltage Power Supply Assembly.Channel Placed in Tripped Position
page: https://kanterella.com/05000483/LER-2D1984-2D039-2C_-3Aon_840915-2Canalog_Channel_Operational_Test_of_Load_Shedder_-26_Emergency_Load_Sequencer_Failed_Due_to_Lack_of_48-2Dvolt_Dc_Output_from_Undervolt…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000483/LER-1984-039, :on 840915,analog Channel Operational Test of Load Shedder & Emergency Load Sequencer Failed Due to Lack of 48-volt Dc Output from Undervoltage Power Supply Assembly.Channel Placed in Tripped Position

Sros & Shift Supervisors
type: Subject
label: 05000373/LER-1996-001-06, :on 960213,missed TS Required Fire Protection Valve Position Verification Occurred.Caused by Human Performance.Operating Dept Senior Mgt Reinforced Expectations W/Sros & Shift Supervisors
page: https://kanterella.com/05000373/LER-2D1996-2D001-2D06-2C_-3Aon_960213-2Cmissed_TS_Required_Fire_Protection_Valve_Position_Verification_Occurred.Caused_by_Human_Performance.Operating_Dept_Senior_Mgt_Re…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000373/LER-1996-001-06, :on 960213,missed TS Required Fire Protection Valve Position Verification Occurred.Caused by Human Performance.Operating Dept Senior Mgt Reinforced Expectations W/Sros & Shift Supervisors

LER-1984-031, :on 841031,reactor Water Cleanup Inboard Isolation Valve 2G31-F002 Isolated Due to High Equipment Room Temp.Caused by Pump Shaft Seal & Two Pump Vent Valves Leaking.Seal Replaced & Valves Repaired
type: Subject
label: 05000366/LER-1984-031, :on 841031,reactor Water Cleanup Inboard Isolation Valve 2G31-F002 Isolated Due to High Equipment Room Temp.Caused by Pump Shaft Seal & Two Pump Vent Valves Leaking.Seal Replaced & Valves Repaired
page: https://kanterella.com/05000366/LER-2D1984-2D031-2C_-3Aon_841031-2Creactor_Water_Cleanup_Inboard_Isolation_Valve_2G31-2DF002_Isolated_Due_to_High_Equipment_Room_Temp.Caused_by_Pump_Shaft_Seal_-26_Two_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000366/LER-1984-031, :on 841031,reactor Water Cleanup Inboard Isolation Valve 2G31-F002 Isolated Due to High Equipment Room Temp.Caused by Pump Shaft Seal & Two Pump Vent Valves Leaking.Seal Replaced & Valves Repaired

LER-1984-016, :on 840815,spurious LOCA Signal Initiated Four RHR Pumps,Two Core Spray Pumps,Three Diesel Generators & HPCI & Rcic.Caused by Personnel Error in Completing Procedure Data Package
type: Subject
label: 05000366/LER-1984-016, :on 840815,spurious LOCA Signal Initiated Four RHR Pumps,Two Core Spray Pumps,Three Diesel Generators & HPCI & Rcic.Caused by Personnel Error in Completing Procedure Data Package
page: https://kanterella.com/05000366/LER-2D1984-2D016-2C_-3Aon_840815-2Cspurious_LOCA_Signal_Initiated_Four_RHR_Pumps-2CTwo_Core_Spray_Pumps-2CThree_Diesel_Generators_-26_HPCI_-26_Rcic.Caused_by_Personnel_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000366/LER-1984-016, :on 840815,spurious LOCA Signal Initiated Four RHR Pumps,Two Core Spray Pumps,Three Diesel Generators & HPCI & Rcic.Caused by Personnel Error in Completing Procedure Data Package

LER-1984-052, :on 840817,during Review of Procedure SI-144.2, Control Room Emergency Ventilation Sys Test, Discovered That Incorrect Calculation of Duct Area Resulted in Both Trains of Sys Left Lower than Specs
type: Subject
label: 05000327/LER-1984-052, :on 840817,during Review of Procedure SI-144.2, Control Room Emergency Ventilation Sys Test, Discovered That Incorrect Calculation of Duct Area Resulted in Both Trains of Sys Left Lower than Specs
page: https://kanterella.com/05000327/LER-2D1984-2D052-2C_-3Aon_840817-2Cduring_Review_of_Procedure_SI-2D144.2-2C_Control_Room_Emergency_Ventilation_Sys_Test-2C_Discovered_That_Incorrect_Calculation_of_Duct…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000327/LER-1984-052, :on 840817,during Review of Procedure SI-144.2, Control Room Emergency Ventilation Sys Test, Discovered That Incorrect Calculation of Duct Area Resulted in Both Trains of Sys Left Lower than Specs

LER-1995-040, :on 951218,EDG B Inadvertently Started Due to Improper Removal from Svc.Caused by Lack of Questioning Attitude by Operations Personnel.Addressed Communications Issues & Made Procedural Revs
type: Subject
label: 05000354/LER-1995-040, :on 951218,EDG B Inadvertently Started Due to Improper Removal from Svc.Caused by Lack of Questioning Attitude by Operations Personnel.Addressed Communications Issues & Made Procedural Revs
page: https://kanterella.com/05000354/LER-2D1995-2D040-2C_-3Aon_951218-2CEDG_B_Inadvertently_Started_Due_to_Improper_Removal_from_Svc.Caused_by_Lack_of_Questioning_Attitude_by_Operations_Personnel.Addressed…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000354/LER-1995-040, :on 951218,EDG B Inadvertently Started Due to Improper Removal from Svc.Caused by Lack of Questioning Attitude by Operations Personnel.Addressed Communications Issues & Made Procedural Revs

LER-1984-015, :on 840803,reactor Scram Received on Turbine Control Valve Fast Closure Subsequent to Generator Load Rejection.Caused by Component Failure.Safety Relief Valve a Top Works Will Be Replaced
type: Subject
label: 05000321/LER-1984-015, :on 840803,reactor Scram Received on Turbine Control Valve Fast Closure Subsequent to Generator Load Rejection.Caused by Component Failure.Safety Relief Valve a Top Works Will Be Replaced
page: https://kanterella.com/05000321/LER-2D1984-2D015-2C_-3Aon_840803-2Creactor_Scram_Received_on_Turbine_Control_Valve_Fast_Closure_Subsequent_to_Generator_Load_Rejection.Caused_by_Component_Failure.Safet…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000321/LER-1984-015, :on 840803,reactor Scram Received on Turbine Control Valve Fast Closure Subsequent to Generator Load Rejection.Caused by Component Failure.Safety Relief Valve a Top Works Will Be Replaced

05000456/LER-1995-019-03, :on 951207,manual Reactor Trip Initiated During Rod Drop Testing Due to Failed Testing Relays.Reactor Trip Breakers Opened
type: Subject
page: https://kanterella.com/05000456/LER-2D1995-2D019-2D03-2C_-3Aon_951207-2Cmanual_Reactor_Trip_Initiated_During_Rod_Drop_Testing_Due_to_Failed_Testing_Relays.Reactor_Trip_Breakers_Opened
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000456/LER-1995-019-03, :on 951207,manual Reactor Trip Initiated During Rod Drop Testing Due to Failed Testing Relays.Reactor Trip Breakers Opened

05000374/LER-1995-010-04, :on 951007,Unit Two Fire Door 615 Was Left Open Due to Personnel Error.Reviewed Fire Impairment Log & Was Determined No Active Fire Impairment for Fire Door 615
type: Subject
page: https://kanterella.com/05000374/LER-2D1995-2D010-2D04-2C_-3Aon_951007-2CUnit_Two_Fire_Door_615_Was_Left_Open_Due_to_Personnel_Error.Reviewed_Fire_Impairment_Log_-26_Was_Determined_No_Active_Fire_Impai…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000374/LER-1995-010-04, :on 951007,Unit Two Fire Door 615 Was Left Open Due to Personnel Error.Reviewed Fire Impairment Log & Was Determined No Active Fire Impairment for Fire Door 615

05000348/LER-1995-008, :on 950916,loop a Main Steam Line Isolation Valves (MSIV) Failed to Close Due to Personnel Error.Loop a MSIVs Vented & Closed,Test Procedure Modified & Operator Coached on Event
type: Subject
page: https://kanterella.com/05000348/LER-2D1995-2D008-2C_-3Aon_950916-2Cloop_a_Main_Steam_Line_Isolation_Valves_-28MSIV-29_Failed_to_Close_Due_to_Personnel_Error.Loop_a_MSIVs_Vented_-26_Closed-2CTest_Proce…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000348/LER-1995-008, :on 950916,loop a Main Steam Line Isolation Valves (MSIV) Failed to Close Due to Personnel Error.Loop a MSIVs Vented & Closed,Test Procedure Modified & Operator Coached on Event

LER-1995-007-01, :on 950927,discovered That Control Room Pressurization Units Moisture Controllers Incapable of Performing Intended Function Due to Procedural Inadequacy. Established Repetitive PM Tasks
type: Subject
label: 05000348/LER-1995-007-01, :on 950927,discovered That Control Room Pressurization Units Moisture Controllers Incapable of Performing Intended Function Due to Procedural Inadequacy. Established Repetitive PM Tasks
page: https://kanterella.com/05000348/LER-2D1995-2D007-2D01-2C_-3Aon_950927-2Cdiscovered_That_Control_Room_Pressurization_Units_Moisture_Controllers_Incapable_of_Performing_Intended_Function_Due_to_Procedur…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000348/LER-1995-007-01, :on 950927,discovered That Control Room Pressurization Units Moisture Controllers Incapable of Performing Intended Function Due to Procedural Inadequacy. Established Repetitive PM Tasks

LER-1984-040, :on 840608,Tech Spec Surveillance Requirement for Standby Diesel Generator Overspeed Trip Lockout Not Performed within Required Time.Caused by Erroneous Rev to Procedure.Procedure Revised Correctly
type: Subject
label: 05000327/LER-1984-040, :on 840608,Tech Spec Surveillance Requirement for Standby Diesel Generator Overspeed Trip Lockout Not Performed within Required Time.Caused by Erroneous Rev to Procedure.Procedure Revised Correctly
page: https://kanterella.com/05000327/LER-2D1984-2D040-2C_-3Aon_840608-2CTech_Spec_Surveillance_Requirement_for_Standby_Diesel_Generator_Overspeed_Trip_Lockout_Not_Performed_within_Required_Time.Caused_by_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000327/LER-1984-040, :on 840608,Tech Spec Surveillance Requirement for Standby Diesel Generator Overspeed Trip Lockout Not Performed within Required Time.Caused by Erroneous Rev to Procedure.Procedure Revised Correctly

LER-1984-012-01, :on 840526,specific Activity Sample of Reactor Coolant Showed Peak Dose Equivalent I-131 Level of 1.57 Uci Which Exceeded Tech Spec Limit.Caused by Fuel Element Defects in Reactor Core.Dose Equivalent Monitored Every 4 H
type: Subject
label: 05000280/LER-1984-012-01, :on 840526,specific Activity Sample of Reactor Coolant Showed Peak Dose Equivalent I-131 Level of 1.57 Uci Which Exceeded Tech Spec Limit.Caused by Fuel Element Defects in Reactor Core.Dose Equivalent Monitored Every 4 H
page: https://kanterella.com/05000280/LER-2D1984-2D012-2D01-2C_-3Aon_840526-2Cspecific_Activity_Sample_of_Reactor_Coolant_Showed_Peak_Dose_Equivalent_I-2D131_Level_of_1.57_Uci_Which_Exceeded_Tech_Spec_Limit…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000280/LER-1984-012-01, :on 840526,specific Activity Sample of Reactor Coolant Showed Peak Dose Equivalent I-131 Level of 1.57 Uci Which Exceeded Tech Spec Limit.Caused by Fuel Element Defects in Reactor Core.Dose Equivalent Monitored Every 4 H

LER-1984-004-01, :on 831117,source Leak Test Not Performed Prior to Installation of in-core Detector.Caused by Personnel Error & Procedure Not Requiring Signature Signoff.Procedure Revised to Require Signoff
type: Subject
label: 05000369/LER-1984-004-01, :on 831117,source Leak Test Not Performed Prior to Installation of in-core Detector.Caused by Personnel Error & Procedure Not Requiring Signature Signoff.Procedure Revised to Require Signoff
page: https://kanterella.com/05000369/LER-2D1984-2D004-2D01-2C_-3Aon_831117-2Csource_Leak_Test_Not_Performed_Prior_to_Installation_of_in-2Dcore_Detector.Caused_by_Personnel_Error_-26_Procedure_Not_Requiring…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000369/LER-1984-004-01, :on 831117,source Leak Test Not Performed Prior to Installation of in-core Detector.Caused by Personnel Error & Procedure Not Requiring Signature Signoff.Procedure Revised to Require Signoff

LER-1984-003-05, :on 840227,vital Inverter Failed.Caused by Blown Fuse Due to Incorrect Connection Which Caused Containment Ventilation Isolation.Containment Ventilation Isolation Reset & Inverter Returned to Svc
type: Subject
label: 05000328/LER-1984-003-05, :on 840227,vital Inverter Failed.Caused by Blown Fuse Due to Incorrect Connection Which Caused Containment Ventilation Isolation.Containment Ventilation Isolation Reset & Inverter Returned to Svc
page: https://kanterella.com/05000328/LER-2D1984-2D003-2D05-2C_-3Aon_840227-2Cvital_Inverter_Failed.Caused_by_Blown_Fuse_Due_to_Incorrect_Connection_Which_Caused_Containment_Ventilation_Isolation.Containmen…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000328/LER-1984-003-05, :on 840227,vital Inverter Failed.Caused by Blown Fuse Due to Incorrect Connection Which Caused Containment Ventilation Isolation.Containment Ventilation Isolation Reset & Inverter Returned to Svc

05000251/LER-1984-002-02, :on 840212,reactor Trip Occurred Due to Steam Flow Greater than Feed Flow Coincident.Caused by High Steam Flow Reading on Steam Generator 4A.Calibr Check Performed
type: Subject
page: https://kanterella.com/05000251/LER-2D1984-2D002-2D02-2C_-3Aon_840212-2Creactor_Trip_Occurred_Due_to_Steam_Flow_Greater_than_Feed_Flow_Coincident.Caused_by_High_Steam_Flow_Reading_on_Steam_Generator_4…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000251/LER-1984-002-02, :on 840212,reactor Trip Occurred Due to Steam Flow Greater than Feed Flow Coincident.Caused by High Steam Flow Reading on Steam Generator 4A.Calibr Check Performed

LER-1984-027, :on 840420,high Radiation Alarm Actuated, Causing Containment Ventilation Isolation to Occur.Caused by Voltage Spike Due to Electromagnetic Interference.Alarm Reset & Monitor Returned to Svc
type: Subject
label: 05000327/LER-1984-027, :on 840420,high Radiation Alarm Actuated, Causing Containment Ventilation Isolation to Occur.Caused by Voltage Spike Due to Electromagnetic Interference.Alarm Reset & Monitor Returned to Svc
page: https://kanterella.com/05000327/LER-2D1984-2D027-2C_-3Aon_840420-2Chigh_Radiation_Alarm_Actuated-2C_Causing_Containment_Ventilation_Isolation_to_Occur.Caused_by_Voltage_Spike_Due_to_Electromagnetic_In…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000327/LER-1984-027, :on 840420,high Radiation Alarm Actuated, Causing Containment Ventilation Isolation to Occur.Caused by Voltage Spike Due to Electromagnetic Interference.Alarm Reset & Monitor Returned to Svc

Loop 1 Steam Flow Greater than Feed Flow.Caused by Operator Error During Performance of FNP-2-STP-33.1.Relay Replaced
type: Subject
label: 05000348/LER-1984-005, :on 840409,reactor Tripped Due to Low Level in Steam Generator 2A in Conjunction W/Loop 1 Steam Flow Greater than Feed Flow.Caused by Operator Error During Performance of FNP-2-STP-33.1.Relay Replaced
page: https://kanterella.com/05000348/LER-2D1984-2D005-2C_-3Aon_840409-2Creactor_Tripped_Due_to_Low_Level_in_Steam_Generator_2A_in_Conjunction_W/Loop_1_Steam_Flow_Greater_than_Feed_Flow.Caused_by_Operator_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000348/LER-1984-005, :on 840409,reactor Tripped Due to Low Level in Steam Generator 2A in Conjunction W/Loop 1 Steam Flow Greater than Feed Flow.Caused by Operator Error During Performance of FNP-2-STP-33.1.Relay Replaced

05000336/LER-1995-004, :on 950131,TS Surveillance for Liquid Waste Radiation Monitor Was Missed Due to Personnel Error. Performed Surveillances to Satisfactory Completion on Following Day
type: Subject
page: https://kanterella.com/05000336/LER-2D1995-2D004-2C_-3Aon_950131-2CTS_Surveillance_for_Liquid_Waste_Radiation_Monitor_Was_Missed_Due_to_Personnel_Error._Performed_Surveillances_to_Satisfactory_Complet…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000336/LER-1995-004, :on 950131,TS Surveillance for Liquid Waste Radiation Monitor Was Missed Due to Personnel Error. Performed Surveillances to Satisfactory Completion on Following Day

LER-1984-003-02, :on 840120,high Radiation Alarm Actuated, Causing Containment Ventilation Isolation to Occur.Caused by Electromagnetic Interference.High Radiation Alarm Reset & Monitor Returned to Svc
type: Subject
label: 05000327/LER-1984-003-02, :on 840120,high Radiation Alarm Actuated, Causing Containment Ventilation Isolation to Occur.Caused by Electromagnetic Interference.High Radiation Alarm Reset & Monitor Returned to Svc
page: https://kanterella.com/05000327/LER-2D1984-2D003-2D02-2C_-3Aon_840120-2Chigh_Radiation_Alarm_Actuated-2C_Causing_Containment_Ventilation_Isolation_to_Occur.Caused_by_Electromagnetic_Interference.High_…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000327/LER-1984-003-02, :on 840120,high Radiation Alarm Actuated, Causing Containment Ventilation Isolation to Occur.Caused by Electromagnetic Interference.High Radiation Alarm Reset & Monitor Returned to Svc

05000416/LER-1984-012, :on 840314,discovered That Verification of Closed Fire Doors Once Every 24 H Did Not Include Elevator Doors.Caused Not Stated.Surveillance Revised to Include Elevator Doors
type: Subject
page: https://kanterella.com/05000416/LER-2D1984-2D012-2C_-3Aon_840314-2Cdiscovered_That_Verification_of_Closed_Fire_Doors_Once_Every_24_H_Did_Not_Include_Elevator_Doors.Caused_Not_Stated.Surveillance_Revis…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000416/LER-1984-012, :on 840314,discovered That Verification of Closed Fire Doors Once Every 24 H Did Not Include Elevator Doors.Caused Not Stated.Surveillance Revised to Include Elevator Doors

05000458/LER-1995-005-02, :on 950627,HPCS Pump Breaker Tripped During Surveillance Testing.Cause of Failure Not Identified.Breaker Internals,Prop Springs & Closing Latch Spring Inspected.W/
type: Subject
page: https://kanterella.com/05000458/LER-2D1995-2D005-2D02-2C_-3Aon_950627-2CHPCS_Pump_Breaker_Tripped_During_Surveillance_Testing.Cause_of_Failure_Not_Identified.Breaker_Internals-2CProp_Springs_-26_Closi…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000458/LER-1995-005-02, :on 950627,HPCS Pump Breaker Tripped During Surveillance Testing.Cause of Failure Not Identified.Breaker Internals,Prop Springs & Closing Latch Spring Inspected.W/

05000285/LER-1993-014, :on 930926,PORV PCV-102-1 Inadvertently Opened During Test.Caused by Improper Valve Maint During 1984 Mod. C/A:Pcv Refurbished & Tested
type: Subject
page: https://kanterella.com/05000285/LER-2D1993-2D014-2C_-3Aon_930926-2CPORV_PCV-2D102-2D1_Inadvertently_Opened_During_Test.Caused_by_Improper_Valve_Maint_During_1984_Mod._C/A-3APcv_Refurbished_-26_Tested
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000285/LER-1993-014, :on 930926,PORV PCV-102-1 Inadvertently Opened During Test.Caused by Improper Valve Maint During 1984 Mod. C/A:Pcv Refurbished & Tested

LER-1988-005-01, :on 880219,startup Feedwater Pump Started, Causing Current Surge That Actuated Overcurrent Relay for Emergency Response Facility Transformer 3B.Caused by Faulty Transformer Relay.Relay Replaced
type: Subject
label: 05000412/LER-1988-005-01, :on 880219,startup Feedwater Pump Started, Causing Current Surge That Actuated Overcurrent Relay for Emergency Response Facility Transformer 3B.Caused by Faulty Transformer Relay.Relay Replaced
page: https://kanterella.com/05000412/LER-2D1988-2D005-2D01-2C_-3Aon_880219-2Cstartup_Feedwater_Pump_Started-2C_Causing_Current_Surge_That_Actuated_Overcurrent_Relay_for_Emergency_Response_Facility_Transfor…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000412/LER-1988-005-01, :on 880219,startup Feedwater Pump Started, Causing Current Surge That Actuated Overcurrent Relay for Emergency Response Facility Transformer 3B.Caused by Faulty Transformer Relay.Relay Replaced

LER-1993-013, :on 930414,identified Addl Missed Surveillance to Functionally Test Entire Circuitry for Manual Phase a Isolation Switches.Caused by Personnel Error.Periodic Test Procedures Will Preclude Recurrence
type: Subject
label: 05000338/LER-1993-013, :on 930414,identified Addl Missed Surveillance to Functionally Test Entire Circuitry for Manual Phase a Isolation Switches.Caused by Personnel Error.Periodic Test Procedures Will Preclude Recurrence
page: https://kanterella.com/05000338/LER-2D1993-2D013-2C_-3Aon_930414-2Cidentified_Addl_Missed_Surveillance_to_Functionally_Test_Entire_Circuitry_for_Manual_Phase_a_Isolation_Switches.Caused_by_Personnel_E…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000338/LER-1993-013, :on 930414,identified Addl Missed Surveillance to Functionally Test Entire Circuitry for Manual Phase a Isolation Switches.Caused by Personnel Error.Periodic Test Procedures Will Preclude Recurrence

ML20006D712
type: Subject
page: https://kanterella.com/ML20006D712
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20006D712

ML20006D692
type: Subject
page: https://kanterella.com/ML20006D692
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20006D692

ML20006D705
type: Subject
page: https://kanterella.com/ML20006D705
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20006D705

03L-0:on 810518,during Plant Tour by Operations Personnel,Low Pressure Leg of Isolation Condenser Level Indication Found Valved Out.Probably Caused by Valve Not Being Reopened After Sampling.Valve Opened
type: Subject
label: 05000237/LER-1981-025-03, /03L-0:on 810518,during Plant Tour by Operations Personnel,Low Pressure Leg of Isolation Condenser Level Indication Found Valved Out.Probably Caused by Valve Not Being Reopened After Sampling.Valve Opened
page: https://kanterella.com/05000237/LER-2D1981-2D025-2D03-2C_/03L-2D0-3Aon_810518-2Cduring_Plant_Tour_by_Operations_Personnel-2CLow_Pressure_Leg_of_Isolation_Condenser_Level_Indication_Found_Valved_Out.Pr…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000237/LER-1981-025-03, /03L-0:on 810518,during Plant Tour by Operations Personnel,Low Pressure Leg of Isolation Condenser Level Indication Found Valved Out.Probably Caused by Valve Not Being Reopened After Sampling.Valve Opened

ML20006D903
type: Subject
page: https://kanterella.com/ML20006D903
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20006D903

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 308
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

ML20214P296
type: Subject
page: https://kanterella.com/ML20214P296
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20214P296

LER-1986-005, :on 860402,during Shutdown for Refueling,Full Scram Experienced.Caused by Loss of Power to Reactor Protection Sys Bus II Due to Deenergization of Brown Boveri ITE-27 Relay.Relay Repaired or Replaced
type: Subject
label: 05000220/LER-1986-005, :on 860402,during Shutdown for Refueling,Full Scram Experienced.Caused by Loss of Power to Reactor Protection Sys Bus II Due to Deenergization of Brown Boveri ITE-27 Relay.Relay Repaired or Replaced
page: https://kanterella.com/05000220/LER-2D1986-2D005-2C_-3Aon_860402-2Cduring_Shutdown_for_Refueling-2CFull_Scram_Experienced.Caused_by_Loss_of_Power_to_Reactor_Protection_Sys_Bus_II_Due_to_Deenergization…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000220/LER-1986-005, :on 860402,during Shutdown for Refueling,Full Scram Experienced.Caused by Loss of Power to Reactor Protection Sys Bus II Due to Deenergization of Brown Boveri ITE-27 Relay.Relay Repaired or Replaced

05000387/LER-1984-042, :on 840926,significant Operating Occurrence Rept Written,Detailing Occurrences Between 831223-840329 When Chemistry Samples Not Taken within Specified Time Limits
type: Subject
page: https://kanterella.com/05000387/LER-2D1984-2D042-2C_-3Aon_840926-2Csignificant_Operating_Occurrence_Rept_Written-2CDetailing_Occurrences_Between_831223-2D840329_When_Chemistry_Samples_Not_Taken_within…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000387/LER-1984-042, :on 840926,significant Operating Occurrence Rept Written,Detailing Occurrences Between 831223-840329 When Chemistry Samples Not Taken within Specified Time Limits

ML20099K298
type: Subject
page: https://kanterella.com/ML20099K298
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20099K298

05000370/LER-1984-009, :on 840319,reactor Trip Initiated by Steam Generator a low-low Level.Caused by Sys Fluctuations After Loop Power Supply Card Failed.Nlp Card Replaced & Loop Returned to Svc
type: Subject
page: https://kanterella.com/05000370/LER-2D1984-2D009-2C_-3Aon_840319-2Creactor_Trip_Initiated_by_Steam_Generator_a_low-2Dlow_Level.Caused_by_Sys_Fluctuations_After_Loop_Power_Supply_Card_Failed.Nlp_Card_R…
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: 05000370/LER-1984-009, :on 840319,reactor Trip Initiated by Steam Generator a low-low Level.Caused by Sys Fluctuations After Loop Power Supply Card Failed.Nlp Card Replaced & Loop Returned to Svc

ML20081D116
type: Subject
page: https://kanterella.com/ML20081D116
wiki namespace: 0
wiki page content language: en
NRC form: NRC Form 308
wiki page sort key: ML20081D116

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