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| 05000315/LER-1978-003, Updated LER 78-003/03X-1:on 771227 Axial Power Distribution Monitoring Sys Not Restored to Operable Status to Perform Core Scan Per Tech Specs.Caused by Overlooking Tagged Incore Detectors.Procedure Modified | Updated LER 78-003/03X-1:on 771227 Axial Power Distribution Monitoring Sys Not Restored to Operable Status to Perform Core Scan Per Tech Specs.Caused by Overlooking Tagged Incore Detectors.Procedure Modified | |
| 05000316/LER-1978-022, Forwards LER 78-022/03X-1, 78-031/03X-1 & 78-076/03X-1 | Forwards LER 78-022/03X-1, 78-031/03X-1 & 78-076/03X-1 | |
| 05000316/LER-1978-022-03, /03X-1 on 780407:during Normal Operation,Position Indication for Rods D-12 & H-8 Exceeded +/- 12 Step Limit of Tech Specs.Outputs of Amplifiers That Feed Control Board Indicators Found to Be Incorrect | /03X-1 on 780407:during Normal Operation,Position Indication for Rods D-12 & H-8 Exceeded +/- 12 Step Limit of Tech Specs.Outputs of Amplifiers That Feed Control Board Indicators Found to Be Incorrect | |
| 05000315/LER-1978-023, Forwards LER 78-023/03X-1,LER 78-038/03X-1,LER 78-042/03X-1 LER 78-065/03L-0 & LER 78-066/03L-0 | Forwards LER 78-023/03X-1,LER 78-038/03X-1,LER 78-042/03X-1 LER 78-065/03L-0 & LER 78-066/03L-0 | |
| 05000315/LER-1978-023-03, /03X-1 on 780312:during Containment Air Lock Leakage Test on 650 Foot Elevation Inner Door,Door Seal Leakage Rate Exceeded Tech Spec Limit,Caused by Paint Chips on Rubber Seal Which Obstructed Proper Seal on Door | /03X-1 on 780312:during Containment Air Lock Leakage Test on 650 Foot Elevation Inner Door,Door Seal Leakage Rate Exceeded Tech Spec Limit,Caused by Paint Chips on Rubber Seal Which Obstructed Proper Seal on Door | |
| 05000316/LER-1978-026-11, /01T-0:on 780502,during Change from Mode 5 to Mode 4,pumps Became Inoperable When Containment Spray Pump Control Switches in Pull Were in Lockout Position.Caused by Procedural Inadequacy & Personnel Error | /01T-0:on 780502,during Change from Mode 5 to Mode 4,pumps Became Inoperable When Containment Spray Pump Control Switches in Pull Were in Lockout Position.Caused by Procedural Inadequacy & Personnel Error | |
| 05000316/LER-1978-031-03, /03X-1 on 780507:during Normal Operation Between 780507 & 780519 RPI Did Not Meet +/- 12 Step Limit of Tech Specs 22 Times.Caused by Recessed Pins in Connector | /03X-1 on 780507:during Normal Operation Between 780507 & 780519 RPI Did Not Meet +/- 12 Step Limit of Tech Specs 22 Times.Caused by Recessed Pins in Connector | |
| 05000316/LER-1978-034-03, /03l-0:on 781010,manual Isolation Valve in Flow Test Circuit of Turbine Driven Aux Feed Pump Found Unlocked & Open.Instructions Issued to Keep a Manual Valve in Test Line Closed & Locked Except When Testing | /03l-0:on 781010,manual Isolation Valve in Flow Test Circuit of Turbine Driven Aux Feed Pump Found Unlocked & Open.Instructions Issued to Keep a Manual Valve in Test Line Closed & Locked Except When Testing | |
| 05000316/LER-1978-034, Forwards LER 78-034/03X-2, 78-078/03L-0 & 78-079/03L-0 | Forwards LER 78-034/03X-2, 78-078/03L-0 & 78-079/03L-0 | |
| 05000316/LER-1978-037, Forwards Revised LER 78-037/01T-1 Which Rescinds Commitment to Run Emergency Diesel Generator While Other Diesel Generator Being Removed from Operable Status.Change Will Reduce Number of Fast Cold Starts | Forwards Revised LER 78-037/01T-1 Which Rescinds Commitment to Run Emergency Diesel Generator While Other Diesel Generator Being Removed from Operable Status.Change Will Reduce Number of Fast Cold Starts | |
| 05000316/LER-1978-037-01, /01T-1:on 780615,both Diesel Generators Placed in Condition Where Neither Engine Capable of Automatic Start. Operator Closed & Tagged Out Starting Air Pilot Valves on Wrong Diesel Generator.Operator Reprimanded | /01T-1:on 780615,both Diesel Generators Placed in Condition Where Neither Engine Capable of Automatic Start. Operator Closed & Tagged Out Starting Air Pilot Valves on Wrong Diesel Generator.Operator Reprimanded | |
| 05000315/LER-1978-038-03, /03X-1 on 780623:while in Mode 2,position of Rods C-3,C-13,N-13,H-6,F-8 & K-8 Indicated Deviation of Greater than 12 Steps from Demand Position.Caused by Signal Conditioning Modules | /03X-1 on 780623:while in Mode 2,position of Rods C-3,C-13,N-13,H-6,F-8 & K-8 Indicated Deviation of Greater than 12 Steps from Demand Position.Caused by Signal Conditioning Modules | |
| 05000315/LER-1978-042-03, /03X-1 on 780710:during Startup Testing,Flux Map Measurement Was Not Processed During Specified Time Limit. Though Flux Map Was Obtained,It Was Not Processed Due to Change in Manpower Requirements | /03X-1 on 780710:during Startup Testing,Flux Map Measurement Was Not Processed During Specified Time Limit. Though Flux Map Was Obtained,It Was Not Processed Due to Change in Manpower Requirements | |
| 05000316/LER-1978-045-03, /03L-0:on 780612,following Addition of Boric Acid to Borated Water Sys,Boron Injection Tank Boron Concentration Found to Be Below Limits.Caused by Chemical Technician Error | /03L-0:on 780612,following Addition of Boric Acid to Borated Water Sys,Boron Injection Tank Boron Concentration Found to Be Below Limits.Caused by Chemical Technician Error | |
| 05000315/LER-1978-048, Forwards LER 78-048/03L on 780810 | Forwards LER 78-048/03L on 780810 | |
| 05000315/LER-1978-048-03, /03L on 780810:After a Control Rod Movement of 5 Steps,The Apdms Failed to Perform Scans to Determine F(Z). Procedureal Change Has Been Issued & Opers Instructed in Its Use. (Encl to 7809190196) | /03L on 780810:After a Control Rod Movement of 5 Steps,The Apdms Failed to Perform Scans to Determine F(Z). Procedureal Change Has Been Issued & Opers Instructed in Its Use. (Encl to 7809190196) | |
| 05000315/LER-1978-049-03, /03l-0 on 780912:when the Operator Cycle Tested the Valve Upon Returning It to Svc.He Failed to Realize That an Isolation Time Test Was Required.Times Were Posted as Corrective Action,For All Valves.(Encl to 7809190209) | /03l-0 on 780912:when the Operator Cycle Tested the Valve Upon Returning It to Svc.He Failed to Realize That an Isolation Time Test Was Required.Times Were Posted as Corrective Action,For All Valves.(Encl to 7809190209) | |
| 05000315/LER-1978-049, Forwards LER 78-049/03l-0 on 780912 | Forwards LER 78-049/03l-0 on 780912 | |
| 05000315/LER-1978-050-03, /03L-0 on 780602:boron Injection Throttle Valve Positions Were Out of Adjustment & Were Repositioned,Leaving the Valves W/Unknown Flow Capacity Until 780818.Caused by an Engr Error.(Encl to 7809280065) | /03L-0 on 780602:boron Injection Throttle Valve Positions Were Out of Adjustment & Were Repositioned,Leaving the Valves W/Unknown Flow Capacity Until 780818.Caused by an Engr Error.(Encl to 7809280065) | |
| 05000315/LER-1978-050, Forwards LER 78-050.03L-0 | Forwards LER 78-050.03L-0 | |
| 05000315/LER-1978-052-03, /03L-0:on 780828,steam Generator Loop Level Exceeded Min Setpoint Limit.Caused by Bad Solder Joint on Resistor,Causing Input Resistance to Vary.Solder Joint Reformed | /03L-0:on 780828,steam Generator Loop Level Exceeded Min Setpoint Limit.Caused by Bad Solder Joint on Resistor,Causing Input Resistance to Vary.Solder Joint Reformed | |
| 05000315/LER-1978-053-03, /03L-0 on 780907:containment Atmosphere Gaseous & Particulate Monitoring Pump Discovered Inoperable.Failure Attributed to Obsolesence.Pump Replaced W/Improved Model W/ Longer Operational Expectancy | /03L-0 on 780907:containment Atmosphere Gaseous & Particulate Monitoring Pump Discovered Inoperable.Failure Attributed to Obsolesence.Pump Replaced W/Improved Model W/ Longer Operational Expectancy | |
| 05000315/LER-1978-056, Forwards LER 78-056/03L-0 | Forwards LER 78-056/03L-0 | |
| 05000316/LER-1978-056-03, /03L-0 on 780728:Rpts That Surveillance Test on 2AB Diesel Generator Resulted in Overspeed Trip as Generator Was Unloaded.Caused by Linkage Cap Screw Breaking in Governor Linkage.(Encl to 7809190315) | /03L-0 on 780728:Rpts That Surveillance Test on 2AB Diesel Generator Resulted in Overspeed Trip as Generator Was Unloaded.Caused by Linkage Cap Screw Breaking in Governor Linkage.(Encl to 7809190315) | |
| 05000316/LER-1978-056, Forwards LER 78-056/03L-1 & 78-056/03L-0 | Forwards LER 78-056/03L-1 & 78-056/03L-0 | |
| 05000315/LER-1978-056-03, /03L on 780923: After Shutdown Boron Concentration Was 1940 Ppm,Which Is Below Limit Due to Reduction of Boron Level After Sampling at 1% Accumulator Vol Increase.Admin Procedure Was Rev to Req Level & Boron Verification | /03L on 780923: After Shutdown Boron Concentration Was 1940 Ppm,Which Is Below Limit Due to Reduction of Boron Level After Sampling at 1% Accumulator Vol Increase.Admin Procedure Was Rev to Req Level & Boron Verification | |
| 05000315/LER-1978-057-03, /03L-0 on 781002:result of Study Declared Pump Inoperable.Caused by Inconsistency of Pumps Ability to Achieve Its Rated Speed,Which Was Traced to Pump Speed Governor.Governor Replaced | /03L-0 on 781002:result of Study Declared Pump Inoperable.Caused by Inconsistency of Pumps Ability to Achieve Its Rated Speed,Which Was Traced to Pump Speed Governor.Governor Replaced | |
| 05000315/LER-1978-057, Forwards LER 78-057/03L-0,LER 78-058/03L-0 & LER 78-059/03L-0 | Forwards LER 78-057/03L-0,LER 78-058/03L-0 & LER 78-059/03L-0 | |
| 05000315/LER-1978-058-03, /03L-0 on 781003:rounding Off of T(Z) Resulted in Fz Calculations Being non-conservative in Top of the Core. Caused Apdms to Perform Stairstep Comparison to Fz Limit in the Top 1/2 of Core Height | /03L-0 on 781003:rounding Off of T(Z) Resulted in Fz Calculations Being non-conservative in Top of the Core. Caused Apdms to Perform Stairstep Comparison to Fz Limit in the Top 1/2 of Core Height | |
| 05000316/LER-1978-059, Forwards LER 78-059/03L-1 and 78-060/03L-0 | Forwards LER 78-059/03L-1 and 78-060/03L-0 | |
| 05000316/LER-1978-059-03, /03L-1 on 780806:reactor Pwr Increased Above Admin Level of 91% & Tech Spec 4.2.6.1 Limit of 94% W/O Determining Axial Pwr Dist Factor Fz. Caused by Personnel Error. (Encl to 78809190234) | /03L-1 on 780806:reactor Pwr Increased Above Admin Level of 91% & Tech Spec 4.2.6.1 Limit of 94% W/O Determining Axial Pwr Dist Factor Fz. Caused by Personnel Error. (Encl to 78809190234) | |
| 05000316/LER-1978-060-03, /03L-0 on 780809:with Reactor Pwr at 97% Computer Failed to Printout All F Scans. Investgation Determined Cause to Be Apdms Computer (Encl to 7809190234) | /03L-0 on 780809:with Reactor Pwr at 97% Computer Failed to Printout All F Scans. Investgation Determined Cause to Be Apdms Computer (Encl to 7809190234) | |
| 05000315/LER-1978-060-03, /03L-0 on 781028:RCS Leak Discovered Due to Excessive Packing on a 314 Valve in Pzr Safety Valve Loop Seal Drain Line.Valve Found to Be 1/8 Turn Open.Valve Closed and Leakage Stopped | /03L-0 on 781028:RCS Leak Discovered Due to Excessive Packing on a 314 Valve in Pzr Safety Valve Loop Seal Drain Line.Valve Found to Be 1/8 Turn Open.Valve Closed and Leakage Stopped | |
| 05000315/LER-1978-060, Forwards LER 78-060/03L-0 | Forwards LER 78-060/03L-0 | |
| 05000316/LER-1978-061-03, /03L-0 on 780802:Rpts While in Hot Standby Above P-11,pressurizer Level Indication Channel 3 Found to Be Different from Other Channels.Caused by Gas Pocket in Sensing Line.(Encl to 7809190315) | /03L-0 on 780802:Rpts While in Hot Standby Above P-11,pressurizer Level Indication Channel 3 Found to Be Different from Other Channels.Caused by Gas Pocket in Sensing Line.(Encl to 7809190315) | |
| 05000315/LER-1978-061, Forwards LER 78-061/03L-0 | Forwards LER 78-061/03L-0 | |
| 05000315/LER-1978-061-03, /03L-0 on 780823:discovered That During Past Surveillance Testing,Allowable Surveillance Extension Had Been Exceeded for Target Flux Difference Surveillance Test. Caused by Personnel Error | /03L-0 on 780823:discovered That During Past Surveillance Testing,Allowable Surveillance Extension Had Been Exceeded for Target Flux Difference Surveillance Test. Caused by Personnel Error | |
| 05000316/LER-1978-062, Forwards LER 78-062/03L-0 | Forwards LER 78-062/03L-0 | |
| 05000315/LER-1978-062-03, /03L-0:on 781107,Unit 1 AB Diesel Declared Inoperable Following Inadvertent Removal of Circuit Board Card from Diesel Voltage Regulator Circuitry.Removal Caused by Technician Snagging the Board on Clothing | /03L-0:on 781107,Unit 1 AB Diesel Declared Inoperable Following Inadvertent Removal of Circuit Board Card from Diesel Voltage Regulator Circuitry.Removal Caused by Technician Snagging the Board on Clothing | |
| 05000315/LER-1978-062, Forwards LER 78-062/03L-0 | Forwards LER 78-062/03L-0 | |
| 05000316/LER-1978-063, Forwards LER 78-063/03L-0 | Forwards LER 78-063/03L-0 | |
| 05000315/LER-1978-063-03, /03L-0 on 781128:aux Feed Throttle from Mdafp to 3S/G Position Indication Was Intermittent;Valve Would Not Close Electrically.Caused by Broken Lead Between Terminal 43 & 57 on Aux Switch of Limitorque SMB-0-25 Operator | /03L-0 on 781128:aux Feed Throttle from Mdafp to 3S/G Position Indication Was Intermittent;Valve Would Not Close Electrically.Caused by Broken Lead Between Terminal 43 & 57 on Aux Switch of Limitorque SMB-0-25 Operator | |
| 05000315/LER-1978-063, Forwards LER 78-063/03L-0 | Forwards LER 78-063/03L-0 | |
| 05000316/LER-1978-063-03, /03L-0 on 780820:While Test Closing Turbine Valves at 99% Pwr,Steam Flow Was Reduced.Reactor Coolant Heated to 577F Degrees & Pressure Dropped to 2185 Psia Caused by Testing Valve at Too High Pwr Level | /03L-0 on 780820:While Test Closing Turbine Valves at 99% Pwr,Steam Flow Was Reduced.Reactor Coolant Heated to 577F Degrees & Pressure Dropped to 2185 Psia Caused by Testing Valve at Too High Pwr Level | |
| 05000316/LER-1978-064, Forwards LER 78-064/03L-0 | Forwards LER 78-064/03L-0 | |
| 05000316/LER-1978-064-03, /03L-0:on 780905,rod Position Indication for Rod C-9 Showed Deviation of Greater That 12 Steps from Demand Position.Caused by Drift of Signal Conditioning Module. Module Recalibr | /03L-0:on 780905,rod Position Indication for Rod C-9 Showed Deviation of Greater That 12 Steps from Demand Position.Caused by Drift of Signal Conditioning Module. Module Recalibr | |
| 05000315/LER-1978-064-03, /03L-0 on 781214:during Surveillance Noted That Position of Rod M-8 Was Greater than Allowable 12 Step Limit.Caused by Maladjustment of Variable Shunt Resistor Contained in Control Board Indicator for Rod M-8 | /03L-0 on 781214:during Surveillance Noted That Position of Rod M-8 Was Greater than Allowable 12 Step Limit.Caused by Maladjustment of Variable Shunt Resistor Contained in Control Board Indicator for Rod M-8 | |
| 05000315/LER-1978-064, Forwards LER 78-064/03L-0 | Forwards LER 78-064/03L-0 | |
| 05000316/LER-1978-065-03, /03L-0 on 780901:viscosity of Diesel Lube Oil Was Low During Routine Check Due to Fuel Oil Contamination; for Fuel Oil Injection Pumps & 1 Fuel Injectors Were Replaced | /03L-0 on 780901:viscosity of Diesel Lube Oil Was Low During Routine Check Due to Fuel Oil Contamination; for Fuel Oil Injection Pumps & 1 Fuel Injectors Were Replaced | |
| 05000316/LER-1978-065, Forwards LER 78-065/03L-0 & 78-066/03L-0 | Forwards LER 78-065/03L-0 & 78-066/03L-0 | |
