Search by property

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

• 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)
• 05000331/LER-1995-003, :on 950417,reactor Shutdown Completed Due to Shutdown Margin Calculation Error.Vendor Reviewing Processes to Determine Cause of Misprediction of Designed Shutdown Margin  + (08:43:34, 26 May 2025)
• 05000271/LER-1983-001-01, /01T-0:on 830107,containment Isolation Valves Failed to Close When Operator Attempted to Secure Nitrogen Flow.Caused by Accumulation of Ferrous Metal Particles on Magnet Providing Valve Position Indication.Valves Cleaned  + (08:45:01, 26 May 2025)
• 05000271/LER-1983-001, Forwards LER 83-001/01T-0  + (08:45:07, 26 May 2025)
• 05000318/LER-1982-008-03, During Mode 3,inner Containment Door Would Not Latch,Preventing Outer Door from Opening.Caused by Failure of Air Mechanism Due to Broken Cam Follower.Overhaul Performed  + (08:45:19, 26 May 2025)
• 05000416/LER-1983-004, Forwards LER 83-004/01T-0  + (08:45:21, 26 May 2025)
• 05000318/LER-1982-008, Forwards Updated LER 82-008/03X-1  + (08:45:26, 26 May 2025)
• 05000387/LER-1983-001-01, /01T-0:on 830105,main Condenser Offgas Monitor Train Declared Inoperable Precipitating Entry Into Action Statement Requiring Grab Sample Be Taken Every 4 H.Sample Not Taken Due to Technician Error  + (08:45:29, 26 May 2025)
• ML20083L883  + (08:46:28, 26 May 2025)
• ML20083L847  + (08:46:37, 26 May 2025)
• ML20083L815  + (08:46:43, 26 May 2025)
• ML20083L627  + (08:47:14, 26 May 2025)
• 05000259/LER-1984-004-01, Updated LER 84-004-01:on 840106,reactor Mode Switch Moved from Run to Startup,Causing Half Scram.Caused by Personnel Error.Unit Manually Scrammed.Operator & Nuclear Engineer Counseled Re Use of Rod Notch Override  + (08:47:38, 26 May 2025)
• ML20083L240  + (08:48:09, 26 May 2025)
• 05000324/LER-1981-143-03, While Performing Diesel Generator 4 Monthly Load Test,Model F5-1316-HS6 Would Not Assure Steady Load Greater than 1,000 Kw.Cause Undetermined.Diesel Generator Returned to Svc  + (08:48:15, 26 May 2025)
• 05000498/LER-1995-005, :on 950408,failed to Meet Requirements of TS Due to Inoperability of Standby DG as Result of Failed Lug. Replaced Broken Slip Ring Connector & Addl Slip Ring Connector  + (08:48:51, 26 May 2025)
• 05000341/LER-1995-004, :on 950409,unexpected Reactor Water Level 2 & ESF Actuations Occurred After Planned Scram.Caused by Selection of Parameters Used in Post Scram FW Logic Mod Per Engineering Design Package 9207 Installed During RF04  + (08:49:02, 26 May 2025)
• 05000338/LER-1979-001-01, /01T-0 on 790115:non-conservatism Identified in Calculations Performed in Monitoring Axial Power Distribution Fj(Z).Caused by Omission of Sys & Procedures Used to Monitor Fj(Z)  + (08:49:51, 26 May 2025)
• 05000263/LER-1978-030, Forwards Revised LER 78-030/01X-1 to Correct Typographical Error in Valve Identification Number  + (08:50:48, 26 May 2025)
• RA20-015, Triennial Chlorine Survey Report  + (08:51:08, 26 May 2025)
• L-83-576, Responds to NRC Re Violations Noted in IE Insp Repts 50-335/83-29 & 50-389/83-56.Corrective actions:1983 Requalification Program Revised to Include Refresher Training on Procedure AP 0010122, In-Plant Equipment  + (08:51:49, 26 May 2025)
• 05000346/LER-1981-061, Revised LER 81-061/03X-2:on 811003 & 20,absolute Position Indication on Group 4,rod 7 Became Erratic,Fluctuating 5-10% of Full Range.Caused by Loss of Electrical Penetration Module Signal.Module Replaced  + (08:52:28, 26 May 2025)