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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

• 05000316/LER-1982-059-03, /03L-0:on 820709,flowpath from Boric Acid Tanks Via Boric Acid Transfer & Charging Pumps to RCS Isolated for 38 Minutes to Repair Leaking Isolation Valve CS-485.Caused by Diaphragm Failure.Valve Diaphragm & Bonnet Replaced  + (03:07:07, 27 May 2025)
• 05000334/LER-1982-025-03, /03L-0:on 820713,control Rod F10 Indication Declared Inoperable When Analog Rod Position Indication & Primary Voltage Curves Indicated Deviations Less than 12 Steps Above Bank Demand Indications  + (03:07:16, 27 May 2025)
• 05000272/LER-1982-046-03, /03L-0:on 820712,two Floor Penetrations in Control Room Found to Be Nonfunctional & Not Included in Surveillance.Caused by Penetrations Being Left Open at Time of Installation.Openings Sealed  + (03:07:20, 27 May 2025)
• 05000339/LER-1982-037-03, /03L-0:on 820618,axial Flux Difference Fluctuated Less than -5% from Target Band for 41 Minutes.Caused by Rapid Power Reduction on Loss of One Feed Pump & Subsequent Insertion of Rods to Control RCS Temp  + (03:07:25, 27 May 2025)
• 05000325/LER-1982-048-03, /03L-0:on 820614,diesel Generator Tripped Due to Generator Reverse Power,Causing Automatic Lockout of Diesel. Caused by Auxiliary Operator Trainee Inadvertently Turning Governor Controller in Decreased Speed Direction.Trip R  + (03:07:27, 27 May 2025)
• IR 05000313/1982010  + (03:07:29, 27 May 2025)
• 05000259/LER-1982-041-03, /03L-0:on 820619,during Control Rod Drive Exercise Rod Block Monitor Channels a & B Became Inoperative.Caused by Shorted Rod Block Relay Which Probably Caused Channel B 5-volt Logic & Fuses in Channels a & B to Blow  + (03:07:32, 27 May 2025)
• 05000369/LER-1982-052-03, /03L-0:on 820613,during Momentary Loss of Power, Channel 1 of Reactor Protection & Instrument Sys,Inverter Evia Failed.Caused by Malfunction of 120-volt Ac Vital Instrumentation & Control Power Sys 15 Kv Static Inverter  + (03:07:33, 27 May 2025)
• 05000338/LER-1982-047-03, /03L-0:on 820618,setpoints for Seismic Trigger for Triaxial Time History Accelerograph Found to Exceed Settings Specified in Fsar.Caused by Instrument Drift. Setpoints Adjusted & Surveillance Test Revised  + (03:07:37, 27 May 2025)
• IR 05000482/1981010  + (03:07:40, 27 May 2025)
• 05000259/LER-1982-039, Reissued LER 82-039/03L-0:on 820609,fuse Blew Resulting in Inboard Primary Containment Isolation.Caused by Shorted Coil for Relay 16A-K66B,GE Type CR120A.Fuse & Relay Coil Replaced & Hydrogen Analyzers Returned to Normal  + (03:07:48, 27 May 2025)
• 05000369/LER-1982-049-03, /03L-0:on 820607,RCS Loop C Reactor Protection Sys Instrumentation Monitoring Flow Channel III Deviated by More than 5% from Other Two Channels.Probably Caused by Component Malfunction.Flow Transmitter Environ Being Investig  + (03:07:54, 27 May 2025)
• 05000364/LER-1982-029-03, 7 River Water Pump Declared Inoperable When Motor Tripped.Caused by Ground Fault on Phase C Power Supply Cable.Defective Cable Replaced & Declared Operable on 820626  + (03:07:56, 27 May 2025)
• 05000327/LER-1982-079-03, /03L-0:on 820618,refueling Water Storage Tank Loop 1-LT-63-51 Found Inoperable Due to Bistable in Test Position.Caused by Personnel Error.Bistable Returned to Svc & Loop Indicator Verified  + (03:07:58, 27 May 2025)
• 05000364/LER-1982-027-03, Steam Jet Air Ejector Noble Gas Activity Monitor Declared Inoperable When Pegged High While All Other Indications Normal.Caused by Faulty Detector.Detector Replaced & Declared Operable on 820622  + (03:07:58, 27 May 2025)
• 05000285/LER-1982-014-03, /03L-0:on 820618,during Process of Switching Component Cooling Water Heat Exchangers,Associated Inlet Valves HCV-498A,HCV-490A & HCV-492A Did Not Open.Cause unknown.HCV-492A Manually Opened.All Valves Operable  + (03:08:01, 27 May 2025)
• 05000259/LER-1982-040, Forwards LER 82-040/03L-0  + (03:08:02, 27 May 2025)
• 05000368/LER-1982-022-03, /03L-0:on 820614,containment Atmosphere Gaseous & Particulate Radioactive Monitoring Sys Sample Pumps 2RITS-8271-2 & 2RITS-8231-1 Not Operating.Caused by Lost Suction & Low Air Flow.Air Flow Adjusted & Pump Restarted  + (03:08:10, 27 May 2025)
• 05000302/LER-1982-043-03, /03L-0:on 820618,intermediate Range Auxiliary Power Supply for NI-4 Found Out of Tolerance During Reactor Protective Sys Functional Testing.Caused by Instrument Drift.Instrument Recalibr & Tested Per Procedure SP-110  + (03:08:17, 27 May 2025)
• 05000327/LER-1982-075-03, /03L-0:on 820618,steam Generator Blowdown Containment Isolation Valve 1-FCV-1-7 Declared Inoperable. Caused by High Temp Environ Surrounding Operator Due to Diaphragm Failure.Diaphragm Replaced  + (03:08:18, 27 May 2025)
• 05000335/LER-1982-025-03, /03L-0:on 820616,routine Surveillance Revealed That Pressurizer Safety Valve V-1200 Acoustic Flow Position Indicator Inoperable.Cause Unknown.Indicator Will Be Repaired or Replaced During Next Outage  + (03:08:20, 27 May 2025)
• 05000338/LER-1982-044-03, /03L-0:on 820617,restricting Orifice in Quench Spray Sys Blanked Off During Power Operation.Caused by Installation of Plank to Allow Type C Testing on Quench Spray Check Valve.Blank Replaced W/Orifice  + (03:08:21, 27 May 2025)
• 05000339/LER-1982-027-03, /03L-0:on 820620 & 23 Axial Flux Difference Went Less than -5% from Target on Two Occasions.Caused by Inability to Establish Stable Axial Flux Difference Target in New Core  + (03:08:26, 27 May 2025)
• 05000339/LER-1982-036-03, /03L-0:on 820618,channel IV Steam Flow Indicator for Steam Generators B & C Failed Low.Cause of Both Events Unknown.Channels Placed in Tripped Condition & Approved Calibr Procedure Performed  + (03:08:28, 27 May 2025)
• 05000260/LER-1982-019-03, /03L-0:on 820618,while Performing SI-2 (Rod Notch Exercise),Flow Bias Comparator Trip Prevented Rod Withdrawal.Caused by Gemac 563-02 Proportional Amplifier (FQ-68-81) Drifting Upscale.Amplifier Replaced  + (03:08:33, 27 May 2025)

• 05000280/LER-1982-072, Forwards LER 82-072/03L-0 & 82-068/03L-0  + (03:08:45, 27 May 2025)

• 05000267/LER-1982-026-03, /03L-0:on 820615,total Primary Coolant Oxidants Exceeded Limiting Conditions for Operation on Two Occasions. Caused by Water in Core Due to Sudden Pressure Surge from Loss of 480-volt Essential Busses.Concentrations Reduced  + (03:08:50, 27 May 2025)
• 05000348/LER-1982-030, Forwards LER 82-030/03L-0  + (03:08:53, 27 May 2025)
• 05000369/LER-1982-053-03, /03L-0:on 820624,during Plant Cooldown,Static Inverter Evia Malfunctioned,Causing RHR Sys Negative Declaration Isolation Valve to Close.Caused by Component Failure of Solidstate Controls,Inc Static Inverter  + (03:08:55, 27 May 2025)
• 05000280/LER-1980-059-01, Util Informed of Potential for Loss of Auxiliary Feedwater Flow Following Steamline Rupture.Caused by Original Design Allowing Pump Runout & Subsequent Tripping of Sys Pump Motors  + (03:09:00, 27 May 2025)
• IR 05000482/1981012  + (03:09:02, 27 May 2025)
• 05000280/LER-1979-045-01, Air Would Not Flow Through Filters If Consequence Limiting Safeguards hi-hi Signal Removed from Control Circuit of Safeguards Area Exhaust Ventilation Dampers.Caused by Design Deficiency  + (03:09:03, 27 May 2025)
• 05000325/LER-1982-064-03, /03L-0:on 820615,post-accident Monitoring Control Room Recorder/Indicator 1-CAC-AR-1259 Erraticaly Indicated Drywell Oxygen Concentrations.Caused by Erratic Instrument Output Due to Unknown Causes.Unit Replaced  + (03:09:06, 27 May 2025)
• IR 05000286/1982009  + (03:09:35, 27 May 2025)
• ML20055B642  + (03:09:37, 27 May 2025)
• IR 05000334/1981027  + (03:09:58, 27 May 2025)
• 05000311/LER-1982-052-03, /03L-0:on 820618,steam Generator 21 Steam Flow Channel II Discovered Reading Low.Caused by Instrument Drift.Transmitter Recalibr & Returned to Svc  + (03:10:00, 27 May 2025)
• IR 05000277/1981024  + (03:10:09, 27 May 2025)
• IR 05000373/1981048  + (03:10:18, 27 May 2025)
• 05000289/LER-1982-010-99, /99X-0:on 820526,engineered Safeguards Actuation Sys Failed to Come Out of Bypass During post-maint Testing Following Triac Replacement.Caused by Hampering of New Triac Drop Out Due to Induced Voltage on Input Circuit  + (03:10:30, 27 May 2025)
• 05000334/LER-1982-021-03, /03L-0:on 820614,outside Recirculation Spray Pump, RS-P-2A,developed Seal Accumulator Level Trouble.Caused by Binding of Seal Bellows Which Unloaded Mechanical Seal Resulting in Water Leakage.Seal Parts Replaced  + (03:10:32, 27 May 2025)
• 05000317/LER-1982-029-01, /01T-0:on 820628,during Mode 3,automatic Start Feature for Auxiliary Feed Pumps 11 & 12 Inhibited.Caused by Procedural Inadequacy Due to Handswitches for MSIV in pull-to-lock Position.Procedure Modified  + (03:10:36, 27 May 2025)
• 05000219/LER-1982-033-03, /03L-0:on 820613,control Rod Driveline Pump a Failed to Operate.Apparently Caused by Enlarging of Interstage Bushing Clearances in Rotating Assembly.Rotating Assembly Replaced  + (03:11:16, 27 May 2025)
• 05000219/LER-1982-036-03, /03L-0:on 820618,water from Disassembled Control Rod Driveline Pump Found Overflowing from Temporary Drain Assembly Onto Core Spray Pump a Motor Housing.Cause Not Stated.Megger Check Performed on Core Spray Pump  + (03:11:29, 27 May 2025)
• ML20055B411  + (03:11:32, 27 May 2025)
• 05000336/LER-1982-022-03, /03L-0:on 820609,fire Actuation Signal in Diesel Generator Room a Tripped Clean Fuel Transfer Pump,Allowing Clean Fuel Tank to Overflow.Caused by Shorted Fire Alarm Pull Box,Due to Ingress of Rainwater.Shield Installed  + (03:12:45, 27 May 2025)
• 05000293/LER-1982-018-03, /03L-0:on 820610,master Fire Detection Alarm Panel C-220 Declared Inoperable Due to Inability to Reset Trouble Alarm.Caused by Faulty Reset Switch on Fire Trouble Control Board.Switch Replaced & Sys Returned to Svc  + (03:12:58, 27 May 2025)
• 05000338/LER-1982-043-03, /03L-0:on 820614,one Coolant Loop Declared Inoperable.Caused by Failure of RHR Subsystem B Pump 1-RH-P-1B.Impeller,motor W/Integral Pump Shaft & Mechanical Seal Replaced  + (03:13:06, 27 May 2025)
• 05000369/LER-1982-051-03, /03L-0:on 820608,125-volt Battery Evca Returned to Svc Prior to Verification of Operability.Caused by Personnel Error.Battery Reisolated & Operability Verified.All Employees Cautioned.Procedure Modified  + (03:13:15, 27 May 2025)
• 05000416/LER-1982-004-03, /03L-0:on 820616,prior to Initial Fuel Load,Area Radiation Monitoring Sys Failure Alarm Initiated.Probably Caused by Transient Which Allowed Meter to Fall in Downscale Range of Monitor.Sys Tested & Declared Operable  + (03:13:16, 27 May 2025)
• 05000247/LER-1982-024-03, /03L-0:on 820608,charging Pump 23 Developed Leak & Declared Inoperable.Cause of Leaking Head Gasket Not Stated.Head Gasket Replaced.Pump Tested Satisfactorily & Returned to Svc  + (03:13:24, 27 May 2025)