05000237/LER-1983-001-03, /03L-0:on 830101,cracked Weld Discovered at Feedwater Heater 2D2 Emergency Spill to Normal Drain Line Connector.Caused by Excessive Movement of Drain Line.Weld Will Be Repaired During Upcoming Refueling Outage | /03L-0:on 830101,cracked Weld Discovered at Feedwater Heater 2D2 Emergency Spill to Normal Drain Line Connector.Caused by Excessive Movement of Drain Line.Weld Will Be Repaired During Upcoming Refueling Outage | |
05000237/LER-1983-001, Forwards LER 83-001/03L-0 | Forwards LER 83-001/03L-0 | |
05000249/LER-1983-001-03, /03L-0:on 830104,source Range Monitor 24 High Rod Block Found in Excess of Tech Spec.Caused by Setpoint Drift. Monitor Readjusted & Returned to Svc | /03L-0:on 830104,source Range Monitor 24 High Rod Block Found in Excess of Tech Spec.Caused by Setpoint Drift. Monitor Readjusted & Returned to Svc | |
05000249/LER-1983-001, Forwards LER 83-001/03L-0 | Forwards LER 83-001/03L-0 | |
05000249/LER-1983-002-01, /01T-0:on 830105,leakage from RWCU Test Tap Valve 3-1299-13 Occurred.Caused by Seat Damage of Valve.Valve Replaced During 1983 Refueling Outage | /01T-0:on 830105,leakage from RWCU Test Tap Valve 3-1299-13 Occurred.Caused by Seat Damage of Valve.Valve Replaced During 1983 Refueling Outage | |
05000249/LER-1983-002, Forwards LER 83-002/01T-0 | Forwards LER 83-002/01T-0 | |
05000237/LER-1983-002, Forwards Updated LER 83-002/03X-1 | Forwards Updated LER 83-002/03X-1 | |
05000237/LER-1983-002-03, Valve Mo 2-1501-19A Failed to Close During Test.Caused by Loose Wire 19A-CR109CO in Combination Starter.Terminal Tightened & Valve Successfully Cycled from Control Room | Valve Mo 2-1501-19A Failed to Close During Test.Caused by Loose Wire 19A-CR109CO in Combination Starter.Terminal Tightened & Valve Successfully Cycled from Control Room | |
05000237/LER-1983-003-03, /03L-0:on 830108,during Surveillances Dis 1400-5 & DOS 6600-1,diesel Generator Low Water Pressure Alarm Received.Caused by Bad Low Cooling Water Pressure Switch. Switch Replaced W/Class 9012 Type GAW-5 | /03L-0:on 830108,during Surveillances Dis 1400-5 & DOS 6600-1,diesel Generator Low Water Pressure Alarm Received.Caused by Bad Low Cooling Water Pressure Switch. Switch Replaced W/Class 9012 Type GAW-5 | |
05000237/LER-1983-003, Forwards LER 83-003/03L-0 | Forwards LER 83-003/03L-0 | |
05000249/LER-1983-003, Forwards LER 83-003/03L-0 | Forwards LER 83-003/03L-0 | |
05000249/LER-1983-003-03, /03L-0:on 830105,pinhole Leak Found on Connecting Pipe Weld Between 3-1201-10 Inch a & 3-1292-2 Inch a Line. Cause Undetermined.Leak Will Be Repaired During Next Outage of Sufficient Length | /03L-0:on 830105,pinhole Leak Found on Connecting Pipe Weld Between 3-1201-10 Inch a & 3-1292-2 Inch a Line. Cause Undetermined.Leak Will Be Repaired During Next Outage of Sufficient Length | |
05000237/LER-1983-004, Forwards LER 83-004/03L-0 | Forwards LER 83-004/03L-0 | |
05000237/LER-1983-004-03, /03L-0:on 830113,during Core Unloading Operations, Grapple Control Rod Interlock Would Intermittently Clear While Grapple Was Over Core.Caused by Grapple Not Maintaining Full Contact W/Rail.Limit Switch Adjusted | /03L-0:on 830113,during Core Unloading Operations, Grapple Control Rod Interlock Would Intermittently Clear While Grapple Was Over Core.Caused by Grapple Not Maintaining Full Contact W/Rail.Limit Switch Adjusted | |
05000249/LER-1983-004, Forwards LER 83-004/03L-0 | Forwards LER 83-004/03L-0 | |
05000249/LER-1983-004-03, /03L-0:on 830204,while Disc Operations Sys 1600-1 Valve Timing Test in progress,MO-3-1301-3 Failed to Open. Caused by Valve Disc Wedged Too Tightly Against Seat.Valve Cycled from Control & Successfully Timed | /03L-0:on 830204,while Disc Operations Sys 1600-1 Valve Timing Test in progress,MO-3-1301-3 Failed to Open. Caused by Valve Disc Wedged Too Tightly Against Seat.Valve Cycled from Control & Successfully Timed | |
05000237/LER-1983-005, Forwards LER 83-005/03L-0 | Forwards LER 83-005/03L-0 | |
05000237/LER-1983-005-03, /03L-0:on 830112,during Refueling Outage,While Local Leak Rate Testing,Outboard MSIV 2-203-2B Leaking in Excess of Tech Specs.Caused by Valve Packing Leakage.Packing Tightened | /03L-0:on 830112,during Refueling Outage,While Local Leak Rate Testing,Outboard MSIV 2-203-2B Leaking in Excess of Tech Specs.Caused by Valve Packing Leakage.Packing Tightened | |
05000249/LER-1983-005, Forwards LER 83-005/01T-0 | Forwards LER 83-005/01T-0 | |
05000249/LER-1983-005-01, /01T-0:on 830208,diesel Generator Failed to Start. Caused by Failure of Air Starter Motor Vanes to Engage. Ingersoll-Rand Air Starter Motors,Air Filter & Air Regulating Valve Replaced | /01T-0:on 830208,diesel Generator Failed to Start. Caused by Failure of Air Starter Motor Vanes to Engage. Ingersoll-Rand Air Starter Motors,Air Filter & Air Regulating Valve Replaced | |
05000249/LER-1983-006, Forwards LER 83-006/01T-0 | Forwards LER 83-006/01T-0 | |
05000249/LER-1983-006-01, /01T-0:on 830208,LPCI Pump Suction Valve M03-1501-5D Failed Open.Caused by Auxiliary Contact CR 105X Failure in Control Circuitry of Valve.Contact Replaced | /01T-0:on 830208,LPCI Pump Suction Valve M03-1501-5D Failed Open.Caused by Auxiliary Contact CR 105X Failure in Control Circuitry of Valve.Contact Replaced | |
05000249/LER-1983-006-03, /03L-0:on 830208,while Performing DOS 1500-1 (LPCI Valve Operability Test),Torus Spray Isolation Valve MO3-1501-18A Failed in Open Position.Caused by Auxiliary Contact in Control Circuitry of Valve.Contact Replaced | /03L-0:on 830208,while Performing DOS 1500-1 (LPCI Valve Operability Test),Torus Spray Isolation Valve MO3-1501-18A Failed in Open Position.Caused by Auxiliary Contact in Control Circuitry of Valve.Contact Replaced | |
05000237/LER-1983-007-03, /03L-0:on 830117,0305 & 0220,excessive Leakage Discovered Through Bypass Valves 1600-61,1601-23 & 1601-60, Respectively.Cause Not Stated.Valves Will Be Repaired & Vol Tested | /03L-0:on 830117,0305 & 0220,excessive Leakage Discovered Through Bypass Valves 1600-61,1601-23 & 1601-60, Respectively.Cause Not Stated.Valves Will Be Repaired & Vol Tested | |
05000237/LER-1983-007, Forwards LER 83-007/03L-0 | Forwards LER 83-007/03L-0 | |
05000237/LER-1983-008, Forwards LER 83-008/01T-0 | Forwards LER 83-008/01T-0 | |
05000249/LER-1983-008, Forwards LER 83-008/01T-0 | Forwards LER 83-008/01T-0 | |
05000249/LER-1983-008-01, /01T-0:on 830212,during Normal Operations,Core Spray Pump 1401-3A Failed to Start During Test.Caused by Circuit Breaker Recharging Motor Toggle Switch Inadvertently Left in Off Position.Switch Changed to on Position | /01T-0:on 830212,during Normal Operations,Core Spray Pump 1401-3A Failed to Start During Test.Caused by Circuit Breaker Recharging Motor Toggle Switch Inadvertently Left in Off Position.Switch Changed to on Position | |
05000237/LER-1983-008-01, /01T-0:on 830115,during Inservice Insp,Ultrasonic Exam of Recirculation Suction Line B safe-end to Elbow Weld Detected Rejectable Indication at Weld Root.Cause Unknown. Investigation Underway | /01T-0:on 830115,during Inservice Insp,Ultrasonic Exam of Recirculation Suction Line B safe-end to Elbow Weld Detected Rejectable Indication at Weld Root.Cause Unknown. Investigation Underway | |
05000249/LER-1983-009, Forwards LER 83-009/03L-0.Detailed Event Analysis Encl | Forwards LER 83-009/03L-0.Detailed Event Analysis Encl | |
05000249/LER-1983-009-03, /03L-0:on 830307,steam Leak on Shell of 3C3 Low Pressure Feedwater Heater Found Near Extraction Steam Inlet Nozzle.Caused by Heater Shell Erosion by Deflected Extraction Steam.Eroded Area Cut Out & Replaced | /03L-0:on 830307,steam Leak on Shell of 3C3 Low Pressure Feedwater Heater Found Near Extraction Steam Inlet Nozzle.Caused by Heater Shell Erosion by Deflected Extraction Steam.Eroded Area Cut Out & Replaced | |
05000237/LER-1983-009-03, /03L-0:on 830113,during Refuel Surveillance Dis 2300-7,HPCI Switch 2370A Tripped at 204.7 F,Exceeding Tech Specs.Caused by Switch Setpoint Drift.Setpoint Adjusted.Switches Calibr During Refueling Outages | /03L-0:on 830113,during Refuel Surveillance Dis 2300-7,HPCI Switch 2370A Tripped at 204.7 F,Exceeding Tech Specs.Caused by Switch Setpoint Drift.Setpoint Adjusted.Switches Calibr During Refueling Outages | |
05000237/LER-1983-009, Forwards LER 83-009/03L-0 | Forwards LER 83-009/03L-0 | |
05000237/LER-1983-010, Forwards LER 83-010/03L-0 | Forwards LER 83-010/03L-0 | |
05000237/LER-1983-010-03, /03L-0:on 830129,during Refueling Outage,Turbine Exhaust Pressure Switch 2368B Tripped & Did Not Pickup Designated Relay.Caused by Inadvertent Wiring Error at Junction Box 2202-29 TB2.Box Rewired.Sys Tested | /03L-0:on 830129,during Refueling Outage,Turbine Exhaust Pressure Switch 2368B Tripped & Did Not Pickup Designated Relay.Caused by Inadvertent Wiring Error at Junction Box 2202-29 TB2.Box Rewired.Sys Tested | |
05000249/LER-1983-010-03, /03L-0:on 830312 & 18,during Normal Operation, Drywell & Torus Oxygen Indication Slowly Drifted Up on All Points.Caused by Faulty Oven Temp Switch in Oxygen Analyzer. Switch Replaced | /03L-0:on 830312 & 18,during Normal Operation, Drywell & Torus Oxygen Indication Slowly Drifted Up on All Points.Caused by Faulty Oven Temp Switch in Oxygen Analyzer. Switch Replaced | |
05000249/LER-1983-010, Forwards LER 83-010/03L-0 | Forwards LER 83-010/03L-0 | |
05000237/LER-1983-011, Forwards LER 83-011/01T-0 | Forwards LER 83-011/01T-0 | |
05000237/LER-1983-011-01, /01T-0:on 830203,during Refueling Outage, Nondestructive Test on New Fillet Weld Discovered Crack Between Torus Shell & Ring Girder Separating Bays 8 & 9. Cause Unknown.Investigation Underway | /01T-0:on 830203,during Refueling Outage, Nondestructive Test on New Fillet Weld Discovered Crack Between Torus Shell & Ring Girder Separating Bays 8 & 9. Cause Unknown.Investigation Underway | |
05000249/LER-1983-011, Forwards LER 83-011/01T-0 | Forwards LER 83-011/01T-0 | |
05000249/LER-1983-011-01, /01T-0:on 830314,LPCI Pump Suction Valve MO3-1501-5A Failed to Close.Caused by Mechanical Overload Which Broke Manual Operator Housing.Cause of Overload Undetermined.Valve Motor & Manual Operator Housing Replaced | /01T-0:on 830314,LPCI Pump Suction Valve MO3-1501-5A Failed to Close.Caused by Mechanical Overload Which Broke Manual Operator Housing.Cause of Overload Undetermined.Valve Motor & Manual Operator Housing Replaced | |
05000237/LER-1983-012, Forwards LER 83-012/01T-0 | Forwards LER 83-012/01T-0 | |
05000237/LER-1983-012-01, /01T-0:on 830210,main Steam Line Mechanical Snubbers 50,51,46,53 & 44 Found Inoperable.Caused by Dynamic Overload of Snubbers.Future Corrective Action Will Be Determined Based on Results of Current Investigation | /01T-0:on 830210,main Steam Line Mechanical Snubbers 50,51,46,53 & 44 Found Inoperable.Caused by Dynamic Overload of Snubbers.Future Corrective Action Will Be Determined Based on Results of Current Investigation | |
05000249/LER-1983-013-03, /03L-0:on 830322,while Performing Main Steam Line High Flow Surveillance,Switch 3-261-21 Tripped Beyond Tech Spec Limit.Caused by Particle on Switch Gear Movement.Switch Cleaned & Retested | /03L-0:on 830322,while Performing Main Steam Line High Flow Surveillance,Switch 3-261-21 Tripped Beyond Tech Spec Limit.Caused by Particle on Switch Gear Movement.Switch Cleaned & Retested | |
05000237/LER-1983-013-03, Power Lead from Welding Machine Became Disconnected & Grounded to Torus Base Metal Causing Arc Strike Which Fused Copper/Brass Into Metal. Cause Considered Accident | Power Lead from Welding Machine Became Disconnected & Grounded to Torus Base Metal Causing Arc Strike Which Fused Copper/Brass Into Metal. Cause Considered Accident | |
05000237/LER-1983-013, Forwards LER 83-013/03L-0 | Forwards LER 83-013/03L-0 | |
05000249/LER-1983-013, Forwards LER 83-013/03L-0 | Forwards LER 83-013/03L-0 | |
05000237/LER-1983-014, Forwards LER 83-014/03L-0 | Forwards LER 83-014/03L-0 | |
05000237/LER-1983-014-03, /03L-0:on 830222,during Refueling Outage,Time Recorded for Offgas Discharge Valve A02-5406 to Fully Close Exceeded 15 Minute Tech Spec Limit.Cause Unknown.Timer Readjusted.Valve Timed to Close at 14 minutes,16 | /03L-0:on 830222,during Refueling Outage,Time Recorded for Offgas Discharge Valve A02-5406 to Fully Close Exceeded 15 Minute Tech Spec Limit.Cause Unknown.Timer Readjusted.Valve Timed to Close at 14 minutes,16 | |
05000249/LER-1983-014-03, /03L-0:on 830405,main Steam Line Log Radiation Monitor 3A Experienced Loss of High Voltage Power Causing Monitor to Go Downscale.Caused by Burned Out Resistor on High Voltage Power Supply.Monitor 3A Replaced | /03L-0:on 830405,main Steam Line Log Radiation Monitor 3A Experienced Loss of High Voltage Power Causing Monitor to Go Downscale.Caused by Burned Out Resistor on High Voltage Power Supply.Monitor 3A Replaced | |