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| 05000302/LER-1989-001, :on 890105,discovered Solenoid Operated 3-way Air Valves Undersized W/Respect to Max Operating Pressure Differential Rating.Caused by Installation of Improperly Rated Solenoid Valves.Solenoid Valves Replaced |
- on 890105,discovered Solenoid Operated 3-way Air Valves Undersized W/Respect to Max Operating Pressure Differential Rating.Caused by Installation of Improperly Rated Solenoid Valves.Solenoid Valves Replaced
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| 05000302/LER-1989-002, :on 890101,discovered That Five Valves Could Not Be Tested in Closed Direction Due to Configuration of Check Valves & Piping.Caused by Personnel Error.Mod to Allow Testing of Valves Being Developed |
- on 890101,discovered That Five Valves Could Not Be Tested in Closed Direction Due to Configuration of Check Valves & Piping.Caused by Personnel Error.Mod to Allow Testing of Valves Being Developed
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 05000302/LER-1989-004, :on 890201,numerous Cells in Train a & B Batteries Found to Have Electrolyte Level Above Max Level Allowed by Tech Specs Resulting in Batteries Being Declared Inoperable.Caused by Overfilling of Cells |
- on 890201,numerous Cells in Train a & B Batteries Found to Have Electrolyte Level Above Max Level Allowed by Tech Specs Resulting in Batteries Being Declared Inoperable.Caused by Overfilling of Cells
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| 05000302/LER-1989-005, :on 881110,small Cracks in Masonry Fire Barrier Identified.On 890202,event Determined to Be Design Basis Issue.Caused by Failure of Const Personnel to Build Ref Fire Barriers in Accordance W/All Design Specs |
- on 881110,small Cracks in Masonry Fire Barrier Identified.On 890202,event Determined to Be Design Basis Issue.Caused by Failure of Const Personnel to Build Ref Fire Barriers in Accordance W/All Design Specs
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| 05000302/LER-1989-006, :on 890213,plant Operating Outside Design Basis Due to Potential Failure of Circuit Breakers Supplying Power to Two Decay Heat Closed Cycle Cooling Pumps.Caused by Lack of Spring.Part 21 Related |
- on 890213,plant Operating Outside Design Basis Due to Potential Failure of Circuit Breakers Supplying Power to Two Decay Heat Closed Cycle Cooling Pumps.Caused by Lack of Spring.Part 21 Related
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| 05000302/LER-1989-007, :on 890221,determined That Unit Operated Outside Design Basis W/Portion of Chilled Water Sys Not Seismic Class 1.Caused by Design Error During Plant Const. Plant Ventilation Procedure Revised |
- on 890221,determined That Unit Operated Outside Design Basis W/Portion of Chilled Water Sys Not Seismic Class 1.Caused by Design Error During Plant Const. Plant Ventilation Procedure Revised
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| 05000302/LER-1989-008, :on 890222,determination Made That Plant Being Operated Outside Design Bases.Caused by Personnel Error. Isolation Valve for Each Steam Trap Reopened.Revised Dose Analysis & Results Will Be Incorporated in Rev to FSAR |
- on 890222,determination Made That Plant Being Operated Outside Design Bases.Caused by Personnel Error. Isolation Valve for Each Steam Trap Reopened.Revised Dose Analysis & Results Will Be Incorporated in Rev to FSAR
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| 05000302/LER-1989-008-01, Forwards LER 89-008-01 & Proposed Draft FSAR Change. Reanalysis in LER Initiated to Evaluate Consequences of Operation W/Steam Drain Trap Isolation Valves Open for All Events.Revised FSAR Pages Will Be Incorporated in Rev 12 | Forwards LER 89-008-01 & Proposed Draft FSAR Change. Reanalysis in LER Initiated to Evaluate Consequences of Operation W/Steam Drain Trap Isolation Valves Open for All Events.Revised FSAR Pages Will Be Incorporated in Rev 12 | |
| 05000302/LER-1989-009, Submits Justification for Restart of Plant as Committed to in LER 89-009.Based on Test & Insp Data,Util Has Determined That Continued Operation W/Existing DHR Pumps Will Not Pose Unresolved Safety Concerns | Submits Justification for Restart of Plant as Committed to in LER 89-009.Based on Test & Insp Data,Util Has Determined That Continued Operation W/Existing DHR Pumps Will Not Pose Unresolved Safety Concerns | |
| 05000302/LER-1989-010, :on 890331,determined That Electrical Cable Splices Associated W/One of Main Feedwater Pump Suction Valves Wrongly Installed.Caused by Personnel Error.Procedure Governing Splice Installation Revised |
- on 890331,determined That Electrical Cable Splices Associated W/One of Main Feedwater Pump Suction Valves Wrongly Installed.Caused by Personnel Error.Procedure Governing Splice Installation Revised
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| 05000302/LER-1989-011, :on 890406,incorrectness of FSAR Statement Re Failure or Rupture of Circulating Water Sys Expansion Joint Affecting safety-related Equipment Confirmed.Caused by Personnel Error.Evaluation Underway |
- on 890406,incorrectness of FSAR Statement Re Failure or Rupture of Circulating Water Sys Expansion Joint Affecting safety-related Equipment Confirmed.Caused by Personnel Error.Evaluation Underway
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| 05000302/LER-1989-012, :on 890407,engineers Determined Eight Solenoid Valves Equipped W/Coils Rated for Temp Below Design Requirements.Caused by Installation of Improperly Rated Coils.Solenoid Coils Replaced W/Required Coils |
- on 890407,engineers Determined Eight Solenoid Valves Equipped W/Coils Rated for Temp Below Design Requirements.Caused by Installation of Improperly Rated Coils.Solenoid Coils Replaced W/Required Coils
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| 05000302/LER-1989-013, :on 890409,ESF Actuation Occurred.Caused by Degraded Voltage on Engineered Safeguards Buses Due to Overloading on Startup Transformer.Cause of Overloading Under Investigation |
- on 890409,ESF Actuation Occurred.Caused by Degraded Voltage on Engineered Safeguards Buses Due to Overloading on Startup Transformer.Cause of Overloading Under Investigation
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| 05000302/LER-1989-013-01, Corrected LER 89-013-01:on 890409,when Time Delay Satisfied & Voltage Had Not Recovered,Emergency Diesel Generator Start Signal Was Initiated.Caused by Degraded Voltage on Engineered Safeguard 4,160 Volt Buses | Corrected LER 89-013-01:on 890409,when Time Delay Satisfied & Voltage Had Not Recovered,Emergency Diesel Generator Start Signal Was Initiated.Caused by Degraded Voltage on Engineered Safeguard 4,160 Volt Buses | |
| 05000302/LER-1989-014, :on 890413,alarm/automatic Actuation Setpoint for Operating Range Improperly Set High.Caused by Personnel Error.Monitor Setpoints Immediately Reset & Check Made of Other Monitor Setpoints & Verified |
- on 890413,alarm/automatic Actuation Setpoint for Operating Range Improperly Set High.Caused by Personnel Error.Monitor Setpoints Immediately Reset & Check Made of Other Monitor Setpoints & Verified
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| 05000302/LER-1989-015, :on 890418,determined That Solenoid Operated 3- Way Air Valve MUV-253-SV Not Seismically Supported Per Plant Design Bases for Seismic Class I Sys.Caused by Improper Installation.Valve Support Modified |
- on 890418,determined That Solenoid Operated 3- Way Air Valve MUV-253-SV Not Seismically Supported Per Plant Design Bases for Seismic Class I Sys.Caused by Improper Installation.Valve Support Modified
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| 05000302/LER-1989-016-03, Forwards Updated LER 89-016-03 Re Environ Qualification Walk Down Conducted Outside of Containment,Per 891023 Commitment. Outside Containment Walk Down Will Not Be Completed Until Shutdown for Refuel 7 | Forwards Updated LER 89-016-03 Re Environ Qualification Walk Down Conducted Outside of Containment,Per 891023 Commitment. Outside Containment Walk Down Will Not Be Completed Until Shutdown for Refuel 7 | |
| 05000302/LER-1989-016, :on 890426,deficiencies Re Environ Qualification of Containment Isolation Valves Found.Caused by Deficiencies in Development & Implementation of Environ Program.Review of Past Activities Performed |
- on 890426,deficiencies Re Environ Qualification of Containment Isolation Valves Found.Caused by Deficiencies in Development & Implementation of Environ Program.Review of Past Activities Performed
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| 05000302/LER-1989-017, :on 890501,emergency Diesel Generator Started as Result from Inadvertent Operation of Manual Air Start Valve.Caused by Inadequate pre-job Briefing.Guards Placed Over Manual Air Start During Painting |
- on 890501,emergency Diesel Generator Started as Result from Inadvertent Operation of Manual Air Start Valve.Caused by Inadequate pre-job Briefing.Guards Placed Over Manual Air Start During Painting
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000302/LER-1989-018, :on 890529,temp of Piping at Containment Penetration 424 Above Design Temp Discovered.Caused by Operating Instructions Not Adequately Reviewed.Evaluation of Emergency Feedwater Piping Completed |
- on 890529,temp of Piping at Containment Penetration 424 Above Design Temp Discovered.Caused by Operating Instructions Not Adequately Reviewed.Evaluation of Emergency Feedwater Piping Completed
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| 05000302/LER-1989-019, :on 890608,reactor Protection Sys Actuation Received & No Rod Motion Occurred When CRD Motors Energized to Prevent Moisture Buildup.Caused by Planned Maint Work on RCS Loop B Hot Leg Temp Sensors |
- on 890608,reactor Protection Sys Actuation Received & No Rod Motion Occurred When CRD Motors Energized to Prevent Moisture Buildup.Caused by Planned Maint Work on RCS Loop B Hot Leg Temp Sensors
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| 05000302/LER-1989-020, :on 890614,plant Operator Inadvertently Contacted Manual Shunt Trip Lever for CRD Ac Breaker & Tripped Reactor.Caused by Personnel Error.Protective Device Installed Over Manual Shunt Trip Levers |
- on 890614,plant Operator Inadvertently Contacted Manual Shunt Trip Lever for CRD Ac Breaker & Tripped Reactor.Caused by Personnel Error.Protective Device Installed Over Manual Shunt Trip Levers
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| 05000302/LER-1989-021, :on 890614,during Surveillance Test,Reactor Protection Sys Actuation Received.Cause Unknown.Monitoring Program Instituted to Look at Switch After Any Reactor Protection Sys Actuation |
- on 890614,during Surveillance Test,Reactor Protection Sys Actuation Received.Cause Unknown.Monitoring Program Instituted to Look at Switch After Any Reactor Protection Sys Actuation
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| 05000302/LER-1989-022, :on 890614,during Engineered Safeguards Surveillance,Observed Indications That Both Main Feedwater Pumps Had Tripped.Cause Not Conclusively Determined. Precaution Will Be Added to Procedure |
- on 890614,during Engineered Safeguards Surveillance,Observed Indications That Both Main Feedwater Pumps Had Tripped.Cause Not Conclusively Determined. Precaution Will Be Added to Procedure
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| 05000302/LER-1989-023, :on 890616,startup Transformer Became de-energized Which Resulted in Reactor/Turbine Trip.Caused by Combination of Fault Detector Relay Failure & Personnel Error.Corrective Action Being Reviewed |
- on 890616,startup Transformer Became de-energized Which Resulted in Reactor/Turbine Trip.Caused by Combination of Fault Detector Relay Failure & Personnel Error.Corrective Action Being Reviewed
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| 05000302/LER-1989-024, :on 890621 & 30,gases in Electrolyte Caused Both Station Battery Trains to Be Inoperable.Caused by High Electrolyte Levels.Electrolyte Levels in Batteries Lowered. Procedural Guidance on Electrolyte Revised |
- on 890621 & 30,gases in Electrolyte Caused Both Station Battery Trains to Be Inoperable.Caused by High Electrolyte Levels.Electrolyte Levels in Batteries Lowered. Procedural Guidance on Electrolyte Revised
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| 05000302/LER-1989-025, :on 890629,plant Separated from Normal Offsite Power Source.Electrical Storm Was in Progress.Caused by Electrical Fault in 230 Kv Switchyard.Damaged Current Transformer Replaced |
- on 890629,plant Separated from Normal Offsite Power Source.Electrical Storm Was in Progress.Caused by Electrical Fault in 230 Kv Switchyard.Damaged Current Transformer Replaced
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| 05000302/LER-1989-026, :on 890629,plant Shutdown Initiated Due to Inability to Repair Emergency Diesel Generator 1B in Time Remaining in Action Statement.Cause of Inadequate Crankcase Vacuum Undetermined.Oil Separator Cleaned |
- on 890629,plant Shutdown Initiated Due to Inability to Repair Emergency Diesel Generator 1B in Time Remaining in Action Statement.Cause of Inadequate Crankcase Vacuum Undetermined.Oil Separator Cleaned
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| 05000302/LER-1989-027, :on 890713,discovered That Containment Hydrogen Monitor Monthly Functional Tests Overdue on Both Trains. Caused by Personnel Error on Part of Depts Responsible for Writing & Issuing New Surveillance Procedure |
- on 890713,discovered That Containment Hydrogen Monitor Monthly Functional Tests Overdue on Both Trains. Caused by Personnel Error on Part of Depts Responsible for Writing & Issuing New Surveillance Procedure
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| 05000302/LER-1989-028, :on 890725,personnel Error During Development of Rev to Surveillance Procedure Resulted in Containment Integrity Valves Not Being Properly Surveilled.Affected Valves Verified Closed & Procedure Revised |
- on 890725,personnel Error During Development of Rev to Surveillance Procedure Resulted in Containment Integrity Valves Not Being Properly Surveilled.Affected Valves Verified Closed & Procedure Revised
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| 05000302/LER-1989-029, :on 890812,nonlicensed Assistant Nuclear Operator Shut Down Normal Duty Vacuum Pump for Containment Astmosphere Radioactivity Monitor & Did Not Start Backup Vacuum Pump.Caused by Personnel Error |
- on 890812,nonlicensed Assistant Nuclear Operator Shut Down Normal Duty Vacuum Pump for Containment Astmosphere Radioactivity Monitor & Did Not Start Backup Vacuum Pump.Caused by Personnel Error
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| 05000302/LER-1989-030, :on 890826 Plant Shut Down Following 890824 Declaration of Pump RWP-2B Inoperability.On 890902 Subj Pump Failed Again When Tested After Silt Removal.Caused by Wrong Impeller in Pump.Subj Impeller Sent for Repair |
- on 890826 Plant Shut Down Following 890824 Declaration of Pump RWP-2B Inoperability.On 890902 Subj Pump Failed Again When Tested After Silt Removal.Caused by Wrong Impeller in Pump.Subj Impeller Sent for Repair
| 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown |
| 05000302/LER-1989-031, :on 890828,480V Engineered Safeguards Transformer a Faulted Causing Dh Closed Cycle Cooling Pump a to de-energize.Cause Not Determined.Transformer Replaced |
- on 890828,480V Engineered Safeguards Transformer a Faulted Causing Dh Closed Cycle Cooling Pump a to de-energize.Cause Not Determined.Transformer Replaced
| 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 05000302/LER-1989-032, :on 890831,determined That Station Battery B Was Inoperable Due to Inadequate Testing Load Profile.Caused by Design Engineering Deficiencies.Temporary Battery Installed to Power TBP-10 |
- on 890831,determined That Station Battery B Was Inoperable Due to Inadequate Testing Load Profile.Caused by Design Engineering Deficiencies.Temporary Battery Installed to Power TBP-10
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| 05000302/LER-1989-033, :on 890908,second Level Undervoltage Relay Sys Setpoint for Engineered Safeguards Buses Not Conservative & Led to Operation Outside Plant Design Basis.Caused by Personnel Error.Setpoint Changed |
- on 890908,second Level Undervoltage Relay Sys Setpoint for Engineered Safeguards Buses Not Conservative & Led to Operation Outside Plant Design Basis.Caused by Personnel Error.Setpoint Changed
| 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition |
| 05000302/LER-1989-034, :on 890926,two Conditions Determined to Be Outside Plant Design Basis Re Solenoid Control Valves.Caused by Cognitive Personnel Error.Test Solenoid Valve Circuits Provided W/Isolation Fuses |
- on 890926,two Conditions Determined to Be Outside Plant Design Basis Re Solenoid Control Valves.Caused by Cognitive Personnel Error.Test Solenoid Valve Circuits Provided W/Isolation Fuses
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| 05000302/LER-1989-035, :on 890906,determined Safety Related Components Were Exposed to Voltages in Excess of Mfg Stated Voltage Ratings Due to Inadequate Control of Design Process.Replaced Inoperable Items W/High Voltage Components |
- on 890906,determined Safety Related Components Were Exposed to Voltages in Excess of Mfg Stated Voltage Ratings Due to Inadequate Control of Design Process.Replaced Inoperable Items W/High Voltage Components
| 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition |
| 05000302/LER-1989-036, :on 891018,determined That Plant Operating Outside Design Basis Since Borated Water Storage Tank Level Transmitters Not Seismically Qualified.Caused by Personnel Error.Unqualified Transmitters Replaced |
- on 891018,determined That Plant Operating Outside Design Basis Since Borated Water Storage Tank Level Transmitters Not Seismically Qualified.Caused by Personnel Error.Unqualified Transmitters Replaced
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| 05000302/LER-1989-037, :on 891026,determined That Instrumentation Used to Balance HPI Flow Through Four Injection Lines During Small Break LOCA Inadequate.Caused by Inadequate Review of B&W Guidelines.Flow Instrument Installed |
- on 891026,determined That Instrumentation Used to Balance HPI Flow Through Four Injection Lines During Small Break LOCA Inadequate.Caused by Inadequate Review of B&W Guidelines.Flow Instrument Installed
| 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(1) |
| 05000302/LER-1989-038, :on 891029,util Engineers Discovered That Administrative Controls Not in Place for Three Makeup & Purification Sys Valves.Caused by Personnel Error.Plant Procedures Revised |
- on 891029,util Engineers Discovered That Administrative Controls Not in Place for Three Makeup & Purification Sys Valves.Caused by Personnel Error.Plant Procedures Revised
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| 05000302/LER-1989-039, :on 891107,determined That Control Circuits for Two Makeup Valves Did Not Meet Separation Criteria of 10CFR50 App R.Caused by Cognitive Personnel Error.Roving Fire Watch Patrol Confirmed in Effect |
- on 891107,determined That Control Circuits for Two Makeup Valves Did Not Meet Separation Criteria of 10CFR50 App R.Caused by Cognitive Personnel Error.Roving Fire Watch Patrol Confirmed in Effect
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| 05000302/LER-1989-040, :on 891208,emergency Diesel Generators a & B Actuated Due to Degraded Voltage When Condensate Pump Started.Operator Guidelines & Procedures for Starting Condensate Pumps Being Revised |
- on 891208,emergency Diesel Generators a & B Actuated Due to Degraded Voltage When Condensate Pump Started.Operator Guidelines & Procedures for Starting Condensate Pumps Being Revised
| 10 CFR 50.73(a)(2)(iv), System Actuation |
| 05000302/LER-1989-041, :on 891208,partial,simultaneous Withdrawal of Two Control Rod Safety Groups Occurred & Safety Group 3 Control Transferred to Auxiliary Power Supply.Cause Undetermined.Select Relays Replaced |
- on 891208,partial,simultaneous Withdrawal of Two Control Rod Safety Groups Occurred & Safety Group 3 Control Transferred to Auxiliary Power Supply.Cause Undetermined.Select Relays Replaced
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