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This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.
List of results
- 05000373/LER-1982-089-03, RCIC Turbine Tripped on Overspeed During Vessel Injection Cold Quick Start Test. Caused by Wear & Binding of Governor Valve.Valve Linkages Reassembled to Vendor Specs + (16:43:44, 26 May 2025)
- 05000259/LER-1990-017-01, :on 901122,relay Line Breaker Began Cycling from Closed to Open Causing Voltage Disturbance.Caused by Procedural Deficiency.Operations Personnel Attempted to Stabilize Relay Line by Following Recommendations + (16:43:48, 26 May 2025)
- 05000373/LER-1982-089, Forwards Updated LER 82-089/03X-1 + (16:43:56, 26 May 2025)
- 05000458/LER-1990-045, :on 901121,unplanned ESF Actuation Occurred During Surveillance Testing of Drywell Bypass Leakage Rate. Caused by Inadequate Procedural Steps in Surveillance Test Procedure.Hpcs Suction Path Automatic Transfer Performed + (16:44:01, 26 May 2025)
- 05000267/LER-1982-037-03, /03L-0:on 820921,27 & 29,hydraulic Oil Snubber HOS-14,main Steam Snubbers MSS-29 & MSS-258 & Cold Reheat Snubber CRS-262 Found Inoperable.Caused by Extended Length of Piston Stroke.Snubbers Tested & Reinstalled + (16:44:17, 26 May 2025)
- 05000318/LER-1981-019-03, /03L-0:on 810402 & 21 Emergency Diesel Generator 12 Output Breaker Failed to Close.Caused by Damaged Spring Charging Motor & Excessive Relay & Actuator to Switch Clearance.Clearances Checked Annually + (16:44:21, 26 May 2025)
- 05000369/LER-1981-025-01, /01T-0:on 810319,no Seismic Bracing or Calculations Found for 12 Reactor Bldg safety-related Electrical Cable Tray Hanger Stds.Cause Not Stated.Seismic Calculations Performed on Affected Hangers + (16:44:24, 26 May 2025)
- ML20065T314 + (16:44:26, 26 May 2025)
- ML20065T302 + (16:44:29, 26 May 2025)
- 05000361/LER-1982-120-03, /03L-0:on 820921,turbine electro-hydraulic Control Valves 2UV-2200 C & G Failed to Close Following Turbine Trip During Turbine Generator Excitation Testing.Caused by Mechanical Binding Between Valve Spindle & Bushing + (16:44:33, 26 May 2025)
- 05000458/LER-1990-044, :on 901119,div II Valves & Dampers Isolated When Breaker Opened Instead of Power Supply Breaker Causing Deenergization of Power Line Conditioner.Caused by Personnel Failure to Follow Procedure + (16:44:39, 26 May 2025)
- 05000458/LER-1990-043, :on 901119,unanticipated Safety Feature Actuation of Rha Sys a Sys & Control Bldg Emergency Filter Train Occurred.Caused by Error in Preparation of Retest Procedure.Personnel Will Receive Training + (16:44:41, 26 May 2025)
- 05000368/LER-1982-032-03, /03L-0:on 820930,pressurizer Relief Valve 2PSV- 4634 Found to Be Set Above Tech Spec Limit.Caused by Lack of Movement Over Long Period of Plant Operation.Valve Tested & Spring Compression Adjusted + (16:44:44, 26 May 2025)
- 05000364/LER-1990-005-01, :on 901216,total of 574 Tubes Previously in Svc Found to Be Defective Which Requires Insp Results to Be Classified as Category C-3 + (16:44:46, 26 May 2025)
- 05000361/LER-1982-123-03, /03L-0:on 820922,while in Mode 2,condensate Storage Tank T-120 Water Level Fell Below Tech Spec Limit, Rendering Tank Inoperable.Caused by Inadequate Makeup Water Control.Better pre-planning on Water Usage Discussed + (16:44:48, 26 May 2025)
- 05000325/LER-1990-024-01, :on 901124,one Reactor Bldg Ventilation Exhaust Damper Closed & Reactor Bldg Ventilation Supply & Exhaust Fans Tripped.Cause Under Investigation.Suppl to Rept Will Be Issued by 910331 + (16:44:52, 26 May 2025)
- 05000324/LER-1990-018-02, :on 901123,HPCI Steam Leak Detection Channel B Logic Blew & HPCI Sys Manually Isolated.Probably Caused by Blown Fuse & Loose Wire.Relay & Fuse Replaced + (16:44:55, 26 May 2025)
- ML20065T157 + (16:44:58, 26 May 2025)
- 05000333/LER-1990-035, :on 901115,three 3-inch Swing Check Valves Failed to Close During Testing Due to Corrosion & Silt Accumulation in Hinge Pin Mechanism.Valve Internals Replaced W/Stainless Steel Components + (16:45:09, 26 May 2025)
- 05000317/LER-1982-061-03, /03X-0:on 820926,pressurizer Level Deviated from Program Level During Normal Startup.Rcs Temp Swings of 10 Degrees Not Uncommon During Startup.Justification for Tech Spec Relaxation Reanalyzed + (16:45:11, 26 May 2025)
- 05000254/LER-1990-031, :on 901120,while Performing HPCI Turbine Area Temp Isolation Calibr,Setpoints of All Four Temp Switches Higher than Tech Spec Limits.Cause Not Determined.Switches Will Be Replaced & Calibr + (16:45:21, 26 May 2025)
- 05000281/LER-1990-005-03, :on 901120,rod Control Cluster Assembly M-12 Declared Inoperable Due to Mismatch Between Group & Rod Position Indication.Caused by Control Rod Positioned Two Steps from Bottom of Core + (16:45:23, 26 May 2025)
- 05000483/LER-1990-016, :on 901124,reactor Trip Occurred on Low Steam Generator Level Which Resulted from Turbine Trip on Spurious Moisture Separator Reheater High Level Signal.Caused by Vibration.Level Switch Inverted + (16:45:24, 26 May 2025)
- ML20065T039 + (16:45:28, 26 May 2025)
- ML20065T032 + (16:45:30, 26 May 2025)
- PM-80-109, Forwards Monthly Operating Rept for Oct 1980 + (16:45:32, 26 May 2025)
- 05000311/LER-1982-110-03, /03L-0:on 820926,no Indication of Seal Interspace Air Pressure Found on Containment Air Lock.Air Lock Also Failed Seal Leakage Test.Caused by Loose Pivot on Air Interlock Linkage.Leakage Caused by Failure of Seal Joint + (16:45:34, 26 May 2025)
- 05000318/LER-1981-017-03, /03L-0:on 810414,drain Line Accidentally Broken from Emergency Discharge of ECCS Pump Room Cooler 22.Caused by Dropped Tool Breaking Plastic Nipple.Scaffolding Checked to Ensure Required Toe Boards + (16:45:36, 26 May 2025)
- 05000282/LER-1990-017-01, :on 901121,discovered That Bus Duct Cooling Fan 11 Not Running & Supply Breaker Tripped,Resulting in Main Generator,Turbine & Reactor Trip.Caused by Inadequate Design.Supply Breaker Replaced + (16:45:38, 26 May 2025)
- 05000311/LER-1982-107-03, /03L-0:on 820923,axial Flux Distribution Went Out of Target Band Due to Turbine Load Reduction When Turbine Generator Stator Water Temp Increased.Temp Increase Caused by Clogged Ports on Valve Positioner 2ST1 + (16:45:40, 26 May 2025)
- 05000416/LER-1990-025, :on 901122,actuation of Reactor Protection Sys Occurred During Surveillance of Reactor Mode Switch.Caused by Diminishing Power Supply of Test Equipment.Evaluation Will Be Conducted + (16:45:42, 26 May 2025)
- 05000311/LER-1982-116-03, /03L-0:on 820927 & 28,RCS Subcooling Margin Monitor Failed.Caused by Malfunction of Computer Logic Board in Process Computer & Previous Repair of Computer, Respectively.Logic Board Replaced & Point Reset + (16:45:45, 26 May 2025)
- 05000440/LER-1990-034, :on 901125,discovered That Reactor Pressure Vessel Water Level Instrumentation Equalizing Valve Mispositioned.Caused by Personnel Error.Equalizing Valve Closed & Walkdown Performed + (16:45:57, 26 May 2025)
- 05000318/LER-1981-020-03, /03L-0:on 810407,containment Atmosphere Particulate Radioactivity Detector Failed.Caused by Cable to Junction Box Connector Failure Due to Conductor Stress Formed During Repair Resulting in Split Connector Block + (16:46:02, 26 May 2025)
- 05000353/LER-1990-020-02, :on 901119,primary Containment post-LOCA Radiation Monitoring Sys Declared Inoperable Due to Deficient Circuit Board in Three of Four Channels.Caused by Inadequate Design Review.Replacement Installed + (16:46:03, 26 May 2025)
- 05000352/LER-1990-026-01, :on 901118,full Reactor Scram Signal Generated on High Reactor Pressure Vessel Pressure of 1,033 Psig. Caused by Personnel Error.Operator Counseled & Event Will Be Included in Operator Training + (16:46:05, 26 May 2025)
- 05000272/LER-1982-075-03, /03L-0:on 820927 Pressurizer Level Channel III Read High.Channel Bistable Placed in Tripped Condition Constituting Operation in Degraded Mode.Cause Under Investigation.Supplemental Rept Will Be Submitted + (16:46:07, 26 May 2025)
- 05000373/LER-1982-121-01, /01T-0:on 821012,found HVAC Duct Hangers S-2065 & S-2049 Not Installed Per Design Drawing.Caused by Inadvertent Substitution of Tube Steel.Design Drawing Will Be Revised + (16:46:10, 26 May 2025)
- 05000272/LER-1982-072-03, /03L-0:on 820925,exhaust Fan 11 Drive Belts in Fuel Handling Area Discovered Broken & Fan 12 Belts Loose & Operating at Less than Normal Speed.Caused by High Ambient Temp in Vicinity of Fans.Belts Replaced + (16:46:12, 26 May 2025)
- 05000318/LER-1981-021-03, /03L-0:on 810412,transient Occurred Causing Pressurizer Pressure to Drop Below 2225 Psig.Caused by Excessive Injection of Boric Acid by Operator to Level Power Increase.Personnel Counseled + (16:46:15, 26 May 2025)
- ML20065S883 + (16:46:17, 26 May 2025)
- ML20065S876 + (16:46:19, 26 May 2025)
- 05000265/LER-1982-017-03, /03L-0:on 821001,small Leak Discovered in HPCI Sys Supply Steam Line Break Flange.Caused by Failed Flange Gasket.Gasket Replaced like-for-like During & Prior to Outage.Leakage Stopped W/Flange Bolt Adjustments + (16:46:21, 26 May 2025)
- 05000331/LER-1982-065-03, /03L-0:on 820929,during Normal Operation,Racking Mechanism Access Door for Breaker 1B-4401 Found Open.Cause Unknown.Access Doors for 1B-3401 & 1B-4401 Will Be Locked & Maint Procedures Changed + (16:46:25, 26 May 2025)
- 05000395/LER-1990-010, :on 901117,insp Revealed That Output Voltage Low & Slowly Degrading,Causing Trip of Breaker Supplying Protection Set I.Caused by Failure of Ferroresonant Transformer.Transformer Repaired + (16:46:32, 26 May 2025)
- 05000457/LER-1990-012-07, :on 901120,containment Fuel Handling Incident Radiation Monitor 2RT-AR011 Went Into High Alarm & Interlock Actuation,Initiating Isolation Signal.Caused by Component Failure.Detector Replaced + (16:46:35, 26 May 2025)
- ML20065S813 + (16:46:37, 26 May 2025)
- 05000317/LER-1982-057-03, /03L-0:on 820927,channel a Th Read 11 Degrees Low. Caused by Increased Resistance in Temp Detector 1-TE-112HA Possibly Due to Loose Connection in Containment.Input Removed from Channel a RPS + (16:46:39, 26 May 2025)
- 05000373/LER-1990-007, :on 900618,during Operating Surveillance,Rcic Turbine Tripped on Mechanical Overspeed.Caused by Contaminated Oil in Lube Oil Sys.Oil Sys Flushed,Oil Changed & Limit Switch Readjusted + (16:46:41, 26 May 2025)
- 05000237/LER-1982-041-03, /03L-0:on 820927,during Shutdown,Vacuum Breaker 2-1601-33F Found to Be Binding Suppression Chamber to Drywell Vacuum Breaker.Apparently Caused by Swollen Chevron Packing Seal.Packing Seal Replaced + (16:46:47, 26 May 2025)
- 05000302/LER-1990-005, :on 900329,util Found Operating Outside Design Basis.Caused by Oversight of A/E Performing Original RB Flood Level Calculation.Rb Instrumentation & Equipment Relocated to Higher Elevation + (16:46:51, 26 May 2025)