Pages that link to "05000247/LER-2011-001"
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The following pages link to 05000247/LER-2011-001:
Displayed 50 items.
- 05000247/LER-1986-012, :on 860325,discovered That Large Gas Decay Tank Releases Occurred Between 860303-17.Caused by Personnel Failure to Adhere to Procedure.Surveillance Test Revised to Withdraw Not Applicable Entry (← links)
- 05000247/LER-1986-015, :on 860521,excessive Leakage of Main Steam Safety Relief Valves Found.Caused by Damage to Valves During Secondary Plant Transient on 860501.Valves Refurbished (← links)
- 05000247/LER-1986-014, :on 860518,seismic Restraint SR-1092 Disconnected.Caused by Failure of Maint Procedure for Reactor Coolant Pump Seal Overhaul to Assure Reinstallation of SR-1092.Procedure Revised (← links)
- 05000247/LER-1987-001, :on 870121,while Unit at 98% Power,Plant Shutdown Initiated When Emergency Diesel Generator Svc Water Subsystem Declared Inoperable.Caused by Misalignment of Linkage Between Valves.Linkage Adjusted (← links)
- 05000247/LER-1986-031, :on 860916,during Preparation for Biweekly Rod Exercise Test,Reactor Manually Tripped Following Drop of Three Control Rods.Caused by Inadequate Electrical Jumper. Jumper Replaced (← links)
- 05000247/LER-1986-005, :on 860207,wiring,limit & Torque Switches in Certain Motor Operators Not Addressed in Environ Qualification Documentation.Affected Wiring,Limit & Torque Switches Replaced During Outage (← links)
- 05000247/LER-1986-003, :on 860117,partial Failure of Planned Test of Safety Injection Sys Occurred.Caused by Wear on Relay Latching Mechanism Which Reduced Clearance Between Latch Screw & Latch Plate.Screw Clearance Adjusted (← links)
- 05000247/LER-1986-013, :on 860501,discovered That Containment Electrical Penetration H66 Not Qualified to Function During Submergence.Cause Undetermined.Control & Power Cables Rerouted to Penetration H25 (← links)
- 05000247/LER-1986-030, :on 860812,both Inner & Outer Air Lock Doors Momentarily Opened at Same Time,Resulting in Loss of Containment Integrity.Caused by Closing Mechanism Turning Too Quickly.Door Maint Scheduled (← links)
- 05000247/LER-1986-029, :on 860806,two Attempts Made to Close Diesel Generator Output Breaker W/O Success.Caused by Loose Pin or Springs Holding Breaker Stabs in Place.Breaker Refurbished, Tested & Returned to Svc (← links)
- 05000247/LER-1986-028, :on 860804,results of Calibr of Refueling Water Storage Tank Level Instrumentation Showed Low Level Alarm Setpoint Above Specified Level Setting.Caused by Unsuitable Instrumentation (← links)
- 05000247/LER-1987-004, :on 870210,reactor Turbine Trip Occurred Due to Trip of Reactor Protection Train B.Caused by Personnel Error.Malfunctioning Breaker Cell Switch Subsequently Repaired (← links)
- 05000247/LER-1986-039, :on 861217,control Rod (Rod) BO6 in Control Tank D Found Misaligned from Demand Position by 20 Steps for 16 H Prior to Discovery.Cause Unknown.Personnel Counseled on Maint of Monitor (← links)
- 05000247/LER-1986-020, :on 860624,two Reactor Protection Sys hi-hi Containment Pressure Instruments Inoperable.Caused by Static Inverter Trip & Failure of Alternate Feed to Energize. Breakers & Static Inverter Returned to Svc (← links)
- 05000247/LER-1986-021, :on 860625,reactor Tripped Following Independent Electrical Overspeed Protection Sys (Ieops) Turbine Trip.Caused by Deficient Procedures Re Replacement of Defective Relays.Drawings Will Be Reissued (← links)
- 05000247/LER-1986-026, :on 860724,operation of Gaseous Effluent Monitoring Instrumentation Not in Accordance W/Tech Specs. Caused by Personnel Not Realizing That Inoperable Recorder Disabled Alarm Function.Operators Reinstructed (← links)
- 05000247/LER-1986-016, :on 860523,unplanned Actuation of Reactor Protection Sys Occurred.Caused by Personnel Error.Personnel Involved in Trip Reinstructed in Correct Performance of Procedure (← links)
- 05000247/LER-1987-003, :on 870202,during Planned Shutdown,Condensate Storage Tank Isolation Valve LCV-1158 Failed to Close in Required Time.On 870203,motor Driven Auxiliary Feedwater Pumps Failed Flow Test (← links)
- 05000247/LER-1986-027, :on 860802,main Boiler Feed Pump 22 Tripped on Low Automatic Stop Oil Signal.Caused by Excessive Drain Off Through Worn Thrust Bearing to Thrust Seal.Oil Tubing Installed to Increase Oil Supply (← links)
- 05000247/LER-1986-025, :on 860718,while Plant in Hot Shutdown,Loss of Instrument Air to Auxiliary Feedwater Sys Experienced.Caused by Inadvertent Breaching of Instrument Air Line.Alternate Air Supply Lines Established (← links)
- 05000247/LER-1986-022, :on 860630,low Level Alarm Setpoints for Refueling Water Storage Tank Level Transmitters Discovered Outside Low Level Setpoint Margin Spec.Barton Model 288 Will Be Replaced W/Foxboro Model N-823DP (← links)
- 05000247/LER-1986-012, :on 860303,sampling Analysis & Verification of Plant Vent Gas Release Rate Calculations Not Performed. Caused by Lack of Adherence to Surveillance Test Procedures for R-14 Monitor.Procedures Reemphasized (← links)
- 05000247/LER-1986-010, :on 860320,inadequacy of Alarm Response Procedure Re Line Break in Piping Penetration Area Discovered.Caused by Procedure Not Meeting Commitments from 730409 Submittal.Procedure Revised (← links)
- 05000247/LER-1986-007, :on 860307,plant Heated Above 200 F Although Listed Transmitters Not Resealed,Per Environ Qualification Requirements.Caused by Not Recognizing Environ Status Should Have Been Restored.Procedures Reviewed (← links)
- 05000247/LER-1986-008, :on 860205,discovered That Setpoints on Three Degraded Bus Voltage Relays on 480-volt Buses Not within Tech Spec Range.Caused by Setpoint Drift Due to Vibration, Temp Change & Aging.Relays Reset & Tested (← links)
- 05000247/LER-1986-018, :on 860606,battery Cell Voltage Determined to Be Below Min Acceptable Value at 123.54 Volts Dc & Battery Declared Inoperable.Caused by Defective Transistor in Voltage Regulator.Transistor Replaced (← links)
- 05000247/LER-1986-019, :on 860609,safety Injection Sys Actuated After Manual Reactor/Turbine Trip While One Main Boiler Feed Pump in Operation.Caused by Failed Bistable TC-412 I.Inoperable Pump Repaired & Bistable Replaced (← links)
- 05000247/LER-1986-017, :on 860528,safety Injection Actuation & Reactor Trip Occurred Due to Condenser Steam Dump Valves Opening. Caused by Erratic Steam Dump Controller PC-404 Output. Controller Recalibr (← links)
- 05000247/LER-1985-012, :on 850928,reactor Trip Occurred Due to Power Range High flux-low Level Trip Signal.Caused by Operator Failure to Block Trip Signal Although Permissive for Blocking Trip Existed.Condition Stabilized (← links)
- 05000247/LER-1986-032, :on 860922,daily Grab Sample of Containment Atmosphere Not Taken & Analyzed as Required by Tech Spec 3.1.F.1.b.6.Caused by Poor Communication Between Involved Personnel.Personnel Counseled (← links)
- 05000247/LER-1985-017, :on 851231,reactor Tripped on Low Pressurizer Pressure Due to Rapid Decrease in Pressure.Caused by Failure of Spray Valve PCV455A to Close Completely.Valve Isolated (← links)
- 05000247/LER-1986-011, :on 860322,low Level Alarm Setpoints for Transmitters LIC-921 & LT-920 Found Set Below Low Level Spec.Determination of Cause Pending.Transmitters Recalibr. Public Health & Safety Unaffected (← links)
- 05000247/LER-1986-009, :on 860315,LPSI Setpoint Found Out of Spec. Review of Cause Continuing.Instruments Calibr on 860315. Calibr Confirmed on 860319 (← links)
- 05000247/LER-1986-002, :on 860114,during Performance of Preoutage Test to Verify Steam Generator Safety Valve setpoints,3 of 20 Valves Found W/Setpoints Outside Specified Band.Caused by Setpoint Drift.Valves Adjusted & Retested (← links)
- 05000247/LER-1986-006, :on 860226,documentation to Substantiate Environ Qualification Thermocouple Cold Ref Junctions in Hydrogen Recombiner Sys Determined Unavailable.Cold Ref Junctions for Listed Thermocouples Sealed (← links)
- 05000247/LER-1985-011, :on 850927,hot Shutdown Completed Per Tech Specs Due to Proximity of Hurricane Gloria (← links)
- 05000247/LER-1985-009, :on 850920,short Circuit Between Phases of Main Transformer Caused Turbine Generator Trip.Caused by River Water Spray from Condenser Water Box Exhaust.Changes Made to Exhaust to Eliminate Spray (← links)
- 05000247/LER-1985-013, :on 851004,leakage Into Containment from All Sources Exceeded Tech Spec Limit of 10 Gpm for Combined Leakage.Source of Leakage Traced to Tube in Fan Cooler Unit Water Box.Tubing Replaced (← links)
- 05000247/LER-1986-004, :on 860131,during Safety Relief Valve Test, Setpoint Pressures of Valves Outside Range Permitted by Tech Specs.Caused by Combination of Erosion,Thermal Cycling & Setpoint Drift.Valve Maint Performed (← links)
- 05000247/LER-1985-015, :on 851024,two Boron Injection Tank Level Transmitters Found Out of Calibr During Surveillance Test. Caused by burn-in of Transmitters.Surveillance Test Frequency Increased (← links)
- 05000247/LER-1985-007, :on 850711,gap Identified Between Seismic Restraint & Collar Mounted on Vertical Pumps in Excess of Structural Drawing Specs.Caused by Relaxing of Horizontal Restraints to Correct Pump Misalignment (← links)
- 05000247/LER-1986-001, :on 860113,reactor Tripped on lo-lo Steam Generator Water Level Signal.Caused by Broken Internal High Pressure Oil Hose to Governor & Controls.High Pressure Oil Hoses Replaced (← links)
- 05000247/LER-1985-016, :on 851212,reactor Trip Occurred Due to Loss of Reactor Coolant Flow Signals from Reactor Coolant Loop 21. Caused by Failed Bistable in Instrument Channel Coincident W/Signal from Low Flow Instrument Channel (← links)
- 05000247/LER-1985-014, :on 851024,reactor Tripped Due to High Steam Generator Level.Caused by Operator Error,Including Inadequate Training & Operator inexperience.Long- & short-term Actions Planned (← links)
- 05000247/LER-1985-010, :on 850923,reactor Tripped During Restart. Caused by Operator Failure to Anticipate Steam Generator Swell at Time of Synchronization of Generator Output.Event & Measures Implemented Reviewed (← links)
- 05000247/LER-1985-008, :on 850821,daily Heat Balance Not Performed. Caused by Preoccupation W/Recovery from Transient Resulting from Rod Drop During Control Rod Insertion Test.Heat Balance Performed on 850822 (← links)
- 05000247/LER-1985-006, :on 850416,loss of Main Boiler Feedwater Pump 22 Initiated Reactor Trip on lo-lo Level Signal from Steam Generator 24.Caused by Reduction in auto-stop Oil Pressure. Pump Oil Sys Overhauled (← links)
- 05000247/LER-1985-005, :on 850326,main Boiler Feedwater Pumps 21 & 22 Tripped During Preplanned Power Descent.Probably Caused by Pressure Transient in Feedwater Sys.Positioner on Feedwater Regulating Valve Replaced & Valve Stroke Reset (← links)
- 05000247/LER-1984-025, :on 841219,fire Occurred at Generator Exciter End Seal Due to Seal Failure & Hydrogen Leakage.Caused by Solidified Boric Acid Preventing Suction Flow & Gas Binding of Pumps.Flushing Procedures Modified (← links)
- 05000247/LER-1984-024, :on 841218,erroneous Weld Channel Pressurization Line Connection Discovered.Caused by Personnel Error.Contractor QC Procedures Enhanced to Prevent Further Occurences (← links)