| | | Reporting criterion |
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| 05000271/LER-1981-001, Forwards LER 81-001/03L-0 | Forwards LER 81-001/03L-0 | |
| 05000271/LER-1981-001-03, /03L-0:on 810101,MSIV 80B & 86A Closing Times Exceeded Tech Spec.Caused by Improper Adjustment of Hydraulic Dash Pot Closure Time Adjustment Mechanism in B & Broken Spring in Mechanism A.Pot Adjusted & Spring Replaced | /03L-0:on 810101,MSIV 80B & 86A Closing Times Exceeded Tech Spec.Caused by Improper Adjustment of Hydraulic Dash Pot Closure Time Adjustment Mechanism in B & Broken Spring in Mechanism A.Pot Adjusted & Spring Replaced | |
| 05000271/LER-1981-001-01, /01P-0:on 810101,MSIVs 80B & 86A Closing Time Exceeded Tech Spec Limit of 5-s & Relay 5A-K3F Failed to de-energize.Cause Under Investigation | /01P-0:on 810101,MSIVs 80B & 86A Closing Time Exceeded Tech Spec Limit of 5-s & Relay 5A-K3F Failed to de-energize.Cause Under Investigation | |
| 05000271/LER-1981-002-03, /03L-0:on 810106,quarterly Stack Particulate Composite Could Not Be Completed Per Tech Specs.Caused by Stack Sample Filters for Oct Being Misplaced.Personnel Reinstructed Re Location & Storage of Filters | /03L-0:on 810106,quarterly Stack Particulate Composite Could Not Be Completed Per Tech Specs.Caused by Stack Sample Filters for Oct Being Misplaced.Personnel Reinstructed Re Location & Storage of Filters | |
| 05000271/LER-1981-002, Forwards LER 81-002/03L-0 | Forwards LER 81-002/03L-0 | |
| 05000271/LER-1981-003, Forwards LER 81-003/03L-0 | Forwards LER 81-003/03L-0 | |
| 05000271/LER-1981-003-03, /03L-0:on 810106,surveillance Frequency for Monthly Diesel Fuel Oil Quality Analysis Was Exceeded.Caused by Personnel Oversight.Analysis Performed W/Satisfactory Results | /03L-0:on 810106,surveillance Frequency for Monthly Diesel Fuel Oil Quality Analysis Was Exceeded.Caused by Personnel Oversight.Analysis Performed W/Satisfactory Results | |
| 05000271/LER-1981-004-03, /03L-0:on 810121,no TLD Readings Obtainable from Two Tlds Recovered from 1.7 Site Boundary TLD Station.Caused by Spurious,Unexplained Problem W/Eg&G Model TL-3 TLD Reader.Victoreen Model 2810 TLD Reader Ordered | /03L-0:on 810121,no TLD Readings Obtainable from Two Tlds Recovered from 1.7 Site Boundary TLD Station.Caused by Spurious,Unexplained Problem W/Eg&G Model TL-3 TLD Reader.Victoreen Model 2810 TLD Reader Ordered | |
| 05000271/LER-1981-004, Forwards LER 81-004/03L-0 | Forwards LER 81-004/03L-0 | |
| 05000271/LER-1981-005-03, /03L-0:on 810120,discovered That Continuous Air Sample Was Not Being Drawn at River Station Per Tech Spec 3.9.1.Caused by Pump Failure Due to Seized Bearing.New Pump Installed.Pump Evaluation Program Established | /03L-0:on 810120,discovered That Continuous Air Sample Was Not Being Drawn at River Station Per Tech Spec 3.9.1.Caused by Pump Failure Due to Seized Bearing.New Pump Installed.Pump Evaluation Program Established | |
| 05000271/LER-1981-005, Forwards LER 81-005/03L-0 | Forwards LER 81-005/03L-0 | |
| 05000271/LER-1981-006, Forwards LER 81-006/03L-0 | Forwards LER 81-006/03L-0 | |
| 05000271/LER-1981-006-03, /03L-0:on 810127,ATWS/recirculation Pump Trip High Pressure Trip Points from PT-2-3-56Bm,56Cm & 56Dm Tripped Above Tech Spec Level During Surveillance Testing Per Operation Procedure 4342.Caused by Instrument Drift | /03L-0:on 810127,ATWS/recirculation Pump Trip High Pressure Trip Points from PT-2-3-56Bm,56Cm & 56Dm Tripped Above Tech Spec Level During Surveillance Testing Per Operation Procedure 4342.Caused by Instrument Drift | |
| 05000271/LER-1981-007, Forwards LER 81-007/03L-0 | Forwards LER 81-007/03L-0 | |
| 05000271/LER-1981-007-03, /03L-0:on 810205,Torus-RB Vacuum Breaker Differential Pressure Indicating Switch 16-19-324,model 288, Actuated Above Tech Spec Limit.Caused by Setpoint Drift. Switch Exercised,Reset & Returned to Svc | /03L-0:on 810205,Torus-RB Vacuum Breaker Differential Pressure Indicating Switch 16-19-324,model 288, Actuated Above Tech Spec Limit.Caused by Setpoint Drift. Switch Exercised,Reset & Returned to Svc | |
| 05000271/LER-1981-008-03, /03L-0:on 810218,reactor Core Isolation Cooling Pump Tripped.Caused by Electrical Cable Connector Detaching from Egr.Connector Replaced | /03L-0:on 810218,reactor Core Isolation Cooling Pump Tripped.Caused by Electrical Cable Connector Detaching from Egr.Connector Replaced | |
| 05000271/LER-1981-008, Forwards LER 81-008/03L-0 | Forwards LER 81-008/03L-0 | |
| 05000271/LER-1981-009-03, /03L-0:on 810317,during Weekly Environ Air Sample, Discovered That Continuous Samples Were Not Drawn at Stations at 1.3,1.4 & 1.5.Caused by Open Windings of Motor. Replacement Pumps Installed | /03L-0:on 810317,during Weekly Environ Air Sample, Discovered That Continuous Samples Were Not Drawn at Stations at 1.3,1.4 & 1.5.Caused by Open Windings of Motor. Replacement Pumps Installed | |
| 05000271/LER-1981-009, Forwards LER 81-009/03L-0 | Forwards LER 81-009/03L-0 | |
| 05000271/LER-1981-010, Forwards LER 81-010/03L-0 | Forwards LER 81-010/03L-0 | |
| 05000271/LER-1981-010-03, /03L-0:on 810322,during Power Operation,Field Breaker Failed to Open When B Rrmg Set Shut Down for Maint. Caused by Lack of Lubrication on Binding.Breaker AK-25 Lubricated | /03L-0:on 810322,during Power Operation,Field Breaker Failed to Open When B Rrmg Set Shut Down for Maint. Caused by Lack of Lubrication on Binding.Breaker AK-25 Lubricated | |
| 05000271/LER-1981-011-03, /03L-0:on 810507,during Normal Operation of Reactor Water Cleanup Sys,Leak Discovered in 1x34 Inch Socket Weld Reducing Fitting in tube-side Drain Line of Regenerative Heat Exchanger E-15-1A.Cause Being Analyzed | /03L-0:on 810507,during Normal Operation of Reactor Water Cleanup Sys,Leak Discovered in 1x34 Inch Socket Weld Reducing Fitting in tube-side Drain Line of Regenerative Heat Exchanger E-15-1A.Cause Being Analyzed | |
| 05000271/LER-1981-011, Forwards LER 81-011/03L-0 | Forwards LER 81-011/03L-0 | |
| 05000271/LER-1981-012, Forwards LER 81-012/03L-0 | Forwards LER 81-012/03L-0 | |
| 05000271/LER-1981-012-03, /03L-0:on 810512,shock Suppressor on Main Steam D Piping Found W/No Visible Fluid in Site Glass Resulting in Failure to Lock Up within Procedural Tolerance When Tested in as-found Condition.Cause Not Determined | /03L-0:on 810512,shock Suppressor on Main Steam D Piping Found W/No Visible Fluid in Site Glass Resulting in Failure to Lock Up within Procedural Tolerance When Tested in as-found Condition.Cause Not Determined | |
| 05000271/LER-1981-013, Forwards LER 81-013/03L-0 | Forwards LER 81-013/03L-0 | |
| 05000271/LER-1981-013-03, /03L-0:on 810505,during Environ Air Sample Collections,Continuous Samples Found Not Drawn at Station at 1.4,in Violation of Tech Spec Table 3.9.1.Caused by Defective Windings.Failed Pumps Replaced | /03L-0:on 810505,during Environ Air Sample Collections,Continuous Samples Found Not Drawn at Station at 1.4,in Violation of Tech Spec Table 3.9.1.Caused by Defective Windings.Failed Pumps Replaced | |
| 05000271/LER-1981-014-03, /03L-0:on 810518,diesel Generator a Shut Down During Monthly Surveillance Test.Caused by Substantial Coolant Leakage in Cylinder Cooling Water Jacket Outlet Due to Failed Gasket.Gasket Replaced | /03L-0:on 810518,diesel Generator a Shut Down During Monthly Surveillance Test.Caused by Substantial Coolant Leakage in Cylinder Cooling Water Jacket Outlet Due to Failed Gasket.Gasket Replaced | |
| 05000271/LER-1981-014, Forwards LER 81-014/03L-0 | Forwards LER 81-014/03L-0 | |
| 05000271/LER-1981-015, Forwards LER 81-015/03L-0 | Forwards LER 81-015/03L-0 | |
| 05000271/LER-1981-015-03, /03L-0:on 810528,air Circuit Breaker for Pump P-8-1B Tripped Free When Closed,Preventing Performance of LPCI Sys Logic Test.Caused by Worn Bushings on Operating Mechanism.Circuit Breaker Replaced & Tested | /03L-0:on 810528,air Circuit Breaker for Pump P-8-1B Tripped Free When Closed,Preventing Performance of LPCI Sys Logic Test.Caused by Worn Bushings on Operating Mechanism.Circuit Breaker Replaced & Tested | |
| 05000271/LER-1981-016, Forwards Updated LER 81-016/03X-1 | Forwards Updated LER 81-016/03X-1 | |
| 05000271/LER-1981-016-03, Small Leak Found in Socket Weld Reducing Fitting in Vent Line of Regenerative Heat Exchanger E-15-1A.Caused by Intergranular Stress Corrosion Cracking Due to Wetting of Asbestos Insulation | Small Leak Found in Socket Weld Reducing Fitting in Vent Line of Regenerative Heat Exchanger E-15-1A.Caused by Intergranular Stress Corrosion Cracking Due to Wetting of Asbestos Insulation | |
| 05000271/LER-1981-017, Forwards LER 81-017/03L-1 | Forwards LER 81-017/03L-1 | |
| 05000271/LER-1981-017-03, /03L-1:on 810629,containment Isolation Valve LRN-95 Failed to Close During Quarterly Surveillance.Caused by three-way Air Solenoid Failure to Exhaust Air Due to Dirt Plugging Port.Solenoid Was Cleaned,Tested & Returned to Sv | /03L-1:on 810629,containment Isolation Valve LRN-95 Failed to Close During Quarterly Surveillance.Caused by three-way Air Solenoid Failure to Exhaust Air Due to Dirt Plugging Port.Solenoid Was Cleaned,Tested & Returned to Svc | |
| 05000271/LER-1981-018, Forwards LER 81-018/03L-0 | Forwards LER 81-018/03L-0 | |
| 05000271/LER-1981-018-03, /03L-0:on 810713,Core Spray Subsys a Was Inoperable.Caused by Operator Holding Control Switch Closed, Resulting in Reactor Trip & Inability of Core Spray Valve V14-11A to Be Opened from Control Room.Breaker Reset | /03L-0:on 810713,Core Spray Subsys a Was Inoperable.Caused by Operator Holding Control Switch Closed, Resulting in Reactor Trip & Inability of Core Spray Valve V14-11A to Be Opened from Control Room.Breaker Reset | |
| 05000271/LER-1981-019-03, /03L-0:on 810306,during Surveillance Testing of Standby Gas Treatment Charcoal Cells,Interfering Leak Found on Chromatogram.Cause Not Stated.Charcoal Replaced & Tested Satisfactorily | /03L-0:on 810306,during Surveillance Testing of Standby Gas Treatment Charcoal Cells,Interfering Leak Found on Chromatogram.Cause Not Stated.Charcoal Replaced & Tested Satisfactorily | |
| 05000271/LER-1981-019, Forwards LER 81-019/03L-0 | Forwards LER 81-019/03L-0 | |
| 05000271/LER-1981-020-03, /03L-0:on 810715,four Motor Mount Bolts on Limitorque Operator for Valve RHR-31B Found Sheared, Rendering Containment B Spray Subsystem Inoperable.Cause Unknown.Motor & Mounting Blocks Replaced | /03L-0:on 810715,four Motor Mount Bolts on Limitorque Operator for Valve RHR-31B Found Sheared, Rendering Containment B Spray Subsystem Inoperable.Cause Unknown.Motor & Mounting Blocks Replaced | |
| 05000271/LER-1981-020, Forwards LER 81-020/03L-0 | Forwards LER 81-020/03L-0 | |
| 05000271/LER-1981-021-03, /03L-0:on 810730,containment Isolation Valve V20-94 Failed to Close During Surveillance Testing.Possibly Caused by Normal Wear W/Accumulation of Minor Amounts of Dirt.Insp of Air Solenoid Valve Was Inconclusive | /03L-0:on 810730,containment Isolation Valve V20-94 Failed to Close During Surveillance Testing.Possibly Caused by Normal Wear W/Accumulation of Minor Amounts of Dirt.Insp of Air Solenoid Valve Was Inconclusive | |
| 05000271/LER-1981-021, Forwards LER 81-021/03L-0 | Forwards LER 81-021/03L-0 | |
| 05000271/LER-1981-022, Forwards LER 81-022/03L-0 | Forwards LER 81-022/03L-0 | |
| 05000271/LER-1981-022-03, /03L-0:on 810801,MSIV-80D Failed to Close When Control Switch Was Placed in Closed Position.Caused by Foreign Particle Lodged in Spool Valve,Preventing Air from Operating Main Piston.Msiv Fully Stroked | /03L-0:on 810801,MSIV-80D Failed to Close When Control Switch Was Placed in Closed Position.Caused by Foreign Particle Lodged in Spool Valve,Preventing Air from Operating Main Piston.Msiv Fully Stroked | |
| 05000271/LER-1981-023-03, /03L-0:on 810829,loss of Power to RRU-4 Discovered Due to Tripped Breaker,Resulting in Complete Loss of Power to MCC-9D Which Rendered Inboard HPCI Isolation Valve V23-15 & RHR Svc Water Subsys Inoperable.Caused by Short Cir | /03L-0:on 810829,loss of Power to RRU-4 Discovered Due to Tripped Breaker,Resulting in Complete Loss of Power to MCC-9D Which Rendered Inboard HPCI Isolation Valve V23-15 & RHR Svc Water Subsys Inoperable.Caused by Short Circuit | |
| 05000271/LER-1981-023, Forwards LER 81-023/03L-0 | Forwards LER 81-023/03L-0 | |
| 05000271/LER-1981-024-03, /03L-0:on 810819,during Monthly Surveillance Testing,Reactor Core Isolation Cooling Tripped Via Mechanical Overspeed.Caused by Failure of Egr.Egr Replaced | /03L-0:on 810819,during Monthly Surveillance Testing,Reactor Core Isolation Cooling Tripped Via Mechanical Overspeed.Caused by Failure of Egr.Egr Replaced | |
| 05000271/LER-1981-024, Forwards LER 81-024/03L-0 | Forwards LER 81-024/03L-0 | |
| 05000271/LER-1981-025, Forwards LER 81-025/03L-0 | Forwards LER 81-025/03L-0 | |