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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

• 05000395/LER-1983-016-03, /03L-0:on 830216,w/plant in Mode 1,discrepancy of 6% Observed Between Main Control Board Indicators for Sodium Hydroxide Storage Tank Level.Caused by Loose Fitting on High Side Sensing Line of Level Transmitter  + (14:01:00, 26 May 2025)
• 05000318/LER-1983-029-03, /03L-0:on 830515,during Startup,Dose Equivalent I-131 Determined to Be 1.38 Uci Per G.Caused by Iodine Spiking Due to Leaking Fuel Pins & Change in Power Level. Sampling Frequency Increased  + (14:01:02, 26 May 2025)
• ML20072G369  + (14:01:04, 26 May 2025)
• ML20072G364  + (14:01:05, 26 May 2025)
• 05000334/LER-1983-006-03, /03L-0:on 830212,trip Valve (TV-MS-101B) Failed to Close During Stroke Test.Caused by Combination of Debris That Caused Slight Cylinder Scoring & Loose Pivot Arm.Piston Dressed Up & Cylinder Wall Honed  + (14:01:07, 26 May 2025)
• 05000317/LER-1983-028-01, /01T-0:on 830527 Discovered That Both ECCS Pump Room Air Coolers Out of Svc from 830524-25.Caused by Failure to Realize Potential Safety Significance of Coolers Prior to Isolation for Maint  + (14:01:11, 26 May 2025)
• ML20072G332  + (14:01:14, 26 May 2025)
• L-83-143, Interim Deficiency Rept Re Radiation Monitoring Sys Display Panel Lockup.Initially Reported on 830210.Final Rept Will Be Submitted on 830325.Evaluation in Progress  + (14:01:20, 26 May 2025)
• 05000387/LER-1983-082-01, /01P-0:on 830607,main Turbine Trip Function (High Reactor Vessel Level) Bypassed for post-mod Testing on Turbine Control Valves.Trip Function Not Returned to Svc Prior to Operational Condition 1  + (14:01:28, 26 May 2025)
• 05000318/LER-1983-026-03, /03L-0:on 830515,MSIV 21 Stroked Shut in 3.62 s, Exceeding Tech Spec Limit.Caused by Loose Arm on Position Switch 2-25-4043A.Arm Adjusted & Tightened & full-stroke Test Will Be Performed During Next Shutdown  + (14:01:49, 26 May 2025)
• 05000395/LER-1983-015-03, /03L-0:on 830219,while in Mode 1,5% Discrepancy Observed Between Main Control Board & Control Room Evacuation Panel Indication for Pressurizer Relief Tank Level.Caused by Design Error.New Transmitter Installed  + (14:01:50, 26 May 2025)
• 05000361/LER-1983-052-03, /03L-0:on 830524,purge/vent Stack Radiation Monitor 2RI-7865 Failed.Caused by Failure of Crystal Oscillator & Input/Output Board in Microprocessor.Crystal Oscillator & Board Replaced  + (14:01:51, 26 May 2025)
• 05000267/LER-1981-016-03, During Testing,Three of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:04, 26 May 2025)
• 05000267/LER-1981-006-03, During Annual Testing & Calibr,Six of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:07, 26 May 2025)
• 05000267/LER-1980-051-03, During Testing,Five of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:12, 26 May 2025)
• 05000267/LER-1980-041-03, During Testing,One of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:14, 26 May 2025)
• 05000267/LER-1980-034-03, During Testing,Two of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:17, 26 May 2025)
• 05000267/LER-1980-026-03, During Testing,Eight of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:20, 26 May 2025)
• 05000267/LER-1980-016-03, During Testing,Four of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:23, 26 May 2025)
• L-02-013, Structural Evaluation of Arkansas Nuclear One-Unit 2 Spent Fuel Storage Facility for Consolidated Fuel Storage  + (14:02:30, 26 May 2025)
• 05000267/LER-1979-056-03, During Testing,Seven of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:37, 26 May 2025)
• 05000267/LER-1979-032-03, During Testing,Four of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Would Not Trip.Caused by Dirt Accumulation in Electrical Switches.Switches Replaced  + (14:02:42, 26 May 2025)
• 05000336/LER-1983-020, :Ongoing Eddy Current Exams Identified Number of Steam Generator Tubes W/Defects Which Required Both Steam Generators to Be Placed in C-3 Insp Category.Frequency of Occurrence Primarily on Cold Leg Side  + (14:02:45, 26 May 2025)
• 05000416/LER-1982-172-99, Penetration AE154C in Auxiliary Bldg Opened to Perform Planned Maint.Penetration Opened to Pull Cable Through.Limiting Condition for Operation Initiated & Hourly Fire Watch Established  + (14:03:06, 26 May 2025)
• 05000296/LER-1982-064-03, Radiochemcial Lab Personnel Discovered Inlet Sample Hose on 3-90-250 Turbine & Reactor Zone Exhaust CAM Disconnected.Cause Unknown.Hose Reconnected  + (14:04:03, 26 May 2025)

• 05000272/LER-1983-023-01, /01T-0:on 830602,notification Received from Westinghouse Re Potential Increased Power Peaking in Bottom of Core.Procedures Will Be Implemented to Insure Operation within Tech Spec Limits  + (14:04:19, 26 May 2025)

• 05000368/LER-1983-025-01, /01T-0:on 830615,determination Made That Since 830517,one Rdt in RCS Degraded to Point That Effective Rdt Time Constant of Core Protection Calculator,Channel D Not Adequately Compensated Per Tech Specs  + (14:05:27, 26 May 2025)
• 05000373/LER-1983-054-03, /03L-0:on 830520,drywell Air & Suppression Chamber Air/Water Temp Functional Test Discovered Not Performed Since 820427.Caused by Personnel Failure to Incorporate Test in Computerized Surveillance Program  + (14:06:24, 26 May 2025)
• ML20072E512  + (14:06:26, 26 May 2025)
• 05000454/LER-1994-006-04, :on 940715,fuel Assembly Located in Wrong Region of Spent Fuel Pool Due to Personnel Error.Nuclear Matl Custodian & Individual That Performed Independent Verification Counseled  + (14:06:31, 26 May 2025)
• L-94-024, Forwards Unit 1 Refueling 21 ISI Summary Rept, Per ASME Section XI,IWA-6230  + (14:06:39, 26 May 2025)
• 05000267/LER-1983-009-01, /01T-0:on 830223,four Masonry Walls Found to Have Inadequate Structural Strength to Withstand Design Criteria Load Combination.Caused by Lack of Dur-O-Wall.Mod Reinforcing Walls W/Steel Bar Straps Completed  + (14:06:47, 26 May 2025)
• 05000272/LER-1983-017-03, /03L-0:on 830215,containment Sump Pumps 11 & 12 Found Running Continuously.To Prevent Damage,Pumps de-energized & Tagged Out.Caused by Level Detector LD-7749 Malfunctioning Due to Binding in Magnetic Sleeve Assembly  + (14:06:48, 26 May 2025)
• 05000317/LER-1983-011-03, /03L-0:on 830212,during Mode 1,refueling Water Tank Level Decreased Below Tech Specs Limit.Caused by Failure of Operating Instruction to Require Shutting of Spent Fuel Pool Pump 11 Suction.Instruction Corrected  + (14:06:53, 26 May 2025)
• ML20072E187  + (14:06:58, 26 May 2025)
• ML20072E158  + (14:07:01, 26 May 2025)
• ML20072E142  + (14:07:04, 26 May 2025)
• 05000318/LER-1983-012-03, /03L-0:on 830211 & 0306,dose Equivalent I-131 Exceeded 1.0 Mci/G.Caused by Iodine Spiking Due to Small Number of Leaking Fuel Pins & Change in Power Level. Frequency of Sampling Increased Until Levels Decreased  + (14:07:08, 26 May 2025)
• 05000321/LER-1981-018-01, During Refueling Shutdown/Mod Outage,Cracks Discovered in Concrete Wall Around Base Plate of Beam B2 in Northeast Diagonal.Caused Unknown.Beam B2 Resupported  + (14:07:11, 26 May 2025)
• 05000267/LER-1983-005-03, /03L-0:on 830207,reactor Dewpoint Exceeded Limits. Caused by Buffer Helium Sys Upset Due to 830128 Trip. Dewpoint Reduced W/Helium Purification Sys  + (14:07:14, 26 May 2025)
• 05000321/LER-1981-018, Forwards Updated LER 81-018/01X-1  + (14:07:16, 26 May 2025)
• 05000250/LER-1983-003-03, /03L-0:on 830128,local Indication of Emergency Diesel Generator B Showed Low Starting Air Pressure of 150 Psig.Caused by Loose Tension Spring Nut on Low Starting Air Pressure Alarm Sensing Switch.Setpoint Adjusted  + (14:07:21, 26 May 2025)
• 05000416/LER-1983-043-03, /03L-0:on 830131,smoke Detectors for Upper Cable Spreading Room in Control Bldg (Zone 1-23) Alarmed & Would Not Reset.Possibly Caused by Dust in Detector.Detector Cleaned & Return to Svc  + (14:07:27, 26 May 2025)
• 05000272/LER-1983-016-03, /03L-0:on 830211,containment Air Particulate Monitor Indicated off-scale Low.Caused by Signal Lead to Scintillation Detector Open in Detector Cable Connector. Cable Apparently Strained During Maint.Connector Replaced  + (14:07:35, 26 May 2025)
• ML20072D954  + (14:07:41, 26 May 2025)
• 05000366/LER-1980-113, Forwards Updated LER 80-113/03X-1  + (14:07:43, 26 May 2025)
• 05000327/LER-1983-018-03, /03L-0:on 830201,containment Internal Differential Pressure Exceeded 0.3 Psig Relative to Annulus Pressure. Caused by Failure of Emergency Gas Treatment Sys Suction Damper to Open Causing High Vacuum in Annulus  + (14:07:48, 26 May 2025)
• 05000364/LER-1983-009-03, /03L-0:on 830217,pressurizer PORV 444B Declared Inoperable When Pressurizer Pressure Controller Card 444A Failed Low.Caused by Failure of Driver Card.Porv 444B Declared Operable Following Calibr & Replacement of Card  + (14:07:50, 26 May 2025)
• 05000321/LER-1983-007-03, /03L-0:on 830218,HPCI Turbine Would Not Trip at Less than 5,000 Rpm.Caused by Chipped Ball on ball-tappet assembly.Ball-tappet Assembly Replaced  + (14:07:52, 26 May 2025)
• 05000339/LER-1983-015-03, /03L-0:on 830202,ESF P-12 Interlock Reset Value Found Out of Limit High on One of Three Channels.Caused by Erratic & Sensitive Potentiometer on Comparator Card TC-432E.Card Replaced  + (14:07:57, 26 May 2025)
• 05000275/LER-1983-005-04, /04X-0:on 830502,prior to Fuel Load & Following Coalinga Earthquake,Unusual Event Declared Based on Earthquake Motion Felt at Plant w/.5 G Full Upscale Indication.Caused by Faulty Reset Switch  + (14:08:00, 26 May 2025)