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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

• 05000374/LER-1990-014-06, :on 901222,smoke Discovered Coming from Front Area of turbine-driven Reactor Feedwater Pump.Caused by Oil Leak on Insulation.Pump Taken off-line for Repair & Vibration Probe Flange Machined  + (16:27:29, 26 May 2025)
• 05000334/LER-1982-047-03, /03L-0:on 821013,pressurizer Level Channel I Indicator LI-RC-459 Recorded to Be Out of 4% Tolerance Band. Caused by Leaking Instrument Valve Resulting in Loss of Level in Ref Leg of LT-RC-459.Valve Internals Replaced  + (16:27:39, 26 May 2025)
• 05000352/LER-1991-003, :on 910113,loose Parts Monitoring Sys Inoperable for More than 30 Days.On 901205,digital Loose Part Locator Circuit Discovered in Lockup Condition.Caused by Faulty Component.New Circuit Boards Ordered  + (16:27:42, 26 May 2025)
• 05000373/LER-1982-128-03, /03L-0:on 821018,standby Gas Treatment Sys Electric Heating Coil 2VG01A Failed to Energize During Performance of LOS-VG-M1,standby Gas Treatment Sys Operability Test.Caused by out-of-calibr Flow Transmitter  + (16:27:44, 26 May 2025)
• 05000483/LER-1990-017, :on 901230,reactor Trip Occurred Due to Failure of Controller/Driver Card for Feedwater Regulating Valve B & Valve Closed & Could Not Be Reopened.Caused by Failed Card Capacitor.Card Replaced  + (16:27:51, 26 May 2025)
• 05000366/LER-1982-116-03, /03L-0:on 821014,during Full Load Operation, Drywell Hydrogen & Oxygen Analyzer B Found Inoperative. Caused by Failure of Diaphragm Capscrew on Sample Pump Connecting Rod.Capscrew Replaced & Analyzer Recalibr  + (16:27:54, 26 May 2025)
• 05000302/LER-1990-020, :on 901227,all Auxiliary Bldg Ventilation Lost. Caused by Inadvertent Jarring of Thermal Switch During Erection of Scaffolding.Switch Reset,Fans Restarted & Ventilation Sys Restored to Normal  + (16:27:58, 26 May 2025)
• 05000324/LER-1990-020-02, :on 901226,while Returning HPCI Sys to Svc, Determined That Min Flow Valve Control Power Fuse Blown, Resulting in Inoperability of Valve.Caused by Short in Indicating Light Bulb.Bulb & Fuse Replaced  + (16:28:00, 26 May 2025)
• ML20066G636  + (16:28:10, 26 May 2025)
• ML20066G626  + (16:28:18, 26 May 2025)
• 05000254/LER-1990-033, :on 901223,standby Gas Treatment Sys Auto Started,Reactor Bldg & Control Room Ventilation Sys Isolated & drywell-to-torus Purge Fans Tripped.Caused by Blown Fuse in HVAC Isolation Logic.Fuse Replaced  + (16:28:31, 26 May 2025)
• 05000348/LER-1991-001, :on 910123,hourly Fire Watch Patrol Required by Tech Spec 3.3.3.9 Not Performed.Caused by Personnel Error. Fire Watch Patrol Established Immediately & Involved Shift Foreman Counseled  + (16:28:33, 26 May 2025)
• 05000265/LER-1990-015-05, :on 901221,two HPCI Steam Drain Lines & Supports Found Outside FSAR Allowables for Thermal & Seismic Loadings.Caused by Inadequate Original Seismic Evaluation. Addl Supports Installed  + (16:28:38, 26 May 2025)
• 05000354/LER-1990-034-02, :on 901224 & 910107,filtration,recirculation & Ventilation Sys (FRVS) Recirculation Fan Found Running. Caused by Less than Adequate Design of FRVS Fan auto- Initiation Circuitry.Time Delay Installed  + (16:28:40, 26 May 2025)
• 05000265/LER-1990-014-05, :on 901220,discovered That Torus Level Sightglass Left Valved in Since 901217.Caused by Personnel Error & Lack of Labeling.Training Enhanced & Event Reviewed During Weekly Safety Meeting  + (16:28:41, 26 May 2025)
• ML20066G408  + (16:28:44, 26 May 2025)
• ML20066G042  + (16:28:57, 26 May 2025)
• 05000331/LER-1982-070-03, /03L-0:on 821019,while Reviewing Surveillance Test Procedures,Discovered Monthly Surveillance of Reactor Low Low Level Protection Sys Trip Function Not Performed During Sept.Caused by Personnel Error.Personnel Disciplined  + (16:28:59, 26 May 2025)
• ML20066G026  + (16:29:01, 26 May 2025)
• 05000265/LER-1982-020-03, /03L-0:on 821013,drywell to Suppression Pool Differential Pressure Was 0 Psid & Suppression Pool Level Fell Below Tech Spec Limits During Startup.Caused by Personnel Preoccupation W/Startup.Event to Be Discussed  + (16:29:02, 26 May 2025)
• ML20066G019  + (16:29:04, 26 May 2025)
• 05000361/LER-1982-126-03, /03L-0:on 821010,main Steam Trap Isolation Valve 2HV-8249 Lost Position Indication During Routine Control Room Insp.Caused by Loosening of Reed Switch Assembly 2ZSL-8249-2 on Valve Stem.Assembly Tightened  + (16:29:09, 26 May 2025)
• TAC:75836  + (16:29:35, 26 May 2025)
• ML20066F636  + (16:29:44, 26 May 2025)
• 05000499/LER-1990-008, :on 900508,determined That Small Pressure Boundary Leak Existed on ASME Class 2 Steam Generator C Lower Head Drain Line.Caused by High Cycle Failure Fatigue on Weld on Upstream Side.Drain Valves Replaced  + (16:29:50, 26 May 2025)

• 05000499/LER-1990-008-01, Forwards LER 90-008-01 Re Plant Shutdown Due to Primary Leakage from Steam Generator Bowl Drain Assembly.Initial Corrective Actions Re Permanent Design Change for Drain Valves May Be Reconsidered  + (16:29:51, 26 May 2025)

• ML20066F412  + (16:30:08, 26 May 2025)
• ML20066F370  + (16:30:18, 26 May 2025)
• 05000366/LER-1979-015-03, Undervoltage Trip on RPS M-G Set B Found at 40-volts Ac.Caused by Undervoltage Setpoint Too Low.Design Change Completed 820409  + (16:30:37, 26 May 2025)
• 05000366/LER-1979-015, Forwards Updated LER 79-015/03X-1  + (16:30:43, 26 May 2025)
• 05000321/LER-1980-040-03, Drywell/Torus Differential Prv Opened at 1.55 Psid.Caused by Condensation Accumulation,Due to Design Problem W/Sensing Line.Design Change Relocating Sensing Lines Completed 820526  + (16:30:51, 26 May 2025)
• 05000321/LER-1980-040, Forwards Updated LER 80-040/03X-1  + (16:30:53, 26 May 2025)
• 05000321/LER-1982-087, Forwards LER 82-087/03L-0  + (16:31:00, 26 May 2025)
• 05000321/LER-1980-069-01, HPCI Failed to Inject to Reactor Pressure Vessel After Receiving Auto Initiation Signal Due to Isolating on Steam Line High Dp.Caused by Poor Turbine Speed Control Calibr & Operability Procedures  + (16:31:15, 26 May 2025)
• 05000321/LER-1980-069, Forwards Updated LER 80-069/01X-1  + (16:31:18, 26 May 2025)
• 05000302/LER-1981-031, Updated LER 81-031/01T-1:on 810624,Henry Pratt Co Notified That Containment Purge Valves AHV-1A,1B,1C & 1D Could Fail During Loca.Cause Unknown.Valves Modified on 810701.Mods Resolved 10CFR100 Dose Rate Excess Identified on 821  + (16:31:49, 26 May 2025)
• 05000219/LER-1989-025, Responds to 901002 Safety Evaluation Re 891216 Event Involving Two Control Rods Moving at Same Time Reported Via LER 89-025.Mod to Reduce Probability of Simultaneous Control Rod Withdrawal Will Be Installed in 13R Refueling Out  + (16:32:51, 26 May 2025)
• ML20066E125  + (16:33:35, 26 May 2025)
• 05000440/LER-1990-025-01, Responds to NRC Ltr Re Violations Noted in Insp Rept 50-440/90-20 on 900920-1116.Corective Actions:Valve Repair & Rebuilding,Per LER 90-025-01,dtd 901123 & Restoration of Six MSIV That Required Disassembly to Original Condit  + (16:34:10, 26 May 2025)
• 05000322/LER-1990-009, :on 901211,automatic Initiation of ESF Sys Occurred When RPS Bus a Deenergized Due to Electrical Protection Assembly Breaker Trip.Caused by Low Output Voltage on RPS MG Set A.Procedure & Worksheet Revised  + (16:34:34, 26 May 2025)
• 05000254/LER-1982-034-03, /03L-0:on 821013,during Reactor Bldg Fuel Pool Monitoring Functional Test,Fuel Pool Monitor 1-1705-16A Tripped at Level Greater than Tech Specs.Caused by Instrument Set Point Draft.Unit Recalibr  + (16:35:08, 26 May 2025)
• 05000254/LER-1982-034, Forwards LER 82-034/03L-0  + (16:35:13, 26 May 2025)
• ML20066C992  + (16:35:53, 26 May 2025)
• ML20066C873  + (16:36:01, 26 May 2025)
• 05000272/LER-1982-081-01, /01P:on 821029-31,during Functional Testing of Hydraulic Snubbers,Two Snubbers on Steam Generators 11 & 14 Failed Bleed Test.Caused by Piston Packings Losing Pretension.Acceleration Test Passed  + (16:37:55, 26 May 2025)
• ML20066B360  + (16:38:52, 26 May 2025)
• TAC:67757  + (16:38:53, 26 May 2025)
• ML20066B328  + (16:38:55, 26 May 2025)
• 05000277/LER-1982-035-01, /01P:on 821021,diesel Generator Bldg Cardox Tank Pressure Found at 20 Psig Below Tech Spec Limit of 280 Psig. Caused by Tank Not Being Pressurized Correctly During Recent Filling Operation.Tank Pressurized within 16-h  + (16:39:28, 26 May 2025)
• 05000272/LER-1982-004, Supplemental LER 82-004/03X-1:on 820108,charging Pump 13 Declared Inoperable Due to Component Cooling Water Sys Being Tagged Out for Planned Maint.On 820109,positive Reactivity Change Found in RCS Boron Concentration  + (16:39:35, 26 May 2025)
• 05000311/LER-1982-002, Supplemental LER 82-002/03X-1:on 820111,battery Charger 2A1 Tripped.Charger Tripped Again Upon Resetting Breaker.Caused by Difference Between Battery & Battery Charger Voltages. Operating Instructions Revised to Adjust Float Vo  + (16:39:47, 26 May 2025)