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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

• 05000368/LER-1980-045-04, /04X-3:on 800702,0823 & 1102,condenser off-gas Radiation Monitor 2RE-0645 Found Inoperable.Caused by Erratic Radiation Element Signal.Plastic Coated Detector Installed & Moisture Resistant Epoxy Used  + (02:14:57, 26 May 2025)
• 05000368/LER-1979-066-03, /03X-1:on 790809,following Draining of Reactor Drain Tank,Outside Containment Isolation Valve 2CV-2201-2 Would Not Close.Caused by Foreign Matl Damaging Seats & Balls.Valve Disassembled,Cleaned & Reassembled  + (02:15:17, 26 May 2025)
• 05000298/LER-1992-011, :on 920625,two Installations of Thermo-Lag 330 Fire Barrier Matl,Used to Provide 1 H Protection,Identified Per Review of NRC Bulletin 92-001.Caused by Inadequate Qualification Testing.Restoration Underway  + (02:16:12, 26 May 2025)
• 05000416/LER-1992-014, :on 920625,automatic Actuation of RWCU Sys Outboard Containment Isolation Valves Occurred & Main Steam Line Tunnel High Temp Annunciator Alarmed.Caused by Receipt of Lds Trip Signal.Temp Switches Calibr  + (02:16:15, 26 May 2025)
• ML20099A761  + (02:16:23, 26 May 2025)
• 05000368/LER-1980-087-03, /03X-2:on 801129,high Pressure Safety Injection Valve 2CV-5056 Failed to Close While Performing Routine Level Adjustments of Safety Injection Tank 2T-2C.Caused by Blown Control Power Fuse.Fuse Replaced  + (02:16:47, 26 May 2025)
• TAC:55816  + (02:17:38, 26 May 2025)
• ML20098G891  + (02:18:13, 26 May 2025)
• ML20098G881  + (02:18:16, 26 May 2025)
• IR 05000254/2020410  + (02:20:03, 26 May 2025)
• IR 05000354/2020010  + (02:20:05, 26 May 2025)
• 05000397/LER-1984-091, :on 840823,RHR Isolation & Reactor Low Water Level Trip Occurred While Placing RHR Sys in Shutdown Cooling Mode.Caused by High Shutdown Cooling Suction Flow. Shutdown Cooling Flow Path Reestablished  + (02:22:07, 26 May 2025)
• ML20098E378  + (02:22:37, 26 May 2025)
• ML20098D861  + (02:23:35, 26 May 2025)
• 05000254/LER-1992-014-02, :on 920424,determined That LPCI Valves Would Not Open During Degraded Voltage Condition Due to Improper Setting of Trip Setpoints.Caused by Design Error.Valve Contactors Replaced  + (02:23:40, 26 May 2025)
• 05000324/LER-1984-010-01, :on 840827,during Refueling/Maint Outage, Automatic Trip of Both Reactor Protection Sys Channels a & B Occurred.Caused by Possible Welding or Mechanical Shock During Outage  + (02:23:41, 26 May 2025)
• 05000265/LER-1992-013, :on 920423,determined That Degraded Voltage Setpoints Nonconservative,Based on Preliminary Calculations. Caused by Faulty Calculation Methodology.Second Level Voltage Relays Replaced  + (02:23:43, 26 May 2025)
• 05000373/LER-1992-006-04, :on 920427,determined That Design Setpoint of 4 Kv Degraded Voltage Relays May Be Insufficient to Assure Proper Operation.On 920429,discovered That HPCS Pump Cooler Fan Voltage Lower than Required  + (02:23:46, 26 May 2025)
• ML20098D715  + (02:23:50, 26 May 2025)
• 05000259/LER-1984-032-01, :on 840814,during Core Spray Logic Test, Solenoid Which Controls Air to Actuator of Inboard Isolation Valve Caused Actuator to Hold Check Valve in Open Position. Caused by Personnel Error.Solenoid Repaired  + (02:23:52, 26 May 2025)
• 05000461/LER-1992-006, :on 920425,containment & Drywell Instrument Air Sys Isolation Valves Closed Unexpectedly.Caused by Design of Instrument Air Isolation Logic.Mod to Change Logic Will Be Evaluated  + (02:23:54, 26 May 2025)
• ML20098D699  + (02:23:56, 26 May 2025)
• 05000374/LER-1984-054, :on 840818,isolations of Reactor Water Cleanup Occurred.Under Same Conditions,Two Other Reactor Water Cleanup Isolations Occurred.Caused by High Differential Flow.Corrective Actions Under Review  + (02:24:00, 26 May 2025)
• ML20098D616  + (02:24:08, 26 May 2025)
• 05000254/LER-1992-012-03, :on 920415,Main Chimney High Range Noble Gas Monitor Was Declared Inoperable Due to Mgt Deficiency in Prioritizing & Scheduling Work.Im Technician Replaced I/O Board for Subj Monitor  + (02:24:11, 26 May 2025)

• 05000278/LER-1984-010-01, :on 840816,loss of Power to Portion of Primary Containment Isolation Sys Outboard Isolation Logic Caused Partial Actuation.Caused by Grounded Leads on Primary Side of Unit 2 Pump Transformer A.Logic Reset  + (02:24:20, 26 May 2025)

• 05000374/LER-1984-055, :on 840818,RHR (Bo) Full Flow Test Valve 2B, 2E12-F024B,failed to Close.Caused by Loose Interface Between Valve Stem & Disk.Skirt Added to Disk to Increase Area Contacting Side Guides  + (02:24:38, 26 May 2025)
• 05000271/LER-1984-012, :on 840717,contractor Did Not Properly Tag Out Reactor Bldg Air Conditioning Unit 1B,resulting in Reactor Bldg Air Conditioning 2 Supply Line Inspirating Into Svc Water Sys for 4 H.Caused by Personnel Error  + (02:24:39, 26 May 2025)
• ML20098D298  + (02:24:42, 26 May 2025)
• ML20098D292  + (02:24:44, 26 May 2025)
• ML20098D279  + (02:24:47, 26 May 2025)
• 05000327/LER-1992-009, :on 920416,transient Induced or Spurious Mitigating sys-actuation Circuitry Signal & Loss of Offsite Power Experienced.Caused by Incorrect Location of AMSAC Circuitry in AFW Pump.Criteria Revised  + (02:24:51, 26 May 2025)
• 05000315/LER-1984-019-01, :on 840818,ability of Turbine Driven Auxiliary Feed Pumps to Meet Safety Function Questioned During NRC Audit.Caused by Governor Setting at 50%.Unit 1 Settings Changed to 85% & Unit 2 to 90%  + (02:24:59, 26 May 2025)
• ML20098D180  + (02:25:05, 26 May 2025)
• ML20098D175  + (02:25:08, 26 May 2025)
• 05000325/LER-1984-013, :on 840817,control Bldg Emergency Air Filtration Sys Train B Automatically Started Due to Spurious Fire Alarm in Unit 2 Reactor Turbine Gauge Board.Train Returned to Standby  + (02:25:11, 26 May 2025)
• 05000374/LER-1992-006-03, :on 920420,high Differential Flow Alarm Signal Received from Sys Instrumentation While RWCU Sys Being Shut Down.Caused by RWCU Valve Closing Prior to Shutdown. Stroke Testing Completed for Isolation Valves  + (02:25:17, 26 May 2025)
• ML20098D149  + (02:25:18, 26 May 2025)
• 05000289/LER-1995-002-01, :on 950908,control Rod Trip Insertion Times Exceeded TS 4.7.1.1 Limits.Caused by Accumulation of Corrosion Deposits in CRDM Thermal Barrier Call Check Valves & Lead Screw Guide Bushing  + (02:25:40, 26 May 2025)
• 05000499/LER-1995-006-01, :on 950905,failure to Fully Meet Requirements of TSs Occurred Due to Not Placing Control Room Envelope HVAC Sys in Required Mode.Individual Involved Counseled.W/  + (02:25:42, 26 May 2025)
• 05000289/LER-1995-004-01, :on 950912,short Term Interruption of DHR Flow Occurred Due to Inadvertent Operation of DH-V-1 During ESAS Relay Coil Replacement.Caused by Less than Adequate Procedural Guidance.Procedures Revised  + (02:25:45, 26 May 2025)
• IR 05000498/1988079  + (02:26:02, 26 May 2025)
• 05000458/LER-1995-007-02, :on 950905,fan Hub for HPCS Pump Room Unit Cooler Failed.Cause Presently Being Investigated.Unit Cooler Repaired & Restored to Operations  + (02:26:05, 26 May 2025)
• ML20098C530  + (02:26:30, 26 May 2025)
• 05000267/LER-1995-006-02, :on 950903,TS Violation Occurred Due to Failure to Meet Minimum Degree of Redundancy.Caused by Equipment Malfunction.Completed Actions to Remove Channel PT-446 from Svc Per Procedure Owp  + (02:26:38, 26 May 2025)
• 05000338/LER-1995-004-02, :on 950907,missed Surveillance of N-16 Monitors Occurred.Caused by Result of Being Unaware N-16s Inoperable. Selector Switch Operated to Both Ni Selector Positions & Proper Power Levels Obtained/Restored  + (02:26:40, 26 May 2025)
• 05000254/LER-1984-017-03, :on 840816,mechanical Vacuum Pump Began Tripping Due to High Temp.Caused by Installation of South Steam Jet Air Ejector Suction Valves 90 Degrees Out of Proper Orientation  + (02:26:42, 26 May 2025)
• ML20098C305  + (02:26:46, 26 May 2025)
• ML20098C285  + (02:26:48, 26 May 2025)
• 05000446/LER-1995-002-01, :on 950902,invalid TS Surveillance Occurred Due to Reading Incorrect Instrument.Performed Surveillance  + (02:26:51, 26 May 2025)
• 05000259/LER-1984-033-01, :on 840815,onsite GE Representative Notified Util That Installed Squib Cartridges on Traversing in-core Probe Shear Valves Possibly Defective.Probes Pulled Into Shields & Ball Valves Closed  + (02:26:54, 26 May 2025)