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| 05000265/LER-1981-001-03, /03L-0:on 810116,during High Drywell Pressure Calibr & Functional Test,Pressure Switch PS-1-1001-88D Trip Point Found Above Tech Spec Limit.Caused by Setpoint Drift.Switch Recalibr & Tested | /03L-0:on 810116,during High Drywell Pressure Calibr & Functional Test,Pressure Switch PS-1-1001-88D Trip Point Found Above Tech Spec Limit.Caused by Setpoint Drift.Switch Recalibr & Tested | |
| 05000254/LER-1981-001-03, /03L-0:on 810105,while Placing Standby Gas Treatment Sys B in Normal Shutdown Lineup,Discharge Valve MO-1/2-7507B Failed to Close When Operated from Control Room.Caused by Worn Breaker Auxiliary Contacts | /03L-0:on 810105,while Placing Standby Gas Treatment Sys B in Normal Shutdown Lineup,Discharge Valve MO-1/2-7507B Failed to Close When Operated from Control Room.Caused by Worn Breaker Auxiliary Contacts | |
| 05000254/LER-1981-001, Forwards LER 81-001/03L-0 | Forwards LER 81-001/03L-0 | |
| 05000265/LER-1981-001, Forwards LER 81-001/03L-0 | Forwards LER 81-001/03L-0 | |
| 05000265/LER-1981-002, Forwards LER 81-002/03L-0 | Forwards LER 81-002/03L-0 | |
| 05000254/LER-1981-002, Forwards LER 81-002/03L-0 | Forwards LER 81-002/03L-0 | |
| 05000254/LER-1981-002-03, /03L-0:on 810107,Unit 1 Emergency Diesel Generator Tripped & Failed to Restart.Caused by Loose Fuse in 125 Vdc Engine Starting & Fuel Control Circuit & Misalignment of Output Breaker Auxiliary Contacts.Fuse Holder Tightened | /03L-0:on 810107,Unit 1 Emergency Diesel Generator Tripped & Failed to Restart.Caused by Loose Fuse in 125 Vdc Engine Starting & Fuel Control Circuit & Misalignment of Output Breaker Auxiliary Contacts.Fuse Holder Tightened | |
| 05000265/LER-1981-002-03, /03L-0:on 810116,pressure Controller for Electromatic Relief Valve 2-203-3B Tripped in Excess of Tech Specs Limit.Caused by Instrument Drift,Possibly Contributed to by Faulty Microswitch.Switch Replaced | /03L-0:on 810116,pressure Controller for Electromatic Relief Valve 2-203-3B Tripped in Excess of Tech Specs Limit.Caused by Instrument Drift,Possibly Contributed to by Faulty Microswitch.Switch Replaced | |
| 05000254/LER-1981-003, Forwards LER 81-003/03L-0 | Forwards LER 81-003/03L-0 | |
| 05000254/LER-1981-003-03, /03L-0:on 810114,pressure Switch PS-1-1001-90D Tripped High.Caused by Instrument Setpoint Drift.Switch Recalibr | /03L-0:on 810114,pressure Switch PS-1-1001-90D Tripped High.Caused by Instrument Setpoint Drift.Switch Recalibr | |
| 05000265/LER-1981-003-01, /01T-0:on 810202,outboard Steam Isolation Valve MO-2-2301-5 Closed But Would Not Reopen.Caused by Insufficient Torque in Hot Condition to Lift Valve.Valve Limit Switches Adjusted | /01T-0:on 810202,outboard Steam Isolation Valve MO-2-2301-5 Closed But Would Not Reopen.Caused by Insufficient Torque in Hot Condition to Lift Valve.Valve Limit Switches Adjusted | |
| 05000265/LER-1981-003, Forwards LER 81-003/01T-0.Detailed Event Analysis Also Encl | Forwards LER 81-003/01T-0.Detailed Event Analysis Also Encl | |
| 05000265/LER-1981-004-01, /01T-0:on 810220,four Low Condenser Vacuum Switches Tripped in Excess of Tech Specs During Test.Caused by Setpoint Drift.Switches Recalibr | /01T-0:on 810220,four Low Condenser Vacuum Switches Tripped in Excess of Tech Specs During Test.Caused by Setpoint Drift.Switches Recalibr | |
| 05000265/LER-1981-004, Forwards LER 81-004/01T-0 | Forwards LER 81-004/01T-0 | |
| 05000254/LER-1981-004, Forwards LER 81-004/03L-0 | Forwards LER 81-004/03L-0 | |
| 05000254/LER-1981-004-03, /03L-0:on 810116,while Performing Qis 10 Monthly Functional & Quarterly Calibr Test,Reactor Low Level Switch LS-1-263-57A Tripped Above Tech Spec Requirement.Caused by Instrument Setpoint Drift.Switch Recalibr | /03L-0:on 810116,while Performing Qis 10 Monthly Functional & Quarterly Calibr Test,Reactor Low Level Switch LS-1-263-57A Tripped Above Tech Spec Requirement.Caused by Instrument Setpoint Drift.Switch Recalibr | |
| 05000265/LER-1981-005-03, /03L-0:on 810224,switch in DPIS-2-1360-1B Failed to Operate While Performing Surveillance Testing.Caused by Failure of High Side Switch in DPIS-2-1360-1B.Switch Adjusted,Recalibr & Satisfactorily Tested | /03L-0:on 810224,switch in DPIS-2-1360-1B Failed to Operate While Performing Surveillance Testing.Caused by Failure of High Side Switch in DPIS-2-1360-1B.Switch Adjusted,Recalibr & Satisfactorily Tested | |
| 05000265/LER-1981-005, Forwards LER 81-005/03L-0 | Forwards LER 81-005/03L-0 | |
| 05000254/LER-1981-005-01, /01T-0:on 810220,during Testing,Three of Four Condenser Low Vacuum Scram Switches Found Outside Setting Per Tech Spec 3.1-3.Caused by Instrument Setpoint Drift.All Switches Recalibr | /01T-0:on 810220,during Testing,Three of Four Condenser Low Vacuum Scram Switches Found Outside Setting Per Tech Spec 3.1-3.Caused by Instrument Setpoint Drift.All Switches Recalibr | |
| 05000254/LER-1981-005, Forwards LER 81-005/01T-0 | Forwards LER 81-005/01T-0 | |
| 05000265/LER-1981-006, Forwards LER 81-006/03L-0 | Forwards LER 81-006/03L-0 | |
| 05000265/LER-1981-006-03, /03L-0:on 810312,differential Pressure Between Drywell & Suppression Chamber Was Lost.Caused by Isolation of Differential Pressure Sys Due to Short in Electrical Circuit Resulting in Blown Fuse.Fuse Replaced | /03L-0:on 810312,differential Pressure Between Drywell & Suppression Chamber Was Lost.Caused by Isolation of Differential Pressure Sys Due to Short in Electrical Circuit Resulting in Blown Fuse.Fuse Replaced | |
| 05000254/LER-1981-006-03, /03L-0:on 810302,flexible Air Line to Target Rock Main Steam Safety/Relief Valve Found Broken During Routine Insp of Drywell.Caused by Improper Installation of Flexible Air Line.Air Line Replaced W/Longer One | /03L-0:on 810302,flexible Air Line to Target Rock Main Steam Safety/Relief Valve Found Broken During Routine Insp of Drywell.Caused by Improper Installation of Flexible Air Line.Air Line Replaced W/Longer One | |
| 05000254/LER-1981-006, Forwards LER 81-006/03L-0 | Forwards LER 81-006/03L-0 | |
| 05000265/LER-1981-007, Forwards LER 81-007/03L-0 | Forwards LER 81-007/03L-0 | |
| 05000265/LER-1981-007-03, /03L-0:on 810322,MSIV AO-2-203-2A Failed to Initiate half-scram in Reactor Protection Sys Channel B. Caused by Sticking Limit Switch Due to Steam Leak on RCIC Testable Check Valve | /03L-0:on 810322,MSIV AO-2-203-2A Failed to Initiate half-scram in Reactor Protection Sys Channel B. Caused by Sticking Limit Switch Due to Steam Leak on RCIC Testable Check Valve | |
| 05000254/LER-1981-007-03, /03L-0:on 810313,no Position Indication Found on Recirculation Pump 1A Discharge Valve MO-1-202-5A.Caused by Tripped Valve Motor Breaker Due to Several Shorted Conductors in Cable 12507 Leading to Valve Inside Drywell | /03L-0:on 810313,no Position Indication Found on Recirculation Pump 1A Discharge Valve MO-1-202-5A.Caused by Tripped Valve Motor Breaker Due to Several Shorted Conductors in Cable 12507 Leading to Valve Inside Drywell | |
| 05000254/LER-1981-007, Forwards LER 81-007/03L-0 | Forwards LER 81-007/03L-0 | |
| 05000265/LER-1981-008-03, /03L-0:on 810326,two Instrument Cable Risers Found to Have Open Penetrations.Caused by Failure to Seal After Plant Mods.Fire Watch Established & Penetrations Sealed | /03L-0:on 810326,two Instrument Cable Risers Found to Have Open Penetrations.Caused by Failure to Seal After Plant Mods.Fire Watch Established & Penetrations Sealed | |
| 05000265/LER-1981-008, Forwards LER 81-008/03L-0 | Forwards LER 81-008/03L-0 | |
| 05000254/LER-1981-008-03, /03L-0:on 810407,reactor Core Insulation Cooling Sys Received Spurious High Steam Flow Automatic Isolation Signal.Caused by Faulty Micro Switch in DPIS 1-1360-1B. Switch Replaced & Instrument Calibr | /03L-0:on 810407,reactor Core Insulation Cooling Sys Received Spurious High Steam Flow Automatic Isolation Signal.Caused by Faulty Micro Switch in DPIS 1-1360-1B. Switch Replaced & Instrument Calibr | |
| 05000254/LER-1981-008, Forwards LER 81-008/03L-0 | Forwards LER 81-008/03L-0 | |
| 05000254/LER-1981-009-03, /03L-0:on 810407,while 1A RHR Svc Water Pump Being Run for Packing Adjustment,Pump Failed to Meet Flow Requirements of 3,500 Gpm at 198 Psig.Caused by 3 Pieces of Wood in Pump Suction.Packing Sleeve & Bearings Replaced | /03L-0:on 810407,while 1A RHR Svc Water Pump Being Run for Packing Adjustment,Pump Failed to Meet Flow Requirements of 3,500 Gpm at 198 Psig.Caused by 3 Pieces of Wood in Pump Suction.Packing Sleeve & Bearings Replaced | |
| 05000265/LER-1981-009, Forwards LER 81-009/03L-0 | Forwards LER 81-009/03L-0 | |
| 05000254/LER-1981-009, Forwards LER 81-009/03L-0 | Forwards LER 81-009/03L-0 | |
| 05000265/LER-1981-009-03, /03L-0:on 810504,while Performing RHR Containment Cooling Valve Operability Test,Breaker for Valve MO-2-1001-37B Tripped During Attempt to Close Valve.Caused by Internal Corrosion Buildup | /03L-0:on 810504,while Performing RHR Containment Cooling Valve Operability Test,Breaker for Valve MO-2-1001-37B Tripped During Attempt to Close Valve.Caused by Internal Corrosion Buildup | |
| 05000254/LER-1981-010-03, /03L-0:on 810414,valve AO-1-1301-35 Observed Closed Causing Reactor Core Isolation Cooling to Be Inoperable.Caused by Shorted Solenoid Coil on Valve Operator.Solenoid Replaced.Valve Tested Satisfactorily | /03L-0:on 810414,valve AO-1-1301-35 Observed Closed Causing Reactor Core Isolation Cooling to Be Inoperable.Caused by Shorted Solenoid Coil on Valve Operator.Solenoid Replaced.Valve Tested Satisfactorily | |
| 05000254/LER-1981-010, Forwards LER 81-010/03L-0 | Forwards LER 81-010/03L-0 | |
| 05000265/LER-1981-010, Forwards LER 81-010/03L-0 | Forwards LER 81-010/03L-0 | |
| 05000265/LER-1981-010-03, /03L-0:on 810515,diesel Generator Declared Inoperable When Trouble Alarm Received & Room Found Full of Smoke.Caused by Control Power Ground Fault.Ground & Damaged Components Repaired | /03L-0:on 810515,diesel Generator Declared Inoperable When Trouble Alarm Received & Room Found Full of Smoke.Caused by Control Power Ground Fault.Ground & Damaged Components Repaired | |
| 05000265/LER-1981-011, Forwards LER 81-011/03L-0 | Forwards LER 81-011/03L-0 | |
| 05000254/LER-1981-011, Forwards LER 81-011/03L-0 | Forwards LER 81-011/03L-0 | |
| 05000265/LER-1981-011-03, /03L-0:on 810608,during Routine Maint,Diesel Generator 1/2 Was Removed from Svc Prior to Demonstrating Diesel Generator 2 Operability,In Violation of Tech Spec. Caused by Personnel Error.Personnel Reinstructed | /03L-0:on 810608,during Routine Maint,Diesel Generator 1/2 Was Removed from Svc Prior to Demonstrating Diesel Generator 2 Operability,In Violation of Tech Spec. Caused by Personnel Error.Personnel Reinstructed | |
| 05000254/LER-1981-011-03, /03L-0:on 810618,diesel Fire Pump B Out of Svc for More than 7 Days.Caused by Wood Debris Found in Suction Piping.New Strainers Ordered for Both Pumps | /03L-0:on 810618,diesel Fire Pump B Out of Svc for More than 7 Days.Caused by Wood Debris Found in Suction Piping.New Strainers Ordered for Both Pumps | |
| 05000265/LER-1981-012-03, /03L-0:on 810518,during Surveillance Testing,Valve MO-2-1001-7B Failed to Reopen.Caused by Failure of Auxiliary Contacts in Circuit Breakers to Disengage.Valve Manually Opened & Contacts Replaced | /03L-0:on 810518,during Surveillance Testing,Valve MO-2-1001-7B Failed to Reopen.Caused by Failure of Auxiliary Contacts in Circuit Breakers to Disengage.Valve Manually Opened & Contacts Replaced | |
| 05000254/LER-1981-012-03, /03L-0:on 810624,pressure Switch 1-5600-PS-3 Tripped Below Tech Spec Level During Loss of Electrohydraulic Fluid Pressure Calibr & Functional Test. Caused by Instrument Drift.Switch Recalibr & Tested | /03L-0:on 810624,pressure Switch 1-5600-PS-3 Tripped Below Tech Spec Level During Loss of Electrohydraulic Fluid Pressure Calibr & Functional Test. Caused by Instrument Drift.Switch Recalibr & Tested | |
| 05000254/LER-1981-012, Forwards LER 81-012/03L-0 | Forwards LER 81-012/03L-0 | |
| 05000265/LER-1981-012, Forwards LER 81-012/03L-0 | Forwards LER 81-012/03L-0 | |
| 05000254/LER-1981-013, Forwards LER 81-013/03L-0 | Forwards LER 81-013/03L-0 | |
| 05000265/LER-1981-013, Forwards LER 81-013/03L-0 | Forwards LER 81-013/03L-0 | |