0l-2Dl0
type: Ontology
creation date: 2025-12-05T17:34:55-05:00
imports: http://semantic-mediawiki.org/swivt/1.0

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ML19326B287
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ML19308D435
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ML19308D325
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ML19308D260
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ML19308D093
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ML19343C219
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ML20063A068
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ML20058L045
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ML20058K751
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ML20058K707
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ML20058K704
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ML20058K611
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01T:on 750803,leaking Fitting on Overhead Gas Compressor B Resulted in Unplanned Release of Radioctive Matl from Site.Caused by Loose Fitting.Leaking Fitting Repaired
type: Subject
label: 05000280/LER-1975-015, Updated LER 75-15/01T:on 750803,leaking Fitting on Overhead Gas Compressor B Resulted in Unplanned Release of Radioctive Matl from Site.Caused by Loose Fitting.Leaking Fitting Repaired
page: https://kanterella.com/05000280/LER-2D1975-2D015-2C_Updated_LER_75-2D15/01T-3Aon_750803-2Cleaking_Fitting_on_Overhead_Gas_Compressor_B_Resulted_in_Unplanned_Release_of_Radioctive_Matl_from_Site.Caused…
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wiki page sort key: 05000280/LER-1975-015, Updated LER 75-15/01T:on 750803,leaking Fitting on Overhead Gas Compressor B Resulted in Unplanned Release of Radioctive Matl from Site.Caused by Loose Fitting.Leaking Fitting Repaired

03L:on 761006,leakage of Water Observed from Recirculation Spray HX a Piping.Caused by Cracking in Heat Affected Zones of Several Welds.Listed Piping Will Be Replaced
type: Subject
label: 05000281/LER-1976-015, Updated LER 76-15/03L:on 761006,leakage of Water Observed from Recirculation Spray HX a Piping.Caused by Cracking in Heat Affected Zones of Several Welds.Listed Piping Will Be Replaced
page: https://kanterella.com/05000281/LER-2D1976-2D015-2C_Updated_LER_76-2D15/03L-3Aon_761006-2Cleakage_of_Water_Observed_from_Recirculation_Spray_HX_a_Piping.Caused_by_Cracking_in_Heat_Affected_Zones_of_Se…
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wiki page sort key: 05000281/LER-1976-015, Updated LER 76-15/03L:on 761006,leakage of Water Observed from Recirculation Spray HX a Piping.Caused by Cracking in Heat Affected Zones of Several Welds.Listed Piping Will Be Replaced

ML20085F479
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ML20085E608
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ML20085E598
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ML20085E561
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ML20085E543
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ML20085E501
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ML20085E437
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ML20084U343
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ML20084U291
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ML20084T937
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ML20084T932
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ML20084T928
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ML20084S564
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page: https://kanterella.com/ML20084S564
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ML20084S551
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page: https://kanterella.com/ML20084S551
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ML20084S542
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page: https://kanterella.com/ML20084S542
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ML20084S476
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page: https://kanterella.com/ML20084S476
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ML20084S355
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Torus Nitrogen Purge Line 1604-18.Addl Mods, Including Temp Controlled Isolation Valve Installation, Delayed Until Proposal Review
type: Subject
label: 05000237/LER-1950-237, Updated LER 50-237/75-048:on 751007,through-wall Crack Found in Drywell/Torus Nitrogen Purge Line 1604-18.Addl Mods, Including Temp Controlled Isolation Valve Installation, Delayed Until Proposal Review
page: https://kanterella.com/05000237/LER-2D1950-2D237-2C_Updated_LER_50-2D237/75-2D048-3Aon_751007-2Cthrough-2Dwall_Crack_Found_in_Drywell/Torus_Nitrogen_Purge_Line_1604-2D18.Addl_Mods-2C_Including_Temp_Co…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000237/LER-1950-237, Updated LER 50-237/75-048:on 751007,through-wall Crack Found in Drywell/Torus Nitrogen Purge Line 1604-18.Addl Mods, Including Temp Controlled Isolation Valve Installation, Delayed Until Proposal Review

ML20148K395
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page: https://kanterella.com/ML20148K395
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ML20148K390
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page: https://kanterella.com/ML20148K390
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ML20127L289
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page: https://kanterella.com/ML20127L289
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ML20127H533
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page: https://kanterella.com/ML20127H533
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ML20127B740
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page: https://kanterella.com/ML20127B740
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half-lives Greater than 8 Days, Exceeding Tech Spec Limits by 24-
type: Subject
label: 05000000/LER-1975-005, :on 750127,analysis of Reactor Bldg Vent & Main Stack Charcoal & Particulate Filters Revealed Release Rates of Halogens & Particulates w/half-lives Greater than 8 Days, Exceeding Tech Spec Limits by 24%
page: https://kanterella.com/05000000/LER-2D1975-2D005-2C_-3Aon_750127-2Canalysis_of_Reactor_Bldg_Vent_-26_Main_Stack_Charcoal_-26_Particulate_Filters_Revealed_Release_Rates_of_Halogens_-26_Particulates_w/h…
wiki namespace: 0
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SSC: 0l-l0
wiki page sort key: 05000000/LER-1975-005, :on 750127,analysis of Reactor Bldg Vent & Main Stack Charcoal & Particulate Filters Revealed Release Rates of Halogens & Particulates w/half-lives Greater than 8 Days, Exceeding Tech Spec Limits by 24%

01T-0:on 830408,HPCI Woodward Governor Egr Hydraulic Actuator Coil Tailed.Caused by Lead Wire Insulation Degradation Allowing Ground Fault to Egr Housing. Egr Replaced.Hpci Satisfactorily Tested
type: Subject
label: 05000263/LER-1983-006-01, /01T-0:on 830408,HPCI Woodward Governor Egr Hydraulic Actuator Coil Tailed.Caused by Lead Wire Insulation Degradation Allowing Ground Fault to Egr Housing. Egr Replaced.Hpci Satisfactorily Tested
page: https://kanterella.com/05000263/LER-2D1983-2D006-2D01-2C_/01T-2D0-3Aon_830408-2CHPCI_Woodward_Governor_Egr_Hydraulic_Actuator_Coil_Tailed.Caused_by_Lead_Wire_Insulation_Degradation_Allowing_Ground_Fau…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1983-006-01, /01T-0:on 830408,HPCI Woodward Governor Egr Hydraulic Actuator Coil Tailed.Caused by Lead Wire Insulation Degradation Allowing Ground Fault to Egr Housing. Egr Replaced.Hpci Satisfactorily Tested

03L-0 on 780914:on a Phase a isolation,1FCV-PR24B & 1FCV-WD17A Failed to Close Placing Containment Isolation Sys in Degraded Mode.Caused by Asco 8320 Solenoid Valve Failing to Close Due to Oil in Instru Air
type: Subject
label: 05000295/LER-1978-094-03, /03L-0 on 780914:on a Phase a isolation,1FCV-PR24B & 1FCV-WD17A Failed to Close Placing Containment Isolation Sys in Degraded Mode.Caused by Asco 8320 Solenoid Valve Failing to Close Due to Oil in Instru Air
page: https://kanterella.com/05000295/LER-2D1978-2D094-2D03-2C_/03L-2D0_on_780914-3Aon_a_Phase_a_isolation-2C1FCV-2DPR24B_-26_1FCV-2DWD17A_Failed_to_Close_Placing_Containment_Isolation_Sys_in_Degraded_Mode.…
wiki namespace: 0
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SSC: 0l-l0
wiki page sort key: 05000295/LER-1978-094-03, /03L-0 on 780914:on a Phase a isolation,1FCV-PR24B & 1FCV-WD17A Failed to Close Placing Containment Isolation Sys in Degraded Mode.Caused by Asco 8320 Solenoid Valve Failing to Close Due to Oil in Instru Air

05000270/LER-1983-002-03, Computer Became Inoperable Causing Loss of Both RCS Subcooling Monitors. Caused by Deficiency in Installation Procedures.Computer Repaired & Restarted
type: Subject
page: https://kanterella.com/05000270/LER-2D1983-2D002-2D03-2C_Computer_Became_Inoperable_Causing_Loss_of_Both_RCS_Subcooling_Monitors._Caused_by_Deficiency_in_Installation_Procedures.Computer_Repaired_-26_…
wiki namespace: 0
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SSC: 0l-l0
wiki page sort key: 05000270/LER-1983-002-03, Computer Became Inoperable Causing Loss of Both RCS Subcooling Monitors. Caused by Deficiency in Installation Procedures.Computer Repaired & Restarted

LER-1977-012, :on 770620,GE Observed That Pump Trip Delay Time Assumed in Original Cycle 5 Transient Analysis Inappropriate.License Amend Request Will Be Submitted to Increase MCPR Transient Limits
type: Subject
label: 05000263/LER-1977-012, :on 770620,GE Observed That Pump Trip Delay Time Assumed in Original Cycle 5 Transient Analysis Inappropriate.License Amend Request Will Be Submitted to Increase MCPR Transient Limits
page: https://kanterella.com/05000263/LER-2D1977-2D012-2C_-3Aon_770620-2CGE_Observed_That_Pump_Trip_Delay_Time_Assumed_in_Original_Cycle_5_Transient_Analysis_Inappropriate.License_Amend_Request_Will_Be_Subm…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1977-012, :on 770620,GE Observed That Pump Trip Delay Time Assumed in Original Cycle 5 Transient Analysis Inappropriate.License Amend Request Will Be Submitted to Increase MCPR Transient Limits

LER-1977-009, :on 770531,main & Limit Switch Gear Train Grease Had Deteriorated Due to High Ambient Temp.Gear Train Cleaned & Repacked & Lower Temp Presently Maintained Due to Recent Ventilation Mod
type: Subject
label: 05000263/LER-1977-009, :on 770531,main & Limit Switch Gear Train Grease Had Deteriorated Due to High Ambient Temp.Gear Train Cleaned & Repacked & Lower Temp Presently Maintained Due to Recent Ventilation Mod
page: https://kanterella.com/05000263/LER-2D1977-2D009-2C_-3Aon_770531-2Cmain_-26_Limit_Switch_Gear_Train_Grease_Had_Deteriorated_Due_to_High_Ambient_Temp.Gear_Train_Cleaned_-26_Repacked_-26_Lower_Temp_Pres…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1977-009, :on 770531,main & Limit Switch Gear Train Grease Had Deteriorated Due to High Ambient Temp.Gear Train Cleaned & Repacked & Lower Temp Presently Maintained Due to Recent Ventilation Mod

03L:on 760130,channel 2 Overtemp delta-T Reactor Trip Setpoint Exceeded Tech Spec Limit by One Degree.Caused by Failure of Two Filter Capacitors in Signal Summator. Capacitors Replaced
type: Subject
label: 05000251/LER-1976-001-03, /03L:on 760130,channel 2 Overtemp delta-T Reactor Trip Setpoint Exceeded Tech Spec Limit by One Degree.Caused by Failure of Two Filter Capacitors in Signal Summator. Capacitors Replaced
page: https://kanterella.com/05000251/LER-2D1976-2D001-2D03-2C_/03L-3Aon_760130-2Cchannel_2_Overtemp_delta-2DT_Reactor_Trip_Setpoint_Exceeded_Tech_Spec_Limit_by_One_Degree.Caused_by_Failure_of_Two_Filter_Ca…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000251/LER-1976-001-03, /03L:on 760130,channel 2 Overtemp delta-T Reactor Trip Setpoint Exceeded Tech Spec Limit by One Degree.Caused by Failure of Two Filter Capacitors in Signal Summator. Capacitors Replaced

03L:on 761125,trip Setpoint of Steam Flow Comparator FC-3-484 Found to Be Nonconservative.Caused by Failure of Two Filter Capacitors on Printed Circuit Board. Capacitors to Be Replaced
type: Subject
label: 05000250/LER-1976-010-03, /03L:on 761125,trip Setpoint of Steam Flow Comparator FC-3-484 Found to Be Nonconservative.Caused by Failure of Two Filter Capacitors on Printed Circuit Board. Capacitors to Be Replaced
page: https://kanterella.com/05000250/LER-2D1976-2D010-2D03-2C_/03L-3Aon_761125-2Ctrip_Setpoint_of_Steam_Flow_Comparator_FC-2D3-2D484_Found_to_Be_Nonconservative.Caused_by_Failure_of_Two_Filter_Capacitors_o…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000250/LER-1976-010-03, /03L:on 761125,trip Setpoint of Steam Flow Comparator FC-3-484 Found to Be Nonconservative.Caused by Failure of Two Filter Capacitors on Printed Circuit Board. Capacitors to Be Replaced

01T:on 760214,water Level in Refueling Water Storage Tank 1- Lower than Tech Spec Requirement.Caused by Poor Calibr Ability of Wide Range Indicator Gage.Narrow Range Gage Will Be Installed as Backup
type: Subject
label: 05000251/LER-1976-002-01, /01T:on 760214,water Level in Refueling Water Storage Tank 1% Lower than Tech Spec Requirement.Caused by Poor Calibr Ability of Wide Range Indicator Gage.Narrow Range Gage Will Be Installed as Backup
page: https://kanterella.com/05000251/LER-2D1976-2D002-2D01-2C_/01T-3Aon_760214-2Cwater_Level_in_Refueling_Water_Storage_Tank_1-_Lower_than_Tech_Spec_Requirement.Caused_by_Poor_Calibr_Ability_of_Wide_Range_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000251/LER-1976-002-01, /01T:on 760214,water Level in Refueling Water Storage Tank 1% Lower than Tech Spec Requirement.Caused by Poor Calibr Ability of Wide Range Indicator Gage.Narrow Range Gage Will Be Installed as Backup

01T:on 760909,closing Springs in Diesel Generator 3A Circuit Breaker Not in Charged Position.Caused by Worn Nylon Bushing Between Closing Spring Drive Motor & Linkage to Ratchet Wheel
type: Subject
label: 05000250/LER-1976-006-01, /01T:on 760909,closing Springs in Diesel Generator 3A Circuit Breaker Not in Charged Position.Caused by Worn Nylon Bushing Between Closing Spring Drive Motor & Linkage to Ratchet Wheel
page: https://kanterella.com/05000250/LER-2D1976-2D006-2D01-2C_/01T-3Aon_760909-2Cclosing_Springs_in_Diesel_Generator_3A_Circuit_Breaker_Not_in_Charged_Position.Caused_by_Worn_Nylon_Bushing_Between_Closing_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000250/LER-1976-006-01, /01T:on 760909,closing Springs in Diesel Generator 3A Circuit Breaker Not in Charged Position.Caused by Worn Nylon Bushing Between Closing Spring Drive Motor & Linkage to Ratchet Wheel

05000251/LER-1976-007-01, /01T:on 761002,diesel Generator a Engine Cooling Water Tank Level Found Low.Caused by Sample Valve Not Being Fully Closed After 761001 Water Sample.Valve Closed & Water Added
type: Subject
page: https://kanterella.com/05000251/LER-2D1976-2D007-2D01-2C_/01T-3Aon_761002-2Cdiesel_Generator_a_Engine_Cooling_Water_Tank_Level_Found_Low.Caused_by_Sample_Valve_Not_Being_Fully_Closed_After_761001_Wate…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000251/LER-1976-007-01, /01T:on 761002,diesel Generator a Engine Cooling Water Tank Level Found Low.Caused by Sample Valve Not Being Fully Closed After 761001 Water Sample.Valve Closed & Water Added

05000250/LER-1976-008-01, /01T:on 761006,boron Concentration of Injection Tank Below 20,000 Ppm Limit.Cause Undetermined.Shutdown Initiated
type: Subject
page: https://kanterella.com/05000250/LER-2D1976-2D008-2D01-2C_/01T-3Aon_761006-2Cboron_Concentration_of_Injection_Tank_Below_20-2C000_Ppm_Limit.Cause_Undetermined.Shutdown_Initiated
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000250/LER-1976-008-01, /01T:on 761006,boron Concentration of Injection Tank Below 20,000 Ppm Limit.Cause Undetermined.Shutdown Initiated

05000306/LER-1977-011, :on 770406,cooling Tower Bus CT12 Lost.Caused by Personnel Error.Personnel Erroneously Reinstalled Relay on Bus Tie Breaker CT-BT112
type: Subject
page: https://kanterella.com/05000306/LER-2D1977-2D011-2C_-3Aon_770406-2Ccooling_Tower_Bus_CT12_Lost.Caused_by_Personnel_Error.Personnel_Erroneously_Reinstalled_Relay_on_Bus_Tie_Breaker_CT-2DBT112
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000306/LER-1977-011, :on 770406,cooling Tower Bus CT12 Lost.Caused by Personnel Error.Personnel Erroneously Reinstalled Relay on Bus Tie Breaker CT-BT112

05000220/LER-1975-033, :on 751121,source Range Monitor 13 Failed to Provide Adequate Signal to Monitor.Caused by Failed Capacitor in Preamplifier Unit
type: Subject
page: https://kanterella.com/05000220/LER-2D1975-2D033-2C_-3Aon_751121-2Csource_Range_Monitor_13_Failed_to_Provide_Adequate_Signal_to_Monitor.Caused_by_Failed_Capacitor_in_Preamplifier_Unit
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000220/LER-1975-033, :on 751121,source Range Monitor 13 Failed to Provide Adequate Signal to Monitor.Caused by Failed Capacitor in Preamplifier Unit

05000220/LER-1975-030, :on 751001,main Steam Line Temp Switch Found to Actuate High.Caused by Setpoint Drift.Instrument Recalibr
type: Subject
page: https://kanterella.com/05000220/LER-2D1975-2D030-2C_-3Aon_751001-2Cmain_Steam_Line_Temp_Switch_Found_to_Actuate_High.Caused_by_Setpoint_Drift.Instrument_Recalibr
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000220/LER-1975-030, :on 751001,main Steam Line Temp Switch Found to Actuate High.Caused by Setpoint Drift.Instrument Recalibr

05000220/LER-1976-017-01, :on 760428,fish Impingement on Traveling Screens Found in Excess of ETS Limits of 20,000 Per 24 H.Caused by Annual Migration
type: Subject
page: https://kanterella.com/05000220/LER-2D1976-2D017-2D01-2C_-3Aon_760428-2Cfish_Impingement_on_Traveling_Screens_Found_in_Excess_of_ETS_Limits_of_20-2C000_Per_24_H.Caused_by_Annual_Migration
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000220/LER-1976-017-01, :on 760428,fish Impingement on Traveling Screens Found in Excess of ETS Limits of 20,000 Per 24 H.Caused by Annual Migration

03L:on 760519,output 1 of Pressurizer Level Comparator LC-459A Tripped at 4.685 Volts Instead of 4.680 Volts.Caused by Setpoint Drift.Trip Setpoint Reset to Conservative Value
type: Subject
label: 05000250/LER-1976-003-03, /03L:on 760519,output 1 of Pressurizer Level Comparator LC-459A Tripped at 4.685 Volts Instead of 4.680 Volts.Caused by Setpoint Drift.Trip Setpoint Reset to Conservative Value
page: https://kanterella.com/05000250/LER-2D1976-2D003-2D03-2C_/03L-3Aon_760519-2Coutput_1_of_Pressurizer_Level_Comparator_LC-2D459A_Tripped_at_4.685_Volts_Instead_of_4.680_Volts.Caused_by_Setpoint_Drift.Tr…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000250/LER-1976-003-03, /03L:on 760519,output 1 of Pressurizer Level Comparator LC-459A Tripped at 4.685 Volts Instead of 4.680 Volts.Caused by Setpoint Drift.Trip Setpoint Reset to Conservative Value

05000220/LER-1975-024, :on 750911,average Power Range Monitor 14 Went Downscale.Caused by Loose Component in Power Supply.Problem Corrected
type: Subject
page: https://kanterella.com/05000220/LER-2D1975-2D024-2C_-3Aon_750911-2Caverage_Power_Range_Monitor_14_Went_Downscale.Caused_by_Loose_Component_in_Power_Supply.Problem_Corrected
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000220/LER-1975-024, :on 750911,average Power Range Monitor 14 Went Downscale.Caused by Loose Component in Power Supply.Problem Corrected

05000220/LER-1976-017, :on 760428,fish Impingement Upon Traveling Screens Found in Excess of ETS Limits of 20,000 Per 24 H.Caused by Annual Migration
type: Subject
page: https://kanterella.com/05000220/LER-2D1976-2D017-2C_-3Aon_760428-2Cfish_Impingement_Upon_Traveling_Screens_Found_in_Excess_of_ETS_Limits_of_20-2C000_Per_24_H.Caused_by_Annual_Migration
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000220/LER-1976-017, :on 760428,fish Impingement Upon Traveling Screens Found in Excess of ETS Limits of 20,000 Per 24 H.Caused by Annual Migration

05000285/LER-1976-005-03, /03L:on 760315,channel 383 Left Pressure Switch A/LC-383-1 Found Drifted Out of Spec.Cause Not Stated. Switch Recalibr & Will Be Checked Monthly for Proper Operation
type: Subject
page: https://kanterella.com/05000285/LER-2D1976-2D005-2D03-2C_/03L-3Aon_760315-2Cchannel_383_Left_Pressure_Switch_A/LC-2D383-2D1_Found_Drifted_Out_of_Spec.Cause_Not_Stated._Switch_Recalibr_-26_Will_Be_Chec…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000285/LER-1976-005-03, /03L:on 760315,channel 383 Left Pressure Switch A/LC-383-1 Found Drifted Out of Spec.Cause Not Stated. Switch Recalibr & Will Be Checked Monthly for Proper Operation

03L:on 760629,timer Relays for SI-3A,AC-3B & Si-3B Failed to Time Out at Set Times.Caused by Mechanical Binding of Time Relay Model HA-41A6-L-08.Timer Relays Tested Twice Weekly Until Replacements Received
type: Subject
label: 05000285/LER-1976-021-03, /03L:on 760629,timer Relays for SI-3A,AC-3B & Si-3B Failed to Time Out at Set Times.Caused by Mechanical Binding of Time Relay Model HA-41A6-L-08.Timer Relays Tested Twice Weekly Until Replacements Received
page: https://kanterella.com/05000285/LER-2D1976-2D021-2D03-2C_/03L-3Aon_760629-2Ctimer_Relays_for_SI-2D3A-2CAC-2D3B_-26_Si-2D3B_Failed_to_Time_Out_at_Set_Times.Caused_by_Mechanical_Binding_of_Time_Relay_Mo…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000285/LER-1976-021-03, /03L:on 760629,timer Relays for SI-3A,AC-3B & Si-3B Failed to Time Out at Set Times.Caused by Mechanical Binding of Time Relay Model HA-41A6-L-08.Timer Relays Tested Twice Weekly Until Replacements Received

480 Volt Transformer T1B-3B & 480 Volt Bus 1B3B.Caused by Internally Faulted Transformer
type: Subject
label: 05000285/LER-1976-025-03, /03L:on 760815,4,160 Volt Breaker T1B-3B Tripped on Instantaneous Overcurrent Relaying,Deenergizing 4,160/480 Volt Transformer T1B-3B & 480 Volt Bus 1B3B.Caused by Internally Faulted Transformer
page: https://kanterella.com/05000285/LER-2D1976-2D025-2D03-2C_/03L-3Aon_760815-2C4-2C160_Volt_Breaker_T1B-2D3B_Tripped_on_Instantaneous_Overcurrent_Relaying-2CDeenergizing_4-2C160/480_Volt_Transformer_T1B-…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000285/LER-1976-025-03, /03L:on 760815,4,160 Volt Breaker T1B-3B Tripped on Instantaneous Overcurrent Relaying,Deenergizing 4,160/480 Volt Transformer T1B-3B & 480 Volt Bus 1B3B.Caused by Internally Faulted Transformer

01T:on 760901,discovered High Alarm Setpoint on Steam Generator Blowdown Monitors RM-054A & RM-054B Set at 600,000 Counts Per Minute.Caused by Use of Unofficial Copy of Process Monitor Setpoints
type: Subject
label: 05000285/LER-1976-030-01, /01T:on 760901,discovered High Alarm Setpoint on Steam Generator Blowdown Monitors RM-054A & RM-054B Set at 600,000 Counts Per Minute.Caused by Use of Unofficial Copy of Process Monitor Setpoints
page: https://kanterella.com/05000285/LER-2D1976-2D030-2D01-2C_/01T-3Aon_760901-2Cdiscovered_High_Alarm_Setpoint_on_Steam_Generator_Blowdown_Monitors_RM-2D054A_-26_RM-2D054B_Set_at_600-2C000_Counts_Per_Minu…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000285/LER-1976-030-01, /01T:on 760901,discovered High Alarm Setpoint on Steam Generator Blowdown Monitors RM-054A & RM-054B Set at 600,000 Counts Per Minute.Caused by Use of Unofficial Copy of Process Monitor Setpoints

03L:on 760326,channel B Axial Power Distribution Positive & Negative Limits Read 12.1 & -5.4.Caused by adder-subtractor Module 19-301A Going Into Oscillation & Saturated.Module Replaced
type: Subject
label: 05000285/LER-1976-006-03, /03L:on 760326,channel B Axial Power Distribution Positive & Negative Limits Read 12.1 & -5.4.Caused by adder-subtractor Module 19-301A Going Into Oscillation & Saturated.Module Replaced
page: https://kanterella.com/05000285/LER-2D1976-2D006-2D03-2C_/03L-3Aon_760326-2Cchannel_B_Axial_Power_Distribution_Positive_-26_Negative_Limits_Read_12.1_-26_-2D5.4.Caused_by_adder-2Dsubtractor_Module_19-…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000285/LER-1976-006-03, /03L:on 760326,channel B Axial Power Distribution Positive & Negative Limits Read 12.1 & -5.4.Caused by adder-subtractor Module 19-301A Going Into Oscillation & Saturated.Module Replaced

03L:on 760815,dc Bus 2 Ground Alarm Annunciated in Control Room & Smoke Observed Coming from Diesel Generator 2 Governor Motor Encl.Caused by RPM Governor Motor Armature Internally Faulted
type: Subject
label: 05000285/LER-1976-026-03, /03L:on 760815,dc Bus 2 Ground Alarm Annunciated in Control Room & Smoke Observed Coming from Diesel Generator 2 Governor Motor Encl.Caused by RPM Governor Motor Armature Internally Faulted
page: https://kanterella.com/05000285/LER-2D1976-2D026-2D03-2C_/03L-3Aon_760815-2Cdc_Bus_2_Ground_Alarm_Annunciated_in_Control_Room_-26_Smoke_Observed_Coming_from_Diesel_Generator_2_Governor_Motor_Encl.Caus…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000285/LER-1976-026-03, /03L:on 760815,dc Bus 2 Ground Alarm Annunciated in Control Room & Smoke Observed Coming from Diesel Generator 2 Governor Motor Encl.Caused by RPM Governor Motor Armature Internally Faulted

03L:on 760916,normal Boric Acid Makeup to Vol Control Tank Could Not Be Accomplished Due to Plugging of CVCS Line 1 inch-CH-56-152.Caused by Routine Use of Line. Blank Flange Installed to Clear Lines
type: Subject
label: 05000280/LER-1976-013-03, /03L:on 760916,normal Boric Acid Makeup to Vol Control Tank Could Not Be Accomplished Due to Plugging of CVCS Line 1 inch-CH-56-152.Caused by Routine Use of Line. Blank Flange Installed to Clear Lines
page: https://kanterella.com/05000280/LER-2D1976-2D013-2D03-2C_/03L-3Aon_760916-2Cnormal_Boric_Acid_Makeup_to_Vol_Control_Tank_Could_Not_Be_Accomplished_Due_to_Plugging_of_CVCS_Line_1_inch-2DCH-2D56-2D152.C…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1976-013-03, /03L:on 760916,normal Boric Acid Makeup to Vol Control Tank Could Not Be Accomplished Due to Plugging of CVCS Line 1 inch-CH-56-152.Caused by Routine Use of Line. Blank Flange Installed to Clear Lines

03L:on 761006,leakage of Water Observed from Recirculation Spray HX a Piping.Caused by Cloride Stress Corrosion of Type 304 Stainless Steel Piping.Repairs Will Be Made Following Investigation
type: Subject
label: 05000281/LER-1976-015-03, /03L:on 761006,leakage of Water Observed from Recirculation Spray HX a Piping.Caused by Cloride Stress Corrosion of Type 304 Stainless Steel Piping.Repairs Will Be Made Following Investigation
page: https://kanterella.com/05000281/LER-2D1976-2D015-2D03-2C_/03L-3Aon_761006-2Cleakage_of_Water_Observed_from_Recirculation_Spray_HX_a_Piping.Caused_by_Cloride_Stress_Corrosion_of_Type_304_Stainless_Stee…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-015-03, /03L:on 761006,leakage of Water Observed from Recirculation Spray HX a Piping.Caused by Cloride Stress Corrosion of Type 304 Stainless Steel Piping.Repairs Will Be Made Following Investigation

05000281/LER-1975-015-01, /01T:on 750807,boron Injection Tank Recirculation Valves TV-2884 A,B & C Found Closed.Caused by Air Supply Valve 2-IA-451 Partially Throttled Due to Vibration
type: Subject
page: https://kanterella.com/05000281/LER-2D1975-2D015-2D01-2C_/01T-3Aon_750807-2Cboron_Injection_Tank_Recirculation_Valves_TV-2D2884_A-2CB_-26_C_Found_Closed.Caused_by_Air_Supply_Valve_2-2DIA-2D451_Partial…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1975-015-01, /01T:on 750807,boron Injection Tank Recirculation Valves TV-2884 A,B & C Found Closed.Caused by Air Supply Valve 2-IA-451 Partially Throttled Due to Vibration

05000281/LER-1976-009-99, /99T:on 760204,main Steam Line Trip Valve TV-MS-201A Failed to Closed When Operated from Control Room. Caused by Valve Disc Binding Against Valve Body.Disc Opening Adjusted
type: Subject
page: https://kanterella.com/05000281/LER-2D1976-2D009-2D99-2C_/99T-3Aon_760204-2Cmain_Steam_Line_Trip_Valve_TV-2DMS-2D201A_Failed_to_Closed_When_Operated_from_Control_Room._Caused_by_Valve_Disc_Binding_Aga…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-009-99, /99T:on 760204,main Steam Line Trip Valve TV-MS-201A Failed to Closed When Operated from Control Room. Caused by Valve Disc Binding Against Valve Body.Disc Opening Adjusted

01T:on 760511,small Cracks & Radial Growth Observed on Periphery of Seventh Tube Support Plate.Caused by Change from Phosphate to Avt Chemistry.Further Investigation in Progress
type: Subject
label: 05000281/LER-1976-002-01, /01T:on 760511,small Cracks & Radial Growth Observed on Periphery of Seventh Tube Support Plate.Caused by Change from Phosphate to Avt Chemistry.Further Investigation in Progress
page: https://kanterella.com/05000281/LER-2D1976-2D002-2D01-2C_/01T-3Aon_760511-2Csmall_Cracks_-26_Radial_Growth_Observed_on_Periphery_of_Seventh_Tube_Support_Plate.Caused_by_Change_from_Phosphate_to_Avt_Ch…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-002-01, /01T:on 760511,small Cracks & Radial Growth Observed on Periphery of Seventh Tube Support Plate.Caused by Change from Phosphate to Avt Chemistry.Further Investigation in Progress

03L:on 760217,channel III Overtemp Setpoint Drifted 9- in Nonconservative Direction.Caused by Outputs of Summator TM-2-432 High Even Though Inputs Were Correct. Summator Replaced
type: Subject
label: 05000281/LER-1976-001-03, /03L:on 760217,channel III Overtemp Setpoint Drifted 9% in Nonconservative Direction.Caused by Outputs of Summator TM-2-432 High Even Though Inputs Were Correct. Summator Replaced
page: https://kanterella.com/05000281/LER-2D1976-2D001-2D03-2C_/03L-3Aon_760217-2Cchannel_III_Overtemp_Setpoint_Drifted_9-_in_Nonconservative_Direction.Caused_by_Outputs_of_Summator_TM-2D2-2D432_High_Even_T…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-001-03, /03L:on 760217,channel III Overtemp Setpoint Drifted 9% in Nonconservative Direction.Caused by Outputs of Summator TM-2-432 High Even Though Inputs Were Correct. Summator Replaced

03L:on 760412,condenser Outlet Valve MOV-CW-200A Would Not Operate.Caused by Water in Limit Switch Compartment & Motor.Motor & Limit Switch Repaired & Limit Switch Compartment water-proofed
type: Subject
label: 05000281/LER-1976-003-03, /03L:on 760412,condenser Outlet Valve MOV-CW-200A Would Not Operate.Caused by Water in Limit Switch Compartment & Motor.Motor & Limit Switch Repaired & Limit Switch Compartment water-proofed
page: https://kanterella.com/05000281/LER-2D1976-2D003-2D03-2C_/03L-3Aon_760412-2Ccondenser_Outlet_Valve_MOV-2DCW-2D200A_Would_Not_Operate.Caused_by_Water_in_Limit_Switch_Compartment_-26_Motor.Motor_-26_Lim…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-003-03, /03L:on 760412,condenser Outlet Valve MOV-CW-200A Would Not Operate.Caused by Water in Limit Switch Compartment & Motor.Motor & Limit Switch Repaired & Limit Switch Compartment water-proofed

03L:on 760614,condenser Outlet Valve MOV-CW-200B Would Not Operate Electrically.Caused by Broken Off Valve Operator Worm Shaft Tripper Cam.Tripper Cam Replaced & Valve Tested & Returned to Svc
type: Subject
label: 05000281/LER-1976-008-03, /03L:on 760614,condenser Outlet Valve MOV-CW-200B Would Not Operate Electrically.Caused by Broken Off Valve Operator Worm Shaft Tripper Cam.Tripper Cam Replaced & Valve Tested & Returned to Svc
page: https://kanterella.com/05000281/LER-2D1976-2D008-2D03-2C_/03L-3Aon_760614-2Ccondenser_Outlet_Valve_MOV-2DCW-2D200B_Would_Not_Operate_Electrically.Caused_by_Broken_Off_Valve_Operator_Worm_Shaft_Tripper…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-008-03, /03L:on 760614,condenser Outlet Valve MOV-CW-200B Would Not Operate Electrically.Caused by Broken Off Valve Operator Worm Shaft Tripper Cam.Tripper Cam Replaced & Valve Tested & Returned to Svc

05000280/LER-1976-005-01, /01T:on 760805,NSSS Vendor Informed of Error Discovered in LOCA ECCS Analysis.Reactor Vessel Upper Head Water Temp Should Be Assigned Value Similiar to Hot Leg Temp
type: Subject
page: https://kanterella.com/05000280/LER-2D1976-2D005-2D01-2C_/01T-3Aon_760805-2CNSSS_Vendor_Informed_of_Error_Discovered_in_LOCA_ECCS_Analysis.Reactor_Vessel_Upper_Head_Water_Temp_Should_Be_Assigned_Value…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1976-005-01, /01T:on 760805,NSSS Vendor Informed of Error Discovered in LOCA ECCS Analysis.Reactor Vessel Upper Head Water Temp Should Be Assigned Value Similiar to Hot Leg Temp

H Rampdown Initiated.Draphragm Failure Caused by Valve Overtightening When Shutting
type: Subject
label: 05000280/LER-1977-008-03, /03L:on 770220,when Recirculation Halted to Replace Leaking Diaphragm in Valves 1-CH-98,150 Mwe/H Rampdown Initiated.Draphragm Failure Caused by Valve Overtightening When Shutting
page: https://kanterella.com/05000280/LER-2D1977-2D008-2D03-2C_/03L-3Aon_770220-2Cwhen_Recirculation_Halted_to_Replace_Leaking_Diaphragm_in_Valves_1-2DCH-2D98-2C150_Mwe/H_Rampdown_Initiated.Draphragm_Failur…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1977-008-03, /03L:on 770220,when Recirculation Halted to Replace Leaking Diaphragm in Valves 1-CH-98,150 Mwe/H Rampdown Initiated.Draphragm Failure Caused by Valve Overtightening When Shutting

05000281/LER-1976-005-03, /03L:on 760427,overall Integrated Containment Leakage Rate Found Greater than Acceptable Criterion.Cause Under Investigation.Repairs Will Be Made Per Investigation Results
type: Subject
page: https://kanterella.com/05000281/LER-2D1976-2D005-2D03-2C_/03L-3Aon_760427-2Coverall_Integrated_Containment_Leakage_Rate_Found_Greater_than_Acceptable_Criterion.Cause_Under_Investigation.Repairs_Will_B…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-005-03, /03L:on 760427,overall Integrated Containment Leakage Rate Found Greater than Acceptable Criterion.Cause Under Investigation.Repairs Will Be Made Per Investigation Results

05000280/LER-1976-004-03, /03L:on 760416,during Start Test,Emergency Diesel Generator 1 Damaged Due to Flooded Piston Cylinder 17. Caused by Crack in Cylinder Head.Engine Repaired
type: Subject
page: https://kanterella.com/05000280/LER-2D1976-2D004-2D03-2C_/03L-3Aon_760416-2Cduring_Start_Test-2CEmergency_Diesel_Generator_1_Damaged_Due_to_Flooded_Piston_Cylinder_17._Caused_by_Crack_in_Cylinder_Head…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1976-004-03, /03L:on 760416,during Start Test,Emergency Diesel Generator 1 Damaged Due to Flooded Piston Cylinder 17. Caused by Crack in Cylinder Head.Engine Repaired

05000280/LER-1977-009-03, /03L:on 770219,chemical Addition Tank Discharge Valve MOV-CS-102A Position Indicating Lights Extinguished. Caused by Incorrectly Wired Switch.Maint Procedure Revised
type: Subject
page: https://kanterella.com/05000280/LER-2D1977-2D009-2D03-2C_/03L-3Aon_770219-2Cchemical_Addition_Tank_Discharge_Valve_MOV-2DCS-2D102A_Position_Indicating_Lights_Extinguished._Caused_by_Incorrectly_Wired_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1977-009-03, /03L:on 770219,chemical Addition Tank Discharge Valve MOV-CS-102A Position Indicating Lights Extinguished. Caused by Incorrectly Wired Switch.Maint Procedure Revised

03L:on 760615,valve Operator MOV-2862B Would Not Operate When Cycled by Console Control Switch.Caused by Actuation of Thermal Overloads in Breaker housing.Three- Point Adjustment Screws Loosened
type: Subject
label: 05000281/LER-1976-009-03, /03L:on 760615,valve Operator MOV-2862B Would Not Operate When Cycled by Console Control Switch.Caused by Actuation of Thermal Overloads in Breaker housing.Three- Point Adjustment Screws Loosened
page: https://kanterella.com/05000281/LER-2D1976-2D009-2D03-2C_/03L-3Aon_760615-2Cvalve_Operator_MOV-2D2862B_Would_Not_Operate_When_Cycled_by_Console_Control_Switch.Caused_by_Actuation_of_Thermal_Overloads_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-009-03, /03L:on 760615,valve Operator MOV-2862B Would Not Operate When Cycled by Console Control Switch.Caused by Actuation of Thermal Overloads in Breaker housing.Three- Point Adjustment Screws Loosened

01T:on 750412,valve FCV-GW-260 Failed to Shut as Required by Tech Specs.Caused by Westinghouse Model MG-6 Relay in Control Circuit for Valve Found Stuck in Operate Position.Relay Cleaned & Adjusted
type: Subject
label: 05000280/LER-1975-010-01, /01T:on 750412,valve FCV-GW-260 Failed to Shut as Required by Tech Specs.Caused by Westinghouse Model MG-6 Relay in Control Circuit for Valve Found Stuck in Operate Position.Relay Cleaned & Adjusted
page: https://kanterella.com/05000280/LER-2D1975-2D010-2D01-2C_/01T-3Aon_750412-2Cvalve_FCV-2DGW-2D260_Failed_to_Shut_as_Required_by_Tech_Specs.Caused_by_Westinghouse_Model_MG-2D6_Relay_in_Control_Circuit_f…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1975-010-01, /01T:on 750412,valve FCV-GW-260 Failed to Shut as Required by Tech Specs.Caused by Westinghouse Model MG-6 Relay in Control Circuit for Valve Found Stuck in Operate Position.Relay Cleaned & Adjusted

04T-0:on 831231,oyster Samples Collected During Dec 1983 from Camp Canoy Indicated Ag-110 Above ETS Limits. Caused by Natural Tendency of Oysters to Bioconcentrate Environ Silver
type: Subject
label: 05000317/LER-1983-077-04, /04T-0:on 831231,oyster Samples Collected During Dec 1983 from Camp Canoy Indicated Ag-110 Above ETS Limits. Caused by Natural Tendency of Oysters to Bioconcentrate Environ Silver
page: https://kanterella.com/05000317/LER-2D1983-2D077-2D04-2C_/04T-2D0-3Aon_831231-2Coyster_Samples_Collected_During_Dec_1983_from_Camp_Canoy_Indicated_Ag-2D110_Above_ETS_Limits._Caused_by_Natural_Tendency…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000317/LER-1983-077-04, /04T-0:on 831231,oyster Samples Collected During Dec 1983 from Camp Canoy Indicated Ag-110 Above ETS Limits. Caused by Natural Tendency of Oysters to Bioconcentrate Environ Silver

01T:on 760111,three Snubbers on Lines RV-71A, RV-71K & RV-71H Inoperable Due to Empty Reservoirs.Caused by Leaking fittings,O-rings & Gaskets.All Defective Parts Will Be Replaced
type: Subject
label: 05000278/LER-1976-005-01, /01T:on 760111,three Snubbers on Lines RV-71A, RV-71K & RV-71H Inoperable Due to Empty Reservoirs.Caused by Leaking fittings,O-rings & Gaskets.All Defective Parts Will Be Replaced
page: https://kanterella.com/05000278/LER-2D1976-2D005-2D01-2C_/01T-3Aon_760111-2Cthree_Snubbers_on_Lines_RV-2D71A-2C_RV-2D71K_-26_RV-2D71H_Inoperable_Due_to_Empty_Reservoirs.Caused_by_Leaking_fittings-2CO-…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000278/LER-1976-005-01, /01T:on 760111,three Snubbers on Lines RV-71A, RV-71K & RV-71H Inoperable Due to Empty Reservoirs.Caused by Leaking fittings,O-rings & Gaskets.All Defective Parts Will Be Replaced

05000278/LER-1976-053-01, /01T:on 760712,main Steam Relief Valve 71B Failed Open Causing Unit to Be Shut Down.Caused by Pilot Valve Seat Leakage.Relief Valve Replaced
type: Subject
page: https://kanterella.com/05000278/LER-2D1976-2D053-2D01-2C_/01T-3Aon_760712-2Cmain_Steam_Relief_Valve_71B_Failed_Open_Causing_Unit_to_Be_Shut_Down.Caused_by_Pilot_Valve_Seat_Leakage.Relief_Valve_Replace…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000278/LER-1976-053-01, /01T:on 760712,main Steam Relief Valve 71B Failed Open Causing Unit to Be Shut Down.Caused by Pilot Valve Seat Leakage.Relief Valve Replaced

1P:on 770114,high Pressure Svc Water,Emergency Svc Water & Emergency Cooling Water Pumps Did Not Meet FSAR Seismic Requirements.Caused by Change in Calculation Techniques.Higher Strength Bolts & Restraints Added
type: Subject
label: 05000277/LER-1977-005-01, /1P:on 770114,high Pressure Svc Water,Emergency Svc Water & Emergency Cooling Water Pumps Did Not Meet FSAR Seismic Requirements.Caused by Change in Calculation Techniques.Higher Strength Bolts & Restraints Added
page: https://kanterella.com/05000277/LER-2D1977-2D005-2D01-2C_/1P-3Aon_770114-2Chigh_Pressure_Svc_Water-2CEmergency_Svc_Water_-26_Emergency_Cooling_Water_Pumps_Did_Not_Meet_FSAR_Seismic_Requirements.Caused…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1977-005-01, /1P:on 770114,high Pressure Svc Water,Emergency Svc Water & Emergency Cooling Water Pumps Did Not Meet FSAR Seismic Requirements.Caused by Change in Calculation Techniques.Higher Strength Bolts & Restraints Added

03L:on 761101,control Room Radiation Sampling Sys Low Flow Alarm & Low Flow Isolation Signal Not Received from Flow Switches FS-0760 a & B.Caused by Wiring Error.Wiring Error Corrected,Alarm Tested Successfully & Test Rewri
type: Subject
label: 05000277/LER-1976-074-03, /03L:on 761101,control Room Radiation Sampling Sys Low Flow Alarm & Low Flow Isolation Signal Not Received from Flow Switches FS-0760 a & B.Caused by Wiring Error.Wiring Error Corrected,Alarm Tested Successfully & Test Rewri
page: https://kanterella.com/05000277/LER-2D1976-2D074-2D03-2C_/03L-3Aon_761101-2Ccontrol_Room_Radiation_Sampling_Sys_Low_Flow_Alarm_-26_Low_Flow_Isolation_Signal_Not_Received_from_Flow_Switches_FS-2D0760_a…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-074-03, /03L:on 761101,control Room Radiation Sampling Sys Low Flow Alarm & Low Flow Isolation Signal Not Received from Flow Switches FS-0760 a & B.Caused by Wiring Error.Wiring Error Corrected,Alarm Tested Successfully & Test Rewri

03L:on 760426,reactor Level Switch LIS 2-2-3-101B Observed to Bounce When Trip Signal Applied.Caused by Defective Microswitch in Barton Model 288A Level Indicating Switch.Microswitch Replaced,Recalibr & Tested
type: Subject
label: 05000277/LER-1976-037-03, /03L:on 760426,reactor Level Switch LIS 2-2-3-101B Observed to Bounce When Trip Signal Applied.Caused by Defective Microswitch in Barton Model 288A Level Indicating Switch.Microswitch Replaced,Recalibr & Tested
page: https://kanterella.com/05000277/LER-2D1976-2D037-2D03-2C_/03L-3Aon_760426-2Creactor_Level_Switch_LIS_2-2D2-2D3-2D101B_Observed_to_Bounce_When_Trip_Signal_Applied.Caused_by_Defective_Microswitch_in_Bar…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-037-03, /03L:on 760426,reactor Level Switch LIS 2-2-3-101B Observed to Bounce When Trip Signal Applied.Caused by Defective Microswitch in Barton Model 288A Level Indicating Switch.Microswitch Replaced,Recalibr & Tested

03L:from 760315 to 760328,RHR HX 2A Leak Permitted Radioactive Water to Leak from Condensate Storage Transfer Sys to River.Caused by Two Leaking Tubes & Failed Internal Bellows
type: Subject
label: 05000277/LER-1976-019-03, /03L:from 760315 to 760328,RHR HX 2A Leak Permitted Radioactive Water to Leak from Condensate Storage Transfer Sys to River.Caused by Two Leaking Tubes & Failed Internal Bellows
page: https://kanterella.com/05000277/LER-2D1976-2D019-2D03-2C_/03L-3Afrom_760315_to_760328-2CRHR_HX_2A_Leak_Permitted_Radioactive_Water_to_Leak_from_Condensate_Storage_Transfer_Sys_to_River.Caused_by_Two_L…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-019-03, /03L:from 760315 to 760328,RHR HX 2A Leak Permitted Radioactive Water to Leak from Condensate Storage Transfer Sys to River.Caused by Two Leaking Tubes & Failed Internal Bellows

05000277/LER-1976-075-03, /03L:on 761109,core Spray a Full Flow Test Return Valve MO-26A Failed to Close.Caused by Motor Operator Gear Train Failure.Valve Operator Replaced & Valve Operated Properly
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D075-2D03-2C_/03L-3Aon_761109-2Ccore_Spray_a_Full_Flow_Test_Return_Valve_MO-2D26A_Failed_to_Close.Caused_by_Motor_Operator_Gear_Train_Failure.Valve_Operator…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-075-03, /03L:on 761109,core Spray a Full Flow Test Return Valve MO-26A Failed to Close.Caused by Motor Operator Gear Train Failure.Valve Operator Replaced & Valve Operated Properly

01T:on 760304,gaseous Release Rate Exceeded Tech Spec Limit.Caused by Backwash Delay.Mod Currently Under Investigation Would Direct Backwash Venting to Hotwell, Allowing Gaseous Effluent Benefit of Offgas Sys
type: Subject
label: 05000277/LER-1976-015-01, /01T:on 760304,gaseous Release Rate Exceeded Tech Spec Limit.Caused by Backwash Delay.Mod Currently Under Investigation Would Direct Backwash Venting to Hotwell, Allowing Gaseous Effluent Benefit of Offgas Sys
page: https://kanterella.com/05000277/LER-2D1976-2D015-2D01-2C_/01T-3Aon_760304-2Cgaseous_Release_Rate_Exceeded_Tech_Spec_Limit.Caused_by_Backwash_Delay.Mod_Currently_Under_Investigation_Would_Direct_Backwa…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-015-01, /01T:on 760304,gaseous Release Rate Exceeded Tech Spec Limit.Caused by Backwash Delay.Mod Currently Under Investigation Would Direct Backwash Venting to Hotwell, Allowing Gaseous Effluent Benefit of Offgas Sys

01T:on 760719,HPCI Turbine Speed Could Not Be Controlled by Controller or Test Pot.Caused by Two Defective 2166 Zener Diodes & Defective 747 Integrated Circuit Chip in Ramp Generator & Signal Converter Assembly
type: Subject
label: 05000277/LER-1976-054-01, /01T:on 760719,HPCI Turbine Speed Could Not Be Controlled by Controller or Test Pot.Caused by Two Defective 2166 Zener Diodes & Defective 747 Integrated Circuit Chip in Ramp Generator & Signal Converter Assembly
page: https://kanterella.com/05000277/LER-2D1976-2D054-2D01-2C_/01T-3Aon_760719-2CHPCI_Turbine_Speed_Could_Not_Be_Controlled_by_Controller_or_Test_Pot.Caused_by_Two_Defective_2166_Zener_Diodes_-26_Defective…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-054-01, /01T:on 760719,HPCI Turbine Speed Could Not Be Controlled by Controller or Test Pot.Caused by Two Defective 2166 Zener Diodes & Defective 747 Integrated Circuit Chip in Ramp Generator & Signal Converter Assembly

01T:on 760428,hydraulic Snubber SS-2-B on Recirculation Pump Sys Found Inoperable Due to Empty Reservoir.Caused by Defective Seals & O Rings.Defective Parts Will Be Replaced & Snubbers Tested
type: Subject
label: 05000277/LER-1976-033-01, /01T:on 760428,hydraulic Snubber SS-2-B on Recirculation Pump Sys Found Inoperable Due to Empty Reservoir.Caused by Defective Seals & O Rings.Defective Parts Will Be Replaced & Snubbers Tested
page: https://kanterella.com/05000277/LER-2D1976-2D033-2D01-2C_/01T-3Aon_760428-2Chydraulic_Snubber_SS-2D2-2DB_on_Recirculation_Pump_Sys_Found_Inoperable_Due_to_Empty_Reservoir.Caused_by_Defective_Seals_-26…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-033-01, /01T:on 760428,hydraulic Snubber SS-2-B on Recirculation Pump Sys Found Inoperable Due to Empty Reservoir.Caused by Defective Seals & O Rings.Defective Parts Will Be Replaced & Snubbers Tested

05000277/LER-1976-039-03, /03L:on 760507,required Source Range Monitor Surveillance Test Not Done Due to LPRM String Replacement. Importance of Test Completion Emphasized to Personnel
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D039-2D03-2C_/03L-3Aon_760507-2Crequired_Source_Range_Monitor_Surveillance_Test_Not_Done_Due_to_LPRM_String_Replacement._Importance_of_Test_Completion_Empha…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-039-03, /03L:on 760507,required Source Range Monitor Surveillance Test Not Done Due to LPRM String Replacement. Importance of Test Completion Emphasized to Personnel

01T:on 760820,torus Vol Fell Below Tech Spec Level.Caused by Defective Positioner on Control Valve Returning Condensate to Torus.Valve Positioner Repaired & Valve Returned to Svc
type: Subject
label: 05000277/LER-1976-058-01, /01T:on 760820,torus Vol Fell Below Tech Spec Level.Caused by Defective Positioner on Control Valve Returning Condensate to Torus.Valve Positioner Repaired & Valve Returned to Svc
page: https://kanterella.com/05000277/LER-2D1976-2D058-2D01-2C_/01T-3Aon_760820-2Ctorus_Vol_Fell_Below_Tech_Spec_Level.Caused_by_Defective_Positioner_on_Control_Valve_Returning_Condensate_to_Torus.Valve_Pos…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-058-01, /01T:on 760820,torus Vol Fell Below Tech Spec Level.Caused by Defective Positioner on Control Valve Returning Condensate to Torus.Valve Positioner Repaired & Valve Returned to Svc

05000277/LER-1976-046-01, /01T:on 760629,all Four Recombiner Hydrogen Analyzers Found Valved Out of Svc.Caused by Procedural Deficiency.Plant Procedures Revised
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D046-2D01-2C_/01T-3Aon_760629-2Call_Four_Recombiner_Hydrogen_Analyzers_Found_Valved_Out_of_Svc.Caused_by_Procedural_Deficiency.Plant_Procedures_Revised
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-046-01, /01T:on 760629,all Four Recombiner Hydrogen Analyzers Found Valved Out of Svc.Caused by Procedural Deficiency.Plant Procedures Revised

01T:on 760428,11 Hydraulic Snubbers on Main Steam Relief Valve Discharge Lines Found Inoperable.Ten Inoperable Because of Empty Reservoirs & One Because of Rotated Reservoir.Caused by Defective Seals & O Rings
type: Subject
label: 05000277/LER-1976-031-01, /01T:on 760428,11 Hydraulic Snubbers on Main Steam Relief Valve Discharge Lines Found Inoperable.Ten Inoperable Because of Empty Reservoirs & One Because of Rotated Reservoir.Caused by Defective Seals & O Rings
page: https://kanterella.com/05000277/LER-2D1976-2D031-2D01-2C_/01T-3Aon_760428-2C11_Hydraulic_Snubbers_on_Main_Steam_Relief_Valve_Discharge_Lines_Found_Inoperable.Ten_Inoperable_Because_of_Empty_Reservoirs…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-031-01, /01T:on 760428,11 Hydraulic Snubbers on Main Steam Relief Valve Discharge Lines Found Inoperable.Ten Inoperable Because of Empty Reservoirs & One Because of Rotated Reservoir.Caused by Defective Seals & O Rings

03L:on 760408,control Room Radiation Monitor RIS-0760A Failed in Low Count Direction.Caused by Logic Chip Vibrating Out of Socket.Logic Chip Reinserted & Unit Operated Properly
type: Subject
label: 05000277/LER-1976-024-03, /03L:on 760408,control Room Radiation Monitor RIS-0760A Failed in Low Count Direction.Caused by Logic Chip Vibrating Out of Socket.Logic Chip Reinserted & Unit Operated Properly
page: https://kanterella.com/05000277/LER-2D1976-2D024-2D03-2C_/03L-3Aon_760408-2Ccontrol_Room_Radiation_Monitor_RIS-2D0760A_Failed_in_Low_Count_Direction.Caused_by_Logic_Chip_Vibrating_Out_of_Socket.Logic_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-024-03, /03L:on 760408,control Room Radiation Monitor RIS-0760A Failed in Low Count Direction.Caused by Logic Chip Vibrating Out of Socket.Logic Chip Reinserted & Unit Operated Properly

Empty Reservoir.No Apparent Cause Found.Suppressor Refilled & Leak Checked Prior to Reinstallation
type: Subject
label: 05000277/LER-1976-062-01, /01T:on 760825,suppressor on Main Steam Relief Valve Discharge Line C Found W/Empty Reservoir.No Apparent Cause Found.Suppressor Refilled & Leak Checked Prior to Reinstallation
page: https://kanterella.com/05000277/LER-2D1976-2D062-2D01-2C_/01T-3Aon_760825-2Csuppressor_on_Main_Steam_Relief_Valve_Discharge_Line_C_Found_W/Empty_Reservoir.No_Apparent_Cause_Found.Suppressor_Refilled_-…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-062-01, /01T:on 760825,suppressor on Main Steam Relief Valve Discharge Line C Found W/Empty Reservoir.No Apparent Cause Found.Suppressor Refilled & Leak Checked Prior to Reinstallation

03L:on 761228,RCIC Steam Supply Isolation Valve MO-13-16 Failed to Respond to Auto Open Signal During Routine Surveillance Testing.Caused by Valve Motor Damage Due to Failure of Torque Switch.Motor & Switch Replaced
type: Subject
label: 05000277/LER-1976-081-03, /03L:on 761228,RCIC Steam Supply Isolation Valve MO-13-16 Failed to Respond to Auto Open Signal During Routine Surveillance Testing.Caused by Valve Motor Damage Due to Failure of Torque Switch.Motor & Switch Replaced
page: https://kanterella.com/05000277/LER-2D1976-2D081-2D03-2C_/03L-3Aon_761228-2CRCIC_Steam_Supply_Isolation_Valve_MO-2D13-2D16_Failed_to_Respond_to_Auto_Open_Signal_During_Routine_Surveillance_Testing.Cau…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-081-03, /03L:on 761228,RCIC Steam Supply Isolation Valve MO-13-16 Failed to Respond to Auto Open Signal During Routine Surveillance Testing.Caused by Valve Motor Damage Due to Failure of Torque Switch.Motor & Switch Replaced

05000277/LER-1976-071-03, /03L:on 761005,RCIC Trip Throttle Valve Would Not Reset After Trip.Caused by Grounded Wire on Trombetta Trip Solenoid Model G-206.Solenoid Repaired
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D071-2D03-2C_/03L-3Aon_761005-2CRCIC_Trip_Throttle_Valve_Would_Not_Reset_After_Trip.Caused_by_Grounded_Wire_on_Trombetta_Trip_Solenoid_Model_G-2D206.Solenoi…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-071-03, /03L:on 761005,RCIC Trip Throttle Valve Would Not Reset After Trip.Caused by Grounded Wire on Trombetta Trip Solenoid Model G-206.Solenoid Repaired

03L:on 760803,control Room Ventilation Radiation Monitor RIS-0160A Displayed Abnormal Reading.Caused by Failure of Integrating Circuit in Exponent Counting Circuit of Trapelo DRM-100 Digital Process Radiation Monitor
type: Subject
label: 05000277/LER-1976-056-03, /03L:on 760803,control Room Ventilation Radiation Monitor RIS-0160A Displayed Abnormal Reading.Caused by Failure of Integrating Circuit in Exponent Counting Circuit of Trapelo DRM-100 Digital Process Radiation Monitor
page: https://kanterella.com/05000277/LER-2D1976-2D056-2D03-2C_/03L-3Aon_760803-2Ccontrol_Room_Ventilation_Radiation_Monitor_RIS-2D0160A_Displayed_Abnormal_Reading.Caused_by_Failure_of_Integrating_Circuit_i…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-056-03, /03L:on 760803,control Room Ventilation Radiation Monitor RIS-0160A Displayed Abnormal Reading.Caused by Failure of Integrating Circuit in Exponent Counting Circuit of Trapelo DRM-100 Digital Process Radiation Monitor

05000277/LER-1976-053-03, /03L:on 760712,second Quarter Average Release Rate for Iodine & Particulate Exceeded Tech Spec.Caused by Shutdown & Depressurization for Refueling
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D053-2D03-2C_/03L-3Aon_760712-2Csecond_Quarter_Average_Release_Rate_for_Iodine_-26_Particulate_Exceeded_Tech_Spec.Caused_by_Shutdown_-26_Depressurization_fo…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-053-03, /03L:on 760712,second Quarter Average Release Rate for Iodine & Particulate Exceeded Tech Spec.Caused by Shutdown & Depressurization for Refueling

01T:on 770104,reservoirs of Hydraulic Snubber Relief Valves RV-71E & SS-C6 Found Empty.Caused by Reservoir Leak & Loose Locking Nut Allowing Unit to Turn Upside Down. Repairs Made & Reservoirs Filled
type: Subject
label: 05000277/LER-1977-001-01, /01T:on 770104,reservoirs of Hydraulic Snubber Relief Valves RV-71E & SS-C6 Found Empty.Caused by Reservoir Leak & Loose Locking Nut Allowing Unit to Turn Upside Down. Repairs Made & Reservoirs Filled
page: https://kanterella.com/05000277/LER-2D1977-2D001-2D01-2C_/01T-3Aon_770104-2Creservoirs_of_Hydraulic_Snubber_Relief_Valves_RV-2D71E_-26_SS-2DC6_Found_Empty.Caused_by_Reservoir_Leak_-26_Loose_Locking_Nu…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1977-001-01, /01T:on 770104,reservoirs of Hydraulic Snubber Relief Valves RV-71E & SS-C6 Found Empty.Caused by Reservoir Leak & Loose Locking Nut Allowing Unit to Turn Upside Down. Repairs Made & Reservoirs Filled

05000277/LER-1976-027-03, /03L:on 760409,relief Valve Bellows Leak Detector Switch PS-2-2-71L Failed to Trip as Result of Broken Wire Connector to Switch.Connector Replaced
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D027-2D03-2C_/03L-3Aon_760409-2Crelief_Valve_Bellows_Leak_Detector_Switch_PS-2D2-2D2-2D71L_Failed_to_Trip_as_Result_of_Broken_Wire_Connector_to_Switch.Conne…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-027-03, /03L:on 760409,relief Valve Bellows Leak Detector Switch PS-2-2-71L Failed to Trip as Result of Broken Wire Connector to Switch.Connector Replaced

Steam Driven Auxiliary Feedwater Pump.Caused by Binding Valve Seat Surfaces.Valve Recycled
type: Subject
label: 05000261/LER-1977-006, :on 770326,during 0% Power,Valve V2-14A Failed to Open While Attempting to Feed Steam Generator a Through Valve W/Steam Driven Auxiliary Feedwater Pump.Caused by Binding Valve Seat Surfaces.Valve Recycled
page: https://kanterella.com/05000261/LER-2D1977-2D006-2C_-3Aon_770326-2Cduring_0-_Power-2CValve_V2-2D14A_Failed_to_Open_While_Attempting_to_Feed_Steam_Generator_a_Through_Valve_W/Steam_Driven_Auxiliary_Fee…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000261/LER-1977-006, :on 770326,during 0% Power,Valve V2-14A Failed to Open While Attempting to Feed Steam Generator a Through Valve W/Steam Driven Auxiliary Feedwater Pump.Caused by Binding Valve Seat Surfaces.Valve Recycled

03L:on 760829,containment Atmosphere Dilution Sys Declared Inoperable Because Liquid Nitrogen Tank Relief Valve Failed to Reseat,Blowing Down Content Below Limits. Blowback Ring Replaced
type: Subject
label: 05000277/LER-1976-064-03, /03L:on 760829,containment Atmosphere Dilution Sys Declared Inoperable Because Liquid Nitrogen Tank Relief Valve Failed to Reseat,Blowing Down Content Below Limits. Blowback Ring Replaced
page: https://kanterella.com/05000277/LER-2D1976-2D064-2D03-2C_/03L-3Aon_760829-2Ccontainment_Atmosphere_Dilution_Sys_Declared_Inoperable_Because_Liquid_Nitrogen_Tank_Relief_Valve_Failed_to_Reseat-2CBlowing…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-064-03, /03L:on 760829,containment Atmosphere Dilution Sys Declared Inoperable Because Liquid Nitrogen Tank Relief Valve Failed to Reseat,Blowing Down Content Below Limits. Blowback Ring Replaced

03L:on 760509,gamma Scan Not Performed Prior to Two Liquid Effluent Releases.Caused by Lack of Radwaste Storage Capacity.Beta Activity Reviewed Prior to Release. Based on Previous Data,Limit Would Not Be Exceeded
type: Subject
label: 05000277/LER-1976-040-03, /03L:on 760509,gamma Scan Not Performed Prior to Two Liquid Effluent Releases.Caused by Lack of Radwaste Storage Capacity.Beta Activity Reviewed Prior to Release. Based on Previous Data,Limit Would Not Be Exceeded
page: https://kanterella.com/05000277/LER-2D1976-2D040-2D03-2C_/03L-3Aon_760509-2Cgamma_Scan_Not_Performed_Prior_to_Two_Liquid_Effluent_Releases.Caused_by_Lack_of_Radwaste_Storage_Capacity.Beta_Activity_Rev…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-040-03, /03L:on 760509,gamma Scan Not Performed Prior to Two Liquid Effluent Releases.Caused by Lack of Radwaste Storage Capacity.Beta Activity Reviewed Prior to Release. Based on Previous Data,Limit Would Not Be Exceeded

05000277/LER-1976-060-03, /03L:on 760821,improper Sample Obtained from Drywell Radioactive Gas Sampling Sys Due to Leakage.Caused by Loose Fitting on Electrical Penetration.Fitting Tightened
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D060-2D03-2C_/03L-3Aon_760821-2Cimproper_Sample_Obtained_from_Drywell_Radioactive_Gas_Sampling_Sys_Due_to_Leakage.Caused_by_Loose_Fitting_on_Electrical_Pene…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-060-03, /03L:on 760821,improper Sample Obtained from Drywell Radioactive Gas Sampling Sys Due to Leakage.Caused by Loose Fitting on Electrical Penetration.Fitting Tightened

05000277/LER-1976-036-01, /01T:on 760428,three Hydraulic Snubbers on Feedwater Sys Found Inoperable.Two Snubbers Failed Because of Rotated Reservoir.Snubbers Repaired or Will Be Repaired
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D036-2D01-2C_/01T-3Aon_760428-2Cthree_Hydraulic_Snubbers_on_Feedwater_Sys_Found_Inoperable.Two_Snubbers_Failed_Because_of_Rotated_Reservoir.Snubbers_Repaire…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-036-01, /01T:on 760428,three Hydraulic Snubbers on Feedwater Sys Found Inoperable.Two Snubbers Failed Because of Rotated Reservoir.Snubbers Repaired or Will Be Repaired

01T:on 760329,gaseous Release Rate Exceeded Rate Allowable.Caused by Depressurization of Reactor to Main Condenser.Release Rate Returned to Normal,Vacuum Established & Depressurization Restarted
type: Subject
label: 05000277/LER-1976-018-01, /01T:on 760329,gaseous Release Rate Exceeded Rate Allowable.Caused by Depressurization of Reactor to Main Condenser.Release Rate Returned to Normal,Vacuum Established & Depressurization Restarted
page: https://kanterella.com/05000277/LER-2D1976-2D018-2D01-2C_/01T-3Aon_760329-2Cgaseous_Release_Rate_Exceeded_Rate_Allowable.Caused_by_Depressurization_of_Reactor_to_Main_Condenser.Release_Rate_Returned_t…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-018-01, /01T:on 760329,gaseous Release Rate Exceeded Rate Allowable.Caused by Depressurization of Reactor to Main Condenser.Release Rate Returned to Normal,Vacuum Established & Depressurization Restarted

05000278/LER-1976-003-03, /03L:on 760106,main Steam Line Radiation Monitor RIS-251A Did Not Trip at Desired High Trip Setpoint.Caused by Setpoint Drift.Setpoint Adjusted to Acceptable Value
type: Subject
page: https://kanterella.com/05000278/LER-2D1976-2D003-2D03-2C_/03L-3Aon_760106-2Cmain_Steam_Line_Radiation_Monitor_RIS-2D251A_Did_Not_Trip_at_Desired_High_Trip_Setpoint.Caused_by_Setpoint_Drift.Setpoint_Ad…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000278/LER-1976-003-03, /03L:on 760106,main Steam Line Radiation Monitor RIS-251A Did Not Trip at Desired High Trip Setpoint.Caused by Setpoint Drift.Setpoint Adjusted to Acceptable Value

03L:on 770111,transient in-core Machine Probe Travelled Beyond in-shield Limit Switch During Withdrawal. Caused by Personnel Misoperation & Short Circuit in Backup Circuit.Short Corrected
type: Subject
label: 05000277/LER-1977-006-03, /03L:on 770111,transient in-core Machine Probe Travelled Beyond in-shield Limit Switch During Withdrawal. Caused by Personnel Misoperation & Short Circuit in Backup Circuit.Short Corrected
page: https://kanterella.com/05000277/LER-2D1977-2D006-2D03-2C_/03L-3Aon_770111-2Ctransient_in-2Dcore_Machine_Probe_Travelled_Beyond_in-2Dshield_Limit_Switch_During_Withdrawal._Caused_by_Personnel_Misoperat…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1977-006-03, /03L:on 770111,transient in-core Machine Probe Travelled Beyond in-shield Limit Switch During Withdrawal. Caused by Personnel Misoperation & Short Circuit in Backup Circuit.Short Corrected

01T:on 761114,main Steam Relief Valve 71F Failed Open.Caused by Dirt Under Pilot Disk & Seat,Leading to Seat Leakage & Cutting,Precipitating Valve Lifting.Plant Shut Down & Relief Valve Replaced
type: Subject
label: 05000277/LER-1976-077-01, /01T:on 761114,main Steam Relief Valve 71F Failed Open.Caused by Dirt Under Pilot Disk & Seat,Leading to Seat Leakage & Cutting,Precipitating Valve Lifting.Plant Shut Down & Relief Valve Replaced
page: https://kanterella.com/05000277/LER-2D1976-2D077-2D01-2C_/01T-3Aon_761114-2Cmain_Steam_Relief_Valve_71F_Failed_Open.Caused_by_Dirt_Under_Pilot_Disk_-26_Seat-2CLeading_to_Seat_Leakage_-26_Cutting-2CPre…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-077-01, /01T:on 761114,main Steam Relief Valve 71F Failed Open.Caused by Dirt Under Pilot Disk & Seat,Leading to Seat Leakage & Cutting,Precipitating Valve Lifting.Plant Shut Down & Relief Valve Replaced

05000277/LER-1976-078-03, /03L:on 761115,PS-2-2-134B & PS-2-2-134A Tripped at 845 Psig & 860 Psig,Respectively.Caused by Setpoint Shift.Switches Recalibr
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D078-2D03-2C_/03L-3Aon_761115-2CPS-2D2-2D2-2D134B_-26_PS-2D2-2D2-2D134A_Tripped_at_845_Psig_-26_860_Psig-2CRespectively.Caused_by_Setpoint_Shift.Switches_Re…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-078-03, /03L:on 761115,PS-2-2-134B & PS-2-2-134A Tripped at 845 Psig & 860 Psig,Respectively.Caused by Setpoint Shift.Switches Recalibr

03L:on 761118,outboard MSIV Failed to Close During Surveillance Testing Due to Backseat Deformation. Caused by Valve Stem Gauging & Preventing Free Valve Movement.Valve Repaired & Tested Satisfactorily
type: Subject
label: 05000277/LER-1976-080-03, /03L:on 761118,outboard MSIV Failed to Close During Surveillance Testing Due to Backseat Deformation. Caused by Valve Stem Gauging & Preventing Free Valve Movement.Valve Repaired & Tested Satisfactorily
page: https://kanterella.com/05000277/LER-2D1976-2D080-2D03-2C_/03L-3Aon_761118-2Coutboard_MSIV_Failed_to_Close_During_Surveillance_Testing_Due_to_Backseat_Deformation._Caused_by_Valve_Stem_Gauging_-26_Prev…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-080-03, /03L:on 761118,outboard MSIV Failed to Close During Surveillance Testing Due to Backseat Deformation. Caused by Valve Stem Gauging & Preventing Free Valve Movement.Valve Repaired & Tested Satisfactorily

05000277/LER-1977-003-01, /01T:on 770103,insp of Four Relief Valves Revealed Delamination & Overheating of Air Operator Diaphragms.Cause Not Stated.Diaphragms Replaced
type: Subject
page: https://kanterella.com/05000277/LER-2D1977-2D003-2D01-2C_/01T-3Aon_770103-2Cinsp_of_Four_Relief_Valves_Revealed_Delamination_-26_Overheating_of_Air_Operator_Diaphragms.Cause_Not_Stated.Diaphragms_Repl…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1977-003-01, /01T:on 770103,insp of Four Relief Valves Revealed Delamination & Overheating of Air Operator Diaphragms.Cause Not Stated.Diaphragms Replaced

03L:on 760710,probe 1 Stopped 1 Inch Before Reaching Preset Shield Limit During Withdrawal & Machine Ball Valve Did Not Close.Probe Machine Shield Limit Switch Operated Spuriously Causing Incomplete Withdrawal
type: Subject
label: 05000277/LER-1976-052-03, /03L:on 760710,probe 1 Stopped 1 Inch Before Reaching Preset Shield Limit During Withdrawal & Machine Ball Valve Did Not Close.Probe Machine Shield Limit Switch Operated Spuriously Causing Incomplete Withdrawal
page: https://kanterella.com/05000277/LER-2D1976-2D052-2D03-2C_/03L-3Aon_760710-2Cprobe_1_Stopped_1_Inch_Before_Reaching_Preset_Shield_Limit_During_Withdrawal_-26_Machine_Ball_Valve_Did_Not_Close.Probe_Mach…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-052-03, /03L:on 760710,probe 1 Stopped 1 Inch Before Reaching Preset Shield Limit During Withdrawal & Machine Ball Valve Did Not Close.Probe Machine Shield Limit Switch Operated Spuriously Causing Incomplete Withdrawal

05000271/LER-1975-007, :on 750309,personnel Observed Flow Fault Alarm & Loss of Power Indication on Containment Air Sampling Sys Sample Pump.Caused by Bearing Seizure.Pump Replaced
type: Subject
page: https://kanterella.com/05000271/LER-2D1975-2D007-2C_-3Aon_750309-2Cpersonnel_Observed_Flow_Fault_Alarm_-26_Loss_of_Power_Indication_on_Containment_Air_Sampling_Sys_Sample_Pump.Caused_by_Bearing_Seizur…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1975-007, :on 750309,personnel Observed Flow Fault Alarm & Loss of Power Indication on Containment Air Sampling Sys Sample Pump.Caused by Bearing Seizure.Pump Replaced

05000277/LER-1976-084-03, /03L:on 761217,HPCI Steam Line High Flow Switch DPIS-2-23-76 Found Higher than Tech Spec Limit.Caused by Setpoint Shift.Switch Recalibr & Tested Satisfactorily
type: Subject
page: https://kanterella.com/05000277/LER-2D1976-2D084-2D03-2C_/03L-3Aon_761217-2CHPCI_Steam_Line_High_Flow_Switch_DPIS-2D2-2D23-2D76_Found_Higher_than_Tech_Spec_Limit.Caused_by_Setpoint_Shift.Switch_Recali…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-084-03, /03L:on 761217,HPCI Steam Line High Flow Switch DPIS-2-23-76 Found Higher than Tech Spec Limit.Caused by Setpoint Shift.Switch Recalibr & Tested Satisfactorily

03L:on 760405,drywell High Pressure Switches PS-2-10-101C & PS-2-10-119C Found Valved Out of Svc.Caused by Personnel Error.Verification of Valve Lineup After Tests Emphasized
type: Subject
label: 05000277/LER-1976-023-03, /03L:on 760405,drywell High Pressure Switches PS-2-10-101C & PS-2-10-119C Found Valved Out of Svc.Caused by Personnel Error.Verification of Valve Lineup After Tests Emphasized
page: https://kanterella.com/05000277/LER-2D1976-2D023-2D03-2C_/03L-3Aon_760405-2Cdrywell_High_Pressure_Switches_PS-2D2-2D10-2D101C_-26_PS-2D2-2D10-2D119C_Found_Valved_Out_of_Svc.Caused_by_Personnel_Error.V…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-023-03, /03L:on 760405,drywell High Pressure Switches PS-2-10-101C & PS-2-10-119C Found Valved Out of Svc.Caused by Personnel Error.Verification of Valve Lineup After Tests Emphasized

http://kanterella.com/Special:URIResolver/05000277/LER-2D1976-2D061-2D03-2C_/03L-3Aon_760823-2Cdrywell_Radioactive_Gas_Sample_Pumps_Tripped_-26_Sample_Sys_Isolated-2CRemoving_Sys_from_Svc._Relay_GE_CR…
type: Subject
label: 05000277/LER-1976-061-03, /03L:on 760823,drywell Radioactive Gas Sample Pumps Tripped & Sample Sys Isolated,Removing Sys from Svc. Relay GE CR120AD04041AA Failed in Fail Safe Position.Relay Replaced & Sys Returned to Svc
page: https://kanterella.com/05000277/LER-2D1976-2D061-2D03-2C_/03L-3Aon_760823-2Cdrywell_Radioactive_Gas_Sample_Pumps_Tripped_-26_Sample_Sys_Isolated-2CRemoving_Sys_from_Svc._Relay_GE_CR120AD04041AA_Failed…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-061-03, /03L:on 760823,drywell Radioactive Gas Sample Pumps Tripped & Sample Sys Isolated,Removing Sys from Svc. Relay GE CR120AD04041AA Failed in Fail Safe Position.Relay Replaced & Sys Returned to Svc

05000263/LER-1976-003, :on 760504,during Test,Primary Containment Oxygen Concentration Found Above Tech Spec Limit.Caused by Leaking Asco Solenoid Valve.Solenoid Valve Isolated
type: Subject
page: https://kanterella.com/05000263/LER-2D1976-2D003-2C_-3Aon_760504-2Cduring_Test-2CPrimary_Containment_Oxygen_Concentration_Found_Above_Tech_Spec_Limit.Caused_by_Leaking_Asco_Solenoid_Valve.Solenoid_Val…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1976-003, :on 760504,during Test,Primary Containment Oxygen Concentration Found Above Tech Spec Limit.Caused by Leaking Asco Solenoid Valve.Solenoid Valve Isolated

03L:on 761011,core Flow Bias Input to a Logic APRM String Found 4- High.Caused by Absence of Offset Signal in GE Flow Bias Proportional Amplifier.Amplifier Removed from Svc & Signal Normalized.Failure Not Duplicable
type: Subject
label: 05000278/LER-1976-069-03, /03L:on 761011,core Flow Bias Input to a Logic APRM String Found 4% High.Caused by Absence of Offset Signal in GE Flow Bias Proportional Amplifier.Amplifier Removed from Svc & Signal Normalized.Failure Not Duplicable
page: https://kanterella.com/05000278/LER-2D1976-2D069-2D03-2C_/03L-3Aon_761011-2Ccore_Flow_Bias_Input_to_a_Logic_APRM_String_Found_4-_High.Caused_by_Absence_of_Offset_Signal_in_GE_Flow_Bias_Proportional_Am…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000278/LER-1976-069-03, /03L:on 761011,core Flow Bias Input to a Logic APRM String Found 4% High.Caused by Absence of Offset Signal in GE Flow Bias Proportional Amplifier.Amplifier Removed from Svc & Signal Normalized.Failure Not Duplicable

LER-1976-023-01, :on 760924,surveillance Coordinator Failed to Locate Main Steam Line Radiation Monitor Functional Test Scheduled for Wk of 760912.Caused by Test Overlooked & Not Assigned for Completion
type: Subject
label: 05000263/LER-1976-023-01, :on 760924,surveillance Coordinator Failed to Locate Main Steam Line Radiation Monitor Functional Test Scheduled for Wk of 760912.Caused by Test Overlooked & Not Assigned for Completion
page: https://kanterella.com/05000263/LER-2D1976-2D023-2D01-2C_-3Aon_760924-2Csurveillance_Coordinator_Failed_to_Locate_Main_Steam_Line_Radiation_Monitor_Functional_Test_Scheduled_for_Wk_of_760912.Caused_by…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1976-023-01, :on 760924,surveillance Coordinator Failed to Locate Main Steam Line Radiation Monitor Functional Test Scheduled for Wk of 760912.Caused by Test Overlooked & Not Assigned for Completion

03L:on 761005,setpoint of Automatic Depressurization Sys Confirmatory Low Level Switch LIS 2-2-2-83A Was 0.85 Inches Lower than 6-inch Tech Spec Limit.Caused by Slight Setpoint Drift.Switch Recalibr
type: Subject
label: 05000277/LER-1976-072-03, /03L:on 761005,setpoint of Automatic Depressurization Sys Confirmatory Low Level Switch LIS 2-2-2-83A Was 0.85 Inches Lower than 6-inch Tech Spec Limit.Caused by Slight Setpoint Drift.Switch Recalibr
page: https://kanterella.com/05000277/LER-2D1976-2D072-2D03-2C_/03L-3Aon_761005-2Csetpoint_of_Automatic_Depressurization_Sys_Confirmatory_Low_Level_Switch_LIS_2-2D2-2D2-2D83A_Was_0.85_Inches_Lower_than_6-2D…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000277/LER-1976-072-03, /03L:on 761005,setpoint of Automatic Depressurization Sys Confirmatory Low Level Switch LIS 2-2-2-83A Was 0.85 Inches Lower than 6-inch Tech Spec Limit.Caused by Slight Setpoint Drift.Switch Recalibr

LER-1977-001, :on 770118,during Normal Operation,Accumulator on Control Rod Drive Hydraulic Control Unit 14-19 Declared Inoperable.Caused by Failure to Hold Pressure Due to Leaking Stem Packing.Packing Replaced
type: Subject
label: 05000263/LER-1977-001, :on 770118,during Normal Operation,Accumulator on Control Rod Drive Hydraulic Control Unit 14-19 Declared Inoperable.Caused by Failure to Hold Pressure Due to Leaking Stem Packing.Packing Replaced
page: https://kanterella.com/05000263/LER-2D1977-2D001-2C_-3Aon_770118-2Cduring_Normal_Operation-2CAccumulator_on_Control_Rod_Drive_Hydraulic_Control_Unit_14-2D19_Declared_Inoperable.Caused_by_Failure_to_Ho…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1977-001, :on 770118,during Normal Operation,Accumulator on Control Rod Drive Hydraulic Control Unit 14-19 Declared Inoperable.Caused by Failure to Hold Pressure Due to Leaking Stem Packing.Packing Replaced

05000263/LER-1976-006, :on 760603,during Test,Hpci Steam Line Inboard Isolation Valve Failed to Close Completely.Caused by Torque Switch Setting Drifting Too Low.Switch Reset
type: Subject
page: https://kanterella.com/05000263/LER-2D1976-2D006-2C_-3Aon_760603-2Cduring_Test-2CHpci_Steam_Line_Inboard_Isolation_Valve_Failed_to_Close_Completely.Caused_by_Torque_Switch_Setting_Drifting_Too_Low.Swi…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1976-006, :on 760603,during Test,Hpci Steam Line Inboard Isolation Valve Failed to Close Completely.Caused by Torque Switch Setting Drifting Too Low.Switch Reset

01T:on 760111,hydraulic Snubber on a Reactor Recirculation Pump a Inoperable Because of Empty Reservoir. Caused by Leaking fittings,O-rings & Gaskets.Defective Parts Replaced
type: Subject
label: 05000278/LER-1976-007-01, /01T:on 760111,hydraulic Snubber on a Reactor Recirculation Pump a Inoperable Because of Empty Reservoir. Caused by Leaking fittings,O-rings & Gaskets.Defective Parts Replaced
page: https://kanterella.com/05000278/LER-2D1976-2D007-2D01-2C_/01T-3Aon_760111-2Chydraulic_Snubber_on_a_Reactor_Recirculation_Pump_a_Inoperable_Because_of_Empty_Reservoir._Caused_by_Leaking_fittings-2CO-2D…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000278/LER-1976-007-01, /01T:on 760111,hydraulic Snubber on a Reactor Recirculation Pump a Inoperable Because of Empty Reservoir. Caused by Leaking fittings,O-rings & Gaskets.Defective Parts Replaced

03L-0:on 831125,qualified Safety Parameter Display Sys (QSPDS) Channel a Failed & Declared Inoperable. Caused by Interference in Plasma Display Unit Due to Ground Loops.Grounding Configuration Modified
type: Subject
label: 05000362/LER-1983-108-03, /03L-0:on 831125,qualified Safety Parameter Display Sys (QSPDS) Channel a Failed & Declared Inoperable. Caused by Interference in Plasma Display Unit Due to Ground Loops.Grounding Configuration Modified
page: https://kanterella.com/05000362/LER-2D1983-2D108-2D03-2C_/03L-2D0-3Aon_831125-2Cqualified_Safety_Parameter_Display_Sys_-28QSPDS-29_Channel_a_Failed_-26_Declared_Inoperable._Caused_by_Interference_in_P…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000362/LER-1983-108-03, /03L-0:on 831125,qualified Safety Parameter Display Sys (QSPDS) Channel a Failed & Declared Inoperable. Caused by Interference in Plasma Display Unit Due to Ground Loops.Grounding Configuration Modified

1T:on 760724,false All Rods in Signal Received for Rod Manual Control Sys.Caused by Position Indicating Switch on Rod 34-07 Stuck in Closed Position Due to Failed Probe Buffer Card.Card Replaced & Tested
type: Subject
label: 05000271/LER-1976-023-01, /1T:on 760724,false All Rods in Signal Received for Rod Manual Control Sys.Caused by Position Indicating Switch on Rod 34-07 Stuck in Closed Position Due to Failed Probe Buffer Card.Card Replaced & Tested
page: https://kanterella.com/05000271/LER-2D1976-2D023-2D01-2C_/1T-3Aon_760724-2Cfalse_All_Rods_in_Signal_Received_for_Rod_Manual_Control_Sys.Caused_by_Position_Indicating_Switch_on_Rod_34-2D07_Stuck_in_Clo…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1976-023-01, /1T:on 760724,false All Rods in Signal Received for Rod Manual Control Sys.Caused by Position Indicating Switch on Rod 34-07 Stuck in Closed Position Due to Failed Probe Buffer Card.Card Replaced & Tested

LER-1976-032, :on 761030,steam Outlet Block Valve Fuse Would Not Shut After Circulation Transferred to Water Drive.Caused by Stuck Solenoid Valves on Hydraulic Sys.Solenoids Changed on Eight Valves
type: Subject
label: 05000267/LER-1976-032, :on 761030,steam Outlet Block Valve Fuse Would Not Shut After Circulation Transferred to Water Drive.Caused by Stuck Solenoid Valves on Hydraulic Sys.Solenoids Changed on Eight Valves
page: https://kanterella.com/05000267/LER-2D1976-2D032-2C_-3Aon_761030-2Csteam_Outlet_Block_Valve_Fuse_Would_Not_Shut_After_Circulation_Transferred_to_Water_Drive.Caused_by_Stuck_Solenoid_Valves_on_Hydrauli…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000267/LER-1976-032, :on 761030,steam Outlet Block Valve Fuse Would Not Shut After Circulation Transferred to Water Drive.Caused by Stuck Solenoid Valves on Hydraulic Sys.Solenoids Changed on Eight Valves

05000271/LER-1976-030-03, /3L:on 760826,GE Model 8HG1A02011 Drywell Atmospheric Temp Recorder TR-1-149 Failed.Caused by Broken Hub on Chart Drive Mechanism.Mechanism Rebuilt & Recorder Returned to Svc
type: Subject
page: https://kanterella.com/05000271/LER-2D1976-2D030-2D03-2C_/3L-3Aon_760826-2CGE_Model_8HG1A02011_Drywell_Atmospheric_Temp_Recorder_TR-2D1-2D149_Failed.Caused_by_Broken_Hub_on_Chart_Drive_Mechanism.Mecha…
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wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1976-030-03, /3L:on 760826,GE Model 8HG1A02011 Drywell Atmospheric Temp Recorder TR-1-149 Failed.Caused by Broken Hub on Chart Drive Mechanism.Mechanism Rebuilt & Recorder Returned to Svc

3L:on 760930,UPS-1A Trouble Alarm Received.Caused by Filter Capacitor Bank Fuse Clearing Due to Shorted GE Model 86F1323J Capacitor.Bank Will Be Repaired.Investigation Underway by Manufacturer
type: Subject
label: 05000271/LER-1976-036-03, /3L:on 760930,UPS-1A Trouble Alarm Received.Caused by Filter Capacitor Bank Fuse Clearing Due to Shorted GE Model 86F1323J Capacitor.Bank Will Be Repaired.Investigation Underway by Manufacturer
page: https://kanterella.com/05000271/LER-2D1976-2D036-2D03-2C_/3L-3Aon_760930-2CUPS-2D1A_Trouble_Alarm_Received.Caused_by_Filter_Capacitor_Bank_Fuse_Clearing_Due_to_Shorted_GE_Model_86F1323J_Capacitor.Bank…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1976-036-03, /3L:on 760930,UPS-1A Trouble Alarm Received.Caused by Filter Capacitor Bank Fuse Clearing Due to Shorted GE Model 86F1323J Capacitor.Bank Will Be Repaired.Investigation Underway by Manufacturer

3L:on 760813,Exide 250 Kva Uninterruptible Power Supply Output Breaker Tripped,Resulting in Loss of Voltage to Motor Control Ctr 89B.Trip Caused by Noise Entering Unused Static Switch Open Sensing Circuit
type: Subject
label: 05000271/LER-1976-025-03, /3L:on 760813,Exide 250 Kva Uninterruptible Power Supply Output Breaker Tripped,Resulting in Loss of Voltage to Motor Control Ctr 89B.Trip Caused by Noise Entering Unused Static Switch Open Sensing Circuit
page: https://kanterella.com/05000271/LER-2D1976-2D025-2D03-2C_/3L-3Aon_760813-2CExide_250_Kva_Uninterruptible_Power_Supply_Output_Breaker_Tripped-2CResulting_in_Loss_of_Voltage_to_Motor_Control_Ctr_89B.Tri…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1976-025-03, /3L:on 760813,Exide 250 Kva Uninterruptible Power Supply Output Breaker Tripped,Resulting in Loss of Voltage to Motor Control Ctr 89B.Trip Caused by Noise Entering Unused Static Switch Open Sensing Circuit

03L-0:on 831007,heat Damaged Snubber Discovered on Piping Between Pressurizer & Code Safety Valve.Caused by Lack of Oil in Reservoir on Snubber.Modified Reservoir Design Implemented.Update Expected
type: Subject
label: 05000317/LER-1983-056-03, /03L-0:on 831007,heat Damaged Snubber Discovered on Piping Between Pressurizer & Code Safety Valve.Caused by Lack of Oil in Reservoir on Snubber.Modified Reservoir Design Implemented.Update Expected
page: https://kanterella.com/05000317/LER-2D1983-2D056-2D03-2C_/03L-2D0-3Aon_831007-2Cheat_Damaged_Snubber_Discovered_on_Piping_Between_Pressurizer_-26_Code_Safety_Valve.Caused_by_Lack_of_Oil_in_Reservoir_o…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000317/LER-1983-056-03, /03L-0:on 831007,heat Damaged Snubber Discovered on Piping Between Pressurizer & Code Safety Valve.Caused by Lack of Oil in Reservoir on Snubber.Modified Reservoir Design Implemented.Update Expected

05000387/LER-1983-108-03, /03L-0:on 830726,operations Personnel Received Drywell Floor Drain Sump High Level Alarm.Caused by Crossed Wires.Wires Restored to Proper Postions
type: Subject
page: https://kanterella.com/05000387/LER-2D1983-2D108-2D03-2C_/03L-2D0-3Aon_830726-2Coperations_Personnel_Received_Drywell_Floor_Drain_Sump_High_Level_Alarm.Caused_by_Crossed_Wires.Wires_Restored_to_Proper…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-108-03, /03L-0:on 830726,operations Personnel Received Drywell Floor Drain Sump High Level Alarm.Caused by Crossed Wires.Wires Restored to Proper Postions

763W:on 760412,five Reed Relays Failed.Four Reed Relays Permit Sequential Selection & Withdrawal of Control Rods & One Permits Two Control Rod Simultaneous Withdrawal. Caused by CP Claire Reed Relay Contact Failure
type: Subject
label: 05000260/LER-1950-260-763, /763W:on 760412,five Reed Relays Failed.Four Reed Relays Permit Sequential Selection & Withdrawal of Control Rods & One Permits Two Control Rod Simultaneous Withdrawal. Caused by CP Claire Reed Relay Contact Failure
page: https://kanterella.com/05000260/LER-2D1950-2D260-2D763-2C_/763W-3Aon_760412-2Cfive_Reed_Relays_Failed.Four_Reed_Relays_Permit_Sequential_Selection_-26_Withdrawal_of_Control_Rods_-26_One_Permits_Two_Co…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000260/LER-1950-260-763, /763W:on 760412,five Reed Relays Failed.Four Reed Relays Permit Sequential Selection & Withdrawal of Control Rods & One Permits Two Control Rod Simultaneous Withdrawal. Caused by CP Claire Reed Relay Contact Failure

05000259/LER-1950-259-763, /763T:on 760213.Condition Determined Not to Be Ro
type: Subject
page: https://kanterella.com/05000259/LER-2D1950-2D259-2D763-2C_/763T-3Aon_760213.Condition_Determined_Not_to_Be_Ro
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000259/LER-1950-259-763, /763T:on 760213.Condition Determined Not to Be Ro

05000265/LER-1976-005-03, /03L-0:on 760519,during Monthly MSIV Surveillance Test,Failed to Receive Channel a RPS Trip.Caused by Improper Valve Closure Test Circuit Reset.Test Switch Held Longer
type: Subject
page: https://kanterella.com/05000265/LER-2D1976-2D005-2D03-2C_/03L-2D0-3Aon_760519-2Cduring_Monthly_MSIV_Surveillance_Test-2CFailed_to_Receive_Channel_a_RPS_Trip.Caused_by_Improper_Valve_Closure_Test_Circu…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-005-03, /03L-0:on 760519,during Monthly MSIV Surveillance Test,Failed to Receive Channel a RPS Trip.Caused by Improper Valve Closure Test Circuit Reset.Test Switch Held Longer

03L-0:on 760427,during Routine Monthly Surveillance on Ps 2-1469,ECCS Fill Sys Discharge Header Pressure Switch Found to Trip Beyond Tech Spec Limit.Caused by Instrument Drift.Pressure Switch Reset
type: Subject
label: 05000265/LER-1976-006-03, /03L-0:on 760427,during Routine Monthly Surveillance on Ps 2-1469,ECCS Fill Sys Discharge Header Pressure Switch Found to Trip Beyond Tech Spec Limit.Caused by Instrument Drift.Pressure Switch Reset
page: https://kanterella.com/05000265/LER-2D1976-2D006-2D03-2C_/03L-2D0-3Aon_760427-2Cduring_Routine_Monthly_Surveillance_on_Ps_2-2D1469-2CECCS_Fill_Sys_Discharge_Header_Pressure_Switch_Found_to_Trip_Beyond…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-006-03, /03L-0:on 760427,during Routine Monthly Surveillance on Ps 2-1469,ECCS Fill Sys Discharge Header Pressure Switch Found to Trip Beyond Tech Spec Limit.Caused by Instrument Drift.Pressure Switch Reset

05000265/LER-1976-003-03, /03L-0:on 760319,outboard MSIV AO-2-203-2C Failed to Close & Inboard Gave Open & Closed Indications.Caused by Foreign Matl in Pilot Assembly.Double Indication Cleared
type: Subject
page: https://kanterella.com/05000265/LER-2D1976-2D003-2D03-2C_/03L-2D0-3Aon_760319-2Coutboard_MSIV_AO-2D2-2D203-2D2C_Failed_to_Close_-26_Inboard_Gave_Open_-26_Closed_Indications.Caused_by_Foreign_Matl_in_P…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-003-03, /03L-0:on 760319,outboard MSIV AO-2-203-2C Failed to Close & Inboard Gave Open & Closed Indications.Caused by Foreign Matl in Pilot Assembly.Double Indication Cleared

760924 Forwarding Ltr
type: Subject
label: 05000265/LER-1976-012-01, /01T-0:on 760825,pressure Switch Ps 2-1001-90B Found Valved Out.Caused by Switch Being Left Isolated After Completion of Prior Month Surveilance testing.W/760924 Forwarding Ltr
page: https://kanterella.com/05000265/LER-2D1976-2D012-2D01-2C_/01T-2D0-3Aon_760825-2Cpressure_Switch_Ps_2-2D1001-2D90B_Found_Valved_Out.Caused_by_Switch_Being_Left_Isolated_After_Completion_of_Prior_Month_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-012-01, /01T-0:on 760825,pressure Switch Ps 2-1001-90B Found Valved Out.Caused by Switch Being Left Isolated After Completion of Prior Month Surveilance testing.W/760924 Forwarding Ltr

03L-0:on 760527,while Performing Main Steamline High Flow Functional Test,Differential Pressure Indicating Switch 2-261-2S Tripped Beyond Tech Spec Limit.No Cause Stated.Switch Recalibr
type: Subject
label: 05000265/LER-1976-007-03, /03L-0:on 760527,while Performing Main Steamline High Flow Functional Test,Differential Pressure Indicating Switch 2-261-2S Tripped Beyond Tech Spec Limit.No Cause Stated.Switch Recalibr
page: https://kanterella.com/05000265/LER-2D1976-2D007-2D03-2C_/03L-2D0-3Aon_760527-2Cwhile_Performing_Main_Steamline_High_Flow_Functional_Test-2CDifferential_Pressure_Indicating_Switch_2-2D261-2D2S_Tripped…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-007-03, /03L-0:on 760527,while Performing Main Steamline High Flow Functional Test,Differential Pressure Indicating Switch 2-261-2S Tripped Beyond Tech Spec Limit.No Cause Stated.Switch Recalibr

760430 Forwarding Ltr
type: Subject
label: 05000254/LER-1976-017-03, L-0:on 760427,while Performing MSIV Surveillance, Duel Indication Received for Valves AO 1-203-1B & AO 1-203-1D.Caused by Switches Being Out of Alignment.Minor Air Leak repaired.W/760430 Forwarding Ltr
page: https://kanterella.com/05000254/LER-2D1976-2D017-2D03-2C_L-2D0-3Aon_760427-2Cwhile_Performing_MSIV_Surveillance-2C_Duel_Indication_Received_for_Valves_AO_1-2D203-2D1B_-26_AO_1-2D203-2D1D.Caused_by_Swi…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000254/LER-1976-017-03, L-0:on 760427,while Performing MSIV Surveillance, Duel Indication Received for Valves AO 1-203-1B & AO 1-203-1D.Caused by Switches Being Out of Alignment.Minor Air Leak repaired.W/760430 Forwarding Ltr

Torus Vacuum Breaker AO 2-1601-33A Received.Caused by Failed Micro Switch Type BAG1-2RN Limit switch.W760726 Forwarding Ltr
type: Subject
label: 05000265/LER-1976-009-01, /01L-01:on 760627,during Surveillance Test,Dual Indication for Drywell/Torus Vacuum Breaker AO 2-1601-33A Received.Caused by Failed Micro Switch Type BAG1-2RN Limit switch.W760726 Forwarding Ltr
page: https://kanterella.com/05000265/LER-2D1976-2D009-2D01-2C_/01L-2D01-3Aon_760627-2Cduring_Surveillance_Test-2CDual_Indication_for_Drywell/Torus_Vacuum_Breaker_AO_2-2D1601-2D33A_Received.Caused_by_Failed…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-009-01, /01L-01:on 760627,during Surveillance Test,Dual Indication for Drywell/Torus Vacuum Breaker AO 2-1601-33A Received.Caused by Failed Micro Switch Type BAG1-2RN Limit switch.W760726 Forwarding Ltr

761230 Forwa
type: Subject
label: 05000265/LER-1976-017-03, LER 017/03L-0:on 761203,Grinnell Corp Snubber 4755 on RCIC Steam Supply Piping Found to Have Empty Oil Reservoir. Caused by Leakage Through Reservoir End Gap Gaskets.Snubber Repaired & Reservoir Refilled w/oil.W/761230 Forwa
page: https://kanterella.com/05000265/LER-2D1976-2D017-2D03-2C_LER_017/03L-2D0-3Aon_761203-2CGrinnell_Corp_Snubber_4755_on_RCIC_Steam_Supply_Piping_Found_to_Have_Empty_Oil_Reservoir._Caused_by_Leakage_Throu…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-017-03, LER 017/03L-0:on 761203,Grinnell Corp Snubber 4755 on RCIC Steam Supply Piping Found to Have Empty Oil Reservoir. Caused by Leakage Through Reservoir End Gap Gaskets.Snubber Repaired & Reservoir Refilled w/oil.W/761230 Forwa

760423 Forwarding Ltr
type: Subject
label: 05000254/LER-1976-015-03, /03L-0:on 760325,standby Liquid Control Sys Pump B Had Discharge Pressure Fluctuations & Excessive Pump Noise.Caused by Setpoint Drift of Relief Valve B & Leaking of Internal Check valves.W/760423 Forwarding Ltr
page: https://kanterella.com/05000254/LER-2D1976-2D015-2D03-2C_/03L-2D0-3Aon_760325-2Cstandby_Liquid_Control_Sys_Pump_B_Had_Discharge_Pressure_Fluctuations_-26_Excessive_Pump_Noise.Caused_by_Setpoint_Drift_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000254/LER-1976-015-03, /03L-0:on 760325,standby Liquid Control Sys Pump B Had Discharge Pressure Fluctuations & Excessive Pump Noise.Caused by Setpoint Drift of Relief Valve B & Leaking of Internal Check valves.W/760423 Forwarding Ltr

05000265/LER-1976-011-03, /03L-01:on 760717,four Drywell Pressure Switches Rendered Inoperable.Caused by Blocked Sensing Line.Line Blown Clear W/Instrument air.W/760820 Forwarding Ltr
type: Subject
page: https://kanterella.com/05000265/LER-2D1976-2D011-2D03-2C_/03L-2D01-3Aon_760717-2Cfour_Drywell_Pressure_Switches_Rendered_Inoperable.Caused_by_Blocked_Sensing_Line.Line_Blown_Clear_W/Instrument_air.W/7…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-011-03, /03L-01:on 760717,four Drywell Pressure Switches Rendered Inoperable.Caused by Blocked Sensing Line.Line Blown Clear W/Instrument air.W/760820 Forwarding Ltr

760729 Forwarding Ltr
type: Subject
label: 05000254/LER-1976-020-03, /03L-0:on 760701,loss of Indication & Operability Occurred on Containment Spray Loop B Outboard Valve MO-1-1101-23B.Caused by Loose hold-down Bolts.Bolts tightened.W/760729 Forwarding Ltr
page: https://kanterella.com/05000254/LER-2D1976-2D020-2D03-2C_/03L-2D0-3Aon_760701-2Closs_of_Indication_-26_Operability_Occurred_on_Containment_Spray_Loop_B_Outboard_Valve_MO-2D1-2D1101-2D23B.Caused_by_Loo…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000254/LER-1976-020-03, /03L-0:on 760701,loss of Indication & Operability Occurred on Containment Spray Loop B Outboard Valve MO-1-1101-23B.Caused by Loose hold-down Bolts.Bolts tightened.W/760729 Forwarding Ltr

760621 Forwarding Ltr
type: Subject
label: 05000000/LER-1976-018-03, /03L-0:on 760522,snubber 4439 RHR Sys to Fuel Pool Sys Cross Tie Line Found to Have Empty Oil Reservoir Due to Leaking Reservoir Shaft Seal.Caused by Equipment Failure.Snubber Internals replaced.W/760621 Forwarding Ltr
page: https://kanterella.com/05000000/LER-2D1976-2D018-2D03-2C_/03L-2D0-3Aon_760522-2Csnubber_4439_RHR_Sys_to_Fuel_Pool_Sys_Cross_Tie_Line_Found_to_Have_Empty_Oil_Reservoir_Due_to_Leaking_Reservoir_Shaft_Se…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000000/LER-1976-018-03, /03L-0:on 760522,snubber 4439 RHR Sys to Fuel Pool Sys Cross Tie Line Found to Have Empty Oil Reservoir Due to Leaking Reservoir Shaft Seal.Caused by Equipment Failure.Snubber Internals replaced.W/760621 Forwarding Ltr

760415 Forwarding Ltr
type: Subject
label: 05000254/LER-1976-013-03, /03L-0:on 760317,diesel Generator 1/2 Out of Svc Too Long for Preventive Maint.Caused by Commuication Problem Between Operating & Maint Depts.Precaution to Be Added to Station procedure.W/760415 Forwarding Ltr
page: https://kanterella.com/05000254/LER-2D1976-2D013-2D03-2C_/03L-2D0-3Aon_760317-2Cdiesel_Generator_1/2_Out_of_Svc_Too_Long_for_Preventive_Maint.Caused_by_Commuication_Problem_Between_Operating_-26_Maint…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000254/LER-1976-013-03, /03L-0:on 760317,diesel Generator 1/2 Out of Svc Too Long for Preventive Maint.Caused by Commuication Problem Between Operating & Maint Depts.Precaution to Be Added to Station procedure.W/760415 Forwarding Ltr

760810 Forwarding Ltr
type: Subject
label: 05000265/LER-1976-010-03, /03L-0:on 760712,suppression Chamber Purge Valve AO 2-1601-56 Failed to Close During Surveillance Testing. Caused by Stuck Solenoid Valve SO 2-1601-65.Solenoid cleaned.W/760810 Forwarding Ltr
page: https://kanterella.com/05000265/LER-2D1976-2D010-2D03-2C_/03L-2D0-3Aon_760712-2Csuppression_Chamber_Purge_Valve_AO_2-2D1601-2D56_Failed_to_Close_During_Surveillance_Testing._Caused_by_Stuck_Solenoid_V…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-010-03, /03L-0:on 760712,suppression Chamber Purge Valve AO 2-1601-56 Failed to Close During Surveillance Testing. Caused by Stuck Solenoid Valve SO 2-1601-65.Solenoid cleaned.W/760810 Forwarding Ltr

05000265/LER-1976-015-03, /03L:on 761012,five RCIC Turbine Area High Temp Switches Tripped at Temps Exceeding 200 F.Caused by Instrument Setpoint Drift.Switches recalibr.W/761110 Forwarding Ltr
type: Subject
page: https://kanterella.com/05000265/LER-2D1976-2D015-2D03-2C_/03L-3Aon_761012-2Cfive_RCIC_Turbine_Area_High_Temp_Switches_Tripped_at_Temps_Exceeding_200_F.Caused_by_Instrument_Setpoint_Drift.Switches_reca…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000265/LER-1976-015-03, /03L:on 761012,five RCIC Turbine Area High Temp Switches Tripped at Temps Exceeding 200 F.Caused by Instrument Setpoint Drift.Switches recalibr.W/761110 Forwarding Ltr

05000247/LER-1950-247-01, /01L:on 750829,during Normal Operation,Two Charging Pumps Became Inoperable.Caused by Excessive Seal Leakage.Design Mods investigated.W/750926 Forwarding Ltr
type: Subject
page: https://kanterella.com/05000247/LER-2D1950-2D247-2D01-2C_/01L-3Aon_750829-2Cduring_Normal_Operation-2CTwo_Charging_Pumps_Became_Inoperable.Caused_by_Excessive_Seal_Leakage.Design_Mods_investigated.W/7…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000247/LER-1950-247-01, /01L:on 750829,during Normal Operation,Two Charging Pumps Became Inoperable.Caused by Excessive Seal Leakage.Design Mods investigated.W/750926 Forwarding Ltr

05000220/LER-1976-036, :on 761015,lo-lo-lo Reactor Water Level Switch RE-18A Failed to Provide Trip at Indicated Inches.Caused by Apparent Setpoint Drift.Switch Inspected & Recalibr.W/
type: Subject
page: https://kanterella.com/05000220/LER-2D1976-2D036-2C_-3Aon_761015-2Clo-2Dlo-2Dlo_Reactor_Water_Level_Switch_RE-2D18A_Failed_to_Provide_Trip_at_Indicated_Inches.Caused_by_Apparent_Setpoint_Drift.Switch_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000220/LER-1976-036, :on 761015,lo-lo-lo Reactor Water Level Switch RE-18A Failed to Provide Trip at Indicated Inches.Caused by Apparent Setpoint Drift.Switch Inspected & Recalibr.W/

01T:on 750408,post-accident Filter Charcoal Samples Showed Filter a Efficiency of 99.4- While B Above Criteria of 99.9-.Caused by Charcoal Aging.Tech Spec Change Considered to Replace Criteria of 99.9-
type: Subject
label: 05000244/LER-1975-008-01, /01T:on 750408,post-accident Filter Charcoal Samples Showed Filter a Efficiency of 99.4% While B Above Criteria of 99.9%.Caused by Charcoal Aging.Tech Spec Change Considered to Replace Criteria of 99.9%
page: https://kanterella.com/05000244/LER-2D1975-2D008-2D01-2C_/01T-3Aon_750408-2Cpost-2Daccident_Filter_Charcoal_Samples_Showed_Filter_a_Efficiency_of_99.4-_While_B_Above_Criteria_of_99.9-.Caused_by_Charco…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000244/LER-1975-008-01, /01T:on 750408,post-accident Filter Charcoal Samples Showed Filter a Efficiency of 99.4% While B Above Criteria of 99.9%.Caused by Charcoal Aging.Tech Spec Change Considered to Replace Criteria of 99.9%

03L-0:on 831107,fuel Zone Water Level Monitoring Accurex Sys Found in Idle State.Cause Unknown Suspected That Stop Signal Received Stopping Program.Accurex Logger Restarted & Addl Surveillance Performed
type: Subject
label: 05000220/LER-1983-036-03, /03L-0:on 831107,fuel Zone Water Level Monitoring Accurex Sys Found in Idle State.Cause Unknown Suspected That Stop Signal Received Stopping Program.Accurex Logger Restarted & Addl Surveillance Performed
page: https://kanterella.com/05000220/LER-2D1983-2D036-2D03-2C_/03L-2D0-3Aon_831107-2Cfuel_Zone_Water_Level_Monitoring_Accurex_Sys_Found_in_Idle_State.Cause_Unknown_Suspected_That_Stop_Signal_Received_Stopp…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000220/LER-1983-036-03, /03L-0:on 831107,fuel Zone Water Level Monitoring Accurex Sys Found in Idle State.Cause Unknown Suspected That Stop Signal Received Stopping Program.Accurex Logger Restarted & Addl Surveillance Performed

Diesel While Operating at 900 Rpm.Caused by Air Leak in Solenoid Valve.New Valve Installed
type: Subject
label: 05000260/LER-1983-062-03, /03L-0:on 831004,while Performing Surveillance Instruction 4.9.A.1(a),second Starter on Diesel Generator C Engaged W/Diesel While Operating at 900 Rpm.Caused by Air Leak in Solenoid Valve.New Valve Installed
page: https://kanterella.com/05000260/LER-2D1983-2D062-2D03-2C_/03L-2D0-3Aon_831004-2Cwhile_Performing_Surveillance_Instruction_4.9.A.1-28a-29-2Csecond_Starter_on_Diesel_Generator_C_Engaged_W/Diesel_While_O…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000260/LER-1983-062-03, /03L-0:on 831004,while Performing Surveillance Instruction 4.9.A.1(a),second Starter on Diesel Generator C Engaged W/Diesel While Operating at 900 Rpm.Caused by Air Leak in Solenoid Valve.New Valve Installed

03L-0:on 830217,Unit 2 Fire Detector Electrical Panel 2L-204 Failed Surveillance Test & on 830222,Unit 3 Panel 3L-204 Failed Same Test.Caused by Disconnected Supervisory Circuits as Result of Mods
type: Subject
label: 05000361/LER-1983-094-03, /03L-0:on 830217,Unit 2 Fire Detector Electrical Panel 2L-204 Failed Surveillance Test & on 830222,Unit 3 Panel 3L-204 Failed Same Test.Caused by Disconnected Supervisory Circuits as Result of Mods
page: https://kanterella.com/05000361/LER-2D1983-2D094-2D03-2C_/03L-2D0-3Aon_830217-2CUnit_2_Fire_Detector_Electrical_Panel_2L-2D204_Failed_Surveillance_Test_-26_on_830222-2CUnit_3_Panel_3L-2D204_Failed_Sam…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000361/LER-1983-094-03, /03L-0:on 830217,Unit 2 Fire Detector Electrical Panel 2L-204 Failed Surveillance Test & on 830222,Unit 3 Panel 3L-204 Failed Same Test.Caused by Disconnected Supervisory Circuits as Result of Mods

05000362/LER-1983-070-03, /03L-0:on 830923,control Element Assembly Calculator 1 Declared Inoperable When Control Element Assembly 15 Indicated Spurious Rod Movement.Caused by Failed Circuit Board
type: Subject
page: https://kanterella.com/05000362/LER-2D1983-2D070-2D03-2C_/03L-2D0-3Aon_830923-2Ccontrol_Element_Assembly_Calculator_1_Declared_Inoperable_When_Control_Element_Assembly_15_Indicated_Spurious_Rod_Moveme…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000362/LER-1983-070-03, /03L-0:on 830923,control Element Assembly Calculator 1 Declared Inoperable When Control Element Assembly 15 Indicated Spurious Rod Movement.Caused by Failed Circuit Board

13X-0:on 831204,during Surveillance Testing, Undervoltage Trip Devices of Reactor Trip Breakers 1 & 4 Exhibited Scattered & Unacceptable Response Times.Reactor Trip Breakers Replaced
type: Subject
label: 05000361/LER-1983-153-13, /13X-0:on 831204,during Surveillance Testing, Undervoltage Trip Devices of Reactor Trip Breakers 1 & 4 Exhibited Scattered & Unacceptable Response Times.Reactor Trip Breakers Replaced
page: https://kanterella.com/05000361/LER-2D1983-2D153-2D13-2C_/13X-2D0-3Aon_831204-2Cduring_Surveillance_Testing-2C_Undervoltage_Trip_Devices_of_Reactor_Trip_Breakers_1_-26_4_Exhibited_Scattered_-26_Unacce…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000361/LER-1983-153-13, /13X-0:on 831204,during Surveillance Testing, Undervoltage Trip Devices of Reactor Trip Breakers 1 & 4 Exhibited Scattered & Unacceptable Response Times.Reactor Trip Breakers Replaced

03L-0:on 830917 & 23,control Element Assembly Calculator Declared Inoperable Due to Spurious Position from Control Element Assembly 20.Caused by Defective Board & Connector.Equipment Replaced
type: Subject
label: 05000361/LER-1983-124-03, /03L-0:on 830917 & 23,control Element Assembly Calculator Declared Inoperable Due to Spurious Position from Control Element Assembly 20.Caused by Defective Board & Connector.Equipment Replaced
page: https://kanterella.com/05000361/LER-2D1983-2D124-2D03-2C_/03L-2D0-3Aon_830917_-26_23-2Ccontrol_Element_Assembly_Calculator_Declared_Inoperable_Due_to_Spurious_Position_from_Control_Element_Assembly_20…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000361/LER-1983-124-03, /03L-0:on 830917 & 23,control Element Assembly Calculator Declared Inoperable Due to Spurious Position from Control Element Assembly 20.Caused by Defective Board & Connector.Equipment Replaced

Unit 2 in Mode 1 & Unit 3 in Mode 3,insp of Electrical Penetrations Revealed Two Holes in Penetration Seals in Auxiliary Bldg Control Area.Caused by Procedural Deficiencies During Const
type: Subject
label: 05000361/LER-1983-123-03, /03L-0:on 830913,w/Unit 2 in Mode 1 & Unit 3 in Mode 3,insp of Electrical Penetrations Revealed Two Holes in Penetration Seals in Auxiliary Bldg Control Area.Caused by Procedural Deficiencies During Const
page: https://kanterella.com/05000361/LER-2D1983-2D123-2D03-2C_/03L-2D0-3Aon_830913-2Cw/Unit_2_in_Mode_1_-26_Unit_3_in_Mode_3-2Cinsp_of_Electrical_Penetrations_Revealed_Two_Holes_in_Penetration_Seals_in_Aux…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000361/LER-1983-123-03, /03L-0:on 830913,w/Unit 2 in Mode 1 & Unit 3 in Mode 3,insp of Electrical Penetrations Revealed Two Holes in Penetration Seals in Auxiliary Bldg Control Area.Caused by Procedural Deficiencies During Const

03L-0:on 830828,Group 6 Control Element Assemblies (CEA) Inserted to Control Axial Shape Index. Reactor Coolant Cold Leg Temp Observed Below Limits.Caused by Effects of Xenon build-in & CEA Insertion
type: Subject
label: 05000361/LER-1983-119-03, /03L-0:on 830828,Group 6 Control Element Assemblies (CEA) Inserted to Control Axial Shape Index. Reactor Coolant Cold Leg Temp Observed Below Limits.Caused by Effects of Xenon build-in & CEA Insertion
page: https://kanterella.com/05000361/LER-2D1983-2D119-2D03-2C_/03L-2D0-3Aon_830828-2CGroup_6_Control_Element_Assemblies_-28CEA-29_Inserted_to_Control_Axial_Shape_Index._Reactor_Coolant_Cold_Leg_Temp_Observ…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000361/LER-1983-119-03, /03L-0:on 830828,Group 6 Control Element Assemblies (CEA) Inserted to Control Axial Shape Index. Reactor Coolant Cold Leg Temp Observed Below Limits.Caused by Effects of Xenon build-in & CEA Insertion

05000387/LER-1983-125-03, /03L-0:on 830903,average Drywell Air Temp Exceeded Tech Specs by 1 Degree.Cause Not Stated.Plant Startup & Heatup Procedures Revised
type: Subject
page: https://kanterella.com/05000387/LER-2D1983-2D125-2D03-2C_/03L-2D0-3Aon_830903-2Caverage_Drywell_Air_Temp_Exceeded_Tech_Specs_by_1_Degree.Cause_Not_Stated.Plant_Startup_-26_Heatup_Procedures_Revised
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-125-03, /03L-0:on 830903,average Drywell Air Temp Exceeded Tech Specs by 1 Degree.Cause Not Stated.Plant Startup & Heatup Procedures Revised

Low Flow.Caused by Apparent Unauthorized Valve Manipulation.Valve Opened & Proper Flow Restored
type: Subject
label: 05000361/LER-1983-104-03, /03L-0:on 830809,during Routine Visual Insp,Purge/ Vent Stack Monitor 2RI-7865 Discovered W/Low Flow.Caused by Apparent Unauthorized Valve Manipulation.Valve Opened & Proper Flow Restored
page: https://kanterella.com/05000361/LER-2D1983-2D104-2D03-2C_/03L-2D0-3Aon_830809-2Cduring_Routine_Visual_Insp-2CPurge/_Vent_Stack_Monitor_2RI-2D7865_Discovered_W/Low_Flow.Caused_by_Apparent_Unauthorized_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000361/LER-1983-104-03, /03L-0:on 830809,during Routine Visual Insp,Purge/ Vent Stack Monitor 2RI-7865 Discovered W/Low Flow.Caused by Apparent Unauthorized Valve Manipulation.Valve Opened & Proper Flow Restored

01T-0:on 830822,discovered That,Using Conservative Interpretations,Inoperable LPI Snubber Noted. Snubber Not Made Operable within 72 H.Caused by Component Failure & Personnel Error.Snubber Replaced
type: Subject
label: 05000270/LER-1983-009-01, /01T-0:on 830822,discovered That,Using Conservative Interpretations,Inoperable LPI Snubber Noted. Snubber Not Made Operable within 72 H.Caused by Component Failure & Personnel Error.Snubber Replaced
page: https://kanterella.com/05000270/LER-2D1983-2D009-2D01-2C_/01T-2D0-3Aon_830822-2Cdiscovered_That-2CUsing_Conservative_Interpretations-2CInoperable_LPI_Snubber_Noted._Snubber_Not_Made_Operable_within_72…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000270/LER-1983-009-01, /01T-0:on 830822,discovered That,Using Conservative Interpretations,Inoperable LPI Snubber Noted. Snubber Not Made Operable within 72 H.Caused by Component Failure & Personnel Error.Snubber Replaced

03L-0:on 830725,while Performing Surveillance Instruction 4.2.B-60,core Spray Ne Room Cooler Fan Would Not Operate.Caused by Tripped Overload Relays in Full Voltage Nonreversing Magnetic Starter.Relays Replaced
type: Subject
label: 05000260/LER-1983-049-03, /03L-0:on 830725,while Performing Surveillance Instruction 4.2.B-60,core Spray Ne Room Cooler Fan Would Not Operate.Caused by Tripped Overload Relays in Full Voltage Nonreversing Magnetic Starter.Relays Replaced
page: https://kanterella.com/05000260/LER-2D1983-2D049-2D03-2C_/03L-2D0-3Aon_830725-2Cwhile_Performing_Surveillance_Instruction_4.2.B-2D60-2Ccore_Spray_Ne_Room_Cooler_Fan_Would_Not_Operate.Caused_by_Tripped…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000260/LER-1983-049-03, /03L-0:on 830725,while Performing Surveillance Instruction 4.2.B-60,core Spray Ne Room Cooler Fan Would Not Operate.Caused by Tripped Overload Relays in Full Voltage Nonreversing Magnetic Starter.Relays Replaced

01T-0:on 831222,reactor Protection Sys Channels a & C for Reactor Coolant Flow Inoperable.Caused by Erratic Indication & Procedure Inadequacy.Transmitter Repaired & New Flow Setpoint Inserted
type: Subject
label: 05000317/LER-1983-072-01, /01T-0:on 831222,reactor Protection Sys Channels a & C for Reactor Coolant Flow Inoperable.Caused by Erratic Indication & Procedure Inadequacy.Transmitter Repaired & New Flow Setpoint Inserted
page: https://kanterella.com/05000317/LER-2D1983-2D072-2D01-2C_/01T-2D0-3Aon_831222-2Creactor_Protection_Sys_Channels_a_-26_C_for_Reactor_Coolant_Flow_Inoperable.Caused_by_Erratic_Indication_-26_Procedure_I…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000317/LER-1983-072-01, /01T-0:on 831222,reactor Protection Sys Channels a & C for Reactor Coolant Flow Inoperable.Caused by Erratic Indication & Procedure Inadequacy.Transmitter Repaired & New Flow Setpoint Inserted

05000387/LER-1983-052-03, /03L-0:on 830325,during Surveillance Test,Creoass Train a Tripped.Caused by Fan Belts Coming Off Fan Pulley. Belts Replaced & Bearings & Fan Pulley Realigned
type: Subject
page: https://kanterella.com/05000387/LER-2D1983-2D052-2D03-2C_/03L-2D0-3Aon_830325-2Cduring_Surveillance_Test-2CCreoass_Train_a_Tripped.Caused_by_Fan_Belts_Coming_Off_Fan_Pulley._Belts_Replaced_-26_Bearing…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-052-03, /03L-0:on 830325,during Surveillance Test,Creoass Train a Tripped.Caused by Fan Belts Coming Off Fan Pulley. Belts Replaced & Bearings & Fan Pulley Realigned

01T-0:on 831226,while Performing Routine Surveillance,Level Indicators FS-1-LI & FS-2-LI & Sensing Lines for Fire Svc Tanks Found Frozen.Caused by Unusually Cold Weather.Water Added to Tanks
type: Subject
label: 05000302/LER-1983-063-01, /01T-0:on 831226,while Performing Routine Surveillance,Level Indicators FS-1-LI & FS-2-LI & Sensing Lines for Fire Svc Tanks Found Frozen.Caused by Unusually Cold Weather.Water Added to Tanks
page: https://kanterella.com/05000302/LER-2D1983-2D063-2D01-2C_/01T-2D0-3Aon_831226-2Cwhile_Performing_Routine_Surveillance-2CLevel_Indicators_FS-2D1-2DLI_-26_FS-2D2-2DLI_-26_Sensing_Lines_for_Fire_Svc_Tank…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000302/LER-1983-063-01, /01T-0:on 831226,while Performing Routine Surveillance,Level Indicators FS-1-LI & FS-2-LI & Sensing Lines for Fire Svc Tanks Found Frozen.Caused by Unusually Cold Weather.Water Added to Tanks

03L-0:on 830901,reactor Bldg Zone III Ventilation Tripped,Causing short-duration Loss of 0.25 Inches.Caused by Momentary,Spurious Signal.Investigation Revealed Absence of Zone III Isolation Signal
type: Subject
label: 05000387/LER-1983-123-03, /03L-0:on 830901,reactor Bldg Zone III Ventilation Tripped,Causing short-duration Loss of 0.25 Inches.Caused by Momentary,Spurious Signal.Investigation Revealed Absence of Zone III Isolation Signal
page: https://kanterella.com/05000387/LER-2D1983-2D123-2D03-2C_/03L-2D0-3Aon_830901-2Creactor_Bldg_Zone_III_Ventilation_Tripped-2CCausing_short-2Dduration_Loss_of_0.25_Inches.Caused_by_Momentary-2CSpurious_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-123-03, /03L-0:on 830901,reactor Bldg Zone III Ventilation Tripped,Causing short-duration Loss of 0.25 Inches.Caused by Momentary,Spurious Signal.Investigation Revealed Absence of Zone III Isolation Signal

Procedure
type: Subject
label: 05000387/LER-1983-127-03, /03L-0:on 830909,during Surveillance of Standby Liquid Control Sys,Available Weight of Sodium Pentaborate (5,250 Lbs) Discovered Below Limit of 5,500 Lbs.Caused by Sys Configuration at Odds W/Procedure
page: https://kanterella.com/05000387/LER-2D1983-2D127-2D03-2C_/03L-2D0-3Aon_830909-2Cduring_Surveillance_of_Standby_Liquid_Control_Sys-2CAvailable_Weight_of_Sodium_Pentaborate_-285-2C250_Lbs-29_Discovered_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-127-03, /03L-0:on 830909,during Surveillance of Standby Liquid Control Sys,Available Weight of Sodium Pentaborate (5,250 Lbs) Discovered Below Limit of 5,500 Lbs.Caused by Sys Configuration at Odds W/Procedure

03L-0:on 830613,while in Mode 1,two Steam Leaks Observed in Line to turbine-driven Auxiliary Feedwater Pump 2P-140.Caused by Leaking Plug on Turbine Stop Valve & Valve Seating Surfaces.Plug Replaced
type: Subject
label: 05000361/LER-1983-070-03, /03L-0:on 830613,while in Mode 1,two Steam Leaks Observed in Line to turbine-driven Auxiliary Feedwater Pump 2P-140.Caused by Leaking Plug on Turbine Stop Valve & Valve Seating Surfaces.Plug Replaced
page: https://kanterella.com/05000361/LER-2D1983-2D070-2D03-2C_/03L-2D0-3Aon_830613-2Cwhile_in_Mode_1-2Ctwo_Steam_Leaks_Observed_in_Line_to_turbine-2Ddriven_Auxiliary_Feedwater_Pump_2P-2D140.Caused_by_Leaki…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000361/LER-1983-070-03, /03L-0:on 830613,while in Mode 1,two Steam Leaks Observed in Line to turbine-driven Auxiliary Feedwater Pump 2P-140.Caused by Leaking Plug on Turbine Stop Valve & Valve Seating Surfaces.Plug Replaced

LER-1983-036-03, Fuse Supplying Topaz Inverter Blew Several Times,Affecting Operation of RCIC Instrumentation & Speed Control Circuitry at Remote Shutdown Panel.Cause Unknown.Recorders Installed
type: Subject
label: 05000387/LER-1983-036-03, Fuse Supplying Topaz Inverter Blew Several Times,Affecting Operation of RCIC Instrumentation & Speed Control Circuitry at Remote Shutdown Panel.Cause Unknown.Recorders Installed
page: https://kanterella.com/05000387/LER-2D1983-2D036-2D03-2C_Fuse_Supplying_Topaz_Inverter_Blew_Several_Times-2CAffecting_Operation_of_RCIC_Instrumentation_-26_Speed_Control_Circuitry_at_Remote_Shutdown_P…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-036-03, Fuse Supplying Topaz Inverter Blew Several Times,Affecting Operation of RCIC Instrumentation & Speed Control Circuitry at Remote Shutdown Panel.Cause Unknown.Recorders Installed

03L-0:on 830712,while in Mode 4,condenser Air Ejector Monitor 3RT-7870 Discovered to Have Low Flow During Routine Daily Surveillance & Declared Inoperable.Caused by Valve Manipulation by Unauthorized Personnel
type: Subject
label: 05000362/LER-1983-051-03, /03L-0:on 830712,while in Mode 4,condenser Air Ejector Monitor 3RT-7870 Discovered to Have Low Flow During Routine Daily Surveillance & Declared Inoperable.Caused by Valve Manipulation by Unauthorized Personnel
page: https://kanterella.com/05000362/LER-2D1983-2D051-2D03-2C_/03L-2D0-3Aon_830712-2Cwhile_in_Mode_4-2Ccondenser_Air_Ejector_Monitor_3RT-2D7870_Discovered_to_Have_Low_Flow_During_Routine_Daily_Surveillance…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000362/LER-1983-051-03, /03L-0:on 830712,while in Mode 4,condenser Air Ejector Monitor 3RT-7870 Discovered to Have Low Flow During Routine Daily Surveillance & Declared Inoperable.Caused by Valve Manipulation by Unauthorized Personnel

Recorder 2-CAC-LR-2602 Showed out-of-spec Low Level While Redundant Level Indicators Showed Normal Level.Caused by out-of-calibr Instrument Transmitter.Device Recalibr
type: Subject
label: 05000324/LER-1983-026-03, /03L-0:on 830313,suppression Pool Level Indicator/ Recorder 2-CAC-LR-2602 Showed out-of-spec Low Level While Redundant Level Indicators Showed Normal Level.Caused by out-of-calibr Instrument Transmitter.Device Recalibr
page: https://kanterella.com/05000324/LER-2D1983-2D026-2D03-2C_/03L-2D0-3Aon_830313-2Csuppression_Pool_Level_Indicator/_Recorder_2-2DCAC-2DLR-2D2602_Showed_out-2Dof-2Dspec_Low_Level_While_Redundant_Level_In…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000324/LER-1983-026-03, /03L-0:on 830313,suppression Pool Level Indicator/ Recorder 2-CAC-LR-2602 Showed out-of-spec Low Level While Redundant Level Indicators Showed Normal Level.Caused by out-of-calibr Instrument Transmitter.Device Recalibr

03L-0:on 830219,technician Discovered That PSH-B21-N056 B & C (Low Condenser Vacuum Pressure switches-channel B & C) Did Not Meet Tech Spec.Caused by Setpoint Drift.Switches Recalibr
type: Subject
label: 05000387/LER-1983-027-03, /03L-0:on 830219,technician Discovered That PSH-B21-N056 B & C (Low Condenser Vacuum Pressure switches-channel B & C) Did Not Meet Tech Spec.Caused by Setpoint Drift.Switches Recalibr
page: https://kanterella.com/05000387/LER-2D1983-2D027-2D03-2C_/03L-2D0-3Aon_830219-2Ctechnician_Discovered_That_PSH-2DB21-2DN056_B_-26_C_-28Low_Condenser_Vacuum_Pressure_switches-2Dchannel_B_-26_C-29_Did_N…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-027-03, /03L-0:on 830219,technician Discovered That PSH-B21-N056 B & C (Low Condenser Vacuum Pressure switches-channel B & C) Did Not Meet Tech Spec.Caused by Setpoint Drift.Switches Recalibr

05000348/LER-1983-021-03, /03L-0:on 830506,power Supply Breaker HBL7R Opened.Possibly Caused by Personnel Inadvertently Tripping Breaker by Closing Locker.Locker Moved
type: Subject
page: https://kanterella.com/05000348/LER-2D1983-2D021-2D03-2C_/03L-2D0-3Aon_830506-2Cpower_Supply_Breaker_HBL7R_Opened.Possibly_Caused_by_Personnel_Inadvertently_Tripping_Breaker_by_Closing_Locker.Locker_M…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000348/LER-1983-021-03, /03L-0:on 830506,power Supply Breaker HBL7R Opened.Possibly Caused by Personnel Inadvertently Tripping Breaker by Closing Locker.Locker Moved

03L-0:on 830120,engineering Safeguards Channels A,B & C Reactor Bldg narrow-range Pressure Transmitter Drifted Out of Calibr.Caused by Deficient Procedures. Channels Recalibr & Procedures Changed
type: Subject
label: 05000269/LER-1983-003-03, /03L-0:on 830120,engineering Safeguards Channels A,B & C Reactor Bldg narrow-range Pressure Transmitter Drifted Out of Calibr.Caused by Deficient Procedures. Channels Recalibr & Procedures Changed
page: https://kanterella.com/05000269/LER-2D1983-2D003-2D03-2C_/03L-2D0-3Aon_830120-2Cengineering_Safeguards_Channels_A-2CB_-26_C_Reactor_Bldg_narrow-2Drange_Pressure_Transmitter_Drifted_Out_of_Calibr.Cause…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000269/LER-1983-003-03, /03L-0:on 830120,engineering Safeguards Channels A,B & C Reactor Bldg narrow-range Pressure Transmitter Drifted Out of Calibr.Caused by Deficient Procedures. Channels Recalibr & Procedures Changed

03L-0 on 780925:during Routine testing,1 of 5 Heating Ventilation & Air Conditioning Sys Isolation Dampers for 480 Volt Switchgear Room Would Not Shut,Due to Faulty O-ring in Damper Jamming Open Actuating Shaft
type: Subject
label: 05000267/LER-1978-031-03, /03L-0 on 780925:during Routine testing,1 of 5 Heating Ventilation & Air Conditioning Sys Isolation Dampers for 480 Volt Switchgear Room Would Not Shut,Due to Faulty O-ring in Damper Jamming Open Actuating Shaft
page: https://kanterella.com/05000267/LER-2D1978-2D031-2D03-2C_/03L-2D0_on_780925-3Aduring_Routine_testing-2C1_of_5_Heating_Ventilation_-26_Air_Conditioning_Sys_Isolation_Dampers_for_480_Volt_Switchgear_Roo…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000267/LER-1978-031-03, /03L-0 on 780925:during Routine testing,1 of 5 Heating Ventilation & Air Conditioning Sys Isolation Dampers for 480 Volt Switchgear Room Would Not Shut,Due to Faulty O-ring in Damper Jamming Open Actuating Shaft

03L-0:on 821013,turbine Bldg Special Particulate Iodine Noble Gas Monitor Taken Out of Svc.Alternate Sampling Commenced While Monitor Out of Svc.Sampling Discontinued Since Sping Operating During Sampling.No Caused Stated
type: Subject
label: 05000387/LER-1982-041-03, /03L-0:on 821013,turbine Bldg Special Particulate Iodine Noble Gas Monitor Taken Out of Svc.Alternate Sampling Commenced While Monitor Out of Svc.Sampling Discontinued Since Sping Operating During Sampling.No Caused Stated
page: https://kanterella.com/05000387/LER-2D1982-2D041-2D03-2C_/03L-2D0-3Aon_821013-2Cturbine_Bldg_Special_Particulate_Iodine_Noble_Gas_Monitor_Taken_Out_of_Svc.Alternate_Sampling_Commenced_While_Monitor_Ou…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1982-041-03, /03L-0:on 821013,turbine Bldg Special Particulate Iodine Noble Gas Monitor Taken Out of Svc.Alternate Sampling Commenced While Monitor Out of Svc.Sampling Discontinued Since Sping Operating During Sampling.No Caused Stated

Results of 12 Gpm
type: Subject
label: 05000395/LER-1982-026-03, /03L-0:on 821019,operator Noticed Frequent Auto Reactor Coolant Makeup to Vol Control Tank of Chemical Vol & Control Sys.Caused by Cracked Safety Injection Filter B Vent Valve.Leak Test Performed W/Results of 12 Gpm
page: https://kanterella.com/05000395/LER-2D1982-2D026-2D03-2C_/03L-2D0-3Aon_821019-2Coperator_Noticed_Frequent_Auto_Reactor_Coolant_Makeup_to_Vol_Control_Tank_of_Chemical_Vol_-26_Control_Sys.Caused_by_Crac…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000395/LER-1982-026-03, /03L-0:on 821019,operator Noticed Frequent Auto Reactor Coolant Makeup to Vol Control Tank of Chemical Vol & Control Sys.Caused by Cracked Safety Injection Filter B Vent Valve.Leak Test Performed W/Results of 12 Gpm

Hot Standby Position.Cause Not Stated.Procedure Changed
type: Subject
label: 05000416/LER-1983-035-01, /01T-0:on 830209,performance of Previous Refueling Interlock Surveillance Procedure Found to Violate Tech Specs Since Reactor Mode Switch Placed in Startup/Hot Standby Position.Cause Not Stated.Procedure Changed
page: https://kanterella.com/05000416/LER-2D1983-2D035-2D01-2C_/01T-2D0-3Aon_830209-2Cperformance_of_Previous_Refueling_Interlock_Surveillance_Procedure_Found_to_Violate_Tech_Specs_Since_Reactor_Mode_Switch…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000416/LER-1983-035-01, /01T-0:on 830209,performance of Previous Refueling Interlock Surveillance Procedure Found to Violate Tech Specs Since Reactor Mode Switch Placed in Startup/Hot Standby Position.Cause Not Stated.Procedure Changed

03L-0 on 781017:during Routine Surveillance Test of Standby Gas Treatment Sys,The Sys II Discharge Valve Failed to Open,Due to Stuck Solenoid in Control Air Supply to Operator for V-28-30
type: Subject
label: 05000219/LER-1978-022-03, /03L-0 on 781017:during Routine Surveillance Test of Standby Gas Treatment Sys,The Sys II Discharge Valve Failed to Open,Due to Stuck Solenoid in Control Air Supply to Operator for V-28-30
page: https://kanterella.com/05000219/LER-2D1978-2D022-2D03-2C_/03L-2D0_on_781017-3Aduring_Routine_Surveillance_Test_of_Standby_Gas_Treatment_Sys-2CThe_Sys_II_Discharge_Valve_Failed_to_Open-2CDue_to_Stuck_S…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000219/LER-1978-022-03, /03L-0 on 781017:during Routine Surveillance Test of Standby Gas Treatment Sys,The Sys II Discharge Valve Failed to Open,Due to Stuck Solenoid in Control Air Supply to Operator for V-28-30

03L-0:on 821208,while Reviewing Past Completed Surveillances for Determining Component Operability, Operational Condition 2 Entered Prior to Required Surveillances.Caused by Lack of Trigger Mechanism
type: Subject
label: 05000387/LER-1982-070-03, /03L-0:on 821208,while Reviewing Past Completed Surveillances for Determining Component Operability, Operational Condition 2 Entered Prior to Required Surveillances.Caused by Lack of Trigger Mechanism
page: https://kanterella.com/05000387/LER-2D1982-2D070-2D03-2C_/03L-2D0-3Aon_821208-2Cwhile_Reviewing_Past_Completed_Surveillances_for_Determining_Component_Operability-2C_Operational_Condition_2_Entered_Pr…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1982-070-03, /03L-0:on 821208,while Reviewing Past Completed Surveillances for Determining Component Operability, Operational Condition 2 Entered Prior to Required Surveillances.Caused by Lack of Trigger Mechanism

03L-0:on 830113,during Startup Test Program, Reactor Recirculation Pump a Tripped Off.Caused by Defective Transformer That Had Shorted Secondary.Transformer Replaced. Pump Returned to Svc
type: Subject
label: 05000387/LER-1983-012-03, /03L-0:on 830113,during Startup Test Program, Reactor Recirculation Pump a Tripped Off.Caused by Defective Transformer That Had Shorted Secondary.Transformer Replaced. Pump Returned to Svc
page: https://kanterella.com/05000387/LER-2D1983-2D012-2D03-2C_/03L-2D0-3Aon_830113-2Cduring_Startup_Test_Program-2C_Reactor_Recirculation_Pump_a_Tripped_Off.Caused_by_Defective_Transformer_That_Had_Shorted…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-012-03, /03L-0:on 830113,during Startup Test Program, Reactor Recirculation Pump a Tripped Off.Caused by Defective Transformer That Had Shorted Secondary.Transformer Replaced. Pump Returned to Svc

LER-1977-027, :on 770923,RHR Torus Cooling Valve Body Seat Ring Threads Found to Be Stripped.Caused by Rotation of Plug Which Unscrewed Seat.Mod in Process to Hold Seat in Place Using Bolding Ring Welded to Valve Body
type: Subject
label: 05000263/LER-1977-027, :on 770923,RHR Torus Cooling Valve Body Seat Ring Threads Found to Be Stripped.Caused by Rotation of Plug Which Unscrewed Seat.Mod in Process to Hold Seat in Place Using Bolding Ring Welded to Valve Body
page: https://kanterella.com/05000263/LER-2D1977-2D027-2C_-3Aon_770923-2CRHR_Torus_Cooling_Valve_Body_Seat_Ring_Threads_Found_to_Be_Stripped.Caused_by_Rotation_of_Plug_Which_Unscrewed_Seat.Mod_in_Process_to…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1977-027, :on 770923,RHR Torus Cooling Valve Body Seat Ring Threads Found to Be Stripped.Caused by Rotation of Plug Which Unscrewed Seat.Mod in Process to Hold Seat in Place Using Bolding Ring Welded to Valve Body

03L-0:on 820422,chemical Waste Tank Recycle Line Leak Discovered.Spillage Contained in Radwaste Collection Sys.Caused by long-term Corrosion & Excessive Acid Use During 820422 Makeup Regeneration
type: Subject
label: 05000155/LER-1982-014-03, /03L-0:on 820422,chemical Waste Tank Recycle Line Leak Discovered.Spillage Contained in Radwaste Collection Sys.Caused by long-term Corrosion & Excessive Acid Use During 820422 Makeup Regeneration
page: https://kanterella.com/05000155/LER-2D1982-2D014-2D03-2C_/03L-2D0-3Aon_820422-2Cchemical_Waste_Tank_Recycle_Line_Leak_Discovered.Spillage_Contained_in_Radwaste_Collection_Sys.Caused_by_long-2Dterm_Cor…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000155/LER-1982-014-03, /03L-0:on 820422,chemical Waste Tank Recycle Line Leak Discovered.Spillage Contained in Radwaste Collection Sys.Caused by long-term Corrosion & Excessive Acid Use During 820422 Makeup Regeneration

01T-0:on 820410,ASCO Inboard & Outboard Drywell Vent 3-way Solenoid Valves,Model 830064C64U,failed to Close Upon Hand Switch Activation When Coil de-energized.Probably Caused by Horizontally Mounted Solenoids.Valves Replace
type: Subject
label: 05000263/LER-1982-004-01, /01T-0:on 820410,ASCO Inboard & Outboard Drywell Vent 3-way Solenoid Valves,Model 830064C64U,failed to Close Upon Hand Switch Activation When Coil de-energized.Probably Caused by Horizontally Mounted Solenoids.Valves Replace
page: https://kanterella.com/05000263/LER-2D1982-2D004-2D01-2C_/01T-2D0-3Aon_820410-2CASCO_Inboard_-26_Outboard_Drywell_Vent_3-2Dway_Solenoid_Valves-2CModel_830064C64U-2Cfailed_to_Close_Upon_Hand_Switch_Act…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1982-004-01, /01T-0:on 820410,ASCO Inboard & Outboard Drywell Vent 3-way Solenoid Valves,Model 830064C64U,failed to Close Upon Hand Switch Activation When Coil de-energized.Probably Caused by Horizontally Mounted Solenoids.Valves Replace

Heads Broken Off & Shock Pad Y-2 Attachment Bolts Discovered Broken.Caused by Intergranular Stress Corrosion Cracking.Pad Removed
type: Subject
label: 05000270/LER-1982-002-01, /01T-0:on 820122,three Core Support Assembly Thermal Shield Bolts Found W/Heads Broken Off & Shock Pad Y-2 Attachment Bolts Discovered Broken.Caused by Intergranular Stress Corrosion Cracking.Pad Removed
page: https://kanterella.com/05000270/LER-2D1982-2D002-2D01-2C_/01T-2D0-3Aon_820122-2Cthree_Core_Support_Assembly_Thermal_Shield_Bolts_Found_W/Heads_Broken_Off_-26_Shock_Pad_Y-2D2_Attachment_Bolts_Discovere…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000270/LER-1982-002-01, /01T-0:on 820122,three Core Support Assembly Thermal Shield Bolts Found W/Heads Broken Off & Shock Pad Y-2 Attachment Bolts Discovered Broken.Caused by Intergranular Stress Corrosion Cracking.Pad Removed

05000369/LER-1981-194-03, /03L-0:on 811230,during Periodic Fire Pump Operability Test,Discovered That Fire Pump C Would Not Start.Cause Undetermined.Update Rept Will Be Submitted by 820226
type: Subject
page: https://kanterella.com/05000369/LER-2D1981-2D194-2D03-2C_/03L-2D0-3Aon_811230-2Cduring_Periodic_Fire_Pump_Operability_Test-2CDiscovered_That_Fire_Pump_C_Would_Not_Start.Cause_Undetermined.Update_Rept_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000369/LER-1981-194-03, /03L-0:on 811230,during Periodic Fire Pump Operability Test,Discovered That Fire Pump C Would Not Start.Cause Undetermined.Update Rept Will Be Submitted by 820226

01T-0:on 820106,routine Review of Source Document Changes Revealed Class H Piping in Fire Protection Sys in Diesel Generator Room 1A Routed Above One Nuclear safety-related Essential Cable & Instrument Panel
type: Subject
label: 05000369/LER-1982-001-01, /01T-0:on 820106,routine Review of Source Document Changes Revealed Class H Piping in Fire Protection Sys in Diesel Generator Room 1A Routed Above One Nuclear safety-related Essential Cable & Instrument Panel
page: https://kanterella.com/05000369/LER-2D1982-2D001-2D01-2C_/01T-2D0-3Aon_820106-2Croutine_Review_of_Source_Document_Changes_Revealed_Class_H_Piping_in_Fire_Protection_Sys_in_Diesel_Generator_Room_1A_Rou…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000369/LER-1982-001-01, /01T-0:on 820106,routine Review of Source Document Changes Revealed Class H Piping in Fire Protection Sys in Diesel Generator Room 1A Routed Above One Nuclear safety-related Essential Cable & Instrument Panel

03L-0:on 811029,hydrogen Purge Unit Declared Inoperable Due to Substandard Heat Output from Dehumidifier Heaters.Caused by Frayed Conductor Cable Due to Suspected Thermal Embrittlement & Mechanical Vibration
type: Subject
label: 05000269/LER-1981-020-03, /03L-0:on 811029,hydrogen Purge Unit Declared Inoperable Due to Substandard Heat Output from Dehumidifier Heaters.Caused by Frayed Conductor Cable Due to Suspected Thermal Embrittlement & Mechanical Vibration
page: https://kanterella.com/05000269/LER-2D1981-2D020-2D03-2C_/03L-2D0-3Aon_811029-2Chydrogen_Purge_Unit_Declared_Inoperable_Due_to_Substandard_Heat_Output_from_Dehumidifier_Heaters.Caused_by_Frayed_Conduc…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000269/LER-1981-020-03, /03L-0:on 811029,hydrogen Purge Unit Declared Inoperable Due to Substandard Heat Output from Dehumidifier Heaters.Caused by Frayed Conductor Cable Due to Suspected Thermal Embrittlement & Mechanical Vibration

99X-0:on 811009,code Safety Valve Ms 48A on Main Steam Line 21 Was Found Lifting at Lower than Specified Pressure.Caused by Broken Section on Disc Holder in Valve. Defective Parts Replaced
type: Subject
label: 05000247/LER-1981-025-99, /99X-0:on 811009,code Safety Valve Ms 48A on Main Steam Line 21 Was Found Lifting at Lower than Specified Pressure.Caused by Broken Section on Disc Holder in Valve. Defective Parts Replaced
page: https://kanterella.com/05000247/LER-2D1981-2D025-2D99-2C_/99X-2D0-3Aon_811009-2Ccode_Safety_Valve_Ms_48A_on_Main_Steam_Line_21_Was_Found_Lifting_at_Lower_than_Specified_Pressure.Caused_by_Broken_Secti…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000247/LER-1981-025-99, /99X-0:on 811009,code Safety Valve Ms 48A on Main Steam Line 21 Was Found Lifting at Lower than Specified Pressure.Caused by Broken Section on Disc Holder in Valve. Defective Parts Replaced

03L-0:on 811023,U1 Offgas Particle & Gas Radiation Monitors Not Pulling Representative Sample & Release Path Not Being Continuously Monitored.Caused by Air in-leakage Due to Worn O-rings on Detector Housing Assembly
type: Subject
label: 05000295/LER-1981-046-03, /03L-0:on 811023,U1 Offgas Particle & Gas Radiation Monitors Not Pulling Representative Sample & Release Path Not Being Continuously Monitored.Caused by Air in-leakage Due to Worn O-rings on Detector Housing Assembly
page: https://kanterella.com/05000295/LER-2D1981-2D046-2D03-2C_/03L-2D0-3Aon_811023-2CU1_Offgas_Particle_-26_Gas_Radiation_Monitors_Not_Pulling_Representative_Sample_-26_Release_Path_Not_Being_Continuously_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000295/LER-1981-046-03, /03L-0:on 811023,U1 Offgas Particle & Gas Radiation Monitors Not Pulling Representative Sample & Release Path Not Being Continuously Monitored.Caused by Air in-leakage Due to Worn O-rings on Detector Housing Assembly

05000263/LER-1981-021-01, /01T-0:on 811024,during Cold Shutdown Primary Containment Isolation Sys Logic Relay Coil Failed & Relay Did Not Immediately Trip.Caused by Natural end-of-life. Replaced Relay
type: Subject
page: https://kanterella.com/05000263/LER-2D1981-2D021-2D01-2C_/01T-2D0-3Aon_811024-2Cduring_Cold_Shutdown_Primary_Containment_Isolation_Sys_Logic_Relay_Coil_Failed_-26_Relay_Did_Not_Immediately_Trip.Caused…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1981-021-01, /01T-0:on 811024,during Cold Shutdown Primary Containment Isolation Sys Logic Relay Coil Failed & Relay Did Not Immediately Trip.Caused by Natural end-of-life. Replaced Relay

01T-0:on 810731,analysis of RCS Flow Coastdown Test Data Showed Test Failed Some Acceptance Criteria. Apparently Caused by Westinghouse Computer Predicted Curves Being More Optimistic than Actual Sys Characteristics
type: Subject
label: 05000369/LER-1981-118-01, /01T-0:on 810731,analysis of RCS Flow Coastdown Test Data Showed Test Failed Some Acceptance Criteria. Apparently Caused by Westinghouse Computer Predicted Curves Being More Optimistic than Actual Sys Characteristics
page: https://kanterella.com/05000369/LER-2D1981-2D118-2D01-2C_/01T-2D0-3Aon_810731-2Canalysis_of_RCS_Flow_Coastdown_Test_Data_Showed_Test_Failed_Some_Acceptance_Criteria._Apparently_Caused_by_Westinghouse_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000369/LER-1981-118-01, /01T-0:on 810731,analysis of RCS Flow Coastdown Test Data Showed Test Failed Some Acceptance Criteria. Apparently Caused by Westinghouse Computer Predicted Curves Being More Optimistic than Actual Sys Characteristics

03L-0:on 810706,during Maint,Main Feedwater Containment Isolation Valve Was Found Open.Probably Caused by Open Line Pressure Driving Valve.Valve Closed & Locking Device Installed
type: Subject
label: 05000369/LER-1981-111-03, /03L-0:on 810706,during Maint,Main Feedwater Containment Isolation Valve Was Found Open.Probably Caused by Open Line Pressure Driving Valve.Valve Closed & Locking Device Installed
page: https://kanterella.com/05000369/LER-2D1981-2D111-2D03-2C_/03L-2D0-3Aon_810706-2Cduring_Maint-2CMain_Feedwater_Containment_Isolation_Valve_Was_Found_Open.Probably_Caused_by_Open_Line_Pressure_Driving_V…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000369/LER-1981-111-03, /03L-0:on 810706,during Maint,Main Feedwater Containment Isolation Valve Was Found Open.Probably Caused by Open Line Pressure Driving Valve.Valve Closed & Locking Device Installed

ML20030A538
type: Subject
page: https://kanterella.com/ML20030A538
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML20030A538

03L-0:on 830102,RCS Subcooling Monitor Channel 2 Declared Inoperable Following Receipt of Main Control Board Alarms.Caused by Faulty Printed Circuit Card.Connector Pins on Card Cleaned
type: Subject
label: 05000348/LER-1983-001-03, /03L-0:on 830102,RCS Subcooling Monitor Channel 2 Declared Inoperable Following Receipt of Main Control Board Alarms.Caused by Faulty Printed Circuit Card.Connector Pins on Card Cleaned
page: https://kanterella.com/05000348/LER-2D1983-2D001-2D03-2C_/03L-2D0-3Aon_830102-2CRCS_Subcooling_Monitor_Channel_2_Declared_Inoperable_Following_Receipt_of_Main_Control_Board_Alarms.Caused_by_Faulty_Pri…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000348/LER-1983-001-03, /03L-0:on 830102,RCS Subcooling Monitor Channel 2 Declared Inoperable Following Receipt of Main Control Board Alarms.Caused by Faulty Printed Circuit Card.Connector Pins on Card Cleaned

05000348/LER-1983-042-03, /03L-0:on 830802,post-LOCA Hydrogen Recombiner 1A Declared Inoperable.Caused by Failure of Temp Indicator.New Indicator Installed & Declared Operable
type: Subject
page: https://kanterella.com/05000348/LER-2D1983-2D042-2D03-2C_/03L-2D0-3Aon_830802-2Cpost-2DLOCA_Hydrogen_Recombiner_1A_Declared_Inoperable.Caused_by_Failure_of_Temp_Indicator.New_Indicator_Installed_-26_D…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000348/LER-1983-042-03, /03L-0:on 830802,post-LOCA Hydrogen Recombiner 1A Declared Inoperable.Caused by Failure of Temp Indicator.New Indicator Installed & Declared Operable

03L-0:on 830629,control Area Ventilation Sys Train B Declared Inoperable.Caused by Automatic Reset Preheater Overtemp Cutout Switch Failure.Replacement Switch Will Be Installed
type: Subject
label: 05000369/LER-1983-050-03, /03L-0:on 830629,control Area Ventilation Sys Train B Declared Inoperable.Caused by Automatic Reset Preheater Overtemp Cutout Switch Failure.Replacement Switch Will Be Installed
page: https://kanterella.com/05000369/LER-2D1983-2D050-2D03-2C_/03L-2D0-3Aon_830629-2Ccontrol_Area_Ventilation_Sys_Train_B_Declared_Inoperable.Caused_by_Automatic_Reset_Preheater_Overtemp_Cutout_Switch_Fail…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000369/LER-1983-050-03, /03L-0:on 830629,control Area Ventilation Sys Train B Declared Inoperable.Caused by Automatic Reset Preheater Overtemp Cutout Switch Failure.Replacement Switch Will Be Installed

Radio Communication Will Be Posted
type: Subject
label: 05000387/LER-1983-086-03, /03L-0:on 830525,reactor Bldg Door Opened While Maint Performed on Turbine Bldg Side of Air Lock to Reactor Bldg.Caused by Personnel Error.Individual W/Radio Communication Will Be Posted
page: https://kanterella.com/05000387/LER-2D1983-2D086-2D03-2C_/03L-2D0-3Aon_830525-2Creactor_Bldg_Door_Opened_While_Maint_Performed_on_Turbine_Bldg_Side_of_Air_Lock_to_Reactor_Bldg.Caused_by_Personnel_Erro…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-086-03, /03L-0:on 830525,reactor Bldg Door Opened While Maint Performed on Turbine Bldg Side of Air Lock to Reactor Bldg.Caused by Personnel Error.Individual W/Radio Communication Will Be Posted

05000387/LER-1983-063-03, /03L-0:on 830411,main Steam Line Drain Valve Leakage Exceeded Tech Spec Limit.Cause Not Stated.Seal Ring Replaced,Outboard Valve Lapped & Valves Reassembled
type: Subject
page: https://kanterella.com/05000387/LER-2D1983-2D063-2D03-2C_/03L-2D0-3Aon_830411-2Cmain_Steam_Line_Drain_Valve_Leakage_Exceeded_Tech_Spec_Limit.Cause_Not_Stated.Seal_Ring_Replaced-2COutboard_Valve_Lapped…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000387/LER-1983-063-03, /03L-0:on 830411,main Steam Line Drain Valve Leakage Exceeded Tech Spec Limit.Cause Not Stated.Seal Ring Replaced,Outboard Valve Lapped & Valves Reassembled

03L-0:on 830402,overtemp-delta Temp Loop 2 Channel II Declared Inoperable When Bistables 422C1-2 Tripped.Caused by Power Supply Failure of Comparator Card. Card Replaced & Loop Calibr
type: Subject
label: 05000348/LER-1983-012-03, /03L-0:on 830402,overtemp-delta Temp Loop 2 Channel II Declared Inoperable When Bistables 422C1-2 Tripped.Caused by Power Supply Failure of Comparator Card. Card Replaced & Loop Calibr
page: https://kanterella.com/05000348/LER-2D1983-2D012-2D03-2C_/03L-2D0-3Aon_830402-2Covertemp-2Ddelta_Temp_Loop_2_Channel_II_Declared_Inoperable_When_Bistables_422C1-2D2_Tripped.Caused_by_Power_Supply_Fail…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000348/LER-1983-012-03, /03L-0:on 830402,overtemp-delta Temp Loop 2 Channel II Declared Inoperable When Bistables 422C1-2 Tripped.Caused by Power Supply Failure of Comparator Card. Card Replaced & Loop Calibr

03L-0:on 810805,ionization Smoke Detector in Fire Zone 72 Failed Channel Functional Test.Caused by Deterioration of Integral Printed Circuitry Due to Boric Acid Deposits in Honeywell Detector,Type TC 100A
type: Subject
label: 05000369/LER-1981-130-03, /03L-0:on 810805,ionization Smoke Detector in Fire Zone 72 Failed Channel Functional Test.Caused by Deterioration of Integral Printed Circuitry Due to Boric Acid Deposits in Honeywell Detector,Type TC 100A
page: https://kanterella.com/05000369/LER-2D1981-2D130-2D03-2C_/03L-2D0-3Aon_810805-2Cionization_Smoke_Detector_in_Fire_Zone_72_Failed_Channel_Functional_Test.Caused_by_Deterioration_of_Integral_Printed_Cir…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000369/LER-1981-130-03, /03L-0:on 810805,ionization Smoke Detector in Fire Zone 72 Failed Channel Functional Test.Caused by Deterioration of Integral Printed Circuitry Due to Boric Acid Deposits in Honeywell Detector,Type TC 100A

Outfall on 810505.Caused by Improved Analytical Techniques,Detecting Sensitivities Below Capabilities Specified in Tech Specs
type: Subject
label: 05000293/LER-1981-030-04, /04T-0:on 810603,lab Rept Indicated Concentration of Co-60 in Mussel Taken from Discharge Canal/Outfall on 810505.Caused by Improved Analytical Techniques,Detecting Sensitivities Below Capabilities Specified in Tech Specs
page: https://kanterella.com/05000293/LER-2D1981-2D030-2D04-2C_/04T-2D0-3Aon_810603-2Clab_Rept_Indicated_Concentration_of_Co-2D60_in_Mussel_Taken_from_Discharge_Canal/Outfall_on_810505.Caused_by_Improved_An…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000293/LER-1981-030-04, /04T-0:on 810603,lab Rept Indicated Concentration of Co-60 in Mussel Taken from Discharge Canal/Outfall on 810505.Caused by Improved Analytical Techniques,Detecting Sensitivities Below Capabilities Specified in Tech Specs

ML20031C415
type: Subject
page: https://kanterella.com/ML20031C415
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML20031C415

ML20038A093
type: Subject
page: https://kanterella.com/ML20038A093
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML20038A093

03L-0:on 810516,testing Indicated That Low Pressure Safety Injection & Reactor Trip Were Below Tech Spec Limits for Pressure Transmitters.Caused by Instrument Drift.Sensing Lines Flushed.Amplifier Replaced
type: Subject
label: 05000305/LER-1981-018-03, /03L-0:on 810516,testing Indicated That Low Pressure Safety Injection & Reactor Trip Were Below Tech Spec Limits for Pressure Transmitters.Caused by Instrument Drift.Sensing Lines Flushed.Amplifier Replaced
page: https://kanterella.com/05000305/LER-2D1981-2D018-2D03-2C_/03L-2D0-3Aon_810516-2Ctesting_Indicated_That_Low_Pressure_Safety_Injection_-26_Reactor_Trip_Were_Below_Tech_Spec_Limits_for_Pressure_Transmitt…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000305/LER-1981-018-03, /03L-0:on 810516,testing Indicated That Low Pressure Safety Injection & Reactor Trip Were Below Tech Spec Limits for Pressure Transmitters.Caused by Instrument Drift.Sensing Lines Flushed.Amplifier Replaced

05000029/LER-1977-031-03, /03L-0:on 770609,loop Seal Radiation Monitor Pegged at Low End of Scale.Caused by RM-40 Power Supply High Voltage Tripping.Voltage Adjusted
type: Subject
page: https://kanterella.com/05000029/LER-2D1977-2D031-2D03-2C_/03L-2D0-3Aon_770609-2Cloop_Seal_Radiation_Monitor_Pegged_at_Low_End_of_Scale.Caused_by_RM-2D40_Power_Supply_High_Voltage_Tripping.Voltage_Adju…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-031-03, /03L-0:on 770609,loop Seal Radiation Monitor Pegged at Low End of Scale.Caused by RM-40 Power Supply High Voltage Tripping.Voltage Adjusted

16-inch Pull Back Gap During Installation of Weld.Pump Isolated & Nipple Replaced
type: Subject
label: 05000029/LER-1976-011-03, /03L-0:on 760907,slight Leakage Noted from Welded Nipple on Charging Pump 3 Discharge Heater Line.Caused by Failure to Allow 1/16-inch Pull Back Gap During Installation of Weld.Pump Isolated & Nipple Replaced
page: https://kanterella.com/05000029/LER-2D1976-2D011-2D03-2C_/03L-2D0-3Aon_760907-2Cslight_Leakage_Noted_from_Welded_Nipple_on_Charging_Pump_3_Discharge_Heater_Line.Caused_by_Failure_to_Allow_1/16-2Dinch_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1976-011-03, /03L-0:on 760907,slight Leakage Noted from Welded Nipple on Charging Pump 3 Discharge Heater Line.Caused by Failure to Allow 1/16-inch Pull Back Gap During Installation of Weld.Pump Isolated & Nipple Replaced

ML19345G086
type: Subject
page: https://kanterella.com/ML19345G086
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19345G086

05000318/LER-1980-056-03, /03L-0:on 801116,control Element Assembly 1 Dropped Into Core.Cause Undetermined.Power Reduced to Less than 70% & Control Element Assembly Returned to Group Height
type: Subject
page: https://kanterella.com/05000318/LER-2D1980-2D056-2D03-2C_/03L-2D0-3Aon_801116-2Ccontrol_Element_Assembly_1_Dropped_Into_Core.Cause_Undetermined.Power_Reduced_to_Less_than_70-_-26_Control_Element_Assem…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000318/LER-1980-056-03, /03L-0:on 801116,control Element Assembly 1 Dropped Into Core.Cause Undetermined.Power Reduced to Less than 70% & Control Element Assembly Returned to Group Height

03L-0:on 770611,during Surveillance testing,TV- 209 Containment Drain Line Trip Isolation Valve Failed to Close.Caused by Excessively Tightened Packing.Packing Probably Overtightened During Recent Containment Leak Insp
type: Subject
label: 05000029/LER-1977-032-03, /03L-0:on 770611,during Surveillance testing,TV- 209 Containment Drain Line Trip Isolation Valve Failed to Close.Caused by Excessively Tightened Packing.Packing Probably Overtightened During Recent Containment Leak Insp
page: https://kanterella.com/05000029/LER-2D1977-2D032-2D03-2C_/03L-2D0-3Aon_770611-2Cduring_Surveillance_testing-2CTV-2D_209_Containment_Drain_Line_Trip_Isolation_Valve_Failed_to_Close.Caused_by_Excessivel…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-032-03, /03L-0:on 770611,during Surveillance testing,TV- 209 Containment Drain Line Trip Isolation Valve Failed to Close.Caused by Excessively Tightened Packing.Packing Probably Overtightened During Recent Containment Leak Insp

03L-0:on 760520,auxiliary Operator Noted Slight Leakage from Weld on Inlet Charging Pump 3 Relief Valve. Caused by Pullback Gap Not Allowed During Installation of Pipe & Vibration Induced Fatigue Failure
type: Subject
label: 05000029/LER-1976-005-03, /03L-0:on 760520,auxiliary Operator Noted Slight Leakage from Weld on Inlet Charging Pump 3 Relief Valve. Caused by Pullback Gap Not Allowed During Installation of Pipe & Vibration Induced Fatigue Failure
page: https://kanterella.com/05000029/LER-2D1976-2D005-2D03-2C_/03L-2D0-3Aon_760520-2Cauxiliary_Operator_Noted_Slight_Leakage_from_Weld_on_Inlet_Charging_Pump_3_Relief_Valve._Caused_by_Pullback_Gap_Not_Allo…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1976-005-03, /03L-0:on 760520,auxiliary Operator Noted Slight Leakage from Weld on Inlet Charging Pump 3 Relief Valve. Caused by Pullback Gap Not Allowed During Installation of Pipe & Vibration Induced Fatigue Failure

010-0:on 760730,review of Rod Ejection Accident Analysis Revealed Error in Method Used for Core 11 Analysis.Caused by Error in Methods & Application of Analysis Codes.Sys of Documentation Control Initiated
type: Subject
label: 05000029/LER-1976-008, Updated LER 76-008/010-0:on 760730,review of Rod Ejection Accident Analysis Revealed Error in Method Used for Core 11 Analysis.Caused by Error in Methods & Application of Analysis Codes.Sys of Documentation Control Initiated
page: https://kanterella.com/05000029/LER-2D1976-2D008-2C_Updated_LER_76-2D008/010-2D0-3Aon_760730-2Creview_of_Rod_Ejection_Accident_Analysis_Revealed_Error_in_Method_Used_for_Core_11_Analysis.Caused_by_Err…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1976-008, Updated LER 76-008/010-0:on 760730,review of Rod Ejection Accident Analysis Revealed Error in Method Used for Core 11 Analysis.Caused by Error in Methods & Application of Analysis Codes.Sys of Documentation Control Initiated

05000029/LER-1977-011-03, /03L-0:on 770301,emergency Diesel Generator 1 Starter Motor Failed During Surveillance Test.Caused by Armmature Shaft Being Broke.Starting Motor Replaced
type: Subject
page: https://kanterella.com/05000029/LER-2D1977-2D011-2D03-2C_/03L-2D0-3Aon_770301-2Cemergency_Diesel_Generator_1_Starter_Motor_Failed_During_Surveillance_Test.Caused_by_Armmature_Shaft_Being_Broke.Startin…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-011-03, /03L-0:on 770301,emergency Diesel Generator 1 Starter Motor Failed During Surveillance Test.Caused by Armmature Shaft Being Broke.Starting Motor Replaced

05000029/LER-1977-018-03, /03L-0:on 770326,steam Generator Chloride Concentration Increased to Max Level of 4 Ppm in Steam Generator 2,exceeding Tech Specs Limit
type: Subject
page: https://kanterella.com/05000029/LER-2D1977-2D018-2D03-2C_/03L-2D0-3Aon_770326-2Csteam_Generator_Chloride_Concentration_Increased_to_Max_Level_of_4_Ppm_in_Steam_Generator_2-2Cexceeding_Tech_Specs_Limit
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-018-03, /03L-0:on 770326,steam Generator Chloride Concentration Increased to Max Level of 4 Ppm in Steam Generator 2,exceeding Tech Specs Limit

05000029/LER-1977-028-03, /03L-0:on 770530,noble Gas Monitor of Primary Vent Stack Radiation Detection Sys Failed.Cause Could Not Be Ascertained as Trouble Could Not Be Repeated After Alarm Reset
type: Subject
page: https://kanterella.com/05000029/LER-2D1977-2D028-2D03-2C_/03L-2D0-3Aon_770530-2Cnoble_Gas_Monitor_of_Primary_Vent_Stack_Radiation_Detection_Sys_Failed.Cause_Could_Not_Be_Ascertained_as_Trouble_Could_N…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-028-03, /03L-0:on 770530,noble Gas Monitor of Primary Vent Stack Radiation Detection Sys Failed.Cause Could Not Be Ascertained as Trouble Could Not Be Repeated After Alarm Reset

03L-0:on 770306,alarm Setpoint Adjustment of Radiation Monitor for Steam Generator Blowdown Found Defective.Caused by Alarm Setpoint Control Failure to Adjust.Control Replaced
type: Subject
label: 05000029/LER-1977-012-03, /03L-0:on 770306,alarm Setpoint Adjustment of Radiation Monitor for Steam Generator Blowdown Found Defective.Caused by Alarm Setpoint Control Failure to Adjust.Control Replaced
page: https://kanterella.com/05000029/LER-2D1977-2D012-2D03-2C_/03L-2D0-3Aon_770306-2Calarm_Setpoint_Adjustment_of_Radiation_Monitor_for_Steam_Generator_Blowdown_Found_Defective.Caused_by_Alarm_Setpoint_Con…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-012-03, /03L-0:on 770306,alarm Setpoint Adjustment of Radiation Monitor for Steam Generator Blowdown Found Defective.Caused by Alarm Setpoint Control Failure to Adjust.Control Replaced

03L-0:on 770221,primary Vent Stack Monitor Particulate Channel Alarmed Due to Blown Fuse.Caused by Ledex Stepping Motor Failing to Advance Filter Paper Which Overloaded Driving Transistor.New Motor & Fuse Installed
type: Subject
label: 05000029/LER-1977-009-03, /03L-0:on 770221,primary Vent Stack Monitor Particulate Channel Alarmed Due to Blown Fuse.Caused by Ledex Stepping Motor Failing to Advance Filter Paper Which Overloaded Driving Transistor.New Motor & Fuse Installed
page: https://kanterella.com/05000029/LER-2D1977-2D009-2D03-2C_/03L-2D0-3Aon_770221-2Cprimary_Vent_Stack_Monitor_Particulate_Channel_Alarmed_Due_to_Blown_Fuse.Caused_by_Ledex_Stepping_Motor_Failing_to_Advan…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-009-03, /03L-0:on 770221,primary Vent Stack Monitor Particulate Channel Alarmed Due to Blown Fuse.Caused by Ledex Stepping Motor Failing to Advance Filter Paper Which Overloaded Driving Transistor.New Motor & Fuse Installed

Detector.Stops Aligned & Tightened
type: Subject
label: 05000029/LER-1977-008-03, /03L-0:on 770204,iodine Channel of Primary Vent Stack Radiation Monitoring Failed to Meet Count Rate Acceptance Criteria.Caused by Mechanical Stops Being Misaligned W/Detector.Stops Aligned & Tightened
page: https://kanterella.com/05000029/LER-2D1977-2D008-2D03-2C_/03L-2D0-3Aon_770204-2Ciodine_Channel_of_Primary_Vent_Stack_Radiation_Monitoring_Failed_to_Meet_Count_Rate_Acceptance_Criteria.Caused_by_Mechan…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-008-03, /03L-0:on 770204,iodine Channel of Primary Vent Stack Radiation Monitoring Failed to Meet Count Rate Acceptance Criteria.Caused by Mechanical Stops Being Misaligned W/Detector.Stops Aligned & Tightened

03L-0:on 770524,biannual Recalibr Performed on Two LPIS Accumulator Channels.Instruments Below Tech Specs Limit.Recalibr Adjustments Made to Bring Channels within Tech Specs Limit
type: Subject
label: 05000029/LER-1977-027-03, /03L-0:on 770524,biannual Recalibr Performed on Two LPIS Accumulator Channels.Instruments Below Tech Specs Limit.Recalibr Adjustments Made to Bring Channels within Tech Specs Limit
page: https://kanterella.com/05000029/LER-2D1977-2D027-2D03-2C_/03L-2D0-3Aon_770524-2Cbiannual_Recalibr_Performed_on_Two_LPIS_Accumulator_Channels.Instruments_Below_Tech_Specs_Limit.Recalibr_Adjustments_Mad…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-027-03, /03L-0:on 770524,biannual Recalibr Performed on Two LPIS Accumulator Channels.Instruments Below Tech Specs Limit.Recalibr Adjustments Made to Bring Channels within Tech Specs Limit

05000029/LER-1977-017-03, /03L-0:on 770324,following Plant Trip,Chlorides in Steam Generator 4 Exceeded Tech Specs Limits.Caused by Impurities Released in Bulk Water
type: Subject
page: https://kanterella.com/05000029/LER-2D1977-2D017-2D03-2C_/03L-2D0-3Aon_770324-2Cfollowing_Plant_Trip-2CChlorides_in_Steam_Generator_4_Exceeded_Tech_Specs_Limits.Caused_by_Impurities_Released_in_Bulk_W…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-017-03, /03L-0:on 770324,following Plant Trip,Chlorides in Steam Generator 4 Exceeded Tech Specs Limits.Caused by Impurities Released in Bulk Water

03L-0:on 770420,air Mass Calculation Performed on 770419 Indicated That Significant Leak in Primary Containment Might Exist.Data Point Indicated That VC Air Pressure Had Fallen.No Leak Found,Reactor Cooled Down
type: Subject
label: 05000029/LER-1977-021-03, /03L-0:on 770420,air Mass Calculation Performed on 770419 Indicated That Significant Leak in Primary Containment Might Exist.Data Point Indicated That VC Air Pressure Had Fallen.No Leak Found,Reactor Cooled Down
page: https://kanterella.com/05000029/LER-2D1977-2D021-2D03-2C_/03L-2D0-3Aon_770420-2Cair_Mass_Calculation_Performed_on_770419_Indicated_That_Significant_Leak_in_Primary_Containment_Might_Exist.Data_Point_I…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-021-03, /03L-0:on 770420,air Mass Calculation Performed on 770419 Indicated That Significant Leak in Primary Containment Might Exist.Data Point Indicated That VC Air Pressure Had Fallen.No Leak Found,Reactor Cooled Down

03L-0:on 770114,charging Pump 2 Discharge Pressure Failed to Meet Tech Specs Surveillance Requirement. Caused by Requirements Based on Centrifugal Instead of Reciprocating Type Pump.Proposed Change Initiated
type: Subject
label: 05000029/LER-1977-004-03, /03L-0:on 770114,charging Pump 2 Discharge Pressure Failed to Meet Tech Specs Surveillance Requirement. Caused by Requirements Based on Centrifugal Instead of Reciprocating Type Pump.Proposed Change Initiated
page: https://kanterella.com/05000029/LER-2D1977-2D004-2D03-2C_/03L-2D0-3Aon_770114-2Ccharging_Pump_2_Discharge_Pressure_Failed_to_Meet_Tech_Specs_Surveillance_Requirement._Caused_by_Requirements_Based_on_C…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-004-03, /03L-0:on 770114,charging Pump 2 Discharge Pressure Failed to Meet Tech Specs Surveillance Requirement. Caused by Requirements Based on Centrifugal Instead of Reciprocating Type Pump.Proposed Change Initiated

03L-0:on 770307,following Power Reduction to Identify Plug Leaking Condenser Tube,Chlorides in Steam Generators 1 & 4 Exceeded Tech Specs Limits.Caused by Chloride Concentration Buildup in Steam Generator
type: Subject
label: 05000029/LER-1977-013-03, /03L-0:on 770307,following Power Reduction to Identify Plug Leaking Condenser Tube,Chlorides in Steam Generators 1 & 4 Exceeded Tech Specs Limits.Caused by Chloride Concentration Buildup in Steam Generator
page: https://kanterella.com/05000029/LER-2D1977-2D013-2D03-2C_/03L-2D0-3Aon_770307-2Cfollowing_Power_Reduction_to_Identify_Plug_Leaking_Condenser_Tube-2CChlorides_in_Steam_Generators_1_-26_4_Exceeded_Tech_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-013-03, /03L-0:on 770307,following Power Reduction to Identify Plug Leaking Condenser Tube,Chlorides in Steam Generators 1 & 4 Exceeded Tech Specs Limits.Caused by Chloride Concentration Buildup in Steam Generator

03L-0:on 770421,steam Generator Chloride Concentration Increased to Max Level of 0.8 Ppm in All Four Steam Generators,Exceeding Tech Specs Limits.Caused by Chloride Entering Steam Generator in Feedwater Areas
type: Subject
label: 05000029/LER-1977-022-03, /03L-0:on 770421,steam Generator Chloride Concentration Increased to Max Level of 0.8 Ppm in All Four Steam Generators,Exceeding Tech Specs Limits.Caused by Chloride Entering Steam Generator in Feedwater Areas
page: https://kanterella.com/05000029/LER-2D1977-2D022-2D03-2C_/03L-2D0-3Aon_770421-2Csteam_Generator_Chloride_Concentration_Increased_to_Max_Level_of_0.8_Ppm_in_All_Four_Steam_Generators-2CExceeding_Tech_S…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-022-03, /03L-0:on 770421,steam Generator Chloride Concentration Increased to Max Level of 0.8 Ppm in All Four Steam Generators,Exceeding Tech Specs Limits.Caused by Chloride Entering Steam Generator in Feedwater Areas

03L-0:on 770308,iodine Channel of Primary Vent Stack Radiation Monitoring Sys Failed to Meet High Level Count Rate Acceptance Criteria.Caused by Voltage Drift. Voltage Adjusted
type: Subject
label: 05000029/LER-1977-014-03, /03L-0:on 770308,iodine Channel of Primary Vent Stack Radiation Monitoring Sys Failed to Meet High Level Count Rate Acceptance Criteria.Caused by Voltage Drift. Voltage Adjusted
page: https://kanterella.com/05000029/LER-2D1977-2D014-2D03-2C_/03L-2D0-3Aon_770308-2Ciodine_Channel_of_Primary_Vent_Stack_Radiation_Monitoring_Sys_Failed_to_Meet_High_Level_Count_Rate_Acceptance_Criteria.C…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1977-014-03, /03L-0:on 770308,iodine Channel of Primary Vent Stack Radiation Monitoring Sys Failed to Meet High Level Count Rate Acceptance Criteria.Caused by Voltage Drift. Voltage Adjusted

01T-0:on 800806,found Hourly Fire Check of Auxiliary Offgas Bldg Not Performed on Continuous Basis Since 800707 While Fire Detection Units Were Inoperable. Caused by Communications Lapse Between Personnel
type: Subject
label: 05000293/LER-1980-036-01, /01T-0:on 800806,found Hourly Fire Check of Auxiliary Offgas Bldg Not Performed on Continuous Basis Since 800707 While Fire Detection Units Were Inoperable. Caused by Communications Lapse Between Personnel
page: https://kanterella.com/05000293/LER-2D1980-2D036-2D01-2C_/01T-2D0-3Aon_800806-2Cfound_Hourly_Fire_Check_of_Auxiliary_Offgas_Bldg_Not_Performed_on_Continuous_Basis_Since_800707_While_Fire_Detection_Uni…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000293/LER-1980-036-01, /01T-0:on 800806,found Hourly Fire Check of Auxiliary Offgas Bldg Not Performed on Continuous Basis Since 800707 While Fire Detection Units Were Inoperable. Caused by Communications Lapse Between Personnel

03L-0:on 800721,CEAC 1 Failed During Mode 1 Operation.Cause Not Determined.Ceac Sys Software Reloaded, Periodic Tests Performed & Failure Indications Returned to Normal.Ceac Returned to Operable Status on All Channels
type: Subject
label: 05000368/LER-1980-053-03, /03L-0:on 800721,CEAC 1 Failed During Mode 1 Operation.Cause Not Determined.Ceac Sys Software Reloaded, Periodic Tests Performed & Failure Indications Returned to Normal.Ceac Returned to Operable Status on All Channels
page: https://kanterella.com/05000368/LER-2D1980-2D053-2D03-2C_/03L-2D0-3Aon_800721-2CCEAC_1_Failed_During_Mode_1_Operation.Cause_Not_Determined.Ceac_Sys_Software_Reloaded-2C_Periodic_Tests_Performed_-26_Fa…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000368/LER-1980-053-03, /03L-0:on 800721,CEAC 1 Failed During Mode 1 Operation.Cause Not Determined.Ceac Sys Software Reloaded, Periodic Tests Performed & Failure Indications Returned to Normal.Ceac Returned to Operable Status on All Channels

01T-0:on 760617,during Refueling mode,1,600 AMP Frame Size Tie Breaker 6T7 Opened de-energizing Bus 6 & Allowing 1B RHR Pump to Lose Power.Caused by Inadequate Procedures Re 480 Volt Bus Tie Breaker Overload
type: Subject
label: 05000213/LER-1976-012-01, /01T-0:on 760617,during Refueling mode,1,600 AMP Frame Size Tie Breaker 6T7 Opened de-energizing Bus 6 & Allowing 1B RHR Pump to Lose Power.Caused by Inadequate Procedures Re 480 Volt Bus Tie Breaker Overload
page: https://kanterella.com/05000213/LER-2D1976-2D012-2D01-2C_/01T-2D0-3Aon_760617-2Cduring_Refueling_mode-2C1-2C600_AMP_Frame_Size_Tie_Breaker_6T7_Opened_de-2Denergizing_Bus_6_-26_Allowing_1B_RHR_Pump_to_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1976-012-01, /01T-0:on 760617,during Refueling mode,1,600 AMP Frame Size Tie Breaker 6T7 Opened de-energizing Bus 6 & Allowing 1B RHR Pump to Lose Power.Caused by Inadequate Procedures Re 480 Volt Bus Tie Breaker Overload

05000213/LER-1976-004-04, /04L-1:on 760202,Jan 1976 Monthly Impingement Loss for Spottail Shiners Exceeded ETS Limits.No Corrective Action Taken
type: Subject
page: https://kanterella.com/05000213/LER-2D1976-2D004-2D04-2C_/04L-2D1-3Aon_760202-2CJan_1976_Monthly_Impingement_Loss_for_Spottail_Shiners_Exceeded_ETS_Limits.No_Corrective_Action_Taken
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1976-004-04, /04L-1:on 760202,Jan 1976 Monthly Impingement Loss for Spottail Shiners Exceeded ETS Limits.No Corrective Action Taken

Steam Generator Blowdown Line & Svc Water Effluent Line.Caused by Pipe Matl Deterioration from Steam Generator Blowdown Stream & Cold Svc Water Interaction
type: Subject
label: 05000213/LER-1977-001-03, /03L-0:on 761214,small Leak Found at Juncture of Waste Liquid/Steam Generator Blowdown Line & Svc Water Effluent Line.Caused by Pipe Matl Deterioration from Steam Generator Blowdown Stream & Cold Svc Water Interaction
page: https://kanterella.com/05000213/LER-2D1977-2D001-2D03-2C_/03L-2D0-3Aon_761214-2Csmall_Leak_Found_at_Juncture_of_Waste_Liquid/Steam_Generator_Blowdown_Line_-26_Svc_Water_Effluent_Line.Caused_by_Pipe_Ma…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1977-001-03, /03L-0:on 761214,small Leak Found at Juncture of Waste Liquid/Steam Generator Blowdown Line & Svc Water Effluent Line.Caused by Pipe Matl Deterioration from Steam Generator Blowdown Stream & Cold Svc Water Interaction

01T-0:on 760626,power to Residual Heat Removal Pump Interrupted for 30-s.Caused by Automatic Circuit Breaker Trip on Station Svc Transformer Due to Spurious 115 Kv Fault Signal.Backup Sensing Circuits to Be Changed
type: Subject
label: 05000213/LER-1976-014, /01T-0:on 760626,power to Residual Heat Removal Pump Interrupted for 30-s.Caused by Automatic Circuit Breaker Trip on Station Svc Transformer Due to Spurious 115 Kv Fault Signal.Backup Sensing Circuits to Be Changed
page: https://kanterella.com/05000213/LER-2D1976-2D014-2C_/01T-2D0-3Aon_760626-2Cpower_to_Residual_Heat_Removal_Pump_Interrupted_for_30-2Ds.Caused_by_Automatic_Circuit_Breaker_Trip_on_Station_Svc_Transforme…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1976-014, /01T-0:on 760626,power to Residual Heat Removal Pump Interrupted for 30-s.Caused by Automatic Circuit Breaker Trip on Station Svc Transformer Due to Spurious 115 Kv Fault Signal.Backup Sensing Circuits to Be Changed

Spare & Rebuilt
type: Subject
label: 05000213/LER-1976-019-03, /03L-0:on 761001,concentrated Boric Acid Pump 1A (Canned Motor) Developed Leak in Can.Caused by Wiped Pump Bearings Allowing Rotor to Drop & Wear Hole Through Can.Pump Replaced W/Spare & Rebuilt
page: https://kanterella.com/05000213/LER-2D1976-2D019-2D03-2C_/03L-2D0-3Aon_761001-2Cconcentrated_Boric_Acid_Pump_1A_-28Canned_Motor-29_Developed_Leak_in_Can.Caused_by_Wiped_Pump_Bearings_Allowing_Rotor_to…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1976-019-03, /03L-0:on 761001,concentrated Boric Acid Pump 1A (Canned Motor) Developed Leak in Can.Caused by Wiped Pump Bearings Allowing Rotor to Drop & Wear Hole Through Can.Pump Replaced W/Spare & Rebuilt

05000213/LER-1976-003-03, /03L-0:on 760202,Channel 33 Overpower Trip Setpoint Exceeded Limit.Caused by Normal Instrument Drift. Setpoint Reset to Allow for Drift W/O Exceeding Limit
type: Subject
page: https://kanterella.com/05000213/LER-2D1976-2D003-2D03-2C_/03L-2D0-3Aon_760202-2CChannel_33_Overpower_Trip_Setpoint_Exceeded_Limit.Caused_by_Normal_Instrument_Drift._Setpoint_Reset_to_Allow_for_Drift_W…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1976-003-03, /03L-0:on 760202,Channel 33 Overpower Trip Setpoint Exceeded Limit.Caused by Normal Instrument Drift. Setpoint Reset to Allow for Drift W/O Exceeding Limit

03L-0:on 760720,loop 2 Steam Line Flow Indicator Failed Low,Annunciating on Main Control Board.Caused by Leaking Sensing Line cross-threaded Fitting on High Side of Loop 2 Pressure Transmitter.Damage Fitting Replaced
type: Subject
label: 05000213/LER-1976-017-03, /03L-0:on 760720,loop 2 Steam Line Flow Indicator Failed Low,Annunciating on Main Control Board.Caused by Leaking Sensing Line cross-threaded Fitting on High Side of Loop 2 Pressure Transmitter.Damage Fitting Replaced
page: https://kanterella.com/05000213/LER-2D1976-2D017-2D03-2C_/03L-2D0-3Aon_760720-2Cloop_2_Steam_Line_Flow_Indicator_Failed_Low-2CAnnunciating_on_Main_Control_Board.Caused_by_Leaking_Sensing_Line_cross-2D…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1976-017-03, /03L-0:on 760720,loop 2 Steam Line Flow Indicator Failed Low,Annunciating on Main Control Board.Caused by Leaking Sensing Line cross-threaded Fitting on High Side of Loop 2 Pressure Transmitter.Damage Fitting Replaced

03L-0:on 760203,emergency Diesel EG-2B Tripped on Overspeed.Caused by Calibr Tool Left in Injector Rack Following Recent Governor Replacement & Adjustments.Close Adherence to QA Procedures Will Prevent Recurrence
type: Subject
label: 05000213/LER-1976-006-03, /03L-0:on 760203,emergency Diesel EG-2B Tripped on Overspeed.Caused by Calibr Tool Left in Injector Rack Following Recent Governor Replacement & Adjustments.Close Adherence to QA Procedures Will Prevent Recurrence
page: https://kanterella.com/05000213/LER-2D1976-2D006-2D03-2C_/03L-2D0-3Aon_760203-2Cemergency_Diesel_EG-2D2B_Tripped_on_Overspeed.Caused_by_Calibr_Tool_Left_in_Injector_Rack_Following_Recent_Governor_Repl…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1976-006-03, /03L-0:on 760203,emergency Diesel EG-2B Tripped on Overspeed.Caused by Calibr Tool Left in Injector Rack Following Recent Governor Replacement & Adjustments.Close Adherence to QA Procedures Will Prevent Recurrence

03L-0:on 760629,abnormal Pressure Noted on Waste Gas Decay Tank TK-6013.Caused by Rupture Disk Rupture at 52 Psig,Rather than 225 Psig.Rupture Disk Replaced & Plant Design Change Prepared to Relocate Rupture Disk
type: Subject
label: 05000213/LER-1976-015-03, /03L-0:on 760629,abnormal Pressure Noted on Waste Gas Decay Tank TK-6013.Caused by Rupture Disk Rupture at 52 Psig,Rather than 225 Psig.Rupture Disk Replaced & Plant Design Change Prepared to Relocate Rupture Disk
page: https://kanterella.com/05000213/LER-2D1976-2D015-2D03-2C_/03L-2D0-3Aon_760629-2Cabnormal_Pressure_Noted_on_Waste_Gas_Decay_Tank_TK-2D6013.Caused_by_Rupture_Disk_Rupture_at_52_Psig-2CRather_than_225_Ps…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000213/LER-1976-015-03, /03L-0:on 760629,abnormal Pressure Noted on Waste Gas Decay Tank TK-6013.Caused by Rupture Disk Rupture at 52 Psig,Rather than 225 Psig.Rupture Disk Replaced & Plant Design Change Prepared to Relocate Rupture Disk

ML19343C277
type: Subject
page: https://kanterella.com/ML19343C277
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19343C277

ML19345G093
type: Subject
page: https://kanterella.com/ML19345G093
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19345G093

01T-0:on 760513,review of ECCS Analysis Found Error in Accident Analysis.Caused by Error in Assumption of Accident Analysis.Reanalysis Performed.Proposed Change to Tech Specs Submitted
type: Subject
label: 05000029/LER-1976-003-01, /01T-0:on 760513,review of ECCS Analysis Found Error in Accident Analysis.Caused by Error in Assumption of Accident Analysis.Reanalysis Performed.Proposed Change to Tech Specs Submitted
page: https://kanterella.com/05000029/LER-2D1976-2D003-2D01-2C_/01T-2D0-3Aon_760513-2Creview_of_ECCS_Analysis_Found_Error_in_Accident_Analysis.Caused_by_Error_in_Assumption_of_Accident_Analysis.Reanalysis_P…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1976-003-01, /01T-0:on 760513,review of ECCS Analysis Found Error in Accident Analysis.Caused by Error in Assumption of Accident Analysis.Reanalysis Performed.Proposed Change to Tech Specs Submitted

03L-0:on 801017,during Normal Operation,Auxiliary Switch Failed to Return to Normal Position When 4160-volt Breaker Egi Tripped.Caused by Excessive Friction in Switch Operating Mechanism.Switch & Linkage Will Be Replaced
type: Subject
label: 05000298/LER-1980-040-03, /03L-0:on 801017,during Normal Operation,Auxiliary Switch Failed to Return to Normal Position When 4160-volt Breaker Egi Tripped.Caused by Excessive Friction in Switch Operating Mechanism.Switch & Linkage Will Be Replaced
page: https://kanterella.com/05000298/LER-2D1980-2D040-2D03-2C_/03L-2D0-3Aon_801017-2Cduring_Normal_Operation-2CAuxiliary_Switch_Failed_to_Return_to_Normal_Position_When_4160-2Dvolt_Breaker_Egi_Tripped.Caus…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000298/LER-1980-040-03, /03L-0:on 801017,during Normal Operation,Auxiliary Switch Failed to Return to Normal Position When 4160-volt Breaker Egi Tripped.Caused by Excessive Friction in Switch Operating Mechanism.Switch & Linkage Will Be Replaced

01T-0:on 760830,during Review of Core 12 Analysis,Error Found in Figure 8-1 of Tech Specs.Caused by Gamma Heating Correction Omitted by Error in Application of Computer Codes
type: Subject
label: 05000029/LER-1976-010-01, /01T-0:on 760830,during Review of Core 12 Analysis,Error Found in Figure 8-1 of Tech Specs.Caused by Gamma Heating Correction Omitted by Error in Application of Computer Codes
page: https://kanterella.com/05000029/LER-2D1976-2D010-2D01-2C_/01T-2D0-3Aon_760830-2Cduring_Review_of_Core_12_Analysis-2CError_Found_in_Figure_8-2D1_of_Tech_Specs.Caused_by_Gamma_Heating_Correction_Omitted…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1976-010-01, /01T-0:on 760830,during Review of Core 12 Analysis,Error Found in Figure 8-1 of Tech Specs.Caused by Gamma Heating Correction Omitted by Error in Application of Computer Codes

03L-0:on 810129,during Surveillance Testing, HPCI Sys Initiation Reactor Level Switch Actuated at Simulated Level Above Tech Spec.Caused by Components Slipping Due to Loose Set Screws on Actuator Pointers
type: Subject
label: 05000324/LER-1981-001-03, /03L-0:on 810129,during Surveillance Testing, HPCI Sys Initiation Reactor Level Switch Actuated at Simulated Level Above Tech Spec.Caused by Components Slipping Due to Loose Set Screws on Actuator Pointers
page: https://kanterella.com/05000324/LER-2D1981-2D001-2D03-2C_/03L-2D0-3Aon_810129-2Cduring_Surveillance_Testing-2C_HPCI_Sys_Initiation_Reactor_Level_Switch_Actuated_at_Simulated_Level_Above_Tech_Spec.Caus…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000324/LER-1981-001-03, /03L-0:on 810129,during Surveillance Testing, HPCI Sys Initiation Reactor Level Switch Actuated at Simulated Level Above Tech Spec.Caused by Components Slipping Due to Loose Set Screws on Actuator Pointers

ML20058L540
type: Subject
page: https://kanterella.com/ML20058L540
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML20058L540

ML19343B104
type: Subject
page: https://kanterella.com/ML19343B104
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19343B104

ML19343B105
type: Subject
page: https://kanterella.com/ML19343B105
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19343B105

ML19343B096
type: Subject
page: https://kanterella.com/ML19343B096
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19343B096

ML19343B108
type: Subject
page: https://kanterella.com/ML19343B108
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19343B108

ML19343B094
type: Subject
page: https://kanterella.com/ML19343B094
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19343B094

ML19345G096
type: Subject
page: https://kanterella.com/ML19345G096
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19345G096

ML19345A543
type: Subject
page: https://kanterella.com/ML19345A543
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19345A543

G Delta P Trip Was Bypassed.Caused by Failed Power Supply on Bistable Card.Bistable Card Replaced & Plant Protection Sys Tested
type: Subject
label: 05000368/LER-1980-033-03, /03L-0:on 800530,during Mode 1 Operation,Plant Protection Sys C High S/G Delta P Trip Was Bypassed.Caused by Failed Power Supply on Bistable Card.Bistable Card Replaced & Plant Protection Sys Tested
page: https://kanterella.com/05000368/LER-2D1980-2D033-2D03-2C_/03L-2D0-3Aon_800530-2Cduring_Mode_1_Operation-2CPlant_Protection_Sys_C_High_S/G_Delta_P_Trip_Was_Bypassed.Caused_by_Failed_Power_Supply_on_Bis…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000368/LER-1980-033-03, /03L-0:on 800530,during Mode 1 Operation,Plant Protection Sys C High S/G Delta P Trip Was Bypassed.Caused by Failed Power Supply on Bistable Card.Bistable Card Replaced & Plant Protection Sys Tested

ML19317F784
type: Subject
page: https://kanterella.com/ML19317F784
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317F784

ML19317G016
type: Subject
page: https://kanterella.com/ML19317G016
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317G016

ML19317G046
type: Subject
page: https://kanterella.com/ML19317G046
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317G046

03L-0:on 780621,decay Heat Removal Flow Control Valve DHV-111 Failed to Respond to Open Command After Being Closed to Check for Low Pressure Injection.No Apparent Cause.Remote Control Immediately re-established
type: Subject
label: 05000302/LER-1978-034-03, /03L-0:on 780621,decay Heat Removal Flow Control Valve DHV-111 Failed to Respond to Open Command After Being Closed to Check for Low Pressure Injection.No Apparent Cause.Remote Control Immediately re-established
page: https://kanterella.com/05000302/LER-2D1978-2D034-2D03-2C_/03L-2D0-3Aon_780621-2Cdecay_Heat_Removal_Flow_Control_Valve_DHV-2D111_Failed_to_Respond_to_Open_Command_After_Being_Closed_to_Check_for_Low_Pr…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000302/LER-1978-034-03, /03L-0:on 780621,decay Heat Removal Flow Control Valve DHV-111 Failed to Respond to Open Command After Being Closed to Check for Low Pressure Injection.No Apparent Cause.Remote Control Immediately re-established

03L-0 on 790212:during Normal Operation,Snubber Support for C Steam Generator Atmosphere Discharge Line Found Damaged.Caused by Use of Support as Anchor for Chain Fall.Support Replaced
type: Subject
label: 05000338/LER-1979-009-03, /03L-0 on 790212:during Normal Operation,Snubber Support for C Steam Generator Atmosphere Discharge Line Found Damaged.Caused by Use of Support as Anchor for Chain Fall.Support Replaced
page: https://kanterella.com/05000338/LER-2D1979-2D009-2D03-2C_/03L-2D0_on_790212-3Aduring_Normal_Operation-2CSnubber_Support_for_C_Steam_Generator_Atmosphere_Discharge_Line_Found_Damaged.Caused_by_Use_of_S…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000338/LER-1979-009-03, /03L-0 on 790212:during Normal Operation,Snubber Support for C Steam Generator Atmosphere Discharge Line Found Damaged.Caused by Use of Support as Anchor for Chain Fall.Support Replaced

03L-0:on 800206,during Normal Shift Turnover, Discovered RIP Valves for Containment Particulate & Gaseous Radioactivity Monitoring Sys Closing.Caused by Isolation of Valves During Penetrant Test
type: Subject
label: 05000325/LER-1980-020-03, /03L-0:on 800206,during Normal Shift Turnover, Discovered RIP Valves for Containment Particulate & Gaseous Radioactivity Monitoring Sys Closing.Caused by Isolation of Valves During Penetrant Test
page: https://kanterella.com/05000325/LER-2D1980-2D020-2D03-2C_/03L-2D0-3Aon_800206-2Cduring_Normal_Shift_Turnover-2C_Discovered_RIP_Valves_for_Containment_Particulate_-26_Gaseous_Radioactivity_Monitoring_S…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000325/LER-1980-020-03, /03L-0:on 800206,during Normal Shift Turnover, Discovered RIP Valves for Containment Particulate & Gaseous Radioactivity Monitoring Sys Closing.Caused by Isolation of Valves During Penetrant Test

03L-0:on 800114,while Performing Surveillance Test,Hydrogen Purge Supply Isolation Valve CV-7444 Failed to Close.Caused by Oxidation on Torque Switch Contacts, Resulting in High Resistance to Closure.Contacts Cleaned
type: Subject
label: 05000313/LER-1980-001-03, /03L-0:on 800114,while Performing Surveillance Test,Hydrogen Purge Supply Isolation Valve CV-7444 Failed to Close.Caused by Oxidation on Torque Switch Contacts, Resulting in High Resistance to Closure.Contacts Cleaned
page: https://kanterella.com/05000313/LER-2D1980-2D001-2D03-2C_/03L-2D0-3Aon_800114-2Cwhile_Performing_Surveillance_Test-2CHydrogen_Purge_Supply_Isolation_Valve_CV-2D7444_Failed_to_Close.Caused_by_Oxidation…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000313/LER-1980-001-03, /03L-0:on 800114,while Performing Surveillance Test,Hydrogen Purge Supply Isolation Valve CV-7444 Failed to Close.Caused by Oxidation on Torque Switch Contacts, Resulting in High Resistance to Closure.Contacts Cleaned

03L-0:on 800118,while Performing Radioactive Source Inventory & Leak Testing Procedure,Discovered That 121.8 Uci of Cs-137 Sealed Source Had Not Been Inventoried or Leak Tested Since 781213.Caused by Procedural Failure
type: Subject
label: 05000029/LER-1980-003-03, /03L-0:on 800118,while Performing Radioactive Source Inventory & Leak Testing Procedure,Discovered That 121.8 Uci of Cs-137 Sealed Source Had Not Been Inventoried or Leak Tested Since 781213.Caused by Procedural Failure
page: https://kanterella.com/05000029/LER-2D1980-2D003-2D03-2C_/03L-2D0-3Aon_800118-2Cwhile_Performing_Radioactive_Source_Inventory_-26_Leak_Testing_Procedure-2CDiscovered_That_121.8_Uci_of_Cs-2D137_Sealed_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000029/LER-1980-003-03, /03L-0:on 800118,while Performing Radioactive Source Inventory & Leak Testing Procedure,Discovered That 121.8 Uci of Cs-137 Sealed Source Had Not Been Inventoried or Leak Tested Since 781213.Caused by Procedural Failure

ML19317F900
type: Subject
page: https://kanterella.com/ML19317F900
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317F900

ML19317G035
type: Subject
page: https://kanterella.com/ML19317G035
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317G035

ML19317G017
type: Subject
page: https://kanterella.com/ML19317G017
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317G017

ML19317F962
type: Subject
page: https://kanterella.com/ML19317F962
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317F962

03L-0 on 790803:during Normal Surveillance of Control panel,2-CO-CR24 Points 1-4 Printed Erratically. Caused by Air Leakage Around Cell.Duct Seal Applied Around Cell Penetrations.Cells to Be Replaced in Sept 1979
type: Subject
label: 05000324/LER-1979-065-03, /03L-0 on 790803:during Normal Surveillance of Control panel,2-CO-CR24 Points 1-4 Printed Erratically. Caused by Air Leakage Around Cell.Duct Seal Applied Around Cell Penetrations.Cells to Be Replaced in Sept 1979
page: https://kanterella.com/05000324/LER-2D1979-2D065-2D03-2C_/03L-2D0_on_790803-3Aduring_Normal_Surveillance_of_Control_panel-2C2-2DCO-2DCR24_Points_1-2D4_Printed_Erratically._Caused_by_Air_Leakage_Around…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000324/LER-1979-065-03, /03L-0 on 790803:during Normal Surveillance of Control panel,2-CO-CR24 Points 1-4 Printed Erratically. Caused by Air Leakage Around Cell.Duct Seal Applied Around Cell Penetrations.Cells to Be Replaced in Sept 1979

03L-0 on 790708:core Protection Calculator B Failed Causing Low DNBR & High Linear Power Density Trips in Plant Protection Sys B.Caused by Lost Bit in High Core Memory Due to Failed Air Conditioner in Computer Room
type: Subject
label: 05000368/LER-1979-052-03, /03L-0 on 790708:core Protection Calculator B Failed Causing Low DNBR & High Linear Power Density Trips in Plant Protection Sys B.Caused by Lost Bit in High Core Memory Due to Failed Air Conditioner in Computer Room
page: https://kanterella.com/05000368/LER-2D1979-2D052-2D03-2C_/03L-2D0_on_790708-3Acore_Protection_Calculator_B_Failed_Causing_Low_DNBR_-26_High_Linear_Power_Density_Trips_in_Plant_Protection_Sys_B.Caused_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000368/LER-1979-052-03, /03L-0 on 790708:core Protection Calculator B Failed Causing Low DNBR & High Linear Power Density Trips in Plant Protection Sys B.Caused by Lost Bit in High Core Memory Due to Failed Air Conditioner in Computer Room

03L-0 on 790312:containment Vacuum Pump Suction Valve TV-CV150A Would Not Remain Closed When Operated from Control Room.Caused by Relay Sticking in Energized Position.Relay Repaired & Tested Satisfactorily
type: Subject
label: 05000338/LER-1979-032-03, /03L-0 on 790312:containment Vacuum Pump Suction Valve TV-CV150A Would Not Remain Closed When Operated from Control Room.Caused by Relay Sticking in Energized Position.Relay Repaired & Tested Satisfactorily
page: https://kanterella.com/05000338/LER-2D1979-2D032-2D03-2C_/03L-2D0_on_790312-3Acontainment_Vacuum_Pump_Suction_Valve_TV-2DCV150A_Would_Not_Remain_Closed_When_Operated_from_Control_Room.Caused_by_Relay_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000338/LER-1979-032-03, /03L-0 on 790312:containment Vacuum Pump Suction Valve TV-CV150A Would Not Remain Closed When Operated from Control Room.Caused by Relay Sticking in Energized Position.Relay Repaired & Tested Satisfactorily

01T:on 770726,during Normal Operation,Radiation Monitor RM-A2 Failed & Atmosphere Sampling of Reactor Bldg Not Performed.Caused by Improper Reassembly Following 770725 Surveillance Test.Monitor Repaired.Procedure to Be Revi
type: Subject
label: 05000289/LER-1977-021-01, /01T:on 770726,during Normal Operation,Radiation Monitor RM-A2 Failed & Atmosphere Sampling of Reactor Bldg Not Performed.Caused by Improper Reassembly Following 770725 Surveillance Test.Monitor Repaired.Procedure to Be Revi
page: https://kanterella.com/05000289/LER-2D1977-2D021-2D01-2C_/01T-3Aon_770726-2Cduring_Normal_Operation-2CRadiation_Monitor_RM-2DA2_Failed_-26_Atmosphere_Sampling_of_Reactor_Bldg_Not_Performed.Caused_by_I…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000289/LER-1977-021-01, /01T:on 770726,during Normal Operation,Radiation Monitor RM-A2 Failed & Atmosphere Sampling of Reactor Bldg Not Performed.Caused by Improper Reassembly Following 770725 Surveillance Test.Monitor Repaired.Procedure to Be Revi

04T:on 770523,during Normal Operation,Waste Concentration in River Water Discharge Found in Excess of Designated Max.Caused by Slug of Suspended Solids Breaking Loose During Sampling.Discharge Terminated
type: Subject
label: 05000289/LER-1977-013-04, /04T:on 770523,during Normal Operation,Waste Concentration in River Water Discharge Found in Excess of Designated Max.Caused by Slug of Suspended Solids Breaking Loose During Sampling.Discharge Terminated
page: https://kanterella.com/05000289/LER-2D1977-2D013-2D04-2C_/04T-3Aon_770523-2Cduring_Normal_Operation-2CWaste_Concentration_in_River_Water_Discharge_Found_in_Excess_of_Designated_Max.Caused_by_Slug_of_S…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000289/LER-1977-013-04, /04T:on 770523,during Normal Operation,Waste Concentration in River Water Discharge Found in Excess of Designated Max.Caused by Slug of Suspended Solids Breaking Loose During Sampling.Discharge Terminated

01T:on 770926,during Heatup Operation Both Doors of Reactor Bldg Emergency Personnel Access Hatch Open Simultaneously.Caused by Failure of Interlock,Poor Hatch Design & Operator Error.Addl Interlock to Be Added
type: Subject
label: 05000289/LER-1977-023-01, /01T:on 770926,during Heatup Operation Both Doors of Reactor Bldg Emergency Personnel Access Hatch Open Simultaneously.Caused by Failure of Interlock,Poor Hatch Design & Operator Error.Addl Interlock to Be Added
page: https://kanterella.com/05000289/LER-2D1977-2D023-2D01-2C_/01T-3Aon_770926-2Cduring_Heatup_Operation_Both_Doors_of_Reactor_Bldg_Emergency_Personnel_Access_Hatch_Open_Simultaneously.Caused_by_Failure_of…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000289/LER-1977-023-01, /01T:on 770926,during Heatup Operation Both Doors of Reactor Bldg Emergency Personnel Access Hatch Open Simultaneously.Caused by Failure of Interlock,Poor Hatch Design & Operator Error.Addl Interlock to Be Added

4T:on 770719,during Passage of Storm Front,Station River Water Discharge Temp Fell to in Excess of 3 F Below Inlet Temp.Caused by Storm Front.A & B Mechanical Draft Cooling Fans Stopped
type: Subject
label: 05000289/LER-1977-020-04, /4T:on 770719,during Passage of Storm Front,Station River Water Discharge Temp Fell to in Excess of 3 F Below Inlet Temp.Caused by Storm Front.A & B Mechanical Draft Cooling Fans Stopped
page: https://kanterella.com/05000289/LER-2D1977-2D020-2D04-2C_/4T-3Aon_770719-2Cduring_Passage_of_Storm_Front-2CStation_River_Water_Discharge_Temp_Fell_to_in_Excess_of_3_F_Below_Inlet_Temp.Caused_by_Storm_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000289/LER-1977-020-04, /4T:on 770719,during Passage of Storm Front,Station River Water Discharge Temp Fell to in Excess of 3 F Below Inlet Temp.Caused by Storm Front.A & B Mechanical Draft Cooling Fans Stopped

03L:on 770713,during Normal Operation,Leak in Miscellaneous Waste Evaporator Feed Tank Immersion Heater Shorted Out Heater & Feed Pump.Caused by Leak in Temp Probe on Heater.Heater Replaced & Operating Procedure Modified
type: Subject
label: 05000289/LER-1977-019-03, /03L:on 770713,during Normal Operation,Leak in Miscellaneous Waste Evaporator Feed Tank Immersion Heater Shorted Out Heater & Feed Pump.Caused by Leak in Temp Probe on Heater.Heater Replaced & Operating Procedure Modified
page: https://kanterella.com/05000289/LER-2D1977-2D019-2D03-2C_/03L-3Aon_770713-2Cduring_Normal_Operation-2CLeak_in_Miscellaneous_Waste_Evaporator_Feed_Tank_Immersion_Heater_Shorted_Out_Heater_-26_Feed_Pump…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000289/LER-1977-019-03, /03L:on 770713,during Normal Operation,Leak in Miscellaneous Waste Evaporator Feed Tank Immersion Heater Shorted Out Heater & Feed Pump.Caused by Leak in Temp Probe on Heater.Heater Replaced & Operating Procedure Modified

05000333/LER-1979-029, Forwards LER 79-029/03L-0
type: Subject
page: https://kanterella.com/05000333/LER-2D1979-2D029-2C_Forwards_LER_79-2D029/03L-2D0
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000333/LER-1979-029, Forwards LER 79-029/03L-0

05000325/LER-1979-007-03, /03L-0 on 790109:during Sys Component Test, Residual Heat Removal Pump D Would Not Start.Caused by Motor Switch Being in Off Position
type: Subject
page: https://kanterella.com/05000325/LER-2D1979-2D007-2D03-2C_/03L-2D0_on_790109-3Aduring_Sys_Component_Test-2C_Residual_Heat_Removal_Pump_D_Would_Not_Start.Caused_by_Motor_Switch_Being_in_Off_Position
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000325/LER-1979-007-03, /03L-0 on 790109:during Sys Component Test, Residual Heat Removal Pump D Would Not Start.Caused by Motor Switch Being in Off Position

01T-0:on 791228,pH of Effluent from Waste Water Treatment Facility Measured in 4.1-4.77 Range.Caused by Acidic Solution Leak in Waste Neutralization Tank Via Bad Packing Glands.Tank Neutralized
type: Subject
label: 05000295/LER-1979-094-01, /01T-0:on 791228,pH of Effluent from Waste Water Treatment Facility Measured in 4.1-4.77 Range.Caused by Acidic Solution Leak in Waste Neutralization Tank Via Bad Packing Glands.Tank Neutralized
page: https://kanterella.com/05000295/LER-2D1979-2D094-2D01-2C_/01T-2D0-3Aon_791228-2CpH_of_Effluent_from_Waste_Water_Treatment_Facility_Measured_in_4.1-2D4.77_Range.Caused_by_Acidic_Solution_Leak_in_Waste_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000295/LER-1979-094-01, /01T-0:on 791228,pH of Effluent from Waste Water Treatment Facility Measured in 4.1-4.77 Range.Caused by Acidic Solution Leak in Waste Neutralization Tank Via Bad Packing Glands.Tank Neutralized

03L-0:on 791214,while Performing MSIV Closure Timing Surveillance,Ao 1-203-1C Found to Close in 5.2-s. Caused by Varied Speed Control Valve Adjustment on Hydraulic Control Cylinder.Valve Adjusted
type: Subject
label: 05000254/LER-1979-042-03, /03L-0:on 791214,while Performing MSIV Closure Timing Surveillance,Ao 1-203-1C Found to Close in 5.2-s. Caused by Varied Speed Control Valve Adjustment on Hydraulic Control Cylinder.Valve Adjusted
page: https://kanterella.com/05000254/LER-2D1979-2D042-2D03-2C_/03L-2D0-3Aon_791214-2Cwhile_Performing_MSIV_Closure_Timing_Surveillance-2CAo_1-2D203-2D1C_Found_to_Close_in_5.2-2Ds._Caused_by_Varied_Speed_Co…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000254/LER-1979-042-03, /03L-0:on 791214,while Performing MSIV Closure Timing Surveillance,Ao 1-203-1C Found to Close in 5.2-s. Caused by Varied Speed Control Valve Adjustment on Hydraulic Control Cylinder.Valve Adjusted

ML19289F135
type: Subject
page: https://kanterella.com/ML19289F135
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19289F135

03L-1 on 790514:supply Valves 2CV-1039-2 & CV-1076-2 to Steam Generator 2E24B Would Not Respond During Mode 3 Operation.Caused by Blown Fuse & Stuck Relay.Repairs Made & Valves Proven Operable
type: Subject
label: 05000368/LER-1979-037-03, /03L-1 on 790514:supply Valves 2CV-1039-2 & CV-1076-2 to Steam Generator 2E24B Would Not Respond During Mode 3 Operation.Caused by Blown Fuse & Stuck Relay.Repairs Made & Valves Proven Operable
page: https://kanterella.com/05000368/LER-2D1979-2D037-2D03-2C_/03L-2D1_on_790514-3Asupply_Valves_2CV-2D1039-2D2_-26_CV-2D1076-2D2_to_Steam_Generator_2E24B_Would_Not_Respond_During_Mode_3_Operation.Caused_b…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000368/LER-1979-037-03, /03L-1 on 790514:supply Valves 2CV-1039-2 & CV-1076-2 to Steam Generator 2E24B Would Not Respond During Mode 3 Operation.Caused by Blown Fuse & Stuck Relay.Repairs Made & Valves Proven Operable

05000324/LER-1979-059-03, /03L-0 on 790718:discovered Low Fluid Level on Snubber 2E51-40SS87,RCIC Pump Suction.Caused by Leaking Seals.Snubber Replaced
type: Subject
page: https://kanterella.com/05000324/LER-2D1979-2D059-2D03-2C_/03L-2D0_on_790718-3Adiscovered_Low_Fluid_Level_on_Snubber_2E51-2D40SS87-2CRCIC_Pump_Suction.Caused_by_Leaking_Seals.Snubber_Replaced
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000324/LER-1979-059-03, /03L-0 on 790718:discovered Low Fluid Level on Snubber 2E51-40SS87,RCIC Pump Suction.Caused by Leaking Seals.Snubber Replaced

ML19317F973
type: Subject
page: https://kanterella.com/ML19317F973
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317F973

ML19317F971
type: Subject
page: https://kanterella.com/ML19317F971
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317F971

ML19317F970
type: Subject
page: https://kanterella.com/ML19317F970
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317F970

ML19317F838
type: Subject
page: https://kanterella.com/ML19317F838
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317F838

ML19319D816
type: Subject
page: https://kanterella.com/ML19319D816
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19319D816

ML19345A761
type: Subject
page: https://kanterella.com/ML19345A761
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19345A761

ML19317F924
type: Subject
page: https://kanterella.com/ML19317F924
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317F924

ML19317G019
type: Subject
page: https://kanterella.com/ML19317G019
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19317G019

ML19319E301
type: Subject
page: https://kanterella.com/ML19319E301
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: ML19319E301

01T-0:on 800111,during Review for IE Circular 78-08,S&W Found Control Room Air Conditioning Chiller Units Control Panel Not Qualified to Seismic Category I Requirements.Cause Unknown.Vendor Reviewing Components
type: Subject
label: 05000338/LER-1980-008-01, /01T-0:on 800111,during Review for IE Circular 78-08,S&W Found Control Room Air Conditioning Chiller Units Control Panel Not Qualified to Seismic Category I Requirements.Cause Unknown.Vendor Reviewing Components
page: https://kanterella.com/05000338/LER-2D1980-2D008-2D01-2C_/01T-2D0-3Aon_800111-2Cduring_Review_for_IE_Circular_78-2D08-2CS-26W_Found_Control_Room_Air_Conditioning_Chiller_Units_Control_Panel_Not_Qualif…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000338/LER-1980-008-01, /01T-0:on 800111,during Review for IE Circular 78-08,S&W Found Control Room Air Conditioning Chiller Units Control Panel Not Qualified to Seismic Category I Requirements.Cause Unknown.Vendor Reviewing Components

05000281/LER-1975-010-01, /01T:on 750624,svc Water Pump 2-SW-P-4B Developed Seal Leak.Caused by Electrical Short in Motor Operator.Pump Leak & Motor Operator Repaired
type: Subject
page: https://kanterella.com/05000281/LER-2D1975-2D010-2D01-2C_/01T-3Aon_750624-2Csvc_Water_Pump_2-2DSW-2DP-2D4B_Developed_Seal_Leak.Caused_by_Electrical_Short_in_Motor_Operator.Pump_Leak_-26_Motor_Operator…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1975-010-01, /01T:on 750624,svc Water Pump 2-SW-P-4B Developed Seal Leak.Caused by Electrical Short in Motor Operator.Pump Leak & Motor Operator Repaired

05000281/LER-1975-011-01, /01T:on 750630,4 Kv Undervoltage Protection Inoperable.Caused by Blown Fuse.Fuses Replaced
type: Subject
page: https://kanterella.com/05000281/LER-2D1975-2D011-2D01-2C_/01T-3Aon_750630-2C4_Kv_Undervoltage_Protection_Inoperable.Caused_by_Blown_Fuse.Fuses_Replaced
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1975-011-01, /01T:on 750630,4 Kv Undervoltage Protection Inoperable.Caused by Blown Fuse.Fuses Replaced

01T:on 750706:main Steam Line Trip Valve in Steam Line B Closed,Causing Closure of Trip Valves a & C & Reactor Trip.Caused by Faulty Piston O-ring.O-ring Replaced & Air Lines Cleared of Debris
type: Subject
label: 05000281/LER-1975-012-01, /01T:on 750706:main Steam Line Trip Valve in Steam Line B Closed,Causing Closure of Trip Valves a & C & Reactor Trip.Caused by Faulty Piston O-ring.O-ring Replaced & Air Lines Cleared of Debris
page: https://kanterella.com/05000281/LER-2D1975-2D012-2D01-2C_/01T-3Aon_750706-3Amain_Steam_Line_Trip_Valve_in_Steam_Line_B_Closed-2CCausing_Closure_of_Trip_Valves_a_-26_C_-26_Reactor_Trip.Caused_by_Faulty…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1975-012-01, /01T:on 750706:main Steam Line Trip Valve in Steam Line B Closed,Causing Closure of Trip Valves a & C & Reactor Trip.Caused by Faulty Piston O-ring.O-ring Replaced & Air Lines Cleared of Debris

05000280/LER-1975-018-01, /01T:on 750924,loop a Instrumentation Drifted Low. Caused by High Moisture Content in Containment Atmosphere. RTD Will Be Repaired or Replaced
type: Subject
page: https://kanterella.com/05000280/LER-2D1975-2D018-2D01-2C_/01T-3Aon_750924-2Cloop_a_Instrumentation_Drifted_Low._Caused_by_High_Moisture_Content_in_Containment_Atmosphere._RTD_Will_Be_Repaired_or_Repla…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1975-018-01, /01T:on 750924,loop a Instrumentation Drifted Low. Caused by High Moisture Content in Containment Atmosphere. RTD Will Be Repaired or Replaced

05000280/LER-1975-019-01, /01T:on 750925,loop B Temperature Change Instrumentation Drifted Low.Caused by Moisture Content of Containment Atmosphere.Spare RTD Placed in Svc & Shutdown Terminated
type: Subject
page: https://kanterella.com/05000280/LER-2D1975-2D019-2D01-2C_/01T-3Aon_750925-2Cloop_B_Temperature_Change_Instrumentation_Drifted_Low.Caused_by_Moisture_Content_of_Containment_Atmosphere.Spare_RTD_Placed_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1975-019-01, /01T:on 750925,loop B Temperature Change Instrumentation Drifted Low.Caused by Moisture Content of Containment Atmosphere.Spare RTD Placed in Svc & Shutdown Terminated

05000281/LER-1975-017-01, /01T:on 751003,loop C Leg RTD Failed Low,Causing Protection Signals to Fail Low.Caused by Incorrect Ohmic Characteristic of Connected RTD & Spare.Failed Instruments Replaced
type: Subject
page: https://kanterella.com/05000281/LER-2D1975-2D017-2D01-2C_/01T-3Aon_751003-2Cloop_C_Leg_RTD_Failed_Low-2CCausing_Protection_Signals_to_Fail_Low.Caused_by_Incorrect_Ohmic_Characteristic_of_Connected_RTD…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1975-017-01, /01T:on 751003,loop C Leg RTD Failed Low,Causing Protection Signals to Fail Low.Caused by Incorrect Ohmic Characteristic of Connected RTD & Spare.Failed Instruments Replaced

01T:on 751009,steam Generator Level Transmitter Isolation Valve Body Bonnet Leak Wetted Down RPI Cabling, Causing Grounds & Erratic Indication for 24 Different Rods. Caused by Water Spray
type: Subject
label: 05000281/LER-1975-018-01, /01T:on 751009,steam Generator Level Transmitter Isolation Valve Body Bonnet Leak Wetted Down RPI Cabling, Causing Grounds & Erratic Indication for 24 Different Rods. Caused by Water Spray
page: https://kanterella.com/05000281/LER-2D1975-2D018-2D01-2C_/01T-3Aon_751009-2Csteam_Generator_Level_Transmitter_Isolation_Valve_Body_Bonnet_Leak_Wetted_Down_RPI_Cabling-2C_Causing_Grounds_-26_Erratic_In…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1975-018-01, /01T:on 751009,steam Generator Level Transmitter Isolation Valve Body Bonnet Leak Wetted Down RPI Cabling, Causing Grounds & Erratic Indication for 24 Different Rods. Caused by Water Spray

01T:on 750822,Channel II Protection Drifted in Nonconservative Direction.Caused by Incorrect Resistance of Hot Leg Resistance Temp Detector (Rtd).Packing Replaced & RTD Ohmic Characteristic Returned to Normal
type: Subject
label: 05000280/LER-1975-016-01, /01T:on 750822,Channel II Protection Drifted in Nonconservative Direction.Caused by Incorrect Resistance of Hot Leg Resistance Temp Detector (Rtd).Packing Replaced & RTD Ohmic Characteristic Returned to Normal
page: https://kanterella.com/05000280/LER-2D1975-2D016-2D01-2C_/01T-3Aon_750822-2CChannel_II_Protection_Drifted_in_Nonconservative_Direction.Caused_by_Incorrect_Resistance_of_Hot_Leg_Resistance_Temp_Detecto…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1975-016-01, /01T:on 750822,Channel II Protection Drifted in Nonconservative Direction.Caused by Incorrect Resistance of Hot Leg Resistance Temp Detector (Rtd).Packing Replaced & RTD Ohmic Characteristic Returned to Normal

01T:on 750823,low Level Alarm on Boric Acid Tank C Received.Caused by Installation of Carbon Steel Rather than Stainless Steel 304 Flanges & Pipe of Spool Piece.All Improper Installations Will Be Replaced
type: Subject
label: 05000281/LER-1975-016-01, /01T:on 750823,low Level Alarm on Boric Acid Tank C Received.Caused by Installation of Carbon Steel Rather than Stainless Steel 304 Flanges & Pipe of Spool Piece.All Improper Installations Will Be Replaced
page: https://kanterella.com/05000281/LER-2D1975-2D016-2D01-2C_/01T-3Aon_750823-2Clow_Level_Alarm_on_Boric_Acid_Tank_C_Received.Caused_by_Installation_of_Carbon_Steel_Rather_than_Stainless_Steel_304_Flanges…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1975-016-01, /01T:on 750823,low Level Alarm on Boric Acid Tank C Received.Caused by Installation of Carbon Steel Rather than Stainless Steel 304 Flanges & Pipe of Spool Piece.All Improper Installations Will Be Replaced

05000281/LER-1975-021-01, /01T:on 751219,channel 3 for Over Temp Indicated 132% While Channels 1 & 2 Indicated 118%.Cause Unknown. Channel Calibr & Returned to Svc
type: Subject
page: https://kanterella.com/05000281/LER-2D1975-2D021-2D01-2C_/01T-3Aon_751219-2Cchannel_3_for_Over_Temp_Indicated_132-_While_Channels_1_-26_2_Indicated_118-.Cause_Unknown._Channel_Calibr_-26_Returned_to_S…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1975-021-01, /01T:on 751219,channel 3 for Over Temp Indicated 132% While Channels 1 & 2 Indicated 118%.Cause Unknown. Channel Calibr & Returned to Svc

01T:on 751205,uncontrolled & Unplanned Release of Low Level Radioactive Matl Occurred.Caused by Primary Grade Water Tank 1-PG-TK-1A Overflow Due to Operator Error. Administrative Action Taken
type: Subject
label: 05000280/LER-1975-027-01, /01T:on 751205,uncontrolled & Unplanned Release of Low Level Radioactive Matl Occurred.Caused by Primary Grade Water Tank 1-PG-TK-1A Overflow Due to Operator Error. Administrative Action Taken
page: https://kanterella.com/05000280/LER-2D1975-2D027-2D01-2C_/01T-3Aon_751205-2Cuncontrolled_-26_Unplanned_Release_of_Low_Level_Radioactive_Matl_Occurred.Caused_by_Primary_Grade_Water_Tank_1-2DPG-2DTK-2D1…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1975-027-01, /01T:on 751205,uncontrolled & Unplanned Release of Low Level Radioactive Matl Occurred.Caused by Primary Grade Water Tank 1-PG-TK-1A Overflow Due to Operator Error. Administrative Action Taken

05000281/LER-1976-010-03, /03L:on 760621,loss of Voltage Alarm Received on Power Range Nuclear Instrument Channel 42.Caused by Failure of 25-volt Power Supply.Power Supply Replaced & Channel Calibr
type: Subject
page: https://kanterella.com/05000281/LER-2D1976-2D010-2D03-2C_/03L-3Aon_760621-2Closs_of_Voltage_Alarm_Received_on_Power_Range_Nuclear_Instrument_Channel_42.Caused_by_Failure_of_25-2Dvolt_Power_Supply.Powe…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000281/LER-1976-010-03, /03L:on 760621,loss of Voltage Alarm Received on Power Range Nuclear Instrument Channel 42.Caused by Failure of 25-volt Power Supply.Power Supply Replaced & Channel Calibr

05000280/LER-1975-015-01, /01T:on 750803,leaking Fitting on Overhead Gas Compressor B Resulted in Unplanned Release of Radioactive Matl from Site.Caused by Loose Fitting.Leaking Fitting Repaired
type: Subject
page: https://kanterella.com/05000280/LER-2D1975-2D015-2D01-2C_/01T-3Aon_750803-2Cleaking_Fitting_on_Overhead_Gas_Compressor_B_Resulted_in_Unplanned_Release_of_Radioactive_Matl_from_Site.Caused_by_Loose_Fit…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000280/LER-1975-015-01, /01T:on 750803,leaking Fitting on Overhead Gas Compressor B Resulted in Unplanned Release of Radioactive Matl from Site.Caused by Loose Fitting.Leaking Fitting Repaired

LER-1977-012, :on 770620,during Investigation of Cycle 5 Max Critical Power Ratio Limits,Ge Found That Pump Trip Delay Time Assumed in Original Cycle 5 Transient Analysis Not Appropriate.Amend Request Will Be Submitted
type: Subject
label: 05000000/LER-1977-012, :on 770620,during Investigation of Cycle 5 Max Critical Power Ratio Limits,Ge Found That Pump Trip Delay Time Assumed in Original Cycle 5 Transient Analysis Not Appropriate.Amend Request Will Be Submitted
page: https://kanterella.com/05000000/LER-2D1977-2D012-2C_-3Aon_770620-2Cduring_Investigation_of_Cycle_5_Max_Critical_Power_Ratio_Limits-2CGe_Found_That_Pump_Trip_Delay_Time_Assumed_in_Original_Cycle_5_Tran…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000000/LER-1977-012, :on 770620,during Investigation of Cycle 5 Max Critical Power Ratio Limits,Ge Found That Pump Trip Delay Time Assumed in Original Cycle 5 Transient Analysis Not Appropriate.Amend Request Will Be Submitted

LER-1976-014, :on 760811,during Startup,Primary Containment Dioxide Concentration Not Reduced to Less than 5- within 24 H After Going Into Run Mode.Caused by Failed Metal Bellows Co Model MN-115 Pump Bellows
type: Subject
label: 05000263/LER-1976-014, :on 760811,during Startup,Primary Containment Dioxide Concentration Not Reduced to Less than 5% within 24 H After Going Into Run Mode.Caused by Failed Metal Bellows Co Model MN-115 Pump Bellows
page: https://kanterella.com/05000263/LER-2D1976-2D014-2C_-3Aon_760811-2Cduring_Startup-2CPrimary_Containment_Dioxide_Concentration_Not_Reduced_to_Less_than_5-_within_24_H_After_Going_Into_Run_Mode.Caused_b…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1976-014, :on 760811,during Startup,Primary Containment Dioxide Concentration Not Reduced to Less than 5% within 24 H After Going Into Run Mode.Caused by Failed Metal Bellows Co Model MN-115 Pump Bellows

LER-1976-016, :on 760828,during Insp of Condenser area,1-inch Elbow Found Leaking on HP Turbine Inlet Steam Line U-bend Drain Line.Erosion of Wall Caused by Hot Steam Flashing After Passing Through Orifice
type: Subject
label: 05000263/LER-1976-016, :on 760828,during Insp of Condenser area,1-inch Elbow Found Leaking on HP Turbine Inlet Steam Line U-bend Drain Line.Erosion of Wall Caused by Hot Steam Flashing After Passing Through Orifice
page: https://kanterella.com/05000263/LER-2D1976-2D016-2C_-3Aon_760828-2Cduring_Insp_of_Condenser_area-2C1-2Dinch_Elbow_Found_Leaking_on_HP_Turbine_Inlet_Steam_Line_U-2Dbend_Drain_Line.Erosion_of_Wall_Cause…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000263/LER-1976-016, :on 760828,during Insp of Condenser area,1-inch Elbow Found Leaking on HP Turbine Inlet Steam Line U-bend Drain Line.Erosion of Wall Caused by Hot Steam Flashing After Passing Through Orifice

05000261/LER-1976-015, :on 760817,auxiliary Feedwater Pump Discharge Valve V2-16A Failed to Open as Required.Caused by Valve Binded to Seat.Larger Capacity to Be Installed
type: Subject
page: https://kanterella.com/05000261/LER-2D1976-2D015-2C_-3Aon_760817-2Cauxiliary_Feedwater_Pump_Discharge_Valve_V2-2D16A_Failed_to_Open_as_Required.Caused_by_Valve_Binded_to_Seat.Larger_Capacity_to_Be_Ins…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000261/LER-1976-015, :on 760817,auxiliary Feedwater Pump Discharge Valve V2-16A Failed to Open as Required.Caused by Valve Binded to Seat.Larger Capacity to Be Installed

LER-1975-018, :on 750901,steam Supply Isolation Valve 13-15 Would Not Fully Close.Caused by Tightening Valve Package During Maint Which Caused Packing to Swell.Bolting Replaced & Motor Operator Reinstalled
type: Subject
label: 05000271/LER-1975-018, :on 750901,steam Supply Isolation Valve 13-15 Would Not Fully Close.Caused by Tightening Valve Package During Maint Which Caused Packing to Swell.Bolting Replaced & Motor Operator Reinstalled
page: https://kanterella.com/05000271/LER-2D1975-2D018-2C_-3Aon_750901-2Csteam_Supply_Isolation_Valve_13-2D15_Would_Not_Fully_Close.Caused_by_Tightening_Valve_Package_During_Maint_Which_Caused_Packing_to_Sw…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1975-018, :on 750901,steam Supply Isolation Valve 13-15 Would Not Fully Close.Caused by Tightening Valve Package During Maint Which Caused Packing to Swell.Bolting Replaced & Motor Operator Reinstalled

LER-1975-022, :on 751109,during Cold Shutdown,Valve 10-25B Control Room Position Indication Lights Indicated Valve Cycling from Full Open to Full Closed Position.Cause Unknown.No Corrective Actions Taken
type: Subject
label: 05000271/LER-1975-022, :on 751109,during Cold Shutdown,Valve 10-25B Control Room Position Indication Lights Indicated Valve Cycling from Full Open to Full Closed Position.Cause Unknown.No Corrective Actions Taken
page: https://kanterella.com/05000271/LER-2D1975-2D022-2C_-3Aon_751109-2Cduring_Cold_Shutdown-2CValve_10-2D25B_Control_Room_Position_Indication_Lights_Indicated_Valve_Cycling_from_Full_Open_to_Full_Closed_P…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1975-022, :on 751109,during Cold Shutdown,Valve 10-25B Control Room Position Indication Lights Indicated Valve Cycling from Full Open to Full Closed Position.Cause Unknown.No Corrective Actions Taken

05000261/LER-1976-020, :on 761117,small Pinhole Leaks Found on Three Canopy Seal Welds.Caused by Weld Degradation.Affected Surface Cleaned,Repair Welded & Nondestructively Examined
type: Subject
page: https://kanterella.com/05000261/LER-2D1976-2D020-2C_-3Aon_761117-2Csmall_Pinhole_Leaks_Found_on_Three_Canopy_Seal_Welds.Caused_by_Weld_Degradation.Affected_Surface_Cleaned-2CRepair_Welded_-26_Nondestr…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000261/LER-1976-020, :on 761117,small Pinhole Leaks Found on Three Canopy Seal Welds.Caused by Weld Degradation.Affected Surface Cleaned,Repair Welded & Nondestructively Examined

Valve Body Shrinkage.Valve Reset
type: Subject
label: 05000271/LER-1976-008-03, /03L:on 760415,LPCI Sys a Declared Inoperable & Alternate Testing Commenced.Caused by Inability to Guarantee Valve RHR-25A Operability Due to Past Problems W/Valve Body Shrinkage.Valve Reset
page: https://kanterella.com/05000271/LER-2D1976-2D008-2D03-2C_/03L-3Aon_760415-2CLPCI_Sys_a_Declared_Inoperable_-26_Alternate_Testing_Commenced.Caused_by_Inability_to_Guarantee_Valve_RHR-2D25A_Operability_…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1976-008-03, /03L:on 760415,LPCI Sys a Declared Inoperable & Alternate Testing Commenced.Caused by Inability to Guarantee Valve RHR-25A Operability Due to Past Problems W/Valve Body Shrinkage.Valve Reset

03L:on 760519,level Switch 23-91A Would Not Actuate at Tech Spec Trip Level Setting of 2 Inches.Caused by Accumulation of Scale & Corrosion Inside Switch Chamber. Float Tapped & Repeatedly Flushed
type: Subject
label: 05000271/LER-1976-014-03, /03L:on 760519,level Switch 23-91A Would Not Actuate at Tech Spec Trip Level Setting of 2 Inches.Caused by Accumulation of Scale & Corrosion Inside Switch Chamber. Float Tapped & Repeatedly Flushed
page: https://kanterella.com/05000271/LER-2D1976-2D014-2D03-2C_/03L-3Aon_760519-2Clevel_Switch_23-2D91A_Would_Not_Actuate_at_Tech_Spec_Trip_Level_Setting_of_2_Inches.Caused_by_Accumulation_of_Scale_-26_Corr…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1976-014-03, /03L:on 760519,level Switch 23-91A Would Not Actuate at Tech Spec Trip Level Setting of 2 Inches.Caused by Accumulation of Scale & Corrosion Inside Switch Chamber. Float Tapped & Repeatedly Flushed

03L:on 760614,level Switch 23-91A Would Not Actuate at Tech Spec Trip Level Setting.Caused by Stuck Float Inside Level Switch Chamber.Switch Chamber Flushed, Causing Float to Become Freed & Operable
type: Subject
label: 05000271/LER-1976-016-03, /03L:on 760614,level Switch 23-91A Would Not Actuate at Tech Spec Trip Level Setting.Caused by Stuck Float Inside Level Switch Chamber.Switch Chamber Flushed, Causing Float to Become Freed & Operable
page: https://kanterella.com/05000271/LER-2D1976-2D016-2D03-2C_/03L-3Aon_760614-2Clevel_Switch_23-2D91A_Would_Not_Actuate_at_Tech_Spec_Trip_Level_Setting.Caused_by_Stuck_Float_Inside_Level_Switch_Chamber.Sw…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1976-016-03, /03L:on 760614,level Switch 23-91A Would Not Actuate at Tech Spec Trip Level Setting.Caused by Stuck Float Inside Level Switch Chamber.Switch Chamber Flushed, Causing Float to Become Freed & Operable

One Control Rod Withdrawal Permit Circuit Found Inoperable. Caused by Position Indicating Switch on Rod 22-43 at full-in Position Stuck in Closed Position
type: Subject
label: 05000271/LER-1976-018-01, /01T:on 760629,control Rod Block Associated W/One Control Rod Withdrawal Permit Circuit Found Inoperable. Caused by Position Indicating Switch on Rod 22-43 at full-in Position Stuck in Closed Position
page: https://kanterella.com/05000271/LER-2D1976-2D018-2D01-2C_/01T-3Aon_760629-2Ccontrol_Rod_Block_Associated_W/One_Control_Rod_Withdrawal_Permit_Circuit_Found_Inoperable._Caused_by_Position_Indicating_Swi…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000271/LER-1976-018-01, /01T:on 760629,control Rod Block Associated W/One Control Rod Withdrawal Permit Circuit Found Inoperable. Caused by Position Indicating Switch on Rod 22-43 at full-in Position Stuck in Closed Position

LER-1976-003-01, :on 761220,during Weekly Surveillance Test, Clicking Sound at Engine & Intermittent Emergency Fire Water Pump 1B Run Alarm Detected.Caused by Failure of Drive Cable Due to Normal Wear.Cable Replaced
type: Subject
label: 05000267/LER-1976-003-01, :on 761220,during Weekly Surveillance Test, Clicking Sound at Engine & Intermittent Emergency Fire Water Pump 1B Run Alarm Detected.Caused by Failure of Drive Cable Due to Normal Wear.Cable Replaced
page: https://kanterella.com/05000267/LER-2D1976-2D003-2D01-2C_-3Aon_761220-2Cduring_Weekly_Surveillance_Test-2C_Clicking_Sound_at_Engine_-26_Intermittent_Emergency_Fire_Water_Pump_1B_Run_Alarm_Detected.Cau…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000267/LER-1976-003-01, :on 761220,during Weekly Surveillance Test, Clicking Sound at Engine & Intermittent Emergency Fire Water Pump 1B Run Alarm Detected.Caused by Failure of Drive Cable Due to Normal Wear.Cable Replaced

05000244/LER-1976-014-03, /03L-0:on 760412,N44 Power Range Detector High Voltage Power Supply Failed.Cause Under Investigation
type: Subject
page: https://kanterella.com/05000244/LER-2D1976-2D014-2D03-2C_/03L-2D0-3Aon_760412-2CN44_Power_Range_Detector_High_Voltage_Power_Supply_Failed.Cause_Under_Investigation
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000244/LER-1976-014-03, /03L-0:on 760412,N44 Power Range Detector High Voltage Power Supply Failed.Cause Under Investigation

03L-0:on 830526,during Normal Operation,Hpci Sys Declared Inoperable Due to Blown Inverter Fuse.Fuse Replaced.Hpci Turbine Control Valve Failed to Open Due to Misadjusted Rod.Rod Adjusted
type: Subject
label: 05000260/LER-1983-028-03, /03L-0:on 830526,during Normal Operation,Hpci Sys Declared Inoperable Due to Blown Inverter Fuse.Fuse Replaced.Hpci Turbine Control Valve Failed to Open Due to Misadjusted Rod.Rod Adjusted
page: https://kanterella.com/05000260/LER-2D1983-2D028-2D03-2C_/03L-2D0-3Aon_830526-2Cduring_Normal_Operation-2CHpci_Sys_Declared_Inoperable_Due_to_Blown_Inverter_Fuse.Fuse_Replaced.Hpci_Turbine_Control_Val…
wiki namespace: 0
wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000260/LER-1983-028-03, /03L-0:on 830526,during Normal Operation,Hpci Sys Declared Inoperable Due to Blown Inverter Fuse.Fuse Replaced.Hpci Turbine Control Valve Failed to Open Due to Misadjusted Rod.Rod Adjusted

reactor Bldg Purge Initiated, Radiation Monitor RM-A4 Read Higher than Normal Pump RM-A4 & Detector Secured to Change Filter,Leaving Purge Unmonitored for 5 Minutes.No Activity Released During Event
type: Subject
label: 05000395/LER-1983-029-03, /03L-0:on 830320,w/reactor Bldg Purge Initiated, Radiation Monitor RM-A4 Read Higher than Normal Pump RM-A4 & Detector Secured to Change Filter,Leaving Purge Unmonitored for 5 Minutes.No Activity Released During Event
page: https://kanterella.com/05000395/LER-2D1983-2D029-2D03-2C_/03L-2D0-3Aon_830320-2Cw/reactor_Bldg_Purge_Initiated-2C_Radiation_Monitor_RM-2DA4_Read_Higher_than_Normal_Pump_RM-2DA4_-26_Detector_Secured_to…
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wiki page content language: en
SSC: 0l-l0
wiki page sort key: 05000395/LER-1983-029-03, /03L-0:on 830320,w/reactor Bldg Purge Initiated, Radiation Monitor RM-A4 Read Higher than Normal Pump RM-A4 & Detector Secured to Change Filter,Leaving Purge Unmonitored for 5 Minutes.No Activity Released During Event

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