| | | Reporting criterion |
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| 05000271/LER-1978-009, Forwards LER 78-009/03L-0 | Forwards LER 78-009/03L-0 | |
| 05000171/LER-1978-011-04, /04T-0 on 780223:approx 40 Gallons Light Diesel Fuel Oil Drained Into Discharge Canal.Caused by Valve Left Open After Use.Spillage Stopped Upon Discovery,Cleanup Initiated & Valve Locked to Control Use | /04T-0 on 780223:approx 40 Gallons Light Diesel Fuel Oil Drained Into Discharge Canal.Caused by Valve Left Open After Use.Spillage Stopped Upon Discovery,Cleanup Initiated & Valve Locked to Control Use | |
| 05000171/LER-1978-011, Forwards LER 78-011/04T-0 | Forwards LER 78-011/04T-0 | |
| 05000278/LER-1978-014-03, /03L-0:on 780626,at Power Operation,Shutoff Valve on Pressure Switch Found Closed.Caused by Closure During 780621 Testing.Valve Reopened & Valving for Safety Instrumentation Checked | /03L-0:on 780626,at Power Operation,Shutoff Valve on Pressure Switch Found Closed.Caused by Closure During 780621 Testing.Valve Reopened & Valving for Safety Instrumentation Checked | |
| 05000278/LER-1978-016-03, /03L-0 on 780904:during Surveillance Test Unit 3 Dmain Steam Radiat Monitor Failed to Cause a Half Scram Due to Defective Transistor.Transitor Was Replaced & Monitor Returned to Svc in 6 Hours | /03L-0 on 780904:during Surveillance Test Unit 3 Dmain Steam Radiat Monitor Failed to Cause a Half Scram Due to Defective Transistor.Transitor Was Replaced & Monitor Returned to Svc in 6 Hours | |
| 05000278/LER-1978-019-01, /01T-0:on 780929,quantity of Activity in Purge Stream of Offgas Sample Underestimated,Resulting in Three Peaks Exceeding Tech Specs.Purging of Offgas Directly Into Vent Sys During Offgas Process Halted | /01T-0:on 780929,quantity of Activity in Purge Stream of Offgas Sample Underestimated,Resulting in Three Peaks Exceeding Tech Specs.Purging of Offgas Directly Into Vent Sys During Offgas Process Halted | |
| 05000278/LER-1978-019, Forwards LER 78-019/01T-0 | Forwards LER 78-019/01T-0 | |
| 05000277/LER-1978-020-01, /01T-0 on 781019:unit 3 Containment Oxygen Concentration Had Increased to 0.1% Above 4 Percent Limit of Tech Spec 3.7.A.5.Caused by Open Air back-up Valves in Inoperable Instru Nitrogen Compressor | /01T-0 on 781019:unit 3 Containment Oxygen Concentration Had Increased to 0.1% Above 4 Percent Limit of Tech Spec 3.7.A.5.Caused by Open Air back-up Valves in Inoperable Instru Nitrogen Compressor | |
| 05000277/LER-1978-020, Forwards LER 78-020/01T-0 | Forwards LER 78-020/01T-0 | |
| 05000278/LER-1978-021-01, /01T-0 on 781106:while at Pwr Feedwater Control Sys Failure Resulted in Reactor Low Level Transient & Scram HPCI Initiated But Delivered Unstable Flow & Soon Tripped on Overspeed.Cause Was HPCI Governor Being Out of Calibr | /01T-0 on 781106:while at Pwr Feedwater Control Sys Failure Resulted in Reactor Low Level Transient & Scram HPCI Initiated But Delivered Unstable Flow & Soon Tripped on Overspeed.Cause Was HPCI Governor Being Out of Calibr | |
| 05000278/LER-1978-021, Forwards LER 78-021/01T-0 | Forwards LER 78-021/01T-0 | |
| 05000278/LER-1978-023-03, /03L-0 on 781127:D Reactor Bldg Area Exhaust Radiat Monitor Indicated Downscale & Was Determined to Be Inoperable.Caused by Defective Zener Diode in Amplifier of GE sensor-converter Unit,Model 194X927011 | /03L-0 on 781127:D Reactor Bldg Area Exhaust Radiat Monitor Indicated Downscale & Was Determined to Be Inoperable.Caused by Defective Zener Diode in Amplifier of GE sensor-converter Unit,Model 194X927011 | |
| 05000278/LER-1978-024-03, /03L-0 on 781212:reactor Core Isolation Cooling Valve Mo-13-15 Failed to Close During Surveillance Test 6.11.Caused by Cocked Packing Follower Jamming Valve Stem | /03L-0 on 781212:reactor Core Isolation Cooling Valve Mo-13-15 Failed to Close During Surveillance Test 6.11.Caused by Cocked Packing Follower Jamming Valve Stem | |
| 05000277/LER-1978-035-03, /03l-0 on 780830:E-3 Diesel Start Time to Reach Rated Voltage & Frequency Did Not Meet Surveillance Test Requirement,Probably Caused by Leaking Check Valve in the Hydraulic Sys Assoc W/The Air Booster Relay | /03l-0 on 780830:E-3 Diesel Start Time to Reach Rated Voltage & Frequency Did Not Meet Surveillance Test Requirement,Probably Caused by Leaking Check Valve in the Hydraulic Sys Assoc W/The Air Booster Relay | |
| 05000277/LER-1978-036-03, /03L-0 on 780901:failure of Auxiliary Oil Pump to Start Due to a Ground in Motor.Motor,Baldor Type 1040D, 7 1/2 H.P.,25OV.D.C. Was Replaced & HPCI Sys Tested Satisfactorily W/In 36 Hours.Ads Timers Not W/In Tech Specs | /03L-0 on 780901:failure of Auxiliary Oil Pump to Start Due to a Ground in Motor.Motor,Baldor Type 1040D, 7 1/2 H.P.,25OV.D.C. Was Replaced & HPCI Sys Tested Satisfactorily W/In 36 Hours.Ads Timers Not W/In Tech Specs | |
| 05000277/LER-1978-037-03, /03L-0 on 780901:while Testing ADS Subsys,Timers on Both Loops Were Found Outside the 115-125 Second Limit of Tech Specs Due to Setpoint Drift of Time Delay Relays. Timers Were Calibrated,Retested & Returned to Svc | /03L-0 on 780901:while Testing ADS Subsys,Timers on Both Loops Were Found Outside the 115-125 Second Limit of Tech Specs Due to Setpoint Drift of Time Delay Relays. Timers Were Calibrated,Retested & Returned to Svc | |
| 05000277/LER-1978-038, Forwards LER 78-038/01T-0 | Forwards LER 78-038/01T-0 | |
| 05000277/LER-1978-038-01, /01T-0 on 780908:one Point on Piping Outboard MO-12-15 Had Stress During DBE Above Code Allowable. Restraint to Be Added to Code | /01T-0 on 780908:one Point on Piping Outboard MO-12-15 Had Stress During DBE Above Code Allowable. Restraint to Be Added to Code | |
| 05000277/LER-1978-039, Forwards LER 78-039/03L-0 | Forwards LER 78-039/03L-0 | |
| 05000277/LER-1978-039-03, /03L-0 on 780904:backflow of Radioactive Liquid from Radwaste Demineralizers to Svc Air Sys Discovered on 780904 & 780921.Caused by Leaking Process Valves & Associated Check Vlaves Due to Dirt Deposits | /03L-0 on 780904:backflow of Radioactive Liquid from Radwaste Demineralizers to Svc Air Sys Discovered on 780904 & 780921.Caused by Leaking Process Valves & Associated Check Vlaves Due to Dirt Deposits | |
| 05000277/LER-1978-041, Forwards LER 78-041/01T-0 | Forwards LER 78-041/01T-0 | |
| 05000277/LER-1978-041-01, /01T-0 on 781010:2 4KV Emergency Bus Sequential Loading Relays Found Outside Tech Spec Limits.Caused by Error in Determining Setpoint & Calibr Span of Relays.Relays Recalib & Testing Procedures Revised | /01T-0 on 781010:2 4KV Emergency Bus Sequential Loading Relays Found Outside Tech Spec Limits.Caused by Error in Determining Setpoint & Calibr Span of Relays.Relays Recalib & Testing Procedures Revised | |
| 05000277/LER-1978-042-03, /03L-0 on 781019:during start-up,inboard Main Steam Line Drain Isolation Valve MO-2-74 Would Not Close in Response to Hand Switch in Control Room,Due to Defective Limitorque SMB-000 Torque Switch on the Valve | /03L-0 on 781019:during start-up,inboard Main Steam Line Drain Isolation Valve MO-2-74 Would Not Close in Response to Hand Switch in Control Room,Due to Defective Limitorque SMB-000 Torque Switch on the Valve | |
| 05000277/LER-1978-043-03, /03L-0 on 781019:snubber 23HBS-38 Found W/Unacceptable Bleed Rates & Locking Velocities.Caused by Clogged Bleed Orifices & Low Ambient Temp During Tests. Safety-related Snubbers Tested,Repaired & Recalib | /03L-0 on 781019:snubber 23HBS-38 Found W/Unacceptable Bleed Rates & Locking Velocities.Caused by Clogged Bleed Orifices & Low Ambient Temp During Tests. Safety-related Snubbers Tested,Repaired & Recalib | |
| 05000277/LER-1978-043, Forwards LER 78-043/03L-0 | Forwards LER 78-043/03L-0 | |
| 05000277/LER-1978-044-03, /03L-0 on 781021:during Startup,Excessive Oper of HPCI Gland Seal Condensate Pump Was Noted.Check Valve 2-23-131 Was Leaking Which Let Condensate Return to Gland Seal Condenser.Valves Were Blocked to Facilitate Repair | /03L-0 on 781021:during Startup,Excessive Oper of HPCI Gland Seal Condensate Pump Was Noted.Check Valve 2-23-131 Was Leaking Which Let Condensate Return to Gland Seal Condenser.Valves Were Blocked to Facilitate Repair | |
| 05000277/LER-1978-046-03, /03L-0 on 781117:output Demand Signal from RCIC Flow Controller (Inst HCS213-115) Read Down Scale.Caused by Open Circuit in Controller Demand Current Loop | /03L-0 on 781117:output Demand Signal from RCIC Flow Controller (Inst HCS213-115) Read Down Scale.Caused by Open Circuit in Controller Demand Current Loop | |
| 05000277/LER-1978-047-03, /03L-0 on 781102:during Third Refueling Outage, Failed to Remove Neutron Flux Samples from Reactor Vessel. Caused by Administrative Oversight.Eval of Sample Removal Prog Is in Progress | /03L-0 on 781102:during Third Refueling Outage, Failed to Remove Neutron Flux Samples from Reactor Vessel. Caused by Administrative Oversight.Eval of Sample Removal Prog Is in Progress | |
| 05000277/LER-1978-048-03, /03L-0 on 781204:surveillance Test Revealed Failure of a Channel Main Steam Line High Flow Circuitry in Primary Containment Isolation Signal Logic Used to Provide Group 1 Isolation,Due to Failure of 5A-K30A Relay | /03L-0 on 781204:surveillance Test Revealed Failure of a Channel Main Steam Line High Flow Circuitry in Primary Containment Isolation Signal Logic Used to Provide Group 1 Isolation,Due to Failure of 5A-K30A Relay | |
| 05000277/LER-1978-049-03, /03L-0 on 781218:surveillance Testing Revealed B Rod Block Monitor Set Points Had Shifted Upwards Approx 15%. Caused by Failure of Zener Diode in Flow Bias Circuitry Power Supply | /03L-0 on 781218:surveillance Testing Revealed B Rod Block Monitor Set Points Had Shifted Upwards Approx 15%. Caused by Failure of Zener Diode in Flow Bias Circuitry Power Supply | |
| 05000277/LER-1978-050, Updated LER 78-050/03Z-1:on 781221,during Surveillance Test W/Units at Full Power,Time to Reach Rated Voltage & Frequency for E-2 & E-3 Diesels Was About 11 & 13 Seconds, Respectively.Caused by Wearing of Woodward Governors | Updated LER 78-050/03Z-1:on 781221,during Surveillance Test W/Units at Full Power,Time to Reach Rated Voltage & Frequency for E-2 & E-3 Diesels Was About 11 & 13 Seconds, Respectively.Caused by Wearing of Woodward Governors | |
| 05000277/LER-1978-050-03, /03L-0 on 781221:during Routine Surveillance Test, Time to Reach Rated V & Hz for E2 Diesel Was 11 Seconds, & 13 Seconds for E3 Diesel.Probably Due to Faulty Woodward Governor | /03L-0 on 781221:during Routine Surveillance Test, Time to Reach Rated V & Hz for E2 Diesel Was 11 Seconds, & 13 Seconds for E3 Diesel.Probably Due to Faulty Woodward Governor | |
| 05000277/LER-1978-051-03, /03L-0 on 781227:during Routine Surveillance Test, Setpoint of Pressure Switch Found to Be Approx 10% in Excess of Tech Spec Limit.Caused by Sheared Lockdown Screw on Setpoint Adjust.Pressure Switch Recalibr & Returned to Sv | /03L-0 on 781227:during Routine Surveillance Test, Setpoint of Pressure Switch Found to Be Approx 10% in Excess of Tech Spec Limit.Caused by Sheared Lockdown Screw on Setpoint Adjust.Pressure Switch Recalibr & Returned to Svc | |