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| 05000335/LER-1980-001, Forwards LER 80-001/03L-0 | Forwards LER 80-001/03L-0 | |
| 05000335/LER-1980-001-03, /03L-0:on 800102,during Surveillance Testing of IA Diesel Generator,Fuel Transfer Pump Failed to Start. Failure Caused by Dirty Starter Contactor.Pump Cleaned & Returned to Svc | /03L-0:on 800102,during Surveillance Testing of IA Diesel Generator,Fuel Transfer Pump Failed to Start. Failure Caused by Dirty Starter Contactor.Pump Cleaned & Returned to Svc | |
| 05000335/LER-1980-002-03, /03L-0:on 800104,during Normal Operations,Control Element Assembly Dropped to Full Insertion,Causing Tq to Exceed Core Limits.Caused by Failure of 15-volt Power Supply in Coil Power Programmer.Power Supply Replaced | /03L-0:on 800104,during Normal Operations,Control Element Assembly Dropped to Full Insertion,Causing Tq to Exceed Core Limits.Caused by Failure of 15-volt Power Supply in Coil Power Programmer.Power Supply Replaced | |
| 05000335/LER-1980-002, Forwards LER 80-002/03L-0 | Forwards LER 80-002/03L-0 | |
| 05000335/LER-1980-003, Forwards LER 80-003/01T-0 | Forwards LER 80-003/01T-0 | |
| 05000335/LER-1980-003-03, During Normal Operations, Control Element Assembly 30 Reed Switch Position Indication Channel Failed.Cause Is Unknown.Channel Repaired & Returned to Svc | During Normal Operations, Control Element Assembly 30 Reed Switch Position Indication Channel Failed.Cause Is Unknown.Channel Repaired & Returned to Svc | |
| 05000335/LER-1980-004-01, /01T-0:on 800124,operating at 100% Power,Feeder Breaker from Startup Transformer 1B to 4160-volt Essential Bus B Found Open.Caused by Improper Label on Switch.Label Changed & Personnel Informed of Event | /01T-0:on 800124,operating at 100% Power,Feeder Breaker from Startup Transformer 1B to 4160-volt Essential Bus B Found Open.Caused by Improper Label on Switch.Label Changed & Personnel Informed of Event | |
| 05000335/LER-1980-004, Forwards LER 80-004/01T-0 | Forwards LER 80-004/01T-0 | |
| 05000335/LER-1980-005-03, /03L-0:on 800130 & Again on 800131,while Operating at 100% Power,Control Element Assembly Dropped to Bottom of Core.Caused by Loose Lead in 15-volt Power Supply.Control Element Assembly Returned to Normal Position | /03L-0:on 800130 & Again on 800131,while Operating at 100% Power,Control Element Assembly Dropped to Bottom of Core.Caused by Loose Lead in 15-volt Power Supply.Control Element Assembly Returned to Normal Position | |
| 05000335/LER-1980-005, Forwards LER 80-005/03L-0 | Forwards LER 80-005/03L-0 | |
| 05000335/LER-1980-006-03, /03L-0:on 800202,during Periodic Exercise of Containment Isolation Valves,Normally Closed Valves V-5201 & V-5204 Could Not Be Shut.Caused by Crystalline Boric Acid Deposits Caked on Valves.Valves Freed & Exercised | /03L-0:on 800202,during Periodic Exercise of Containment Isolation Valves,Normally Closed Valves V-5201 & V-5204 Could Not Be Shut.Caused by Crystalline Boric Acid Deposits Caked on Valves.Valves Freed & Exercised | |
| 05000335/LER-1980-006, Forwards LER 80-006/03L-0 | Forwards LER 80-006/03L-0 | |
| 05000335/LER-1980-007, Forwards LER 80-007/03L-0 | Forwards LER 80-007/03L-0 | |
| 05000335/LER-1980-007-03, /03L-0:on 800204,during Periodic Control Element Assembly (CEA) Surveillance Testing,Cea 19 Dropped to Full Insertion While Being Withdrawn.Caused by Failed Timer Module in Coil Power Programmer.Timer Module Replaced | /03L-0:on 800204,during Periodic Control Element Assembly (CEA) Surveillance Testing,Cea 19 Dropped to Full Insertion While Being Withdrawn.Caused by Failed Timer Module in Coil Power Programmer.Timer Module Replaced | |
| 05000335/LER-1980-008, Forwards Revised LER 80-008/03L-1 | Forwards Revised LER 80-008/03L-1 | |
| 05000335/LER-1980-008-03, Sample Valves for Tanks 1A1,1A2,1B1 & 1B2 Had Been Mislabeled.Caused by Drawing Error.Working Diagrams Revised & Piping & Labeling Corrected | Sample Valves for Tanks 1A1,1A2,1B1 & 1B2 Had Been Mislabeled.Caused by Drawing Error.Working Diagrams Revised & Piping & Labeling Corrected | |
| 05000335/LER-1980-009, Forwards LER 80-009/03L-0 | Forwards LER 80-009/03L-0 | |
| 05000335/LER-1980-009-03, /03L-0:on 800208,during Normal Operation,Rcs Leakage Was Determined to Be 4.38 Gpm Unidentified Leakage. Caused by Relief Valve Rv 2115 on Vol Control Tank Oscillating Open & Closed W/Charging Pump Pulsations | /03L-0:on 800208,during Normal Operation,Rcs Leakage Was Determined to Be 4.38 Gpm Unidentified Leakage. Caused by Relief Valve Rv 2115 on Vol Control Tank Oscillating Open & Closed W/Charging Pump Pulsations | |
| 05000335/LER-1980-010-03, /03L-0:on 800217,during 100% Power Operation, Control Element Assembly 65 Dropped to Full Insertion When Selected to Manual Insertion for A.S.I. Damping.Cause Undetermined.Assembly Operated Properly in Normal Position | /03L-0:on 800217,during 100% Power Operation, Control Element Assembly 65 Dropped to Full Insertion When Selected to Manual Insertion for A.S.I. Damping.Cause Undetermined.Assembly Operated Properly in Normal Position | |
| 05000335/LER-1980-010, Forwards LER 80-010/03L-0 | Forwards LER 80-010/03L-0 | |
| 05000335/LER-1980-011, Forwards LER 80-011/03L-0 | Forwards LER 80-011/03L-0 | |
| 05000335/LER-1980-011-03, /03L-0:on 800219,during Normal Operation,Refueling Water Tank Engineered Safety Feature Actuation Sys Channel D Drifted Below Low Level Setpoint.Caused by Erroneous Level Signal in Level Transmitter | /03L-0:on 800219,during Normal Operation,Refueling Water Tank Engineered Safety Feature Actuation Sys Channel D Drifted Below Low Level Setpoint.Caused by Erroneous Level Signal in Level Transmitter | |
| 05000335/LER-1980-012, Forwards Updated LER 80-012/03X-1 | Forwards Updated LER 80-012/03X-1 | |
| 05000335/LER-1980-012-03, Diesel Generator B Failed to Reach Rated Speed During Operational Check.Caused by Sticking Injector Linkages.All Critical Linkage Bearings Received Adequate Lubrication | Diesel Generator B Failed to Reach Rated Speed During Operational Check.Caused by Sticking Injector Linkages.All Critical Linkage Bearings Received Adequate Lubrication | |
| 05000335/LER-1980-013-09, /09T-0:on 800317,during Trouble Shooting Re Inability of a Diesel Generator to Accept Full Design Load, Hot Excitor Leads to Generator Field Found W/Burnt Insulation.Caused by Error in Ae Installation Drawings | /09T-0:on 800317,during Trouble Shooting Re Inability of a Diesel Generator to Accept Full Design Load, Hot Excitor Leads to Generator Field Found W/Burnt Insulation.Caused by Error in Ae Installation Drawings | |
| 05000335/LER-1980-013, Forwards LER 80-013/09T-0 | Forwards LER 80-013/09T-0 | |
| 05000335/LER-1980-014, Forwards LER 80-014/03L-0 | Forwards LER 80-014/03L-0 | |
| 05000335/LER-1980-014-03, /03L-0: on 800324,w/reactor Shutdown for refueling,6B2 Heater for Sbvs Discovered to Be Inoperable. Caused by Defective Thermocouple Amplifier (Fenwal Model 543) in 6B2 Heater Control Circuitry.Amplifier Replaced | /03L-0: on 800324,w/reactor Shutdown for refueling,6B2 Heater for Sbvs Discovered to Be Inoperable. Caused by Defective Thermocouple Amplifier (Fenwal Model 543) in 6B2 Heater Control Circuitry.Amplifier Replaced | |
| 05000335/LER-1980-015-03, During Shutdown,Diesel Generator Loading Timers Found Out of Tolerance & Containment & Reactor Cavity Cooling Fans Failed to Start. Caused by Normal Setpoint Drift.Fans Retested | During Shutdown,Diesel Generator Loading Timers Found Out of Tolerance & Containment & Reactor Cavity Cooling Fans Failed to Start. Caused by Normal Setpoint Drift.Fans Retested | |
| 05000335/LER-1980-015, Forwards Updated LER 80-015/03L-1 | Forwards Updated LER 80-015/03L-1 | |
| 05000335/LER-1980-016, Forwards LER 80-016/09T-0 | Forwards LER 80-016/09T-0 | |
| 05000335/LER-1980-016-09, /09T-0:on 800411,engineering Evaluation Determined That Application of Two Rosemount Model 1152 Pressure Transmitters Resulted in Reportable Situation.Caused by Design Problem.Transmitters to Be Replaced | /09T-0:on 800411,engineering Evaluation Determined That Application of Two Rosemount Model 1152 Pressure Transmitters Resulted in Reportable Situation.Caused by Design Problem.Transmitters to Be Replaced | |
| 05000335/LER-1980-017-09, /09T-0:on 800428,penetrant Test of 45 Degree socket-welded Elbow Fittings in Nonclass Sys Showed Cracks at Same Location in Three Fittings.Caused by Generic Mfg Problem | /09T-0:on 800428,penetrant Test of 45 Degree socket-welded Elbow Fittings in Nonclass Sys Showed Cracks at Same Location in Three Fittings.Caused by Generic Mfg Problem | |
| 05000335/LER-1980-017, Forwards LER 80-017/09T-0 | Forwards LER 80-017/09T-0 | |
| 05000335/LER-1980-018-03, /03L-0:on 800419,liquid Waste Discharge Monitor Found to Be Isolated After Routine Controlled Release from 1B Equipment Drain Tank.Caused by Personnel Error.Procedure Change Issued | /03L-0:on 800419,liquid Waste Discharge Monitor Found to Be Isolated After Routine Controlled Release from 1B Equipment Drain Tank.Caused by Personnel Error.Procedure Change Issued | |
| 05000335/LER-1980-018, Forwards LER 80-018/03L-0 | Forwards LER 80-018/03L-0 | |
| 05000335/LER-1980-019, Forwards LER 80-019/03L-0 | Forwards LER 80-019/03L-0 | |
| 05000335/LER-1980-019-03, /03L-0:on 800501,during Normal Refueling Operations,Leak Check of Personnel Air Lock Indicated Leakage in Excess of Tech Specs.Caused by Defective Air Lock Handwheel Shaft Packing Gland.Packing Glands Adjusted | /03L-0:on 800501,during Normal Refueling Operations,Leak Check of Personnel Air Lock Indicated Leakage in Excess of Tech Specs.Caused by Defective Air Lock Handwheel Shaft Packing Gland.Packing Glands Adjusted | |
| 05000335/LER-1980-020-03, /03L-0:on 800507,during Heatup Following Refueling,Auxiliary Feed Pump Governor Found Out of Adjustment.Caused by Drifting of Speed Setting Potentiometer.Potentiometer Readjusted | /03L-0:on 800507,during Heatup Following Refueling,Auxiliary Feed Pump Governor Found Out of Adjustment.Caused by Drifting of Speed Setting Potentiometer.Potentiometer Readjusted | |
| 05000335/LER-1980-020, Forwards LER 80-020/03L-0 | Forwards LER 80-020/03L-0 | |
| 05000335/LER-1980-021, Forwards LER 80-021/03L-0 | Forwards LER 80-021/03L-0 | |
| 05000335/LER-1980-021-03, /03L-0:on 800507,during Normal Surveillance & post-maint testing,1A Diesel Generator Failed to Synchronize to Emergency Bus.Caused by Frequency Permissive Relay Being Set Incorrectly.Relay Setpoint Corrected | /03L-0:on 800507,during Normal Surveillance & post-maint testing,1A Diesel Generator Failed to Synchronize to Emergency Bus.Caused by Frequency Permissive Relay Being Set Incorrectly.Relay Setpoint Corrected | |
| 05000335/LER-1980-022, Forwards LER 80-022/03L-0 | Forwards LER 80-022/03L-0 | |
| 05000335/LER-1980-022-03, /03L-0:on 800520,digital Data Processing Sys Malfunctioned During Power Operation.Caused by Computer Programing Error.Sys Repaired & Returned to Svc.Program Will Be Revised to Correct Software Problem | /03L-0:on 800520,digital Data Processing Sys Malfunctioned During Power Operation.Caused by Computer Programing Error.Sys Repaired & Returned to Svc.Program Will Be Revised to Correct Software Problem | |
| 05000335/LER-1980-023, Forwards LER 80-023/03L-0 | Forwards LER 80-023/03L-0 | |
| 05000335/LER-1980-023-03, /03L-0:on 800511,during Power Ascension,Control Element Assemblies 19 & 58 Dropped to Full Insertion.Caused by Failure of 15-volt Power Supply Units.Both Control Element Assemblies Were Restored | /03L-0:on 800511,during Power Ascension,Control Element Assemblies 19 & 58 Dropped to Full Insertion.Caused by Failure of 15-volt Power Supply Units.Both Control Element Assemblies Were Restored | |
| 05000335/LER-1980-024-03, /03L-0:on 800516,while Shut Down for Refueling, Periodic Test of Engineered Safety Features Showed 10 Diesel Generators Load Sequence Timers Were Out of Tolerance.Caused by Setpoint Drift.Maladjusted Relays Caused Other Prob | /03L-0:on 800516,while Shut Down for Refueling, Periodic Test of Engineered Safety Features Showed 10 Diesel Generators Load Sequence Timers Were Out of Tolerance.Caused by Setpoint Drift.Maladjusted Relays Caused Other Problems | |
| 05000335/LER-1980-024, Forwards LER 80-024/03L-0 | Forwards LER 80-024/03L-0 | |
| 05000335/LER-1980-025-01, /01T-0:on 800512,during Planned Secondary Shutdown for Turbine Maint,Steam Header Would Not Depressurize Following Steam Stop Closure Due to Sheared Bypass Valve Stems.Cause Undetermined.Valve Stems Replaced | /01T-0:on 800512,during Planned Secondary Shutdown for Turbine Maint,Steam Header Would Not Depressurize Following Steam Stop Closure Due to Sheared Bypass Valve Stems.Cause Undetermined.Valve Stems Replaced | |
| 05000335/LER-1980-025-09, /09X-1:on 800512,during Planned Secondary Plant Shutdown for Turbine Maint,Main Steam Header Would Not Depressurize Following Steam Stop Closure.Cause Unknown. Valve Stems Were Replaced & Verified Operable | /09X-1:on 800512,during Planned Secondary Plant Shutdown for Turbine Maint,Main Steam Header Would Not Depressurize Following Steam Stop Closure.Cause Unknown. Valve Stems Were Replaced & Verified Operable | |
