Pages that link to "05000261/LER-2008-001, Regarding Appendix R Pathway Impassable Due to Lock Configuration"
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The following pages link to 05000261/LER-2008-001, Regarding Appendix R Pathway Impassable Due to Lock Configuration:
Displayed 3 items.
- 05000261/LER-2008-001 (redirect page) (← links)
- 05000261/LER-2010-009 (← links)
- 05000261/LER-2010-008 (← links)
- 05000361/LER-2008-003 (← links)
- 05000270/LER-2008-002 (← links)
- 05000261/LER-2001-001 (← links)
- 05000261/LER-1982-005, Forwards LER 82-005/01T-0 (← links)
- 05000261/LER-1982-013, Forwards LER 82-013/03L-0 (← links)
- 05000261/LER-1982-012, Forwards LER 82-012/03L-0 (← links)
- 05000261/LER-1982-011, Forwards LER 82-011/03L-0 (← links)
- 05000261/LER-1982-019, Forwards LER 82-019/01L-0 (← links)
- 05000261/LER-1981-002, Updated LER 81-002/01T-2:on 810113,review of Svc Water Sys Revealed Potential Unmonitored Release Path on Svc Water Return Lines from Containment for Hydrogen Vent Header Motor Coolers.Caused by Design Error.Sys Will Be Modifie (← links)
- 05000261/LER-1982-010, Forwards LER 82-010/01T-0 (← links)
- 05000261/LER-1981-008, Forwards LER 81-008/03L-0 (← links)
- 05000261/LER-1982-008, Forwards LER 82-008/03L-0 (← links)
- 05000261/LER-1982-009, Forwards LER 82-009/03L-0 (← links)
- 05000261/LER-1982-006, Forwards LER 82-006/01T-0 (← links)
- 05000261/LER-1982-007, Forwards LER 82-007/01T-0 (← links)
- 05000261/LER-1983-001, Forwards LER 83-001/01L-0 (← links)
- 05000261/LER-1982-018, Forwards LER 82-018/01L-0 (← links)
- 05000261/LER-1982-016, Forwards LER 82-016/03L-0 (← links)
- 05000261/LER-1983-003, Forwards LER 83-003/01T-0 (← links)
- 05000261/LER-1980-027, Updated LER 80-027/01T-1:on 801122,relay RT-9 in Reactor Protection Train a Failed to re-energize During Periodic Test of Reactor Protection Logic.Caused by Shorting of Lead Wire Connection to Coil Wires.Relay Replaced (← links)
- 05000261/LER-1982-001, Forwards LER 82-001/03L-0 (← links)
- 05000261/LER-1981-001, Updated LER 81-001/01T-1:on 810109,turbine Runback & Automatic Rod Withdrawal Block Protection Defeated W/Power Range Channel N41 Being Out of Svc.Caused by Improper Rod Drop Analysis.Administrative Controls Revised (← links)
- 05000261/LER-1982-015, Forwards LER 82-015/03L-0 (← links)
- 05000261/LER-1982-014, Forwards LER 82-014/03L-0 (← links)
- 05000261/LER-1980-030, Updated LER 80-030/03L-1:on 801202 & 03,charging Pumps A,B & C Discharge Line Pressure Gauge Tap Pipe Socklets Found Leaking.Caused by Sys Design Deficiencies Allowing High Vibration.Leaks Repaired & Design Modified (← links)
- 05000261/LER-1983-002, Forwards LER 83-002/03L-0 (← links)
- 05000261/LER-2023-002, Plant Trip During Reactor Protection System Testing (← links)
- 05000261/LER-2023-001, Condition Prohibited by Technical Specification Due to Missed Entry Into Limiting Condition for Operation (← links)
- 05000261/LER-1987-019-01, :on 870616,discovered That Thot & Tcold Reversed on RCS Loop 1.Caused by Inadvertent Reversal During Repair Work on Thot & Tcold Connections Inside Containment. Circuits Corrected (← links)
- 05000261/LER-1986-005-01, :on 860128,loss of Offsite Power Occurred Due to Deenergized Startup Transformer.Caused When Blown Fuse on Undervoltage Relay Led to Loss of Emergency Bus E-2. Hardware Changes Underway (← links)
- 05000261/LER-1986-014-02, :on 861222,reactor Tripped Due to hi-hi Level Turbine Trip in Steam Generator B.Caused by Failure of Feedback Linkage in Feedwater Regulating Valve B.Unit Placed in Hot Shutdown.Linkage Repaired (← links)
- 05000261/LER-1986-012, :on 860825,unit Experienced Pressurizer Low Pressure Reactor Trip from 13% Power.Caused by Over Boration of RCS When Emergency Boration Valve Inadvertently Left Open in Attempt to Stabilize Unit from Heater Drain Pump Trip (← links)
- 05000261/LER-1986-012-01, Forwards LER 86-012-01,revising Level of Reactor Power from Which Unit Tripped from 42% to 13%.Operating Mode Marked N as Recommended by NUREG-1022 (← links)
- 05000261/LER-1986-013-02, :on 860910,reactor Tripped on Low Steam Generator B Level & Steam Flow/Feedwater Flow Mismatch During Steam Generator Pressure Channel Testing.Caused by Personnel Error.Personnel Counseled (← links)
- 05000261/LER-1986-012-02, :on 860825,inadvertent Discharge of Excess Boric Acid Into RCS Resulted from Pressurizer Low Pressure Reactor Trip.Caused When Operator Inadvertently Left Emergency Boration Valve Open.Staff Counseled (← links)
- 05000261/LER-1987-001-02, :on 870316,Tech Spec 3.7.2.d 7-day Limiting Condition for Operation Re Inoperable Diesel Generator Exceeded & Reactor Taken Subcritical.Caused by Lengthy Maint.Diesel Generator B Repaired (← links)
- 05000261/LER-1987-002-03, :on 870318,while Subcritical,Reactor Tripped & Reactor Protection Sys Received Spurious P-7 Permissive Signal Actuating Shutdown Banks.Cause of Voltage Spike Not Determined.Reactor Returned to Power (← links)
- 05000261/LER-1986-010-01, :on 860324,generator Lockout Resulted in Turbine & Reactor Trips.Caused by Operators Not Knowing Turbine Governor Valves Part of Generator Trip Circuit.Maint Procedures Revised & Operators Informed (← links)
- 05000261/LER-1986-009-01, :on 860322,during Escalation in Power,Level in Steam Generator B Began to Swell,Resulting in Turbine Trip on hi-hi Level & Subsequent Reactor Trip.Caused by Transmitter Sensing Line Problems (← links)
- 05000261/LER-1986-008-02, :on 860307,determined That Test Procedure Omits Exercising Station Blackout Relays in Automatic Feedwater Pump Logic.Cause Unknown.Procedure OST-162 Will Be Revised to Ensure Components Tested (← links)
- 05000261/LER-1986-011-01, :on 860620,automatic Reactor Trip Initiated Due to Overpower Delta T Trip Signal.Caused by Unsoldered Wire Connection Between Two Variable Resistors in N-41 Circuitry. Loose Wire Soldered to Connection Pin (← links)
- 05000261/LER-1986-006, :on 860130,ESF Actuation Occurred During Plant Cooldown.Caused by Operator Failure to Block Safety Injection Signal Per Plant General Procedure GP-007.Plant Stabilized.Operator Counseled (← links)
- 05000261/LER-1986-004-01, :on 860122,nuclear Instrumentation Sys Power Range High Neutron Flux Signal Tripped Reactor.Caused by Personnel Error.Improvements Re Location of & Specific Info on Labeling Identified & Technician Counseled (← links)
- 05000261/LER-1986-001-02, :on 860107,determined That Single Failure on Either Safety Injection (SI) Pump Recirculation Valve Could Isolate SI Min Flow Recirculation Path to Refueling Water Storage Tank.Valves Modified (← links)
- 05000261/LER-1986-003-01, :on 860121,reactor Tripped on High Steam Generator Level in Steam Generator B.Caused by Technician Misaligning Connector Prior to Insertion.Personnel Cautioned.Design Reviews Being Conducted (← links)
- 05000261/LER-1986-002-02, :on 860115,during Test Procedure,Turbine Trip/ Reactor Trip Occurred Due to High Level in Steam Generator A.Caused by Either Personnel Error or Equipment Malfunction. Loose Connection on Test Jack Corrected (← links)
- 05000261/LER-1985-020-01, :on 850911,main Transformer Fault Pressure Signal Resulted in Generator Lockout/Turbine Trip & Subsequent Reactor Trip.Caused by Faulty Main Transformer C Supply Plug.Plug Replaced (← links)
- 05000261/LER-1985-023-01, :on 851118,discrepancy Identified Between Tech Spec Steam/Feedwater Flow Mismatch Test Requirement & Monthly Maint Surveillance Test MST-014.Caused by Failure to Verify Setpoints of Comparators (← links)
- 05000261/LER-1985-022-01, :on 850928,Exxon Nuclear Corp Informed Util of Error in Large Break LOCA Analysis Which Resulted in Peak Clad Temp Being Underpredicted.Reactor Power & High Flux Trip Setpoint Increased within New Limits (← links)
- 05000261/LER-1985-019-01, :on 850829,reactor Power Increased Above Nine Times Allowable Power Level Prior to Completion of ex-core Calibr Test,Contrary to Tech Spec 3.10.2.9.Calibr Test FMP-011 Revised (← links)
- 05000261/LER-1986-007-02, :on 860131,common Hydraulic Fluid Reservoir & Associated Tubing for Each Bank of Four Snubbers Observed to Be Empty.Caused by Improperly Tightened Fitting.Hydraulic Fluid Sys Will Be Pressure Tested (← links)
- 05000261/LER-1985-017, :on 850822,plant Tripped from 100% Power Due to Steam Flow Greater than Feed Flow Mismatch Coincident W/Low Steam Generator Level.Caused by Performing Procedures Out of Sequence.Procedural Guidance to Be Given (← links)
- 05000261/LER-1985-018-01, :on 850826,one F(Z)S(Z)Channel on Axial Power Distribution Monitoring Sys Discovered Inoperable Since 850824.Required Manual Scans Not Performed.Caused by Damage to Process Computer During Electrical Storm (← links)
- 05000261/LER-1985-016, :on 850810,reactor Trip Received from Overtemp Delta T Trip Signal.Caused by Loose Connection in Potentiometer for Loop 2 Circuitry.Faulty Potentiometer Replaced & Circuitry Checked (← links)
- 05000261/LER-1985-021-01, :on 850917,reactor Trip Occurred Due to False Low Reactor Coolant Flow Signal.Caused When Bistable for Loop 1 Was Tripped for Testing.No Cause for Voltage Spike Found (← links)
- 05000261/LER-1985-015-01, :on 850705,reactor Trip Occurred.Caused by Steam Generator Steam Flow Being Greater than Feed Flow Coincident W/Low Steam Generator Signal.Control Voltage Transformer Replaced (← links)
- 05000261/LER-1985-014-01, :on 850610,control Operator on Duty Left Shift Complement W/One Less Control Operator than Required by Tech Spec 6.2.3.a for Approx 15 Minutes Prior to Relief Control Operator Arrival (← links)
- 05000261/LER-1985-013-01, :on 850521,reactor Tripped on Two of Three lo-lo Level Signals from Steam Generator A.Caused by Operator Failing to Verify Isolation of Correct Transmitter. Level Transmitter LT-474 Returned to Svc (← links)
- 05000261/LER-1985-011, :on 850318,unit Received Reactor Trip & Safety Injection from Steam Line Differential Pressure Signal A. Caused by Ground Which Tripped Bus IB-9 Due to Leak on Blowdown Valve.Valve Repaired (← links)
- 05000261/LER-1985-012-01, :on 850308,two Halon Cylinders for Fire Protection Below Min Required Pressure,But Reported Satisfactory.Fire Watch Not Posted.Caused by Personnel Error.Fire Watch Provided & Cylinders Replaced (← links)
- 05000261/LER-1984-012-02, :on 841215,PORVs PCV-455c & 456 Inoperable While Plant Less than 350 Psig W/Bubble in Pressurizer. Caused by Error in Low Temp Overpressure Protection Sys Drawing & Operating Procedures (← links)
- 05000261/LER-1985-009-01, :on 850227,main Transformer Lightning Arrestor C Failed,Resulting in Turbine & Reactor Trip.Cause Not Determined.Lightning Arrester Replaced (← links)
- 05000261/LER-1984-011, :on 841129,leak Path Opened from Outside Containment to Outside Containment,Violating Containment Integrity.Caused by Opened Vent Valve Allowing Svc Water Line to Drain for Welding Repairs (← links)
- 05000261/LER-1985-005-02, :on 850109,reactor Trip Occurred at 14% Power in Steam Generator A.Caused by Turbine Trip.Feedwater Control Valves Observed & Determined to Be Stable (← links)
- 05000261/LER-1985-006-01, :on 850115,review of IE Bulletin 79-02/14 Seismic Restraint Work Identified Restraints That Made Tech Spec Required Sys Inoperable.Caused by Inadvertently Omitting Bulletin from Closeout Program (← links)
- 05000261/LER-1985-002, :on 850205,MSIV Design Deficiency Identified. Caused by Lack of Understanding of Valve Operation During Original Design.Msivs Modified (← links)
- 05000261/LER-1985-003-01, :on 850108,low Voltage Spike Occurred on Buses 4 & 9.Caused by Grounding Digital Metal Impact Monitoring Sys Through Oscilloscope to Plant Electrical Receptacle. Technician Counseled (← links)
- 05000261/LER-1985-004-01, :on 850108,reactor Trip Occurred Due to Steam Generator C Low Level Coincident W/Steam Flow/Feed Flow Mismatch Signal.Caused by Technician Equalizing Wrong Transmitter.Technician Counseled (← links)
- 05000261/LER-1985-001-02, :on 850104,weekly Surveillance Test Conducted on Diesel Fire Pump Batteries Not Completed within Allowed Interval.Caused by Personnel Error.Technicians Notified of New Surveillance Schedule (← links)
- 05000261/LER-1984-003-01, :on 840521,two Steam Generator Snubbers Being Tested Offsite Were Low on Fluid.Rear Monoball Bearing on One Steam Generator Snubber Failed at Less than Design Load. All Snubbers Rebuilt (← links)
- 05000261/LER-1981-002-01, /01T-3:on 810113,review of Svc Water Sys Revealed Potential Unmonitored Release Path to Environ.Caused by Lack of Radiation Monitoring on Svc Water Return Lines from Containment.Discharge Lines Modified (← links)
- 05000261/LER-1984-010-02, :on 841107,safeguards Actuation on Train a Occurred Due to Inadvertent Low Pressurizer Pressure Signal. Caused by Failure to Investigate Consequences of Removing & Restoring Loads.Label Plate Will Be Installed (← links)
- 05000261/LER-1985-010, :on 850301,reactor Tripped from 52% Power Due to Loss of Feed Flow to Steam Generator B.Caused by Air Line Separation from Feedwater Regulating Valve Due to Valve Vibrations.Valve Internals to Be Replaced (← links)
- 05000261/LER-1985-008, :on 850203,short Circuit on Terminal Board for Radiation Monitor R-21 Vacuum Pump Occurred.Caused by Decontamination Activities Using Pressurized Water.Faulty Circuit Isolated & Feeder Breaker Replaced (← links)
- 05000261/LER-1983-007-03, /03L-1:on 830429,during Testing of Pressurizer Porv,Valve RC-455C Failed to Meet Required Cycle Time & to Open Fully.Caused by Galling of Valve Plug to Cage.Valve Rebuilt.Stem Guide Bushing Installed (← links)
- 05000261/LER-1985-007-01, :on 850128,four 480-volt Undervoltage Relays on Emergency Buses E1 & E2 Discovered Out of Tolerance. Caused by Overly Restrictive Tech Spec Setpoint Description. Tech Spec Rev Requested (← links)
- 05000261/LER-1984-009, :on 840709,w/unit in Shutdown,During Annual Containment Pressure Channel Calibr,Review of as Found Data Revealed Nonlinear Error Over Range of Instruments.Caused by Personnel Error in Test Equipment Setup (← links)
- 05000261/LER-1984-008-01, :on 840626,condensate Storage Tank Level Transmitters LT-1454A & B Identified as Out of Calibr. Caused by Physical Jarring.Transmitters Recalibr (← links)
- 05000261/LER-1984-003-02, :on 840521,during Functional Testing of Steam Generator Snubbers,Rear Monoball Bearing Failed & Low Fluid in Snubbers Discovered.Bearing Failure Caused by Downward Rev After Mfg (← links)
- 05000261/LER-1984-002-02, :on 840427,w/unit Shut Down,Three Curtains in Fire Damper FD-12 Partially Failed Operational Surveillance Test.Caused by Error Due to Improper Identification of Dampers.Addl Damper Tested (← links)
- 05000261/LER-1984-006-01, :on 840621,safety Injection Signal Received. Caused by Inadequate Communication Between Two Instrument Crews During Calibr.Safety Injection Pump Breakers Racked Out (← links)
- 05000261/LER-1984-005-02, :on 840608,complete Circuit for Initiation of Safety Injection Due to High Steam Line Flow Coincident W/ Low Steam Line Pressure or Low RCS Average Temp Not Tested. Cause Not Stated.Testing Will Be Completed (← links)
- 05000261/LER-1984-004-02, :on 840606,second Quarter Fish Samples Not Taken within Allowed Interval.Caused by Offsite Personnel Error.Samples Subsequently Taken in Second Quarter.Tech Spec Surveillance Scheduling Procedure Revised (← links)
- 05000261/LER-1977-001, :on 770124,during Normal Operations Boric Acid Transfer Pump B Tripped Due to High Pump Motor Temp Cutout. Caused by Equipment Malfunction.Pump Balance Line Cleaned & Restarted (← links)
- 05000261/LER-1977-002, :on 770125,flow Paths from Boric Acid Storage Tanks Made Inoperable for Maint of Two Chemical & Vol Control Sys Valves.Caused by Personnel Error.Personnel Lectured to Ensure Tech Specs Understood (← links)
- 05000261/LER-1977-003, :on 770131,during Normal Operation,Boric Acid Transfer Pump B Tripped Due to High Pump Motor Temp Cutout. Caused by Improper Setting of Motor Temp Cutout.Motor Temp Cutout Reset.New Stator Installed (← links)
- 05000261/LER-1977-004, :on 770317,while Constant Axial Offset Control Out of Svc,Axial Flux Differences Not Logged as Required Per Plant Procedures.Caused by Failure to Maintain Log.Operating Procedures & Out of Svc Logs Combined (← links)
- 05000261/LER-1977-005, :on 770324,containment Spray Pump a Discovered Not in Svc.Caused by Personnel Error.Personnel Instructed to Review Applicable Tech Specs Re Equipment Required for Critical Plant Operations (← links)
- 05000261/LER-1977-006, :on 770326,during 0% Power,Valve V2-14A Failed to Open While Attempting to Feed Steam Generator a Through Valve W/Steam Driven Auxiliary Feedwater Pump.Caused by Binding Valve Seat Surfaces.Valve Recycled (← links)
- 05000261/LER-1977-007, :on 770422,isolation Valve for Compressed Air Supply Discovered Closed.Caused by Personnel Error.Valve Opened.Penetration Pressurized (← links)
- 05000261/LER-1977-008, :on 770424,control Rod N-9 Failed to Fall Into Core Following Power Reactor Trip.Caused by Drive Mechanism Malfunction.Shutdown Bank a Withdrawn & Realigned w/N-9.Rod Drop Test Performed (← links)
- 05000261/LER-1976-004, :on 760301,emergency Diesel B Failed to Assume Rated Capacity During Periodic Test.Caused by Galling of Injector Pump Plunger & Barrel Wall Resulting in Fuel Pump Failure to Cylinder 12 (← links)
- 05000261/LER-1976-005, :on 760303,normal & Emergency Dampers on Containment Fan Cooler HVH-4 Failed to Function.Caused by Operator Malfunction.Normal Supply Damper Alignment Adjusted & Lubricated.Emergency Damper Lubricated (← links)
- 05000261/LER-1976-006, :on 760312,reevaluation of LOCA Analysis by Westinghouse Indicated Possible Inaccuracies in Prediction of Peak Clad Temp.Caused by Oversight of Effect of Steam Generator Tube Plugging (← links)
- 05000261/LER-1976-007, :on 760402,no Current Flow Found in Primary Circuit 56 During Periodic Test on Boric Acid Heat Tracing. Caused by Maint Personnel Inadvertently Opening Heat Tracing Circuits 25 & 55 While Doing Repairs (← links)
- 05000261/LER-1976-008, :on 760404,rod L-9 Dropped Due to Loose Electrical Connector.Radial Tilt Induced Resulting in Operation in Degraded Mode.Caused by Electrical Connector at Rv Head Failing Open (← links)
- 05000261/LER-1976-009, :on 760404,radial Tilt Experienced Due to Xenon Imbalance.Caused by Previous Power Tilt Resulting from Dropped Rod L-9 Inducing Radial Xenon Tilt.Equilibrium Conditions Reestablished (← links)
- 05000261/LER-1976-010, :on 760404,total Cumulative Time Outside CAOC Limits Exceeded 1 Hr,Resulting in Operation in Degraded Mode.Caused by Xenon Imbalance Resulting in Radial Power Tilt.Pumps Vented & Seal Flow Reestablished (← links)
- 05000261/LER-1976-011, :on 760412,boric Acid Transfer Pump B Tripped. Caused by High Pump Temp Cutout.Setpoints Reduced to Approx 175 F & Pump Returned to Svc (← links)
- 05000261/LER-1976-012, :on 760501,reactor Brought to Criticality W/Control Rods Inserted Into Core Below Insertion Limits. Caused by Control Operator Failing to Recognize Criticality Being Approached (← links)
- 05000261/LER-1976-013, :on 760710,leads Removed from Battery B Rendering Battery Inoperative.Caused by Personnel Failing to Comply W/Tech Spec 3.7 Re Reactor to Be Noncritical to Render Gould Battery Inoperative for Maint (← links)
- 05000261/LER-1976-014, :on 760805,util Notified by Westinghouse of Recent Developments Re Westinghouse Safety Analyses for Peak Clad Temp.Adjustments to Operating Limits Made (← links)
- 05000261/LER-1976-015, :on 760817,auxiliary Feedwater Pump Discharge Valve V2-16A Failed to Open as Required.Caused by Valve Binded to Seat.Larger Capacity to Be Installed (← links)
- 05000261/LER-1976-016, :on 760807,total Cumulative Time Outside CAOC Target Band Exceeded 1 Hr Limit During Power Operation Below 90% Power.Caused by Return to Power Following Turbine Vibration Testing (← links)
- 05000261/LER-1976-017, :on 760908,during Performance of Periodic Test PT-10 on Containment Fan Cooler Unit HVH-4,normal & Emergency Dampers Failed to Function Properly.Caused by Improper Allignment of Linkage Arm (← links)
- 05000261/LER-1976-018, :on 761018,boric Acid Transfer Pump B Tripped by High Temp Cutout.Caused by Defective Stator & Worn Bearings. Low Discharge Pressure Indication Caused by Faulty Pressure Gauge.Pump Repaired (← links)
- 05000261/LER-1976-019, :on 761020,boric Acid Transfer Pump B Tripped Due to High Pump Motor Temp Cutout.Caused by Circuits EP2 & ES2 Being Set Too High & Pump Not Insulated Properly. Setpoints Reduced (← links)
- 05000261/LER-1976-020, :on 761117,small Pinhole Leaks Found on Three Canopy Seal Welds.Caused by Weld Degradation.Affected Surface Cleaned,Repair Welded & Nondestructively Examined (← links)
- 05000261/LER-1983-015-01, /01T-0:on 830622,w/unit at 80% Power,Increase in Total Primary Sys Leakage to 1.19 Gpm Identified.Caused by Defective Sensing Line Fitting.Abnormal Degradation of RCPB Declared on 830705.Fitting Replaced (← links)
- 05000261/LER-1983-012-03, /03L-0:on 830621,auxiliary Feedwater Pump Discharge Valve V2-16C Breaker Tripped During Performance of Periodic Test 22.1C.Cause Unknown.Circuit Breaker for V2-15C Immediately Reclosed & Valve Cycled (← links)
- 05000261/LER-1983-031-03, /03L-0:on 831130,two Containment Isolation Valves Failed to Close on Phase a Isolation Test & Fire Protection Valve FP-258,waste Disposal Valve WD-1728 & Second Valve Did Not Properly Isolate (← links)
- 05000261/LER-1983-030-03, /03L-0:on 831129,two Degraded Voltage Relays for Emergency Bus E-2 Found Out of Tolerance During Calibr. Caused by Instrument Drift.Instrument Calibr (← links)
- 05000261/LER-1983-032-03, /03L-0:on 831104,during Testing of Porvs,Valve PORV-456 Failed to Meet Required Cycle Time.Caused by Limit Switch Improperly Adjusted.Limit Switch Adjusted & Small Air Leak Repaired (← links)
- 05000261/LER-1983-029-03, /03L-0:on 831122,w/unit Shut Down for Steam Generator Insp Outage,Level Transmitter LT-928 Found to Be Out of Calibr.Caused by Instrument Drift.Transmitter Recalibr (← links)
- 05000261/LER-1983-028-01, /01T-0:on 831123,during Review of Steam Generator Eddy Current Insp Data Tapes,Two Tubes Appeared to Need Plugging.All Tubes W/Eddy Current Greater than 47% Mechanically Plugged (← links)
- 05000261/LER-1983-027-01, /01T-0:on 831103,while in Hot Shutdown,Cooling Coil Leaks Discovered on Containment Fan Coolers HVH-1 & HVH-3.Cause Not Stated.Coolers Being Repaired W/Ceramic Sealant Matl (← links)
- 05000261/LER-1983-026-01, /01T-0:on 831012,svc Water Leak Discovered on Containment Fan Cooler HVH-3.Caused by Corrosion/Erosion of Tube.Tube Repaired W/Ceramic Sealant Matl.Replacement of Cooler W/Stainless Steel Alloy Tubing Planned (← links)
- 05000261/LER-1984-001, :on 840126,source Range Detector Channel N-31 Failed High,Causing Shutdown Bank Trip.Caused by Detector Shorting Out.Detector Replaced (← links)
- 05000261/LER-1983-024-01, /01T-0:on 830916,Tech Spec Instantaneous Release Limit for Radioiodine Exceeded Through Plant Stack.Cause Not Stated.Equipment Which Provided Pathway Shut Down.Iodine Level Remained Normal During Testing (← links)
- 05000261/LER-1983-023-01, /01T-0:on 830905,primary to Secondary Leak in Steam Generator a Progressed Beyond Specs.Caused by Two Leaking Tubes & Contractor Error.Tubes Mechanically Plugged. Contractor Procedures Under Review (← links)
- 05000261/LER-1983-016-03, /03L-0:on 830721,steam Driven Auxiliary Feedwater Pump Declared Inoperable Due to Potential Steam Binding Resulting from Feedwater Backleakage Through Discharge Valves V2-14A,V2-14B & AFW-19.Valves Repaired (← links)
- 05000261/LER-1983-033-03, /03L-0:on 831224,instrument Lines to Turbine First Stage Pressure & Steam Pressure Transmitters & Steam Driven Auxiliary Feedwater Pump Discharge Pressure Switch Froze. Caused by Cold Weather (← links)
- 05000261/LER-1983-025-01, /01T-0:on 830926,svc Water Leak Discovered on Containment Fan Cooler HVH-2.Svc Water Isolated & Unit Declared Inoperable.Caused by Corrosion/Erosion of Coolant Tubing.Tube Bundle Repaired (← links)
- 05000261/LER-1983-021-03, /03L-0:on 830818,w/unit at 79% Power,Pressurizer Level Channel I (LC-459A) Failed Low.Caused by Inadvertent Deenergization of LC-459A During Routine Calibr of Other Instruments in Same rack.LC-459A Reenergized (← links)
- 05000261/LER-1983-013-03, /03L-0:on 830625,RCS Leak Rate Determined to Be 1.07 Gpm.Caused by Packing of Pressurizer Block Valve RC-536.Valve Will Be Repacked During Next Cold Shutdown (← links)
- 05000261/LER-1983-014-01, /01T-0:on 830704,svc Water Leak Discovered on Containment Fan Cooler HVH-2,resulting in Degradation of Containment Boundary Per IE Bulletin 80-24.Caused by Corrosion/Erosion of Cooler Tubing (← links)
- 05000261/LER-1983-022-01, /01T-0:on 830823,svc Water Leak Discovered on Containment Fan Cooler HVH-2.Svc Water Isolated.Caused by Defective Tube Bundle.Tube Repaired (← links)
- 05000261/LER-1983-019-03, /03L-0:on 830729,w/unit at 79% Power,Boric Acid Transfer Pump a Failed During Performance of Periodic Test 7.1A.Caused by Normal End of Component Life for Thermal Switch.Switch Replaced (← links)
- 05000261/LER-1983-009-03, /03L-0:on 830507,w/unit Shut Down for Steam Generator Insp Outage,Flow Transmitter FT-495,loop C Steam Flow Found Out of Calibr.Caused by Instrument Drift. Transmitter Recalibr & Returned to Svc (← links)
- 05000261/LER-1983-017-03, /03L-0:on 830729,steam Generator C Blowdown Isolation Valves FCV-1932A & B Found Leaking from Bottom Bonnet Flange.Caused by End of Gasket Life.Gaskets Replaced (← links)
- 05000261/LER-1983-010-01, /01T-0:on 830525,review of Eddy Current Data Revealed 137 & 206 Defective Tubes Identified in Steam Generators B & C,Respectively.All Defective Tubes Taken Out of Svc (← links)
- 05000261/LER-1983-008-03, /03L-0:on 830506,safety Injection Accumulator Level Transmitters Found Out of Calibr.Caused by Instrument Drift.Transmitters Recalibr & Replacement Mod Developed (← links)
- 05000261/LER-1983-020-01, /01T-0:on 830803,w/unit at 79% Power,Current Tech Spec Cooldown Curves Determined to Be in Error,Per Review of New Draft Curves Based on Analysis of Reactor Vessel Surveillance Capsule.Curves Revised on 830804 (← links)
- 05000261/LER-1983-005-01, /01T-0:on 830424,svc Water Booster Pump B Declared Inoperable Due to Loss of Bearing Oil.Caused by Bearing Oil Slinger Being Positioned Near Vent Hole.Pump Inspected & Oil Replenished (← links)
- 05000261/LER-1983-002-03, /03L-0:on 830215,safety Injection Pump a Tripped After Being Started for Routine Filling of Accumulators. Caused by Faulty Pump Breaker.Overcurrent Trip Device Replaced.Evaluation of Event Continuing (← links)
- 05000261/LER-1982-018-01, /01L-0:on 821213,at 81% Power,Low Temp Overpressure Protection Sys Pressure Transmitters Found Calibr Incorrectly.Caused by Calculational Error on Zero Adjust Correction on Initial 1978 Calibr Data Sheets (← links)
- 05000261/LER-1982-016-03, /03L-0:on 821103,containment Fan Cooler HVH-3 Failed to Restart During Periodic Test Performance.Caused by Defective Time Delay Relay in Motor Breaker Control Circuit.Time Delay Relay Replaced (← links)
- 05000261/LER-1983-003-01, /01T-0:on 830410,svc Water Leak Discovered on Containment Fan Cooler HVH-3.Caused by Corrosion/Erosion of Cooler Tubing.Leak Repaired (← links)
- 05000261/LER-1982-001-03, /03L-0:on 820129,TC-412B,dual Comparator - Loop 1, Overpower Delta-T,found Out of Acceptable Tolerance in Nonconservative Direction During Periodic Test 5.1.Caused by Defective Instrument supply.TC-412B Replaced,Calibr,Teste (← links)
- 05000261/LER-1982-003-01, /01T-0:on 820209,pressurization of Boron Injection Tank Header Pressure Indicator PI-934 Observed Exceeding Psig Required by Tech Specs.Caused by Failure of Operator & Safety Valve SI-857A to Relieve Pressure (← links)
- 05000261/LER-1981-031-01, /01T-0:on 811201,pressurizer Power Operated Relief Valve Block Valves Were Determined Not to Meet Design Specs. Valve Motor Operators Failed to Shut Valves Completely Following 811130 Transient.Block Valves Closed Manually (← links)
- 05000261/LER-1982-015-03, /03L-0:on 821019,during Performance of Periodic Test,Comparator LC-485A Found Inoperable.Cause Not Determined.Defective Comparator Replaced W/Spare Unit (← links)
- 05000261/LER-1982-014-03, /03L-0:on 821012,letdown Relief Valve CVC-203 Lifted & Did Not Reseat Completely.Cause of Valve Lifting Undetermined.Failure to Reseat Caused by Seat Damage Due to Valve Chatter.Valve Repaired & Returned to Svc (← links)
- 05000261/LER-1982-013-03, /03L-0:on 820923,svc Water Pump a Failed to Restart Following Periodic Test.Caused by Failed Control Power Fuses.Fuses Replaced & Pump Started & Retested (← links)
- 05000261/LER-1982-012-03, /03L-0:on 820906,at 94% Power,Letdown Relief Valve CVC-203 Lifted & Would Not Reseat.Caused by Water Hammer Due to Operator Error in Realignment of Charging Pump from Recirculation to Normal Operation.Operator Counseled (← links)
- 05000261/LER-1982-011-03, /03L-0:on 820811,double Disc Gate Valve SI-861A Failed to Open Fully During Startup.Caused by Deformation of Valve Disc Due to Disc Interspace Overpressurization Resulting from Sys Heatup.Valve Discs Replaced (← links)
- 05000261/LER-1982-019-01, /01L-0:on 821217,calculated That on 821122,boron Injection Tank Vol May Have Fallen Below Level Required by Tech Spec.Caused by Boiling & Draining of Recirculation Lines During Attempt to Dissolve Solidified Boric Acid (← links)
- 05000261/LER-1982-010-01, /01T-0:on 820803,control Rod Drive Mechanism for Rod L-11 Observed to Have Steam Leaking from 1/4-inch Vent Valve at Top.Caused by Vent Valve Being Improperly Torqued Shut During Repair in 1982 Outage (← links)
- 05000261/LER-1981-008-03, /03L-0:on 810225 While Performing Monthly Periodic Test CPL-PT-5.5,Hagan Signal Comparator Module Found Inoperable.Cause Not Stated.Comparator Replaced (← links)
- 05000261/LER-1982-008-03, /03L-0:on 820710,summator NM-412C Found Inoperable During Periodic Test 5.1.Caused by Summator Failing to Zero Output.Summator Replaced (← links)
- 05000261/LER-1982-009-03, /03L-0:on 820715 & 27,motor Operated Valve RHR-759A,RHR HX Discharge Valve a Failed to Open.Caused by Improper Setting of Motor Operator Torque Switch W/Insufficient Lubrication of Valve Stem & Packing (← links)
- 05000261/LER-1981-006-01, /01T-0:on 820715,motor Cooler Leak Found in Containment Fan Cooler HVH-2.HVH-2 Shut Down & Svc Water to Unit Isolated.Caused by Corrosion/Erosion of Cooler Tubing. Leak Repaired & Motor Coolers Will Be Replaced W/New Units (← links)
- 05000261/LER-1982-007-01, /01T-0:on 820717,during Plant Heatup from Refueling Outage,Primary to Secondary Leak in a Steam Generator Confirmed.Caused by Defective Weld.Leaking Welded Plug Removed & Mechanical Plug Installed (← links)
- 05000261/LER-1982-005-01, /01T-0:on 820628,during Refueling Shutdown,Main Steam Check Valve Discovered in Degraded Condition.Caused by Set Screws Loosened on Valve Disc Tail Pieces.All Three Valves Modified to Correct post-mod Deficiency (← links)
- 05000261/LER-1982-004-01, /01T-0:on 820426,insp of Steam Generators B & C Revealed 173 Defective Tubes.Total Was More than 1% of Total Number of Tubes,Placing Results in Category C-3.All Defective Tubes Mechanically Plugged (← links)
- 05000261/LER-1982-004, Forwards LER 82-004/01T-0 (← links)
- 05000261/LER-1979-034-03, Motor Operated Isolation Valve AFW-V2-16A in Auxiliary Feedwater Line to Steam Generator a Failed to Open During Monthly Periodic Test. Caused by Power Supply Breaker Trip on Previous Closure (← links)
- 05000261/LER-1979-034, Forwards Updated LER 79-034/03L-1 (← links)
- 05000261/LER-1982-033, Forwards LER 82-033/01X-1 (← links)
- 05000261/LER-1982-002-03, /03L-0:on 820207,condensate Measuring Sys Breaker HVH-1 Tripped During Periodic Testing.Caused by Reverse Rotation Due to Missing Discharge Damper Louver.Reverse Rotation Stopped.Damper Repairs Underway (← links)
- 05000261/LER-1982-002, Forwards LER 82-002/03L-0 (← links)
- 05000261/LER-1981-034-03, /03L-0:on 811211,loop 2 Steamline Pressure Channel Indicated Higher than Other Channels.Caused by Frozen Sensing Lines in Pressure Transmitter & Failure to Return Freeze Protection Circuit to Svc After Maint (← links)
- 05000261/LER-1981-034, Forwards LER 81-034/03L-0 (← links)
- 05000261/LER-1981-033-01, /01T-0:on 811228,error in Tech Spec Heatup & Cooldown Curves Found to Be Not Reported to Nrc.Caused by Administrative Reporting Failure & Errors in Calculation. Info Will Be Reported as Tech Spec Change by 820131 (← links)
- 05000261/LER-1981-033, Forwards LER 81-033/01T-0 (← links)
- 05000261/LER-1981-032-03, /03L-0:on 811205,boric Acid Transfer Pump a Tripped & Was Declared Inoperable.Caused by Error in Valve Lineup Procedure & Open Winding in Transfer Pump Motor. Procedure Revised & Motor Replaced (← links)
- 05000261/LER-1981-032, Forwards LER 81-032/03L-0 (← links)
- 05000261/LER-1981-029-03, /03L-0:on 811130,w/unit at Hot Shutdown,Leak Was Discovered in Chemical & Vol Control Sys.Caused by Failed bonnet-to-body Gasket on Valve CVC-291.Gasket Replaced (← links)
- 05000261/LER-1981-029, Forwards LER 81-029/03L-0 (← links)
- 05000261/LER-1981-030-03, /03L-0:on 811130,emergency Diesel Generator B Failed to Reach Rated Output Voltage Following Automatic Start Initiated by Safety Injection Signal.Caused by Faulty auto-voltage Adjust Reostat.Failure Due to Normal Wear (← links)
- 05000261/LER-1981-030, Forwards LER 81-030/03L-0 (← links)
- 05000261/LER-1981-028-03, /03L-0:on 811125,steam Generator low-low Level Trip & Alarm Bistables BS-494-A1 & BS-494-A2 Found to Be Inoperable During Periodic Test PT-5.5 W/Unit at Cold Shutdown.Caused by Failure of Instrument Channel LI-494 (← links)
- 05000261/LER-1981-028, Forwards LER 81-028/03L-0 (← links)
- 05000261/LER-1981-026-01, /01T-0:on 811120,primary to Secondary Leak of Approx 1.5 Gpm Found in Steam Generator A.Caused by Leaking Explosive Plug.Plant Shut Down,Plug Removed & Weld Repaired on 811127 (← links)
- 05000261/LER-1981-026, Forwards LER 81-026/01T-0 (← links)
- 05000261/LER-1981-025-03, /03L-0:on 811102,emergency Diesel Generator B Failed to Start Manually.Caused by Loss of Prime in Fuel Oil Sys,Possibly Due to Debris in Ball Check Valve.Generator Returned to Svc (← links)
- 05000261/LER-1981-025, Forwards LER 81-025/03L-0 (← links)
- 05000261/LER-1981-024-03, /03L-0:on 811028,heat Tracing for Motor Operated Valves on Discharge Line of Boron Injection Tank Found Failed.Caused by Short to Ground Resulting from Insulation Repairs.Personnel Cautioned Re Insulation (← links)
- 05000261/LER-1981-024, Forwards LER 81-024/03L-0 (← links)
- 05000261/LER-1981-023-03, /03L-0:on 811022,at 50% Power,Safety Injection Pump Started from Control Room for Routine Filling of Accumulators & Circuit Breaker Tripped.Cause Unidentified. No Further Action Considered Necessary (← links)
- 05000261/LER-1981-023, Forwards LER 81-023/03L-0 (← links)
- 05000261/LER-1981-022-03, /03L-0:on 811015,w/unit at 50% Power,Lower than Normal Temp Indication Noted on Strip Chart Recorder for Valves on Discharge Line of Boron Injection Tank.Caused by Broken Wire Splice in Heat Tracing Circuit 70 (← links)
- 05000261/LER-1981-022, Forwards LER 81-022/03L-0 (← links)
- 05000261/LER-1981-021-01, /01T-0:on 810925,w/unit at 50% Power,Group 2 Control Bank D Control Rods Were Inoperable & Reactor Shutdown Commenced.Caused by Faulty Input/Output Amplifier Printed Circuit Card in Control Rod Logic Cabinet (← links)
- 05000261/LER-1981-021, Forwards LER 81-021/01T-0 (← links)
- 05000261/LER-1980-009, Updated LER 80-009/01T-1:on 800414,primary to Secondary Leak of Approx 0.5 Gpm Detected in B Steam Generator,Exceeding Tech Spec Limit.Caused by Leaking Tubes.Leaks Repaired by Explosive Plugging (← links)
- 05000261/LER-1982-017-01, /01L-0:on 821104,w/unit at 80% Power,Operator Discovered Isolation Valve Tank Isolation Valve Closed.Cause Undetermined.Valve Locked Open & Procedures Changed to Ensure That Valve Remains Open (← links)
- 05000261/LER-1982-017, Forwards LER 82-017/01L-0 (← links)
- 05000261/LER-1983-011-03, /03L-0:on 830605,circuit Breaker for Boron Injection Tank Heater Channel B Tripped.Caused by Component Failure Due to Normal End of Life.Failed Heater Replaced (← links)
- 05000261/LER-1983-006-03, /03L-0:on 830427,during Testing of Spare Pump Installed to Replace Svc Water Pump A,Pump Tripped on Overcurrent.Apparently Caused by Internal Binding of Shaft as Result of Debris in Impeller Assembly (← links)
- 05000261/LER-1980-014, Updated LER 80-014/01T-1:on 800702,vendor Info Indicated That No Certification of Qualification Was Available for PVC Electric Cable Pigtails Used on Eight Penetrations.Cable Pigtails Meet Design Specs & Accident Requirements (← links)
- 05000261/LER-1981-007, Updated LER 81-007/01T-1:on 810122,potential Modeling Error in ECCS Model Used for LOCA Analysis Reported.Caused by Shift in Peak Clad Temp.New ECCS Analysis Performed in Aug 1981.No Impact on Public Health & Safety (← links)
- 05000261/LER-1981-020-03, /03L-0:on 810902,containment Spray Check Valve SI-890B & Associated Flow Path Declared Inoperable.Caused by Failure to Perform Post Maint Testing Prior to Startup Due to Oversight.Valve Tested.Procedures Will Be Revised (← links)
- 05000261/LER-1981-020, Forwards LER 81-020/03L-0 (← links)
- 05000261/LER-1981-019-03, /03L-0:on 810705,w/unit at 95% Power,Svc Water Booster Pump (Swbp) a Motor Tripped.On 810706,SWBP a Motor Tripped Again.Caused by Normal Wear of Motor Bearings & Possible Breaker Problem,Respectively (← links)
- 05000261/LER-1981-019, Forwards LER 81-019/03L-0 (← links)
- 05000261/LER-1981-018-03, /03L-0:on 810701,Channel I (PI-474) of a Steam Generator Steam Line Pressure Indicated High Compared to Two Redundant Channels.Caused by Throttled Root Isolation Valve MSV-14.Valve Reopened (← links)
- 05000261/LER-1981-018, Forwards LER 81-018/03L-0 (← links)
- 05000261/LER-1981-004-03, Primary Coolant Sys Leak Found.Caused by Sample Cooler Tube Bundle Leakage Due to Normal Wear.Bundle Replaced.Review of Maint Records Revealed No Generic Problems (← links)
- 05000261/LER-1981-004, Forwards Updated LER 81-004/03L-1 (← links)
- 05000261/LER-1981-016-03, /03L-0:on 810611,during Startup,Motor Driven Auxiliary Feedwater Pump a Tripped Due to Low Discharge Pressure While Feeding Steam Generators.Event Reoccurred on 810716.Caused by Backleakage Through Discharge Valve AFW-40 (← links)
- 05000261/LER-1981-016, Forwards LER 81-016/03L-0 (← links)
- 05000261/LER-1981-014-03, /03L-0:on 810523,discovered That Hagan Summator PM-446B Had Shifted Nonconservatively Approx 3%.Caused by Failure of Filter Capacitor Due to Normal Wear.Faulty Capacitor Replaced (← links)
- 05000261/LER-1981-014, Forwards LER 81-014/03L-0 (← links)
- 05000261/LER-1981-017-03, /03L-0:on 810619,auxiliary Feedwater Pump a Tripped on Low Discharge Pressure.Caused by Improper Throttle Setting of Discharge Valve.Valve Repositioned (← links)
- 05000261/LER-1981-017, Forwards LER 81-017/03L-0 (← links)
- 05000261/LER-1981-015-03, /03L-0:on 810525,computer Box FM-475 Found to Be Out of Acceptable Tolerances & Several Checkpoints Showed Erratic Readings During Loop a Steam Flow Channel Investigation.Caused by Two Worn Electronic Components (← links)
- 05000261/LER-1981-015, Forwards LER 81-015/03L-0 (← links)
- 05000261/LER-1981-013-03, Determined Containment Isolation Valves Not Tested in Required Manner.Seven of Eight Valves Functioning as Designed.Eighth Valve Tested & Shown Operable.Test Undergoing Revision (← links)
- 05000261/LER-1981-013, Forwards Updated LER 81-013/03L-1 (← links)
- 05000261/LER-2018-001, Valid Actuation of Emergency Diesel Generator (← links)
- 05000261/LER-1917-002, Regarding Plant Vital Area Security Vulnerability Discovered Without Compensatory Security Measures (← links)
- 05000261/LER-1917-001, Regarding Auxiliary Feedwater System Actuation During Surveillance Testing (← links)
- 05000261/LER-2016-005, Regarding Reactor Trip and Automatic System Actuation Due to Weather-Related Loss of Offsite Power (← links)
- 05000261/LER-2016-004, Regarding Reactor Trip During the Performance of a Visual Inspection of the Main Turbine Trip Block (← links)
- 05000261/LER-2016-003, Regarding Failure of Lake Robinson Tainter Gates to Fully Open During Performance of Functionality Testing (← links)
- 05000261/LER-2016-002, Unit No. 2, Regarding Unanalyzed Condition Related to Main Steam Line Break Inside Containment (← links)
- 05000261/LER-2016-001, Regarding Inoperability of Motor-Driven Auxiliary Feedwater Pumps Due to Insufficient Lube Oil Cooling (← links)
- 05000261/LER-2015-004, Regarding Refueling Water Storage Tank (RWST) Discharge Valve Failed to Close on Demand (← links)
- 05000261/LER-2015-003, Regarding Failed Surveillance on Station Battery Charger A-1 (← links)
- 05000261/LER-2015-002, Regarding Pressurizer Power Operated Relief Valve (PORV) Limit Switches Qualified Life Exceeded Due to Miscalculation (← links)
- 05000261/LER-2015-001, Regarding Reactor Protection and DC Electrical System Inoperability Due to Inadvertant Parallel Connection of Safety Trains (← links)
- 05000261/LER-2014-002, Regarding Technical Specification Violation Due to Incorrect Procedural Guidance (← links)
- 05000261/LER-2014-001, Regarding Reactor Trip Due to a Two-out-of-Three Logic Signal from Steam Generator Water Level Protection Train B Logic Matrix (← links)
- 05000261/LER-2013-001, Regarding Non-Environmentally-Qualified Splice Rendered Post Accident Monitoring (PAM) Instrumentation Channel Inoperable (← links)
- 05000261/LER-2013-002, Regarding Automatic Actuation of the Auxiliary Feedwater System Due to Main Feed Pump Trip (← links)
- 05000261/LER-2013-003, Regarding Reactor Trip on 4KV Bus Undervoltage During Load Transfer (← links)
- 05000261/LER-2011-001-01, Regarding Condition Prohibited by Technical Specifications When Non-Seismic System Was Aligned to Refueling Water Storage Tank Due to Regulatory Requirements Not Adequately Incorporated in Plant Documentation (← links)
- 05000261/LER-2012-004, For H.B. Robinson Unit 2, Regarding Reactor Tripped Due to a Turbine Trip Caused by a Feedwater Isolation Signal from Steam Generator B High Level (← links)
- 05000261/LER-2012-002, Regarding Unplanned LCO 3.5.4 Entry Due to RWST Alignment to Purification (← links)
- 05000261/LER-2012-003, Regarding a Plant Modification Interference with Operation of the Containment Wide Range Level Indicator (← links)
- 05000261/LER-2012-001, Regarding Technical Specification Required Plant Shutdown Due to Missed Surveillance and Operation Prohibited by Technical Specifications (← links)
- 05000261/LER-2011-002, Regarding Reactor Trip Due to a Failed Relay Coil on RCP-3-X(B) and Actuation of Auxiliary Feedwater System (← links)
- 05000261/LER-2010-007, Regarding Reactor Trip Due to a Degraded Connection on a Circuit Board in the Electro-Hydraulic Control Cabinet (← links)
- 05000261/LER-2010-006, Pressurizer Heaters Inoperable Longer than Allowed Due to Inadequate Procedure (← links)
- 05000261/LER-2010-005, Regarding Emergency Diesel Generator Inoperable Due to Inverter Failure (← links)
- 05000261/LER-2010-003, Potential Loss of Residual Heat Removal System Safety Function in Modes 3 and 4 Due to Void Formation (← links)
- 05000261/LER-2010-004, Regarding Clearance Error Results in the a Emergency Diesel Generator Becoming Inoperable (← links)
- 05000261/LER-2010-002, For H. B. Robinson, Unit 2, Regarding Plant Trip Due to Electrical Fault (← links)
- 05000261/LER-2010-001, For H.B. Robinson, Unit 2, Regarding Emergency Diesel Generator Inoperable in Excess of Technical Specifications Completion Time Due to Output Breaker Failure (← links)
- 05000261/LER-2009-003, For H.B. Robinson, Unit 2, Regarding Manual Reactor Trip Due to Failure of a Steam Generator Level Module (← links)
- 05000261/LER-2009-002, Failure to Complete Technical Specifications Required Action within the Allowed Completion Time (← links)
- 05000261/LER-2009-001, Regarding Emergency Diesel Generator Inoperable in Excess of Technical Specifications Allowed Completion Time (← links)
- 05000261/LER-2008-002, Regarding Manual Reactor Trip Due to High Turbine Vibrations (← links)
- 05000261/LER-2008-001, Regarding Appendix R Pathway Impassable Due to Lock Configuration (← links)
- 05000261/LER-2007-001, From H. B. Robinson Steam Electric Plant, Unit 2, Reactor Trip Due to a Loose Wire in the Main Transformer Monitoring Circuitry (← links)
- 05000261/LER-2006-001, Re Manual Reactor Trip Due to Failure of a Turbine Governor Valve Electro-Hydraulic Control Card (← links)
- 05000261/LER-2004-002, Entry Into Mode 3 with the Steam Driven Auxiliary Feedwater Pump Flowpath Inoperable (← links)
- 05000261/LER-2004-001, Regarding Both Trains of High Pressure Safety Injection Inoperable for Approximately 25 Minutes (← links)
- 05000261/LER-2003-003, Unit N0. 2, Regarding Discovery of Two New Appendix R Safe Shutdown Vulnerabilities (← links)
- 05000261/LER-2003-002, Regarding Failure of Automatic Containment Ventilation Isolation During Containment Pressure Relief (← links)
- 05000261/LER-2003-001, For H. B. Robinson Unit 2 Regarding Failure to Complete Technical Specifications Required Action within the Allowed Completion Time (← links)
- 05000261/LER-2002-001, From H.B. Robinson, Unit 2 Regarding Four Main Steam Safety Valves Failure to Meet Acceptance Criteria During Lift Pressure Testing (← links)
- ML082060198 (redirect page) (← links)
- 05000261/LER-2008-002, Regarding Manual Reactor Trip Due to High Turbine Vibrations (← links)