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| 05000320/LER-1983-001-01, /01P:on 830104,once Through Steam Generator a Pressure Transmitters SP-6A-PT1/2 Were Inoperable,Placing Unit in Action Statements of Tech Specs Limiting Condition for Operation 3.3.3.5 | /01P:on 830104,once Through Steam Generator a Pressure Transmitters SP-6A-PT1/2 Were Inoperable,Placing Unit in Action Statements of Tech Specs Limiting Condition for Operation 3.3.3.5 | |
| 05000289/LER-1983-001, Forwards LER 83-001/03L-0 | Forwards LER 83-001/03L-0 | |
| 05000289/LER-1983-002-03, /03L-0:on 830201,1A Es 480-volt Motor Control Ctr tripped,de-energizing Associated Circuits & Rendering Radiation Monitors RM-A4,A6 & A9 Inoperable.Caused by Failure of Conductor Insulation in Cable CG-2 | /03L-0:on 830201,1A Es 480-volt Motor Control Ctr tripped,de-energizing Associated Circuits & Rendering Radiation Monitors RM-A4,A6 & A9 Inoperable.Caused by Failure of Conductor Insulation in Cable CG-2 | |
| 05000289/LER-1983-002, Forwards LER 83-002/03L-0 | Forwards LER 83-002/03L-0 | |
| 05000320/LER-1983-002-01, /01P:on 830114,once Through Steam Generator B Level Indication Determined Out of Svc,Placing Unit in Action Statement of Tech Spec Limiting Condition for Operation 3.3.3.6 | /01P:on 830114,once Through Steam Generator B Level Indication Determined Out of Svc,Placing Unit in Action Statement of Tech Spec Limiting Condition for Operation 3.3.3.6 | |
| 05000289/LER-1983-003-01, /01T-0:on 830211,pilot Valve Disc Found Stuck Open & Main Valve Stuck Closed.Porv Removed for Special Insp to Ensure That Corrosion Found in Previously Installed PORV Had Not Occurred | /01T-0:on 830211,pilot Valve Disc Found Stuck Open & Main Valve Stuck Closed.Porv Removed for Special Insp to Ensure That Corrosion Found in Previously Installed PORV Had Not Occurred | |
| 05000289/LER-1983-004-03, /03L-0:on 830313,condensation Found in Waste Gas Sys Gas Analyzer While Investigating High Oxygen Alarm. Caused by Failure of Drain Pot Valve to Open Due to Corrosion.Valve Replaced | /03L-0:on 830313,condensation Found in Waste Gas Sys Gas Analyzer While Investigating High Oxygen Alarm. Caused by Failure of Drain Pot Valve to Open Due to Corrosion.Valve Replaced | |
| 05000289/LER-1983-005, Forwards LER 83-005/01T-0 | Forwards LER 83-005/01T-0 | |
| 05000289/LER-1983-005-01, /01T-0:on 830321,manual Sampling of Waste Gas Sys Revealed Concentration of 9%,exceeding 2% Tech Spec Limit. Caused by Maint Activities.Nitrogen Purge Initiated & Concentration Reduced in 9.5 H.Tech Spec Change Submitted | /01T-0:on 830321,manual Sampling of Waste Gas Sys Revealed Concentration of 9%,exceeding 2% Tech Spec Limit. Caused by Maint Activities.Nitrogen Purge Initiated & Concentration Reduced in 9.5 H.Tech Spec Change Submitted | |
| 05000289/LER-1983-006, Forwards LER 83-006/03L-0 | Forwards LER 83-006/03L-0 | |
| 05000289/LER-1983-006-03, /03L-0:on 830320,no Flow Existed Through Hydrogen & Oxygen Rotameters of Waste Gas Sys Analyzer.Caused by Dirt Blockage in Regulator & Flow Setting.Pump Discharge Pressure Regulator Setting Raised | /03L-0:on 830320,no Flow Existed Through Hydrogen & Oxygen Rotameters of Waste Gas Sys Analyzer.Caused by Dirt Blockage in Regulator & Flow Setting.Pump Discharge Pressure Regulator Setting Raised | |
| 05000289/LER-1983-007, Forwards LER 83-007/03L-0 | Forwards LER 83-007/03L-0 | |
| 05000289/LER-1983-007-03, /03L-0:on 830325,automatic Termination & Alarm Failed to Occur When Dilution Flow Fell Below Min Setpoint During Liquid Effluent Release.Caused by Sticking of Trip Interlock Pneumatic Relay.Procedures Modified | /03L-0:on 830325,automatic Termination & Alarm Failed to Occur When Dilution Flow Fell Below Min Setpoint During Liquid Effluent Release.Caused by Sticking of Trip Interlock Pneumatic Relay.Procedures Modified | |
| 05000289/LER-1983-008-01, /01T-0:on 830329,high Oxygen Concentration in Miscellaneous Waste Storage Tank WDL-T-12 Observed.Caused by 830328 Clearance of Tank Outlet Pipe to Blow Air Free. Personnel Cautioned on Effects of Using Air to Unclog Lines | /01T-0:on 830329,high Oxygen Concentration in Miscellaneous Waste Storage Tank WDL-T-12 Observed.Caused by 830328 Clearance of Tank Outlet Pipe to Blow Air Free. Personnel Cautioned on Effects of Using Air to Unclog Lines | |
| 05000289/LER-1983-008, Forwards LER 83-008/01T-0 | Forwards LER 83-008/01T-0 | |
| 05000289/LER-1983-009, Forwards LER 83-009/03L-0 | Forwards LER 83-009/03L-0 | |
| 05000289/LER-1983-009-03, /03L-0:on 830330,during Surveillance/Calibr of Waste Gas Sys,Hays Gas Analyzer,Oxygen Meter Failed to Respond to Calibr Gas.Cause Unknown.Maint Checks Performed & Circuit Components Cleaned | /03L-0:on 830330,during Surveillance/Calibr of Waste Gas Sys,Hays Gas Analyzer,Oxygen Meter Failed to Respond to Calibr Gas.Cause Unknown.Maint Checks Performed & Circuit Components Cleaned | |
| 05000289/LER-1983-010, Forwards LER 83-010/03L-0 | Forwards LER 83-010/03L-0 | |
| 05000289/LER-1983-010-03, /03L-0:on 830321,waste Gas Sys Hays Gas Analyzer Alarm Indicated Incorrect Concentration of Oxygen.Caused by Dirty Amplifier Low Channel Gain Potentiometer & Switch Contacts.Components Cleaned | /03L-0:on 830321,waste Gas Sys Hays Gas Analyzer Alarm Indicated Incorrect Concentration of Oxygen.Caused by Dirty Amplifier Low Channel Gain Potentiometer & Switch Contacts.Components Cleaned | |
| 05000289/LER-1983-011, Forwards LER 83-011/01T-0 | Forwards LER 83-011/01T-0 | |
| 05000289/LER-1983-011-01, /01T-0:on 830415,while in long-term Shutdown DH-P1A Shaft Bearings Failed,Making Pump Inoperable.Caused by Improperly Authorized Mod to Component & Inadequate Mod Set Up.Pump Repaired.Maint Job Tickets Reviewed | /01T-0:on 830415,while in long-term Shutdown DH-P1A Shaft Bearings Failed,Making Pump Inoperable.Caused by Improperly Authorized Mod to Component & Inadequate Mod Set Up.Pump Repaired.Maint Job Tickets Reviewed | |
| 05000289/LER-1983-012-03, /03L-0:on 830406,while Performing Functional Testing of Hydraulic Snubbers,Snubber MS-209 Failed to Lock in Tension Direction.Caused by Damaged Piston Seal Ring. Snubber Overhauled & Tested Satisfactorily | /03L-0:on 830406,while Performing Functional Testing of Hydraulic Snubbers,Snubber MS-209 Failed to Lock in Tension Direction.Caused by Damaged Piston Seal Ring. Snubber Overhauled & Tested Satisfactorily | |
| 05000289/LER-1983-012, Forwards LER 83-012/03L-0 | Forwards LER 83-012/03L-0 | |
| 05000289/LER-1983-013-03, /03L-0:on 830419,while in Cold Shutdown,Relay Room Carbon Dioxide Fire Protection Sys Pressure Fell Below Tech Specs.Caused by Seat Leakage Through Bleeder Valve.Fire Watch Posted.New Valve Installed | /03L-0:on 830419,while in Cold Shutdown,Relay Room Carbon Dioxide Fire Protection Sys Pressure Fell Below Tech Specs.Caused by Seat Leakage Through Bleeder Valve.Fire Watch Posted.New Valve Installed | |
| 05000289/LER-1983-014-03, /03L-0:on 830518,while in long-term Cold Shutdown, Liquid Radioactive Effluent Monitor RM-L6 Found Inoperable. RM-L6 Functioned Properly After Monitor Switch Turned Off & On.Rms Recorder Charts Will Be Monitored | /03L-0:on 830518,while in long-term Cold Shutdown, Liquid Radioactive Effluent Monitor RM-L6 Found Inoperable. RM-L6 Functioned Properly After Monitor Switch Turned Off & On.Rms Recorder Charts Will Be Monitored | |
| 05000320/LER-1983-014-03, Air Intake Tunnel Halon Sys Actuated,Causing Actuation of Deluge Sys & Trip of Auxiliary & Fuel Handling Bldgs Supply & Exhaust Fans.Caused by Short in Actuation Leads.Sys Repaired | Air Intake Tunnel Halon Sys Actuated,Causing Actuation of Deluge Sys & Trip of Auxiliary & Fuel Handling Bldgs Supply & Exhaust Fans.Caused by Short in Actuation Leads.Sys Repaired | |
| 05000289/LER-1983-015-01, /01T-0:on 830611,oxygen Concentration in Waste Gas Sys Remained in Excess of 2% for Greater than 1 H.Caused by Failure to Recognize Maint Activities Affected When Oxygen Introduced in Waste Gas Sys | /01T-0:on 830611,oxygen Concentration in Waste Gas Sys Remained in Excess of 2% for Greater than 1 H.Caused by Failure to Recognize Maint Activities Affected When Oxygen Introduced in Waste Gas Sys | |
| 05000289/LER-1983-015, :on 830611,oxygen Concentration in Miscellaneous Waste Storage Tank Gas Space Exceeded Tech Spec Limits. Nitrogen Used to Purge Oxygen from Sys & Reduce Concentration |
- on 830611,oxygen Concentration in Miscellaneous Waste Storage Tank Gas Space Exceeded Tech Spec Limits. Nitrogen Used to Purge Oxygen from Sys & Reduce Concentration
| |
| 05000320/LER-1983-015-03, /03L-0:on 830527,one Halon Bottle Found W/Low Pressure & Low Weight During Surveillance of Air Intake Tunnel Halon Sys.Caused by Development of Leak in Bottle or Fittings.Bottle Replaced | /03L-0:on 830527,one Halon Bottle Found W/Low Pressure & Low Weight During Surveillance of Air Intake Tunnel Halon Sys.Caused by Development of Leak in Bottle or Fittings.Bottle Replaced | |
| 05000289/LER-1983-016-03, /03L-0:on 830703,liquid Effluent Radiation Monitor RM-L7 Had No Sample Flow Through Monitor.Caused by Mechanical Seizure.Pump & Motor Replaced | /03L-0:on 830703,liquid Effluent Radiation Monitor RM-L7 Had No Sample Flow Through Monitor.Caused by Mechanical Seizure.Pump & Motor Replaced | |
| 05000320/LER-1983-017-03, /03L-0:on 830527,reactor Bldg Water Level Instrumentation Indication Unchanged All Wk Despite Addition of 24,000 Gallons of Water.Caused by Improper Seating of Level Instrument Equalizing Valve | /03L-0:on 830527,reactor Bldg Water Level Instrumentation Indication Unchanged All Wk Despite Addition of 24,000 Gallons of Water.Caused by Improper Seating of Level Instrument Equalizing Valve | |
| 05000289/LER-1983-017-03, /03L-0:on 830728,outbuilding Auxiliary Operator Discovered Lack of Sample Flow Through Station Liquid Effluent Monitor RM-L7.Caused by Valve Closed or Clogged W/ Foreign Matl.Valve Adjusted | /03L-0:on 830728,outbuilding Auxiliary Operator Discovered Lack of Sample Flow Through Station Liquid Effluent Monitor RM-L7.Caused by Valve Closed or Clogged W/ Foreign Matl.Valve Adjusted | |
| 05000289/LER-1983-018-01, /01T-0:on 830803,two Small Bore Snubbers on RCS Hot Leg Vent Piping Not Surveilled Per Tech Specs.Caused by Omission of Snubbers from safety-related Snubber List. Snubbers Overhauled & Added to Tech Spec List | /01T-0:on 830803,two Small Bore Snubbers on RCS Hot Leg Vent Piping Not Surveilled Per Tech Specs.Caused by Omission of Snubbers from safety-related Snubber List. Snubbers Overhauled & Added to Tech Spec List | |
| 05000289/LER-1983-019-03, /03L-0:on 830823,flow to Condenser Exhaust Monitor RM-A5 Shut Off When Valve Inadvertently Closed.Caused by Personnel Error.Flow Restored.Responsible Individuals Instructed | /03L-0:on 830823,flow to Condenser Exhaust Monitor RM-A5 Shut Off When Valve Inadvertently Closed.Caused by Personnel Error.Flow Restored.Responsible Individuals Instructed | |
| 05000289/LER-1983-020-03, /03L-0:on 830826,while Taking Once Per Shift Readings,Operator Found No Sample Flow to Condenser Exhaust Monitor.Caused by Moisture Condensing in Monitor Sample Line.Flow Increased to Blow Out Moisture | /03L-0:on 830826,while Taking Once Per Shift Readings,Operator Found No Sample Flow to Condenser Exhaust Monitor.Caused by Moisture Condensing in Monitor Sample Line.Flow Increased to Blow Out Moisture | |
| 05000320/LER-1983-021-03, /03L-0:on 830616,while Performing 12-month Surveillance of Firewall-50 Fire Barrier Seals,Nine Seals Found to Be Nonfunctional.Caused by Dehydration Cracking,No Conduit Seals,Open Pull Boxes & Deformation | /03L-0:on 830616,while Performing 12-month Surveillance of Firewall-50 Fire Barrier Seals,Nine Seals Found to Be Nonfunctional.Caused by Dehydration Cracking,No Conduit Seals,Open Pull Boxes & Deformation | |
| 05000289/LER-1983-021-03, /03L-0:on 830825,outbuildings Auxiliary Operator Observed No Flow Rate on Outlet Valve RM-L-7.Caused by Corrosion Clogging Valve.Piping Will Be Replaced W/Stainless Steel to Prevent Recurrence | /03L-0:on 830825,outbuildings Auxiliary Operator Observed No Flow Rate on Outlet Valve RM-L-7.Caused by Corrosion Clogging Valve.Piping Will Be Replaced W/Stainless Steel to Prevent Recurrence | |
| 05000289/LER-1983-022-01, /01T-0:on 830827,gas Analyzer Alarm Received Indicating High Hydrogen During Pump Heatup to Hot Shutdown Conditions.Caused by Personnel Error.Plant Incident Rept Reviewed by All Personnel | /01T-0:on 830827,gas Analyzer Alarm Received Indicating High Hydrogen During Pump Heatup to Hot Shutdown Conditions.Caused by Personnel Error.Plant Incident Rept Reviewed by All Personnel | |
| 05000289/LER-1983-023-99, /99X-0:on 830827,while Locally Checking Control Rod Drive Breakers Prior to Closing Disconnect Switches,One Breaker Indicated Closed by Mechanical Indicator.Caused by Worn Breaker Operating Mechanism | /99X-0:on 830827,while Locally Checking Control Rod Drive Breakers Prior to Closing Disconnect Switches,One Breaker Indicated Closed by Mechanical Indicator.Caused by Worn Breaker Operating Mechanism | |
| 05000289/LER-1983-024-99, /99X-0:on 830827,while in Cold Shutdown Condition, Engineered Safeguards Actuation Sys Actuation Relay 63Z1B/ RB2A Coil Found Smoking.Probably Caused by End of Coil Life or Incomplete pull-in of Armature | /99X-0:on 830827,while in Cold Shutdown Condition, Engineered Safeguards Actuation Sys Actuation Relay 63Z1B/ RB2A Coil Found Smoking.Probably Caused by End of Coil Life or Incomplete pull-in of Armature | |
| 05000289/LER-1983-025-01, /01T-0:on 830915,during once-through Steam Generator testing,3/4-inch Vent Valve Which Serves as Containment Isolation Valve Found Open.Caused by Personnel Error.Operators Counseled | /01T-0:on 830915,during once-through Steam Generator testing,3/4-inch Vent Valve Which Serves as Containment Isolation Valve Found Open.Caused by Personnel Error.Operators Counseled | |
| 05000289/LER-1983-026-01, /01T-0:on 830919,while Testing Main Steam Safety Valves,All Valves Except One Lifted Above Allowed Lift Setpoint Tolerance of +1%.Caused by Personnel Error Which Resulted in Defective Procedure | /01T-0:on 830919,while Testing Main Steam Safety Valves,All Valves Except One Lifted Above Allowed Lift Setpoint Tolerance of +1%.Caused by Personnel Error Which Resulted in Defective Procedure | |
| 05000289/LER-1983-027-03, /03L-0:on 830916,during Performance of Emergency Sequence & Power Transfer test,make-up Pump MU-P-1C Tripped After 4160-volt IE Bus Loaded on Diesel Generator.Caused by Variable Time Delay.Relay Replaced | /03L-0:on 830916,during Performance of Emergency Sequence & Power Transfer test,make-up Pump MU-P-1C Tripped After 4160-volt IE Bus Loaded on Diesel Generator.Caused by Variable Time Delay.Relay Replaced | |
| 05000289/LER-1983-028-01, /01T-0:on 830920,manual Inside Containment Isolation Valve IA-V20 in Instrument Air Sys Found Open. Caused by Threaded Stem Bushing Backed Partially Out of Yoke & Paint Buildup on Stem.Parts Replaced | /01T-0:on 830920,manual Inside Containment Isolation Valve IA-V20 in Instrument Air Sys Found Open. Caused by Threaded Stem Bushing Backed Partially Out of Yoke & Paint Buildup on Stem.Parts Replaced | |
| 05000289/LER-1983-029-03, /03L-0:on 830917,while in Hot Shutdown for Noncritical Steam Generator Testing,Snubber NSE-18 Found Unpinned W/Load Stud Missing.Caused by Inadequate Procedure Which Should Have Required Loctite | /03L-0:on 830917,while in Hot Shutdown for Noncritical Steam Generator Testing,Snubber NSE-18 Found Unpinned W/Load Stud Missing.Caused by Inadequate Procedure Which Should Have Required Loctite | |
| 05000289/LER-1983-030-03, /03L-0:on 830911,radiation Monitor (RM)-A5 Experienced Intermittent Electrical Fluctuations Causing Readout Module to Indicate High Count Rate.Caused by Low Energy Pulses of noise.RM-A5 Detector Replaced | /03L-0:on 830911,radiation Monitor (RM)-A5 Experienced Intermittent Electrical Fluctuations Causing Readout Module to Indicate High Count Rate.Caused by Low Energy Pulses of noise.RM-A5 Detector Replaced | |
| 05000289/LER-1983-031-03, /03L-0:on 830930,discovered That Alternate Pumps MU-P-1B,NR-P-1B & NS-P-1B Not Tested to Verify Operability on Engineered Safeguards Start Signal.Caused by Inadequate Procedural Review.Procedure Will Be Revised | /03L-0:on 830930,discovered That Alternate Pumps MU-P-1B,NR-P-1B & NS-P-1B Not Tested to Verify Operability on Engineered Safeguards Start Signal.Caused by Inadequate Procedural Review.Procedure Will Be Revised | |
| 05000320/LER-1983-031-03, /03L-0:between 830721 & 0805,air Intake Tunnel Halon Svs Partially Disarmed on Four Occasions to Protect Sys from lightning-induced Spurious Halon Discharges.Louvers Being Installed | /03L-0:between 830721 & 0805,air Intake Tunnel Halon Svs Partially Disarmed on Four Occasions to Protect Sys from lightning-induced Spurious Halon Discharges.Louvers Being Installed | |
| 05000289/LER-1983-032-01, /01T-0:on 830930,selected Instrument Lines Required Mods to Meet Design Basis.Evaluation Revealed Stresses from Thermal & Seismic Loads Below Operability Criteria.Loops Installed Prior to Criticality | /01T-0:on 830930,selected Instrument Lines Required Mods to Meet Design Basis.Evaluation Revealed Stresses from Thermal & Seismic Loads Below Operability Criteria.Loops Installed Prior to Criticality | |
| 05000289/LER-1983-033-03, /03L-0:on 830928,reactor Bldg High Pressure Switch Setpoint on Reactor Protective Sys Channel a Found Less Conservative than Tech Spec Limit.Caused by Setpoint Drift. Switch Recalibr | /03L-0:on 830928,reactor Bldg High Pressure Switch Setpoint on Reactor Protective Sys Channel a Found Less Conservative than Tech Spec Limit.Caused by Setpoint Drift. Switch Recalibr | |