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| 05000316/LER-1980-001, Forwards Updated LER 80-001/03X-1 | Forwards Updated LER 80-001/03X-1 | |
| 05000315/LER-1980-001-03, /03L-0:on 800123,while Performing Airlock Seal Leak Rate Testing,Inner Airlock Declared Inoperable.Caused by Broken Adjustment Bolt.Bolt Will Be Replaced During Next Unit Refueling Outage | /03L-0:on 800123,while Performing Airlock Seal Leak Rate Testing,Inner Airlock Declared Inoperable.Caused by Broken Adjustment Bolt.Bolt Will Be Replaced During Next Unit Refueling Outage | |
| 05000316/LER-1980-001-03, /03L-0:on 800119,during Normal Startup & W/Power Level at Approx 10%,steam Generators Fed Too Much Feedwater Flow Resulting in Drop in Temp Average to 539 F.Cause Not Stated | /03L-0:on 800119,during Normal Startup & W/Power Level at Approx 10%,steam Generators Fed Too Much Feedwater Flow Resulting in Drop in Temp Average to 539 F.Cause Not Stated | |
| 05000316/LER-1980-002, Forwards LER 80-002/03L-0 | Forwards LER 80-002/03L-0 | |
| 05000316/LER-1980-002-03, /03L-0:on 800115,during Integrity Testing of South Safety Injection Train,Excessive Leakage from Safety Injection Valve to Pressurizer Relief Tank Observed.Caused by Undersized Disc Insert.Disc Insert & Nozzle Replaced | /03L-0:on 800115,during Integrity Testing of South Safety Injection Train,Excessive Leakage from Safety Injection Valve to Pressurizer Relief Tank Observed.Caused by Undersized Disc Insert.Disc Insert & Nozzle Replaced | |
| 05000315/LER-1980-002-03, /03L-0:on 800125,during Normal Operation,Loop 3 T-average & delta-T Indication Decreased & Determined Inoperable.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Was Replaced | /03L-0:on 800125,during Normal Operation,Loop 3 T-average & delta-T Indication Decreased & Determined Inoperable.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Was Replaced | |
| 05000316/LER-1980-003-03, /03L-0:on 800124,during Surveillance Test,Turbine Driven Auxiliary Feed Pump Trip & Throttle Valve Unlatched. Caused by Burned Up Reset Coil on Trip & Throttle Valve Linkage.Linkage Not Engaging Due to Worn Mating Surfaces | /03L-0:on 800124,during Surveillance Test,Turbine Driven Auxiliary Feed Pump Trip & Throttle Valve Unlatched. Caused by Burned Up Reset Coil on Trip & Throttle Valve Linkage.Linkage Not Engaging Due to Worn Mating Surfaces | |
| 05000316/LER-1980-003, Forwards LER 80-003/03L-0 | Forwards LER 80-003/03L-0 | |
| 05000315/LER-1980-003-03, /03L-0:on 800219,found Spent Fuel Pit Area Monitor Indicating Erratically & High Radiation Alarm On.Caused by Bad Detector Tube.Detector Tube Replaced & Normal Operation Verified | /03L-0:on 800219,found Spent Fuel Pit Area Monitor Indicating Erratically & High Radiation Alarm On.Caused by Bad Detector Tube.Detector Tube Replaced & Normal Operation Verified | |
| 05000315/LER-1980-003, Forwards LER 80-003/03L-0 | Forwards LER 80-003/03L-0 | |
| 05000316/LER-1980-004, Forwards LER 80-004/03L-0 | Forwards LER 80-004/03L-0 | |
| 05000316/LER-1980-004-03, /03L-0:on 800202,during Normal Operation,While Investigating Problem W/Test Circuit for B Main Turbine Stop Valve,Found Mounting Bracket for Proximity Switch Failed. Caused by Loosened Mounting Assembly Due to Vibration | /03L-0:on 800202,during Normal Operation,While Investigating Problem W/Test Circuit for B Main Turbine Stop Valve,Found Mounting Bracket for Proximity Switch Failed. Caused by Loosened Mounting Assembly Due to Vibration | |
| 05000315/LER-1980-004, Forwards LER 80-004/03L-0 | Forwards LER 80-004/03L-0 | |
| 05000315/LER-1980-004-03, While Performing Scan Sequence, One of Two Detectors in Use for Axial Power Distribution Monitoring Sys Became Inoperable.Caused by Stretched Helex in Detector & Damaged Drive Wheel | While Performing Scan Sequence, One of Two Detectors in Use for Axial Power Distribution Monitoring Sys Became Inoperable.Caused by Stretched Helex in Detector & Damaged Drive Wheel | |
| 05000315/LER-1980-005-03, /03L-0:on 800321,discovered That Unit 1 Axial Power Distribution Monitoring Sys & P-250 Axial Power Distribution Monitoring Sys Limits Were Incorrect.Caused by Personnel Using Unit 2 Fq & K(Z) Limits in Computer Program | /03L-0:on 800321,discovered That Unit 1 Axial Power Distribution Monitoring Sys & P-250 Axial Power Distribution Monitoring Sys Limits Were Incorrect.Caused by Personnel Using Unit 2 Fq & K(Z) Limits in Computer Program | |
| 05000316/LER-1980-005-03, /03L-0:on 791113,re-evaluation of Calibr Data Taken During Last Refueling Outage Revealed That Steam Line Pressure Transmitter Data Would Result in Nonconservative Differential Steam Line Pressure Setpoint for Loops 3 & 4 | /03L-0:on 791113,re-evaluation of Calibr Data Taken During Last Refueling Outage Revealed That Steam Line Pressure Transmitter Data Would Result in Nonconservative Differential Steam Line Pressure Setpoint for Loops 3 & 4 | |
| 05000315/LER-1980-006-03, /03L-0:on 800324,during Surveillance Test,Unit 1 650-ft Elevation Airlock Door Leakage of 130CFH Was Found.No Cause for Leak Found.Retest Performed W/Satisfactory Results | /03L-0:on 800324,during Surveillance Test,Unit 1 650-ft Elevation Airlock Door Leakage of 130CFH Was Found.No Cause for Leak Found.Retest Performed W/Satisfactory Results | |
| 05000316/LER-1980-006-03, /03L-0:on 800129,during Surveillance Test on Pressurizer Pressure Protection Set 3,discovered That Bistable 2 PB-457D Tripped at Value Exceeding Tech Specs. Cause Unknown.Bistable Set within Allowable Values | /03L-0:on 800129,during Surveillance Test on Pressurizer Pressure Protection Set 3,discovered That Bistable 2 PB-457D Tripped at Value Exceeding Tech Specs. Cause Unknown.Bistable Set within Allowable Values | |
| 05000315/LER-1980-007, Forwards LER 80-007/03L-0 | Forwards LER 80-007/03L-0 | |
| 05000316/LER-1980-007-03, /03L-0:on 800129,during Surveillance Test, Containment Isolation Valve NCR-252 Did Not Close Fully. Cause Unknown.New Diaphragm Placed in Valve Operator.Valve Restroked & Timed Before Returning to Svc | /03L-0:on 800129,during Surveillance Test, Containment Isolation Valve NCR-252 Did Not Close Fully. Cause Unknown.New Diaphragm Placed in Valve Operator.Valve Restroked & Timed Before Returning to Svc | |
| 05000315/LER-1980-007-03, /03L-0:on 800326,while Revising Surveillance Test Procedure for Containment Spray Sys,Some Valves in Sys Flow Path Were Discovered Not Being Cycled at Required Intervals. Caused by Personnel Overlooking Test Frequency Differ | /03L-0:on 800326,while Revising Surveillance Test Procedure for Containment Spray Sys,Some Valves in Sys Flow Path Were Discovered Not Being Cycled at Required Intervals. Caused by Personnel Overlooking Test Frequency Differences | |
| 05000315/LER-1980-008, Forwards LER 80-008/03L-0 | Forwards LER 80-008/03L-0 | |
| 05000316/LER-1980-008, Forwards LER 80-008/03L-0 | Forwards LER 80-008/03L-0 | |
| 05000315/LER-1980-008-03, /03L-0:on 800418,during Calibr of Containment Atmosphere Particulate Radiation Monitor R-11,detector Tube Found to Be Bad.Caused by Normal End of Life.Tube Replaced & Sys Placed Back Into Operation | /03L-0:on 800418,during Calibr of Containment Atmosphere Particulate Radiation Monitor R-11,detector Tube Found to Be Bad.Caused by Normal End of Life.Tube Replaced & Sys Placed Back Into Operation | |
| 05000316/LER-1980-008-03, /03L-0:on 800201,review of 791102 Test Procedure Indicated as-found Data for Loop 1,channel 1,reactor Coolant Flow Transmitter Found 3.8% Out of Calibr.Caused by Transmitter Drift.Transmitter Recalibr | /03L-0:on 800201,review of 791102 Test Procedure Indicated as-found Data for Loop 1,channel 1,reactor Coolant Flow Transmitter Found 3.8% Out of Calibr.Caused by Transmitter Drift.Transmitter Recalibr | |
| 05000316/LER-1980-009-03, /03L-0:on 800208,during Normal Operation,Steam Generator 3 Level Indication Became Erratic & Was Declared Inoperable.Caused by Faulty Transmitter.New Transmitter Installed | /03L-0:on 800208,during Normal Operation,Steam Generator 3 Level Indication Became Erratic & Was Declared Inoperable.Caused by Faulty Transmitter.New Transmitter Installed | |
| 05000315/LER-1980-009, Forwards LER 80-009/03L-0 | Forwards LER 80-009/03L-0 | |
| 05000315/LER-1980-009-03, /03L-0:on 800428,while Performing Spent Fuel Pit Exhaust Fan Test,Charcoal Bed Exhaust Damper Would Not Fully Open.Caused by Loose Tip of Charcoal Bed Exhaust Damper Rubbing Against Filter Housing.Loose Portion Removed | /03L-0:on 800428,while Performing Spent Fuel Pit Exhaust Fan Test,Charcoal Bed Exhaust Damper Would Not Fully Open.Caused by Loose Tip of Charcoal Bed Exhaust Damper Rubbing Against Filter Housing.Loose Portion Removed | |
| 05000316/LER-1980-009, Updated LER 80-009/3X-1:on 800208,steam Generator 3 Level Indication Became Erratic & Declared Inoperable.Caused by Barton Model 764 Transmitter Due to Design Problem in Foxboro Model 610A Power Supplies.Transmitter Replaced | Updated LER 80-009/3X-1:on 800208,steam Generator 3 Level Indication Became Erratic & Declared Inoperable.Caused by Barton Model 764 Transmitter Due to Design Problem in Foxboro Model 610A Power Supplies.Transmitter Replaced | |
| 05000316/LER-1980-010, Forwards LER 80-010/03L-0 | Forwards LER 80-010/03L-0 | |
| 05000316/LER-1980-010-03, /03L-0:on 800216,during Surveillance Test,Suction Valve VMO-102 for Containment Equalization Fan HV-CEQ-2 Failed to Open,Making Air Recirculation Sys Inoperable. Caused by Maladjusted Torque Switch in Motor Operator | /03L-0:on 800216,during Surveillance Test,Suction Valve VMO-102 for Containment Equalization Fan HV-CEQ-2 Failed to Open,Making Air Recirculation Sys Inoperable. Caused by Maladjusted Torque Switch in Motor Operator | |
| 05000315/LER-1980-010-03, /03L-0:on 800522,during Ice Condenser Insp,Eight Intermediate Deck Doors Were Found Frozen & Considered Inoperable Per Tech Spec.Caused by Condensation on Top Deck Door Divider Beam.Design Change Requested | /03L-0:on 800522,during Ice Condenser Insp,Eight Intermediate Deck Doors Were Found Frozen & Considered Inoperable Per Tech Spec.Caused by Condensation on Top Deck Door Divider Beam.Design Change Requested | |
| 05000315/LER-1980-010, Forwards LER 80-010/03L-0 | Forwards LER 80-010/03L-0 | |
| 05000315/LER-1980-011, Forwards LER 80-011/03L-0 | Forwards LER 80-011/03L-0 | |
| 05000315/LER-1980-011-03, /03L-0:on 800531,w/unit in Shutdown Mode, Containment Atmosphere Air Particulate & Gaseous Radiation Monitoring Sys Pump Tripped on Low Flow.Caused by Inaccurate Flowmeter.Flowmeter Replaced | /03L-0:on 800531,w/unit in Shutdown Mode, Containment Atmosphere Air Particulate & Gaseous Radiation Monitoring Sys Pump Tripped on Low Flow.Caused by Inaccurate Flowmeter.Flowmeter Replaced | |
| 05000316/LER-1980-011, Forwards LER 80-011/03L-0 | Forwards LER 80-011/03L-0 | |
| 05000316/LER-1980-011-03, /03L-0:on 800223,during Weekly Turbine Testing, Reduction in RCS Pressure Occurred.Pressure Dropped Below Min Tech Spec Limit.Caused by Tripped Supply Breakers Resulting in Inoperable Heaters.Breakers Reset | /03L-0:on 800223,during Weekly Turbine Testing, Reduction in RCS Pressure Occurred.Pressure Dropped Below Min Tech Spec Limit.Caused by Tripped Supply Breakers Resulting in Inoperable Heaters.Breakers Reset | |
| 05000315/LER-1980-012-03, /03L-0:on 800609,two Check valves,R-156 & R-157, Discovered Utilized as Containment Isolation Valves.Valves Were Not Included in Type C Leak Test Prior to Nov 1978. Type C Leak Test Performed & Check Valves Added | /03L-0:on 800609,two Check valves,R-156 & R-157, Discovered Utilized as Containment Isolation Valves.Valves Were Not Included in Type C Leak Test Prior to Nov 1978. Type C Leak Test Performed & Check Valves Added | |
| 05000316/LER-1980-012-03, /03L-0:on 800305,while Performing Surveillance Test,Steam Generator Water Level low-low Trip Bistable Found to Trip at 11:05% Narrow Range Instrument Span.Cause Unstated.Bistable Recalibr & Returned to Svc | /03L-0:on 800305,while Performing Surveillance Test,Steam Generator Water Level low-low Trip Bistable Found to Trip at 11:05% Narrow Range Instrument Span.Cause Unstated.Bistable Recalibr & Returned to Svc | |
| 05000316/LER-1980-012, Forwards LER 80-012/03L-0 | Forwards LER 80-012/03L-0 | |
| 05000316/LER-1980-013-03, /03L-0:on 800307,during Normal Operation,Circuit Breaker for R-11 & R-12 Sample Pump Tripped.Caused by Failure of Rubber Spider in Lovejoy L-100 Coupling.Complete Coupling Replaced & Air Sampler Tested | /03L-0:on 800307,during Normal Operation,Circuit Breaker for R-11 & R-12 Sample Pump Tripped.Caused by Failure of Rubber Spider in Lovejoy L-100 Coupling.Complete Coupling Replaced & Air Sampler Tested | |
| 05000315/LER-1980-013-03, /03L-0:on 800616,transmitter for Steam Generator Level Loop 4 (Blp 142) Found to Be Out of Spec Low.Cause Attributed to Instrument Drift.Transmitter,Barton Model 764 Recalibr & Returned to Svc | /03L-0:on 800616,transmitter for Steam Generator Level Loop 4 (Blp 142) Found to Be Out of Spec Low.Cause Attributed to Instrument Drift.Transmitter,Barton Model 764 Recalibr & Returned to Svc | |
| 05000315/LER-1980-014-03, /03L-0:on 800612,during Divider Barrier Seal Insp, Several Areas of Seal Found Cracked & Split.Cause of Seal Failure Unknown.Design Change Request Submitted to Investigate Alternate Matls | /03L-0:on 800612,during Divider Barrier Seal Insp, Several Areas of Seal Found Cracked & Split.Cause of Seal Failure Unknown.Design Change Request Submitted to Investigate Alternate Matls | |
| 05000316/LER-1980-014-03, /03L-0:on 800216,during Surveillance Test, Proximity Switch for D Main Turbine Stop Valve Fell Off Mounting Bracket.Caused by Threads in Mounting Bracket Being Stripped.Hole Retapped to Larger Size | /03L-0:on 800216,during Surveillance Test, Proximity Switch for D Main Turbine Stop Valve Fell Off Mounting Bracket.Caused by Threads in Mounting Bracket Being Stripped.Hole Retapped to Larger Size | |
| 05000315/LER-1980-015, Forwards LER 80-015/03L-0 | Forwards LER 80-015/03L-0 | |
| 05000316/LER-1980-015-03, /03L-0:on 800325,during Auxiliary Feed Pump Retest Auxiliary Feed Valve FMO-221 for Steam Generator 2 Did Not Operate.Caused by Armature Lead from Limitorque Valve Operator Being Pulled Out of Wire Lug.New Lug Crimped | /03L-0:on 800325,during Auxiliary Feed Pump Retest Auxiliary Feed Valve FMO-221 for Steam Generator 2 Did Not Operate.Caused by Armature Lead from Limitorque Valve Operator Being Pulled Out of Wire Lug.New Lug Crimped | |
| 05000316/LER-1980-015, Forwards LER 80-015/03L-0 | Forwards LER 80-015/03L-0 | |
| 05000315/LER-1980-015-03, /03L-0:on 800703,in Mode 6,train B Centrifugal Charging Pump Failed While Running Due to Broken Pump Shaft. Cause Unknown.Pump Rebuilt Using New Design Shaft | /03L-0:on 800703,in Mode 6,train B Centrifugal Charging Pump Failed While Running Due to Broken Pump Shaft. Cause Unknown.Pump Rebuilt Using New Design Shaft | |
| 05000315/LER-1980-016-03, /03L-0:on 800720,during Automatic Load Sequence Timing Relay Surveillance Test,Timer for 1E-MDAFP Exceeded Max Allowable Time.Caused by Instrument Drift.Timer Reset & Retested | /03L-0:on 800720,during Automatic Load Sequence Timing Relay Surveillance Test,Timer for 1E-MDAFP Exceeded Max Allowable Time.Caused by Instrument Drift.Timer Reset & Retested | |
| 05000315/LER-1980-016, Forwards LER 80-016/03L-0 | Forwards LER 80-016/03L-0 | |
