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| 05000281/LER-1979-001, Forwards LER 79-001/03L-0 | Forwards LER 79-001/03L-0 | |
| 05000280/LER-1979-001, Forwards LER 79-001/01X-0 | Forwards LER 79-001/01X-0 | |
| 05000280/LER-1979-001-01, /01X-0 on 790102:potential non-conservatism Noted in Calculations Performed in Monitoring Heat Flux Hot Channel Factor.Caused by Failure of Sys & Procedures Used for Relevant Surveillance.Input Values Adjusted | /01X-0 on 790102:potential non-conservatism Noted in Calculations Performed in Monitoring Heat Flux Hot Channel Factor.Caused by Failure of Sys & Procedures Used for Relevant Surveillance.Input Values Adjusted | |
| 05000281/LER-1979-001-03, /03L-0 on 790112:personnel Batch Inner Door & Emergency Escape Manway Not Leak Tested within 72-h After Opening Because Escape Manway Safety Lock Believed Broken, Posing Hazard | /03L-0 on 790112:personnel Batch Inner Door & Emergency Escape Manway Not Leak Tested within 72-h After Opening Because Escape Manway Safety Lock Believed Broken, Posing Hazard | |
| 05000281/LER-1979-002, Forwards LER 79-002/03L-0 & 79-003/03L-0 | Forwards LER 79-002/03L-0 & 79-003/03L-0 | |
| 05000281/LER-1979-002-03, /03L-0 on 790120: During Normal Operation Channel Check Revealed That Pressurizer Pressure Channel I Drifted Above Tech Spec Limit as Compared to Channels II & Iii. Caused by Failure of Channel I Pressure Transmitter | /03L-0 on 790120: During Normal Operation Channel Check Revealed That Pressurizer Pressure Channel I Drifted Above Tech Spec Limit as Compared to Channels II & Iii. Caused by Failure of Channel I Pressure Transmitter | |
| 05000280/LER-1979-002-03, /03L-0 on 790115:electrical Penetration Between Turbine Bldg & Emergency Switchgear Room Not Properly Sealed.Caused by Penetration Being Broken During Previous Implementation of Design Change | /03L-0 on 790115:electrical Penetration Between Turbine Bldg & Emergency Switchgear Room Not Properly Sealed.Caused by Penetration Being Broken During Previous Implementation of Design Change | |
| 05000280/LER-1979-002, Forwards LER 79-002/03L-0 | Forwards LER 79-002/03L-0 | |
| 05000280/LER-1979-003-03, /03L-0 on 790124:error Detected in Calibr Procedures for Steam Flow Instrumentation.Caused by Error Made When Calibr Procedures Changed | /03L-0 on 790124:error Detected in Calibr Procedures for Steam Flow Instrumentation.Caused by Error Made When Calibr Procedures Changed | |
| 05000280/LER-1979-003, Forwards LER 79-003/03L-0 | Forwards LER 79-003/03L-0 | |
| 05000281/LER-1979-003-03, /03L-0 on 790122: Following Containment Entrance Equipment Hatch Escape Airlock,Outer Door Was Not Proven Sealed within 72-h from Initial Opening.Caused by Problems in Sealing Exterior Hatch | /03L-0 on 790122: Following Containment Entrance Equipment Hatch Escape Airlock,Outer Door Was Not Proven Sealed within 72-h from Initial Opening.Caused by Problems in Sealing Exterior Hatch | |
| 05000280/LER-1979-004, Update to LER 79-004/01X-2:on 790309,A/E Notified Util of Possible Nonconservatisms in Pipe Stress Code Used to Analyze Piping Sys & of Innaccurate Valve Weights Used by Error in Pipe Stress Analysis & Valve Weight | Update to LER 79-004/01X-2:on 790309,A/E Notified Util of Possible Nonconservatisms in Pipe Stress Code Used to Analyze Piping Sys & of Innaccurate Valve Weights Used by Error in Pipe Stress Analysis & Valve Weight | |
| 05000280/LER-1979-004-01, /01X-1 on 790309:notification Received of Possible Errors in Pipe Stress Code Analyses in Some Facility Piping Sys.Inaccurate Value Weights Were Also Identified. Plants Are Shut Down Pending Evaluation | /01X-1 on 790309:notification Received of Possible Errors in Pipe Stress Code Analyses in Some Facility Piping Sys.Inaccurate Value Weights Were Also Identified. Plants Are Shut Down Pending Evaluation | |
| 05000281/LER-1979-004, Forwards LER 79-004/03L-0 | Forwards LER 79-004/03L-0 | |
| 05000281/LER-1979-004-03, /03L-0 on 790204:setpoints of Seven Main Steam Safety Valves Not within Tech Spec Limits.Caused by Normal Setpoint Drift | /03L-0 on 790204:setpoints of Seven Main Steam Safety Valves Not within Tech Spec Limits.Caused by Normal Setpoint Drift | |
| 05000280/LER-1979-005, Forwards LER 79-005/03L-0 | Forwards LER 79-005/03L-0 | |
| 05000281/LER-1979-005-03, /03L-0 on 790204:at Cold Shutdown,Valve MOV-SW-203C Failed to Cycle Electrically.Caused by Slighting Bent Clutch Shaft in Valve Operation.Part Dismantled & Overhauled | /03L-0 on 790204:at Cold Shutdown,Valve MOV-SW-203C Failed to Cycle Electrically.Caused by Slighting Bent Clutch Shaft in Valve Operation.Part Dismantled & Overhauled | |
| 05000280/LER-1979-005-03, /03L-0 on 790226:radiation Recorder RR-175 Stopped Printing.Caused by Gummed Gear Shaft Bushing in Print Mechanism.Bushing Was Freed & Print Mechanism Cleaned & Lubricated | /03L-0 on 790226:radiation Recorder RR-175 Stopped Printing.Caused by Gummed Gear Shaft Bushing in Print Mechanism.Bushing Was Freed & Print Mechanism Cleaned & Lubricated | |
| 05000280/LER-1979-006, Forwards LER 79-006/03L-0 | Forwards LER 79-006/03L-0 | |
| 05000280/LER-1979-006-03, /03L-0 on 790309:fire Seals in Barrier Penetration Were Removed & Not Replaced.Leak Test Not Performed on Other Seals That Had Been Reinstalled.Caused by Inadequate Administrative Control | /03L-0 on 790309:fire Seals in Barrier Penetration Were Removed & Not Replaced.Leak Test Not Performed on Other Seals That Had Been Reinstalled.Caused by Inadequate Administrative Control | |
| 05000281/LER-1979-006-03, /03L-0 on 790204:at Cold Shutdown,Valve MOV-SW-203D Failed to Operate Electrically During Functional Test.Caused by Mechanical Binding of Valve.Valve Bearing Was Replaced | /03L-0 on 790204:at Cold Shutdown,Valve MOV-SW-203D Failed to Operate Electrically During Functional Test.Caused by Mechanical Binding of Valve.Valve Bearing Was Replaced | |
| 05000280/LER-1979-007-03, /03L-0 on 790320:w/unit Shutdown,Visual Insp Resulted in Declaring One Snubber Inoperable Because of Low Fluid Level.Caused by Leakage from Reservoir Fill Fitting. Snubber Removed & Rebuilt | /03L-0 on 790320:w/unit Shutdown,Visual Insp Resulted in Declaring One Snubber Inoperable Because of Low Fluid Level.Caused by Leakage from Reservoir Fill Fitting. Snubber Removed & Rebuilt | |
| 05000280/LER-1979-007, Forwards LER 79-007/03L-0 | Forwards LER 79-007/03L-0 | |
| 05000281/LER-1979-007-03, /03L-0 on 790205:during Functional Test,Damper 1-VS-103A Failed to Close on Train a Safety Injection Initiation.Caused by Hang Up in Brake Mechanism Holding Supply Damper Open Against Closed Spring.Damper Closed | /03L-0 on 790205:during Functional Test,Damper 1-VS-103A Failed to Close on Train a Safety Injection Initiation.Caused by Hang Up in Brake Mechanism Holding Supply Damper Open Against Closed Spring.Damper Closed | |
| 05000281/LER-1979-008-03, During Surveillance Check,Found Deterioration of Piping on Low Portion of Recirculation Spray Subsystems.Caused by Chloride Stress Corrosion.Piping Replaced W/Nonsensitized Piping | During Surveillance Check,Found Deterioration of Piping on Low Portion of Recirculation Spray Subsystems.Caused by Chloride Stress Corrosion.Piping Replaced W/Nonsensitized Piping | |
| 05000281/LER-1979-008, Forwards Updated LER 79-008/03X-1 | Forwards Updated LER 79-008/03X-1 | |
| 05000280/LER-1979-008, Forwards LER 79-008/01T-0 | Forwards LER 79-008/01T-0 | |
| 05000280/LER-1979-008-01, /01T-0 on 790323:during Load Study of 480 Volts Ac Emergency Bus,Discovered That an under-power Condition Could Exist for Postulated LOCA with or W/O Loss of Offsite Power. Caused by Design Deficiencies During Const | /01T-0 on 790323:during Load Study of 480 Volts Ac Emergency Bus,Discovered That an under-power Condition Could Exist for Postulated LOCA with or W/O Loss of Offsite Power. Caused by Design Deficiencies During Const | |
| 05000280/LER-1979-009-01, /01T-0 on 790412:GE Informed Util That Potential Problem Exists in Inside Recirculation Spray Pump Motors.Caused by Possible Overheating of Lower Bearing Due to Clearance Tolerances Allowed on End Shields & Shaft | /01T-0 on 790412:GE Informed Util That Potential Problem Exists in Inside Recirculation Spray Pump Motors.Caused by Possible Overheating of Lower Bearing Due to Clearance Tolerances Allowed on End Shields & Shaft | |
| 05000280/LER-1979-009, Forwards LER 79-009/01T-0 | Forwards LER 79-009/01T-0 | |
| 05000281/LER-1979-009-03, /03L-0 on 790208:while Performing Penetrant Test 39B-1,mechanic Discovered 3 Snubbers Were Not on Test.Caused by Inadvertent Omission.Change Initiated to Add 3 Snubbers to Penetrant Test 39B-1 | /03L-0 on 790208:while Performing Penetrant Test 39B-1,mechanic Discovered 3 Snubbers Were Not on Test.Caused by Inadvertent Omission.Change Initiated to Add 3 Snubbers to Penetrant Test 39B-1 | |
| 05000281/LER-1979-009, Forwards LER 79-009/03L-0 | Forwards LER 79-009/03L-0 | |
| 05000280/LER-1979-010-03, /03L-0 on 790323:while in Cold Shutdown, Discrepancies Found in Location & Configuration of Pipe Supports.Caused by Const Deficiencies & Util Maint.Necessary Repairs Will Be Made Prior to Startup | /03L-0 on 790323:while in Cold Shutdown, Discrepancies Found in Location & Configuration of Pipe Supports.Caused by Const Deficiencies & Util Maint.Necessary Repairs Will Be Made Prior to Startup | |
| 05000280/LER-1979-010, Forwards LER 79-010/03L-0 | Forwards LER 79-010/03L-0 | |
| 05000281/LER-1979-010, Forwards LER 79-010/03L-0 | Forwards LER 79-010/03L-0 | |
| 05000281/LER-1979-010-03, /03L-0 on 790306:during tests,19 of 30 Snubbers Did Not Meet Acceptance Criteria.Caused by Setting Drift & non-readjustment to Optimum Settings After Previous Satisfactory Tests.Snubbers Readjusted,Repaired or Replaced | /03L-0 on 790306:during tests,19 of 30 Snubbers Did Not Meet Acceptance Criteria.Caused by Setting Drift & non-readjustment to Optimum Settings After Previous Satisfactory Tests.Snubbers Readjusted,Repaired or Replaced | |
| 05000280/LER-1979-011-03, /03X-1 on 790828:process & Ventilation Particulates & Gaseous Monitors Were W/O Power on Two Occasions.Caused by Loose Lug Connection on Power Supply Cable.Loose Connection Repaired & Plants Restored to Svc | /03X-1 on 790828:process & Ventilation Particulates & Gaseous Monitors Were W/O Power on Two Occasions.Caused by Loose Lug Connection on Power Supply Cable.Loose Connection Repaired & Plants Restored to Svc | |
| 05000280/LER-1979-011, Forwards LER 79-011/03X-1 | Forwards LER 79-011/03X-1 | |
| 05000281/LER-1979-011, Forwards LER 79-011/12T-0 | Forwards LER 79-011/12T-0 | |
| 05000281/LER-1979-011-12, /12T-0 on 790414:individual Received Excessive Dose While Inspecting Area Beneath Vessel.Caused by Elevated Radiation Levels Due to Incore Instrumentation Refueling Status.Individual Disciplined | /12T-0 on 790414:individual Received Excessive Dose While Inspecting Area Beneath Vessel.Caused by Elevated Radiation Levels Due to Incore Instrumentation Refueling Status.Individual Disciplined | |
| 05000280/LER-1979-012-03, During Shutdown Functional Test of 74 Snubbers Revealed 21 Not Meeting Design Criteria.Caused by Snubbers Not Being Readjusted to Design Conditions.Units Reset | During Shutdown Functional Test of 74 Snubbers Revealed 21 Not Meeting Design Criteria.Caused by Snubbers Not Being Readjusted to Design Conditions.Units Reset | |
| 05000280/LER-1979-012, Forwards Updated LER 79-012/03X-1 | Forwards Updated LER 79-012/03X-1 | |
| 05000281/LER-1979-012, Forwards LER 79-012/08T-0 | Forwards LER 79-012/08T-0 | |
| 05000281/LER-1979-012-08, /08T-0 on 790507:caustic Residue Discovered on 62 New Fuel Assemblies.Caused by Industrial Sabotage. Fuel Removed & Assemblies Rinsed.Investigation Continuing | /08T-0 on 790507:caustic Residue Discovered on 62 New Fuel Assemblies.Caused by Industrial Sabotage. Fuel Removed & Assemblies Rinsed.Investigation Continuing | |
| 05000281/LER-1979-013, Forwards LER 79-013/01T-0 | Forwards LER 79-013/01T-0 | |
| 05000281/LER-1979-013-01, /01T-0:on 791007,MOV-SW-202B Operated Mechanically & Electrically in Apparent Reverse Manner W/Unit at Cold Shutdown.Caused by Disc Spline of Svc Water Valve Improperly Aligned to Gear Train of Motor Operator | /01T-0:on 791007,MOV-SW-202B Operated Mechanically & Electrically in Apparent Reverse Manner W/Unit at Cold Shutdown.Caused by Disc Spline of Svc Water Valve Improperly Aligned to Gear Train of Motor Operator | |
| 05000280/LER-1979-013, Forwards LER 79-013/03L-0 | Forwards LER 79-013/03L-0 | |
| 05000280/LER-1979-013-03, /03L-0 on 790410:100 Gallons Released from Boron Recovery Test Tank 1-BR-TK-2B Prior to Obtaining Sample Results.Caused by Improper Valve Lineup for Tank Recirculation in Preparation for Sampling | /03L-0 on 790410:100 Gallons Released from Boron Recovery Test Tank 1-BR-TK-2B Prior to Obtaining Sample Results.Caused by Improper Valve Lineup for Tank Recirculation in Preparation for Sampling | |
| 05000280/LER-1979-014-03, /03L-0 on 790422:liquid Waste Disposal Radiation Monitor Failed to Give High Alarm & Trip Release Valve. Caused by Instrument Drift in High Alarm Setpoint.All Liquid Waste Releases Were Secured & Alarm Board Checked | /03L-0 on 790422:liquid Waste Disposal Radiation Monitor Failed to Give High Alarm & Trip Release Valve. Caused by Instrument Drift in High Alarm Setpoint.All Liquid Waste Releases Were Secured & Alarm Board Checked | |
| 05000280/LER-1979-015-03, /03L-0 on 790422:liquid Waste Disposal Radiation Monitor Failed to Give High Alarm & Trip Release Valve. Caused by Procedural Inadequacy.Procedures Modified | /03L-0 on 790422:liquid Waste Disposal Radiation Monitor Failed to Give High Alarm & Trip Release Valve. Caused by Procedural Inadequacy.Procedures Modified | |