| | | Reporting criterion |
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| 05000267/LER-1978-005, Forwards LER 78-005/03X-1 | Forwards LER 78-005/03X-1 | |
| 05000267/LER-1978-005-03, /03X-1 on 781107:malfunctions in 1A,1C & 1D Circulator Speed Measurement Caused Loss of High Speed Circulator Signals on Different Dates,Due to Elec Circuit Unbalance & Signal Cable Resistance Change in Modifiers | /03X-1 on 781107:malfunctions in 1A,1C & 1D Circulator Speed Measurement Caused Loss of High Speed Circulator Signals on Different Dates,Due to Elec Circuit Unbalance & Signal Cable Resistance Change in Modifiers | |
| 05000267/LER-1978-016-03, /03X-1 on 780510:while Oper at 40% Pwr,Moisture Concentrations in Pcrv Exceeded Limits of 4.2.11.Moisture Was Introduced During Previous Loop 1 Shutdown & Collected in Pcrv Insulation | /03X-1 on 780510:while Oper at 40% Pwr,Moisture Concentrations in Pcrv Exceeded Limits of 4.2.11.Moisture Was Introduced During Previous Loop 1 Shutdown & Collected in Pcrv Insulation | |
| 05000267/LER-1978-016, Forwards LER 78-016/03X-1 | Forwards LER 78-016/03X-1 | |
| 05000267/LER-1978-018, Forwards LER 78-018/03X-3 | Forwards LER 78-018/03X-3 | |
| 05000267/LER-1978-018-03, /03X-3 on 781009:primary Coolant Oxidant Concentration Exceeded 10vpm W/Core Average Outlet Temp Greater than 1200 Degrees F.Caused by Accumulation of Water in Pcrv Insulation | /03X-3 on 781009:primary Coolant Oxidant Concentration Exceeded 10vpm W/Core Average Outlet Temp Greater than 1200 Degrees F.Caused by Accumulation of Water in Pcrv Insulation | |
| 05000267/LER-1978-025, Forwards LER 78-025/01X-1 | Forwards LER 78-025/01X-1 | |
| 05000267/LER-1978-025-01, /01X-1:on 780703,w/loss of Power to One of Two Redundant Logic Sys,Circulator Seal Malfunctioned & buffer- to-mid-buffer Trip of Helium Circulator Initiated.Caused by Logic Design Problem | /01X-1:on 780703,w/loss of Power to One of Two Redundant Logic Sys,Circulator Seal Malfunctioned & buffer- to-mid-buffer Trip of Helium Circulator Initiated.Caused by Logic Design Problem | |
| 05000267/LER-1978-029, Forwards LER 78-029/03L-0 | Forwards LER 78-029/03L-0 | |
| 05000267/LER-1978-029-03, /03L-0:on 780829,during Routine Check,Emergency Diesel Oil Day Tank Found Below 500 Gallon Level.Caused by Fuel Oil Transfer Pump Not Starting Until 350 Gallon Level Reached | /03L-0:on 780829,during Routine Check,Emergency Diesel Oil Day Tank Found Below 500 Gallon Level.Caused by Fuel Oil Transfer Pump Not Starting Until 350 Gallon Level Reached | |
| 05000267/LER-1978-030-03, /03L-0:on 780912,five Hydraulic Snubbers Found Inoperable.Caused by Empty Oil Reservoirs.Reservoirs Filled & Surveillance Interval Adjusted | /03L-0:on 780912,five Hydraulic Snubbers Found Inoperable.Caused by Empty Oil Reservoirs.Reservoirs Filled & Surveillance Interval Adjusted | |
| 05000267/LER-1978-031, Forwards LER 78-031/03L-0 | Forwards LER 78-031/03L-0 | |
| 05000267/LER-1978-031-03, /03L-0 on 780925:during Routine testing,1 of 5 Heating Ventilation & Air Conditioning Sys Isolation Dampers for 480 Volt Switchgear Room Would Not Shut,Due to Faulty O-ring in Damper Jamming Open Actuating Shaft | /03L-0 on 780925:during Routine testing,1 of 5 Heating Ventilation & Air Conditioning Sys Isolation Dampers for 480 Volt Switchgear Room Would Not Shut,Due to Faulty O-ring in Damper Jamming Open Actuating Shaft | |
| 05000267/LER-1978-032, Forwards LER 78-032/03L-0 | Forwards LER 78-032/03L-0 | |
| 05000267/LER-1978-032-03, /03L-0:on 780928,surveillance Check of Fixed Low Flow Alarm Bistables for Primary Coolant Dew Point Moisture Monitors Not Performed.Caused by Misinterpretation of Surveillance Requirements | /03L-0:on 780928,surveillance Check of Fixed Low Flow Alarm Bistables for Primary Coolant Dew Point Moisture Monitors Not Performed.Caused by Misinterpretation of Surveillance Requirements | |
| 05000267/LER-1978-033, Forwards LER 78-033/03L-0 | Forwards LER 78-033/03L-0 | |
| 05000267/LER-1978-033-03, /03L-0 on 781027:during Routing Surveillance of Steam Pipe Rupture Detection Sys,One of Three Bistables for High Temperature Under Pcrv Did Not Trip,Due to Corroded Cable Terminal Board at Junction Box | /03L-0 on 781027:during Routing Surveillance of Steam Pipe Rupture Detection Sys,One of Three Bistables for High Temperature Under Pcrv Did Not Trip,Due to Corroded Cable Terminal Board at Junction Box | |
| 05000267/LER-1978-034-03, /03L-0 on 781107:during Normal Oper a Release of Reactor Bldg Sump Effluent Req Cooling Tower Blowdown Flow to Increase Above Normal Rate to 4.39 Million Gallons for the Day,Due to Need to Dilute Sump Effluent Discharge | /03L-0 on 781107:during Normal Oper a Release of Reactor Bldg Sump Effluent Req Cooling Tower Blowdown Flow to Increase Above Normal Rate to 4.39 Million Gallons for the Day,Due to Need to Dilute Sump Effluent Discharge | |
| 05000267/LER-1978-034, Forwards LER 78-034/03L-0 | Forwards LER 78-034/03L-0 | |
| 05000267/LER-1978-035-03, /03L-0 on 781114:4 of 6 High Pwr Rod W/Drawal Prohibit Trip Points Were Set Too High.Accepted Test Procedure Voltage Range Permitted RWP to Be Set Higher than Tech Specs Allow | /03L-0 on 781114:4 of 6 High Pwr Rod W/Drawal Prohibit Trip Points Were Set Too High.Accepted Test Procedure Voltage Range Permitted RWP to Be Set Higher than Tech Specs Allow | |
| 05000267/LER-1978-035, Forwards LER 78-035/03L-0 | Forwards LER 78-035/03L-0 | |
| 05000267/LER-1978-036, Forwards LER 78-036/03L-0 | Forwards LER 78-036/03L-0 | |
| 05000267/LER-1978-036-03, /03L-0 on 781129:1 of 2 Engines Which Drive a Single Emergency Generator Failed to Start & Failed to Declutch from Generator After Failing to Start.No Cause Identified.Subsequent Tests Unable to Repeat Failure | /03L-0 on 781129:1 of 2 Engines Which Drive a Single Emergency Generator Failed to Start & Failed to Declutch from Generator After Failing to Start.No Cause Identified.Subsequent Tests Unable to Repeat Failure | |
| 05000267/LER-1978-037-03, /03L-0 on 781209:on 3 Occasions,The Core Average Outlet Temp Was 1200 F or More While Total Primary Coolant Oxidants Exceeded 10.0 Ppm.Caused Twice by Personnel Error & Once by Mgt Decision After Oxidant Introduction | /03L-0 on 781209:on 3 Occasions,The Core Average Outlet Temp Was 1200 F or More While Total Primary Coolant Oxidants Exceeded 10.0 Ppm.Caused Twice by Personnel Error & Once by Mgt Decision After Oxidant Introduction | |
| 05000267/LER-1978-037, Forwards LER 78-037/03L-0 | Forwards LER 78-037/03L-0 | |
| 05000267/LER-1978-038, Cancelled | Cancelled | |
| 05000267/LER-1978-039-03, /03L-0 on 781224:degraded Mode Operations Occurred During 2 Separate Repairs to a Buffer Helium Dryer Purge Valve.Caused by Leakage Past Valve Seat Which Required Bypass of Dryer | /03L-0 on 781224:degraded Mode Operations Occurred During 2 Separate Repairs to a Buffer Helium Dryer Purge Valve.Caused by Leakage Past Valve Seat Which Required Bypass of Dryer | |
| 05000267/LER-1978-040, Forwards LER 78-040/03L-0 | Forwards LER 78-040/03L-0 | |
| 05000267/LER-1978-040-03, /03L-0 on 781227:upset in Moisture Monitor Nitrogen Supply Sys Caused Cooling Gas Supply to Be Unstable.Caused by Severe Upset to Nitrogen Cooling Sys; Resultant Temp Rise Made Detectors Inoperable | /03L-0 on 781227:upset in Moisture Monitor Nitrogen Supply Sys Caused Cooling Gas Supply to Be Unstable.Caused by Severe Upset to Nitrogen Cooling Sys; Resultant Temp Rise Made Detectors Inoperable | |