| | | Reporting criterion |
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| 05000220/LER-1980-001-03, /03L-0:on 800102,during Steady State Operation, Calculations Determined Planar Linear Heat Generation Rate Exceeded Tech Specs.Cause Unknown.Power Decreased. Calculation Revealed Heating Generation Rate within Limits | /03L-0:on 800102,during Steady State Operation, Calculations Determined Planar Linear Heat Generation Rate Exceeded Tech Specs.Cause Unknown.Power Decreased. Calculation Revealed Heating Generation Rate within Limits | |
| 05000220/LER-1980-001, Forwards LER 80-001/03L-0 | Forwards LER 80-001/03L-0 | |
| 05000220/LER-1980-002, Forwards LER 80-002/04L-0 | Forwards LER 80-002/04L-0 | |
| 05000220/LER-1980-002-04, /04L-0:on 800109,during Steady State Operation, Review of Differential Recorder Revealed Condenser Inlet/ Screenwell Discharge Differential Temp Went Over Established Limits.Caused by Instrument Malfunction | /04L-0:on 800109,during Steady State Operation, Review of Differential Recorder Revealed Condenser Inlet/ Screenwell Discharge Differential Temp Went Over Established Limits.Caused by Instrument Malfunction | |
| 05000220/LER-1980-003-01, /01T-0:on 800109,lab Analysis Not Performed on Charcoal Filter Samples from Rx Bldg & Control Room Emergency Ventilation Sys Per Tech Specs.Caused by Change in Operating Cycle Length.Will Revise Surveillance Schedule | /01T-0:on 800109,lab Analysis Not Performed on Charcoal Filter Samples from Rx Bldg & Control Room Emergency Ventilation Sys Per Tech Specs.Caused by Change in Operating Cycle Length.Will Revise Surveillance Schedule | |
| 05000220/LER-1980-003, Forwards LER 80-003/01T-0 | Forwards LER 80-003/01T-0 | |
| 05000220/LER-1980-005-01, /01X-0:on 800203,engineering Evaluation of GE SIL 299 Required That low-low Setpoint for Reactor Core Water Level Be Raised 20 Inches.Caused by Efforts to Precisely Measure Actual to Indicated Water Level Difference | /01X-0:on 800203,engineering Evaluation of GE SIL 299 Required That low-low Setpoint for Reactor Core Water Level Be Raised 20 Inches.Caused by Efforts to Precisely Measure Actual to Indicated Water Level Difference | |
| 05000220/LER-1980-005, Forwards LER 80-005/01X-0 | Forwards LER 80-005/01X-0 | |
| 05000220/LER-1980-006, Forwards LER 80-006/04L-0 | Forwards LER 80-006/04L-0 | |
| 05000220/LER-1980-006-04, /04L-0:on 800123-24,condensor Inlet/Circulating Water Discharge Temp Exceeded Tech Spec Limit.Following Flow Reversal,Discharge Temp Exceeded Lake Ambient by More than Tech Spec Limit.Caused by Instrument Failure | /04L-0:on 800123-24,condensor Inlet/Circulating Water Discharge Temp Exceeded Tech Spec Limit.Following Flow Reversal,Discharge Temp Exceeded Lake Ambient by More than Tech Spec Limit.Caused by Instrument Failure | |
| 05000220/LER-1980-007, Forwards LER 80-007/03L-0 | Forwards LER 80-007/03L-0 | |
| 05000220/LER-1980-007-03, /03L-0:on 800303,while Shutdown for Maint,Attempts to Close Both Air Operated Outside Main Steam Isolation Valves Failed.Caused by Rust Buildup in Pilot Shuttle.New Instrument Air Sys Is Being Installed | /03L-0:on 800303,while Shutdown for Maint,Attempts to Close Both Air Operated Outside Main Steam Isolation Valves Failed.Caused by Rust Buildup in Pilot Shuttle.New Instrument Air Sys Is Being Installed | |
| 05000220/LER-1980-008, Forwards LER 80-008/03L-0 | Forwards LER 80-008/03L-0 | |
| 05000220/LER-1980-008-03, /03L-0:on 800315,during Steady State Operation, Alarm in Control Room Signaled Loss of Flow to Stack Gas Sampling Sys.Caused by Stack Sample Flow Inlet Valve Failing Closed,Due to Arcing Relay Contacts | /03L-0:on 800315,during Steady State Operation, Alarm in Control Room Signaled Loss of Flow to Stack Gas Sampling Sys.Caused by Stack Sample Flow Inlet Valve Failing Closed,Due to Arcing Relay Contacts | |
| 05000220/LER-1980-009, Forwards LER 80-009/03L-0 | Forwards LER 80-009/03L-0 | |
| 05000220/LER-1980-009-03, /03L-0:on 800521,during Steady State Operation, Attempts to Stroke 122 Containment Spray Isolation Valve Failed.Caused by Isolation Valve Solenoids Being Dirty. Revising Procedures to Require Periodic Maint for Valve | /03L-0:on 800521,during Steady State Operation, Attempts to Stroke 122 Containment Spray Isolation Valve Failed.Caused by Isolation Valve Solenoids Being Dirty. Revising Procedures to Require Periodic Maint for Valve | |
| 05000220/LER-1980-010, Forwards LER 80-010/03L-0 | Forwards LER 80-010/03L-0 | |
| 05000220/LER-1980-010-03, /03L-0:on 800528,while Performing Valve Checks, Operator Discovered Cardox Tank Pressure Below Tech Spec Limits.Caused by Delivery of Too Low Temp Carbon Dioxide by Supplier.Low Pressure Alarm Connected | /03L-0:on 800528,while Performing Valve Checks, Operator Discovered Cardox Tank Pressure Below Tech Spec Limits.Caused by Delivery of Too Low Temp Carbon Dioxide by Supplier.Low Pressure Alarm Connected | |
| 05000220/LER-1980-011, Forwards LER 80-011/04L-0 | Forwards LER 80-011/04L-0 | |
| 05000220/LER-1980-011-04, /04L-0:on 800623,recorder Review Showed Condenser Inlet/Circulating Water Discharge Delta Temp Had Exceeded Tech Spec Limit on 800620-23.Station Load Reduced,Recorder Scale Expanded & Tech Spec Change Initiated | /04L-0:on 800623,recorder Review Showed Condenser Inlet/Circulating Water Discharge Delta Temp Had Exceeded Tech Spec Limit on 800620-23.Station Load Reduced,Recorder Scale Expanded & Tech Spec Change Initiated | |
| 05000220/LER-1980-012-03, /03L-0:on 800419,during Surveillance Testing of Turbine Anticipatory Trip Bypass,Rx Scram Switch 02-13A Was Operating Outside Setpoint.Caused by Instrument Drift.Switch Readjusted & Will Be Tested Monthly | /03L-0:on 800419,during Surveillance Testing of Turbine Anticipatory Trip Bypass,Rx Scram Switch 02-13A Was Operating Outside Setpoint.Caused by Instrument Drift.Switch Readjusted & Will Be Tested Monthly | |
| 05000220/LER-1980-012, Forwards LER 80-012/03L-0 | Forwards LER 80-012/03L-0 | |
| 05000220/LER-1980-014-03, /03L-0:on 800717,during start-up Performance for IE Bulletin 80-17 Auto Scram Test,Operability Test Attempted on Valve During Shutdown Period.Valve Failed to Open Upon Manual Initiation.Valve Removed & Disassembled | /03L-0:on 800717,during start-up Performance for IE Bulletin 80-17 Auto Scram Test,Operability Test Attempted on Valve During Shutdown Period.Valve Failed to Open Upon Manual Initiation.Valve Removed & Disassembled | |
| 05000220/LER-1980-014, Forwards LER 80-014/03L-0 | Forwards LER 80-014/03L-0 | |
| 05000220/LER-1980-015, Forwards LER 80-015/04L-0 | Forwards LER 80-015/04L-0 | |
| 05000220/LER-1980-015-04, /04L-0:on 800804,during Steady State Operation, Offgas Monitoring Sys Inadvertently Placed in Purge Mode of Operation.Caused by Technician Error.Sys Returned to Normal Operating Mode,Restoring Sys Operability | /04L-0:on 800804,during Steady State Operation, Offgas Monitoring Sys Inadvertently Placed in Purge Mode of Operation.Caused by Technician Error.Sys Returned to Normal Operating Mode,Restoring Sys Operability | |
| 05000220/LER-1980-018-03, /03L-0:on 800808,during Normal Operation, Emergency Diesel Generator 103 Fuel Oil Day Tank Low Level Alarm Was Received.Caused by Inadvertent Opening of Day Tank Drain Valve.Tank Refilled.Oil Valve Sys Locked | /03L-0:on 800808,during Normal Operation, Emergency Diesel Generator 103 Fuel Oil Day Tank Low Level Alarm Was Received.Caused by Inadvertent Opening of Day Tank Drain Valve.Tank Refilled.Oil Valve Sys Locked | |
| 05000220/LER-1980-018, Forwards LER 80-018/03L-0 | Forwards LER 80-018/03L-0 | |
| 05000220/LER-1980-019, Forwards LER 80-019/04T-0 | Forwards LER 80-019/04T-0 | |
| 05000220/LER-1980-019-04, /04T-0:on 800827,during NRC Insp at Normal Operation,Discovered Removable Bottom Door Seals of Outer Door of Reactor Bldg Track Bay Were Not Installed Properly. Caused by Personnel Error | /04T-0:on 800827,during NRC Insp at Normal Operation,Discovered Removable Bottom Door Seals of Outer Door of Reactor Bldg Track Bay Were Not Installed Properly. Caused by Personnel Error | |
| 05000220/LER-1980-020, Forwards LER 80-020/03L-0 | Forwards LER 80-020/03L-0 | |
| 05000220/LER-1980-020-03, /03L-0:on 800830,while Experiencing Electrical Storm During Normal Operation,Loss of Meteorological Data Transmission to Control Room Instruments Occurred.Caused by Transceiver Failure.Transceiver Repaired & Returned to Svc | /03L-0:on 800830,while Experiencing Electrical Storm During Normal Operation,Loss of Meteorological Data Transmission to Control Room Instruments Occurred.Caused by Transceiver Failure.Transceiver Repaired & Returned to Svc | |
| 05000220/LER-1980-022-03, /03L-0:on 800927,low Power Range Monitor Detector Failed Rendering Average Power Range Monitor 18 Inoperable. Caused by Internal Shorting.Low Power Range Monitor Will Be Replaced During Next Refueling | /03L-0:on 800927,low Power Range Monitor Detector Failed Rendering Average Power Range Monitor 18 Inoperable. Caused by Internal Shorting.Low Power Range Monitor Will Be Replaced During Next Refueling | |
| 05000220/LER-1980-022, Forwards LER 80-022/03L-0 | Forwards LER 80-022/03L-0 | |
| 05000220/LER-1980-023, Forwards LER 80-023/03L-0 | Forwards LER 80-023/03L-0 | |
| 05000220/LER-1980-023-03, /03L-0:on 800922,111 Absolute Filter Access Cover Was Found Off Housing.Caused by Residual Pressure in Containment Nitrogen Inerting Line Pressurizing Filter Housing When Torus Venting Initiated.Cover Reinstalled | /03L-0:on 800922,111 Absolute Filter Access Cover Was Found Off Housing.Caused by Residual Pressure in Containment Nitrogen Inerting Line Pressurizing Filter Housing When Torus Venting Initiated.Cover Reinstalled | |
| 05000220/LER-1980-024-03, /03L-0:on 800930,during Audit,Discovered That Point Valve Was Not Recorded on 790721 Instrument Surveillance Test for Drywell High Pressure Trip Sys.Caused by Personnel oversight.Two-level Review Instituted | /03L-0:on 800930,during Audit,Discovered That Point Valve Was Not Recorded on 790721 Instrument Surveillance Test for Drywell High Pressure Trip Sys.Caused by Personnel oversight.Two-level Review Instituted | |
| 05000220/LER-1980-024, Forwards LER 80-024/03L-0 | Forwards LER 80-024/03L-0 | |
| 05000220/LER-1980-025, Forwards LER 80-025/03L-0 | Forwards LER 80-025/03L-0 | |
| 05000220/LER-1980-025-03, /03L-0:on 801028,stack Gas Monitoring Sys Rendered Inoperable When Inadvertently Left in Purge Operation Mode for 9.5-h.Caused by Technician Failing to Return Sys to Normal Operation.Monitor Returned to Operation | /03L-0:on 801028,stack Gas Monitoring Sys Rendered Inoperable When Inadvertently Left in Purge Operation Mode for 9.5-h.Caused by Technician Failing to Return Sys to Normal Operation.Monitor Returned to Operation | |
| 05000220/LER-1980-026-01, /01T-0:on 801118,input Error Discovered Which Resulted in Reduction in Calculated Pressure Margin to Reactor Safety Valve Setpoints During Possible Transients | /01T-0:on 801118,input Error Discovered Which Resulted in Reduction in Calculated Pressure Margin to Reactor Safety Valve Setpoints During Possible Transients | |
| 05000220/LER-1980-026, Forwards LER 80-026/01T-0 | Forwards LER 80-026/01T-0 | |
| 05000220/LER-1980-027, Forwards LER 80-027/03L-0 | Forwards LER 80-027/03L-0 | |
| 05000220/LER-1980-027-03, /03L-0:on 801126,operability Tests Were Not Immediately Performed as Required.Caused by Misunderstanding of Intent of Procedure.Testing Performed | /03L-0:on 801126,operability Tests Were Not Immediately Performed as Required.Caused by Misunderstanding of Intent of Procedure.Testing Performed | |
| 05000220/LER-1980-028, Forwards LER 80-028/04T-0 | Forwards LER 80-028/04T-0 | |
| 05000220/LER-1980-028-04, /04T-0:on 801215,results of 801103,26 & 1201 Milk Sample Tests Showed Detectable I-131 at Three Locations. Caused by Chinese Nuclear Weapons Test During Oct.Plant Not Accountable for Detected Levels | /04T-0:on 801215,results of 801103,26 & 1201 Milk Sample Tests Showed Detectable I-131 at Three Locations. Caused by Chinese Nuclear Weapons Test During Oct.Plant Not Accountable for Detected Levels | |
| 05000220/LER-1980-030, Forwards LER 80-030/04T-0 | Forwards LER 80-030/04T-0 | |
| 05000220/LER-1980-030-04, /04T-0:on 801204,discovered That Lower Limit of Detection for Radiological Fish Analysis Was Not within Ets. Caused by Conversion Factor.Tech Spec Changes Proposed to Update Parameter | /04T-0:on 801204,discovered That Lower Limit of Detection for Radiological Fish Analysis Was Not within Ets. Caused by Conversion Factor.Tech Spec Changes Proposed to Update Parameter | |
| 05000220/LER-1980-031-01, /01T-0:on 801216,feedwater Flow Control Valve Pneumatic Positioner Unit II Vented Excessive Amount of Air. Caused by Cracked & Worn Rubber Goods.Rubber Goods Replaced & Retested | /01T-0:on 801216,feedwater Flow Control Valve Pneumatic Positioner Unit II Vented Excessive Amount of Air. Caused by Cracked & Worn Rubber Goods.Rubber Goods Replaced & Retested | |
| 05000220/LER-1980-031, Forwards LER 80-031/01T-0 | Forwards LER 80-031/01T-0 | |