Search by property

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

• 05000271/LER-1975-020, :on 750927,reactor Protection Sys (RPS) Relay 5A-K3A Failed to Deenergize Upon Partial Closure of MSIV 2-86A.Caused by Failure of Limit Switch.Rps Relay Deenergized by Removing Control Power Fuse  + (07:23:53, 26 May 2025)
• 05000271/LER-1975-021, :on 751007,review Revealed That Tech Spec Surveillance Requiring Isotopic Analysis of Reactor Coolant Sample Inadvertently Signed Off for Month of Aug When Test Actually Not Performed.Caused by Clerk Error  + (07:23:55, 26 May 2025)
• 05000271/LER-1975-022, :on 751109,during Cold Shutdown,Valve 10-25B Control Room Position Indication Lights Indicated Valve Cycling from Full Open to Full Closed Position.Cause Unknown.No Corrective Actions Taken  + (07:23:57, 26 May 2025)
• 05000271/LER-1975-023, :on 751204,control Room Personnel Observed Flow Fault Alarm & Loss of Power Indication on Sample Pump Associated W/Containment Air Sampling Sys.Caused by Failed Bearing.Pump Replaced & Sys Returned to Svc  + (07:23:59, 26 May 2025)
• 05000271/LER-1975-024, :on 751212,LPCI Injection Valve V-10-25A Failed to Respond to Open Signal Generated from Remote Control Switch. Caused by a RHR HX Leaking Gasket on Fixed Tube Sheet to Shell Flange  + (07:24:01, 26 May 2025)
• 05000271/LER-1976-001-01, /01T:on 760118,both Channels of Aeog Radiation Monitors Read Abnormally Low Due to Purge Valve Stuck in Open Position.Caused by Solenoid Operated Purge Valve Failure to Release  + (07:24:02, 26 May 2025)
• 05000271/LER-1976-002-01, /01P:on 760126,voluntary Plant Shutdown Initiated as Safety Precaution to Evaluate Recent Info & Test Data of Primary Safety Containment Vessel.Further Evaluation Will Be Conducted  + (07:24:04, 26 May 2025)
• 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  + (07:24:06, 26 May 2025)
• 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  + (07:24:09, 26 May 2025)
• 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  + (07:24:11, 26 May 2025)
• 05000271/LER-1976-004-03, /03L:on 760214,control Room Personnel Observed Flow Fault Alarm & Loss of Power Indication on Sample Pump Associated W/Containment Air Sampling Sys.Caused by Failed Bearing.Motor Replaced & Sys Returned to Svc  + (07:24:13, 26 May 2025)
• 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  + (07:24:18, 26 May 2025)
• 05000271/LER-1976-005-01, /01T:on 760217,portion of Procedure Associated W/ Securing Plant from Shutdown Cooling Not Performed.Caused by Failure of Plant Personnel to Follow Appropriate Plant Procedure  + (07:24:20, 26 May 2025)
• 05000271/LER-1976-006-03, /03L:on 760225,low-low Water Switch Associated W/Differential Pressure Indicating Sensor 2-3-72A Actuated Below Tech Spec Min.Caused by Instrument Drift.Switch Adjusted  + (07:24:24, 26 May 2025)
• 05000271/LER-1976-007-03, /03L:on 760302,control Room Operator Observed Flow Fault Alarm,Full Closed Indication on Valve V-75-C1 & Loss of Power Indication on Containment Air Sampling Sys.Cause of Valve Closure Undetermined  + (07:24:25, 26 May 2025)
• 05000271/LER-1976-008-03, /03L:on 760415,LPCI Sys a Declared Inoperable & Alternate Testing Commenced.Caused by Inability to Guarantee Valve RHR-25A Operability Due to Past Problems W/Valve Body Shrinkage.Valve Reset  + (07:24:28, 26 May 2025)
• 05000271/LER-1976-009-03, /03L:on 760421,level Switch LS23-74 for Low Cst/Hpci Suction Valve Switching Circuit Failed to Actuate at Required Setpoint.Caused by Dislocated Switch Wire.Switch Wire Placed in Proper Position & Tied in Place  + (07:24:31, 26 May 2025)
• 05000271/LER-1976-010-03, /03L:on 760506,diesel Generator B Tripped on High Crankcase Pressure.Caused by Clogging of Ejector Supply Orifice or Ejector Body in Crankcase Breather & Supply Sys. No Corrective Action Taken  + (07:24:33, 26 May 2025)
• 05000271/LER-1976-011-01, /01T:on 760510,RHR Valves 27A & B Would Not Completely Obtain Required Open Position from Normally Closed Position.Caused by Increased Valve Stem Friction. Packing Adjusted & Stem Lubricated  + (07:24:36, 26 May 2025)
• 05000271/LER-1976-012-03, /03L:on 760512,head Gasket on Gland Seal Condenser Failed.Caused by Failure to Note New Valve Positions in Current Valve Lineup File & to Follow Valve Lineup Required by Surveillance Procedure  + (07:24:38, 26 May 2025)
• 05000271/LER-1976-013-03, /03L:on 760519,level Switch LS 23-74 Would Not Actuate at Required Setpoint of 14-3/8 Inches Above Tank Bottom.Caused by Immobility of Pivot Plate.Pivot Plate Screw Repositioned  + (07:24:40, 26 May 2025)
• 05000271/LER-1976-014-03, /03L:on 760519,level Switch 23-91A Would Not Actuate at Tech Spec Trip Level Setting of 2 Inches.Caused by Accumulation of Scale & Corrosion Inside Switch Chamber. Float Tapped & Repeatedly Flushed  + (07:24:43, 26 May 2025)
• 05000271/LER-1976-015-01, /01T:on 760525,chemistry & Health Physics Technician Inadvertently Secured Both Plant Stack Monitoring Sys Concurrently.Caused by Personnel Error.Plant Personnel Reinstructed  + (07:24:46, 26 May 2025)
• 05000271/LER-1976-016-03, /03L:on 760614,level Switch 23-91A Would Not Actuate at Tech Spec Trip Level Setting.Caused by Stuck Float Inside Level Switch Chamber.Switch Chamber Flushed, Causing Float to Become Freed & Operable  + (07:24:48, 26 May 2025)
• 05000271/LER-1976-017-03, /03L:on 760616,upon Automatic Initiation of HPCI Sys,Hpci Gland Seal Condenser Head Gasket Failed.Caused by Pressure Surge Approaching Shutoff Head of HPCI Pump.Gasket Repaired & Sys Returned to Svc  + (07:24:50, 26 May 2025)

• 05000271/LER-1976-018-01, /01T:on 760629,control Rod Block Associated W/One Control Rod Withdrawal Permit Circuit Found Inoperable. Caused by Position Indicating Switch on Rod 22-43 at full-in Position Stuck in Closed Position  + (07:24:52, 26 May 2025)

• ML20086D213  + (07:24:57, 26 May 2025)
• 05000498/LER-1991-021, :on 911010,power from 1J Bus Lost When Electrician Misapplied Multimeter Test Leads in Energized Circuit,Resulting in Reactor Trip.Caused by Personnel Error. Pump Reenergized & Training Session Held  + (07:25:28, 26 May 2025)
• 05000498/LER-1991-002, :on 910126,automatic Actuation of Safety Injection Sys Occurred in One of Three Trains.Caused by Inadequate Work Instructions for Maint Activity.Training Bulletin Issued Describing Event  + (07:25:54, 26 May 2025)
• 05000298/LER-1991-013, :on 911018,continuous Fire Watch Not Established for Obstructed Fire Door to Steam Tunnel.Caused by Personnel Error & Procedural Deficiency.Roving Fire Watch Initiated & Procedures Upgraded  + (07:26:00, 26 May 2025)
• ML20086C917  + (07:26:06, 26 May 2025)
• ML20086C905  + (07:26:09, 26 May 2025)
• ML20086C866  + (07:26:18, 26 May 2025)
• ML20086C859  + (07:26:22, 26 May 2025)
• 05000482/LER-1991-021, :on 911021,emergency Diesel Generator a Restored W/Incorrect post-welding Hydrostatic Test Pressure on Jacket Water & Lube Oil Hx.Caused by Personnel Error. Procedure Adm 08-217 Will Be Enhanced  + (07:26:24, 26 May 2025)
• ML20086C842  + (07:26:28, 26 May 2025)
• ML20086C836  + (07:26:31, 26 May 2025)
• 05000423/LER-1991-027, :on 911014,reactor Trip Signal Generated Due to High source-range Channel 32 Detector Counts.Caused by Electromagnetic Interference on source-range Signal Due to Malfunctioning Machine.Procedures Modified  + (07:26:32, 26 May 2025)
• 05000324/LER-1991-017-02, :on 911017,Wyle Labs Notified Util That safety- Relief Valves Exceeded Tech Spec Setpoint Drift.Caused by pilot-disc-to-seat Bonding Preventing Valves from Actuating.Ts Change Will Be Requested  + (07:26:34, 26 May 2025)
• ML20086C787  + (07:26:39, 26 May 2025)
• NRC-95-4469, Forwards Proprietary Vols I-IV of WCAP-14252, AP600 Low- Pressure Integral Sys Test at Oregon State Univ Final Data Rept. Rept Withheld from Public Disclosure Per 10CFR2.790  + (07:26:41, 26 May 2025)
• ML20086C772  + (07:26:42, 26 May 2025)
• ML20086C769  + (07:26:43, 26 May 2025)
• 05000328/LER-1995-003-02, :on 950531,turbine Tripped Followed by Reactor Trip as Result of Actuation of Main Generator Stator CW Failure Circuit.Event Will Be Reviewed W/Operations Personnel,Stressing Site Operating Philosophy  + (07:26:52, 26 May 2025)
• ML20086C622  + (07:26:54, 26 May 2025)
• ML20086C621  + (07:26:57, 26 May 2025)
• 05000333/LER-1995-010-01, :on 950530,TS Required Plant Shutdown Due to Unidentified Leakage Into Drywell.Repacked Valve 02-RWR-52B Using Current Maint Practice of Repacking w/non-asbestos Graphite  + (07:27:00, 26 May 2025)
• 05000373/LER-1991-014-03, :on 911015,TMA/Norcal (Vendor Providing Radioanalytical Analyses) Notified Util That Vent Stack Particulate Composite Sample for Jul 1991 Lost.Cause Unknown.Sample Control Procedures Changed  + (07:27:03, 26 May 2025)
• 05000333/LER-1995-011-01, :on 950531,leakage of Primary Containment Isolation Valves Was Exceeded.Caused by 02-2AOV-39 & 02- 2AOV-40 Experiencing Repeated Difficulty in Passing Llrt. Flushed Seat on Inboard Isolation Valve  + (07:27:05, 26 May 2025)
• ML20086C551  + (07:27:09, 26 May 2025)
• 05000354/LER-1995-007-01, :on 950603,diesel Fuel Oil Storage Tank Level Found Below TS Min Level Requirement Due to Design Deficiency.Alarm Response Procedure Revised  + (07:27:16, 26 May 2025)