| | | Reporting criterion |
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| 05000317/LER-1981-001-01, /01T-0:on 810114,feedwater Transmitter Out of Calibr,Resulting in Erroneous Adjustments to ex-core Nuclear Instrument Channels.Transmitter Failed to Maintain Calibr. Transmitter Replaced.Cause of Shift in Calibr Not Stated | /01T-0:on 810114,feedwater Transmitter Out of Calibr,Resulting in Erroneous Adjustments to ex-core Nuclear Instrument Channels.Transmitter Failed to Maintain Calibr. Transmitter Replaced.Cause of Shift in Calibr Not Stated | |
| 05000317/LER-1981-001, Forwards LER 81-001/01T-0 | Forwards LER 81-001/01T-0 | |
| 05000318/LER-1981-001-03, /03L-0:on 810107,Channel B Reactor Protective Sys Trip Units for High Power,Thermal Margin/Low Pressure & Axial Flux Offset Bypassed for Troubleshooting Linear Power Range Instrument.Detector Output Faulty | /03L-0:on 810107,Channel B Reactor Protective Sys Trip Units for High Power,Thermal Margin/Low Pressure & Axial Flux Offset Bypassed for Troubleshooting Linear Power Range Instrument.Detector Output Faulty | |
| 05000318/LER-1981-001, Forwards LER 81-001/03L-0 | Forwards LER 81-001/03L-0 | |
| 05000318/LER-1981-002-03, /03L-0:on 810108,diesel Generator 12 Started Automatically.Possibly Caused by Control Relays in Abnormal State.Generator Reset & Tested | /03L-0:on 810108,diesel Generator 12 Started Automatically.Possibly Caused by Control Relays in Abnormal State.Generator Reset & Tested | |
| 05000318/LER-1981-002, Forwards LER 81-002/03L-0 | Forwards LER 81-002/03L-0 | |
| 05000317/LER-1981-002-03, /03L-0:on 810111,auxiliary Feedwater Flow to Steam Generators Found Set Below Normal Limit.Caused by Feed Regulating Valve Stroke Limitation Implemented Under Mods Required by NUREG-0578.Restriction Removed on 810122 | /03L-0:on 810111,auxiliary Feedwater Flow to Steam Generators Found Set Below Normal Limit.Caused by Feed Regulating Valve Stroke Limitation Implemented Under Mods Required by NUREG-0578.Restriction Removed on 810122 | |
| 05000317/LER-1981-002, Forwards LER 81-002/03L-0 | Forwards LER 81-002/03L-0 | |
| 05000317/LER-1981-003-03, /03L-0:on 810217,engineered Safety Features Actuation Sys Channel 2D 12 Steam Generator Pressure Isolator Found Out of Spec.Caused by Transmation Isolator w/non-liner Output.Isolator Replaced | /03L-0:on 810217,engineered Safety Features Actuation Sys Channel 2D 12 Steam Generator Pressure Isolator Found Out of Spec.Caused by Transmation Isolator w/non-liner Output.Isolator Replaced | |
| 05000317/LER-1981-003, Forwards LER 81-003/03L-0 | Forwards LER 81-003/03L-0 | |
| 05000318/LER-1981-003-03, /03L-0:on 810123,shutdown Cooling Return Header Isolation valve,MOV-652,lost Valve Position Indication & Flow Was Stopped.Caused by Motor Control Center Power Transfer.Transfer Completed,Indication & Flow Restored | /03L-0:on 810123,shutdown Cooling Return Header Isolation valve,MOV-652,lost Valve Position Indication & Flow Was Stopped.Caused by Motor Control Center Power Transfer.Transfer Completed,Indication & Flow Restored | |
| 05000318/LER-1981-003, Forwards LER 81-003/03L-0 | Forwards LER 81-003/03L-0 | |
| 05000317/LER-1981-004-03, /03L-0:on 810119,containment Cooler 8-inch SRW Discharge valve,1-CV-1593,failed to Open.Caused by Solenoid valve,1-SV-1593,not Allowing 1-CV-1593 to Open.Solenoid Valve Replaced W/Spare & Parts Kit Installed | /03L-0:on 810119,containment Cooler 8-inch SRW Discharge valve,1-CV-1593,failed to Open.Caused by Solenoid valve,1-SV-1593,not Allowing 1-CV-1593 to Open.Solenoid Valve Replaced W/Spare & Parts Kit Installed | |
| 05000317/LER-1981-004-01, Containment Cooler 8-inch SRW Discharge Valve Failed to Open.Apparently Caused by Low Differential Pressure Rating of Solenoid Valve That Would Not Vent to Allow Discharge Valve to Open | Containment Cooler 8-inch SRW Discharge Valve Failed to Open.Apparently Caused by Low Differential Pressure Rating of Solenoid Valve That Would Not Vent to Allow Discharge Valve to Open | |
| 05000318/LER-1981-004, Forwards LER 81-004/03L-0 | Forwards LER 81-004/03L-0 | |
| 05000318/LER-1981-004-03, /03L-0:on 810204, While Conducting Preventive Maint,Shutdown Cooling Flow Lost.Caused by Procedure Not Containing Sufficient Info.Flow Lost Due to de-energized Vital Ac Bus Causing Valve to Shut.Procedure Revised | /03L-0:on 810204, While Conducting Preventive Maint,Shutdown Cooling Flow Lost.Caused by Procedure Not Containing Sufficient Info.Flow Lost Due to de-energized Vital Ac Bus Causing Valve to Shut.Procedure Revised | |
| 05000317/LER-1981-004, Forwards LER 81-004/03L-0 | Forwards LER 81-004/03L-0 | |
| 05000318/LER-1981-005, Forwards LER 81-005/01T-0 | Forwards LER 81-005/01T-0 | |
| 05000318/LER-1981-005-01, /01T-0:on 810118,w/reactor Coolant Sys at 220 F & 230 Psia,Presssure Transmitter Failed High,Causing Power Relief Valve RC-404-ERV to Open.Caused by Loose Oscillator/ Amplifier Assembly within Transmitter 2-PT-103-1 | /01T-0:on 810118,w/reactor Coolant Sys at 220 F & 230 Psia,Presssure Transmitter Failed High,Causing Power Relief Valve RC-404-ERV to Open.Caused by Loose Oscillator/ Amplifier Assembly within Transmitter 2-PT-103-1 | |
| 05000317/LER-1981-005-03, /03L-0:on 810119,during Surveillance Testing, Containment Cooler 14 Would Not Start in Slow Speed.Caused by Contacts Not Closing on Slow Speed Motor Starter Interlock Contact Assembly Due to Cracked Case | /03L-0:on 810119,during Surveillance Testing, Containment Cooler 14 Would Not Start in Slow Speed.Caused by Contacts Not Closing on Slow Speed Motor Starter Interlock Contact Assembly Due to Cracked Case | |
| 05000317/LER-1981-005, Forwards LER 81-005/03L-0 | Forwards LER 81-005/03L-0 | |
| 05000317/LER-1981-006, Forwards LER 81-006/03L-0 | Forwards LER 81-006/03L-0 | |
| 05000317/LER-1981-006-03, /03L-0:on 810113,steam Generator 11,level Channel D Placed Out of Svc Per Tech Specs to Correct Problem W/Ref Leg.Caused by Indication Deviation Among Redundant Safety Channels Due to Level Transmitter Valve leak-through | /03L-0:on 810113,steam Generator 11,level Channel D Placed Out of Svc Per Tech Specs to Correct Problem W/Ref Leg.Caused by Indication Deviation Among Redundant Safety Channels Due to Level Transmitter Valve leak-through | |
| 05000318/LER-1981-006, Forwards LER 81-006/03L-0 | Forwards LER 81-006/03L-0 | |
| 05000318/LER-1981-006-03, /03L-0:on 810113 Diesel Generator 12 Switchgear Would Not Close in on 21 4-kV Bus Per Tech Spec.Caused by High Resistance at Secondary Disconnect.Continuity of Closing Circuit Interlocks Verified & Switchgear Tested | /03L-0:on 810113 Diesel Generator 12 Switchgear Would Not Close in on 21 4-kV Bus Per Tech Spec.Caused by High Resistance at Secondary Disconnect.Continuity of Closing Circuit Interlocks Verified & Switchgear Tested | |
| 05000318/LER-1981-007-03, MSIVs 21 & 22 Failed to Shut within Required Time Limit.Caused by Galled Stems of Packing Junk Ring.Rings Replaced | MSIVs 21 & 22 Failed to Shut within Required Time Limit.Caused by Galled Stems of Packing Junk Ring.Rings Replaced | |
| 05000317/LER-1981-007-03, /03L-0:on 810112,engineered Safety Features Actuation Sys Sensor Channel Ze for Steam Generator 12 Pressure Placed Out of Svc.Caused by Failure of Transmation Isolator (230IT) 1-E/E-1023B.Isolator Output Found Low | /03L-0:on 810112,engineered Safety Features Actuation Sys Sensor Channel Ze for Steam Generator 12 Pressure Placed Out of Svc.Caused by Failure of Transmation Isolator (230IT) 1-E/E-1023B.Isolator Output Found Low | |
| 05000317/LER-1981-007, Forwards LER 81-007/03L-0 | Forwards LER 81-007/03L-0 | |
| 05000318/LER-1981-007, Forwards LER 81-007/03L-0 | Forwards LER 81-007/03L-0 | |
| 05000317/LER-1981-008, Forwards LER 81-008/01T-0 | Forwards LER 81-008/01T-0 | |
| 05000318/LER-1981-008-03, /03L-0:on 810113,steam Generator 22 Low Pressure Bistable Meter 2D Found Out of Calibr & Signal Isolator 2-E/E-1023A Failed.Caused by Natural Wear & Aging.Cause of Isolator Failure Not Stated | /03L-0:on 810113,steam Generator 22 Low Pressure Bistable Meter 2D Found Out of Calibr & Signal Isolator 2-E/E-1023A Failed.Caused by Natural Wear & Aging.Cause of Isolator Failure Not Stated | |
| 05000317/LER-1981-008-01, /01T-0:on 810203,discovered That When Fire Hose Stations in Auxiliary Bldg & Unit 2 Containment Bldg Were Isolated,Backup Fire Hose Not Routed as Required.Caused by Personnel Error.Backup Hoses Routed as Required | /01T-0:on 810203,discovered That When Fire Hose Stations in Auxiliary Bldg & Unit 2 Containment Bldg Were Isolated,Backup Fire Hose Not Routed as Required.Caused by Personnel Error.Backup Hoses Routed as Required | |
| 05000318/LER-1981-008, Forwards LER 81-008/03L-0 | Forwards LER 81-008/03L-0 | |
| 05000318/LER-1981-009-03, /03L-0:on 810330,during Normal Power Operation, Motor Operated Isolation Valve in Saltwater Sys Would Not Operate Electrically.Caused by Tripped Overload Devices on Phase a & C.Devices Reset | /03L-0:on 810330,during Normal Power Operation, Motor Operated Isolation Valve in Saltwater Sys Would Not Operate Electrically.Caused by Tripped Overload Devices on Phase a & C.Devices Reset | |
| 05000317/LER-1981-009-03, /03L-0:on 810205,reactor Protector Sys Channel D Trip Units Bypassed.Caused by Increase in Temp Detector Resistance,Probably Due to Increased Connection Resistance in Containment.Input Removed from Channel D | /03L-0:on 810205,reactor Protector Sys Channel D Trip Units Bypassed.Caused by Increase in Temp Detector Resistance,Probably Due to Increased Connection Resistance in Containment.Input Removed from Channel D | |
| 05000318/LER-1981-009, Forwards LER 81-009/03L-0 | Forwards LER 81-009/03L-0 | |
| 05000317/LER-1981-009, Forwards LER 81-009/03L-0 | Forwards LER 81-009/03L-0 | |
| 05000318/LER-1981-010, Forwards LER 81-010/03L-0 | Forwards LER 81-010/03L-0 | |
| 05000318/LER-1981-010-03, /03L-0:on 810301,power-operated Relief Valve ERV-402 Failed to Seat Resulting in Valve Isolation.Caused by Insufficient Pressure in Sys While Filling Rcs.Pressure Raised & Valve Seated | /03L-0:on 810301,power-operated Relief Valve ERV-402 Failed to Seat Resulting in Valve Isolation.Caused by Insufficient Pressure in Sys While Filling Rcs.Pressure Raised & Valve Seated | |
| 05000317/LER-1981-010, Forwards LER 81-010/03L-0 | Forwards LER 81-010/03L-0 | |
| 05000317/LER-1981-010-03, /03L-0:on 810123,nipple Broken on Valve CV-5178, Salt Water Emergency Return Isolation from ECCS Pump Room Coolers.Caused by Lead Brick Fall During Const of Lead Shield Wall.Valve Isolated & Nipple Replaced | /03L-0:on 810123,nipple Broken on Valve CV-5178, Salt Water Emergency Return Isolation from ECCS Pump Room Coolers.Caused by Lead Brick Fall During Const of Lead Shield Wall.Valve Isolated & Nipple Replaced | |
| 05000317/LER-1981-011, Forwards LER 81-011/03L-0 | Forwards LER 81-011/03L-0 | |
| 05000317/LER-1981-011-03, /03L-0:on 810212,thermal Margin/Low Pressure & Steam Generator Low Pressure Trip Units Bypassed While Investigating Intermittent Failures of Reactor Protective Sys Channel D Steam Generator Pressure | /03L-0:on 810212,thermal Margin/Low Pressure & Steam Generator Low Pressure Trip Units Bypassed While Investigating Intermittent Failures of Reactor Protective Sys Channel D Steam Generator Pressure | |
| 05000318/LER-1981-011-03, /03L-0:on 810404,steam Generator 21 Pressure Instrument 2-PY-1013D Failed,Causing Channel D Thermal Margin/Low Pressure Trip.Caused by Failure of Sealed, Nonadjustable,Solid State Load Isolator.Device Discarded | /03L-0:on 810404,steam Generator 21 Pressure Instrument 2-PY-1013D Failed,Causing Channel D Thermal Margin/Low Pressure Trip.Caused by Failure of Sealed, Nonadjustable,Solid State Load Isolator.Device Discarded | |
| 05000318/LER-1981-011, Forwards LER 81-011/03L-0 | Forwards LER 81-011/03L-0 | |
| 05000317/LER-1981-012, Forwards LER 81-012/03L-0 | Forwards LER 81-012/03L-0 | |
| 05000317/LER-1981-012-03, /03L-0:on 810213,while Shifting from 1 to 2 Running Charging Pumps,Letdown Relief Valve CVC-345-RV Lifted & Failed to Reseat.Possibly Caused by Pressure Surge in Line.Valve Matls Review Being Conducted | /03L-0:on 810213,while Shifting from 1 to 2 Running Charging Pumps,Letdown Relief Valve CVC-345-RV Lifted & Failed to Reseat.Possibly Caused by Pressure Surge in Line.Valve Matls Review Being Conducted | |
| 05000317/LER-1981-013, Forwards LER 81-013/03L-0 | Forwards LER 81-013/03L-0 | |
| 05000317/LER-1981-013-03, /03L-0:on 810217,inboard Turbine Bearing Journal in Auxiliary Feedwater Pump 11 Was Found Heavily Heat Scored & Babbit Matl Was Suspended in Oil.Probably Caused by Improper Oil Level or Contaminated Oil.Procedures Changed | /03L-0:on 810217,inboard Turbine Bearing Journal in Auxiliary Feedwater Pump 11 Was Found Heavily Heat Scored & Babbit Matl Was Suspended in Oil.Probably Caused by Improper Oil Level or Contaminated Oil.Procedures Changed | |
| 05000318/LER-1981-013-03, /03L-0:on 810304,while Installing Instrumentation, Temporary Shunt Opened,Causing Loss of Power to Low Pressure Safety Injection Pump 22 & Momentary Loss of Shutdown Cooling Flow.Caused by Opened Lead on One End of Shunt | /03L-0:on 810304,while Installing Instrumentation, Temporary Shunt Opened,Causing Loss of Power to Low Pressure Safety Injection Pump 22 & Momentary Loss of Shutdown Cooling Flow.Caused by Opened Lead on One End of Shunt | |
