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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

• 05000271/LER-1983-016-03, /03L-0:on 830620,MSIV 86A Closed in 5.5 S.Caused by Broken Spring in Hydraulic Dashpot Closure Time Adjustment Mechanism.Broken Spring Replaced,Hydraulic Dash Pot Reassembled & Valve Retimed  + (12:14:16, 26 May 2025)
• 05000244/LER-1983-021-03, /03L-0:on 830618,pressurizer Water Level Dropped Below 12%.Caused by RCS Cooldown After Reactor Trips.Level Restored by Increasing Charging Flow  + (12:14:20, 26 May 2025)
• 05000328/LER-1983-089-03, /03L-0:on 830704,steam Generator 1 Pressure Channel 2-PI-1-1c Failed High.Caused by Failed Transistor in GE Model 5500 Module.Transistor Replaced  + (12:14:21, 26 May 2025)
• 05000366/LER-1983-041-03, /03L-0:on 830620,while Performing RPS & ECCS Instrument Valve Lineup,Valves 2B21-N031C R114,2B21-N031D IV1 & IV2 Discovered Closed.Cause Unknown.Valves Returned to Open Position  + (12:14:25, 26 May 2025)
• 05000311/LER-1983-032-03, /03L-0:on 830623,large Leak Discovered in Svc Water Bay 2.Caused by Failed Gasket in Joint Downstream of Check Valve 22SW5 Due to Poor Access to Joint.Joint Remade & Design Changed  + (12:14:29, 26 May 2025)
• 05000416/LER-1983-052-03, Vessel Head/Vessel Flange Thermocouples Found Not Mounted on Respective Surfaces. Incident Should Not Have Been Reported.Caused by Inadequate Procedures.Procedures Revised  + (12:14:31, 26 May 2025)
• 05000424/LER-1993-011, :on 930924,failure to Perform Leak Rate Testing Following Maint Occurred.Caused by Inadequate Safety Evaluation for FSAR Change.Fsar Revised  + (12:14:41, 26 May 2025)
• 05000285/LER-1994-008, :on 941108,potential for Raw Water Pump Room Flooding Heavy Load Drop Occurred.Caused by Lack of Depth in Evaluation/Review Associated W/Original Load Drop Analysis. Danger Tag Placed to Restrict Use of HE-5  + (12:14:44, 26 May 2025)
• 05000254/LER-1994-014-05, :on 941107,twelve Instrument Maint Dept Fire Surveillance Exceeded Critical Dates.Caused by Lack of Training in Use of Stations General Surveillance Database for Im Dept Schedulers  + (12:14:50, 26 May 2025)
• ML20077F165  + (12:14:54, 26 May 2025)
• ML20077F150  + (12:14:57, 26 May 2025)
• ML20077F148  + (12:14:58, 26 May 2025)
• ML20077F146  + (12:15:00, 26 May 2025)
• ML20077F092  + (12:15:16, 26 May 2025)
• ML20077F083  + (12:15:18, 26 May 2025)
• 05000331/LER-1994-013, :on 941111,reactor Water Cleanup Sys Isolation Due to Failed Head Gasket on Filter Demineralizer 1T203A. Insp of Flange & Closure Bolts on 1T203A Filter Demineralizer Revealed No Damage  + (12:15:22, 26 May 2025)
• 05000219/LER-1994-020, :on 941110,inadvertent Isolation of Containment Exhaust Valves Due to Operator Performance.Two Isolated Valves Reopened  + (12:15:24, 26 May 2025)
• ML20077F009  + (12:15:31, 26 May 2025)
• ML20077F006  + (12:15:32, 26 May 2025)
• ML20077E993  + (12:15:34, 26 May 2025)
• ML20077E991  + (12:15:35, 26 May 2025)
• ML20077E944  + (12:15:38, 26 May 2025)
• ML20077E936  + (12:15:39, 26 May 2025)
• ML20077E930  + (12:15:41, 26 May 2025)
• 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)