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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

• 05000278/LER-1976-065-03, LER 76/065/03L:on 760921,isolation Valve AO-5235 Failed to Respond to Manual Close Signal.Caused by Stuck Plunger. Plunger Freed & Valve Operated Properly  + (07:16:56, 14 December 2024)
• ML20086F302  + (07:16:57, 14 December 2024)
• 05000278/LER-1976-066-01, /01T:on 760921,trip Level Setting for Permissive Core Spray,Lpci Injection Valves & Recirculation Pump Discharge Valve Set at Improper Level.Caused by Lack of Communication Between NSSS & Licensee  + (07:16:58, 14 December 2024)
• 05000278/LER-1976-067-03, /03L:on 760927,condenser Low Vacuum Switch PS-3-5-11A Tripped 0.26 Inches Below Tech Spec Min.Caused by Setpoint Drift.Switch Calibr,Tested for Repeatability & Returned to Svc  + (07:17:00, 14 December 2024)
• 05000278/LER-1976-068-03, /03L:on 761005,rod Block Setting on B APRM Found 10% Higher than Tech Spec Requirement.Caused by Setpoint Drift.Trip Card Recalibr & Tested  + (07:17:02, 14 December 2024)
• ML20086F295  + (07:17:03, 14 December 2024)
• 05000278/LER-1976-069-03, /03L:on 761011,core Flow Bias Input to a Logic APRM String Found 4% High.Caused by Absence of Offset Signal in GE Flow Bias Proportional Amplifier.Amplifier Removed from Svc & Signal Normalized.Failure Not Duplicable  + (07:17:04, 14 December 2024)
• 05000278/LER-1976-072-01, /01T:on 761110,surveillance Test Analysis of Weight Percentage of Sodium Pentaborate in Solution Fell Below Tech Spec Min.Caused by Normal Makeup for Sys Leakage, Water Evaporation & Test Sample Usage  + (07:17:06, 14 December 2024)
• 05000278/LER-1976-073-03, /03L:on 761110,RCIC Inboard Steam Supply Isolation Valve MO-3-13-15 Failed to Close from Handswitch During Surveillance Test.Cause Unknown.Valve Declared Inoperable & Outboard Isolation Valve Closed  + (07:17:08, 14 December 2024)
• 05000278/LER-1976-074-03, /03L:on 761123,core Spray B Full Flow Test Return Valve Failed to Close During Surveillance.Caused by Torque Switch Setting to Low.Torque Switch Setting Increased & Valve Satisfactorily Stroked  + (07:17:10, 14 December 2024)
• 05000278/LER-1977-001-01, /01T:on 770106,ultrasonic Test Indicated Crack Close to Weld 4 in Bypass Piping 4 Around Recirculation Pump Discharge Valve B.Cause Under Investigation.Section Will Be Replaced & Reexamined Prior to Return to Svc  + (07:17:12, 14 December 2024)
• 05000278/LER-1976-076-01, /01T:on 761208,drywell Oxygen Concentration Increased 0.4% Above License Limit of 4%.Caused by out-of-svc Nitrogen to Drywell Instrument.Need for Limit Adherence Will Be Stressed  + (07:17:14, 14 December 2024)
• NRC-95-4503, Forwards Proprietary Preliminary Marked Up Sections of SSAR Chapter 15 (Accident Analyses).Encl Withheld Per 10CFR2.790  + (07:17:15, 14 December 2024)
• 05000278/LER-1977-002-01, /01T:on 770110,nine Snubbers Found W/Empty Reservoirs.Grinnel Snubber Models AH1372,1373 & 1423 Experienced Seal Degradation,Resulting in Cylinder,Valve Block & Reservoir Leaks.Snubbers to Be Replaced & Tested  + (07:17:20, 14 December 2024)
• ML20086F277  + (07:17:21, 14 December 2024)
• 05000278/LER-1977-003-01, /01T:on 770114,insp of Torus Support Columns Found 11 of 32 Columns Showing Visual Indications of Plate Laminations.Caused by Normal Inperfections in Rolled Steel Produced During Rolling Process.No Strengthening Necessary  + (07:17:22, 14 December 2024)
• 05000278/LER-1977-004-01, /01T:on 770121,ultrasonic Test Indicated Crack in HAZ on Reducer Side of Reducer to 12-inch Pipe Weld Near Vessel.Caused by Intergranular Stress Corrosion.Repair Will Be Made Prior to Return to Svc  + (07:17:24, 14 December 2024)
• 05000278/LER-1977-005-01, /01T:on 770128,during Insertion of Fuel Element Pb 0349,rod Inadvertently Released While Resting on Adjacent Element.Caused by Operator Elbow Bumping open-close Switch. Elements Removed & Replaced  + (07:17:26, 14 December 2024)
• 05000277/LER-1976-015-01, /01T:on 760304,gaseous Release Rate Exceeded Tech Spec Limit.Caused by Backwash Delay.Mod Currently Under Investigation Would Direct Backwash Venting to Hotwell, Allowing Gaseous Effluent Benefit of Offgas Sys  + (07:17:28, 14 December 2024)
• 05000277/LER-1976-016-03, /03L:on 760309,drywell Radiation Monitor Had No Sample Flow.Caused by Defective Coil.Coil Replaced & Sys Returned to Normal Operation  + (07:17:30, 14 December 2024)
• ML20086F267  + (07:17:31, 14 December 2024)
• 05000277/LER-1976-018-01, /01T:on 760329,gaseous Release Rate Exceeded Rate Allowable.Caused by Depressurization of Reactor to Main Condenser.Release Rate Returned to Normal,Vacuum Established & Depressurization Restarted  + (07:17:33, 14 December 2024)
• 05000277/LER-1976-019-03, /03L:from 760315 to 760328,RHR HX 2A Leak Permitted Radioactive Water to Leak from Condensate Storage Transfer Sys to River.Caused by Two Leaking Tubes & Failed Internal Bellows  + (07:17:35, 14 December 2024)
• 05000277/LER-1976-021-03, /03L:on 760329,leakage of Feedwater Check Valves, Inboard 28A & 28B & Outboard 96A & 96B Discovered. Caused by Rust Scale on Seating Surfaces of Valve Seat & Flapper.Valves Inspected,Relapped & Returned to Svc  + (07:17:36, 14 December 2024)
• 05000277/LER-1976-023-03, /03L:on 760405,drywell High Pressure Switches PS-2-10-101C & PS-2-10-119C Found Valved Out of Svc.Caused by Personnel Error.Verification of Valve Lineup After Tests Emphasized  + (07:17:38, 14 December 2024)

• 05000277/LER-1976-024-03, /03L:on 760408,control Room Radiation Monitor RIS-0760A Failed in Low Count Direction.Caused by Logic Chip Vibrating Out of Socket.Logic Chip Reinserted & Unit Operated Properly  + (07:17:40, 14 December 2024)

• 05000277/LER-1976-026-03, /03L:on 760327,torus Vol Found Below Allowable Limit of Tech Spec.Caused by Operator Inadvertently Permitting Level to Drop Below Limit.Vol Restored to Normal  + (07:17:42, 14 December 2024)
• 05000277/LER-1976-027-03, /03L:on 760409,relief Valve Bellows Leak Detector Switch PS-2-2-71L Failed to Trip as Result of Broken Wire Connector to Switch.Connector Replaced  + (07:17:44, 14 December 2024)
• 05000455/LER-1991-003-11, :on 911026,experienced RCS Leak in Excess of TS Requirements.Caused by Failed Packing Associated w/2RC029C Valve.Packing on Subj Valve Replaced  + (07:17:46, 14 December 2024)
• 05000277/LER-1976-028-01, /01T:on 760413,review of RHR Logic Identified Design Deficiency Which Would Result in Starting of Only Two Pumps During LOCA Concurrent W/Loss of Offsite Power. Circuitry Modified & Tested to Verify Proper Operation  + (07:17:47, 14 December 2024)
• 05000277/LER-1976-029-03, /03L:on 760423,setpoint of Secondary containment- to-torus Vacuum Breaker DPIS-2503B Switch Found to Be 0.011 Psid Above Tech Spec Limit.Caused by Setpoint Drift.Switch Recalibr & Returned to Svc  + (07:17:49, 14 December 2024)
• 05000277/LER-1976-030-01, /01T:on 760428,two Hydraulic Snubbers on HPCI Sys Found Inoperable Because of Empty Reservoirs.Caused by Defective Seals & O Rings.Defective Parts Will Be Replaced & Snubbers Tested  + (07:17:51, 14 December 2024)
• 05000277/LER-1976-031-01, /01T:on 760428,11 Hydraulic Snubbers on Main Steam Relief Valve Discharge Lines Found Inoperable.Ten Inoperable Because of Empty Reservoirs & One Because of Rotated Reservoir.Caused by Defective Seals & O Rings  + (07:17:53, 14 December 2024)
• 05000277/LER-1976-032-01, /01T:on 760428,two Hydraulic Snubbers on Main Steam Line Ring Header Found Inoperable Due to Empty Reservoirs.Caused by Defective Seals & O Rings.Defective Parts Will Be Replaced & Snubbers Tested  + (07:17:55, 14 December 2024)
• ML20086F229  + (07:17:56, 14 December 2024)
• 05000277/LER-1976-033-01, /01T:on 760428,hydraulic Snubber SS-2-B on Recirculation Pump Sys Found Inoperable Due to Empty Reservoir.Caused by Defective Seals & O Rings.Defective Parts Will Be Replaced & Snubbers Tested  + (07:17:58, 14 December 2024)
• 05000277/LER-1976-034-01, /01T:on 760428,snubber on Reactor Water Cleanup Sys Found Inoperable Due to Empty Reservoir.Caused by Defective Seals & O Rings.Defective Parts Will Be Replaced & Snubber Will Be Tested  + (07:17:59, 14 December 2024)
• 05000277/LER-1976-035-01, /01T:on 760428,two Hydraulic Snubbers on Core Spray Sys Found Inoperable Due to Fluid Reservoirs Rotated to Horizontal Position.Cause Not Determined.Snubbers Being Repaired & Will Be Tested  + (07:18:01, 14 December 2024)
• 05000277/LER-1976-036-01, /01T:on 760428,three Hydraulic Snubbers on Feedwater Sys Found Inoperable.Two Snubbers Failed Because of Rotated Reservoir.Snubbers Repaired or Will Be Repaired  + (07:18:03, 14 December 2024)
• 05000277/LER-1976-037-03, /03L:on 760426,reactor Level Switch LIS 2-2-3-101B Observed to Bounce When Trip Signal Applied.Caused by Defective Microswitch in Barton Model 288A Level Indicating Switch.Microswitch Replaced,Recalibr & Tested  + (07:18:05, 14 December 2024)
• 05000277/LER-1976-039-03, /03L:on 760507,required Source Range Monitor Surveillance Test Not Done Due to LPRM String Replacement. Importance of Test Completion Emphasized to Personnel  + (07:18:07, 14 December 2024)
• 05000277/LER-1976-040-03, /03L:on 760509,gamma Scan Not Performed Prior to Two Liquid Effluent Releases.Caused by Lack of Radwaste Storage Capacity.Beta Activity Reviewed Prior to Release. Based on Previous Data,Limit Would Not Be Exceeded  + (07:18:09, 14 December 2024)
• 05000277/LER-1976-041-03, /03L:on 760519,reactor Recirculation Pump a Discharge Valve MO-2-02-53A Could Not Be Closed Following Minor Mod of Valve Control Circuit.Caused by Broken Wire in Closing Control Circuit.Broken Wire Repaired  + (07:18:10, 14 December 2024)
• 05000277/LER-1976-042-03, /03L:on 760528,three Liquid Radwaste Releases Made W/Gross Activity Recorder Inoperable.Caused by Defective GE 1095K66707 Recorder Amplifier.Amplifier Replaced & Monitor & Recorder Recalibr & Returned to Svc  + (07:18:12, 14 December 2024)
• 05000277/LER-1976-046-01, /01T:on 760629,all Four Recombiner Hydrogen Analyzers Found Valved Out of Svc.Caused by Procedural Deficiency.Plant Procedures Revised  + (07:18:14, 14 December 2024)
• 05000277/LER-1976-047-01, /01T:on 760629,main Steam Relief Valve Failed Open.Caused by Pilot Valve Seat Leakage.Relief Valve Replaced  + (07:18:16, 14 December 2024)
• 05000277/LER-1976-049-03, /03L:on 760619,failure of Common Power Supply to Refuel Floor Exhaust Vent Radiation Monitor & Reactor Bldg Exhaust Vent Radiation Monitor Caused Downscale Failures. Power Supply Replaced.Monitors Returned to Svc  + (07:18:18, 14 December 2024)
• 05000277/LER-1976-051-01, /01T:on 760711,sample Flow to Main Stack Sampling Sys Disturbed When Lightning Blew Fuses in Flow Control Valve Circuitry.Damaged Components & Blown Fuses Replaced  + (07:18:20, 14 December 2024)
• 05000277/LER-1976-052-03, /03L:on 760710,probe 1 Stopped 1 Inch Before Reaching Preset Shield Limit During Withdrawal & Machine Ball Valve Did Not Close.Probe Machine Shield Limit Switch Operated Spuriously Causing Incomplete Withdrawal  + (07:18:25, 14 December 2024)
• 05000277/LER-1976-053-03, /03L:on 760712,second Quarter Average Release Rate for Iodine & Particulate Exceeded Tech Spec.Caused by Shutdown & Depressurization for Refueling  + (07:18:27, 14 December 2024)
• ML20086F210  + (07:18:28, 14 December 2024)