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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
- 05000255/LER-1981-009-03, /03L-0:on 810115,power Conversion Sys Sample Revealed Dose Equivalent I-131 to Be in Excess of Tech Spec. Caused by Low Level Cladding Failure Combined W/Transient Conditions Following Plant Trip +
- 05000277/LER-1981-013, Forwards LER 81-013/01T-0.Provides Narrative Description of 810203 Occurrence Re Failure of Valves to Meet Seismic Qualification Requirements +
- 05000255/LER-1981-016-03, /03L-0:on 810421,during Normal Power Operation, Primary & Secondary Data Loggers Failed Due to Faulty Circuit Board & Typer Respectively.Replacement of Plant Sys Equipment Under Evaluation +
- 05000277/LER-1981-028, Forwards LER 81-028/01T-0.Detailed Event Analysis Also Submitted +
- 05000277/LER-1981-028-01, /01T-0:on 810428,determined That More Detailed Analysis Was Required & Minor Mods Were Necessary to Assure That Certain Fans Would Perform During Earthquakes.Caused by Fan Supports Not Meeting Seismic Requirements +
- 05000277/LER-1981-024-03, /03L-0:on 810407,recirculation Pump Drive Flow Increase of 10% within 5 Minutes Was Indicated.Cause Undetermined.Investigation Ongoing.Entire Flow Loop Instrumentation Is Being Calibr +
- 05000348/LER-1981-019-03, /03L:on 810408,radiation Monitors R11 & R12 Declared Inoperable When Supply Breaker to Motor Control Ctr Inadvertently Opened.Caused by Personnel Error.Breaker Closed & Monitors Returned to Svc +
- 05000364/LER-1981-005, Forwards LER 81-005/03L-0 +
- 05000334/LER-1981-034-03, /03L-0:on 810410,boric Acid Storage Tank CH-TK-1A Concentration Exceeded Tech Spec.Caused by Insufficient Recirculation of Tank Prior to Sampling After Planned Dilution.Concentration Brought Back to Limits +
- 05000334/LER-1981-034, Forwards LER 81-034/03L-0 +
- 05000364/LER-1981-005-03, /03L-0:on 810408,digital Rod Position Indication Sys Declared Inoperable When Breaker de-energized.Caused by Shorted Transformer.Transformer Replaced +
- 05000277/LER-1981-020-03, /03L-0:on 810325,inboard Containment Radioactive Gas Sampler Isolation Valve SV-2671A Found Leaking.Caused by Plunger Assembly Sticking Due to Dirt Accumulation.Valve Cleaned +
- 05000348/LER-1981-019, Forwards LER 81-019/03L-0 +
- 05000277/LER-1981-021-03, /03L-0:on 810329,while at Full Power,Drywell Pressure Channel D Found Malfunctioning.Caused by Electronic Failure in Rosemount Model 1151 GP Pressure Transmitter. Circuit Boards on Transmitter Replaced +
- 05000334/LER-1981-029-01, /01T-0:on 810325,discrepancy Noted Between Plant Mod Manual & Tech Spec 4.0.5 During Review of Inservice Insp Requirements.Caused by Misinterpretation of NRC Endorsement of ASME XI Code as Authorization to Invoke Tech Spec +
- 05000277/LER-1981-016-03, /03L-0:on 810225,reactor Core Isolation Cooling Trip Throttle Valve Would Not Reset to Normally Open Position Using Limitorque Operator,Following Manual Trip. Caused by Worn Worm Gear in Trip Throttle Valve Operator +
- 05000277/LER-1981-018-03, /03L-0:on 810306,local Leak Rate Test Determined Excessive Leakage from Manual Isolation Valve SV-2671A. Caused by Dirt Buildup on Seating Surface,Preventing Proper Valve Disc Seating.Valve Cleaned & Returned to Svc +
- 05000278/LER-1981-006-03, /03L-0:on 810227,core Spray Logic Sys B Failed. Caused by Blown Fuse Due to Grounded Lug on Core Spray Pump Circuit Breaker D Latch Check Switch.Circuit Breaker Replaced & Lug on Grounded Circuit Breaker Repositioned +
- 05000334/LER-1981-022-03, /03L-0:on 810211,control Room Chlorine Detector 101B Was Tripped Upon Discovering That Electrolyte Was Not Dripping.Cause Not Stated.Flow Orifice Cleaned & Wick Replaced.Investigation Underway +
- 05000277/LER-1981-017-03, /03L-0:on 810318,all Inboard Sample Isolation valves,SV-2671A-SV2671G,closed.Caused by Short in Coil of dymo-type Solenoid Valve SV-2671A,which Blew Common Fuse in Control Circuit for All Seven Valves +
- 05000334/LER-1981-021-03, /03L-0:on 810210,safety Injection Accumulator 1B, (SI-TK-1B) Low Level Alarm Sounded.Caused by Chemist Leaving Valve Open Following Sampling & Tank Draining Down. Valve Shut +
- 05000305/LER-1981-006, Forwards LER 81-006/03L-0 +
- 05000278/LER-1981-007-03, /03L-0:on 810206,main Steam Line Monitor a Indicated Low Level Radiation Resulting in Trip Setpoint Above Tech Spec Limit.Caused by Instrument Zero Drift. Monitor Calibr & Returned to Svc +
- 05000277/LER-1981-012-03, /03L-0:on 810202,main Steam Line Monitor D Indicated Low Level Radiation Resulting in Trip Setpoint Above Tech Spec Limit.Caused by Instrument Zero Drift. Monitor Calibr & Returned to Svc +
- 05000220/LER-1981-055-03, /03L-0:on 810605,visual Insp of Doors & Access Openings for Adequacy of Sealing Documented,But No Record Made of Test Using DOP & Freon.Caused by Vagueness in Procedure NI-RTP-38.Procedure Revised +
- 05000321/LER-1981-112-03, Torus to Rx Bldg Differential Pressure Switches 1T48-N210,N211,2T48-N210 & N211 Proof Press Not within Tech Spec Limit.Caused by Switch Misapplication.Also Reported Per Part 21 +
- 05000364/LER-1981-010, Notifies of Typographical Error in Forwarding LER 81-010/03X-1.Ltr Mistakenly Referred to LER 82-043/01X-1 +
- 05000336/LER-1981-018-03, Mechanical Snubber Discovered Omitted from IE Bulletin 81-01 Evaluation List. No Cause Stated.Snubbers Reviewed & Reclassified as safety-related.Thirty-nine Snubbers Failed Stroke Test +
- 05000267/LER-1981-047-03, During Testing,One of 12 Helium Circulator Seal Malfunction Pressure Differential Switch Units Tripped Outside Limits.Caused by Dirt Accumulation in Electrical Switch.Switch Replaced +
- 05000318/LER-1981-018, Forwards LER 81-018/03L-0 +
- 05000334/LER-1981-024-03, /03L-0:on 810215,during Increase in Power,Delta Flux Out of Target Band Alarm Received.Caused by Xenon Transient Associated W/Power Change Resulting in Increase Axial Flux Differential.Power Increase Stopped +
- 05000331/LER-1981-015, Updated LER 81-015/01T-1:on 810421,lower Crankshaft 14 Bearing Found Wiped on Journal Surface Similar to Problem Identified on Diesel 1G-31.Caused by High Temp.Bearing Replaced & Crankshaft Relapped +
- 05000269/LER-1981-025-03, /03L-0:on 811229 Discharge Valve 1LPSW-24 Could Not Be Reopened After Being Cycled & Shut to Stop Leakage, Rendering Reactor Bldg Cooling Unit C Inoperable.Caused by Operator Torque Limit Switches Vibrating Loose +
- 05000318/LER-1981-018-03, /03L-0:on 810414,short at Motor Connection Box Tripped Charging Pump 22.Caused by Insufficient Insulation of Lead.Facility Change Request Initiated for Std Ref for Low Voltage Application +
- 05000318/LER-1981-023-03, During Normal Operation, RCS Sample valve,CV-5467,failed to Seat Properly.Valve Actuator Spring Required Adjustment to Fully Close & Seat Valve.Valve Stroked & Leak Tested +
- 05000269/LER-1981-025, Forwards LER 81-025/03L-0.Detailed Event Analysis Encl +
- 05000331/LER-1981-016, Updated LER 81-016/01T-1:on 810421,lower Crankshaft Thrust Bearing 13 & Adjacent Bearing 12 Found Wiped on Journal Surface.Caused by High Temp.Crankshaft Thrust Bearings Replaced & Crankshaft Relapped +
- 05000318/LER-1981-023, Forwards Updated LER 81-023/03X-1 +
- 05000321/LER-1981-129, Forwards Updated LER 81-129/01X-1 +
- 05000281/LER-1981-074-03, Higher than Normal Activity Detected in Storm Drain Sys.Caused by Leaks from Stripper Feed Steam Heater Due to Failure of Heater Drain Receiver & Pumps to Prevent Overflow.Tubes Plugged +
- 05000366/LER-1981-115, Forwards Updated LER 81-115/03X-1 +
- 05000317/LER-1981-034, Forwards LER 81-034/03L-0 +
- 05000317/LER-1981-034-03, /03L-0:on 810508,emergency Diesel Generator 11 Failed to Reach Rated Speed While Returning Generator to Svc.Caused by Fuel Racks & Operating Linkages Sticking & Damaged Set Screw Rubbing Against Linkage +
- 05000250/LER-1981-013-02, Small Void in Concrete Found Immediately Below Equipment Hatch Barrel.Cause Not Stated.Similar Void Confirmed on Unit 4.Voids Repaired +
- 05000270/LER-1981-019-01, /01T-0:on 811124,const Personnel Severed 2-inch Line Which Branched Off Water Header Supplying CT-5 Transformer Fire Suppression Sys.Cause Under Investigation. Shutdown Commenced +
- 05000338/LER-1981-076-03, /03L-0:on 811117,two Valves on Train B Low Head Safety Injection Sys Found to Be Closed,Thereby Rendering Single ECCS Subsystem Inoperable.Caused by Operator Error. Valves Reopened +
- 05000327/LER-1981-142-03, /03L-0:on 811118,auxiliary Feedwater Pressure Control Valve 1-PCV-3-122 Would Not Operate During Stroke Time Test.Caused by Inoperative Servo Valve in Hydraulic Sys Due to Clogged Passages from Containment Hydraulic Fluid +
- 05000369/LER-1981-178-03, /03L-0:on 811113,UHI Surge Tank Hi/Lo Pressure Alarm Received,Indicating Upper Head Injection Sys Pressure Increased to Setpoint of 1206 Psig.Probably Caused by Packaging Leakoffs from Four Uhi Block Valves +
- 05000315/LER-1981-055-03, /03L-0:on 811117,inspector Identified safety- Related Fire Barrier Seal Penetrated by Electrical Conduit Rendering Seal Nonfunctional.Fire Watches Posted.Conduit & Sealing Requirements Are Being Evaluated +
- 05000338/LER-1981-076, Forwards LER 81-076/03L-0 +