Pages that link to "05000455/LER-2013-001"
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The following pages link to 05000455/LER-2013-001:
Displayed 50 items.
- 05000455/LER-1986-003-10, :on 861216,Safety Injection Train 2B Rendered Inoperable by Closed & out-of-svc Safety Injection Pump 2B During Hot Standby (Mode 3).Caused by Cognitive Personnel Error.Mode Change Checklists Revised (← links)
- 05000455/LER-1986-001-11, :on 861120,component Cooling Pumps 2A & 2B Tripped Due to Pressure Spike Caused by Shutdown of Pump 2A. Event Caused by Personnel Error in Setting Relief Valve. Valve Repaired & Reinstalled (← links)
- 05000455/LER-1987-001-07, :on 870115,reactor Trip Occurred Due to Reactor Coolant Resistance Temp Detector (RTD) Failure.Caused by Loop C Cold Leg Temp Narrow Range RTD Failing to Low Resistance.Failed RTD Replaced & Recalibr (← links)
- 05000455/LER-1987-005-06, :on 870331,reactor Tripped Due to Spurious Actuation of Turbine Motoring Generator Trip Circuitry.Cause Unknown.Differential Pressure Switch Found Out of Tolerance But Unrelated to Event.Switch Replaced (← links)
- 05000455/LER-1988-069, :on 880615,diesel Generator Inoperable Due to Voltage Control Problems.Caused by a Failed Relay on pre-position Card in Voltage Control Circuit.Relay Replaced. Operability Surveillance Performed (← links)
- 05000455/LER-1988-107, :on 881005,2A Diesel Generator Failed to Reach Rated Speed & Subsequently Tripped on Incomplete Sequence. Caused by Intermittent Operation of 4EX3 Relay.Relay 4EX3 Removed & Replaced W/New Relay (← links)
- 05000455/LER-1987-004-06, :on 870221,shift Control Room Engineer Missed Tech Spec Action Requirement on Containment Isolation Valves.Valve Discovered Inoperable for 62 H.Caused by Personnel Error.Personnel Involved Counseled (← links)
- 05000455/LER-1988-001-02, :on 880212,feedwater Pump 2C Tripped on Overspeed & Efforts to Shed Load Unsuccessful.Caused by Failure of Digital Electrohydraulic Control Sys to Respond Properly & Defective Servovalve.Valve Replaced (← links)
- 05000455/LER-1988-011-08, :on 880923,surveillance Procedure Discovered to Be Inadequate in Verifying Operability of Containment Ventilation Isolation.Caused by Inadequate Procedure. Procedure Revised (← links)
- 05000455/LER-1987-003-05, :on 870217,both Trains of Essential Svc Water Makeup & Two Out of Three Trains of Nonaccessible Auxiliary Bldg Exhaust Ventilation Inoperable in Excess of Tech Specs Time Limits Due to Personnel Error (← links)
- 05000455/LER-1998-001-05, :on 980216,licensed Power Level Exceeded Due to Calorimetric Instrument Discrepancy.Rescaled SG Blowdown Totalizer Flow Recorder 1/2WX-040 for 0-360 Gpm & SG Blowdown Procedures Temporarily Revised (← links)
- 05000455/LER-1997-004-10, :on 970912,control Switch Was Functioning Backwards.Caused by Improperly Installed Actuator on Control Switch.Will Revise BHP 4200-46 to Include Specific Steps for Actuator Placement (← links)
- 05000455/LER-1997-003-08, :on 971010,reactor Trip Occurred,Due to age-related Failures of Redundant Power Supplies That Went Undetected by Alarm Sys.Modification to Power Supply Failure Alarm Will Be Submitted to TRC for Review (← links)
- 05000455/LER-1988-004-10, :on 880506,main Feedwater Pump 2C Tripped Due to Low Electrohydraulic Fluid Supply to Pump.Caused by Personnel Failing to Recognize Consequences of Returning Pump to out-of-svc Condition (← links)
- 05000455/LER-1988-006-08, :on 880602,reactor Trip Due to Control Rod Drop Caused by Intermittent Component Failure in Rod Drive Sys. No Root Cause Determined.All Degraded Fuses Identified in Rod Drive Power Cabinets & Replaced (← links)
- 05000455/LER-1987-019-03, :on 871002,reactor Tripped Due to Turbine Trip from High Steam Generator Level.Caused by Equipment Operator Opening Sys Auxiliary Transformer Instead of Main Power Transformer Disconnects.Operator Disciplined (← links)
- 05000455/LER-1988-005-08, :on 880506,Tech Spec Violation Occurred Due to Operational Mode Changes Made While Auxiliary Feedwater Pump Inoperable.Caused by Failure of Day Tank Low Level Switch to Generate Annunciator Actuation.Switch Replaced (← links)
- 05000455/LER-1987-015, :on 870829,feedwater Isolation (Fi) Actuated on high-2 Steam Generator Level.Caused by Personnel Error in Isolating Wrong Level Transmitter.Technician Disciplined, Level Transmitter Unisolated & Fi Signal Reset (← links)
- 05000455/LER-1998-007-04, :on 980821,operator Selected Wrong Test Switch & Actuated Containment Spray Train a Valves.Caused by Failure to Implement peer-check Administrative Guidance. Pre-job Briefs Emphasized with Supervisor.With (← links)
- 05000455/LER-1988-010-05, :on 880721,reactor Containment Fan Cooler 2A & Essential Svc Water Outlet Process Radiation Monitor 2C Alarmed.On 880727,sample Interval Exceeded 12 H Tech Spec Limit.Caused by Personnel Error (← links)
- 05000455/LER-1988-002-10, :on 880329,discrepancies Discovered in Unit Component Cooling Sys Surge Tank Instrumentation.Caused by Design Organization Error.Main Control Board Meters Labeled Correctly & Trip Switches Temporarily Disabled (← links)
- 05000455/LER-1988-003-07, :on 880329,diesel Generator 2B Inoperable. Caused by Incorrect P&Id.Caution Cards & Explanation Labels Hung in Main Control Room & Piping & Instrumentation Will Be Corrected (← links)
- 05000455/LER-1987-002-02, :on 870205,14 & 16,feedwater Isolation & Reactor Trip Occurred.Caused by Operator Inability to Control Westinghouse Model D-5 Steam Generator Levels During Low Power Transients.Strategies Developed (← links)
- 05000455/LER-1988-008-06, :on 880714,inadvertent Operation of Handswitch for Feeder Breaker Resulting in Reactor Trip Occurred.Caused by Personnel Error.Tailgate Sessions W/Operators to Discuss Event Will Be Conducted (← links)
- 05000455/LER-1988-004, :on 880506,main Feedwater Pump Tripped Due to Improper Isolation of Electrohydraulic Control Fluid Supply. Caused by Cognitive Personnel Error.Personnel Counseled & Procedures Revised (← links)
- 05000455/LER-1987-012, :on 870730,diesel Generator Failed to Reach Rated Speed within Required Time Limit.On 870731,diesel Generator 2B Tripped on Turbocharger Thrust Bearing Failure. Caused by Normal Wear.Turbocharger Replaced (← links)
- 05000455/LER-1988-001-08, :on 880212,feedwater Pump 2C Tripped Resulting in Loss of Inventory in Steam Generators & Reactor Trip on Low Steam Generator Level.Caused by Failure of Servovalve Which Allowed Governor Valve to Fail Open (← links)
- 05000455/LER-1988-007-09, :on 880603,operator Could Not Open Preheater Bypass Valve to Steam Generator C.Caused by Valve Failure Initiating Feedwater Flow Disturbance.All Licensed Operators Required to Read LER (← links)
- 05000455/LER-1997-001-08, :on 970315,Unit 2 Containment Drain Sys Was Clogged Due to Debris.Water Hose Used to clean-out Connection to Blast Blockage Clear & Floor Drain Oil Separator & Weir Box Was Checked & Cleaned (← links)
- 05000455/LER-1996-004-01, :on 960922,declared Source Range Detectors Inoperable W/Reactor Trip Breakers Closed.Caused by Poor Communications at Shift Turnover.Placed Source Range N32 Level Trip Switch Position to Normal (← links)
- 05000455/LER-1996-004-09, :on 960922,source Range Detector Had Been Placed in Bypass as Result of Spurious Radio Noise Induced Spiking.Caused by Poor Communications.Operators Will Receive Training on TS 3.3.1 (← links)
- 05000455/LER-1996-003-12, :on 960904,steam Generator Tubes Were Not Inspected During Outage.Caused by Inability of Operators to Properly Locate Fixtures.Database Corrected to Reflect Actual Tube Numbers (← links)
- 05000455/LER-1992-003-01, :on 920610,feedwater Alarm Received on Loop SG C,Resulting in Regulating Valve Failing Closed & Manual Reactor Trip.Caused by Failure of Valve Operator Diaphragm. Diaphragms Replaced & Torque Increased (← links)
- 05000455/LER-1992-005-01, :on 920813,discovered Lcoar Inadvertently Not Entered.Caused by Personnel Error.Operating Engineer Involved Was Counseled on TS Requirement for Extraction Steam Valves (← links)
- 05000455/LER-1996-001-09, :on 960326,unplanned ESF Actuation Occurred. Caused by Force of Relay Actuating & Fact Jumper Not Installed Securely.Operations Personnel Immediately Stabilized Plant & re-established Letdown Flow (← links)
- 05000455/LER-1992-005-10, :on 920814,discovered That LCO Action Requirement for Instrumentation,Turbine Overspeed Protection Never Entered During Work on Check Valve on 920813.Caused by Personnel Error.Surveillance Performed (← links)
- 05000455/LER-1992-026, :on 920610,feedwater Alarm Received on Loop C Sg,Sg Feedwater Regulating Valve Failed Closed & Manual Reactor Trip Initiated.Caused by Failure of Valve Operator Diaphragm.Diaphragms Replaced (← links)
- 05000455/LER-1992-004-09, :on 920614,Unit 2 Tripped on Source Range Flux Channel N32.Caused by Source Range Spiking Due to Lightning. Shift Control Room Engineer Consulted W/National Weather Svc (← links)
- 05000455/LER-1992-003-09, :on 920528,circulating Water Blowdown Radiation Monitor Declared Inoperable Due to Loss of Sample Flow Spiking Problems.Isotopic Repts Revised to Highlight Monitor Name & Time Sample (← links)
- 05000455/LER-1992-002-10, :on 920410,containment Ventilation Isolation Occurred Due to Voltage Transient.Caused by Lightning Strike.All ESF Actuations Reset (← links)
- 05000455/LER-1995-002-03, :on 950331,TS LCO Action Requirement Not Entered Prior to Valve Work.Caused by Personnel Error.Shift Supervisor Counselled & Work Request Approval Page Revised (← links)
- 05000455/LER-1992-001-11, :on 920228,2D SG Level During Shutdown Led to P-14 Signal & Feedwater Steam Isolation.Caused by Difficulty in Controlling SG Level at Low Power.Instability Correction to Be Made by Relocating Lower Taps (← links)
- 05000455/LER-1995-004-09, :on 950815,DG Post Maint Was Inadequate Due to Mgt Deficiency.Developed Procedure Which Verified Performance of Voltage Regulator & Governor Under Accident Transient Loading Conditions (← links)
- 05000455/LER-1991-005-09, :on 911107,low-2 Steam Generator Level Received on Steam Generator 2A Which Initiated Reactor Trip. Caused by Difficulty in Controlling Westinghouse D-5 Steam Generator Level.Level Instrument Taps Moved (← links)
- 05000455/LER-1991-003-11, :on 911026,experienced RCS Leak in Excess of TS Requirements.Caused by Failed Packing Associated w/2RC029C Valve.Packing on Subj Valve Replaced (← links)
- 05000455/LER-1991-004-13, :on 911030,spurious Train B Feedwater Isolation Signal Generated,Causing Tempering Line Flow Control & Downstream Isolation Valves to Close.Caused by Failure of Logic Card.Isolation Reset (← links)
- 05000455/LER-1990-006, :on 910930,reactor Containment Fan Cooler 2C Low Speed Breaker Did Not Close.Caused by Miscommunication & Procedural Deficiency.Procedure Revised to Include Emergency Exit Section (← links)
- 05000455/LER-1991-002-04, :on 910311,discovered That Local Leak Rate Test on Containment Emergency Hatch Not Performed within TS Required Time of 72 H.On 901111,Type B Tests Not Performed within 72 H.Caused by Procedural Deficiency (← links)
- 05000455/LER-1991-002-06, :on 910311,containment Emergency Hatch Surveillance Not Performed within 72 H After Test on Hatch. on 901111,Type B LLRT Not Performed within 72 H.Caused by Procedure Deficiency.Procedures Revised (← links)
- 05000455/LER-1995-002-09, :on 950331,extraction Steam Valve Was W/O Lcoar Entry Due to Personnel Error.Shift Supervisor Has Been Counseled on Responsibilities Re Work Request Authorization (← links)