| | | Reporting criterion |
|---|
| 05000244/LER-1979-001-03, /03L-0 on 790103:during Test C,Safety Injection Pump Failed to Start from Bus 14 Breaker on First Attempt. Caused by Loose Wire Connection to Alarm Switch in Circuit Breaker.Switch Replaced | /03L-0 on 790103:during Test C,Safety Injection Pump Failed to Start from Bus 14 Breaker on First Attempt. Caused by Loose Wire Connection to Alarm Switch in Circuit Breaker.Switch Replaced | |
| 05000244/LER-1979-001, Forwards LER 79-001/03L-0 | Forwards LER 79-001/03L-0 | |
| 05000244/LER-1979-002, Forwards LER 79-002/03L-0 | Forwards LER 79-002/03L-0 | |
| 05000244/LER-1979-002-03, /03L-0 on 790104:during Steady State Power a Charging Pump Leaked & Found to Be Cracked.Caused by Fatigue Cracking Due to High Loop Stresses Generated in Compression Stroke of Piston in Cylinder | /03L-0 on 790104:during Steady State Power a Charging Pump Leaked & Found to Be Cracked.Caused by Fatigue Cracking Due to High Loop Stresses Generated in Compression Stroke of Piston in Cylinder | |
| 05000244/LER-1979-003, Forwards LER 79-003/03L-0 | Forwards LER 79-003/03L-0 | |
| 05000244/LER-1979-003-03, /03L-0 on 790104:B Charging Pump Speed Control Operated Improperly W/Sticking Lower Varidrive Disc & Belt Slippage at Min Speed.Operation at 1 Speed Caused Local Lubrication Problems | /03L-0 on 790104:B Charging Pump Speed Control Operated Improperly W/Sticking Lower Varidrive Disc & Belt Slippage at Min Speed.Operation at 1 Speed Caused Local Lubrication Problems | |
| 05000244/LER-1979-004-03, /03L-0 on 790206:fuel Pressure Lost & Generator Tripped During Diesel Generator Testing.Caused by Operator Error.Operator Reinstructed & Precautionary Note Added to Procedure to Emphasize Importance of Proper Sequence | /03L-0 on 790206:fuel Pressure Lost & Generator Tripped During Diesel Generator Testing.Caused by Operator Error.Operator Reinstructed & Precautionary Note Added to Procedure to Emphasize Importance of Proper Sequence | |
| 05000244/LER-1979-004, Forwards LER 79-004/03L-0 | Forwards LER 79-004/03L-0 | |
| 05000244/LER-1979-005, Forwards LER 79-005/03L-0 | Forwards LER 79-005/03L-0 | |
| 05000244/LER-1979-005-03, /03L-0 on 790206:containment Recirculation Sump Failed to Reopen After Hydro Testing.Caused by Flexibility of Long Extension Rod Between Limitorque SMB-00 Operator & Valve.Valve Stroked Monthly & Timed Quarterly | /03L-0 on 790206:containment Recirculation Sump Failed to Reopen After Hydro Testing.Caused by Flexibility of Long Extension Rod Between Limitorque SMB-00 Operator & Valve.Valve Stroked Monthly & Timed Quarterly | |
| 05000244/LER-1979-006-01, /01T-0 on 790321:degradation in 6 Tubes of Steam Generator B.Caused by Localized Residual Caustics Erosion at Support Plates & Stress Corrosion Mechanism Re Deformation at Tube Sheet & Operationsl Stresses | /01T-0 on 790321:degradation in 6 Tubes of Steam Generator B.Caused by Localized Residual Caustics Erosion at Support Plates & Stress Corrosion Mechanism Re Deformation at Tube Sheet & Operationsl Stresses | |
| 05000244/LER-1979-006, Forwards LER 79-006/01T-0 | Forwards LER 79-006/01T-0 | |
| 05000244/LER-1979-007-03, /03L-0 on 790402:surveillance Requirement for Nuclear Intermediate Range Channel Test within Seven Days Was Not Performed for Two Training Criticalities.Caused by Unclear Training Procedures | /03L-0 on 790402:surveillance Requirement for Nuclear Intermediate Range Channel Test within Seven Days Was Not Performed for Two Training Criticalities.Caused by Unclear Training Procedures | |
| 05000244/LER-1979-007, Forwards LER 79-007/03L-0 | Forwards LER 79-007/03L-0 | |
| 05000244/LER-1979-008, Forwards LER 79-008/03X-1 | Forwards LER 79-008/03X-1 | |
| 05000244/LER-1979-008-03, /03X-1 on 790406:during Maint on Boric Acid Flow Control Valve,Leaks Noted on Valve Outlet 1-inch Nipple. Caused by External Caustic Pitting.Actions to Minimize Caustics & Chlorides Are Being Taken | /03X-1 on 790406:during Maint on Boric Acid Flow Control Valve,Leaks Noted on Valve Outlet 1-inch Nipple. Caused by External Caustic Pitting.Actions to Minimize Caustics & Chlorides Are Being Taken | |
| 05000244/LER-1979-009, Confirms 790416 Telcon to W Raymond Reporting LER-79-09, Boric Acid Storage Tanks Out of Spec for Vol & Weight of Boric Acid.Orderly Load Reduction & Batching Operations Commenced;Tanks within Specs | Confirms 790416 Telcon to W Raymond Reporting LER-79-09, Boric Acid Storage Tanks Out of Spec for Vol & Weight of Boric Acid.Orderly Load Reduction & Batching Operations Commenced;Tanks within Specs | |
| 05000244/LER-1979-009-01, /01T-0 on 790416:routine Sample of Boron Boric Acid Tank Showed 11.8%.Reactor Power Reduction Started. Caused by Possible Backflow of Makeup Water.Check Valve Replaced | /01T-0 on 790416:routine Sample of Boron Boric Acid Tank Showed 11.8%.Reactor Power Reduction Started. Caused by Possible Backflow of Makeup Water.Check Valve Replaced | |
| 05000244/LER-1979-010-01, /01T-0 on 790420:routine Sample of Boric Acid Storage Tanks Showed Less than 12%.Reactor Power Reduction Started.Caused by Possible Backflow of Makeup Water.Check Valve Replaced | /01T-0 on 790420:routine Sample of Boric Acid Storage Tanks Showed Less than 12%.Reactor Power Reduction Started.Caused by Possible Backflow of Makeup Water.Check Valve Replaced | |
| 05000244/LER-1979-010, Confirms 790420 Telcon W/W Lasurus Re LER 79-10,boric Acid Storage Tanks out-of-spec for Vol & Weight.Orderly Load Reduction Initiated to Restore Tanks to Required Specs | Confirms 790420 Telcon W/W Lasurus Re LER 79-10,boric Acid Storage Tanks out-of-spec for Vol & Weight.Orderly Load Reduction Initiated to Restore Tanks to Required Specs | |
| 05000244/LER-1979-011, Confirms 790510 Discussion W/D Beckman Re LER 79-011.New Valve Internals Being Mfg to Correct Problem.Will Be Available in June | Confirms 790510 Discussion W/D Beckman Re LER 79-011.New Valve Internals Being Mfg to Correct Problem.Will Be Available in June | |
| 05000244/LER-1979-011-01, /01T-0 on 790511:notified by Manufacturer of Pressurizer Power Operated Relief Valve That Template Used to Fabricate Valve Internals Not within Specs.Caused by Error in Tracer Lathe Template | /01T-0 on 790511:notified by Manufacturer of Pressurizer Power Operated Relief Valve That Template Used to Fabricate Valve Internals Not within Specs.Caused by Error in Tracer Lathe Template | |
| 05000244/LER-1979-012, Forwards LER 79-012/01X-1 | Forwards LER 79-012/01X-1 | |
| 05000244/LER-1979-012-01, /01X-1 on 790327:several Anchor Bolts Identified as Not Being in Accordance W/Drawing During Inservice Insp. Caused by Inadequate Control of Const Installation.Anchor Bolts Corrected | /01X-1 on 790327:several Anchor Bolts Identified as Not Being in Accordance W/Drawing During Inservice Insp. Caused by Inadequate Control of Const Installation.Anchor Bolts Corrected | |
| 05000244/LER-1979-013-01, /01T-0 on 790707:during Ultrasonic & Radiographic Examination of Steam Generator Feedwater nozzle-to-elbow Welds,Small Linear Indications in Elbows Were Found.Cause Not Identified.Elbows Replaced | /01T-0 on 790707:during Ultrasonic & Radiographic Examination of Steam Generator Feedwater nozzle-to-elbow Welds,Small Linear Indications in Elbows Were Found.Cause Not Identified.Elbows Replaced | |
| 05000244/LER-1979-013, Forwards LER 79-013/01T-0 | Forwards LER 79-013/01T-0 | |
| 05000244/LER-1979-014, Forwards LER 79-014/03L-0 | Forwards LER 79-014/03L-0 | |
| 05000244/LER-1979-014-03, /03L-0 on 790709:during RCS Cooldown,Operator Noted Channel P-452 Overpressurization Alarm Not in Correct State.Caused by Bistable Setpoint Drift.Alarm Unit Replaced | /03L-0 on 790709:during RCS Cooldown,Operator Noted Channel P-452 Overpressurization Alarm Not in Correct State.Caused by Bistable Setpoint Drift.Alarm Unit Replaced | |
| 05000244/LER-1979-015, Forwards Updated LER 79-015/01X-1 | Forwards Updated LER 79-015/01X-1 | |
| 05000244/LER-1979-015-01, During Piping Sys Insp Per IE Bulletin 79-14,found Pipe Supports Not Installed Per Tech Specs.Caused by Lack of Documented Approvals for Field Changes.Pipe Supports Reworked to Establish Acceptability | During Piping Sys Insp Per IE Bulletin 79-14,found Pipe Supports Not Installed Per Tech Specs.Caused by Lack of Documented Approvals for Field Changes.Pipe Supports Reworked to Establish Acceptability | |
| 05000244/LER-1979-016, Forwards LER 79-016/01T-0 | Forwards LER 79-016/01T-0 | |
| 05000244/LER-1979-016-01, /01T-0 on 790804:14-h Interval of Reactor Operation Lapsed Prior to Trip During Trip Testing Following Maint Outage & Restoration of Criticality.Caused by Unclear Checkoff procedure.On-shift Training Held | /01T-0 on 790804:14-h Interval of Reactor Operation Lapsed Prior to Trip During Trip Testing Following Maint Outage & Restoration of Criticality.Caused by Unclear Checkoff procedure.On-shift Training Held | |
| 05000244/LER-1979-017, Forwards LER 79-017/01T-0 | Forwards LER 79-017/01T-0 | |
| 05000244/LER-1979-017-01, /01T-0:on 790831,analysis of Boric Acid Storage Tank Samples Revealed Concentrations Above 13% Limits. Possibly Due to Evaporation,Redissolution of Crystals or Sampling Error.Load Reduction Begun & Levels Restored | /01T-0:on 790831,analysis of Boric Acid Storage Tank Samples Revealed Concentrations Above 13% Limits. Possibly Due to Evaporation,Redissolution of Crystals or Sampling Error.Load Reduction Begun & Levels Restored | |
| 05000244/LER-1979-018-03, /03L-0:on 790913,output Breaker to Bus 16 Did Not Close.Caused by Overcurrent Relay Contact Lacking Continuity.Relay Inspected & Actuated | /03L-0:on 790913,output Breaker to Bus 16 Did Not Close.Caused by Overcurrent Relay Contact Lacking Continuity.Relay Inspected & Actuated | |
| 05000244/LER-1979-018, Forwards LER 79-018/03L-0 | Forwards LER 79-018/03L-0 | |
| 05000244/LER-1979-019-03, /03L-0:on 790919,loose Nuts on Anchor Bolts Were Found on Pipe Supports & on Svc Water Piping to Standby Auxiliary Feedwater Pump.Caused by Nuts Working Loose During Sys Operation.Nuts Were Torqued to Current Requirement | /03L-0:on 790919,loose Nuts on Anchor Bolts Were Found on Pipe Supports & on Svc Water Piping to Standby Auxiliary Feedwater Pump.Caused by Nuts Working Loose During Sys Operation.Nuts Were Torqued to Current Requirement | |
| 05000244/LER-1979-019, Frowards LER 79-019/03L-0 | Frowards LER 79-019/03L-0 | |
| 05000244/LER-1979-020, Forwards LER 79-020/03L-0 | Forwards LER 79-020/03L-0 | |
| 05000244/LER-1979-020-03, /03L-0:on 791009,during Snubber Insp,Snubber in Position MS146 Found W/No Accumulator Level.Caused by Movement of Pipe Resulting in Wear on Accumulator & Eventual Failure of Shaft Seal.Unit Replaced W/Spare | /03L-0:on 791009,during Snubber Insp,Snubber in Position MS146 Found W/No Accumulator Level.Caused by Movement of Pipe Resulting in Wear on Accumulator & Eventual Failure of Shaft Seal.Unit Replaced W/Spare | |
| 05000244/LER-1979-021, Forwards LER 79-021/03L-0 | Forwards LER 79-021/03L-0 | |
| 05000244/LER-1979-021-03, /03L-0:on 791018,Tech Spec Requirement 4.8.5 Re Stroking Crossover Valves Omitted from Procedure for Testing Standby Auxiliary Feedwater Pumps.Caused by Personnel Error. Test Personnel Briefed & Performed Tests | /03L-0:on 791018,Tech Spec Requirement 4.8.5 Re Stroking Crossover Valves Omitted from Procedure for Testing Standby Auxiliary Feedwater Pumps.Caused by Personnel Error. Test Personnel Briefed & Performed Tests | |
| 05000244/LER-1979-022, Forwards LER 79-022/01T-0 | Forwards LER 79-022/01T-0 | |
| 05000244/LER-1979-022-01, /01T-0:on 791201,during Normal Operations,Found Two Leaking Tubes & Eleven Other Tubes W/Pluggable Defects. Caused by Possible Thermal,Hydraulic & Mechanical Loading in Wedge Area & by Possible Residual Caustics Concentratio | /01T-0:on 791201,during Normal Operations,Found Two Leaking Tubes & Eleven Other Tubes W/Pluggable Defects. Caused by Possible Thermal,Hydraulic & Mechanical Loading in Wedge Area & by Possible Residual Caustics Concentration | |
| 05000244/LER-1979-023, Forwards Revised LER 79-023/01X-1 | Forwards Revised LER 79-023/01X-1 | |
| 05000244/LER-1979-023-01, During Inservice Insp, Liquid Penetrant Examination of Pressurizer nozzle-to-safe- End Weld Showed Linear Indications.Caused by Inadequate Delta Ferrite Content & Geometric Discontinuity | During Inservice Insp, Liquid Penetrant Examination of Pressurizer nozzle-to-safe- End Weld Showed Linear Indications.Caused by Inadequate Delta Ferrite Content & Geometric Discontinuity | |
| 05000244/LER-1979-024, Forwards Updated LER 79-024 | Forwards Updated LER 79-024 | |
| 05000244/LER-1979-024-01, Samples of Boric Acid Storage Tank Concentrations Found Below Min Limits.Caused by Backflow of Refueling Water Through Boric Acid Tank Outlet Motor Operated Valve | Samples of Boric Acid Storage Tank Concentrations Found Below Min Limits.Caused by Backflow of Refueling Water Through Boric Acid Tank Outlet Motor Operated Valve | |
| 05000244/LER-1979-025, Forwards LER 79-025/03L-0 | Forwards LER 79-025/03L-0 | |
| 05000244/LER-1979-025-03, /03L-0:on 791223,containment Entry Was Made But Personnel Air Lock Not Tested Until 791226,exceeding 48-h Tech Spec Requirement.Caused by Existing Procedural Inadequacy | /03L-0:on 791223,containment Entry Was Made But Personnel Air Lock Not Tested Until 791226,exceeding 48-h Tech Spec Requirement.Caused by Existing Procedural Inadequacy | |