Pages that link to "05000250/LER-1983-006, Forwards LER 83-006/01T-0"

The following pages link to 05000250/LER-1983-006, Forwards LER 83-006/01T-0:

Displaying 48 items.

• 05000250/LER-1983-001, Forwards LER 83-001/03L-0 (← links)
• ML20069L561 (redirect page) (← links)
• 05000250/LER-1983-006 (redirect page) (← links)
• 05000251/LER-1983-003, Forwards LER 83-003/01T-0 (← links)
• 05000251/LER-1983-001, Forwards LER 83-001/01T-0 (← links)
• 05000250/LER-1983-005, Forwards LER 83-005/01T-0 (← links)
• 05000250/LER-1983-003, Forwards LER 83-003/03L-0 (← links)
• 05000250/LER-1983-015-03, /03L-0:on 830911,during Full Power Operation, Critical Heat Tracing Circuit 20 Declared Inoperable.Caused by Short Circuit in Train a & Closed Circuit on Train B. Unit Brought to Hot Shutdown.Circuit Repaired (← links)
• 05000250/LER-1983-026-03, /03L-0:on 831215,util Advised by Const Personnel of Portable Air Compressor Rolling Down Containment Equipment Hatch Ramp & Striking Emergency Diesel Generator Fuel Oil Transfer Piping (← links)
• 05000250/LER-1983-025-03, /03L-0:on 831216,during Cold Shutdown,Spurious Safeguards Actuation Signal Received & Emergency Diesel Generator B Failed to Start.Caused by Diesel Air Pressure Regulator Malfunction.New Regulator Installed (← links)
• 05000251/LER-1983-015-03, /03L-0:on 830913,local Leak Rate Test on Containment Personnel Hatch Airlock Revealed Leakage in Excess of Tech Specs.Caused by Equalizing Vent Valve on Inner Door Not Fully Closed.Valve Tightened (← links)
• 05000250/LER-1983-023-03, /03L-0:on 831201,while Unit Shut Down,Discovered Spent Fuel Pit Exhaust Radiation Monitor Deenergized.Cause Undetermined.Sign Will Be Posted Identifying Breaker as Tech Spec Item (← links)
• 05000251/LER-1983-002-01, Hoisting Cable on Fuel Handling Crane of Spent Fuel Assembly X-13 Parted & Assembly X-13 Dropped Back Into Rack.Caused by Malfunction of Two Limit Switches.Switches Repaired (← links)
• 05000251/LER-1983-021-03, /03L-0:on 831207,while Adding Nitrogen to Accumulators,Accumulator 4B Relief Valve Lifted Prematurely at Setpoint Below Tech Spec Limit.Caused by Premature Lifting of Relief Valve 858B (← links)
• 05000251/LER-1983-020-03, /03L-0:on 831123,during Return to Operation After Addition of full-flow Recirculation Piping,Reactor Taken Critical Before Piping Hydrotested at Pump Discharge Pressure.Caused by Previous Outmoded Hydrotest (← links)
• 05000250/LER-1983-022-03, /03L-0:on 831002,during Scheduled Refueling Shutdown Operations,Motor Operated Valves 843A,843B & 869 Not Verified Closed W/Breakers Racked Out.Caused by Not Adhering to Procedures (← links)
• 05000251/LER-1983-019-03, /03L-0:on 831112,reactor Coolant Sample Taken for Isotopic Analysis of Iodine Did Not Meet Tech Spec Surveillance Frequency.Caused by Lab Technician Failure to Specify Time Frame.Personnel Instructed (← links)
• 05000250/LER-1983-021-03, /03L-0:on 831109,during Replacement,Three Auxiliary Feedwater Steam Supply Piping Check Valves Found to Be Schedule 40 Piping Instead of Schedule 80.Lines Meet Acceptance Criteria (← links)
• 05000250/LER-1983-020-03, /03L-0:on 831011,while Reviewing off-normal Procedure,Deficiency Identified Which Could Lead Operators to Incorrectly Align Seal Cooling Water to RHR & Containment Spray Pumps While Swapping Headers (← links)
• 05000250/LER-1983-019-03, /03L-0:on 831008,RHR Flow Isolated Due to Pressure Transmitter PT-3-405 Exposure to Hydrostatic Test Pressure of 3,100 Psig.Caused by Unclear Drawing Configuration of Loop a Sample Line.Transmitter Replaced (← links)
• 05000251/LER-1983-018-03, /03L-0:on 831011,while Performing Routine Surveillance Test of RHR Pump 4B,416-volt Leads to Motor Failed.Caused by Water in Motor Lead Connection Box.Source of Water Eliminated (← links)
• 05000250/LER-1983-016-03, /03L-0:on 831002,during Initiation of Cold Shutdown for Refueling,Letdown Isolation Valve CV-3-204 Failed to Close.Caused by Failed Solenoid Valve.Solenoid Valve Replaced (← links)
• 05000250/LER-1983-017-03, /03L-0:on 830926,personnel 830508 Failure to Take Grab Samples of Inoperable Prms (W/Indication of Secondary Activity) Discovered.Caused by Lab Personnel Error.Personnel Awareness Increased (← links)
• 05000251/LER-1983-016-01, /01T-0:on 831004,manual Discharge Valves on Containment Spray Pumps 4A & 4B Discovered Locked in Closed Position.Caused by Personnel Error.Valve for Pump 4B Opened (← links)
• 05000251/LER-1983-013-03, /03L-0:on 830825,while Performing Safeguards Test, Emergency Load Sequencer 4A Failed.Caused by Normal End of Life for open-circuited Timer 4A.Agastat Relay Replaced & Sequencer Tested & Returned to Svc (← links)
• 05000251/LER-1983-010-03, W/Unit in Shutdown,Steam Generator 4A Steam Supply Valve MOV-4-1403 to Auxiliary Feedwater Pump B Failed to Open in Response to Auto Start Signal.Caused by Carbon Buildup (← links)
• 05000251/LER-1983-006-03, /03L-0:on 830705,following Low Pressure Alarm, Accumulator 4B Pressure Found Below Tech Spec Limit.Caused by Partially Opened Valve HCV-4-936 & Leaking Ball Valve 937.Valve 937 Replaced (← links)
• 05000250/LER-1983-007-01, /01T-0:on 830419,manual Valves on Steam Supply Lines to Auxiliary Feedwater Pump Turbines B & C Discovered Closed.Caused by Personnel Error in Rechanging Tags.Valves Immediately Locked Open & Pumps Satisfactorily Tested (← links)
• 05000251/LER-1983-022-03, /03L-0:on 831219,routine Sample of Boric Acid Storage Tank Boron Concentration Revealed Three Tanks Exceeding Tech Spec Limits.Caused by Lack of Communication Between Chemistry & Operations Personnel (← links)
• 05000250/LER-1983-024-03, /03L-0:on 831208,while in Shutdown,Spent Fuel Pit Exhaust Radiation Monitor Observed Deenergized.Caused by Motor Control Ctr (MCC) C Being Deenergized While Mods Performed.Monitor Returned to Svc (← links)
• 05000250/LER-1983-014-03, /03L-0:on 830816,while Sampling Gas Contents from Vol Control Tank,Unplanned Release Occurred in Auxiliary Bldg & Atmosphere Via Plant Vent.Caused by Insufficient Instructions on Valve lineup.w/830915 Ltr (← links)
• 05000250/LER-1983-012-03, /03L-0:on 830804,auxiliary Feedwater Pump a Failed to Deliver Flow to Steam Generators.Caused by Failed Differential Pressure Transmitter.Transmitter Replaced (← links)
• 05000251/LER-1983-008-03, /03L-0:on 830806,automatic Turbine Runback to 70% Power Occurred When Rod Cluster N-9 in Shutdown Bank a Dropped.Caused by RCS Leakage from Upper Control Rod N9 Drive Mechanism Housing Vent Valve (← links)
• 05000251/LER-1983-009-03, /03L-0:on 830803,steam Generator 4A Blowdown Isolation Valve CV-4-6275A Failed to Close Upon Blowdown Isolation Signal.Caused by Instrument Air Isolation to Valve Actuator.Instrument Air Supply Restored (← links)
• 05000251/LER-1983-007-03, /03L-0:on 830803,during Routine Temp Reduction on Pressurizer Relief Tank Prior to Pumping,High Level Alarm Received Followed by Rupturing of Rupture Discs.Caused by Overpressurization.Ruptured Disc Replaced (← links)
• 05000250/LER-1983-011-03, /03L-0:on 830624,malfunction of Fire Ionization Detector 3-10 Caused Inside Containment Fire Detection Zone 3 to Be Disabled for Longer than 14 Days.Root Cause Unknown. Repairs to Be Performed During Next Outage (← links)
• 05000250/LER-1983-008-03, /03L-0:on 830614,conduit for Future Safety Parameter Display Sys Accidentally Damaged During Installation.One Containment Spray Pump Involved.Caused by Incorrect Drawing.Repairs Initiated (← links)
• 05000251/LER-1983-011-03, /03L-0:on 830809,both PORVs Out of Svc & Closed for Longer than 24 H W/Rcs Temp Less than 275 F.Caused by Lack of Coordination Between Maint & Operations Depts. RCS Drain Down Initiated (← links)
• 05000250/LER-1983-010-03, /03L-0:on 830711,monthly Update of Target Flux Difference,Operations Procedure 12304.6 Re Power Range Nuclear Instrumentation Calculation of Target Flux Difference,Not Performed (← links)
• 05000251/LER-1983-001-01, /01T-0:on 830331,during Refueling Shutdown,Field Discrepancies Identified in Platform Steel Inside Containment.Caused by Improper Installation of Bolts on Platform Framing Steel.Repairs Being Developed (← links)
• 05000250/LER-1983-009-03, /03L-0:on 830610,during Operability Test of Auxiliary Feedwater Pump A,Pump Failed to Come Up to Speed & No Flow Delivered.Caused by Failed Differential Pressure Transmitter.Transmitter Replaced (← links)
• 05000250/LER-1983-005-01, /01T-0:on 830309,rod Control Clusters D8 & M8 of Control Bank D Simultaneonsly Dropped While Unit Operated at 100% Power.Caused by Momentary Short in Lead to Stationary Coils Due to Water Inside Cabinet.Leakage Stopped (← links)
• 05000251/LER-1983-005-01, /01T-0:on 830601,mechanical Maint Supervisor Determined That safety-related Snubber Inoperable Due to Incomplete Mod to Attachment.Caused by Personnel Error & Procedure Deficiencies.Mod Completed (← links)
• 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 (← links)
• 05000250/LER-1983-002-03, /03L-0:on 830118,during Third & Fourth Quarters 1982,testing of Diesel Fuel Storage Tank Samples for Viscosity,Water & Sediment Levels Missed.Caused by Oversight.Sample Taken & Analyzed.Levels Acceptable (← links)
• 05000250/LER-1983-001-03, /03L-0:on 830107,insp of Leak Revealed Cracked Weld on Junction of 3C Charging Pump Discharge Line & Line Leading to Safety Relief Valve 3-283C.Cause Undetermined. Weld Repaired (← links)
• 05000250/LER-1983-013-03, /03L-0:on 830802,unplanned Gas Release Occurred from Vol Tank to Auxiliary Bldg & Atmosphere.Caused by Improper Valve Lineups.Vol Control Tank Isolated from Gas Analyzer (← links)
• 05000251/LER-1983-004-03, /03L-0:on 830526,valve MOV-4-1405 Failed to Open During Routine Test of Auxiliary Feedwater Pump B.Caused by High Resistance Across Contacts Inside Motor Operator. Contacts Cleaned & Valve Tested (← links)