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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

• 05000317/LER-1991-007-01, :on 911224,containment Integrity Breached When Emergency Air Lock Inner & Outer Doors Opened at Once. Caused by Slipped Chain & Misaligned Cam in Interlock Mechanism.Chain & Cam Realigned  + (05:21:39, 26 May 2025)
• 05000259/LER-1984-021-01, :on 840505,cabling for Main Steam Relief Valves Not Adequately Separated from Cabling for Nonautomatic Depressurization Sys Main Relief Valves.Caused by Design Error During Recovery from 1975 Fire  + (05:21:48, 26 May 2025)
• 05000445/LER-1991-032, :on 911206,incomplete Calibr of Four Channels & Nonconserative Indication of Reactor Power Noted.Caused by Error in Wording of Work Order Instructions.Steps Have Been Revised in Surveillance Database  + (05:21:57, 26 May 2025)
• 05000324/LER-1982-088-03, Suppression Pool Suction Supply Valve 2-E11-F004B Stem Spun Beyond Full Open Valve Position.Caused by IGSCC Due to Improper Heat Treating.New Valve Stem Installed  + (05:22:05, 26 May 2025)
• 05000275/LER-1984-014, :on 840506,while in Mode 2,spurious Reactor Protection Sys Signal Resulted in Reactor Trip.Caused by Faulty Temp Modifier in Protection Set II Control Cabinet. Component Replaced  + (05:22:13, 26 May 2025)
• 05000353/LER-1991-029-01, On 911223,reactor Containment & Isolation Control Sys Activated.Caused by Failure of PCRVICS Fuse B21 H-F15A.All Sys Responded as Designed.Fuse Replaced & All Isolations Reset  + (05:22:18, 26 May 2025)
• 05000361/LER-1984-028, :on 840505,waste Gas Sampling Sys Pressure Control Valve 2/3PCV0582 Failed Open,Resulting in Flow Through Sample Pump Discharge Relief Valve 2/3PSV0580 Into Waste Gas Discharge Header.Valve Replaced  + (05:22:21, 26 May 2025)
• 05000301/LER-1991-001-02, :on 910929,main Steam Isolation Valve Failed to Close.Caused by Degradation of Valve Operators.Investigation Was Performed to Assess MSIV Performance & Perceptions of Valve Performance  + (05:22:23, 26 May 2025)
• 05000338/LER-1991-023, :on 911227,w/unit in Cold Shutdown,Pzr Level Increased from 60 to 82% Cold Calibr Level.Caused by Personnel Error Due to Failure to Maintain Configuration Control After Type C Test.Personnel Cautioned  + (05:22:28, 26 May 2025)
• 05000354/LER-1991-019, :on 911123 & 911213,three Spurious Fan Starts in E Filtration Recirculation Ventilation Occurred Due to Water Accumulation in Low Flow Switch Sensing Lines.Design Change Package to Be Installed at Outage  + (05:22:30, 26 May 2025)
• 05000278/LER-1991-019-02, :on 911218,power Loss to PCIS Led to Isolation of SDC Mode of RHR Sys.Caused by Relay Coil Failure.Temp Decrease Did Not Affect Activities in Progress.Blown Fuse & Relay Replaced & Preventive Maint Evaluated  + (05:22:32, 26 May 2025)
• 05000265/LER-1991-016-03, :on 911227,design Discrepancy Noted Between FSAR & as-built for Traversing Incore Probe Ball Valve. Caused by Safety Barriers Being Degraded.Determined That Condition Does Not Affect Valve  + (05:22:34, 26 May 2025)
• L-2020-058, Resubmittal. Re Use of Wood Flour for Unit 4 Condenser Tubes  + (05:23:06, 26 May 2025)
• TAC:54741  + (05:23:14, 26 May 2025)
• ML20091L841  + (05:23:18, 26 May 2025)
• TAC:49082  + (05:23:51, 26 May 2025)
• ML20091L230  + (05:24:30, 26 May 2025)
• ML20091L220  + (05:24:34, 26 May 2025)
• ML20091K876  + (05:25:46, 26 May 2025)
• ML20091K794  + (05:25:54, 26 May 2025)
• 05000318/LER-1981-053-03, /03X-1:on 811105,discharge Pressure on Saltwater Pump 22 Discovered High Due to Closure of Valve CV-5214, Resulting in Degraded Saltwater Flow.Caused by Key Slipping Out of Keyway to Valve Steam.Valve Removed  + (05:26:07, 26 May 2025)
• TAC:45595  + (05:26:35, 26 May 2025)
• TXX-9514, Forwards Endorsement 56 to Nelia Policy NF-0274,Endorsement 29 to Maelu Policy MF-0131,Endorsement 57 to Nelia Policy NF-0274,Endorsement 58 to Nelia Policy 0274 & Endorsement 30 to Maelu Policy MF-0131  + (05:27:27, 26 May 2025)
• 05000362/LER-1984-009, :on 840317,during Surveillance of Sys Alignment Status,Manual Isolation Valves Found Closed,Rendering Both Trains of Containment Spray Sys Inoperable.Procedure Modified to Clarify Valve Lineup Requirements  + (05:27:31, 26 May 2025)
• ML20091J918  + (05:27:34, 26 May 2025)

• 05000302/LER-1980-036-03, While Performing Surveillance Procedure SP-320,decay Heat Pump Discharge Throttle Valve DHV-111 Would Not Control Flow in Automatic. Caused by Water in Sensing Line  + (05:29:23, 26 May 2025)

• 05000416/LER-1984-002-02, Final LER 84-002-02:on 840107,09,11,14,19 & 20 & 0223 & 24, Reactor Protective Sys Bus Breaker Trips Resulted in Loss of Shutdown Cooling.Trip on 840119 Caused by Circuit Board Failure.Remainder Caused by Voltage Transients  + (05:30:31, 26 May 2025)
• PMNS20200298, Annual Assessment Meeting  + (05:30:59, 26 May 2025)
• 05000278/LER-1984-001-02, Revised LER 84-001-02:on 840106,turbine Exhaust Rupture Diaphragm Alarm Annunicated Following Startup of HPCI Turbine.Caused by Rupture of Inner Rupture Disc.Inner Rupture Disc Replaced  + (05:31:12, 26 May 2025)
• ML20091H369  + (05:31:20, 26 May 2025)
• ML20091H179  + (05:31:36, 26 May 2025)
• ML20091H100  + (05:31:58, 26 May 2025)
• IR 05000329/1981014  + (05:32:14, 26 May 2025)
• TXX-9146, Interim Deficiency Rept CP-91-003 Re Corrosion of Installed Hilti Kwik Bolts.Initially Reported on 910611.Evaluation of Issue Continuing,Per Procedure 2IM-5.24.Last Interim Rept on Issue .Next Rept Will Be Provided by 920130  + (05:32:34, 26 May 2025)
• ML20091G884  + (05:32:39, 26 May 2025)
• L-95-004, TER on Third 10-Yr ISI Program Plan:Commonwealth Edison Co, Quad Cities Station,Units 1 & 2  + (05:32:55, 26 May 2025)
• ML20091G537  + (05:33:28, 26 May 2025)
• 05000368/LER-1990-024, :on 901113,turbine Tripped on Overspeed.On 901129,overspeed Trip of Emergency Feedwater Pump Occurred. on 901205,determined That Trips Caused by Water Slugging of Turbine.Oil Flush of Turbine Oil Sys Will Be Performed  + (05:33:41, 26 May 2025)
• 05000361/LER-1984-030, :on 840525,discrepancies Discovered W/ Preparation of Updated Fire Hazards Analysis.Deficient Conditions Involve Storage of Combustible Matls.Compensatory Fire Watches Established  + (05:33:56, 26 May 2025)
• ML20091F761  + (05:34:35, 26 May 2025)
• ML20091F557  + (05:34:43, 26 May 2025)
• ML20091F519  + (05:34:48, 26 May 2025)
• ML20091F431  + (05:35:03, 26 May 2025)
• ML20091F417  + (05:35:06, 26 May 2025)
• ML20091F356  + (05:35:15, 26 May 2025)
• IR 05000416/2020301  + (05:35:18, 26 May 2025)
• ML20091F135  + (05:35:50, 26 May 2025)
• ML20091F115  + (05:35:52, 26 May 2025)
• 05000293/LER-1990-005, :on 900320,480-volt Ac Load Ctr Breaker Did Not Open Automatically as Designed During Planned Bus B6 Transfer.Caused by Missing Retainer Ring.Breaker Sent to GE for Repair.Also Reported Per Part 21  + (05:35:58, 26 May 2025)
• ML20091D795  + (05:37:32, 26 May 2025)
• L-91-024, Requests Temporary Waiver of Compliance from TS 15.4.1,Table 15.4.1-1 to Defer Monthly Surveillance Testing Associated W/ Nuclear Flux power-range Overtemp,Overpower,Pressurizer Pressure Reactor Protection & PORV Operability  + (05:38:01, 26 May 2025)