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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

• 05000302/LER-1982-033-03, Reactor Bldg Pressure Indicator BS-16-PI Discovered Inoperable.Caused by Instrument Drift.Bailey Transmitters BS-16-PT & BS-17-PT Replaced W/Rosemount Transmitters & Calibr  + (08:31:35, 26 May 2025)
• 05000498/LER-1995-006, :on 950420,failed to Meet Requirements of TS Due to Not Performing Required Surveillance on H Recombiner. Held Briefings to Stress Need for Proper Identification of Components During Performance of Activities  + (08:32:06, 26 May 2025)
• L-77-228, Forwards Rept on Sys Disturbance 770516  + (08:32:11, 26 May 2025)
• 05000302/LER-1995-007, :on 950421,inattention to Detail Caused Delay in Performance of Surveillance That Resulted in Violation of Improved Ts.Counselled Individuals Involved & Revised Procedures  + (08:32:15, 26 May 2025)
• 05000220/LER-1976-030, :on 760805,review Revealed That Condenser Delta Temp & Discharge Canal Temp Not Recorded Hourly During 760717-22.Caused by Computer Typers Being Down Due to New Instrumentation Installation.Data Through 760731 Invalid  + (08:32:28, 26 May 2025)
• ML20084B442  + (08:32:35, 26 May 2025)
• 05000220/LER-1976-044, :on 761116,one Emergency Vent Loop Taken Out of Svc.Caused by Repairs Being Made on Bent Observation Door While Unit on Load  + (08:32:41, 26 May 2025)
• 05000220/LER-1977-003, :on 770304,reactor low-low-low Instrument Level Setpoint Found Below Required Setting.Caused by Instrument Setpoint Change.Setpoint Reset  + (08:32:44, 26 May 2025)
• 05000220/LER-1977-004, :on 770307,one Solenoid Operated Pressure Relief Valve Found Set Lower than Required.Caused by Instrument Setpoint Change.Setting Reset  + (08:32:49, 26 May 2025)
• 05000220/LER-1977-011, :on 770320,one Reactor low-low Water Level Trip Found Lower than Required Setpoint.Caused by Setpoint Change While Sys Bypassed for Maint & Special Level Instrumentation in Svc  + (08:32:54, 26 May 2025)
• 05000220/LER-1977-015, :on 770404,shutdown Pump Tripped During Lowering of Water Level to Clear Temporary Shield Work Platform. Caused by Excessive Water Lowering in Reactor Annulus Area. Addl Water Level Monitoring Added  + (08:32:59, 26 May 2025)
• 05000220/LER-1977-016, :on 770406,possible Tech Spec Noncompliance Found Re Frequency,Location & Sampling Period.Caused by Ambiguous Wording Concerning Trapnet Procedures.Environ Contractor Will Propose & Implement Trapnet Procedures  + (08:33:05, 26 May 2025)
• 05000220/LER-1977-018, :on 770416,one Pair of Drywell Air Vent & Fill Valves Would Not Pressurize to Type C Isolation Valve Leak Rate Test Conditions,Indicating Probable Leakage in Excess of Tech Spec.Cause Not Stated  + (08:33:07, 26 May 2025)
• ML20084B166  + (08:33:16, 26 May 2025)
• 05000338/LER-1981-063-03, Reactor Trip Breaker B Failed to Open When High Pressurizer Pressure Signal Simulated.Caused by Failure of Metal Latch in Undervoltage Trip Attachment.Attachment Replaced  + (08:33:37, 26 May 2025)
• 05000237/LER-1976-063, Updated LER 76-063/03L-l:on 761003,stack Gas Sample Pump Flow Appeared Abnormally Low.Caused by Collection of Carbon Impeller Vane Products in Pump Cavity & Filter.Pump & Filter Replaced  + (08:34:28, 26 May 2025)
• 05000237/LER-1976-066, Updated LER 76-066/01T-1:on 761113,during Maint Outage,Hpci Injection Valve M02-23018 Found in Closed Position W/Valve Stem Severed.Caused by Mechanical Overstress of Stem.Stem Replaced  + (08:34:41, 26 May 2025)
• 05000237/LER-1976-068-03, /03L-0:on 761212,CRD F-5 Found to Uncouple & Overtravel When Withdrawn to Position 48 Following 50% Core Scram Testing.Caused by Loosened Inner Filter.Crd F-5 to Be Disassembled & Insp  + (08:34:50, 26 May 2025)
• 05000237/LER-1976-072-03, /03L-0:on 761228,during Start Up Operations,Crd J-11 Found to Uncouple & Overtravel When Withdrawn to Position H8.Caused by Loosened Inner Filter.Crd J-11 to Be Disassembled & Inspected  + (08:35:06, 26 May 2025)
• 05000364/LER-1984-002, :on 840123,hourly Firewatch Patrol in Train B Auxiliary Bldg Battery Charger Room Not Performed During 1300-1400 & 1400-1500 H.Caused by Personnel Error. Individual Counseled  + (08:35:26, 26 May 2025)
• 05000336/LER-1982-049-01, Fire Water Storage Tanks a & B Found at 190,153 Gallons & 190,074 Gallons, Respectively.Caused by Stripped Gear in Makeup Valve Operator a & Sticking Brake in Operator B  + (08:35:51, 26 May 2025)
• 05000237/LER-1976-053, Updated LER 76-053/01T-1:on 760803,util Advised by GE That MAPLHGR Limits in Effect No Longer Considered Sufficiently Conservative at Low Core Flow Rates.Problem Thought to Be ECCS Models Used to Determine Rates  + (08:35:57, 26 May 2025)
• 05000336/LER-1983-018-03, Reactor Protection Sys Channel A,Low Steam Generator Pressure Bypass Removal Setpoints Found Out of Spec in Nonconservative Direction. Caused by Instrument Shift.Setpoints Adjusted  + (08:36:01, 26 May 2025)
• 05000336/LER-1982-008-03, Reactor Coolant Pump Speed Sensing Bistable Trip Setpoint Found Out of Spec. Caused by Instrument Drift.Bistable Trip Unit Replaced.W/  + (08:36:14, 26 May 2025)
• ML20083R150  + (08:36:18, 26 May 2025)

• A830008, Forwards Low-Low Set Relief Logic Sys & Lower MSIV Water Level Trip for Cooper Nuclear Station Unit 1, Supplementing .Approval of Design Change & Tech Specs Requested by 830501.Rept Withheld (Ref 10CFR2.790).GE Affidavit Encl  + (08:37:51, 26 May 2025)

• ML20083Q036  + (08:38:26, 26 May 2025)
• 05000366/LER-1979-088-03, Surveillance Procedure HNP-2-3353E Not Completed Due to Failure of Charcoal Filter Deluge Sys to Operate Automatically.Caused by Water Pressure Fluctuations.Water Supplies Changed  + (08:39:32, 26 May 2025)
• 05000366/LER-1979-088, Forwards Updated LER 79-088/03X-1  + (08:39:36, 26 May 2025)
• 05000366/LER-1981-127-03, During Normal Surveillance of Diesel Generator 2C,engine Failed & Declared Inoperable.Caused by Rod Separating from Crankshaft Due to Loss of One of Two Retaining Bolts.Engine Repaired  + (08:39:52, 26 May 2025)
• 05000366/LER-1981-127, Forwards Updated LER 81-127/03X-1  + (08:39:57, 26 May 2025)
• 05000446/LER-1994-022-01, Forwards LER 94-022-01 Re Labeling Error Leading to Inoperability of Power Range Instrumentation  + (08:39:59, 26 May 2025)
• 05000366/LER-1980-164-03, Attempt to Pressurize Drywell Equipment Drain Sump to Radwaste Discharge Piping Failed Due to Excessive Leakage Past Outboard Isolation Valve.Caused by Valve Gate Not Seating Properly  + (08:40:04, 26 May 2025)
• 05000366/LER-1980-164, Forwards Updated LER 80-164/03X-1  + (08:40:08, 26 May 2025)
• 05000366/LER-1980-159-03, During Manual Start Test, Diesel Generator 2C Failed.Caused by Broken Cotter Pins That Lock Connecting Rod Nuts in Place for Cylinder 11,allowing Separation from Crankshaft.Engine Repaired  + (08:40:47, 26 May 2025)
• 05000366/LER-1980-159, Forwards Updated LER 80-159/03X-1  + (08:40:49, 26 May 2025)
• 05000321/LER-1980-062-01, Investigation of Pavement Deflection Revealed Settling of Fill Matl Under Svc Water & RHR Svc Water Lines.Caused by Improper Compaction of Area in Front of Intake Structure.Backfill Replaced  + (08:41:07, 26 May 2025)
• 05000321/LER-1980-062, Forwards Updated LER 80-062/01X-1  + (08:41:09, 26 May 2025)
• 05000416/LER-1983-002-01, /01T-0:on 830114,heat Detectors in Control Room Standby Fresh Air Sys Not Functionally Tested.Caused by Lack of Proper Procedure.Surveillance Review Committee Will Write Proper Procedure  + (08:41:34, 26 May 2025)
• ML20083N682  + (08:41:45, 26 May 2025)
• ML20083N652  + (08:41:50, 26 May 2025)
• A830007, Comments on SER & Technical Evaluation Rept for Environ Qualification of safety-related Electrical Equipment Exposed to Harsh Environs,Per IE Bulletin 79-01B.Continued Safe Operation of Facility Reasonably Assured  + (08:42:07, 26 May 2025)
• ML20083N459  + (08:42:18, 26 May 2025)
• 05000369/LER-1994-010-01, Forwards LER 94-010-01 Re Failure to Perform TS Required Surveillance Because Testing Not Specified.Event Considered to Be of No Significance W/Respect to Health & Safety of Public  + (08:42:19, 26 May 2025)
• 05000499/LER-1995-005-01, :on 950412,experienced Inadvertent ESF Actuation of CCW Pump Due to Essential Cooling Water Sys Pressure Switch Being Isolated & Depressurized.Verified Position of Essential CW Isolation Valves  + (08:42:29, 26 May 2025)
• 05000325/LER-1982-044-03, Suppression Chamber Water Level RTGB Instrument 1-CAC-LR-2602 Indicated Incorrect Water Level.Caused by Change in Trickle Flow to Wet Ref Leg of 2602 Recorder Transmitter  + (08:42:41, 26 May 2025)
• 05000325/LER-1982-044, Forwards Updated LER 82-044/03L-2  + (08:42:51, 26 May 2025)
• ML20083N244  + (08:42:55, 26 May 2025)
• 05000318/LER-1982-012-03, Personnel Access Hatch Doors Opened Simultaneously.On 810307 & 09,inner Door Failed in Partially Open Position.Caused by Failed Airlock Mechanism Due to Broken Cam Follower.Overhaul Performed  + (08:43:20, 26 May 2025)
• 05000318/LER-1982-012, Forwards Updated LER 82-012/03X-1  + (08:43:25, 26 May 2025)
• TAC:49156  + (08:43:28, 26 May 2025)