| | | Reporting criterion |
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| 05000344/LER-1981-001, Forwards LER 81-001/03L-0 | Forwards LER 81-001/03L-0 | |
| 05000344/LER-1981-001-03, /03L-0:on 801212,blown Fuse Was Found in Breaker Control Power Circuit for Vent Supply Fan to turbine-driven Auxiliary Feedwater Pump Room.Cause Unknown.Fuse Replaced | /03L-0:on 801212,blown Fuse Was Found in Breaker Control Power Circuit for Vent Supply Fan to turbine-driven Auxiliary Feedwater Pump Room.Cause Unknown.Fuse Replaced | |
| 05000344/LER-1981-002-03, /03L-0:on 810107,after Normal Sampling of RCS, Common Sample Containment Isolation Valve Failed to Close from Control Room.Caused by Inadequate Lubrication of Valve Stem.Valve Stem Cleaned & Lubricated | /03L-0:on 810107,after Normal Sampling of RCS, Common Sample Containment Isolation Valve Failed to Close from Control Room.Caused by Inadequate Lubrication of Valve Stem.Valve Stem Cleaned & Lubricated | |
| 05000344/LER-1981-002, Forwards LER 81-002/03L-0 | Forwards LER 81-002/03L-0 | |
| 05000344/LER-1981-003, Forwards LER 81-003/03L-0 | Forwards LER 81-003/03L-0 | |
| 05000344/LER-1981-003-03, /03L-0:on 810130,min Required Number of Source Range Channels Not Met When Both Channels of Nuclear Source Range Indications Failed to Energize Automatically.Caused by Improper Actuation of Instrument Crowbar Circuit | /03L-0:on 810130,min Required Number of Source Range Channels Not Met When Both Channels of Nuclear Source Range Indications Failed to Energize Automatically.Caused by Improper Actuation of Instrument Crowbar Circuit | |
| 05000344/LER-1981-004-03, /03L-0:on 810122,fan Cooling Unit for Pump Did Not Automatically Start During Periodic Operating Test of Containment Spray Pump B.Caused by Thermal Overload Trip on Fan Unit Supply Breaker B-2415.Overloads Reset | /03L-0:on 810122,fan Cooling Unit for Pump Did Not Automatically Start During Periodic Operating Test of Containment Spray Pump B.Caused by Thermal Overload Trip on Fan Unit Supply Breaker B-2415.Overloads Reset | |
| 05000344/LER-1981-004, Forwards LER 81-004/03L-0 | Forwards LER 81-004/03L-0 | |
| 05000344/LER-1981-005-03, /03L-0:on 810305,valves MO-2052A & MO-2069A Forming Containment Boundary Between Containment Spray Sys & Recirculation Sump in Auxiliary Bldg Found Incorrectly Positioned.Caused by Personnel Error | /03L-0:on 810305,valves MO-2052A & MO-2069A Forming Containment Boundary Between Containment Spray Sys & Recirculation Sump in Auxiliary Bldg Found Incorrectly Positioned.Caused by Personnel Error | |
| 05000344/LER-1981-005, Forwards LER 81-005/03L-0.Detailed Event Analysis Encl | Forwards LER 81-005/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-006, Forwards LER 81-006/03L-0.Detailed Event Analysis Encl | Forwards LER 81-006/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-006-03, /03L-0:on 810316,erratic Trip Setpoint Found on Engineered Safeguards Feature Steamline Pressure Channel 516.Caused by Failed Capacitator.Capacitator Replaced & Channel Calibr | /03L-0:on 810316,erratic Trip Setpoint Found on Engineered Safeguards Feature Steamline Pressure Channel 516.Caused by Failed Capacitator.Capacitator Replaced & Channel Calibr | |
| 05000344/LER-1981-007, Has Been Cancelled | Has Been Cancelled | |
| 05000344/LER-1981-008, Forwards LER 81-008/03L-0.Detailed Event Analysis Encl | Forwards LER 81-008/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-008-03, /03L-0:on 810419,valve MO-4005 Failed in Open Position After Actuation.Cause Attributed to Component Failure.Valve Operator Submerged in Water Resulting in Damage.Operator Repaired.Motor Replaced | /03L-0:on 810419,valve MO-4005 Failed in Open Position After Actuation.Cause Attributed to Component Failure.Valve Operator Submerged in Water Resulting in Damage.Operator Repaired.Motor Replaced | |
| 05000344/LER-1981-009-03, /03L-0:on 810420,motor Control Ctr Power Lost When Worker Shorted Bus to Ground Causing Feed Breaker to Open.Caused by Personnel Error.Meter Set to Wrong Function.Damaged Breaker Repaired & Returned to Svc | /03L-0:on 810420,motor Control Ctr Power Lost When Worker Shorted Bus to Ground Causing Feed Breaker to Open.Caused by Personnel Error.Meter Set to Wrong Function.Damaged Breaker Repaired & Returned to Svc | |
| 05000344/LER-1981-009, Forwards LER 81-009/03L-0.Detailed Event Analysis Encl | Forwards LER 81-009/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-010, Forwards LER 81-010/03L.Detailed Event Analysis Encl | Forwards LER 81-010/03L.Detailed Event Analysis Encl | |
| 05000344/LER-1981-010-03, /03L-0:on 810502,outer Door of Airlock at 93 Ft Elevation of Containment Was Left Open.Caused by Personnel Error.Personnel Retrained | /03L-0:on 810502,outer Door of Airlock at 93 Ft Elevation of Containment Was Left Open.Caused by Personnel Error.Personnel Retrained | |
| 05000344/LER-1981-011-03, /03L-0:on 810629,local Leak Rate Testing Results Showed That Cumulative Leakage Through Type C Containment Valves Exceeded Sts.Causes & Corrective Actions Stated in Table 1.Valves Repaired & Retested Prior to Plant Heatup | /03L-0:on 810629,local Leak Rate Testing Results Showed That Cumulative Leakage Through Type C Containment Valves Exceeded Sts.Causes & Corrective Actions Stated in Table 1.Valves Repaired & Retested Prior to Plant Heatup | |
| 05000344/LER-1981-011, Forwards LER 81-011/03L-0.Detailed Event Analysis Encl | Forwards LER 81-011/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-012-03, /03L-0:on 810626,during RCS Level Reduction, Operating RHR Pump Began Cavitating & Was Stopped to Prevent Pump Damage.Caused by Inadequate Venting of Pressurizer. Procedures Will Be Reviewed W/Personnel | /03L-0:on 810626,during RCS Level Reduction, Operating RHR Pump Began Cavitating & Was Stopped to Prevent Pump Damage.Caused by Inadequate Venting of Pressurizer. Procedures Will Be Reviewed W/Personnel | |
| 05000344/LER-1981-012, Forwards LER 81-012/03L-0.Detailed Event Analysis Encl | Forwards LER 81-012/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-013-03, /03L-0:on 810703,during RCS Integrity Test,Rcs Leakage Exceeded Tech Spec Limit.Caused by Leaking Drain Valves on Reactor Coolant Loops Due to Failure to Torque Valves | /03L-0:on 810703,during RCS Integrity Test,Rcs Leakage Exceeded Tech Spec Limit.Caused by Leaking Drain Valves on Reactor Coolant Loops Due to Failure to Torque Valves | |
| 05000344/LER-1981-013, Forwards LER 81-013/03L-0.Detailed Event Analysis Encl | Forwards LER 81-013/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-014-03, /03L-0:on 810728,during Routine Operator Surveillance at 80% Power,Main Containment Isolation Valve for Demineralized Water Washdown Found in Open Position. Caused by Personnel Negligence.Valve Closed & Locked | /03L-0:on 810728,during Routine Operator Surveillance at 80% Power,Main Containment Isolation Valve for Demineralized Water Washdown Found in Open Position. Caused by Personnel Negligence.Valve Closed & Locked | |
| 05000344/LER-1981-014, Forwards LER 81-014/03L-0.Detailed Event Analysis Encl | Forwards LER 81-014/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-015-03, /03L-0:on 810728,during Routine Operation,Steam Generator Blowdown Containment Isolation Valve MO-2813 Failed in Open Position.Cause Attributed to Valve Operator Motor Failure.Motor Replaced | /03L-0:on 810728,during Routine Operation,Steam Generator Blowdown Containment Isolation Valve MO-2813 Failed in Open Position.Cause Attributed to Valve Operator Motor Failure.Motor Replaced | |
| 05000344/LER-1981-015, Forwards LER 81-015/03L-0.Detailed Event Analysis Encl | Forwards LER 81-015/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-016-03, /03L-0:on 810728,during Operator Insp W/Reactor at 80% Power,Train B Hydrogen Recombiner Was Inoperable.Caused by Inadvertent Activation of Fire Protection Deluge Sys. Control Power Transformer Replaced | /03L-0:on 810728,during Operator Insp W/Reactor at 80% Power,Train B Hydrogen Recombiner Was Inoperable.Caused by Inadvertent Activation of Fire Protection Deluge Sys. Control Power Transformer Replaced | |
| 05000344/LER-1981-016, Forwards LER 81-016/03L-0.Detailed Event Analysis Encl | Forwards LER 81-016/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-017, Forwards LER 81-017/03L-0.Detailed Event Analysis Encl | Forwards LER 81-017/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-017-03, /03L-0:on 810731,after Increasing Level in C SI Accumulator by 11%,boron Concentration Not Verified within 6-h,per Tech Spec.Caused by Personnel Error.Sample Taken Upon Discovery.Importance of Sample Stressed to Personnel | /03L-0:on 810731,after Increasing Level in C SI Accumulator by 11%,boron Concentration Not Verified within 6-h,per Tech Spec.Caused by Personnel Error.Sample Taken Upon Discovery.Importance of Sample Stressed to Personnel | |
| 05000344/LER-1981-018-03, /03L-0:on 810805,turbine First Stage Pressure Channel 506 Found Exceeding Limiting Setting.Caused by Instrument Drift.Instrument Recalibr | /03L-0:on 810805,turbine First Stage Pressure Channel 506 Found Exceeding Limiting Setting.Caused by Instrument Drift.Instrument Recalibr | |
| 05000344/LER-1981-018, Forwards LER 81-018/03L-0.Detailed Event Analysis Encl | Forwards LER 81-018/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-019, Forwards LER 81-019/03L-0.Detailed Event Analysis Encl | Forwards LER 81-019/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-019-03, /03L-0:on 810902,control Room Emergency Ventilation Humidistat Preheat Coil Would Not Energize to Maintain Control Room Humidity.Caused by Failure of Diaphragm in Humidistat Pneumatic Drive Mechanism | /03L-0:on 810902,control Room Emergency Ventilation Humidistat Preheat Coil Would Not Energize to Maintain Control Room Humidity.Caused by Failure of Diaphragm in Humidistat Pneumatic Drive Mechanism | |
| 05000344/LER-1981-020-03, /03L-0:on 810906,during Routine Shift Tour,Train B Control Room Chlorine Detector Inoperative.Caused by Binding Due to Dirty Pump Motor Bearing.Bearing Lubricated, Metering Tube Cleaned & Detector Calibr | /03L-0:on 810906,during Routine Shift Tour,Train B Control Room Chlorine Detector Inoperative.Caused by Binding Due to Dirty Pump Motor Bearing.Bearing Lubricated, Metering Tube Cleaned & Detector Calibr | |
| 05000344/LER-1981-020, Forwards LER 81-020/03L-0.Detailed Event Analysis Encl | Forwards LER 81-020/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-021, Forwards LER 81-021/03L-0.Detailed Event Analysis Encl | Forwards LER 81-021/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-021-03, /03L-0:on 810910,inadequate Ventilation Found for Train a Preferred Instrument & Control Power Buses.Caused by Insufficient ESF Ventilation Due to Fire Barriers Between a & B Trains.Room Ventilation Will Be Upgraded | /03L-0:on 810910,inadequate Ventilation Found for Train a Preferred Instrument & Control Power Buses.Caused by Insufficient ESF Ventilation Due to Fire Barriers Between a & B Trains.Room Ventilation Will Be Upgraded | |
| 05000344/LER-1981-022-03, /03L-0:on 810917,train a Was Inoperable Due to Suction Path from Control Room Being Isolated by Closed Manual Inlet Damper on Ventilation Sys.Caused by Loose Set Screw Allowing Operator to Be Moved W/O Moving Damper | /03L-0:on 810917,train a Was Inoperable Due to Suction Path from Control Room Being Isolated by Closed Manual Inlet Damper on Ventilation Sys.Caused by Loose Set Screw Allowing Operator to Be Moved W/O Moving Damper | |
| 05000344/LER-1981-022, Forwards LER 81-022/03L-0.Detailed Event Analysis Encl | Forwards LER 81-022/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-023-03, /03L-0:on 810922,during Normal Operation, Containment Atmosphere Sample Return Valve Closed in 10.8-s. Cause Undetermined.Alara Guidelines Restrict Valve Access for Insp During Operation.Insp at Next Refueling Outage | /03L-0:on 810922,during Normal Operation, Containment Atmosphere Sample Return Valve Closed in 10.8-s. Cause Undetermined.Alara Guidelines Restrict Valve Access for Insp During Operation.Insp at Next Refueling Outage | |
| 05000344/LER-1981-023, Forwards LER 81-023/03L-0.Detailed Event Analysis Encl | Forwards LER 81-023/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-024, Forwards LER 81-024/03L-0.Detailed Event Analysis Encl | Forwards LER 81-024/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-024-03, /03L-0:on 811003,emergency Diesel Generator Declared Inoperable Due to Blown Fuse & Loss of Dc Power. Caused by Failure of Indicator Lamp Socket.Lamp Socket & Dc Fuse Replaced | /03L-0:on 811003,emergency Diesel Generator Declared Inoperable Due to Blown Fuse & Loss of Dc Power. Caused by Failure of Indicator Lamp Socket.Lamp Socket & Dc Fuse Replaced | |
| 05000344/LER-1981-025, Forwards LER 81-025/03L-0.Detailed Event Analysis Encl | Forwards LER 81-025/03L-0.Detailed Event Analysis Encl | |
| 05000344/LER-1981-025-03, /03L-0:on 811104,power to Preferred Instrument Bus Y11 Lost for 1 Minute Due to Failure of Output Current Sensing Relay on Associated Static Inverter.Caused by Normal Relay end-of-life.Relay Replaced | /03L-0:on 811104,power to Preferred Instrument Bus Y11 Lost for 1 Minute Due to Failure of Output Current Sensing Relay on Associated Static Inverter.Caused by Normal Relay end-of-life.Relay Replaced | |
| 05000344/LER-1981-026, Forwards LER 81-026/03L-0.Detailed Event Analysis Encl | Forwards LER 81-026/03L-0.Detailed Event Analysis Encl | |
