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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

• TAC:71349  + (05:59:12, 11 January 2025)
• ML13331A379  + (05:59:14, 11 January 2025)
• TAC:75883  + (05:59:14, 11 January 2025)
• ML13331A378  + (05:59:15, 11 January 2025)
• ML13331A377  + (05:59:16, 11 January 2025)
• 05000206/LER-1989-021, :on 890803,reactor Tripped on Low Flow Due to Instrument Cable Degradation.Caused by Polyethylene Insulation Becoming Brittle Due to Oxidation.Cable W/Loss of Insulation to Ground Replaced  + (05:59:18, 11 January 2025)
• ML13331A375  + (05:59:20, 11 January 2025)
• ML13331A374  + (05:59:21, 11 January 2025)
• 05000206/LER-1989-033, :on 900131,discovered That RCS Sample for Gross Activity Determination Not Taken Prior to Entry Into Mode 4 on 890624.Caused by Failure to Incorporate New Chemistry Procedure.Procedures Revised & Incorporated  + (05:59:23, 11 January 2025)
• ML13331A371  + (05:59:26, 11 January 2025)
• ML13331A369  + (05:59:27, 11 January 2025)
• ML13331A366  + (05:59:28, 11 January 2025)
• 05000206/LER-1990-003, :on 900126,discovered That Tech Spec 4.15.8 Not Fully Implemented as Required by Newly Issued Amend Which Required Implementation by 891215.Caused by Personnel Error. Station Procedure SO123-III-6.6 Revised  + (05:59:30, 11 January 2025)
• ML13331A363  + (05:59:31, 11 January 2025)
• PNO-V-90-009, on 900302,earthquake Occurred in Southern California.Quake Felt at Plant But Did Not Trigger Recording Instruments.No Further Licensee Actions Planned.Preliminary Notification Issued for Info Only  + (05:59:33, 11 January 2025)
• 05000206/LER-1990-002, :on 900124,required Sample/Analysis Not Performed When Power Change Exceeded 15% within 1 H.Caused by Personnel Error.Individual Reprimanded & Event Discussed w/on-shift Operations Personnel  + (05:59:35, 11 January 2025)
• TAC:75454  + (05:59:36, 11 January 2025)
• ML13331A359  + (05:59:38, 11 January 2025)
• 05000206/LER-1990-001, :on 900120,dc Bus Feeder Breakers Opened During Dc Ground Troubleshooting,Resulting in Violation of Tech Spec 3.3.1.Ground Attributed to Degraded Cable Installation & Corrosion Conduit Joint.Ground Cleared  + (05:59:40, 11 January 2025)
• ML13331A356  + (05:59:42, 11 January 2025)
• 05000206/LER-1989-032, :on 890103,discovered That Tech Spec 18-month Insp of Former Security Uninterruptible Power Supply Battery D-20 Not Performed Following Installation of Temporary Mod. Mod Procedure Enhanced  + (05:59:44, 11 January 2025)
• 05000206/LER-1989-030, :on 891228,determined That Previous Evaluations of post-loss of Cooling Accident ECCS Recirculation Flow Incorrectly Credited.Caused by Programmatic Weaknesses Noted in Util 881003 Submittal.Valve Closed  + (05:59:46, 11 January 2025)
• ML13331A353  + (05:59:48, 11 January 2025)
• ML13331A352  + (05:59:49, 11 January 2025)
• 05000206/LER-1989-031, :on 891228,determined That Auxiliary Feedwater Could Produce Flow Rate Exceeding Water Hammer Design Basis Max.Apparently Caused by Error in Modeling Turbine Driven Pump.Worker Placed at Control Room Panel  + (05:59:51, 11 January 2025)

• ML13331A350  + (05:59:53, 11 January 2025)

• ML13331A349  + (05:59:55, 11 January 2025)
• 05000206/LER-1989-024, :on 890929,determined That Plant Could Be Placed in Configuration Which Could Result in Degraded Containment Spray Sys Flow.Caused by Weak Engineering & Technical Support.Controls Established  + (05:59:57, 11 January 2025)
• 05000206/LER-1989-009, :on 890308,determined That Several Effluent Monthly Repts Had Exceeded 31-day Surveillance Interval. Caused by Negligence on Part of Effluent Engineers.Chemistry Procedure Revised Requiring That Surveillances Be Performed  + (06:00:00, 11 January 2025)
• 05000206/LER-1989-005, :on 890220 & 0317,emergency Diesel Generator 2 Automatically Started by Sequencer 2 on Loss of Bus Signal. Probably Caused by Partial Cycling of Relay Designed to Actuate During Undervoltage.Components Tested  + (06:00:04, 11 January 2025)
• 05000206/LER-1989-023, :on 890918,four Control Rods from Shutdown Bank 2 Dropped Into Core & Approx 23 Later,Remaining 12 Shutdown Bank Control Rods Dropped Into Core.Caused by Failure of Contactor Coil 2MS1.Coil Replaced  + (06:00:07, 11 January 2025)
• 05000206/LER-1989-001-01, :on 890108,observed That Reactor Vessel Thermal Shield Support Block Bolts Out of Tolerance.Caused by high-cycle Flow Induced Vibration.Conceptual Design & Plan for Restoring Thermal Shield Support Initiated  + (06:00:11, 11 January 2025)
• 05000206/LER-1989-020, :on 890723,both Fuse Blocks for Emergency Siren Transfer Switch Installed in Violation of Tech Specs. Caused by Failure to Document Manipulation of safety-related Equipment.Sign Installed on Fuse Blocks  + (06:00:17, 11 January 2025)
• 05000206/LER-1989-019, :on 890724,unit Manually Tripped Due to Loss of Feedwater Flow to Steam Generator a & Hi Hi Level & Steam/ Feed Mismatch Alarm Received.Caused by Error in Incorporating Design Change Info  + (06:00:20, 11 January 2025)
• 05000206/LER-1989-016, :on 890703,air Flow Test of Lube Oil Reservoir & Conditioner Fire Protection Sys Revealed That Approx 20 of 78 Nozzles Plugged.Caused by Accumulation of Piping Corrosion Matl Inside Fire Spray Header  + (06:00:24, 11 January 2025)
• 05000206/LER-1989-014, :on 890405,determined That Unlimited Operation of Dc Buses on cross-train Chargers Unwarranted Condition. Caused by Failure to Develop Appropriate Tech Specs.Design Change Re Train Alignment Completed  + (06:00:27, 11 January 2025)
• PNO-V-89-040, on 890703,shutdown for Greater than 48 H Occurred to Troubleshoot Reactor Coolant Pump Bearing Oil Problem.Oil Not Contaminated W/Metal or Water  + (06:00:30, 11 January 2025)
• ML13331A334  + (06:00:32, 11 January 2025)
• 05000206/LER-1989-012, :on 890525,auxiliary Feedwater Sys Train a Actuation Occurred When wide-range Steam Generator Level Signals Decreased Below Actuation Setpoint.Caused by Effects of Internal Circulation Flow  + (06:00:35, 11 January 2025)
• ML13331A332  + (06:00:37, 11 January 2025)
• ML13331A331  + (06:00:38, 11 January 2025)
• ML13331A330  + (06:00:40, 11 January 2025)
• 05000206/LER-1989-017, :on 890503,reactor Protection Sys Actuation Occurred While Withdrawing Control Bank II (Cbii).Caused by Spikes Generated by Sources Associated W/Cbii Due to Stored Energy Dissipation.Circuit Mods Installed  + (06:00:43, 11 January 2025)
• ML13331A328  + (06:00:45, 11 January 2025)
• PNO-V-89-032, on 890525,auxiliary Feedwater Sys Actuation Occurred.Caused by Low Level Indication on Wide Range Instruments Modified as Part of Auxiliary Feedwater Sys Upgrades During Last Outage  + (06:00:49, 11 January 2025)
• PNO-V-89-029, on 890517,startup Aborted Due to Unstable Intermediate Range Indications.Caused by Apparent Electronic Noise.Unit Remains in Mode 3,with Addl Troubleshooting of Nuclear Instrument Sys in Progress  + (06:00:53, 11 January 2025)
• 05000206/LER-1989-013, :on 890404,discovered That Inservice Testing Program for Valves Did Not Include Open Response Time for Two RCS Porvs.Caused by Failure to Recognize Impact of Tech Spec Change.Porvs Included in Program  + (06:00:57, 11 January 2025)
• PNO-V-89-023, on 890407,magnitude 4.6 Earthquake Occurred Near Newport Beach,Ca.Telephone Contact W/Univ of California Established That Reactor Shutdown Prior to Earthquake.Util Reported No Damage to Facility  + (06:01:03, 11 January 2025)
• 05000206/LER-1989-008, :on 890303,determined That Possibility Exists That Containment Fire Suppression Sys Pneumatic Control Valve CV-92 Could Fail Open Due to Single Spurious Failure of Solenoid Valve.Training Program Initiated  + (06:01:06, 11 January 2025)
• 05000206/LER-1989-004-01, :on 890302,identified Design Deficiency Associated W/Automatic Energization of safety-related 4 Kv Buses.Caused by Deficiencies W/Engineering Review & Design Basis Documentation.Training Program Initiated  + (06:01:10, 11 January 2025)
• PNO-V-89-020, on 890329,33 Gpm Leak Identified from Seal Package for Reactor Coolant Oil Lift Pump A,Jogging Pump & Raising RCS Pressure.Rcs Pressure Lowered to Atmospheric Pressure.Methods for Correcting Problem Under Review  + (06:01:14, 11 January 2025)