| | | Reporting criterion |
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| 05000155/LER-1980-001-03, /03L-0:on 800114,temp Data for Loop 2 of Emergency Condenser Sys Revealed Through Seat Leakage on Normally Closed Outlet Valve M07053.Cause to Be Investigated at Future Shutdown | /03L-0:on 800114,temp Data for Loop 2 of Emergency Condenser Sys Revealed Through Seat Leakage on Normally Closed Outlet Valve M07053.Cause to Be Investigated at Future Shutdown | |
| 05000155/LER-1980-001, Forwards LER 80-001/03L-0 & Update of LER 79-027/03X-1 | Forwards LER 80-001/03L-0 & Update of LER 79-027/03X-1 | |
| 05000155/LER-1980-002-03, /03L-0:on 800124,during Monthly Specific Gravity Checks,Cell 14 of Battery for Channel C of Reactor Depressurizing Sys Read Below Tech Spec.Cause Not Stated. Channel Removed from Svc to Replace Defective Cell | /03L-0:on 800124,during Monthly Specific Gravity Checks,Cell 14 of Battery for Channel C of Reactor Depressurizing Sys Read Below Tech Spec.Cause Not Stated. Channel Removed from Svc to Replace Defective Cell | |
| 05000155/LER-1980-003-03, /03L-0:on 800123,following Automatic Test Circuit Alarm Indication,Channel D of Reactor Depressurizing Sys Removed from Svc for Troubleshooting.Caused by Automatic Test Circuit Component Failure | /03L-0:on 800123,following Automatic Test Circuit Alarm Indication,Channel D of Reactor Depressurizing Sys Removed from Svc for Troubleshooting.Caused by Automatic Test Circuit Component Failure | |
| 05000155/LER-1980-004-01, /01T-0:on 800201,investigation of Minor Temp & Pressure Changes in Reactor Cooling Water Auxiliary Sys Revealed Broken Air Tubing Line to Control Valve CV4029. Possibly Caused by Contractor Workers.Line Repaired | /01T-0:on 800201,investigation of Minor Temp & Pressure Changes in Reactor Cooling Water Auxiliary Sys Revealed Broken Air Tubing Line to Control Valve CV4029. Possibly Caused by Contractor Workers.Line Repaired | |
| 05000155/LER-1980-004, Forwards LER 80-004/01T-0 | Forwards LER 80-004/01T-0 | |
| 05000155/LER-1980-005-03, /03L-0:on 800301,following Several Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Removed from Svc.Caused by Setpoint Drift on Transmitter LT-3183.Transmitter Vented & Returned to S | /03L-0:on 800301,following Several Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Removed from Svc.Caused by Setpoint Drift on Transmitter LT-3183.Transmitter Vented & Returned to Svc | |
| 05000155/LER-1980-005, Forwards LER 80-005/03L-0 | Forwards LER 80-005/03L-0 | |
| 05000155/LER-1980-006-03, /03L-0:on 800403,following Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem. Caused by Setpoint Drift.Unit Was Readjusted | /03L-0:on 800403,following Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem. Caused by Setpoint Drift.Unit Was Readjusted | |
| 05000155/LER-1980-007, Forwards LER 80-007/03L-0 | Forwards LER 80-007/03L-0 | |
| 05000155/LER-1980-007-03, /03L-0:on 800224,during Routine Operation,Excess Vibration Was Noted on Control Rod Drive Pump 2.Caused by Worn Suction Poppet Valves on Pump & Damage to Pump Piping Hangers from Vibration.Valves Replaced & Hangars Repaired | /03L-0:on 800224,during Routine Operation,Excess Vibration Was Noted on Control Rod Drive Pump 2.Caused by Worn Suction Poppet Valves on Pump & Damage to Pump Piping Hangers from Vibration.Valves Replaced & Hangars Repaired | |
| 05000155/LER-1980-008-03, /03L-0:on 800411,following Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem. Caused by Drift.Unit Was Readjusted | /03L-0:on 800411,following Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem. Caused by Drift.Unit Was Readjusted | |
| 05000155/LER-1980-009-03, /03L-0:on 800415,6-month Leakage Tests for Equipment & Personnel Locks to Containment Bldg Completed 5 Days Later than Tech Specs Require.Caused by Incorrectly Logged Surveillance Test Status Board Info | /03L-0:on 800415,6-month Leakage Tests for Equipment & Personnel Locks to Containment Bldg Completed 5 Days Later than Tech Specs Require.Caused by Incorrectly Logged Surveillance Test Status Board Info | |
| 05000155/LER-1980-009, Forwards LER 80-009/03L-0 | Forwards LER 80-009/03L-0 | |
| 05000155/LER-1980-010-03, /03L-0:on 800423,intermittent Automatic Test Circuit Alarmed.Caused by Setpoint Drift in Conservative Direction on Reactor Level Transmitter.Unit Readjusted by Venting & Rezeroing Transmitter | /03L-0:on 800423,intermittent Automatic Test Circuit Alarmed.Caused by Setpoint Drift in Conservative Direction on Reactor Level Transmitter.Unit Readjusted by Venting & Rezeroing Transmitter | |
| 05000155/LER-1980-011-03, /03L-0:on 800501,during Monthly Gravity Checks, Cell 2 of Battery for Channel a of Reactor Depressurizing Sys Read Below Tech Specs.Cell Did Not Respond Adequately to Equalizing Charge.Cause of Failure Unknown.Cell Replaced | /03L-0:on 800501,during Monthly Gravity Checks, Cell 2 of Battery for Channel a of Reactor Depressurizing Sys Read Below Tech Specs.Cell Did Not Respond Adequately to Equalizing Charge.Cause of Failure Unknown.Cell Replaced | |
| 05000155/LER-1980-011, Forwards LER 80-011/03L-0 | Forwards LER 80-011/03L-0 | |
| 05000155/LER-1980-012-03, /03L-0:on 800507,intermittent Automatic Test Circuit Alarmed.Caused by Setpoint Drift in Conservative Direction on Reactor Level Transmitter.Unit Readjusted by Venting & Rezeroing Transmitter | /03L-0:on 800507,intermittent Automatic Test Circuit Alarmed.Caused by Setpoint Drift in Conservative Direction on Reactor Level Transmitter.Unit Readjusted by Venting & Rezeroing Transmitter | |
| 05000155/LER-1980-013-01, /01T-0:on 800509,design Review Indicated That Damage to Air Operator Mechanism Might Occur During Pressure Transient Associated W/Mca in Final Hazards Summary Rept.Caused by Inadequate Specs for Original Valves | /01T-0:on 800509,design Review Indicated That Damage to Air Operator Mechanism Might Occur During Pressure Transient Associated W/Mca in Final Hazards Summary Rept.Caused by Inadequate Specs for Original Valves | |
| 05000155/LER-1980-013, Forwards LER 80-013/01T-0 | Forwards LER 80-013/01T-0 | |
| 05000155/LER-1980-014-03, /03L-0:on 800512,sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem Following Intermittent Automatic Test Circuit Alarms.Caused by Setpoint Drift.Unit Readjusted | /03L-0:on 800512,sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem Following Intermittent Automatic Test Circuit Alarms.Caused by Setpoint Drift.Unit Readjusted | |
| 05000155/LER-1980-015-03, /03L-0:on 800515,sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem Following Intermittent Automatic Test Circuit Alarms.Caused by Setpoint Drift.Unit Readjusted | /03L-0:on 800515,sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem Following Intermittent Automatic Test Circuit Alarms.Caused by Setpoint Drift.Unit Readjusted | |
| 05000155/LER-1980-016-03, /03L-0:on 800527,sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem Following Intermittent Automatic Test Circuit Alarms.Caused by Setpoint Drfit.Unit Readjusted | /03L-0:on 800527,sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Correct Problem Following Intermittent Automatic Test Circuit Alarms.Caused by Setpoint Drfit.Unit Readjusted | |
| 05000155/LER-1980-017, Forwards LER 80-017/03L-0 | Forwards LER 80-017/03L-0 | |
| 05000155/LER-1980-017-03, /03L-0:on 800703,following Intermittent Automatic Test Circuit Alarms,Setpoint Drift in Conservative Direction Found on Reactor Level Transmitter.Cause to Be Investigated. Readjusted Unit by Venting & Rezeroing Transmitter | /03L-0:on 800703,following Intermittent Automatic Test Circuit Alarms,Setpoint Drift in Conservative Direction Found on Reactor Level Transmitter.Cause to Be Investigated. Readjusted Unit by Venting & Rezeroing Transmitter | |
| 05000155/LER-1980-018, Forwards LER 80-018/03L-0 | Forwards LER 80-018/03L-0 | |
| 05000155/LER-1980-018-03, /03L-0:on 800710,during Gravity Check,Cells 35 & 54 of Battery Power Supply for Reactor Depressurizing Sys Channel C Found Below Tech Spec Values.Cause Unknown.Cells Failed to Respond to Charge & Channel Removed from Svc | /03L-0:on 800710,during Gravity Check,Cells 35 & 54 of Battery Power Supply for Reactor Depressurizing Sys Channel C Found Below Tech Spec Values.Cause Unknown.Cells Failed to Respond to Charge & Channel Removed from Svc | |
| 05000155/LER-1980-019, Forwards LER 80-019/03L-0 | Forwards LER 80-019/03L-0 | |
| 05000155/LER-1980-019-03, /03L-0:on 800713,visual Alarm Noted on Containment Pressure Indicator on Unit Pis 173 in Control Room.Cause Not Repetitive.Investigation Revealed Defective Electronic Components in Unit | /03L-0:on 800713,visual Alarm Noted on Containment Pressure Indicator on Unit Pis 173 in Control Room.Cause Not Repetitive.Investigation Revealed Defective Electronic Components in Unit | |
| 05000155/LER-1980-020-03, /03L-0:on 800718,during Weekly Checks of Pilot Cell of Reactor Depressurizing Sys Battery for Channel C, Voltage Anomaly Revealed Defective Three Unit Cell.Caused by Increase in Internal Resistance of Cell Unit 9 | /03L-0:on 800718,during Weekly Checks of Pilot Cell of Reactor Depressurizing Sys Battery for Channel C, Voltage Anomaly Revealed Defective Three Unit Cell.Caused by Increase in Internal Resistance of Cell Unit 9 | |
| 05000155/LER-1980-020, Forwards LER 80-020/03L-0 | Forwards LER 80-020/03L-0 | |
| 05000155/LER-1980-021, Forwards LER 80-021/03L-0 | Forwards LER 80-021/03L-0 | |
| 05000155/LER-1980-021-03, /03L-0:on 800729,following Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Vent Level Transmitter LT3183.Caused by Minor Calibr Shift | /03L-0:on 800729,following Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Was Removed from Svc to Vent Level Transmitter LT3183.Caused by Minor Calibr Shift | |
| 05000155/LER-1980-022, Forwards LER 80-022/03L-0 | Forwards LER 80-022/03L-0 | |
| 05000155/LER-1980-022-03, /03L-0:on 800807,during Monthly Specific Gravity Checks,Cells 38,39 & 56 of Reactor Depressurizing Battery for Channel C Had Low Readings.Cause Not Known.Cell Units 13 & 19 Replaced.Channel C Restored on 800813 | /03L-0:on 800807,during Monthly Specific Gravity Checks,Cells 38,39 & 56 of Reactor Depressurizing Battery for Channel C Had Low Readings.Cause Not Known.Cell Units 13 & 19 Replaced.Channel C Restored on 800813 | |
| 05000155/LER-1980-023, Forwards LER 80-023/01T-0 | Forwards LER 80-023/01T-0 | |
| 05000155/LER-1980-023-01, /01T-0:on 800812,review of Reactor Containment Design for Steam Line Breaks in Primary Sys Indicated That Containment Atmosphere Temp Can Exceed Temp Criteria Previously Used.Operating Instructions Revised | /01T-0:on 800812,review of Reactor Containment Design for Steam Line Breaks in Primary Sys Indicated That Containment Atmosphere Temp Can Exceed Temp Criteria Previously Used.Operating Instructions Revised | |
| 05000155/LER-1980-024-03, /03L-0:on 800814,after Periodic Automatic Test Circuit Alarms,Reactor Depressurizing Sys Sensor Channel D Was Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Caused by Minor Calibr Shift in Transmitter | /03L-0:on 800814,after Periodic Automatic Test Circuit Alarms,Reactor Depressurizing Sys Sensor Channel D Was Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Caused by Minor Calibr Shift in Transmitter | |
| 05000155/LER-1980-025-03, /03L-0:on 800819,after Periodic Automatic Test Circuit Alarms,Reactor Depressurizing Sys Sensor Channel D Was Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Caused by Minor Calibr Shift in Transmitter | /03L-0:on 800819,after Periodic Automatic Test Circuit Alarms,Reactor Depressurizing Sys Sensor Channel D Was Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Caused by Minor Calibr Shift in Transmitter | |
| 05000155/LER-1980-026-03, /03L-0:on 800820,after Periodic Automatic Test Circuit Alarms, Reactor Depressurizing Sys Sensor Channel D Was Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Caused by Minor Calibr Shift in Transmitter | /03L-0:on 800820,after Periodic Automatic Test Circuit Alarms, Reactor Depressurizing Sys Sensor Channel D Was Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Caused by Minor Calibr Shift in Transmitter | |
| 05000155/LER-1980-027-03, /03L-0:on 800814,after Periodicautomatic Test Circuit Alarms,Reactor Depressurizing Sys Sensor Channel D Was Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Caused by Minor Calibr Shift in Transmitter | /03L-0:on 800814,after Periodicautomatic Test Circuit Alarms,Reactor Depressurizing Sys Sensor Channel D Was Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Caused by Minor Calibr Shift in Transmitter | |
| 05000155/LER-1980-028-03, /03L-0:on 800909,following Automatic Test Circuit Alarms,Sensor Channel D Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Tech Spec Change Request Submitted 800825 to Provide Greater Margin in Trip Setpoint | /03L-0:on 800909,following Automatic Test Circuit Alarms,Sensor Channel D Removed from Svc to Vent Reactor Water Level Transmitter LT3183.Tech Spec Change Request Submitted 800825 to Provide Greater Margin in Trip Setpoint | |
| 05000155/LER-1980-029-03, /03L-0:on 800911,during Monthly Gravity Checks, Cell 12 of Reactor Depressurizing Battery for Channel D Had Low Reading of 1.171.Cause Unknown.Cell Replaced 800917 | /03L-0:on 800911,during Monthly Gravity Checks, Cell 12 of Reactor Depressurizing Battery for Channel D Had Low Reading of 1.171.Cause Unknown.Cell Replaced 800917 | |
| 05000155/LER-1980-030-03, /03L-0:on 800919,minor Seat Leakage Discovered in Containment Isolation Valve CV4027.Caused Not Determined. Valve Seat Scheduled for Replacement Due to Previous Indication of Wear | /03L-0:on 800919,minor Seat Leakage Discovered in Containment Isolation Valve CV4027.Caused Not Determined. Valve Seat Scheduled for Replacement Due to Previous Indication of Wear | |
| 05000155/LER-1980-030, Forwards LER 80-030/03L-0 | Forwards LER 80-030/03L-0 | |
| 05000155/LER-1980-031, Forwards LER 80-031/03L-0 | Forwards LER 80-031/03L-0 | |
| 05000155/LER-1980-031-03, /03L-0:on 800923,reactor Level Transmitter LT3183 on Reactor Depressurization Sys Was Returned to Svc W/Trip Setpoint Lower than Required.Caused by Equipment Defect. Revised Setpoints Implemented | /03L-0:on 800923,reactor Level Transmitter LT3183 on Reactor Depressurization Sys Was Returned to Svc W/Trip Setpoint Lower than Required.Caused by Equipment Defect. Revised Setpoints Implemented | |
| 05000155/LER-1980-032-03, /03L-0:on 800917,following Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Was Removed to Vent Reactor Water Level Transmitter LT3183.Caused by Conservative Calibr Shift | /03L-0:on 800917,following Intermittent Automatic Test Circuit Alarms,Sensor Channel D of Reactor Depressurizing Sys Was Removed to Vent Reactor Water Level Transmitter LT3183.Caused by Conservative Calibr Shift | |
| 05000155/LER-1980-033-01, /01T-0:on 801003,investigation of 800927 Minor Leak in Reactor Cleanup Demineralizer Sys Established Event Reportability.Caused by Bearing Failure of Canned Rotor Pump | /01T-0:on 801003,investigation of 800927 Minor Leak in Reactor Cleanup Demineralizer Sys Established Event Reportability.Caused by Bearing Failure of Canned Rotor Pump | |
| 05000155/LER-1980-034-01, /01T-0:on 801101,during Routine Shutdown Operations,Main Steam Isolation Valve M07050 Failed to Close on Remote Manual Initiation.Caused by Hardened Packing Matl on Valve Stem.Other Packing Techniques Are Being Considered | /01T-0:on 801101,during Routine Shutdown Operations,Main Steam Isolation Valve M07050 Failed to Close on Remote Manual Initiation.Caused by Hardened Packing Matl on Valve Stem.Other Packing Techniques Are Being Considered | |
