Pages that link to "05000029/LER-1977-001, Forwards LER 77-001/03L-0"
Jump to navigation
Jump to search
The following pages link to 05000029/LER-1977-001, Forwards LER 77-001/03L-0:
Displayed 50 items.
- 05000029/LER-1977-033, Forwards LER 77-033/03L-0 (← links)
- 05000029/LER-1977-035-03, /03L-0:on 770627,discovered That Four of Eight Thermocouple Locations on Boron Injection Flow Path Were Less than 150 F.Caused by Leakage from Purification Sys Through Three Valves to SI Tank.Valves Repaired (← links)
- 05000029/LER-1977-033-03, /03L-0:on 770620,discovered That Five of Eight Thermocouple Locations on Boron Injection Flow Path Were Less than 150 F.Caused by Leakage from Purification Sys Through Three Valves to SI Tank.Valves Repaired (← links)
- 05000029/LER-1977-054-03, /03l-0:on 771205,during Surveillance Test Battery Cell of Battery Bank 1 Failed to Meet Acceptance Criteria of Tech Specs.Cause Unknown.Battery Replaced W/Spare & Recharged.Investigation Continuing (← links)
- 05000029/LER-1977-054, Forwards LER 77-054/03l-0.Detailed Event Analysis Encl (← links)
- 05000029/LER-1977-055-03, /03L-0:on 771217,during 12-h Shutdown for Operator Training,Dose Equivalent I-131 Concentration of Primary Coolant Sys Exceeded Tech Spec.Cause Assumed to Be Cladding Defect in Single Fuel Rod (← links)
- 05000029/LER-1977-055, Forwards LER 77-055/03L-0.Detailed Event Analysis Encl (← links)
- 05000029/LER-1977-043-03, /03L-0:on 770810,during Refueling,Pressurized Wide Range Level Scram Setpoint Discovered Out of Tolerance. Caused by Instrument Drift.Setpoints Were Readjusted (← links)
- 05000029/LER-1977-043, Forwards LER 77-043/03L-0 (← links)
- 05000029/LER-1977-041-03, /03L-0:on 780802,during Surveillance Testing, Diesel Generator 1 Overheated & Failed to Meet Acceptance Criteria.Caused by Young Radiator Co Radiator Tubes Being Blocked by Sludge & Scale.Radiator Cleaned (← links)
- 05000029/LER-1977-041, Forwards LER 77-041/03L-0 (← links)
- 05000029/LER-1977-031-03, /03L-0:on 770609,loop Seal Radiation Monitor Pegged at Low End of Scale.Caused by RM-40 Power Supply High Voltage Tripping.Voltage Adjusted (← links)
- 05000029/LER-1977-031, Forwards LER 77-031/03L-0 (← links)
- 05000029/LER-1977-015, Forwards LER 77-015/03L-0 (← links)
- 05000029/LER-1977-002-03, /03L-0:on 770107,during Monthly Test,Inboard Packing Gland of Low Pressure Pump 1 Found to Leak Excessively.Caused by Packing Deterioration.Pump Removed from Svc,Repacked & Satisfactorily Test Run (← links)
- 05000029/LER-1977-002, Forwards LER 77-002/03L-0 (← links)
- 05000029/LER-1977-003-03, /03L-0:on 770110,primary Vent Stack Monitor Particulate Channel Failed to Meet Acceptance Criteria of Channel Functional Test.Caused by Drifting of Instruments High Voltage.High Voltage Adjusted (← links)
- 05000029/LER-1977-003, Forwards LER 77-003/03L-0 (← links)
- ML19347C422 (← links)
- ML19347C419 (redirect page) (← links)
- 05000029/LER-1977-001 (redirect page) (← links)
- 05000029/LER-2001-001 (← links)
- 05000029/LER-1985-010, Forwards LER 85-010-00 Re Inadvertent Reactor Scram During Maint Activity (← links)
- 05000029/LER-1985-009, Forwards LER 85-009-00 (← links)
- 05000029/LER-1985-008, Forwards LER 85-008-00 (← links)
- 05000029/LER-1985-007, Forwards LER 85-007-00 (← links)
- 05000029/LER-1985-002, Forwards LER 85-002-00 (← links)
- 05000029/LER-1977-035, Forwards LER 77-035/03L-0 (← links)
- 05000029/LER-1977-033, Forwards LER 77-033/03L-0 (← links)
- 05000029/LER-1986-005, Forwards LER 86-005-00 Re Primary Coolant Dose Equivalent I-131 Greater than 1 Mci Per G (← links)
- 05000029/LER-1986-004, Forwards LER 86-004-00 Re Reactor Scram Due to Loss of Heater Drain Pumps During Severe Lightning Storm (← links)
- 05000029/LER-1982-019, Forwards LER 82-019/03L-0 (← links)
- 05000029/LER-1982-020, Forwards LER 82-020/03L-0 (← links)
- 05000029/LER-1982-016, Forwards LER 82-016/03L-0 (← links)
- 05000029/LER-1982-017, Forwards LER 82-017/03L-0 (← links)
- 05000029/LER-1982-013, Forwards LER 82-013/03L-0 (← links)
- 05000029/LER-1982-012, Forwards LER 82-012/03L-0 (← links)
- 05000029/LER-1982-011, Forwards LER 82-011/03L-0 (← links)
- 05000029/LER-1982-010, Forwards LER 82-010/03L-0 (← links)
- 05000029/LER-1982-009, Forwards LER 82-009/03L-0 (← links)
- 05000029/LER-2021-001, Compensatory Measure Not Established for a Momentary I/O Board Communication Loss (← links)
- 05000029/LER-1986-008, :on 860619,main Coolant Pump 1 Flow Indication Abnormally Low.Caused by Tensile Stress on Valve Stem in Valve Open Position Due to Stress Corrosion.Replacement Stems Fabricated & Procedures Revised (← links)
- 05000029/LER-1989-013, :on 890829,reactor Scram Occurred When Train B Nonreturn Valve Trip Switch Inadvertently Placed in Trip Position.Caused by Personnel Error.Procedure Revised to Eliminate Switch Operation (← links)
- 05000029/LER-1989-012, :on 890825,leak Found in Weld Attaching Vent Line to Loop Bypass Line.Caused by Fatigue.Lab Evaluation Will Be Conducted to Confirm Results of Initial Evaluation (← links)
- 05000029/LER-1989-003, :on 890209,chemistry Analysis of Steam Generator 2 Blowdown Effluent Indicated Abnormal Results. Caused by Personnel Error.Personnel Will Be Trained Re Regulatory Requirements & Procedures Revised (← links)
- 05000029/LER-1989-007, :on 890423,control Rods Dropped & Automatic Reactor Scram Occurred as Result of Low Main Coolant Pressure.Caused by Broken Compression Connector on Motor Brake Solenoid Circuit.Control Rods Exercised (← links)
- 05000029/LER-1989-006, :on 890420,high Radiation Exclusion Area Door Found Open.Caused by Inadequate Door Latch Installation & Wind Conditions.Door Relatched & Locked (← links)
- 05000029/LER-1989-004, :on 890224,determined That Control Room Emergency Air Cleaning Sys Inoperable from Mar 1988 to Aug 1988.Caused by Personnel Error.Electrical Leads Properly Terminated & Personnel Admonished (← links)
- 05000029/LER-1988-002, :on 890322,automatic Reactor Scram Occurred When Power to Amplifiers in Nuclear Instrument Cabinet a Lost.Caused by Failure of Capacitor in Sola Transformer. Capacitors Replaced in Accordance W/Qa Program (← links)
- 05000029/LER-1989-005, :on 890406,reactor Was Manually Tripped When Main Steam Line 1 Isolation Valve Inadvertently Closed. Caused by Technician Performing Routine Surveillance Test Missing One Step.Technicians Counseled (← links)
- 05000029/LER-1989-011, :on 890725,potential Transformer Fuse Removed Resulting in Inadvertent Deenergization of 480 Volt Emergency Bus 1.Caused by Improper Tagging of Emergency Diesel Generator Sys.Procedure Developed (← links)
- 05000029/LER-1989-010, :on 890724,identified That Potential Existed for Exceeding 400 Kw Capacity of Emergency Diesel Generator 3.Caused by Pump Operation in Cavitation.Administrative Controls to Be Added to Existing Procedures (← links)
- 05000029/LER-1989-009, :on 890718,turbine Bldg Sump Composite Pump Found Electrically Unplugged.Caused by Improper Performance of Surveillance Procedure Performed on 890710.Chemist Involved Reinstructed in Correct Procedure (← links)
- 05000029/LER-1989-008, :on 890521,discovered That Surveillance to Determine Containment Air Mass Had Not Been Performed within 24 H Surveillance Cycle.Caused by Inadequate Administrative Controls.Shift Technical Advisor Counseled (← links)
- 05000029/LER-1988-008, :on 890517,loss of Generator Field Excitation Resulted in Automatic Turbine Governor Response & Subsequent Relay Action Tripping Breakers BK-1 & BK-2.Caused by Failure of Field Overvoltage Protection Circuit Board (← links)
- 05000029/LER-1987-003, :on 870218,reactor Scram on High Main Coolant Pressure Occurred.Caused by Procedure Inadequacy.Manual Load Reduction Requirement Removed from Immediate Action of Procedure & Stationary Gripper Coil Replaced (← links)
- 05000029/LER-1986-013, :on 861004,reactor Scrammed After Main Steam Line Trip Circuit Switch Inadvertently Placed in Trip Position.Caused by Personnel Error.Personnel Reinstructed Re Importance of Switch Positioning (← links)
- 05000029/LER-1987-012, :on 870706,reactor Scram on High Main Coolant Pressure Occurred During Main Turbine Overspeed Trip Test. Caused by Personnel Error.Personnel Instructed on Need for Communications & Headphones Installed in Hall (← links)
- 05000029/LER-1987-013, :on 870710,access Door to High Radiation Exclusion Area Found Open & Unattended.Caused by Personnel Error.Two Responsible Instrumentation & Control Technicians Restricted from Plant Until Retrained (← links)
- 05000029/LER-1987-011, :on 870613,combined Leakage for Penetrations Subj to Type B & C Testing Exceeded Tech Spec Limit.Caused by Faulty Isolation Valve SW-TV-408 & Blank Flange Due to Improper Installation.Faults Fixed (← links)
- 05000029/LER-1987-010, :on 870601,improper Execution of Switching Order Resulted in Relay Action & Automatic Start of Emergency Diesel Generators 1 & 2.Caused by Personnel Error. Operator Reinstructed (← links)
- 05000029/LER-1987-007, :on 870521,pressurizer Safety Code Valves PR-SV-181 & PR-SV-182 Found Out of Tech Spec Tolerance.Cause Undetermined.Valves Removed & Shipped to Wyle Testing Facility for Insp & Engineering Evaluation (← links)
- 05000029/LER-1987-006, :on 870520,discovered That Previous Indications of Defects in Nine Tubes Not Identified During 1984 Insp. Caused by Improved Eddy Current Insp & Evaluation Methods. Part 21 Investigation Initiated (← links)
- 05000029/LER-1987-008, :on 870531,loss of Station Svc Transformers 3 & 6 & Auto Start of Emergency Diesel Generator 1 Occurred. Caused by Excessive Vibration of Control Room Main Control Panel.Personnel Advised to Be Cautious (← links)
- 05000029/LER-1987-014, :on 871121,plant Shutdown Initiated.Caused by Nonreturn Valve (Nrv) Low Nitrogen Pressure & Instrumentation Inaccuracy.Procedure to Charge Nitrogen to Nrv Accumulator Will Be Changed (← links)
- 05000029/LER-1986-011, :on 861003,surveillance Requirement for Containment Isolation Valves Not Performed.Caused by Failure to Properly Incorporate Requirement Into Procedure.Full Review of Surveillance Conducted (← links)
- 05000029/LER-1987-009, :on 870522,damage & Failed Fuel Rods in Fuel Assembly A-731 Discovered.Caused by Core Baffle Spacer Flow Jetting.Baffle Spacer Plugs Installed to Reduce Pressure Behind Spacers & Eliminate Flow Jetting (← links)
- 05000029/LER-1987-005, :on 870502,main Steam Line Safety Valves Exceeded Setpoint Requirement.Caused by Setpoint Drift. MS-SV-409F Reset to Bring Valve Closer to Nominal Setpoint. MS-SV-409E Accepted as Is (← links)
- 05000029/LER-1986-006, :on 860619,blowdown Line from Steam Generator 3 Isolated (Closed VD-V-631) in Preparation to Repair Leak in Downstream Line & Declared Inoperable.Line Returned to Svc on 860621 (← links)
- 05000029/LER-1986-009, :on 860628,discovered That Overload Relay Trip Coils on Breakers Supplying Four motor-operated Valves of Insufficient Capacity for in-rush Current.Caused by Inadequate Receipt Insp of Equipment (← links)
- 05000029/LER-1986-007-01, Forwards LER 86-007-01,per 10CFR50.73(a)(2)(v) (← links)
- 05000029/LER-1978-031-01, /01T-0 on 781111:during Core XIII-XIV Refueling Shutdown,Fuel Sipping Revealed Degradation of Fuel Cladding in Assemblies A493E,B502E,B490E & B482E.Cause Is Under Investigation by Exxon (← links)
- 05000029/LER-1986-001, :on 860311,discovered Emergency Plan Change Issued W/O Plant Operations Review Committee Review.Caused by Lack of Corporate Level Administrative Controls.Controls Will Be Revised.Errata Issued (← links)
- 05000029/LER-1988-007, :on 880430,pressurizer Solenoid Operated Relief Valve Inadvertently Opened.Caused by Personnel Error. Instrumentation & Control Testers & Technicians Counseled & Identification of Test Circuits Improved (← links)
- 05000029/LER-1988-006, :on 880420,switchgear Room Halon Sys Out of Svc for More than 14 Days.Caused by Halon Bottle Weighing Two Pounds Less than Allowed.Fire Watch Established Until Bottles Recharged & Declared Operable (← links)
- 05000029/LER-1988-004, :on 880331,operators Noted That Procedure OP-3107, Steam Generator Tube Rupture Failed to Provide Adequate Instruction for Complete Isolation of Steam Generator Following Tube Rupture (← links)
- 05000029/LER-1988-005, :on 880401,evaluation of Six Fire Doors Resulted in Doors Being Declared Degraded.Caused by Inadequate Review of Possible Door Failure Modes.Doors Modified to Provide Positive Latch (← links)
- 05000029/LER-1988-003, :on 880326,reactor Scrammed & Turbine Tripped on Low Steam Generator Level at 85% Power.Caused by Failure of Power Supply for Steam Generator Level Control Channels on Steam Generators.Feedwater Pumps Restarted (← links)
- 05000029/LER-1983-013-01, :on 830413,review of Design Basis for Low Temp Overpressure Protection Indicated That Events in Original Basis Could Exceed Pressure Restrictions.Caused by Personnel Error.Procedures Being Revised (← links)
- 05000029/LER-1988-001, :on 880126,procedure Inadequacy Discovered That Could Allow Insufficient Load Testing of Emergency Generators.Caused by Inadequate Procedure Review.Procedure Change Notice Prepared & Test Completed (← links)
- 05000029/LER-1977-035-03, /03L-0:on 770627,discovered That Four of Eight Thermocouple Locations on Boron Injection Flow Path Were Less than 150 F.Caused by Leakage from Purification Sys Through Three Valves to SI Tank.Valves Repaired (← links)
- 05000029/LER-1977-033-03, /03L-0:on 770620,discovered That Five of Eight Thermocouple Locations on Boron Injection Flow Path Were Less than 150 F.Caused by Leakage from Purification Sys Through Three Valves to SI Tank.Valves Repaired (← links)
- 05000029/LER-1985-006, :on 851120,during Surveillance Testing,Three Main Condensate Pump Circuit Breakers Failed to Open on Receipt of Trip Signal.Caused by Open Circuit (← links)
- 05000029/LER-1985-004-01, :on 851206,during Refueling Outage,Valve PR-SV-181 (S/N Bw 07972) Setpoint Exceeded Tolerance.Caused by Setpoint Drift.Setpoint Adjusted & Retested.Overpressure Protection Rept Reviewed (← links)
- 05000029/LER-1985-003-01, :on 851105,discovered That Fuel Assembly B-696I Sustained Fretting Damage on Spacer Grids.On 851106,found That Assembly B-688 Had Failed Fuel Rod & on 851107,found That Assembly A-679 Had Failed Rod (← links)
- 05000029/LER-1985-005-01, :on 851115,during Fire Hazard Analysis Review, Fire Barrier Between Turbine Bldg & Switchgear Room Deemed Inadequate.Caused by Inadequate Design.New Wall Installed on 851127 (← links)
- 05000029/LER-1985-001, :on 850513,current LOCA Analysis Determined Not in Compliance W/Requirements of Section I.A of App K to 10CFR50 Re Axial Power Distribution Assumptions.Restrictive Control Rod Limit Implemented (← links)
- 05000029/LER-1985-005, :on 851115,during Fire Hazard Analysis Review, Steel Plate Used to Seal Void Between Turbine Bldg & Switchgear Room Reevaluated.Design Did Not Provide Adequate Fire Protection.Fire Watch Stationed (← links)
- 05000029/LER-1985-004, :on 851106,valve PR-SV-181 (Sin Bw 07972) Setpoint Exceeded Tech Spec Tolerance.Caused by Setpoint Drift.Setpoint Adjusted & Valve Retested.Setpoint Drift Under Investigation (← links)
- 05000029/LER-1985-003, :on 851105,fuel Assemblies B-6961,B-688 & A-679 from Core Positions C-9,H-8 & K-5,respectively,found Damaged & W/Failed Fuel Rods.Caused by Core Baffle Spacer Flow Jetting.Cycle Xviii Fuel Assemblies Modified (← links)
- 05000029/LER-1983-013, :on 830413,due to Shifts in App G Curve, Determined That Events as Postulated in Original Design Basis Could Potentially Exceed Pressure Restrictions of Revised Curve.Caused by Personnel Error (← links)
- 05000029/LER-1985-001-01, Forwards LER 85-001-01 (← links)
- 05000029/LER-1984-011-02, Forwards LER 84-011-02 (← links)
- 05000029/LER-1990-006, :on 900811,emergency Diesel Generators Failed Tech Spec Surveillance Test.Investigation Team Formed to Review Testing History & Determine Cause.Design Change to Replace Emergency Diesel Generators Initiated (← links)
- 05000029/LER-1990-005, :on 900706,determined That Pressurizer Code Safety Valve Exceeded Tech Spec Lift Tolerance of Nameplate Set Pressure.Caused by Setpoint Drift.Valve Retested & Disassembled (← links)
- 05000029/LER-1982-019-03, /03L-0:on 820629,voltage Surges on 115-kV Lines During Thunderstorm Resulted in Loss of Z 126 Line & Loss of Flow Scram.Caused by Lightning Strike on 115-kV Line During Storm.Line Restored to Svc (← links)
- 05000029/LER-1982-020-03, /03L-0:on 820629,during Testing of Nonreturn Valve Tripping Sys,Valve 3 Failed to Close on Actuation of Train A.Caused by Failure of Main Dump Solenoid Valve.Valve Replaced W/Improved Model.Remaining Valves Will Be Replaced (← links)
- 05000029/LER-1990-007, :on 900927,incore Instrumentation Spire Failure Resulted in Pressure Boundary Leakage (← links)
- 05000029/LER-1990-004, :on 900629,high Radiation Area Found Not Conspicuously Posted.Caused by Personnel Error Involving Inadvertent Positioning of Cover.Personnel Reinstructed & Area Posted in Conspicuous Manner (← links)
- 05000029/LER-1990-002, :on 900623,automatic ESF Actuation Occurred Following Loss of 480 Volt Bus.Operator Inadvertently Opened Incorrect Breaker.Infrequently Performed Evolutions Will Be Incorporated Into Training Program (← links)
- 05000029/LER-1990-003, :on 900623,main Steam Safety Valve Setpoints Exceeded Tech Spec Requirements During Plant Refueling Outage.Caused by Setpoint Drift.Valves Retested (← links)
- 05000029/LER-1982-016-03, /03L-0:on 820611,during Troubleshooting of Malfunction Inside Vaporizer Concentrate Air Particulate Monitor,Signal Cable for Outside Monitor Disconnected.Caused by Personnel Error.Signal Cable Reconnected (← links)
- 05000029/LER-1982-017-03, /03L-0:on 820611,NRV Channel B Trip Circuit to NRV-2 Became Inoperable Causing Reduction in Reactor Protective Sys Instrumentation.Caused by Failure of Faulty Fusetron 2 Amp Indicating Fuse.Fuse Replaced (← links)
- 05000029/LER-1982-013-03, /03L-0:on 820527,during Normal Operation in Mode 1 Auxiliary Feedwater Flow Channel Failed.Caused by Failed Power Supply Model 241A12 Due to High Environ Temps.Power Supply Replaced (← links)
- 05000029/LER-1982-012-03, /03L-0:on 820527,repair of 2-inch Carbon Steel Valve VD-V-618 Leak Past Seat Resulted in Isolation of Valve & Steam Generator Blowdown Monitor.Caused by Small Steam Cut Between Seat & Body Threads,Allowing Bypass of Steam (← links)
- 05000029/LER-1982-011-03, /03L-0:on 820521,during Normal Operation in Mode 1,number 4 Steam Generator Blowdown Radiation Monitor Failed Low.Caused by Buildup of Foreign Matl on Electrical Contacts of Circuit Board.Contacts Cleaned (← links)
- 05000029/LER-1982-010-03, /03L-0:on 820514,during Normal Operation in Mode 1,zone 2 Flow Alarm Sounded.Continuous Flow Revealed Through Alarm Check Auxiliary Valve.Caused by Insufficient Seating.Disc Seal Piece Turned Over (← links)
- 05000029/LER-1982-009-03, /03L-0:on 820508,containment Isolation Valve AS-V-719 to Emergency Boiler Feed Pump Found Leaking by Seat.Caused by Poor Valve Seating.Valve Isolated & Lapped & Bonnet Gasket Replaced (← links)
- 05000029/LER-1982-008-03, /03L-0:on 820504,3 Gpm Leak Found in Underground Fire Main Between Waste Disposal & Primary Auxiliary Bldgs. Isolation of Leak Resulted in Loss of Yard Hydrant 15.Caused by an Improper Gasket to Coupling Seal 1 (← links)
- 05000029/LER-1982-008, Forwards LER 82-008/03L-0 (← links)
- 05000029/LER-1982-002-03, /03L-0:on 820316,during Normal Operation,Main Coolant Loop Flow Indication 4 Responded Erratically.Caused by Failure of Amplifier Unit 927D658 Gr 1 Mfg by Westinghouse.Amplifier Will Be Replaced During Next Outage (← links)
- 05000029/LER-1982-002, Forwards LER 82-002/03L-0 (← links)
- 05000029/LER-1982-003-03, /03L-0:on 820316,in Mode 1,auxiliary Feedwater Flow Channel 2 Failed.Caused by Failed Power Supply,Model 241A12 Mfg by Power Pac,Inc,Located in Controlotron Series 241 Flow Display Computer.Instrumentation to Be Replaced (← links)
- 05000029/LER-1982-003, Forwards LER 82-003/03L-0 (← links)
- 05000029/LER-1982-004-03, /03L-0:on 820320,during Operation in Mode 1, Auxiliary Feedwater Flow Channel 3 Failed.Caused by Failed Power Supply,Model 241A12,in Controlotron Series 241 Flow Display Computer.Instrumentation Will Be Replaced (← links)
- 05000029/LER-1982-004, Forwards LER 82-004/03L-0 (← links)
- 05000029/LER-1981-021, Has Been Canceled (← links)
- 05000029/LER-1982-007-03, /03L-0:on 820420,check Valve HC-V-119 Found Leaking from Inlet & Outlet Flanges.Caused by Relaxation of Bolting for Flanged Mating Surfaces.Bolting Replaced & Torqued (← links)
- 05000029/LER-1982-007, Forwards LER 82-007/03L-0 (← links)
- 05000029/LER-1982-006-03, /03L-0:on 820420,primary Vent Stack Iodine Radiation Monitor Ratemeter Failed High.Caused by Failure of Air Dryer Due to Moisture.Detector Replaced (← links)
- 05000029/LER-1982-006, Forwards LER 82-006/03L-0 (← links)
- 05000029/LER-1982-001-03, /03L-0:on 820107,during Surveillance of Low Main Coolant Flow Sys,Relays 1 & 2C in Sys B Failed to Dropout When de-energized.Caused by Burrs on Relay Plunger.Burrs Removed,Upper Bushings Replaced & Clearances Checked (← links)
- 05000029/LER-1982-001, Forwards LER 82-001/03L-0 (← links)
- 05000029/LER-1981-034-03, /03L-0:on 811230,while in Mode 1,unusual Noise Heard in Starter Motor of Emergency Diesel Generator 2. Cause Unknown.Broken Housing Found on Bendix Drive.New Starter Motor Installed (← links)
- 05000029/LER-1981-034, Forwards LER 81-034/03L-0 (← links)
- 05000029/LER-1981-033-03, /03L-0:on 811209,during Mode 1 Surveillance of Low Main Coolant Flow Sys,Relay 4C in Sys B Failed to Drop Out When de-energized.Caused by Relay Bushing Wear Due to Vibration.Relay Replaced.Tests Will Be Conducted Weekly (← links)
- 05000029/LER-1981-033, Forwards LER 81-033/03L-0 (← links)
- 05000029/LER-1981-032-03, /03L-0:on 811203,relay 4C in Low Main Coolant Flow Sys Failed to Drop Out When de-energized.Caused by Bushing Wear Due to Mechanical Vibration.Relay Replaced (← links)
- 05000029/LER-1981-032, Forwards LER 81-032/03L-0 (← links)
- 05000029/LER-1981-029-01, /01T-1:on 811105,low Main Coolant Flow Sys 3 Undercurrent Relays Failed to Drop Out When de-energized. Caused by Bushing Wear Due to Mechanical Vibration.Plunger Bushings to Be Replaced & Surveillance Frequency Increased (← links)
- 05000029/LER-1981-029, Forwards LER 81-029/01T-1 (← links)
- 05000029/LER-1981-031-03, /03L-0:on 811119,low Main Coolant Flow Sys Relay 4B in Sys a Failed to Drop Out When de-energized.Caused by Relay Bushing Wear Due to Mechanical Vibration.Relay Replaced & Tested Satisfactorily.Test Frequency Increased (← links)
- 05000029/LER-1981-031, Forwards LER 81-031/03L-0 (← links)
- 05000029/LER-1981-030-03, /03L-0:on 811111,primary Vent Stack Gaseous & Iodine Radiation Monitor Rate Meters Failed High & Channel Inoperable for Approx 9.6-h.Caused by Moisture in Detectors Due to Need to Bypass Dryers Because of Low Flow Condition (← links)
- 05000029/LER-1981-030, Forwards LER 81-030/03L-0 (← links)
- 05000029/LER-1977-054-03, /03l-0:on 771205,during Surveillance Test Battery Cell of Battery Bank 1 Failed to Meet Acceptance Criteria of Tech Specs.Cause Unknown.Battery Replaced W/Spare & Recharged.Investigation Continuing (← links)
- 05000029/LER-1977-054, Forwards LER 77-054/03l-0.Detailed Event Analysis Encl (← links)
- 05000029/LER-1977-055-03, /03L-0:on 771217,during 12-h Shutdown for Operator Training,Dose Equivalent I-131 Concentration of Primary Coolant Sys Exceeded Tech Spec.Cause Assumed to Be Cladding Defect in Single Fuel Rod (← links)
- 05000029/LER-1977-055, Forwards LER 77-055/03L-0.Detailed Event Analysis Encl (← links)
- 05000029/LER-1981-020-03, /03L-0:on 810723,during Refueling Outage in Mode 5,setpoint of TDR1 & TDR2 Found to Be Out of Tech Spec Limit.Caused by Setpoint Drift.Setpoint Adjusted & Relays (Model SSC12PCA) Retested Satisfactorily (← links)
- 05000029/LER-1981-020, Forwards LER 81-020/03L-0 (← links)
- 05000029/LER-1990-001, :on 900308,bus Tie Breaker Tripped Unexpectedly When Breaker for HPSI Pump Manually Tripped as Part of Surveillance Testing.Cause Could Not Be Determined.Crossbar Buffer Assembly Readjusted (← links)
- 05000029/LER-1981-028-03, /03L-0:on 811015,battery Room 1 Halon Bottle Accidentally Discharged.Caused by Check Valve Assembly Turning at Bottle Instead of Solenoid Nut from Check Valve Fitting During Removal (← links)
- 05000029/LER-1981-028, Forwards LER 81-028/03L-0 (← links)
- 05000029/LER-1981-027-03, /03L-0:on 810915,while in Mode 1,primary Vent Stack Iodine Radiation Monitor Ratemeter Failed.Caused by Moisture in Detector Due to Failure of Air Dryer to Remove Moisture.Detector Dried & Drier Replaced (← links)
- 05000029/LER-1981-027, Forwards LER 81-027/03L-0 (← links)
- 05000029/LER-1977-043-03, /03L-0:on 770810,during Refueling,Pressurized Wide Range Level Scram Setpoint Discovered Out of Tolerance. Caused by Instrument Drift.Setpoints Were Readjusted (← links)
- 05000029/LER-1977-043, Forwards LER 77-043/03L-0 (← links)
- 05000029/LER-1977-041-03, /03L-0:on 780802,during Surveillance Testing, Diesel Generator 1 Overheated & Failed to Meet Acceptance Criteria.Caused by Young Radiator Co Radiator Tubes Being Blocked by Sludge & Scale.Radiator Cleaned (← links)
- 05000029/LER-1977-041, Forwards LER 77-041/03L-0 (← links)
- 05000029/LER-1981-025-03, /03L-0:on 810820,primary Vent Stack Gaseous & Particulate Radiation Monitor Ratemeters Failed.Caused by Moisture in Detector Due to Air Dryer Coolant Leak.Dryer Replaced.Review Continuing (← links)
- 05000029/LER-1981-025, Forwards LER 81-025/03L-0 (← links)
- 05000029/LER-1981-023-03, /03L-0:on 810811,surveillance Requirements Were Not Met for Health Physics Surveillance Schedule.Caused by Failure of Personnel to Insure Time Limit Was Met.Personnel Reminded of Responsibilities (← links)
- 05000029/LER-1981-023, Forwards LER 81-023/03L-0 (← links)
- 05000029/LER-1981-024-03, /03L-0:on 810813,valve EBF-MOV-557 Failed to Operate Electrically.Caused by Irregularities in Valve Operator Housing Allowing Water in & Forming Rust Which Prevented Proper Torque Switch Operation (← links)
- 05000029/LER-1981-024, Forwards LER 81-024/03L-0 (← links)
- 05000029/LER-1981-015-03, /03L-0:on 810627,during Refueling Outage, Pressurizer Code Safety Valves SV-181 & SV-182 Found to Be Set Below Tech Spec Limit.Caused by Setpoint Drift.Setpoint Pressure Readjusted (← links)
- 05000029/LER-1981-015, Forwards LER 81-015/03L-0 (← links)
- 05000029/LER-1982-044-03, /03L-0:on 821208,continuous Flow Discovered Through Alarm Check Auxiliary Valve After Special Hazards Header Flow Alarm Received.Caused by Insufficient Seating Between Auxiliary Valve Seat & Disc.Valve Disc Replaced (← links)
- 05000029/LER-1982-044, Forwards LER 82-044/03L-0 (← links)
- 05000029/LER-1982-024, Has Been Canceled (← links)
- 05000029/LER-1982-037-03, /03L-0:on 821016,while Performing Type C Tests, TV-204 Determined to Be Leaking Past Seat.Cause Not Determined.Valve Disassembled for Insp & Cleaning (← links)
- 05000029/LER-1982-037, Forwards LER 82-037/03L-0 (← links)
- 05000029/LER-1982-032, Has Been Canceled (← links)
- 05000029/LER-1983-012, Supplemental LER 83-012/01T-1:on 830405,bonnet Stud Found to Have Failed on PR-MOV-191.Caused by Slight Leakage from Valve.Valve Replaced w/1 1/2-inch Pacific Model 5-31552-12-X Gate Valve (← links)
- 05000029/LER-1983-018-03, /03L-0:on 830518,body-to-bonnet Leak Found on Pacific Valve,Inc Valve 5A-V-603,causing 5 H Valve & Steam Generator Blowdown Monitor 3 Isolation.Caused by Failure of body-to-bonnet Joint Gasket (← links)
- 05000029/LER-1983-020-03, /03L-0:on 830524,during Performance of Safety Injection,Setpoint of Time Delay Relay 4 Found Out of Tech Spec Limits.Caused by Setpoint Drift.Setpoint Readjusted (← links)
- 05000029/LER-1983-019-03, /03L-0:on 830523,lightning Strike Caused Z-126 115 Kv Transmission Line at Harriman Hydro Station Switchyard to Open & Lock Out,Resulting in Loss of Continuity of Circuit (← links)
- 05000029/LER-1983-015-03, /03L-0:on 830506,during Mode 1 operation,Y177,115- Kv Line Opened for Routine Maint,Contrary to Tech Specs 3.8.1.1.a.Caused by Scheduled Maint Insp of 115-kV Transformers.No Corrective Action Necessary (← links)
- 05000029/LER-1983-016-03, /03L-0:on 830511,containment Isolation Valve TV-CI-401B & Steam Generator 2 Blowdown Monitor Isolated to Repair Gasket Leak.Caused by Bottom Flange Gasket Failure. Gasket Replaced (← links)
- 05000029/LER-1983-014-03, /03L-0:on 830429,while Performing Functional Test of Control Room Ventilation Fire Dampers Following Mod to Fire Detection Sys,One Damper Failed to Close.Caused by Failure of Heating Element (← links)
- 05000029/LER-1981-016-03, Diesel Generator Overheated & Failed to Meet Tech Spec Limits.Caused by Radiator Failure to Cool Diesel Engine.New Core Installed in Radiator & Satisfactorily Retested (← links)
- 05000029/LER-1981-016, Forwards Updated LER 81-016/03L-1 (← links)
- 05000029/LER-1981-026-03, /03L-0:on 810902,primary Vent Stack Gaseous Radiation Monitoring Ratemeter Failed High.Caused by Failed Electronic Component in Detector.Detector Replaced (← links)
- 05000029/LER-1981-026, Forwards LER 81-026/03L-0 (← links)
- 05000029/LER-1981-022-03, /03L-0:on 810803,primary Vent Stack Gaseous Radiation Monitor Failure Alarm Received.Moisture Identified in Detector Housing Rendering Channel Inoperable.Detector Removed,Dried & Returned to Svc (← links)
- 05000029/LER-1981-022, Forwards LER 81-022/03L-0 (← links)
- 05000029/LER-1981-012-99, /99X-0:on 810602,during Routine Surveillance, Discovered Continuous Environ Air Sampler Pumps 1 & 7 Not Running.Caused by Loss of Power to Monitor Pump Drive Motor When Local Util Performed Maint on Feeder Line (← links)
- 05000029/LER-1981-012, Forwards LER 81-012/99X-0 (← links)
- 05000029/LER-1981-019-03, /03L-0:on 810717,PR-SOV-90 Was Removed from Svc During Refueling Outage to Allow Piping Mod to Newly Installed Reactor Head Vent Sys.Mod Necessary Due to Design Deficiency Found During Stress Analysis (← links)
- 05000029/LER-1981-019, Forwards LER 81-019/03L-0 (← links)
- 05000029/LER-1981-007-03, /03L-0:on 810521,fire Protection Carbon Dioxide Sys Manhole 3 Was Taken Out of Svc.Caused by Need to Enter Manhole to Perform Upgrading of Feedwater Sys Combined W/ Toxicity of Carbon Dioxide (← links)
- 05000029/LER-1981-007, Forwards LER 81-007/03L-0 (← links)
- 05000029/LER-1981-017-03, /03L-0:on 810708,during Refueling,Boric Acid Mix Tank Concentration Found Below Tech Spec.Caused by Improper Venting of Boric Acid Transfer Pump While Connected to Shield Tank Cavity Recovery Sys.Operator Reinstructed (← links)
- 05000029/LER-1981-017, Forwards LER 81-017/03L-0 (← links)
- 05000029/LER-1981-018-03, /03L-0:on 810710,during Testing,Trip Valve (VD-TV-202) Leakage Exceeded Tech Spec.Caused by Buildup of Matl within Valve Body Preventing Seal Between Gate & Seat. Valve Cleaned.Actuator & Stem Replaced (← links)
- 05000029/LER-1981-018, Forwards LER 81-018/03L-0 (← links)
- 05000029/LER-1981-013-03, /03L-0:on 810616,O Ring Seals on Penetrations Failed to Hold Pressure.Caused by Loose Bolting on Penetration Flanges.Bolts Retightened & Penetrations Retested (← links)
- 05000029/LER-1981-013, Forwards LER 81-013/03L-0 (← links)
- 05000029/LER-1981-014-03, /03L-0:on 810617,trip Setpoint Found to Be Below Tech Spec Limit During Low Steam Generator Water Level Channel Calibr.Caused by Calibr Drift of Transmitter. Transmitter Recalibr (← links)
- 05000029/LER-1981-014, Forwards LER 81-014/03L-0 (← links)
- 05000029/LER-1981-010-03, /03L-0:on 810603,while in Mode 6,primary Vent Stack Gaseous Radiation Monitoring Channel Failure Alarm Was Received in Control Room.Caused by Natural End of Life of Temp Bypass Valve in Compressed Air Dryer.Dryer Replaced (← links)
- 05000029/LER-1981-010, Forwards LER 81-010/03L-0 (← links)
- 05000029/LER-1989-015, :on 891126,steam Generator Blowdown Continuous Composite Sampler Declared Inoperable & Analysis Not Done within 24 H.Caused by Failure to Follow Chemistry Procedures Correctly.Chemistry Personnel Counseled (← links)
- 05000029/LER-1981-011-99, /99T-0:on 810611,during Eddy Current Exam of Steam Generator 2,tubes K-41 & K-42 Were Found Degraded.Cause Unknown.Tubes Plugged (← links)
- 05000029/LER-1981-011, Forwards LER 81-011/99T-0 (← links)
- 05000029/LER-1981-008-01, /01T-0:on 810527,mechanical Damage to Fuel Cladding Discovered During Visual Exam of Fuel Assemblies for Core XIV-XV Refueling.Caused by Fretting Damage to Clad Due to Pin Vibration.Pins to Be Replaced W/Dummy Pins (← links)
- 05000029/LER-1981-008, Forwards LER 81-008/01T-0 (← links)
- 05000029/LER-1981-005-03, /03L-0:on 810502,during Plant Shutdown for Refueling & While Inserting Shutdown Rods,Rod 17 Became Inoperable & Would Not Scram Upon Loss of Stationary Gripper Coil Voltage.Caused by Bowed Zircaloy Control Rod Follower (← links)
- 05000029/LER-1981-005, Forwards LER 81-005/03L-0 (← links)
- 05000029/LER-1981-006-03, /03L-0:on 810502,during Testing,Steam Generator 1 Low Set Safety Valve MS-SV-409E Setpoint Found Low.Cause Unknown.Valve Readjusted (← links)
- 05000029/LER-1981-006, Forwards LER 81-006/03L-0 (← links)
- 05000029/LER-1981-001-03, /03L-0:on 810122,low Main Coolant Flow Sys B Under Current Relays 2A & 4C Failed to Drop Out When de-energized. Caused by Residue Buildup on Relay Activation Plunger.Relay Plungers in Sys a & B Inspected & Cleaned as Require (← links)
- 05000029/LER-1981-001, Forwards LER 81-001/03L-0 (← links)
- 05000029/LER-1977-031-03, /03L-0:on 770609,loop Seal Radiation Monitor Pegged at Low End of Scale.Caused by RM-40 Power Supply High Voltage Tripping.Voltage Adjusted (← links)
- 05000029/LER-1977-031, Forwards LER 77-031/03L-0 (← links)
- 05000029/LER-1977-015, Forwards LER 77-015/03L-0 (← links)
- 05000029/LER-1976-014-03, /03L-0:on 761216,during Performance of OP-4204, Monthly Test of Safety Injection Pumps,High Pressure Safety Injection Pump Shaft Housing Seal Found Leaking.Caused by Cut in Gasket.Defective Gasket Replaced (← links)
- 05000029/LER-1981-002-03, /03L-0:on 810211,two Cable Tray House Fire Detectors Gave False Alarms in Control Room.Caused by Condensation in Detector Completing Alarm Circuit.Detection Sys Replaced (← links)
- 05000029/LER-1981-002, Forwards LER 81-002/03L-0 (← links)
- 05000029/LER-1977-002-03, /03L-0:on 770107,during Monthly Test,Inboard Packing Gland of Low Pressure Pump 1 Found to Leak Excessively.Caused by Packing Deterioration.Pump Removed from Svc,Repacked & Satisfactorily Test Run (← links)
- 05000029/LER-1977-002, Forwards LER 77-002/03L-0 (← links)
- 05000029/LER-1977-003-03, /03L-0:on 770110,primary Vent Stack Monitor Particulate Channel Failed to Meet Acceptance Criteria of Channel Functional Test.Caused by Drifting of Instruments High Voltage.High Voltage Adjusted (← links)
- 05000029/LER-1977-003, Forwards LER 77-003/03L-0 (← links)
- 05000029/LER-1976-011-03, /03L-0:on 760907,slight Leakage Noted from Welded Nipple on Charging Pump 3 Discharge Heater Line.Caused by Failure to Allow 1/16-inch Pull Back Gap During Installation of Weld.Pump Isolated & Nipple Replaced (← links)
- 05000029/LER-1976-011, Forwards LER 76-011/03L-0 (← links)
- 05000029/LER-1976-013-01, /01T-0:on 761128,following Plant Trip from Power, Main Collant Pump 3 Inadvertently Restarted During Scram Recovery.Caused by Jammed Trip Mechanism on Air Circuit Breaker.New Trip Coil Installed (← links)
- 05000029/LER-1976-013, Forwards LER 76-013/01T-0 (← links)
- 05000029/LER-1976-004-03, /03L-0:on 761216,during Monthly Test,Hpsi Pump 1 Shaft Housing Seal Was Found to Leak Lightly.Caused by Cut in Gasket.Defective Gasket Replaced (← links)
- 05000029/LER-1976-004, Forwards LER 76-004/03L-0 (← links)
- 05000029/LER-1977-001, Forwards LER 77-001/03L-0 (← links)
- 05000029/LER-1979-010-04, /04X-0:on 790213,while Performing Insp on Air Sample Pump Station A-3,air Sample Pump Found Inoperative. Caused by Bearing Failure on Motor Shaft.Bearing Replaced (← links)
- 05000029/LER-1979-010, Forwards LER 79-010/04X-0 (← links)
- 05000029/LER-1979-014-03, /03L-0:on 790412,CA-V-688 Valve Failed Containment Leakage Rate.Caused by Crud on Valve Seating Surface.Valve Isolated,Cleaned,Retested & Returned to Svc (← links)
- 05000029/LER-1979-014, Forwards LER 79-014/03L-0 (← links)
- 05000029/LER-1978-012-03, /03L-1:on 780419,level of Primary Seal Tank Found to Be Decreasing at Faster Rate than Normal.Caused by Crack in Carbon Ring of Mechanical Seal.Seal Replaced (← links)
- 05000029/LER-1978-012, Forwards LER 78-012/03L-1 (← links)
- 05000029/LER-1979-012-03, /03L-0:on 790312,during Normal Operation & Monthly Surveillance,Relay TDC-2 Operated at 12.52-s.Caused by Sticky Relay Mounted as Integral Part of Time Delay Relay, Due to Dust Buildup.Relay Replaced (← links)
- 05000029/LER-1979-012, Forwards LER 79-012/03L-0 (← links)
- 05000029/LER-1979-013-03, /03L-0:on 790303,safety Injection Accumulator Nitrogen Pressure Increased to 15 Psig Due to Inadvertent ECCS Initiation.Cause Attributed to Wide Reset Action of Low Main Coolant Pressure Sensor.Sensor Reset (← links)
- 05000029/LER-1979-013, Forwards LER 79-013/03L-0 (← links)
- 05000029/LER-1979-011-03, /03L-0:on 790303,primary Vent Stack Opened While Increasing Coolant Temp During Normal Plant Startup.Caused by Water in Detector Housing.Corrected by air-drying Housing,Replacing Detector, & Heat Tracing Line (← links)
- 05000029/LER-1979-011, Forwards LER 79-011/03L-0 (← links)
- 05000029/LER-1979-008-03, /03L-0:on 790225,during Normal Startup After Maint Outage,While Withdrawing Control Rod Group A,Control Rod 2 Became Inoperable & Misaligned.Caused by Galling on Interface of Lift Latch Support Tube & Latch Guide Tube (← links)
- 05000029/LER-1979-008, Forwards LER 79-008/03L-0 (← links)
- 05000029/LER-1979-009-03, /03L-0:on 790226,while Preparing to Cool Down, Steam Dump Valve PC-V-102 Failed to Operate Per Tech Specs 3.6.2.Caused by Galling of Actuator Stem & Bushing.Actuator Refurbished,Tested & Returned to Svc (← links)
- 05000029/LER-1979-009, Forwards LER 79-009/03L-0 (← links)
- 05000029/LER-1978-026-03, /03L-0:on 780918,while Checking Primary Vent Stack Monitoring Equipment During Mode 1 Operation,Plastic Container Used to Collect Condensation from Primary Vent Stack Monitor Air Dryer Was Found Leaking (← links)
- 05000029/LER-1978-026, Forwards LER 78-026/03L-0 (← links)
- 05000029/LER-1978-025-03, /03L-0:on 780918,during Normal Operation,Source Check Failed to Give Proper Response While Performing Survillance on Main Coolant Sys Leakage Air Particulate Monitor.Caused by End of Life of Electron Tubes (← links)
- 05000029/LER-1978-025, Forwards LER 78-025/03L-0 (← links)
- 05000029/LER-1978-020-03, /03L-0:on 780804,during Unscheduled Shutdown While Performing Secondary Plant Chemistry,Steam Generator Blowdown Chloride Concentration Exceeded 0.5 Ppm.Caused by Phenomenon of Hideout in Steam Generators (← links)
- 05000029/LER-1978-020, Forwards LER 78-020/03L-0 (← links)
- 05000029/LER-1981-004-03, /03L-0:on 810416,steam Generator Narrow Range 3 Level Bistable Contacts 6 & 8 Did Not Completely Close During Testing.Caused by Formation of Oxidation Film on Contact Surfaces.Contact Surfaces Cleaned (← links)
- 05000029/LER-1981-004, Forwards LER 81-004/03L-0 (← links)
- 05000029/LER-1980-021-03, /03L-0:on 801111,plant Trip & Loss of Z-126 115-kV Transmission Line Occurred Due to Relay Action.Caused by Ground Fault on E-131 115-kV Line.Line Z-126 re-energized After 10 Minutes (← links)
- 05000029/LER-1980-021, Forwards LER 80-021/03L-0 (← links)
- 05000029/LER-1980-020-03, /03L-0:on 801101,primary Vent Stack Iodine Monitor Alarmed & Was Declared Out of Svc.Caused by Moisture in Sampled Air Exceeding Capacity of Unit Air Dryer.Detector Dried Out & Reinstalled (← links)
- 05000029/LER-1980-020, Forwards LER 80-020/03L-0 (← links)
- 05000029/LER-1980-019-03, /03L-0:on 801030,during Turbine Startup in Mode 2, Left Hand Throttle Valve Failed to Close Tightly Causing Turbine to Accelerate.Caused by Pilot Valve Failure.Left Hand Throttle Disassembled & Pilot Valve Replaced (← links)
- 05000029/LER-1980-019, Forwards LER 80-019/03L-0 (← links)
- 05000029/LER-1977-034-03, Testing of Pressurizer Code Safety valves,PR-SV-181 & 182 Found Open at Pressure Higher than Allowable.Caused by Setpoint Drift.Valves Adjusted & Retested to Verify Lifting Pressure (← links)
- 05000029/LER-1977-034, Forwards Updated LER 77-034/03L-0 (← links)
- 05000029/LER-1977-032-03, /03L-0:on 770611,during Surveillance testing,TV- 209 Containment Drain Line Trip Isolation Valve Failed to Close.Caused by Excessively Tightened Packing.Packing Probably Overtightened During Recent Containment Leak Insp (← links)
- 05000029/LER-1977-032, Forwards LER 77-032/03L-0 (← links)
- 05000029/LER-1976-008, Updated LER 76-008/010-0:on 760730,review of Rod Ejection Accident Analysis Revealed Error in Method Used for Core 11 Analysis.Caused by Error in Methods & Application of Analysis Codes.Sys of Documentation Control Initiated (← links)
- 05000029/LER-1977-020-03, /03L-0:on 770415,during Paper Replacement in Main Coolant Leakage Vapor Container Air Particulate Monitor Paper Drive Found Inoperative.Caused by Deterioration of Reduction Gears.Reduction Gears Rebuilt & Lubricated (← links)
- 05000029/LER-1977-020, Forwards LER 77-020/03L-0 (← links)
- 05000029/LER-1977-024-03, /03L-0:on 770428,loop Seal Discharge Radioactive Gaseous Monitor Indication Went to Zero.Caused by Drift in RM-40 Power Supply High Voltage.High Voltage Adjusted (← links)
- 05000029/LER-1977-024, Forwards LER 77-024/03L-0 (← links)
- 05000029/LER-1977-026-03, /03L-0:on 770518,control Room Received Low Flow Alarm on Primary Vent Stack Particulate Radiation Monitor Channel.Caused by Paper in Util Being Slightly Oversized & Boundup.New Roll of Paper Installed (← links)
- 05000029/LER-1977-026, Forwards LER 77-026/03L-0 (← links)
- 05000029/LER-1977-028-03, /03L-0:on 770530,noble Gas Monitor of Primary Vent Stack Radiation Detection Sys Failed.Cause Could Not Be Ascertained as Trouble Could Not Be Repeated After Alarm Reset (← links)
- 05000029/LER-1977-028, Forwards LER 77-028/03L-0 (← links)
- 05000029/LER-1977-027-03, /03L-0:on 770524,biannual Recalibr Performed on Two LPIS Accumulator Channels.Instruments Below Tech Specs Limit.Recalibr Adjustments Made to Bring Channels within Tech Specs Limit (← links)
- 05000029/LER-1977-027, Forwards LER 77-027/03L-0 (← links)
- 05000029/LER-1977-018-03, /03L-0:on 770326,steam Generator Chloride Concentration Increased to Max Level of 4 Ppm in Steam Generator 2,exceeding Tech Specs Limit (← links)
- 05000029/LER-1977-018, Forwards LER 77-018/03L-0 (← links)
- 05000029/LER-1977-014-03, /03L-0:on 770308,iodine Channel of Primary Vent Stack Radiation Monitoring Sys Failed to Meet High Level Count Rate Acceptance Criteria.Caused by Voltage Drift. Voltage Adjusted (← links)
- 05000029/LER-1977-014, Forwards LER 77-014/03L-0 (← links)
- 05000029/LER-1977-029-03, /03L-0:on 770603,during Mode 1,primary Vent Stack Radiation Detection Sys Particulate Channel Failed.Caused by Control Setpoint Being Set Too Close Together.Control Setpoint Readjusted (← links)
- 05000029/LER-1977-029, Forwards LER 77-029/03L-0 (← links)
- 05000029/LER-1976-012-01, /01T-0:on 761119,safety Injection Accumulator for Boron Was 30 Ppm Over Tech Specs & 80 Ppm Over Administrative Limits.Investigation Revealed That Std Sodium Hydroxide Titrant Had Concentrations Lower than Predicted (← links)
- 05000029/LER-1976-012, Forwards LER 76-012/01T-0 (← links)
- 05000029/LER-1976-005-03, /03L-0:on 760520,auxiliary Operator Noted Slight Leakage from Weld on Inlet Charging Pump 3 Relief Valve. Caused by Pullback Gap Not Allowed During Installation of Pipe & Vibration Induced Fatigue Failure (← links)
- 05000029/LER-1976-005, Forwards LER 76-005/03L-0 (← links)
- 05000029/LER-1977-013-03, /03L-0:on 770307,following Power Reduction to Identify Plug Leaking Condenser Tube,Chlorides in Steam Generators 1 & 4 Exceeded Tech Specs Limits.Caused by Chloride Concentration Buildup in Steam Generator (← links)
- 05000029/LER-1977-013, Forwards LER 77-013/03L-0 (← links)
- 05000029/LER-1977-012-03, /03L-0:on 770306,alarm Setpoint Adjustment of Radiation Monitor for Steam Generator Blowdown Found Defective.Caused by Alarm Setpoint Control Failure to Adjust.Control Replaced (← links)
- 05000029/LER-1977-012, Forwards LER 77-012/03L-0 (← links)
- 05000029/LER-1977-011-03, /03L-0:on 770301,emergency Diesel Generator 1 Starter Motor Failed During Surveillance Test.Caused by Armmature Shaft Being Broke.Starting Motor Replaced (← links)
- 05000029/LER-1977-011, Forwards LER 77-011/03L-0 (← links)
- 05000029/LER-1977-010-03, /03L-0:on 770224,light Leakage Found from Weld on Discharge Line of Charging Pump 3 at Inlet to Pump Relief Valve.Caused by Failure of Weld & Pipe Nipple.Piping Sections Replaced (← links)
- 05000029/LER-1977-010, Forwards LER 77-010/03L-0 (← links)
- 05000029/LER-1977-019-03, /03L-0:on 770402,radioactive Gaseous Waste Monitor Loop Seal Discharge Monitor Alarm Failed to Operate.Caused by Alarm Setpoint & Meter Pointer Contacts Being Corroded. Contacts Cleaned,Mylar Film & Protective Tape Replaced (← links)
- 05000029/LER-1977-019, Forwards LER 77-019/03L-0 (← links)
- 05000029/LER-1977-025-03, /03L-0:on 770503,when Component Cooling Radiation Monitor Channel Drawer Removed,Cables Dropped Into Uncovered High Voltage Power Supply Used for Loop Seal Discharge Monitor Causing Short Circuit & Failure of Monitor (← links)
- 05000029/LER-1977-025, Forwards LER 77-025/03L-0 (← links)
- 05000029/LER-1977-023-03, /03L-0:on 770425,net Decrease in Sys Vol Found. Sys Check Performed & Leaking Diaphragm Valve Discovered.Caused by Petroleum Based Substance on Valve. Diaphragm Replaced (← links)
- 05000029/LER-1977-023, Forwards LER 77-023/03L-0 (← links)
- 05000029/LER-1977-021-03, /03L-0:on 770420,air Mass Calculation Performed on 770419 Indicated That Significant Leak in Primary Containment Might Exist.Data Point Indicated That VC Air Pressure Had Fallen.No Leak Found,Reactor Cooled Down (← links)
- 05000029/LER-1977-021, Forwards LER 77-021/03L-0 (← links)
- 05000029/LER-1977-016-03, /03L-0:on 770318,during Routine Collection of Vapor Container Atmosphere Grab Sample,Snow Short Circuited Main Coolant Sys Leakage Continuous Air Particulate Monitor, Causing Room Indication to Drop to Zero (← links)
- 05000029/LER-1977-016, Forwards LER 77-016/03L-0 (← links)
- 05000029/LER-1977-008-03, /03L-0:on 770204,iodine Channel of Primary Vent Stack Radiation Monitoring Failed to Meet Count Rate Acceptance Criteria.Caused by Mechanical Stops Being Misaligned W/Detector.Stops Aligned & Tightened (← links)
- 05000029/LER-1977-008, Forwards LER 77-008/03L-0 (← links)
- 05000029/LER-1977-007-03, /03L-0:on 770204,accident-emergency High Level Radiation Monitor Failed to Pass Routine Operational Test. Caused by Test Source Lamp Failure to Actuate Alarm.Source Lamp Control Voltage Adjusted (← links)
- 05000029/LER-1977-007, Forwards LER 77-007/03L-0 (← links)
- 05000029/LER-1977-017-03, /03L-0:on 770324,following Plant Trip,Chlorides in Steam Generator 4 Exceeded Tech Specs Limits.Caused by Impurities Released in Bulk Water (← links)
- 05000029/LER-1977-017, Forwards LER 77-017/03L-0 (← links)
- 05000029/LER-1977-015-03, /03L-0:on 770311,reading of built-in Source Check of Main Coolant Leak Detection Vapor Container Air Particulate Monitor Found Indicating Low & Declared Inoperative.Caused by High Voltage & Control Drift (← links)
- 05000029/LER-1977-022-03, /03L-0:on 770421,steam Generator Chloride Concentration Increased to Max Level of 0.8 Ppm in All Four Steam Generators,Exceeding Tech Specs Limits.Caused by Chloride Entering Steam Generator in Feedwater Areas (← links)
- 05000029/LER-1977-022, Forwards LER 77-022/03L-0 (← links)
- 05000029/LER-1976-002-03, /03L-0:on 760210,auxiliary Operator Noted Leak in Weld on Reducer Discharge Header of Charging Pump 3.Caused by Vibration Induced Fatigue Failure,Due to Continuous Operation of Displacement Charging Pump (← links)
- 05000029/LER-1976-002, Forwards LER 76-002/03L-0 (← links)
- 05000029/LER-1976-005-30, /030-1:on 760520,weld on Inlet to Charging Pump 3 Relief Valve Found Leaking.Caused by Error in Installation of Pipe in Which Full 1/16 Inch Pullback Not Allowed (← links)
- 05000029/LER-1976-001-03, /03L-0:on 760204,slight Leakage from Charging Pump 3 Found in Two Areas,Relief Valve Discharge Flange & Pump Suction Tee to Valve Line Welds.Caused by Vibration Induced Fatigue Failure.Flange & Tee Replaced (← links)
- 05000029/LER-1976-001, Forwards LER 76-001/03L-0 (← links)
- 05000029/LER-1976-007-01, /01T-0:on 760624,investigation of RO 76-06 Revealed That Assumed Boron Concentration of LOCA Analysis Was Exceeded During Hydrostatic Leak Test of Reactor Vessel. Caused by Personnel Error.Personnel Reinstructed (← links)
- 05000029/LER-1976-007, Forwards LER 76-007/01T-0 (← links)
- 05000029/LER-1977-004-03, /03L-0:on 770114,charging Pump 2 Discharge Pressure Failed to Meet Tech Specs Surveillance Requirement. Caused by Requirements Based on Centrifugal Instead of Reciprocating Type Pump.Proposed Change Initiated (← links)
- 05000029/LER-1977-004, Forwards LER 77-004/03L-0 (← links)
- 05000029/LER-1977-006-03, /03L-0:on 770131,eight Temp Readout Points on Boric Acid Line Found Below Tech Specs Limit.Caused by Sys Evolutions Not Adequately Analyzed During Review of Westinghouse Sts.Proposed Change Initiated (← links)
- 05000029/LER-1977-006, Forwards LER 77-006/03L-0 (← links)
- 05000029/LER-1976-006-01, /01T-0:on 760624,during Normal Operation,Routine Safety Injection Tank Makeup Was Performed Per Plant Procedure.Acceptance Criteria Not Met.Caused by Change 117, Suppl 3,requiring Limits on Boron Concentration (← links)
- 05000029/LER-1976-006, Forwards LER 76-006/01T-0 (← links)
- 05000029/LER-1977-005-03, /03L-0:on 770116,vapor Container Drain Tank Level Transmitter Diaphragm Failed During Normal Operation.Caused by Transmitter Operating Between Crud Sensing Lines. Transmitter Replaced & Sensing Lines Cleaned (← links)
- 05000029/LER-1977-005, Forwards LER 77-005/03L-0 (← links)
- 05000029/LER-1977-009-03, /03L-0:on 770221,primary Vent Stack Monitor Particulate Channel Alarmed Due to Blown Fuse.Caused by Ledex Stepping Motor Failing to Advance Filter Paper Which Overloaded Driving Transistor.New Motor & Fuse Installed (← links)
- 05000029/LER-1977-009, Forwards LER 77-009/03L-0 (← links)
- 05000029/LER-1979-021-02, /02X-0:on 790911,during Maint Outage to Inspect Feedwater Piping as Required by IE Bulletin 79-13,welds Were Found Which Did Not Meet Code.Caused by Welding Process at Time of Fabrication.Welds Repaired or Replaced (← links)
- 05000029/LER-1980-015-03, /03L-0:on 800721,during Maint Outage,Yard Hydrant 11 & 18 Were Individually Removed from Svc to Repair Leaking Valves.Caused by Wearing of Fiber Disc & Seat Due to Valve Cycling.Valves Disc,Seat & Drain Replaced (← links)
- 05000029/LER-1980-015, Forwards LER 80-015/03L-0 (← links)
- 05000029/LER-1976-010-01, /01T-0:on 760830,during Review of Core 12 Analysis,Error Found in Figure 8-1 of Tech Specs.Caused by Gamma Heating Correction Omitted by Error in Application of Computer Codes (← links)
- 05000029/LER-1976-010, Forwards LER 76-010/01T-0 (← links)
- 05000029/LER-1976-003-01, /01T-0:on 760513,review of ECCS Analysis Found Error in Accident Analysis.Caused by Error in Assumption of Accident Analysis.Reanalysis Performed.Proposed Change to Tech Specs Submitted (← links)
- 05000029/LER-1976-003, Forwards LER 76-003/01T-0 (← links)
- 05000029/LER-1980-023-03, /03L-0:on 801227,nitrogen Regulator SI-PR-59 Output Pressure Noted Outside Tech Spec.Caused by Setpoint Drift of Regulator Pilot.Regulator Adjusted (← links)
- 05000029/LER-1980-023, Forwards LER 80-023/03L-0 (← links)
- 05000029/LER-1977-044-03, /03L-0:on 770817,observed That Leakage of Valves TV-211 & TV-408 Greater than Acceptable Limits.Caused by Worn Seat & Disc & Deteriorated Diaphragm,Respectively. Valve Seat & Disc Machined & Diaphragm Replaced (← links)
- 05000029/LER-1977-044, Forwards LER 77-044/03L-0 (← links)
- 05000029/LER-1980-022-03, /03L-0:on 801127,instrument Air Problems Resulted in Erratic Steam Generator Level Control.Caused by Personnel Error.Personnel Reinstructed (← links)
- 05000029/LER-1980-022, Forwards LER 80-022/03L-0 (← links)
- 05000029/LER-1980-018-03, /03L-0:on 801012,both Scram Contact Setpoints of Steam Generator 1 Found Below Tech Specs Limit.Caused by Design Deficiency in Sensing Line Which Did Not Allow Adequate Venting.Setpoint Adjusted (← links)
- 05000029/LER-1980-018, Forwards LER 80-018/03L-0 (← links)
- 05000029/LER-1980-017-03, /03L-0:on 801006,during Maint Outage While Performing Calibr of Steam Generator 2,low Steam Generator Water Trip Setpoint Was Found Operating Below Tech Spec Limits.Caused by Sensing Line Configuration Deficiency (← links)
- 05000029/LER-1980-017, Forwards LER 80-017/03L-0 (← links)
- 05000029/LER-1980-016-99, /99L-0:on 800731,during Shutdown Conditions & While Performing Fire Protection Sys Mods,Cable Tray House Sprinkler Sys Taken Out of Svc for 8-h.Cause Due to Sys Mods to Improve Sys.Sys Changed,Tested & Returned to Svc (← links)
- 05000029/LER-1980-016, Forwards LER 80-016/99L-0 (← links)
- 05000029/LER-1980-014-03, /03L-0:on 800709,during IE Bulletin 79-19 Surveillance,Leaks Found on Both Ends of CS-MOV-540.Caused by Weld Defects During Original Sys Installation.Welds Repaired & Successful Liquid Penetrant Examination Done (← links)
- 05000029/LER-1980-014, Forwards LER 80-014/03L-0 (← links)
- 05000029/LER-1980-005, Has Been Cancelled (← links)
- 05000029/LER-1989-014, :on 890925,plant Worker Entered High Radiation Area in Pipe Trench Under Primary Auxiliary Bldg Corridor W/O Wearing Alarming Dosimeter.Caused by Personnel Error. Worker Suspended for Three Days W/O Pay (← links)
- 05000029/LER-1980-013-03, /03L-0:on 800630,during Maint Outage in Mode 5, While Performing Class C Test on Trip Valve TV-401D,valve Leakage Exceeded Tech Spec Limits.Caused by Foreign Matl Under Valve Seat.Valve Isolated & Matl Removed (← links)
- 05000029/LER-1980-013, Forwards LER 80-013/03L-0 (← links)
- 05000029/LER-1950-029, Advises That LER 50-29/80-05 Was Not Used for 1980 (← links)
- 05000029/LER-1980-011-03, /03L-0:on 800407,during Maint Outage in Mode 5, Voltage Indication Lost for Fire Detection Sys.Caused by Failure of Voltage Indicating Light.Fire Patrol Established Until Sys Returned to Svc.Light Was Replaced (← links)
- 05000029/LER-1980-011, Forwards LER 80-011/03L-0 (← links)
- 05000029/LER-1980-010-03, /03L-0:on 800406,during Maint Outage in Mode 5, Fire Detection Sys Became Inoperable Due to Loss of Voltage. Caused by Loose Wiring Connections in Power Supply.Wiring Connectors Were Replaced.All Connectors Were Tightened (← links)
- 05000029/LER-1980-010, Forwards LER 80-010/03L-0 (← links)
- 05000029/LER-1980-012, Advises That IE Bulletin 79-17 Reporting Requirements for LER 80-12 Re Linear Indications Are No Longer Applicable. Internal Liquid Penetrant Examinations of Internal Surfaces Confirm No through-wall Defects (← links)
- 05000029/LER-1980-009-03, /03L-0:on 800307,during Maint Outage in Mode 5 While Performing Safety Injection Time Delay Verification procedure,TDC2 Setpoint Found Out of Tech Spec Limit.Caused by Setpoint Drift.Relay Adjusted to within Tech Spec Limit (← links)
- 05000029/LER-1980-009, Forwards LER 80-009/03L-0 (← links)
- 05000029/LER-1979-005-03, /03L-0 on 790214:while Performing Type C Test of TV-408,svc Water Leakage from Isolation Valve Exceeded Tech Spec.Caused by Foreign Matl Under Masoneilan 4 Inch Valve Seat.Valve Seat Cleaned & Retested Satisfactorily (← links)
- 05000029/LER-1979-005, Forwards LER 79-005/03L-0 (← links)
- 05000029/LER-1979-004-03, /03L-0 on 790206:Rod 6 Position Indicating Lights at 84,87 & 90 Inches Were Not Lit.Caused by Loose & Dirty Terminal Contact Surfaces.Contact Surfaces Cleaned & Tightened (← links)
- 05000029/LER-1979-004, Forwards LER 79-004/03L-0 (← links)
- 05000029/LER-1980-007-03, /03L-0:on 800128,during Cold Shutdown Mode 5,while Performing Operational Check of Safety Injection Accumulator switches,SI-SOV-56 Failed.Caused by Dirt on Valve Internals. Valve Replaced (← links)
- 05000029/LER-1980-007, Forwards LER 80-007/03L-0 (← links)
- 05000029/LER-1980-002-03, /03L-0:on 800116,during Normal Operation,Primary Vent Stack Iodine Monitor Failed.Caused by Natural end-of- Life of One Pump Motor Bearing.Pump Motor Replaced (← links)
- 05000029/LER-1980-002, Forwards LER 80-002/03L-0 (← links)
- 05000029/LER-1980-004-03, /03L-0:on 800119,during Scheduled Shutdown,While Performing Secondary Plant Chemistry,Steam Generators 1,3 & 4 Chloride Concentration Was Above 0.5 Ppm.Caused by Steam Generators Chemical Hideout.Generators Drained (← links)
- 05000029/LER-1980-004, Forwards LER 80-004/03L-0 (← links)
- 05000029/LER-1980-003-03, /03L-0:on 800118,while Performing Radioactive Source Inventory & Leak Testing Procedure,Discovered That 121.8 Uci of Cs-137 Sealed Source Had Not Been Inventoried or Leak Tested Since 781213.Caused by Procedural Failure (← links)
- 05000029/LER-1980-003, Forwards LER 80-003/03L-0 (← links)
- 05000029/LER-1980-008-01, /01T-0:on 800201,during Cold Shutdown Mode 5, Safety Injection Accumulator Nitrogen Valves SI-TV-604,605 & 605 Found Inoperable.Caused by Improper Wiring of Polarity Sensitive Time Delay Relays.Wiring Corrected & Tested (← links)
- 05000029/LER-1980-008, Forwards LER 80-008/01T-0 (← links)
- 05000029/LER-1980-006-03, /03L-0:on 800126,while Performing Safety Injection Safety Valve Setpoint Check Procedure,Safety Valve Failed to Open.Caused by Dirty Internals.Safety Valve Was Disassembled,Cleaned & Successfully Tested (← links)
- 05000029/LER-1980-006, Forwards LER 80-006/03L-0 (← links)
- 05000029/LER-1979-006-99, /99T-0 on 790219:fire Pump Running Alarm Received in Control Room & Leak Discovered.Caused by Uneven External Force Applied on Pipe by Trench Fill.Crack Sealed Using Compression Patch,Pressure Tested & Backfilled (← links)
- 05000029/LER-1979-006, Forwards LER 79-006/99T-0 (← links)
- 05000029/LER-1979-002-03, /03L-0 on 790122:following Plant Trip,Control Room Operator Found Rod 22 Failed to Drop Into Core from 87 Inches on the Scram & All Rods in Group Were Not within Plus/Minus 8 Inches.Caused by Crud Buildup After Refueling (← links)
- 05000029/LER-1979-002, Forwards LER 79-002/03L-0 (← links)
- 05000029/LER-1979-003-03, /03L-0 on 790112:during Unscheduled Shutdown,Steam Generator Chloride Concentration Exceeded 0.5 Ppm Tech Spec Limit.Caused by Steam Generators Chemical Hideout (← links)
- 05000029/LER-1979-003, Forwards LER 79-003/03L-0 (← links)
- 05000029/LER-1979-031-03, /03L-0:on 791130,during Normal Mode 1 Operation, Steam Generator 3 Blowdown Monitor Isolated to Repair Leaking Valve.Caused by Leaking Monitor Isolation Valve. Monitor Replaced (← links)
- 05000029/LER-1979-031, Forwards LER 79-031/03L-0 (← links)
- 05000029/LER-1979-001-03, /03L-0 on 790103:during Normal Operation,Filter Alarm on Containment Main Coolant Sys Leakage Air Particulate Monitor Was Received.Caused by Running Out of Victoreen Type HV-70 Part 841-1-164 Filter Paper (← links)
- 05000029/LER-1979-001, Forwards LER 79-001/03L-0 (← links)
- 05000029/LER-1978-032-03, /03L-0 on 781127:during refueling,CS-MOV-540 Was Isolated for Repair Which Removed Part of Flow Path as Required by Tech Specs.Caused by CS-MOV-540 Leakage Resulting from Unequal Expansion of Valve Internals (← links)
- 05000029/LER-1978-032, Forwards LER 78-032/03L-0 (← links)
- 05000029/LER-1978-033, Forwards LER 78-033/03L-0 (← links)
- 05000029/LER-1977-030-01, /01T-0:on 770608,while Performing LOCA Analysis for Core 13 Reload Submittal,Small Break Scenario Discovered Which Appeared More Limiting than Any Analyzed for Core 12. Caused by Errors in Accident Analysis (← links)
- 05000029/LER-1977-030, Forwards LER 77-030/01T-0 (← links)
- 05000029/LER-1978-033-03, /03L-0 on 781130:during Removal of Crud from Valve,Required Flow Paths Were Removed.Caused by Mgt Decision to Isolate Flow Path & Remove Crud to Reduce Safety Hazard (← links)
- 05000029/LER-1979-030-03, /03L-0:on 791109,during Safety Injection Accumulator Time Delay Verification Procedure OP-4630,TDC4 Setpoint Discovered to Be Beyond Tech Spec Limit.Cause Under Investigation.Temporarily Replaced Time Delay Relay (← links)
- 05000029/LER-1979-030, Forwards LER 79-030/03L-0 (← links)
- 05000029/LER-1979-029-03, /03L-0:on 791106,during Testing of post-accident Hydrogen Venting sys,HV-SOV-1 & 2 Failed to Seat Properly. Caused by Oil & Dirt Buildup on Valve Internals.Valves Cleaned,Inspected & Returned to Svc (← links)
- 05000029/LER-1979-029, Forwards LER 79-029/03L-0 (← links)
- 05000029/LER-1979-028-03, /03L-0:on 791105,timing Test Not Performed After Repair of Containment Isolation Valve.Caused by Personnel Error.Importance of Using Proper Procedures Pointed Out to Appropriate Personnel (← links)
- 05000029/LER-1979-028, Forwards LER 79-028/03L-0 (← links)
- 05000029/LER-1979-027-03, /03L-0:on 791105,during Plant Startup in Mode 3, post-accident Hydrogen Control Sys HV-SOV-1 & 2 Failed to Seat Properly.Caused by Oil & Dirt Buildup on Valve Internals.Valves Cleaned,Retested & Returned to Svc (← links)
- 05000029/LER-1979-027, Forwards LER 79-027/03L-0 (← links)
- 05000029/LER-1978-035-03, /03L-0 on 781217:during Testing,Primary & Demineralized Storage Tanks Inventory Decreased Below Tech Spec Min.Caused by Personnel Error (← links)
- 05000029/LER-1978-035, Forwards LER 78-035/03L-0 (← links)
- 05000029/LER-1980-001-03, /03L-0:on 800103,during Normal Operation in Mode 1,steam Generator Blowdown Radiation Monitor 2 Failed.Caused by Rate Meter Diode (CR5-1N936) Failure.Rate Meter Replaced (← links)
- 05000029/LER-1980-001, Forwards LER 80-001/03L-0 (← links)
- 05000029/LER-1979-033-03, /03L-0:on 791231,during Normal Operation,While Performing Chemical Shutdown Sys Operability Check,Position Indication Light Indicated CS-MOV-529 Was Not Travelling in Either Direction.Caused by Tight Packaging & Boron Buildu (← links)
- 05000029/LER-1979-033, Forwards LER 79-033/03L-0 (← links)
- 05000029/LER-1979-026-01, /01T-0:on 791026,computer Studies Revealed safety- Related Buses May Not Provide Required Voltage in Event of LOCA During Startup.Problem Exists When Main Generator Is Separated from Grid.Caused by Design Deficiency (← links)
- 05000029/LER-1979-026, Forwards LER 79-026/01T-0 (← links)
- 05000029/LER-1978-036-03, /03L-0 on 781222:during Unscheduled Shutdown, Chloride Concentrations of Steam Generators 1,2 & 4 Were Higher than Tech Spec Limits.Caused by Steam Generators Chemical Hideouts (← links)
- 05000029/LER-1978-036, Forwards LER 78-036/03L-0 (← links)
- 05000029/LER-1978-034-03, /03L-0 on 781205:during Test,Trip Valve TV-207 Leakage Exceeded Tech Specs Due to Foreign Matl in Valve Seat.Valve Was Cycled Under Pressure & Successfully Retested (← links)
- 05000029/LER-1978-034, Forwards LER 78-034/03L-0 (← links)
- 05000029/LER-1979-023-03, /03L-0:on 790930,480-volt Buses 4-1 & 5-2 Were de-energized.Caused by Need to Assure Personnel Safety While Installing Fire Barrier Foam (← links)
- 05000029/LER-1979-023, Forwards LER 79-023/03L-0 (← links)
- 05000029/LER-1979-019-04, /04X-0:on 790801,direct External Radiation Monitor at Station 9 Was Missing.Cause Unknown.No Corrective Action Planned Other than Replacement of Missing Monitor (← links)
- 05000029/LER-1979-019, Forwards LER 79-019/04X-0 (← links)
- 05000029/LER-1979-024-03, /03L-0:on 791004,during Maint shutdown,CS-MOV-540 Isolated for Repair,Keeping Flow Paths Inoperable.Caused by CS-MOV-540 Leaking by CS-MOV-540 Gate Valve Resulting in Insufficient Gate & Seat Contact.Gate Machined (← links)
- 05000029/LER-1979-024, Forwards LER 79-024/03L-0 (← links)
- 05000029/LER-1979-018-01, /01T-0 on 790727:informed of Deviation from Specified Value in Fuel Pin Pressure.Caused by Mfg Techniques.Mfg Changed Method of Prepressurization Employed at Fabrication Facility (← links)
- 05000029/LER-1979-018, Forwards LER 79-018/01T-0 (← links)
- 05000029/LER-1979-015, /00X-0 on 790501:during Collection of Direct External Radiation Monitors,Monitors at Stations 12 & 21 Were Found Missing.Cause of Loss Unknown.Monitors Replaced (← links)
- 05000029/LER-1979-016-03, /03L-0 on 790607:steam Generator B Lowdown Radiation Monitor Failed Low.Caused by Failure of pre-amp Unit in Monitor.Unit Replaced W/Spare & Channel Returned to Normal (← links)
- 05000029/LER-1979-016, Forwards LER 79-016/03L-0 (← links)
- 05000029/LER-1979-017-03, /03L-0 on 790607:steam Generator Blowdown Radiation Monitor Failed High.Caused by Failure of Rate Meter Unit Internal Circuits.Failed Printed Circuit Cards Replaced W/Spares & Channel Returned to Normal (← links)
- 05000029/LER-1979-017, Forwards LER 79-017/03L-0 (← links)
- 05000029/LER-1979-032-03, /03L-0:on 791211,during Normal Operation,Primary Vent Stack Particulate Radiation Monitor Failed.Caused by Normal Wear of Pump Motor Bearing.Pump Motor Replaced (← links)
- 05000029/LER-1979-032, Forwards LER 79-032/03L-0 (← links)
- 05000029/LER-1979-025-03, /03L-0:on 791019,bistable Setpoints Noted Operating Below Tech Specs Limit.Caused by Main Coolant Pressure Channel Bistable Calibr Drift.Setpoints Readjusted & Channel Design Change Developed (← links)
- 05000029/LER-1979-025, Forwards LER 79-025/03L-0 (← links)
- 05000029/LER-1979-022-03, /03L-0:on 790908,chloride Concentration in Steam Generators 3 & 4 Was Greater than 0.5 Ppm.Caused by Steam Generator Chemical Hideout.Steam Generator Blowdown Rate Was Increased & Steam Generators Drained & Refilled (← links)
- 05000029/LER-1979-022, Forwards LER 79-022/03L-0 (← links)
- 05000029/LER-1979-020-03, /03L-0:on 790813,during Leak Rate Surveillance Testing on VD-TV-202,leakage Past Upstream Isolation Valves Stopped Test.Caused by Leakage in Seat of One or More Valves.Valves to Be Tested on 790908 (← links)
- 05000029/LER-1979-020, Forwards LER 79-020/03L-0 (← links)
- 05000029/LER-1989-002, :on 890111,reactor Protection Sys Automatically Actuated.Caused by Voltage Fluctuation on Vital Bus Which Induced False High Startup Rate Scram Signal.Conditional Precautions Added to Operating Procedures (← links)
- 05000029/LER-1977-034-03, Testing of Pressurizer Code Safety valves,PR-SV-181 & 182 Found Open at Pressure Higher than Allowable.Caused by Setpoint Drift.Valves Adjusted & Retested to Verify Lifting Pressure (← links)
- 05000029/LER-1977-034, Forwards Updated LER 77-034/03L-0 (← links)
- 05000029/LER-1977-032-03, /03L-0:on 770611,during Surveillance testing,TV- 209 Containment Drain Line Trip Isolation Valve Failed to Close.Caused by Excessively Tightened Packing.Packing Probably Overtightened During Recent Containment Leak Insp (← links)
- 05000029/LER-1977-032, Forwards LER 77-032/03L-0 (← links)
- 05000029/LER-1977-020-03, /03L-0:on 770415,during Paper Replacement in Main Coolant Leakage Vapor Container Air Particulate Monitor Paper Drive Found Inoperative.Caused by Deterioration of Reduction Gears.Reduction Gears Rebuilt & Lubricated (← links)
- 05000029/LER-1977-020, Forwards LER 77-020/03L-0 (← links)
- 05000029/LER-1977-024-03, /03L-0:on 770428,loop Seal Discharge Radioactive Gaseous Monitor Indication Went to Zero.Caused by Drift in RM-40 Power Supply High Voltage.High Voltage Adjusted (← links)
- 05000029/LER-1977-024, Forwards LER 77-024/03L-0 (← links)
- 05000029/LER-1977-026-03, /03L-0:on 770518,control Room Received Low Flow Alarm on Primary Vent Stack Particulate Radiation Monitor Channel.Caused by Paper in Util Being Slightly Oversized & Boundup.New Roll of Paper Installed (← links)
- 05000029/LER-1977-026, Forwards LER 77-026/03L-0 (← links)
- 05000029/LER-1977-028-03, /03L-0:on 770530,noble Gas Monitor of Primary Vent Stack Radiation Detection Sys Failed.Cause Could Not Be Ascertained as Trouble Could Not Be Repeated After Alarm Reset (← links)
- 05000029/LER-1977-028, Forwards LER 77-028/03L-0 (← links)
- 05000029/LER-1977-027-03, /03L-0:on 770524,biannual Recalibr Performed on Two LPIS Accumulator Channels.Instruments Below Tech Specs Limit.Recalibr Adjustments Made to Bring Channels within Tech Specs Limit (← links)
- 05000029/LER-1977-027, Forwards LER 77-027/03L-0 (← links)
- 05000029/LER-1977-018-03, /03L-0:on 770326,steam Generator Chloride Concentration Increased to Max Level of 4 Ppm in Steam Generator 2,exceeding Tech Specs Limit (← links)
- 05000029/LER-1977-018, Forwards LER 77-018/03L-0 (← links)
- 05000029/LER-1977-014-03, /03L-0:on 770308,iodine Channel of Primary Vent Stack Radiation Monitoring Sys Failed to Meet High Level Count Rate Acceptance Criteria.Caused by Voltage Drift. Voltage Adjusted (← links)
- 05000029/LER-1977-014, Forwards LER 77-014/03L-0 (← links)
- 05000029/LER-1977-029-03, /03L-0:on 770603,during Mode 1,primary Vent Stack Radiation Detection Sys Particulate Channel Failed.Caused by Control Setpoint Being Set Too Close Together.Control Setpoint Readjusted (← links)
- 05000029/LER-1977-029, Forwards LER 77-029/03L-0 (← links)
- 05000029/LER-1977-013-03, /03L-0:on 770307,following Power Reduction to Identify Plug Leaking Condenser Tube,Chlorides in Steam Generators 1 & 4 Exceeded Tech Specs Limits.Caused by Chloride Concentration Buildup in Steam Generator (← links)
- 05000029/LER-1977-013, Forwards LER 77-013/03L-0 (← links)
- 05000029/LER-1977-012-03, /03L-0:on 770306,alarm Setpoint Adjustment of Radiation Monitor for Steam Generator Blowdown Found Defective.Caused by Alarm Setpoint Control Failure to Adjust.Control Replaced (← links)
- 05000029/LER-1977-012, Forwards LER 77-012/03L-0 (← links)
- 05000029/LER-1977-011-03, /03L-0:on 770301,emergency Diesel Generator 1 Starter Motor Failed During Surveillance Test.Caused by Armmature Shaft Being Broke.Starting Motor Replaced (← links)
- 05000029/LER-1977-011, Forwards LER 77-011/03L-0 (← links)
- 05000029/LER-1977-010-03, /03L-0:on 770224,light Leakage Found from Weld on Discharge Line of Charging Pump 3 at Inlet to Pump Relief Valve.Caused by Failure of Weld & Pipe Nipple.Piping Sections Replaced (← links)
- 05000029/LER-1977-010, Forwards LER 77-010/03L-0 (← links)
- 05000029/LER-1977-019-03, /03L-0:on 770402,radioactive Gaseous Waste Monitor Loop Seal Discharge Monitor Alarm Failed to Operate.Caused by Alarm Setpoint & Meter Pointer Contacts Being Corroded. Contacts Cleaned,Mylar Film & Protective Tape Replaced (← links)