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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
- 05000387/LER-1983-093-01, /01T-0:on 830711,during Review of Completion of Surveillance Tests,Discovered That 31-day Functional Test of Containment Radiation Monitor a Not Performed from 830612-0711.Caused by Personnel Error + (12:16:30, 26 May 2025)
- ML20077D461 + (12:18:16, 26 May 2025)
- ML20077D457 + (12:18:17, 26 May 2025)
- ML20077C989 + (12:19:27, 26 May 2025)
- 0CAN068306, Advises That Addl Info Re IE Insp Rept 50-313/83-03 Concerning Fuel Shuffle Will Be Provided by 830620,per NRC 830519 Request + (12:20:12, 26 May 2025)
- 05000302/LER-1982-002-03, After Removing MUP-1B Pump Casing by MP-126,discovered Pump Casing Was Seismic Anchor.Caused by Failure of Procedure MP-126 to Identify Required Seismic Evaluation.Maint Procedure Revised + (12:20:49, 26 May 2025)
- ML20077B889 + (12:20:54, 26 May 2025)
- ML20077B886 + (12:20:56, 26 May 2025)
- 05000293/LER-1979-050-03, HPCI Exhaust Line Snubber SS-23-3-31 Strut Assembly Found Bent & Thread Assembly Out of Wall Mount.Caused by Transient Hydro Shock. Snubbers Upgraded & Addl Snubbers Added + (12:22:32, 26 May 2025)
- 05000250/LER-1983-008-03, /03L-0:on 830614,conduit for Future Safety Parameter Display Sys Accidentally Damaged During Installation.One Containment Spray Pump Involved.Caused by Incorrect Drawing.Repairs Initiated + (12:23:39, 26 May 2025)
- 05000277/LER-1983-018-03, /03L-0:on 830624,while Performing HPCI Sys Logic Functional Surveillance Test,Hpci Turbine Control Valve Failed to Open.Caused by Burned Out Dropping Resistor in Power Supply to Woodward Emergency Generator Motor + (12:23:42, 26 May 2025)
- 05000277/LER-1983-019-03, /03L-0:on 830626,during Surveillance Testing, Standby Gas Treatment Filter Train Outlet Valve AO-20475-2 Failed to Open.Caused by Binding in Solenoid Valve Mfg by Asco.Solenoid Replaced & Valve Returned to Svc + (12:23:43, 26 May 2025)
- 05000387/LER-1983-091-03, /03L-0:on 830609,LPCI Loop B of RHR Discovered Not Full.Lpci Declared Inoperable.Caused by Loose LPCI Control Disc Valve.Tack Weld on Disc/Stem Assembly Increased + (12:23:46, 26 May 2025)
- 05000395/LER-1983-061-03, /03L-0:on 830610,identified Surveillance Requirements for 6-inch Containment Purge Supply & Exhaust Isolation Valves Not Fully Conducted.Caused by Procedural Inadequacy.Procedure Developed + (12:23:48, 26 May 2025)
- 05000293/LER-1980-034, Updated LER 80-034/03X-1:on 800701 & 16,HPCI Turbine Discharge Line Snubber Found Severed & HPCI Declared Inoperable.Caused by Transient Hydrodynamic Shock During Startup & Shutdown of HPCI Turbine + (12:23:54, 26 May 2025)
- 05000382/LER-1994-014-01, :on 941006,HLIV Circuit Breaker Left in Open Position Due to Personnel Error.Cognizant CRS Has Been Counseled in Accordance W/Waterford 3 Improving Human Performance Program + (12:23:58, 26 May 2025)
- ML20077A730 + (12:24:20, 26 May 2025)
- ML20077A727 + (12:24:22, 26 May 2025)
- TAC:M85999 + (12:24:23, 26 May 2025)
- TAC:73628 + (12:24:26, 26 May 2025)
- 05000316/LER-1983-053-03, /03L-0:on 830520,during Surveillance Log Review, Containment Air Lock 3-day Door Tests Not Performed by Required Time.Caused by Personnel Misunderstanding.Test Immediately Performed Satisfactorily + (12:24:28, 26 May 2025)
- 05000369/LER-1983-042-03, /03L-0:on 830609,diesel Generator 1B Declared Inoperable When Two Unsuccessful Attempts Made to Load Generator.Caused by Inaccurate Timing.Test Procedure Revised to Allow for 3 Minute Wait + (12:24:29, 26 May 2025)
- 05000336/LER-1983-019-03, /03L-1:on 830528,following Reactor Trip from 40% Power,Greater than 1.0 Uci Per G I-131 Indicated in Primary Coolant.Caused by Degraded Fuel Pins.Results of Fuel Sipping Performed 830622-30 Encl + (12:24:31, 26 May 2025)
- 05000325/LER-1983-014-03, /03L-0:on 830406 & 08,during Ongoing Refueling, Listed Control Rods Had No Indications for Identified Positions.Caused by Defective Prototypic Inlet Piping (PIP) Connectors,Reed Switch & PIP Probe + (12:24:32, 26 May 2025)
- 05000277/LER-1983-015-03, /03L-0:on 830611,while Performing Surveillance Test,Reactor Water Cleanup Inboard Isolation Valve MO-2-12-15 Failed to Close.Caused by Open Auxiliary Contact in Motor Control Ctr,Preventing Close Signal.Contact Freed + (12:24:34, 26 May 2025)
- 05000315/LER-1983-059-03, /03L-0:on 830624,during Normal Operation,Control Room Access Fire Door 412 Failed to Operate Properly.Caused by Failure of Closure Support Arm.Closure Arm Repositioned & Closing Spring Tightened + (12:24:44, 26 May 2025)
- 05000271/LER-1994-012, :on 941010,exceeded Core Thermal License Limit by 0.75 Mwth Due to Isolation of Feedwater Pressure Transmitter That Supplies Signal to Computer Program That Calculates Core Thermal Power + (12:24:46, 26 May 2025)
- 05000244/LER-1983-020-03, /03L-0:on 830613,during Startup from Refueling Outage,Rcs Chloride Concentration Exceeded 15 Ppm at Greater than 250 F.Caused by Increased Chloride Solubility Due to Increasing RCS Temp & Contamination + (12:24:48, 26 May 2025)
- 05000328/LER-1994-008-02, :on 941021,manual Actuation of Reactor Trip Breakers Occurred Due to Failure of Rod Control Demand Step Counter.Caused by Incorrect Step Position Indication on Control Bank a Group 2 Step Counter + (12:24:51, 26 May 2025)
- ML20077A586 + (12:24:53, 26 May 2025)
- ML20077A581 + (12:24:55, 26 May 2025)
- 05000272/LER-1983-029-03, /03L-0:on 830617,control Room Operator Discovered Three RPI Channels Indicating Greater than Max Allowed Deviation in Tech Specs.Caused by Calibr Drift in Two Channels.Channels Recalibr + (12:25:06, 26 May 2025)
- 05000348/LER-1983-035-03, /03L-0:on 830610,vacuum Pump Tripped & Containment Atmosphere Activity Particulate Monitor R-11 & Gaseous Monitor R-12 Declared Inoperable.Caused by Failure of Inboard Pump During Maint on Outboard Pump + (12:25:09, 26 May 2025)
- 05000280/LER-1983-027-03, /03L-0:on 830615,intermediate Range High Flux Trip Setpoint Found Nonconservative During Review of Cycle 7 & Cycle 8 Data.Caused by Improper Assessment of Effect of New Core Design on Instrumentation + (12:25:17, 26 May 2025)
- 05000220/LER-1983-014-03, /03L-0:on 830615,16,17,20 & 21,115-kV Offsite Power Line Removed from Svc for 10 H Each Day.Caused by Need to Allow Const of 115 Kv Line for Unit 2,currently Under Const.Line Returned to Svc Each Day + (12:25:19, 26 May 2025)
- 05000348/LER-1983-034-03, /03L-0:on 830616,pressurizer Pressure Dropped Below Tech Spec Limits During Startup.Caused by Personnel Error.Rcs Boration,Combined W/Load Increase,Resulted in Pressurizer Pressure Drop.Personnel Counseled + (12:25:24, 26 May 2025)
- 05000387/LER-1983-094-03, /03L-0:on 830617,during Cold Startup,Average Power Range Monitor Flow Biased Scram Trip Setpoint Less Conservative than Tech Specs.Caused by Low Concentration of Xenon in Core.Setpoint Adjusted + (12:25:26, 26 May 2025)
- 05000353/LER-1991-006-02, :on 910404,emergency Diesel Generator Inadvertently Started.Caused by Personnel Error.Operator Who Depressed Wrong Button Counseled & Procedural Enhancements Implemented + (12:25:49, 26 May 2025)
- 05000266/LER-1991-001, :on 910405,loss of off-site Power to Both Units Resulted in Loss of Normal Feedwater.Cause Unknown. Operators Resolved Conditions Which Resulted in Design Inadequacy + (12:25:51, 26 May 2025)
- 05000361/LER-1994-005, :on 941012,voluntary TS 3.0.3 Entry Due to Declaring Both Trains of ECCS Inoperable in Mode 1.Util Replaced 2PCV6418 W/Qualified in-kind Replacement Valve + (12:25:58, 26 May 2025)
- 05000416/LER-1983-074-03, /03L-0:on 830606,Div 1 Bus Breaker,Ite Type 5HK350,tripped During LPCS Pump Startup for Monthly Surveillance.Cause Not Determined During Maint Investigation + (12:25:59, 26 May 2025)
- 05000414/LER-1994-007-01, :on 941018,reactor Trip Occurred & TS Violated. Caused by Document Use Practices & Less than Adequate Mgt Directions.Cr Operators Entered Appropriate Emergency Procedures & Stabilized Plant + (12:26:01, 26 May 2025)
- 05000321/LER-1994-012, :on 941025,partial Group 1 PCIS Trip Initiated Because Bias Spring Assembly Incorrectly Installed in Main Turbine EHC Sys.Bias Spring Installed Correctly & Contract Personnel Made Aware of Consequences of Event + (12:26:03, 26 May 2025)
- 05000395/LER-1983-060-03, /03L-0:on 830609,boron Injection Tank Boron Concentration Fell Below Tech Specs.Caused by Overpressurized Sys,Resulting in Relief Valve Actuation. Procedures Revised + (12:26:05, 26 May 2025)
- 05000325/LER-1994-012, :on 940922,HPCI Declared Inoperable Due to Failure of Lube Oil CW Supply Valve Control Power Fuse. Workers Disciplined Re Importance of Maintaining Questioning Attitude & When Uncertain Not to Proceed + (12:26:46, 26 May 2025)
- 05000302/LER-1983-018, Updated LER 83-018/01T-1:on 830413,preliminary Repts Received from B&W Indicated 51 of 120 Upper Core Barrel Bolts W/Ultrasonic Flaw Indications.Caused by Intergranular Stress Corrosion Cracking.Bolts Replaced + (12:26:56, 26 May 2025)
- 05000254/LER-1983-025-03, /03L-0:on 830621,maint Dept Observed Valve Yoke Pulled Away from Valve Bonnet & Valve Steam Bent.Caused by Bolts Vibrating Loose.Bent Stem Straightened & Locking Tabs Installed on yoke-to-bonnet Bolting + (12:27:02, 26 May 2025)
- L-94-010, Evaluation of Util Response to Suppl 1 to NRC Bulletin 90-01: Byron-1/-2, Technical Evaluation Rept + (12:27:21, 26 May 2025)
- 05000282/LER-1989-010, :on 890721,reactor Trip Occurred Resulting from Loss of One Reactor Coolant Pump.Caused by Personnel Error. Problem Investigated.Bus Doors 4160V Labeled & Potential Fuse Drawer Fronts Also Labeled + (12:27:44, 26 May 2025)
- 05000341/LER-1990-013, :on 901228,determined That Need for Isolation of Sampling Line in Event of LOCA Not Identified in Procedure & Primary Containment Integrity Could Be Compromised.New Sample Taps Added + (12:27:47, 26 May 2025)
- TAC:52416 + (12:27:57, 26 May 2025)