| | | Reporting criterion |
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| 05000302/LER-1979-001, Forwards LER 79-001/03L-0 | Forwards LER 79-001/03L-0 | |
| 05000302/LER-1979-001-03, /03L-0 on 790101:during Operating Daily Surveillance Log Survey (SP-300),noted That Pressure in B Core Flood Tank Was 630 Psi.Caused by Operator Error During Repressurization | /03L-0 on 790101:during Operating Daily Surveillance Log Survey (SP-300),noted That Pressure in B Core Flood Tank Was 630 Psi.Caused by Operator Error During Repressurization | |
| 05000302/LER-1979-002-03, /03L-0 on 790102:33 Ft Wind Direction Monitor Was Inoperable.Caused by Wind Direction Sensor Bearing Being Contaminated W/Coal Dust.Sensor Renewed Thru Normal Maint | /03L-0 on 790102:33 Ft Wind Direction Monitor Was Inoperable.Caused by Wind Direction Sensor Bearing Being Contaminated W/Coal Dust.Sensor Renewed Thru Normal Maint | |
| 05000302/LER-1979-002, Forwards LER 79-002/03L-0 | Forwards LER 79-002/03L-0 | |
| 05000302/LER-1979-003-03, /03L-0 on 790106:during Rx Runback Following Turbine Trip,Main Feedwater Block Valve FWV-30 Did Not Close.Caused by Valve Sticking on Its Back Seat.Corrective Action:Manual Cycling | /03L-0 on 790106:during Rx Runback Following Turbine Trip,Main Feedwater Block Valve FWV-30 Did Not Close.Caused by Valve Sticking on Its Back Seat.Corrective Action:Manual Cycling | |
| 05000302/LER-1979-003, Forwards LER 79-003/03L-0 | Forwards LER 79-003/03L-0 | |
| 05000302/LER-1979-004-03, /03L-0 on 790115:cable Tunnel Sump Pump Failed to Start During Operability Verification.Maint Restored Sump Pump Operability.Caused Attributed to Failure of Pump | /03L-0 on 790115:cable Tunnel Sump Pump Failed to Start During Operability Verification.Maint Restored Sump Pump Operability.Caused Attributed to Failure of Pump | |
| 05000302/LER-1979-004, Forwards LER 79-004/03L-0 | Forwards LER 79-004/03L-0 | |
| 05000302/LER-1979-005-01, Discusses Commitment Stated in LER 79-005-01T-1 Re MSIV Valves Not Closing within Design Time of Five Seconds During Double Ended Pipe Rupture.Util Has Determined That Upgrading Air Circuit to Seismic Class I Will Not Be Nec | Discusses Commitment Stated in LER 79-005-01T-1 Re MSIV Valves Not Closing within Design Time of Five Seconds During Double Ended Pipe Rupture.Util Has Determined That Upgrading Air Circuit to Seismic Class I Will Not Be Necessary | |
| 05000302/LER-1979-006, Forwards LER 79-006/01T-0 | Forwards LER 79-006/01T-0 | |
| 05000302/LER-1979-006-01, /01T-0 on 790201:figures for Transient Limits on Rapid Depressurizations & High Pressure Injection Tests in Disagreement W/Cycle 2 Reload Rept.Tech Specs Will Be Revised | /01T-0 on 790201:figures for Transient Limits on Rapid Depressurizations & High Pressure Injection Tests in Disagreement W/Cycle 2 Reload Rept.Tech Specs Will Be Revised | |
| 05000302/LER-1979-007-03, /03L-0 on 790117:reactor Coolant Dose Equivalent I-131 Exceeded 1.0 Mci.Caused by Expected Transient Spikes Following Reactor Trip & Known Leaking Fuel Pins | /03L-0 on 790117:reactor Coolant Dose Equivalent I-131 Exceeded 1.0 Mci.Caused by Expected Transient Spikes Following Reactor Trip & Known Leaking Fuel Pins | |
| 05000302/LER-1979-007, Forwards LER 79-007/03L-0 | Forwards LER 79-007/03L-0 | |
| 05000302/LER-1979-008-03, /03L-0 on 790119:RC3-GP3-BL4 Light Did Not Extinguish When Test Switch Returned to Off Position.Caused by Dirty Contacts in Relay | /03L-0 on 790119:RC3-GP3-BL4 Light Did Not Extinguish When Test Switch Returned to Off Position.Caused by Dirty Contacts in Relay | |
| 05000302/LER-1979-008, Forwards LER 79-008/03L-0 | Forwards LER 79-008/03L-0 | |
| 05000302/LER-1979-009, Forwards LER 79-009/03L-0 | Forwards LER 79-009/03L-0 | |
| 05000302/LER-1979-009-03, /03L-0 on 790124:while Performing Reactor Protection Sys Functional Testing,Rod Group 6 Dropped Into Core,Rod Group Overlap Was Exceeded.Caused by a AC Power Breaker Being Left Open | /03L-0 on 790124:while Performing Reactor Protection Sys Functional Testing,Rod Group 6 Dropped Into Core,Rod Group Overlap Was Exceeded.Caused by a AC Power Breaker Being Left Open | |
| 05000302/LER-1979-010-03, /03L-0 on 790125:during Routine Operations,Air Handling Fan Failed to Start.Caused by Faulty Overcurrent Timing Relay | /03L-0 on 790125:during Routine Operations,Air Handling Fan Failed to Start.Caused by Faulty Overcurrent Timing Relay | |
| 05000302/LER-1979-010, Forwards LER 79-010/03L-0 | Forwards LER 79-010/03L-0 | |
| 05000302/LER-1979-011-03, /03L-0 on 790210:reactor Coolant Dose Equivalent I-131 Exceeded Tech Spec Limits.Caused by Expected Spike Following Reactor Trip & Known Leaking Fuel Pins.Reactor Coolant Sys Cleanup Returned to Acceptable Limits | /03L-0 on 790210:reactor Coolant Dose Equivalent I-131 Exceeded Tech Spec Limits.Caused by Expected Spike Following Reactor Trip & Known Leaking Fuel Pins.Reactor Coolant Sys Cleanup Returned to Acceptable Limits | |
| 05000302/LER-1979-012, Forwards LER 79-012/03L-0 | Forwards LER 79-012/03L-0 | |
| 05000302/LER-1979-012-03, /03L-0 on 790214:during Safeguards Test, RB-3GP-2 Light Did Not Illuminate.Caused by Burr on Relay Shaft.Relay Cleaned & Burr Removed | /03L-0 on 790214:during Safeguards Test, RB-3GP-2 Light Did Not Illuminate.Caused by Burr on Relay Shaft.Relay Cleaned & Burr Removed | |
| 05000302/LER-1979-014, Forwards LER 79-014/03L-0 | Forwards LER 79-014/03L-0 | |
| 05000302/LER-1979-014-03, /03L-0 on 790220:decay Heat Cooler 3A Outlet Remote Shutdown Temp Indicator Inaccurate & Rendered Inoperable.Caused by Failed Resistance Temp Detector (Rtd). RTD Replaced & Sys Recalibr | /03L-0 on 790220:decay Heat Cooler 3A Outlet Remote Shutdown Temp Indicator Inaccurate & Rendered Inoperable.Caused by Failed Resistance Temp Detector (Rtd). RTD Replaced & Sys Recalibr | |
| 05000302/LER-1979-015-03, /03L-0 on 790221:fire Svc Tanks 1-B & 1-A Contained Less than Min Volume Required by Tech Specs. Caused by Improper Design.Engineering Evaluation Initiated | /03L-0 on 790221:fire Svc Tanks 1-B & 1-A Contained Less than Min Volume Required by Tech Specs. Caused by Improper Design.Engineering Evaluation Initiated | |
| 05000302/LER-1979-015, Forwards LER 79-015/03L-0 | Forwards LER 79-015/03L-0 | |
| 05000302/LER-1979-016, Forwards Supplementary Info Re LER 79-016/04X-0 | Forwards Supplementary Info Re LER 79-016/04X-0 | |
| 05000302/LER-1979-017, Forwards LER 79-017/03L-0 | Forwards LER 79-017/03L-0 | |
| 05000302/LER-1979-017-03, /03L-0 on 790223:heat Trace Recorder for Concentrated Boric Acid Flowpath Was Malfunctioning & Rendered Inoperable.Caused by Failed Recorder Drive Wheel. Drive Wheel Replaced & Heat Trace Recorder Returned to Svc | /03L-0 on 790223:heat Trace Recorder for Concentrated Boric Acid Flowpath Was Malfunctioning & Rendered Inoperable.Caused by Failed Recorder Drive Wheel. Drive Wheel Replaced & Heat Trace Recorder Returned to Svc | |
| 05000302/LER-1979-018, Forwards LER 79-018/03L-0 | Forwards LER 79-018/03L-0 | |
| 05000302/LER-1979-018-03, /03L-0 on 790301:inner Airlock Door Found Unlatched.Caused by Inadequate Latching Design.Corrective Action Will Be Determined Upon Results of Engineering Info Request | /03L-0 on 790301:inner Airlock Door Found Unlatched.Caused by Inadequate Latching Design.Corrective Action Will Be Determined Upon Results of Engineering Info Request | |
| 05000302/LER-1979-019, Forwards LER 79-019/03L-0 | Forwards LER 79-019/03L-0 | |
| 05000302/LER-1979-019-03, /03L-0 on 790223:motor Driven Emergency Feedwater Pump Discharge Pressure Gauge EF-2-PI Was Out of Calibr. Caused by Inoperable Dampening Snubber Located in Sensing Line.Snubber Was Replaced | /03L-0 on 790223:motor Driven Emergency Feedwater Pump Discharge Pressure Gauge EF-2-PI Was Out of Calibr. Caused by Inoperable Dampening Snubber Located in Sensing Line.Snubber Was Replaced | |
| 05000302/LER-1979-020, Forwards LER 79-020/03L-0 | Forwards LER 79-020/03L-0 | |
| 05000302/LER-1979-020-03, /03L-0 on 790228:following Reactor Trip,Chem/Rod Sampling Revealed Reactor Coolant Dose Equivalent I-131 Exceeded 1.0 Mci Per Gram,Contrary to Tech Specs.Caused by Spike Following Reactor Trip & Leaking Fuel Pins | /03L-0 on 790228:following Reactor Trip,Chem/Rod Sampling Revealed Reactor Coolant Dose Equivalent I-131 Exceeded 1.0 Mci Per Gram,Contrary to Tech Specs.Caused by Spike Following Reactor Trip & Leaking Fuel Pins | |
| 05000302/LER-1979-021-04, /04L-0 During 1978:difference of More than Two Std Deviations Existed Between Preoperational Study & Operational Study in Metabolic Functions of Discharge Salt Marshes Adjacent to Facility.Cause Natural or Seasonal | /04L-0 During 1978:difference of More than Two Std Deviations Existed Between Preoperational Study & Operational Study in Metabolic Functions of Discharge Salt Marshes Adjacent to Facility.Cause Natural or Seasonal | |
| 05000302/LER-1979-021, Forwards LER 79-021/04L-0 | Forwards LER 79-021/04L-0 | |
| 05000302/LER-1979-023, Forwards LER 79-023/03L-0 | Forwards LER 79-023/03L-0 | |
| 05000302/LER-1979-023-03, /03L-0 on 790308:discovered RCS C1 Concentration Was .17ppm,contrary to Tech Specs.Caused by Appearance of Suspended Solids During Cooldown When Boron Concentration Increased.Purification Sys Reduced Concentration | /03L-0 on 790308:discovered RCS C1 Concentration Was .17ppm,contrary to Tech Specs.Caused by Appearance of Suspended Solids During Cooldown When Boron Concentration Increased.Purification Sys Reduced Concentration | |
| 05000302/LER-1979-024-03, /03L-0 on 790315:during Plant Heatup,Discovered That Temp Device at 175 Ft Elevation of Meteorological Monitoring Tower Was Inoperable.Cause Unknown.Temp Device Tested Satisfactorily & Returned to Svc | /03L-0 on 790315:during Plant Heatup,Discovered That Temp Device at 175 Ft Elevation of Meteorological Monitoring Tower Was Inoperable.Cause Unknown.Temp Device Tested Satisfactorily & Returned to Svc | |
| 05000302/LER-1979-024, Forwards LER 79-024/03L-0 | Forwards LER 79-024/03L-0 | |
| 05000302/LER-1979-026, Forwards LER 79-026/03L-0 | Forwards LER 79-026/03L-0 | |
| 05000302/LER-1979-026-03, /03L-0 on 790318:during Reactor Startup,Discovered Absolute Position Indication for Rod 8 Was Inoperable.Caused by Sticking Reed Switch.Variable Ac Frequency,Applied to Reed Switch Circuit,Eliminated Sticking | /03L-0 on 790318:during Reactor Startup,Discovered Absolute Position Indication for Rod 8 Was Inoperable.Caused by Sticking Reed Switch.Variable Ac Frequency,Applied to Reed Switch Circuit,Eliminated Sticking | |
| 05000302/LER-1979-027, Forwards Supplemental Info for LER 79-027/04X-0 | Forwards Supplemental Info for LER 79-027/04X-0 | |
| 05000302/LER-1979-028, Forwards LER 79-028/03L-0 | Forwards LER 79-028/03L-0 | |
| 05000302/LER-1979-028-03, /03L-0 on 790321:while Performing Emergency Feedwater Sys Demonstration,Discovered Pump Discharge Pressure Gauge EF-2-PI Inoperable.Caused by Failed Pressure Gauge.Gauge Replaced | /03L-0 on 790321:while Performing Emergency Feedwater Sys Demonstration,Discovered Pump Discharge Pressure Gauge EF-2-PI Inoperable.Caused by Failed Pressure Gauge.Gauge Replaced | |
| 05000302/LER-1979-029, Forwards LER 79-029/03L-0 | Forwards LER 79-029/03L-0 | |
| 05000302/LER-1979-029-03, /03L-0 on 790321:discovered Makeup Pump 3-C Discharge Stopcheck Valve MUV-2 Was Improperly Positioned. Cause unknown.MUV-2 Reset to Proper Throttle Setting & Returned to Svc | /03L-0 on 790321:discovered Makeup Pump 3-C Discharge Stopcheck Valve MUV-2 Was Improperly Positioned. Cause unknown.MUV-2 Reset to Proper Throttle Setting & Returned to Svc | |
| 05000302/LER-1979-031-01, /01T-0 on 790412:during Routine Radwaste Release, Release Monitor Went Into High Alarm Because Radwaste Isolation Valves WDV-320 & 321 Failed to Close.Caused by Sticking Contacts in Monitor Bypass Switch | /01T-0 on 790412:during Routine Radwaste Release, Release Monitor Went Into High Alarm Because Radwaste Isolation Valves WDV-320 & 321 Failed to Close.Caused by Sticking Contacts in Monitor Bypass Switch | |
| 05000302/LER-1979-031, Forwards LER 79-031/01T-0 | Forwards LER 79-031/01T-0 | |
