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| 05000219/LER-1978-001-03, /03L-0:on 780103,during Operability Test,Emergency Diesel Generator 1 Trouble Alarm Received & Unit Tripped. Caused by Temp Switch Being Erratic Re Setpoint.Switch Replaced.Louver Control Mod Being Installed | /03L-0:on 780103,during Operability Test,Emergency Diesel Generator 1 Trouble Alarm Received & Unit Tripped. Caused by Temp Switch Being Erratic Re Setpoint.Switch Replaced.Louver Control Mod Being Installed | |
| 05000219/LER-1978-017-03, /03L-0:on 780914,circuit Breaker for motor- Operated Valve Tripped When Valve Closed by Isolation Signal.Caused by Component Failure Allowing Switch Setting to Shift.Setting Corrected & Set Screw Tightened | /03L-0:on 780914,circuit Breaker for motor- Operated Valve Tripped When Valve Closed by Isolation Signal.Caused by Component Failure Allowing Switch Setting to Shift.Setting Corrected & Set Screw Tightened | |
| 05000219/LER-1978-017, Forwards LER 78-017/03L-0 | Forwards LER 78-017/03L-0 | |
| 05000219/LER-1978-018-01, /01T-0 on 780916:3 MSIVs(NS03A,NS04A,NS04B) Had Leakage Rates in Excess of Maximum Allowable Due to Stem Packing,Cracked Stellite Weld & Failure of Main Poppet to Seat Properly.Msiv Failures Being Investigated | /01T-0 on 780916:3 MSIVs(NS03A,NS04A,NS04B) Had Leakage Rates in Excess of Maximum Allowable Due to Stem Packing,Cracked Stellite Weld & Failure of Main Poppet to Seat Properly.Msiv Failures Being Investigated | |
| 05000219/LER-1978-018, Forwards LER 78-018/01T-0 | Forwards LER 78-018/01T-0 | |
| 05000219/LER-1978-020, Forwards LER 78-020/03L-1 | Forwards LER 78-020/03L-1 | |
| 05000219/LER-1978-020-03, /03L-1 on 780917:intermidiate Range Monitor (IRM) Channel 17 Failed Downscale While Channel 16 Was Already Inoperable.Caused by Repairman Inadvertently Pulling IRM 17 Wiring Out of Its Connector | /03L-1 on 780917:intermidiate Range Monitor (IRM) Channel 17 Failed Downscale While Channel 16 Was Already Inoperable.Caused by Repairman Inadvertently Pulling IRM 17 Wiring Out of Its Connector | |
| 05000219/LER-1978-021, Forwards LER 78-021/01T-0 | Forwards LER 78-021/01T-0 | |
| 05000219/LER-1978-021-01, /01T-0 on 781010:while Performing Inservice Insp, Discovered Through Wall Crack on Sparger Pipe.Caused by Methods Used to Install Sparger Pipe.Corrective Action Will Be Determined After Full Investigation | /01T-0 on 781010:while Performing Inservice Insp, Discovered Through Wall Crack on Sparger Pipe.Caused by Methods Used to Install Sparger Pipe.Corrective Action Will Be Determined After Full Investigation | |
| 05000219/LER-1978-022-03, /03L-0 on 781017:during Routine Surveillance Test of Standby Gas Treatment Sys,The Sys II Discharge Valve Failed to Open,Due to Stuck Solenoid in Control Air Supply to Operator for V-28-30 | /03L-0 on 781017:during Routine Surveillance Test of Standby Gas Treatment Sys,The Sys II Discharge Valve Failed to Open,Due to Stuck Solenoid in Control Air Supply to Operator for V-28-30 | |
| 05000219/LER-1978-023, Forwards LER 78-023/03L-0 | Forwards LER 78-023/03L-0 | |
| 05000219/LER-1978-023-03, /03L-0 on 781019:IRM 12 Became Inoperative While Cable to IRM 14 Was Disconnected.Irm 12 Failure Attributed to Maint Activities Under Vessel.Subesquent Inspec Showed IRM 12 Cable Damaged | /03L-0 on 781019:IRM 12 Became Inoperative While Cable to IRM 14 Was Disconnected.Irm 12 Failure Attributed to Maint Activities Under Vessel.Subesquent Inspec Showed IRM 12 Cable Damaged | |
| 05000219/LER-1978-024-03, /03L-0 on 781018:isolation Valve V-7-31 Had Damaged Rubber Seat & Drain Valve V-7-29 Obstructed by Piece of Cork & Filter F-1-58 Medium Disintegrated.Cause of V-7-31 & F-7-58 Degradations Due to Detonations in Sys | /03L-0 on 781018:isolation Valve V-7-31 Had Damaged Rubber Seat & Drain Valve V-7-29 Obstructed by Piece of Cork & Filter F-1-58 Medium Disintegrated.Cause of V-7-31 & F-7-58 Degradations Due to Detonations in Sys | |
| 05000219/LER-1978-024, Forwards LER 78-024/03L-0 | Forwards LER 78-024/03L-0 | |
| 05000219/LER-1978-025-03, /03L-0 on 781031:condensate Storage Tank Was Leaking Due to Galvanic Corrosion.Leak & Other Weak Spots Were Patch Welded | /03L-0 on 781031:condensate Storage Tank Was Leaking Due to Galvanic Corrosion.Leak & Other Weak Spots Were Patch Welded | |
| 05000219/LER-1978-025, Forwards LER 78-025/03L-0 | Forwards LER 78-025/03L-0 | |
| 05000219/LER-1978-026, Forwards LER 78-026/01T-0 | Forwards LER 78-026/01T-0 | |
| 05000219/LER-1978-026-01, /01T-0:on 781121 torus-to-reactor Bldg Differential Pressure Switches DPS-66A & B Had Ruptured Diaphragms.Caused by Excessive Differential Pressure | /01T-0:on 781121 torus-to-reactor Bldg Differential Pressure Switches DPS-66A & B Had Ruptured Diaphragms.Caused by Excessive Differential Pressure | |
| 05000219/LER-1978-027, Forwards LER 78-027/03L-0 | Forwards LER 78-027/03L-0 | |
| 05000219/LER-1978-027-03, /03L-0 on 781125:switch RE03C Was Found to Trip at Pressure Less conservative(1075 Psig)Than Specified in Tech Specs 2.3.3.Cause of Pressure Switch Tripping Is Attributed to Sensor Repeatability | /03L-0 on 781125:switch RE03C Was Found to Trip at Pressure Less conservative(1075 Psig)Than Specified in Tech Specs 2.3.3.Cause of Pressure Switch Tripping Is Attributed to Sensor Repeatability | |
| 05000219/LER-1978-028, Forwards LER 78-028/01T-0 | Forwards LER 78-028/01T-0 | |
| 05000219/LER-1978-028-01, /01T-0 on 781129:during Test,Main Steam Line Drain Valve V-1-106 Did Not Close 2 Incore Probes,Did Not Fully W/Draw & Reactor Coolant Valve Did Not Indicate Closed.Due to Jammed Armature,Faulty Fuse Holder & Incorrect Settin | /01T-0 on 781129:during Test,Main Steam Line Drain Valve V-1-106 Did Not Close 2 Incore Probes,Did Not Fully W/Draw & Reactor Coolant Valve Did Not Indicate Closed.Due to Jammed Armature,Faulty Fuse Holder & Incorrect Settings | |
| 05000219/LER-1978-029-01, /01T-0 on 781129:during Test,Noted That Containment Leakage Rate Greater than Allowable.Discovered That Vent Valves Were Leaking.Caused by Leakage Past the Seating Surfaces | /01T-0 on 781129:during Test,Noted That Containment Leakage Rate Greater than Allowable.Discovered That Vent Valves Were Leaking.Caused by Leakage Past the Seating Surfaces | |
| 05000219/LER-1978-029, Forwards LER 78-029/01T-0 | Forwards LER 78-029/01T-0 | |
| 05000219/LER-1978-030, Forwards LER 78-030/03L-0 | Forwards LER 78-030/03L-0 | |
| 05000219/LER-1978-030-03, /03L-0 on 781126:during Testing Containment Spray Pumps 51C & 51A Failed to Start on Signal Due to Excess Friction in Circuit Breaker Trip Bar Bearings.Bearings Were Cleaned & Lubricated | /03L-0 on 781126:during Testing Containment Spray Pumps 51C & 51A Failed to Start on Signal Due to Excess Friction in Circuit Breaker Trip Bar Bearings.Bearings Were Cleaned & Lubricated | |
| 05000219/LER-1978-031, Forwards LER 78-031/03L-0 | Forwards LER 78-031/03L-0 | |
| 05000219/LER-1978-031-03, /03L-0 on 781130:during Diesel Generator Automatic Actuation Test,Generator Failed to Excite Due to Unused Target Mechanical Linkage Binding.Svc Water Pumps 1 & 2 Did Not Start Due to Binding in Trip Mechanism | /03L-0 on 781130:during Diesel Generator Automatic Actuation Test,Generator Failed to Excite Due to Unused Target Mechanical Linkage Binding.Svc Water Pumps 1 & 2 Did Not Start Due to Binding in Trip Mechanism | |
| 05000219/LER-1978-032-03, /03L-0 on 781204:during Refueling Operations & Containment Spray Sys 1 Automatic Actuation Test,Valve V-21-78 Failed to Open.Caused by Valve Motor Breaker Not Racked Properly & Overload in Trip Position | /03L-0 on 781204:during Refueling Operations & Containment Spray Sys 1 Automatic Actuation Test,Valve V-21-78 Failed to Open.Caused by Valve Motor Breaker Not Racked Properly & Overload in Trip Position | |
| 05000219/LER-1978-032, Forwards LER 78-032/03L-0 | Forwards LER 78-032/03L-0 | |
| 05000219/LER-1978-033-01, /01T-2 on 781214:reactor Scram Occurred in Range 1 of Intermediate Range Monitors Due to Failure of Emergency Rod in Control Switch.Caused by Bent Switch Stop.Stop Plate Replaced | /01T-2 on 781214:reactor Scram Occurred in Range 1 of Intermediate Range Monitors Due to Failure of Emergency Rod in Control Switch.Caused by Bent Switch Stop.Stop Plate Replaced | |
| 05000219/LER-1978-033, Forwards LER 78-033/01T-2 | Forwards LER 78-033/01T-2 | |
| 05000219/LER-1978-034-03, /03L-0 781213:both Diesel Generator & Station Batteries Were Not Tested & Monitored within Specified Time Interval.Caused by Failure to Adhere to Surveillance Schedule | /03L-0 781213:both Diesel Generator & Station Batteries Were Not Tested & Monitored within Specified Time Interval.Caused by Failure to Adhere to Surveillance Schedule | |
| 05000219/LER-1978-034, Forwards LER 78-034/03L-0 | Forwards LER 78-034/03L-0 | |
| 05000219/LER-1978-035-01, /01T-0 on 781227:torus Water Temp in Excess of Tech Specs.Caused by Failure of Operations Personnel to Recognize Torus Water Temp Nearing Tech Spec Limit | /01T-0 on 781227:torus Water Temp in Excess of Tech Specs.Caused by Failure of Operations Personnel to Recognize Torus Water Temp Nearing Tech Spec Limit | |
| 05000219/LER-1978-035, Forwards LER 78-035/01T-0 | Forwards LER 78-035/01T-0 | |
| 05000219/LER-1978-036-03, /03L-0 on 781212:during Routine Tests,Standby Gas Treatment Sys II Discharge Valve V-28-30 Failed to Close. Caused by Buildup of Dirt & Corrosion in Piston Cylinder of Valve Operator | /03L-0 on 781212:during Routine Tests,Standby Gas Treatment Sys II Discharge Valve V-28-30 Failed to Close. Caused by Buildup of Dirt & Corrosion in Piston Cylinder of Valve Operator | |
| 05000219/LER-1978-036, Forwards LER 78-036/03L-0 | Forwards LER 78-036/03L-0 | |