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| 05000220/LER-1983-001-04, /04L-0:on 830122,while Performing Environ Surveillance testing,30 Ft Wind Direction Sensor Alignment Azimuth Indicator Found High.Caused by Improperly Installed Mounting Plate.Sensor Readjusted | /04L-0:on 830122,while Performing Environ Surveillance testing,30 Ft Wind Direction Sensor Alignment Azimuth Indicator Found High.Caused by Improperly Installed Mounting Plate.Sensor Readjusted | |
| 05000220/LER-1983-001, Forwards LER 83-001/04L-0 | Forwards LER 83-001/04L-0 | |
| 05000220/LER-1983-002-04, /04L-0:on 821018,while Analyzing Quarterly Canal Water Samples,Tritium Concentration in Inlet Sample Was 39.2 Times Control Result.Caused by Normal Intake & Discharge Tunnels Operating in Reverse Flow Mode | /04L-0:on 821018,while Analyzing Quarterly Canal Water Samples,Tritium Concentration in Inlet Sample Was 39.2 Times Control Result.Caused by Normal Intake & Discharge Tunnels Operating in Reverse Flow Mode | |
| 05000220/LER-1983-002, Forwards LER 83-002/04L-0 | Forwards LER 83-002/04L-0 | |
| 05000220/LER-1983-003, Forwards LER 83-003/04L-0 | Forwards LER 83-003/04L-0 | |
| 05000220/LER-1983-003-04, /04L-0:from 821001-31,lower Limit of Detection (LLD) Sensitivity Not Met for Many Radionuclides During Analysis of Oct Fish Samples.Caused by Higher LLD Values Resulting from Conversion of Wet Weight to Dry Weight Units | /04L-0:from 821001-31,lower Limit of Detection (LLD) Sensitivity Not Met for Many Radionuclides During Analysis of Oct Fish Samples.Caused by Higher LLD Values Resulting from Conversion of Wet Weight to Dry Weight Units | |
| 05000220/LER-1983-004, Forwards LER 83-004/03L-0 | Forwards LER 83-004/03L-0 | |
| 05000220/LER-1983-004-03, /03L-0:on 821130,shoreline Sediment Samples Yielded Concentration of Cs-137 in Excess of Tech Spec Requirements.Possibly Caused by Site Liquid Effluents. Addl Sampling Will Be Conducted | /03L-0:on 821130,shoreline Sediment Samples Yielded Concentration of Cs-137 in Excess of Tech Spec Requirements.Possibly Caused by Site Liquid Effluents. Addl Sampling Will Be Conducted | |
| 05000220/LER-1983-005-01, /01T-0:on 830315,during Major Maint Outage,Reactor Bldg Ventilation Sys Isolated & Emergency Ventilation Sys Initiated Due to Release of Radioactive Contaminates.Caused by Failure of Cleanup Filter Sludge Tank Indicator | /01T-0:on 830315,during Major Maint Outage,Reactor Bldg Ventilation Sys Isolated & Emergency Ventilation Sys Initiated Due to Release of Radioactive Contaminates.Caused by Failure of Cleanup Filter Sludge Tank Indicator | |
| 05000220/LER-1983-005, Forwards LER 83-005/01T-0 | Forwards LER 83-005/01T-0 | |
| 05000220/LER-1983-006, /03L-0:on 830426,control Room Ventilation Sys Removed from Svc for Mods to Control Room Wall,Per LER 83-06.Temporary Flexible Ducting in Place During Mods. Mods Completed.Ventilation Sys Returned to Svc | /03L-0:on 830426,control Room Ventilation Sys Removed from Svc for Mods to Control Room Wall,Per LER 83-06.Temporary Flexible Ducting in Place During Mods. Mods Completed.Ventilation Sys Returned to Svc | |
| 05000220/LER-1983-006-03, /03L-0:on 830411,while Performing Design Review, Discovered That Poured Concrete North & West Walls of Control Room Would Not Meet Original Seismic Criteria. Mods Made to Improve Wall Structural Loading Capabilities | /03L-0:on 830411,while Performing Design Review, Discovered That Poured Concrete North & West Walls of Control Room Would Not Meet Original Seismic Criteria. Mods Made to Improve Wall Structural Loading Capabilities | |
| 05000220/LER-1983-007-03, /03L-0:on 830419,30-ft Wind Direction Sensor Azimuth Alignment Found Misaligned by 9.8 Degrees.Caused by Improper Alignment of Mounting Plates When Installed.Sensors Readjusted & Checked | /03L-0:on 830419,30-ft Wind Direction Sensor Azimuth Alignment Found Misaligned by 9.8 Degrees.Caused by Improper Alignment of Mounting Plates When Installed.Sensors Readjusted & Checked | |
| 05000220/LER-1983-010-03, /03L-0:on 830524,core Topping Pump 121 Removed from Svc to Replace Packing.Caused by Air Leaking Due to Iltr Pressure Introduction in Pump.Packing Replaced & Pump Returned to Svc within 22 H | /03L-0:on 830524,core Topping Pump 121 Removed from Svc to Replace Packing.Caused by Air Leaking Due to Iltr Pressure Introduction in Pump.Packing Replaced & Pump Returned to Svc within 22 H | |
| 05000220/LER-1983-011-03, /03L-0:on 830604,electromatic Relief Valve 121 Failed to Open.Caused by Dirty Pilot Due to Oxide Buildup During Extended Outage.Pilot Cleaned & Retested & Normal Shutdown Initiated | /03L-0:on 830604,electromatic Relief Valve 121 Failed to Open.Caused by Dirty Pilot Due to Oxide Buildup During Extended Outage.Pilot Cleaned & Retested & Normal Shutdown Initiated | |
| 05000220/LER-1983-012-03, /03L-0:on 830609,10 Time Delay Relay 11K62 Stuck in Energized Position & Failed to Time Out & Initiate Emergency Cooling Sys.Caused by Dirty Clutch Plunger. Periodic Cleaning of Plunger Initiated | /03L-0:on 830609,10 Time Delay Relay 11K62 Stuck in Energized Position & Failed to Time Out & Initiate Emergency Cooling Sys.Caused by Dirty Clutch Plunger. Periodic Cleaning of Plunger Initiated | |
| 05000220/LER-1983-013-03, /03L-0:on 830610,during Routine Surveillance,Lock Found Missing from Outside Inlet Valve 40-12 for Core Spray Sys.Valve & Breaker in Open Position.Lock Missing for No More than 15 Days.Lock Replaced | /03L-0:on 830610,during Routine Surveillance,Lock Found Missing from Outside Inlet Valve 40-12 for Core Spray Sys.Valve & Breaker in Open Position.Lock Missing for No More than 15 Days.Lock Replaced | |
| 05000220/LER-1983-014-03, /03L-0:on 830615,16,17,20 & 21,115-kV Offsite Power Line Removed from Svc for 10 H Each Day.Caused by Need to Allow Const of 115 Kv Line for Unit 2,currently Under Const.Line Returned to Svc Each Day | /03L-0:on 830615,16,17,20 & 21,115-kV Offsite Power Line Removed from Svc for 10 H Each Day.Caused by Need to Allow Const of 115 Kv Line for Unit 2,currently Under Const.Line Returned to Svc Each Day | |
| 05000220/LER-1983-015-03, /03L-0:on 830624,while Performing Surveillance Test N1-ISP-RVT on Main Steam Electromatic Relief Valve Tailpipe Temp Sensors,Inputs Indicated Excessive Drift.Cause Unknown.Corrective Action Being Evaluated | /03L-0:on 830624,while Performing Surveillance Test N1-ISP-RVT on Main Steam Electromatic Relief Valve Tailpipe Temp Sensors,Inputs Indicated Excessive Drift.Cause Unknown.Corrective Action Being Evaluated | |
| 05000220/LER-1983-016-03, /03L-0:on 830718,during Normal Operations,Main Steam Line Radiation Monitor 122 Declared Inoperable After Displaying Low Readings Since 830717.Caused by Defective Detector Output Connector on Monitor 122 | /03L-0:on 830718,during Normal Operations,Main Steam Line Radiation Monitor 122 Declared Inoperable After Displaying Low Readings Since 830717.Caused by Defective Detector Output Connector on Monitor 122 | |
| 05000220/LER-1983-017-03, /03L-0:on 830707,HPCI Feedwater Booster Pumps 11 & 13 Taken Out to Svc to Inspect Impellers Due to Similar Problem on nonsafety-related Pump.Parts of Strainer Found in Pumps But Pumps Undamaged | /03L-0:on 830707,HPCI Feedwater Booster Pumps 11 & 13 Taken Out to Svc to Inspect Impellers Due to Similar Problem on nonsafety-related Pump.Parts of Strainer Found in Pumps But Pumps Undamaged | |
| 05000220/LER-1983-018-03, /03L-0:on 830709,Agastat Time Delay Relay 11K62A Failed to Time Out at Correct Time & to Initiate Emergency Cooling Sys.Caused by Dirty Timing Orifice.Needle Valve Exercised & Timer Reset | /03L-0:on 830709,Agastat Time Delay Relay 11K62A Failed to Time Out at Correct Time & to Initiate Emergency Cooling Sys.Caused by Dirty Timing Orifice.Needle Valve Exercised & Timer Reset | |
| 05000220/LER-1983-019-03, /03L-0:on 830623,two Monthly Surveillance Tests on Inadequate Core cooling-accident Level Monitor Missed Following 811231 Installation.Surveillance Procedures Generated & Added to Schedule | /03L-0:on 830623,two Monthly Surveillance Tests on Inadequate Core cooling-accident Level Monitor Missed Following 811231 Installation.Surveillance Procedures Generated & Added to Schedule | |
| 05000220/LER-1983-020-03, During Major Outage While Performing Local Leak Rate Testing,Leakage from Valves 58.1-01 & 58.1-02 Found to Exceed Tech Specs.Caused by Corrosion Buildup.New Clapper Installed | During Major Outage While Performing Local Leak Rate Testing,Leakage from Valves 58.1-01 & 58.1-02 Found to Exceed Tech Specs.Caused by Corrosion Buildup.New Clapper Installed | |
| 05000220/LER-1983-020, Forwards Updated LER 83-020/03X-1 | Forwards Updated LER 83-020/03X-1 | |
| 05000220/LER-1983-021-03, /03L-0:on 830720,22,26 & 28,emergency Cooling Sys Loop 11 Taken Out of Svc for Periods Up to 5 H.Caused by Attempt to Reseat Isolation Valve 39-05.Valve Seat Lapped & Loop Returned to Svc | /03L-0:on 830720,22,26 & 28,emergency Cooling Sys Loop 11 Taken Out of Svc for Periods Up to 5 H.Caused by Attempt to Reseat Isolation Valve 39-05.Valve Seat Lapped & Loop Returned to Svc | |
| 05000220/LER-1983-022-01, /01T-0:on 830721,during Normal Operation,Gap Observed Under Outside Reactor Bldg Track Bay Door.Caused by Failure to Reinstall Removable Seals.Seals Installed. Procedures Reviewed W/Personnel | /01T-0:on 830721,during Normal Operation,Gap Observed Under Outside Reactor Bldg Track Bay Door.Caused by Failure to Reinstall Removable Seals.Seals Installed. Procedures Reviewed W/Personnel | |
| 05000220/LER-1983-024-04, /04L-0:during May,Lower Limit of Detection Sensitivity for Fish Analysis Sample Data Not Met for Many Radionuclide Samples.Caused by Incorrect Converting of LLD Values | /04L-0:during May,Lower Limit of Detection Sensitivity for Fish Analysis Sample Data Not Met for Many Radionuclide Samples.Caused by Incorrect Converting of LLD Values | |
| 05000220/LER-1983-024-03, /03L-0:on 830826,one of Two Inadequate Core Cooling Reactor Core Level Indicators Failed Surveillance Test.Caused by High Register Value Due to Bad Contacts.Sys Reinitialized & Register Zeroed | /03L-0:on 830826,one of Two Inadequate Core Cooling Reactor Core Level Indicators Failed Surveillance Test.Caused by High Register Value Due to Bad Contacts.Sys Reinitialized & Register Zeroed | |
| 05000220/LER-1983-025, Corrected LER 83-025/04L-0:while Reviewing Environ Radiation Fish Analysis Sample Data,Determined That Lower Limit of Detection Sensitivity Not Met for Several Radionuclides During Analysis of May Fish Samples | Corrected LER 83-025/04L-0:while Reviewing Environ Radiation Fish Analysis Sample Data,Determined That Lower Limit of Detection Sensitivity Not Met for Several Radionuclides During Analysis of May Fish Samples | |
| 05000220/LER-1983-026-03, /03L-0:on 830909,inputs Indicated Excessive Drift Across Thermocouple B410.Cause Unknown.Poor Connection in Terminal Box Suspected.Corrective Action Will Be Determined During Next Cold Shutdown | /03L-0:on 830909,inputs Indicated Excessive Drift Across Thermocouple B410.Cause Unknown.Poor Connection in Terminal Box Suspected.Corrective Action Will Be Determined During Next Cold Shutdown | |
| 05000220/LER-1983-027-03, /03L-0:on 830923,during Normal Full Power Operations,Two of Three Feedwater Strings Tripped & Cooler Water Entered Reactor Core.Caused by Bad Fuse Holder in Reactor Trip Bus 131.Fuse Holder Replaced | /03L-0:on 830923,during Normal Full Power Operations,Two of Three Feedwater Strings Tripped & Cooler Water Entered Reactor Core.Caused by Bad Fuse Holder in Reactor Trip Bus 131.Fuse Holder Replaced | |
| 05000220/LER-1983-028-03, /03L-0:on 831027,oil Reservoir Indicators to Snubbers 39-HS-18 & 19 Found Off Scale on Low End.Snubbers Removed,Replaced,Tested & Found Operable.No Cause Noted.No Corrective Action Necessary | /03L-0:on 831027,oil Reservoir Indicators to Snubbers 39-HS-18 & 19 Found Off Scale on Low End.Snubbers Removed,Replaced,Tested & Found Operable.No Cause Noted.No Corrective Action Necessary | |
| 05000220/LER-1983-029-04, /04T-0:on 830929,analysis of Shoreline Sediment Sample Showed Cs-137 Level Exceeding ETS Control Sample Level.Caused by Decrease in Control Sample Low Level Dose Level During May 1983 | /04T-0:on 830929,analysis of Shoreline Sediment Sample Showed Cs-137 Level Exceeding ETS Control Sample Level.Caused by Decrease in Control Sample Low Level Dose Level During May 1983 | |
| 05000220/LER-1983-030-01, /01T-0:on 831003,while Carbon Dioxide Fire Suppression Sys Out of Svc for Surveillance Testing, Continuous Fire Watch Changed to Unapproved Continuous Fire Patrol.Caused by Manpower Problem | /01T-0:on 831003,while Carbon Dioxide Fire Suppression Sys Out of Svc for Surveillance Testing, Continuous Fire Watch Changed to Unapproved Continuous Fire Patrol.Caused by Manpower Problem | |
| 05000220/LER-1983-031-04, /04L-0:on 831102,differential Temp Outputs at 200 & 100 Ft Discovered Out of Calibr.Cause Unknown.Outputs Readjusted,Procedures Modified & Frequency of Testing Increased | /04L-0:on 831102,differential Temp Outputs at 200 & 100 Ft Discovered Out of Calibr.Cause Unknown.Outputs Readjusted,Procedures Modified & Frequency of Testing Increased | |
| 05000220/LER-1983-032-01, /01T-0:on 831017,3/4-inch Test Valve Found Opened, Allowing Free Communication Between Torus Liquid Region & Secondary Containment Atmosphere Through Penetration XS-348. Cause Undetermined.Procedures Changed | /01T-0:on 831017,3/4-inch Test Valve Found Opened, Allowing Free Communication Between Torus Liquid Region & Secondary Containment Atmosphere Through Penetration XS-348. Cause Undetermined.Procedures Changed | |
| 05000220/LER-1983-033-03, /03L-0:on 831018,during Normal Operation,Visual Insp of Snubber 39-4S-21 Revealed Oil Reservoir Indicated off-scale Toward Low End.Snubber Removed & Proven Operable. Snubber Replaced 831019 to Insure Operability | /03L-0:on 831018,during Normal Operation,Visual Insp of Snubber 39-4S-21 Revealed Oil Reservoir Indicated off-scale Toward Low End.Snubber Removed & Proven Operable. Snubber Replaced 831019 to Insure Operability | |
| 05000220/LER-1983-034-03, /03L-0:on 831101,while Performing Maint Work on Reactor Bldg Air Lock Doors,Doors Opened Simultaneously Several Times.Cause Not Stated.Special Training Developed in Response to IE Insp Rept 50-220/83-17 | /03L-0:on 831101,while Performing Maint Work on Reactor Bldg Air Lock Doors,Doors Opened Simultaneously Several Times.Cause Not Stated.Special Training Developed in Response to IE Insp Rept 50-220/83-17 | |
| 05000220/LER-1983-035-03, /03L-0:on 831105,feedwater Pump 12 Removed from Svc Due to Overheating Bearing.Caused by Discharge Check Valve Failure to Close,Resulting in Reverse Rotation of Pump.Valve Seated & Pinion Gears Replaced | /03L-0:on 831105,feedwater Pump 12 Removed from Svc Due to Overheating Bearing.Caused by Discharge Check Valve Failure to Close,Resulting in Reverse Rotation of Pump.Valve Seated & Pinion Gears Replaced | |
| 05000220/LER-1983-036-03, /03L-0:on 831107,fuel Zone Water Level Monitoring Accurex Sys Found in Idle State.Cause Unknown Suspected That Stop Signal Received Stopping Program.Accurex Logger Restarted & Addl Surveillance Performed | /03L-0:on 831107,fuel Zone Water Level Monitoring Accurex Sys Found in Idle State.Cause Unknown Suspected That Stop Signal Received Stopping Program.Accurex Logger Restarted & Addl Surveillance Performed | |
| 05000220/LER-1983-037-03, /03L-0:on 831110,during Routine Surveillance Testing on Core Spray Sys,Leakage from Vent Line Observed on Core Spray Topping Pump 121.Caused by Cracked 3/4-inch Diameter Nipple on Pump Vent Line 121 | /03L-0:on 831110,during Routine Surveillance Testing on Core Spray Sys,Leakage from Vent Line Observed on Core Spray Topping Pump 121.Caused by Cracked 3/4-inch Diameter Nipple on Pump Vent Line 121 | |
| 05000220/LER-1983-038-03, /03L-0:on 831110,discovered That Emergency Condenser Isolation Valves Not Stroke time-tested Correctly. Caused by Nonconforming Test Procedure.Procedure Revised to Comply W/Tech Specs | /03L-0:on 831110,discovered That Emergency Condenser Isolation Valves Not Stroke time-tested Correctly. Caused by Nonconforming Test Procedure.Procedure Revised to Comply W/Tech Specs | |
| 05000220/LER-1983-039-03, /03L-0:on 831202,steam Electronic Relief Valve Tail Pipe Temp Sensors Indicated Loose Connections on Thermocouple.Cause Undetermined.Investigation Expected During Next Drywell Entry | /03L-0:on 831202,steam Electronic Relief Valve Tail Pipe Temp Sensors Indicated Loose Connections on Thermocouple.Cause Undetermined.Investigation Expected During Next Drywell Entry | |
| 05000220/LER-1983-040-03, /03L-0:on 831122,main Steam Radiation Monitor 122 Observed Gradually Degrading,Resulting in Low Readings. Caused by Loose Signal Cable Connector & Loss of Detector Sensitivity.Connector & Detector Replaced | /03L-0:on 831122,main Steam Radiation Monitor 122 Observed Gradually Degrading,Resulting in Low Readings. Caused by Loose Signal Cable Connector & Loss of Detector Sensitivity.Connector & Detector Replaced | |
| 05000220/LER-1983-041-03, /03L-0:on 831216,Accurex Fuel Zone Water Level Monitoring Sys Experienced Loss of Memory on Channel 12B. Caused by Failure of Plant Process Computer Interface. Program Reloaded Into Accurex | /03L-0:on 831216,Accurex Fuel Zone Water Level Monitoring Sys Experienced Loss of Memory on Channel 12B. Caused by Failure of Plant Process Computer Interface. Program Reloaded Into Accurex | |
| 05000220/LER-1983-042-03, /03L-0:on 831122,fuel Zone Water Level Measuring Sys (Accurex) Taken Out of Svc to Modify Program to Improve Accuracy.Accurex Modified Per GE Recommendations & Returned to Svc in 1 H | /03L-0:on 831122,fuel Zone Water Level Measuring Sys (Accurex) Taken Out of Svc to Modify Program to Improve Accuracy.Accurex Modified Per GE Recommendations & Returned to Svc in 1 H | |
| 05000220/LER-1983-043-03, /03L-0:on 831128,fuel Zone Water Level Measuring Sys (Accurex) Found in Sys Idle Condition for Channel 11(A) at Time of Planned Surveillance Procedure N1-ISP-36- Icc.Cause Not Yet Known.Investigation Under Way | /03L-0:on 831128,fuel Zone Water Level Measuring Sys (Accurex) Found in Sys Idle Condition for Channel 11(A) at Time of Planned Surveillance Procedure N1-ISP-36- Icc.Cause Not Yet Known.Investigation Under Way | |
| 05000220/LER-1983-044-01, /01T-0:on 831128,reactor Bldg Penetration Found Unsealed.Caused by Shrinking of Sealing Matl Forced Out of Penetration Due to Pressure Differential.Fire Watch Established.Penetration Resealed | /01T-0:on 831128,reactor Bldg Penetration Found Unsealed.Caused by Shrinking of Sealing Matl Forced Out of Penetration Due to Pressure Differential.Fire Watch Established.Penetration Resealed | |
| 05000220/LER-1983-044, Special Rept of Actions Taken to Assess Current Status of Fire Barrier Penetrations & to Assure Future Integrity of Barriers Following Improper Sealing of One Penetration Reported in LER 83-44 | Special Rept of Actions Taken to Assess Current Status of Fire Barrier Penetrations & to Assure Future Integrity of Barriers Following Improper Sealing of One Penetration Reported in LER 83-44 | |