Pages that link to "JPN-90-035, New York Power Authority Annual Rept for 1989"
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The following pages link to JPN-90-035, New York Power Authority Annual Rept for 1989:
Displayed 50 items.
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- 05000247/LER-1982-045, Corrected LER 82-045/01T-0:on 821108,insp Revealed That Upper End Plug from Fuel Rod within Assembly Separated from Fuel Tube.Cause Not Stated.Assembly Replaced (← links)
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- 05000286/LER-1989-007, :on 890321,unauthorized Access Into Protected Area by Former Employee Utilizing Photo Identification Badge of Another Contract Employee Occurred.Caused by Security Guard Error.Security Retrained (← links)
- 05000286/LER-1989-001, :on 890204,initiated Safety Injection Via High Steam Flow Safety Injection Logic.Caused by Uneven Refilling of Steam Flow Instrumentation Lines.Safety Injecton Terminated & Plant Cooldown Proceeded (← links)
- 05000286/LER-1987-009-01, :on 870903,determined That If 480 Volt Tie Breaker Racked Out & Cell Switch in Breaker Failed & Loss of Power Occurred,Associated Diesel Generator Would Not Receive Signal.Cause Not Stated.Cell Switches Replaced (← links)
- 05000286/LER-1986-012-01, :on 861114,reactor Trip Occurred Due to fail- Safe Design.Caused by Unintentional Opening of Dc Power Supply Breaker.Mod Designed to Provide Easier Access to Dc Power Panels & Prevent Recurrence (← links)
- 05000247/LER-1986-036, :on 861023,reactor Tripped Manually Following Automatic Trip of Main Boiler Feed Pump on High Discharge Pressure Due to Excess Flow.Caused by Problems W/Main Feedwater Discharge Valves (← links)
- 05000247/LER-1986-035, :on 861020,reactor Tripped When Reactor Trip Breaker B Opened.Caused by Loose Wires in Relay Racks.Relay Rack Terminals Checked for Loose Connections & Auxiliary Feedwater Sys Retested & Restored to Operation (← links)
- 05000247/LER-1986-034, :on 861016,F Function Signal to Overpower & Overtemp delta-T Trips Did Not Meet Test Acceptance Criteria.Caused by Three Defective Controllers.Two Controllers Repaired.Third Controller Replaced (← links)
- 05000247/LER-1986-033, :on 861015,480 Volt Emergency Diesel Generator Output Breakers 52 Eg 2A & 52 Eg 2B Failed to Close During Surveillance Check Causing Required Plant Shutdown.Cause Unknown.Breaker Racked Back to Svc & Tested (← links)
- 05000286/LER-1983-007-03, /03L-1:on 831205,surveillance Test 3PT-R38 Found 31 Seismic Snubbers Failing Operability Criteria.Caused by Degraded Seal Matl Due to Oil & Rust on Poppets.Snubber Rotation Policy Established (← links)
- 05000286/LER-1987-001-01, ,on 870131,reactor Trip & Turbine Trip Initiated by Low Steam Generator Water Level.Caused by Foreign Matter in Multiple Orifice & Check Valve Assembly in Main Boiler Feedwater Pump.Oil Sys Cleaned (← links)
- 05000247/LER-1987-002, :on 870130,MSIVs Ms 1-21 & Ms 1-24 Failed to Fully Close.Caused by Excess Friction of Valve Shaft.Msivs Closed W/Manual Assistance,Lubricated & Retested (← links)
- 05000247/LER-1986-023, :on 860630,surveillance Interval for Exercise Test Exceeded for Rod K-6.Caused by Personnel Error & Inoperable Rod Position Indicator.Operability Tested.Rod Position Indicator Will Be Repaired (← links)
- 05000247/LER-1986-038, :on 861113,safety Injection Pump 22 Failed to Operate Following Manual Start Signal.Caused by Accumulator Pump P Out of Svc for Maint.Pump Failure Analysis Will Be Performed.Pump Returned to Svc (← links)
- 05000247/LER-1986-012, :on 860325,discovered That Large Gas Decay Tank Releases Occurred Between 860303-17.Caused by Personnel Failure to Adhere to Procedure.Surveillance Test Revised to Withdraw Not Applicable Entry (← links)
- 05000247/LER-1986-015, :on 860521,excessive Leakage of Main Steam Safety Relief Valves Found.Caused by Damage to Valves During Secondary Plant Transient on 860501.Valves Refurbished (← links)
- 05000286/LER-1986-004-01, :on 860519,source-range (SR) high-flux Reactor Trip Initiated Automatically by Nuclear Instrumentation Sys. Caused by Operator Failure to Block SR Instrumentation During Startup.Operator Counseled (← links)
- 05000247/LER-1986-031, :on 860916,during Preparation for Biweekly Rod Exercise Test,Reactor Manually Tripped Following Drop of Three Control Rods.Caused by Inadequate Electrical Jumper. Jumper Replaced (← links)
- 05000286/LER-1986-011-01, :on 860909,reactor Tripped Automatically on Low Steam Generator Water Level.Caused by Water in Boiler Feedpump Control Oil Sys.Oil Sys Cleaned & Temporary Water Deflector Installed (← links)
- 05000247/LER-1986-005, :on 860207,wiring,limit & Torque Switches in Certain Motor Operators Not Addressed in Environ Qualification Documentation.Affected Wiring,Limit & Torque Switches Replaced During Outage (← links)
- 05000247/LER-1986-003, :on 860117,partial Failure of Planned Test of Safety Injection Sys Occurred.Caused by Wear on Relay Latching Mechanism Which Reduced Clearance Between Latch Screw & Latch Plate.Screw Clearance Adjusted (← links)
- 05000247/LER-1986-030, :on 860812,both Inner & Outer Air Lock Doors Momentarily Opened at Same Time,Resulting in Loss of Containment Integrity.Caused by Closing Mechanism Turning Too Quickly.Door Maint Scheduled (← links)
- 05000247/LER-1986-029, :on 860806,two Attempts Made to Close Diesel Generator Output Breaker W/O Success.Caused by Loose Pin or Springs Holding Breaker Stabs in Place.Breaker Refurbished, Tested & Returned to Svc (← links)
- 05000286/LER-1987-002, :on 870211,static Inverter Tripped Due to Overcurrent Condition.Caused by short-circuited Solenoid Valve.Failed Solenoid Valve Replaced & All Other Affected Sys Verified to Be Functioning Normally (← links)
- 05000247/LER-1987-004, :on 870210,reactor Turbine Trip Occurred Due to Trip of Reactor Protection Train B.Caused by Personnel Error.Malfunctioning Breaker Cell Switch Subsequently Repaired (← links)
- 05000247/LER-1986-039, :on 861217,control Rod (Rod) BO6 in Control Tank D Found Misaligned from Demand Position by 20 Steps for 16 H Prior to Discovery.Cause Unknown.Personnel Counseled on Maint of Monitor (← links)
- 05000247/LER-1986-020, :on 860624,two Reactor Protection Sys hi-hi Containment Pressure Instruments Inoperable.Caused by Static Inverter Trip & Failure of Alternate Feed to Energize. Breakers & Static Inverter Returned to Svc (← links)
- 05000247/LER-1986-021, :on 860625,reactor Tripped Following Independent Electrical Overspeed Protection Sys (Ieops) Turbine Trip.Caused by Deficient Procedures Re Replacement of Defective Relays.Drawings Will Be Reissued (← links)
- 05000286/LER-1986-007-01, :on 860527,during Surveillance Testing W/ Reactor in Hot Shutdown,Inadvertent Safety Injection Actuation Occurred.Caused by Technicians Activating High Steam Flow Portion of Safety Injection Logic (← links)
- 05000247/LER-1986-026, :on 860724,operation of Gaseous Effluent Monitoring Instrumentation Not in Accordance W/Tech Specs. Caused by Personnel Not Realizing That Inoperable Recorder Disabled Alarm Function.Operators Reinstructed (← links)
- 05000247/LER-1986-016, :on 860523,unplanned Actuation of Reactor Protection Sys Occurred.Caused by Personnel Error.Personnel Involved in Trip Reinstructed in Correct Performance of Procedure (← links)
- 05000286/LER-1986-005-01, :on 860523,turbine Trip Occurred During Monthly Surveillance Test 3PT-M12.Caused by Failed Relay in Turbine Independent Electrical Overspeed Protection Sys (Ieops). Relay Replaced & Similar Ieops Relays Tested (← links)
- 05000247/LER-1987-003, :on 870202,during Planned Shutdown,Condensate Storage Tank Isolation Valve LCV-1158 Failed to Close in Required Time.On 870203,motor Driven Auxiliary Feedwater Pumps Failed Flow Test (← links)
- 05000247/LER-1986-027, :on 860802,main Boiler Feed Pump 22 Tripped on Low Automatic Stop Oil Signal.Caused by Excessive Drain Off Through Worn Thrust Bearing to Thrust Seal.Oil Tubing Installed to Increase Oil Supply (← links)
- 05000247/LER-1986-025, :on 860718,while Plant in Hot Shutdown,Loss of Instrument Air to Auxiliary Feedwater Sys Experienced.Caused by Inadvertent Breaching of Instrument Air Line.Alternate Air Supply Lines Established (← links)
- 05000247/LER-1986-022, :on 860630,low Level Alarm Setpoints for Refueling Water Storage Tank Level Transmitters Discovered Outside Low Level Setpoint Margin Spec.Barton Model 288 Will Be Replaced W/Foxboro Model N-823DP (← links)
- 05000247/LER-1986-012, :on 860303,sampling Analysis & Verification of Plant Vent Gas Release Rate Calculations Not Performed. Caused by Lack of Adherence to Surveillance Test Procedures for R-14 Monitor.Procedures Reemphasized (← links)
- 05000247/LER-1986-010, :on 860320,inadequacy of Alarm Response Procedure Re Line Break in Piping Penetration Area Discovered.Caused by Procedure Not Meeting Commitments from 730409 Submittal.Procedure Revised (← links)
- 05000247/LER-1986-007, :on 860307,plant Heated Above 200 F Although Listed Transmitters Not Resealed,Per Environ Qualification Requirements.Caused by Not Recognizing Environ Status Should Have Been Restored.Procedures Reviewed (← links)
- 05000247/LER-1986-008, :on 860205,discovered That Setpoints on Three Degraded Bus Voltage Relays on 480-volt Buses Not within Tech Spec Range.Caused by Setpoint Drift Due to Vibration, Temp Change & Aging.Relays Reset & Tested (← links)
- 05000247/LER-1986-018, :on 860606,battery Cell Voltage Determined to Be Below Min Acceptable Value at 123.54 Volts Dc & Battery Declared Inoperable.Caused by Defective Transistor in Voltage Regulator.Transistor Replaced (← links)
- 05000247/LER-1986-017, :on 860528,safety Injection Actuation & Reactor Trip Occurred Due to Condenser Steam Dump Valves Opening. Caused by Erratic Steam Dump Controller PC-404 Output. Controller Recalibr (← links)
- 05000286/LER-1986-002-01, :on 860518,during Main Turbine Vibration Test, Reactor Tripped on Steam Flow/Feedwater Flow Mismatch Signal.Caused by Air Caught in Flow Transmitters Due to Insufficient Blowdown.Operators Counseled (← links)
- 05000286/LER-1985-004, :on 850320,during Plant Startup,Failure of Power Fuses for Nuclear Instrumentation intermediate-range Channel 36 Resulted in Three Reactor Trips.Caused by Intermittent Current Leak Across Test Switch (← links)
- 05000247/LER-1985-012, :on 850928,reactor Trip Occurred Due to Power Range High flux-low Level Trip Signal.Caused by Operator Failure to Block Trip Signal Although Permissive for Blocking Trip Existed.Condition Stabilized (← links)
- 05000247/LER-1985-017, :on 851231,reactor Tripped on Low Pressurizer Pressure Due to Rapid Decrease in Pressure.Caused by Failure of Spray Valve PCV455A to Close Completely.Valve Isolated (← links)
- 05000286/LER-1989-003-01, :on 890205,security Gate Found Unlocked.Caused by Cognitive Personnel Error.Upgrade of Security Procedure 4, Compensatory Measures to Clearly Define Methods of Establishing,Maintaining & Closing Posts Performed (← links)
- 05000286/LER-1989-013-01, :on 890702,contractor Security Guard Was Found Asleep at Duty Post.Caused by Cognitive Personnel Error. Contract Security Officer Involved in Event Was Dismissed. All Security Personnel Reapprised of Responsibilities (← links)
- 05000286/LER-1985-008-01, :on 851018,boric Acid Concentrations Outside Tech Spec Limits.Caused by Difficulties Encountered by Plant Operators When Performing Precipitation Checks.Boric Acid Check Added to Plant Operator Training Program (← links)
- 05000247/LER-1986-011, :on 860322,low Level Alarm Setpoints for Transmitters LIC-921 & LT-920 Found Set Below Low Level Spec.Determination of Cause Pending.Transmitters Recalibr. Public Health & Safety Unaffected (← links)
- 05000286/LER-1985-012-01, :on 851130,after Trip,Source Range Nuclear Instrumentation Channel 31 Failed to Reenergize When Reactor Neutron Flux Dropped Below Permissive Setpoint.Caused by Loose Wire Connection.Connection Repaired (← links)
- 05000286/LER-1985-010-01, :on 851129,unit Tripped Due to Inadvertent Main Boiler Feedpump Shutdown & Low Water Level in Steam Generator 34.Caused by Painter Inadvertently Actuating Trip Lever.Painters Reinstructed (← links)
- 05000247/LER-1986-009, :on 860315,LPSI Setpoint Found Out of Spec. Review of Cause Continuing.Instruments Calibr on 860315. Calibr Confirmed on 860319 (← links)
- 05000247/LER-1986-002, :on 860114,during Performance of Preoutage Test to Verify Steam Generator Safety Valve setpoints,3 of 20 Valves Found W/Setpoints Outside Specified Band.Caused by Setpoint Drift.Valves Adjusted & Retested (← links)
- 05000286/LER-1986-001-01, :on 860228,main Turbine Stop & Control Valves Closed & Reactor Tripped on Low Steam Generator Water Level. Caused by Mechanical Binding of Trip Blocking Relay LTB-1. Failed Relay Replaced W/Improved Model (← links)
- 05000286/LER-1985-006-01, :on 851004,turbine Trip & Subsequent Reactor Trip Initiated Automatically by High Water Level in Steam Generator 33.Caused by Malfunctioning Valve Positioner Linkage Assembly (← links)
- 05000247/LER-1985-009, :on 850920,short Circuit Between Phases of Main Transformer Caused Turbine Generator Trip.Caused by River Water Spray from Condenser Water Box Exhaust.Changes Made to Exhaust to Eliminate Spray (← links)
- 05000247/LER-1985-013, :on 851004,leakage Into Containment from All Sources Exceeded Tech Spec Limit of 10 Gpm for Combined Leakage.Source of Leakage Traced to Tube in Fan Cooler Unit Water Box.Tubing Replaced (← links)
- 05000247/LER-1986-004, :on 860131,during Safety Relief Valve Test, Setpoint Pressures of Valves Outside Range Permitted by Tech Specs.Caused by Combination of Erosion,Thermal Cycling & Setpoint Drift.Valve Maint Performed (← links)
- 05000247/LER-1985-015, :on 851024,two Boron Injection Tank Level Transmitters Found Out of Calibr During Surveillance Test. Caused by burn-in of Transmitters.Surveillance Test Frequency Increased (← links)
- 05000247/LER-1985-007, :on 850711,gap Identified Between Seismic Restraint & Collar Mounted on Vertical Pumps in Excess of Structural Drawing Specs.Caused by Relaxing of Horizontal Restraints to Correct Pump Misalignment (← links)
- 05000247/LER-1985-016, :on 851212,reactor Trip Occurred Due to Loss of Reactor Coolant Flow Signals from Reactor Coolant Loop 21. Caused by Failed Bistable in Instrument Channel Coincident W/Signal from Low Flow Instrument Channel (← links)
- 05000247/LER-1985-014, :on 851024,reactor Tripped Due to High Steam Generator Level.Caused by Operator Error,Including Inadequate Training & Operator inexperience.Long- & short-term Actions Planned (← links)
- 05000286/LER-1985-009-01, :on 851022,two 480-volt Bus Degraded Grid Voltage Timers Did Not Actuate within 45 as Required by Tech Specs.Caused by Instrument Drift.Timers Reset (← links)
- 05000286/LER-1985-011-01, :on 851130,turbine Trip & Subsequent Reactor Trip Initiated Automatically by High Water Level in Steam Generator 32.Caused by Feedwater Perturbations During Flow Transfer Maneuvers (← links)
- 05000286/LER-1985-007-01, :on 851015,main Turbine Generator Trip Initiated Automatically by Signal from Main Turbine High Pressure Control Oil Sys.Caused by Blockage of Control Oil Strainers & Orifices.Strainer Cleaned (← links)
- 05000247/LER-1985-008, :on 850821,daily Heat Balance Not Performed. Caused by Preoccupation W/Recovery from Transient Resulting from Rod Drop During Control Rod Insertion Test.Heat Balance Performed on 850822 (← links)
- 05000286/LER-1984-015, :on 841116,phase-to-phase Fault Across Station Auxiliary Transformer Buswork Caused Loss of Normal Offsite Power.Caused by Piece of Metal Blown Onto Buswork.Power Restored Through Alternate Offsite Source (← links)
- 05000247/LER-1985-006, :on 850416,loss of Main Boiler Feedwater Pump 22 Initiated Reactor Trip on lo-lo Level Signal from Steam Generator 24.Caused by Reduction in auto-stop Oil Pressure. Pump Oil Sys Overhauled (← links)
- 05000286/LER-1985-004-01, :on 850320,control Power Fuses for Nuclear Instrumentation Range Channel 36 Failed,Resulting in Three Reactor Trips.Caused by Current Leakage Across Test Switch. Testing Performed.Investigation Continuing (← links)
- 05000247/LER-1984-025, :on 841219,fire Occurred at Generator Exciter End Seal Due to Seal Failure & Hydrogen Leakage.Caused by Solidified Boric Acid Preventing Suction Flow & Gas Binding of Pumps.Flushing Procedures Modified (← links)
- 05000247/LER-1984-024, :on 841218,erroneous Weld Channel Pressurization Line Connection Discovered.Caused by Personnel Error.Contractor QC Procedures Enhanced to Prevent Further Occurences (← links)
- 05000247/LER-1984-023, :on 841207,discovered Auxiliary Feedwater Regulating Valves Might Not Permit Min Flow in Throttled Position.Valves Set to Limit Initial Flow to +50 Gpm Per Steam Generator (← links)
- 05000247/LER-1985-003, :on 850213,recombiners 21 & 22 Experienced Malfunctions of Oxygen Supply Flow Regulating Valve & Pressure Switch,Respectively.Caused by Filter Clogged W/Rust & Defective Pressure Switch (← links)
- 05000286/LER-1985-001-01, :on 850121,unit Trip & Safety Injection Actuation Occurred.Caused by Operators Switching Bus 31 to Backup Power Due to Low Voltage on Two Buses.Solenoid Coil Replaced & Surveillance Test Peformed (← links)
- 05000247/LER-1985-001, :on 850202 Reactor Manually Tripped.Caused by H Leak & Oil Mist from Main Generator Shaft Seals Due to Malfunction of Oil Filter in Seal Oil Supply Line.Filter Repaired Correcting H Leak (← links)
- 05000247/LER-1984-026, :on 841228,spurious Safety Injection Signal Occurred Due to High Steam Flow Signals.Caused by Nonlinearity of Errors.Transmitter Sensing Tubes Blown Down, Vented & Placed in Svc (← links)
- 05000247/LER-1984-022, :on 841127,valves PCV 1310A & B Failed to Stroke Due to Lack of Power to Solenoid Valves.Caused by Disconnection of & Failure to Reconnect Power Feeds to Solenoid Valves.Procedures Reviewed (← links)
- 05000286/LER-1984-015-01, :on 841116,several Breakers in Electrical Distribution Sys Failed to Operate During Station Blackout. Caused by Piece of Metal Blown Onto a & B Phase Buswork of Station Auxiliary Transformer by High Winds (← links)
- 05000247/LER-1984-021, :on 841002,during Surveillance Test of Svc Water Pumps,Back Leakage Across Check Valves on Discharge Side of Two Pumps Observed.Affected Check Valves Repaired & Tested Satisfactorily (← links)
- 05000247/LER-1984-020, :on 841026,air Flow Not Detected in Cable Tunnel During Surveillance Test Due to Closed Louvers in Fans.Caused by Melted Fusible Links.Fusible Links Replaced (← links)
- 05000247/LER-1985-004, :on 850306,reactor Trip Occurred.Caused by Improperly Functioning Feedwater Regulating Valve.Relays in Instrumentation Sys for Feedwater Regulating Valves Replaced (← links)
- 05000247/LER-1984-016, :on 841016,during Rod Withdrawal at Conclusion of Maint Refueling Outage,Steam Generator Delta P Signal Tripped Reactor.Caused by Lifting of Safety Relief Valve on Secondary Side (← links)
- 05000247/LER-1984-018, :on 841020,reactor Trip Occurred as Result of Steam Generator Low Level & Steam Flow/Feedwater Flow Mismatch Signal.Caused by Operator Not Adequately Responding to Plant Conditions.Operator Counseled (← links)
- 05000247/LER-1984-019, :on 841022,fire Occurred in Insulation of High Pressure Turbine.Caused by Oil Leak Through Insp Cover.Fire Extinguished & Leak Repaired (← links)
- 05000247/LER-1984-015, :on 841008,spurious Safety Injection Signal Occurred Due to Momentary Loss of Vital Instrument Bus. Caused by Defective Procedure & Operator Error.Operating Condition Restored.Procedure Revised (← links)
- 05000286/LER-1984-013-01, :on 840822,turbine Generator & Reactor Trips Initiated Automatically on High Level in Steam Generator 32. Caused by Feedwater Sys Transient Due to Leak in Control Oil Sys.Leak Repaired (← links)
- 05000247/LER-1984-011, :on 840813,at Cold Shutdown,Two Component Cooling Water Pumps & Standby Pump Tripped on Overcurrent Protection Signal.Caused by Wetting of Pump Motors.Pumps Returned to Svc (← links)
- 05000247/LER-1984-009, :on 840719,two of Four 6.9 Kv Bus Relays Failed to Deenergize at Undervoltage Reactor Trip Setpoint.Caused by Excessive Mechanical Friction.Target Mechanism Repositioned & Relays Adjusted (← links)
- 05000247/LER-1984-010, :on 840723,svc Water Sys Containment Isolation Valve Exceeded Tech Spec Leakage Limits.Caused by Loose Seating of Torque Setting on Limitorque Operator.Seating Adjusted (← links)
- 05000247/LER-1984-007, :on 840711,during Continuous Fire Watch, Personnel Failed to Watch Cable Spreading Room for 4 H. Personnel Reinstructed (← links)
- 05000247/LER-1984-013, :on 840920,23 Fire Dampers Identified as Potentially Deficient.Cause Not Stated.Program for Replacing Fire Dampers Initiated (← links)
- 05000286/LER-1984-011-01, :on 840712,turbine Generator Trip & Subsequent Reactor Trip Initiated Automatically Due to Failure of Insulator on 345-kV Feeder.Caused by Deposits on Insulator. Insulator Replaced (← links)
- 05000286/LER-1984-010-01, :on 840710,during Evaluation,Util Recognized That Postulated Loss of Station Battery 32,w/concurrent Loca,May Prevent Automatic Starting of Some Safeguards Equipment.Also Reported Per Part 21 (← links)
- 05000286/LER-1984-008-01, :on 840529,reactor Tripped When Closure of Loop 33 MSIV Resulted in Turbine Trip.Caused by Inadvertent Opening of Instrument Air Trip Solenoid Vent Valve Due to Latch Pin Rotation.Valve Reset (← links)
- 05000247/LER-1984-005, :on 840602,during Refueling Outage,Msivs MS-1-21 & MS-1-24 Failed to Close within 5 S,Per Tech Specs. Caused by Packing Friction Resulting from Shaft Lubricant Loss.Valves Will Be Overhauled (← links)
- 05000247/LER-1984-006, :on 840611,during Surveillance of Isolation Valve Seal Water Sys,Overall Sys Leakage in Excess of Acceptance Criteria.Caused by Leakage Through Isolation Valves for Auxiliary Steam Supply Line (← links)
- 05000286/LER-1984-009-01, :on 840616,reactor Trip Initiated on Low Level in Steam Generator 33.Caused by Main Feedwater Regulating Valve Inadvertent Closure,Due to Failure of Valve Operator Yoke (← links)
- 05000247/LER-1984-003, :on 840205,unit Brought to Hot Shutdown Due to RPI Channel Drift.Caused by Uncalibr analog-signal Due to Movement in Voltage Adjustment Potentiometer on RPI Power Supply Sola Transformer (← links)
- 05000286/LER-1984-006-01, :on 840309,during Monthly Reactor Protection Sys Testing,Turbine Tripped.Caused by Inadvertent Closure of Cell Switch Associated W/Reactor Trip Bypass Breaker 52/BYB.Catch Realigned (← links)
- 05000247/LER-1984-001, :on 840104,low Pressure Alarm on Weld Channel & Containment Penetration Pressurization Sys Sounded in Central Control Room.Caused by Leakage Past One or Both Containment Purge Exhaust Valves (← links)
- 05000286/LER-1984-002-01, :on 840128,w/reactor Critical at Zero Power, Trip Initiated by Intermediate Range Nuclear Instrumentation.Caused by Blown Power Supply Fuse for Channel 32.Fuse Replaced (← links)
- 05000247/LER-1984-002, :on 840105,two of Four MSIVs Did Not Fully Close within 5 Tech Spec Requirement.Caused by Dried Out Valve Shaft Lubrication.Shaft & Packing Lubricated (← links)
- 05000247/LER-1983-042-03, /03L-0:on 831123,during Normal Operation,Electric Heat Trace Circuit 46B Found to Have Inoperable Primary Unit.Primary Heating Element Found to Have Open Circuit. Heating Element Replaced (← links)
- 05000247/LER-1983-048-03, /03L-0:on 831220,during Surveillance Test PTM-46, Normal Supply Breaker to 480-volt Bus 2A Opened,Causing Rod Drop Trubine Runback.Caused by Inadvertent Operation of Normal Supply Breaker.Power Restored (← links)
- 05000247/LER-1983-036-01, /01T-0:on 831013,during Cold Shutdown,Westinghouse Reported That Vendor Procured Barton Pressure Transmitters W/Previously Undefined Errors at Both Abnormal & Accident Temp Conditions (← links)
- 05000247/LER-1950-247-01, /01L:on 750829,during Normal Operation,Two Charging Pumps Became Inoperable.Caused by Excessive Seal Leakage.Design Mods investigated.W/750926 Forwarding Ltr (← links)
- 05000247/LER-1982-038-03, /03L-0:on 820901,during Normal Operation,Reactor Containment Fan Cooler Unit 24 Discovered Not Operating Properly.Caused by Loose Outboard Fan Bearing Resulting in Coupling Failure.Coupling Replaced (← links)
- 05000247/LER-1982-049-99, /99X-0:on 821218,during Cycle 5/6 Refueling Outage,Ability of Central Control Room to Be Totally Isolated During Accidents Questioned Because Potential Air Leak Paths Identified.All Potential Paths Sealed (← links)
- 05000247/LER-1983-041-03, /03L-0:on 831029,following Maint Outage,Reactor Coolant Chemical Analysis Indicated Chloride Concentration of 200 Ppb.Caused by Unflushed Anion Demineralizer Placed in Svc.Chloride Concentration Restored (← links)
- 05000247/LER-1983-037-03, /03L-0:on 831011,w/plant Cooled Down During Maint outage,1/2-inch Nipple Failed on Impulse Line Associated W/Auxiliary Boiler Feedpump 23 Flow Transmitter.Cause Unknown.Investigation Underway (← links)
- 05000247/LER-1983-039-99, /99X-0:on 831017,while in Cold Shutdown,Pin Hole Leak Identified in Supply Line to Water Box 21-2.Caused by Internal Corrosion.Pipe Weld Repaired & Fan Cooler Satisfactorily Retested (← links)
- 05000286/LER-1983-006-01, /01T-0:on 831017,established Steel Plates Holding Svc Water Pump 31,32 & 36 Seismic Restraint Collars Not in Place.Caused by Plates Not Replaced After Maint.Missing Pieces Will Be Replaced (← links)
- 05000247/LER-1983-034-03, /03L-0:on 830916,containment Gas & Particulate Monitors R-11 & R-12 Declared Inoperable When Monitors Read Downscale.Cause Not Stated.Connector Repaired & Minor Adjustments Made (← links)
- 05000286/LER-1984-003-01, :on 840128,automatic Safety Injection Signal Actuated on High Differential Steam Line Pressure.Caused by Code Safety Valve MS-45 on Main Header 34 Lifting Momentarily.Valve Reset (← links)
- 05000286/LER-1984-001-01, :on 840125,w/reactor in Hot Shutdown,Code Safety Valve MS-45 on Main Steam Header 34 Opened Momentarily.Caused by High Differential Pressure Lifting Valve.Valve Reset & Tested (← links)
- 05000286/LER-1984-004-01, :on 840209,reactor Trip Actuated on Steam Flow/Feed Flow Mismatch for Steam Generator 32.Caused by Loss of Both Heater Drain Pumps.Associated Instrument Air Lines Blown Down Removing Condensation (← links)
- 05000247/LER-1983-046-03, /03L-0:on 831217,during Normal Operation,Loop 1 T Average Spiked High,Causing Reduction in Overpower,Resulting in Turbine Run Back.Caused by Defective Voltage to Current Converter.Equipment Repaired (← links)
- 05000247/LER-1983-049-03, /03L-0:on 831221,during Surveillance Test PTM-12, Steam Generator 24 High Steam Flow Safety Injection Bistable Fc 449B Setpoint Found High.Caused by Setpoint Drift. Setpoint Readjusted (← links)
- 05000247/LER-1983-032-03, /03L-0:on 830806,pinhole Leak Discovered on 3/4- Inch Safety Injection Pump Test Pipe to Relief Valve 855. Cause Unknown.Leak Will Be Inspected During Biweekly Containment Insps.Correction Will Be Reported (← links)
- 05000286/LER-1983-007-03, /03-0:on 831205,several Seismic Snubbers Did Not Meet Acceptability Criteria During Surveillance Test 3PT-R38.Cause Unknown.Defective Bergen-Paterson Snubbers to Be Repaired or Replaced (← links)
- 05000247/LER-1983-047-03, /03L-0:on 831219,during Normal Operation,Solenoid Operated Valve (SOV 1280) Did Not Isolate During Containment Relief Testing.Cause Not Stated.Solenoid Valve Coil Replaced & SOV Tested & Returned to Svc (← links)
- 05000247/LER-1983-045-03, /03L-0:on 831208,rush of Air Did Not Cease After Personnel Entered Vapor Containment,Indicating Inner Door Seal Not Fully Seated.Mechanical Interlock Examined.No Malfunction Indicated (← links)
- 05000247/LER-1983-008-03, /03L-0:on 830328,electric Heat Trace Circuit 51B Found W/Inoperable Primary Circuit.Caused by Primary Heating Element to Be Open Circuit.Element Replaced. Circuit Tested & Returned to Svc (← links)
- 05000247/LER-1983-001-03, /03L-0:on 830108,MSIV MS-1-22 for Steam Generator 22 Failed to Close During Valve Closure Testing.Caused by Jamming of Valve Disc Against Vertical Wall of Valve Disc Stop.Vertical Wall Ground to Increase Clearance (← links)
- 05000247/LER-1983-033-03, /03L-0:on 830828,while in Hot Shutdown,Msiv for Loop 21 Failed to Completely Close During Isolation of Secondary Plant for Maint.Caused by Insufficient Lubrication of Valve Stem Packing.Stem Packing Lubricated (← links)
- 05000247/LER-1983-026-03, /03L-0:on 830706,charcoal Compartment Outlet Valve FCV-22-4 on Reactor Containment Fan cooler-filter Unit 22 Failed to Open When Tested.Caused by Incorrect Installation of Pneumatic Circuitry for Outlet Valve (← links)
- 05000247/LER-1983-025-03, Flow Control Valve 406A on Auxiliary Feedwater Pump 21 Discharge Line to Steam Generator 21 Did Not Open During Surveillance Test.Caused by Chipped Valve Cage.Cage & Gaskets Replaced (← links)
- 05000247/LER-1983-030-03, /03L-0:on 830727,during Full Power Operation, Hourly Fire Watch Not Performed for 1 H.Caused by Security Lieutenant Ordering Guard to Fixed Post,Interrupting Patrol. Patrol Resumed (← links)
- 05000247/LER-1983-022-03, /03L-0:on 830510,valve 850A in Safety Injection Pump Discharge Header Could Not Be Fully Closed.Cause Unknown.Valve Closed by Hand to Clear Seat of Solidified Boric Acid (← links)
- 05000247/LER-1983-028-03, /03L-0:on 830716,during Normal Operation,One of Three Required Boron Injection Tank Level Channels Became Inoperable.Caused by Erroneous Level Indication Due to Solidification of Boric Acid on Impulse Line (← links)
- 05000286/LER-1983-001-03, /03L-0:on 830422,during Processing of Water from Chemical & Vol Control Sys Holdup Tank 33 to Waste Sys,Partial Deformation of Tank Occurred Due to Low Pressure.Caused by Vacuum Due to Closed Vent (← links)
- 05000247/LER-1983-009-03, /03L-0:on 830331,when Operator Attempted to Start Safety Injection Pump 23 During steady-state Operation,Pump Motor Breaker Failed to Close.Caused by Seized Closing Solenoid.Breaker Replaced (← links)
- 05000247/LER-1983-007-03, /03L-0:on 830322,svc Water Pump 26 Removed from Svc Due to Inoperable Strainer.Caused by Sheared Key Connecting Drive Motor to Filter Shaft Due to Excessive Debris Accumulation within Strainer Basket.Basket Cleaned (← links)
- 05000247/LER-1983-005-03, /03L-0:on 830308,while Bringing Auxiliary Feedwater Pump Up to Operating Speed for Bimonthly Surveillance Testing,Outboard Bearing Started to Smoke. Caused by Pump Bearing Needing Repacking.Pump Repacked (← links)
- 05000286/LER-1983-003-03, /03L-0:on 830531,while in Hot Shutdown,Leak Observed at elbow-to-pipe Weld on Charging Pump 31 Relief Line.Leak Located on Line 210 Downstream of Relief Valve RV231.Caused by Vibration (← links)
- 05000247/LER-1983-023-03, /03L-0:on 830517,during Normal Operation,Motor Operator Would Not Close Valve 205 in Charging Line to Rcs. Cause Unknown.Motor Tested W/Valve Linkage Disconnected. Closing Torque Switch Adjusted (← links)
- 05000286/LER-1982-004-01, /01T-0:on 820713,setpoints for Crosby Model Hb Pressurizer Safety Relief Valves PCV-466 & PCV-468 Discovered Below Tech Spec Limit During Cold Testing.Caused by Mechanical Valve Drift.Valves Reset (← links)
- 05000247/LER-1982-027-03, /03L-0:on 820621,during Normal Operation,Boron Injection Tank Level Indicator Read Low.Caused by Solidification of Boric Acid in Instrument Pulse Line. Line Cleared & Instrument Returned to Normal Operation (← links)
- 05000247/LER-1982-047-03, /03L-0:on 821104,during Refueling/Maint Outage, Pressurizer Safety Valves Discovered Outside Tolerance. Cause Not Stated.Valves Refurbished,Readjusted & Tested (← links)
- 05000247/LER-1982-048-03, /03L-0:on 821105,air Flow Through Reactor Containment Fan Cooler Unit 24 Charcoal Filter Found 7% Less than Required by Tech Specs.Cause Under Investigation.Fresh Charcoal Placed in Trays & Sys Retested (← links)
- 05000247/LER-1982-046-03, /03L-0:on 821030,during Transfer of Blended make- up,15 Gallon Spill Occurred Through Valve N336.Caused by Defective Diaphragm on Closed Valve 370.Valve Bonnet for Valve 336 & Bonnet & Diaphragm for Valve 370 Replaced (← links)
- 05000247/LER-1982-044-03, /03L-0:on 821029,three of First 10 Snubbers Tested Did Not Meet Acceptance Criteria for lock-up Rate & Bleed. Cause Will Be Submitted Following Test Completion.Defective Snubbers Replaced (← links)
- 05000247/LER-1983-006-03, /03L-0:on 830316,reactor Cavity Continuous Sump Level Monitor Indicated 3 Ft Above Normal & Declared Inoperable.Caused by Drifted Output from Level Transmitter Lt 3302 in Conservative Direction.Transmitter Recalibr (← links)
- 05000247/LER-1983-003-01, /01T-0:on 830213,RCS Leakage Exceeded Tech Spec Levels.Caused by Failed Valve Gland Packing.Valve Repacked & Satisfactorily Tested (← links)
- 05000247/LER-1982-045-01, /01T-0:on 821108,upper End Plug from One Fuel Rod within Assembly F-44 Separated from Fuel Tube.Cause Pending Investigation.Affected Fuel Assembly Will Be Replaced (← links)
- 05000247/LER-1982-043-03, /03L-0:on 821005,tank Deformed Due to Low Pressure During Purification of Evaporator Feed Ion Exchangers.Caused by Valve Lineup Error.Deformation Removed by Applying Internal Pressure.Personnel Reinstructed Re Valve Lineup (← links)
- 05000247/LER-1982-042-03, /03L-0:on 820923,one of Two Level Alarm Setpoints Found Above Max Level Per Tech Specs.Caused by Level Alarm Bistable Setpoint Drift.Setpoint Reset to Required Value. Surveillance Frequency Increased (← links)
- 05000247/LER-1982-041-03, /03L-0:on 820919,operator Observed Excessive Containment Weld Channel/Penetration Pressurization Air Flow.Valve SOV 1279 Found Leaking to Atmosphere.Valve Will Be Replaced During Current Refueling Outage (← links)
- 05000247/LER-1982-036-03, /03L-0:on 820825,temporary Change Procedure Authorized to Permit Simultaneous Operation Under Load of Two Diesel Generators During Surveillance Test,Potentially Reducing Degree of Redundancy.Test Procedure PTM-21 Changed (← links)
- 05000247/LER-1982-032-01, /01T-0:on 820817,blowdown Outer Isolation Valve PCV 1215A Failed Closed Due to Failure of Solenoid Valve SOV 1315A.Caused by Open Circuit in Pilot Solenoid Valve SOV 1315A Coil.Coil Replaced (← links)
- 05000247/LER-1982-031-99, /99X-0:on 820811,svc Water Leak in Containment Indicated by Increases in Containment Sump Collection Rate & Sodium Chloride Concentration.Caused by Under Deposit Corrosion Resulting in Pinhole Leaks (← links)
- 05000247/LER-1982-050-03, /03L-0:on 821231,during Startup Following Cycle 5/ 6 Refueling Outage,Amount of Water in Condensate Storage Tank Reduced Below Tech Specs.Caused by Efforts to Minimize Chloride Concentration Into Steam Generators (← links)
- 05000247/LER-1982-034-03, /03L-0:on 820828,during Normal Operation,Charging Pump 22 Developed Leak & Was Declared Inoperable.Caused by Defective Gasket on Cylinder Head 4.Gasket Replaced & Pump Returned to Svc (← links)
- 05000247/LER-1982-025-03, /03L-0:on 820530,steam Generator 21 Level Indicators Drifted Upscale.Caused by Foxboro Co Transmitter 417C Failure.Bistables Associated W/Reactor Protection Sys Placed in Trip Condition (← links)
- 05000247/LER-1982-019-03, /03L-0:on 820517,auxiliary Boiler Feed Pump 23 Failed.Caused by Damaged Thrust Bearing Due to Equalizing Line Check Valve Hanging Up,Negating Positioning Control of Balancing Drum.Bearing Replaced & Check Valves Removed (← links)
- 05000247/LER-1982-018-03, /03L-0:on 820517,loss of Feed to Two Weld Channel Valves & Two Sample Valves Experienced.Caused by Blown Fuse Due to Failed SOV 1534 Coil.Fuse Replaced.Grease Removed from Vent Port & Coil Replaced on SOV 1534 (← links)
- 05000247/LER-1982-030-03, /03L-0:on 820710,during Normal Operation,Bypass Valve 267A in Chemical & Vol Control Sys Found Leaking. Caused by Damaged Diaphragm.New Valve Bonnet Assembly & Diaphragm Installed (← links)
- 05000247/LER-1982-029-03, /03L-0:on 820702,containment Isolation Valve in Primary make-up Water Sys Would Not Fully Close When Tested. Valve Will Be Secured in Closed Position Until Repaired. Cause & Corrective Actions Will Be Reported After Repair (← links)
- 05000247/LER-1982-026-03, /03L-0:on 820618,during Normal Operation Essential Svc Water Sys Being Supplied by Svc Water Pumps 21,22 & 23 Declared Inoperable.Caused by Low Pump Head Values.Pumps Repaired,Replaced & Tested (← links)
- 05000247/LER-1982-017-01, /01T-0:on 820505,motors for Central Control Room Air Conditioning Sys Booster Fans Failed.Caused by Previous Operation of 3-phase Motors in Single Phase Mode.Motors Replaced (← links)
- 05000247/LER-1982-014-03, /03L-0:on 820320,valve 267A Found Leaking.Two Boric Acid Transfer Pumps & Boric Acid Storage Sys Isolated in Order to Isolate Valve for Repairs.Caused by Diaphragm Failure.Valve Repaired (← links)
- 05000247/LER-1982-010-01, /01T-0:on 820310,determined That Existing Operating Procedures Required Necessary Safeguards Equipment to Be Operable Prior to Bringing Reactor Critical But Did Not Establish Specific Requirements in Hot Shutdown (← links)
- 05000247/LER-1982-013-03, /03L-0:on 820221,during Normal Operational Testing,Number 23 Svc Water Pump Indicated Vibration of 4.6 Mils.Caused by High Vibration in Pump Gland Seal Area. Packing & Latern Ring Removed,Inspected & Pump Repacked (← links)
- 05000247/LER-1982-007-03, /03L-0:on 820217,during Visual Insp of Number 21 Battery Cell,Number 31 Cell Found Leaking & Exhibiting Low Electrolyte Level.Caused by Cell Casing Crack Due to Expansion of Positive Plates.Cell Replaced (← links)
- 05000247/LER-1982-009-03, /01T-0:on 820305,during Power Operation,Nitrogen Pressure Reduction Required Corrective Measures to Prevent Operation in Manner Less Conservative than Assumed in Fsar. Caused by Malfunction of Nitrogen Regulator Valves (← links)
- JPN-90-035, New York Power Authority Annual Rept for 1989 (← links)
- 05000247/LER-1982-006-03, /03L-0:on 820207,power Range Nuclear Instrumentation Channel N 43 Indicated High & Then Became Erratic.Cause Not Given.Channel Returned to Normal During Operation.Instrumentation to Be Closely Monitored (← links)
- 05000247/LER-1982-004-03, /03L-0:on 820125,charging Pump 22 Declared Inoperable Due to Excessive Plunger Seal Leakage.Caused by Normal Wear.Seal Packing Replaced (← links)
- 05000247/LER-1981-004-03, During Surveillance Test PT-R35 Opening Time for One of Two Power Operated Relief Valves (PCV-456) Was 2.5-s Longer than Permitted.Caused by Nitrogen Supply Valve Inadvertently Closed.Valve Reopened (← links)
- 05000247/LER-1982-003-03, /03L-0:on 820119,containment Fan Cooler Condensate Flow Monitoring Sys Failed to Operate.Caused by Dry Air Pump,Model 6 Sfcw for Process Radiation Monitors R-11 & 12. Pump Replaced & Returned to Svc (← links)
- 05000247/LER-1982-002-03, /03L-0:on 820110,during Full Power Operation,Weld Channel & Penetration Pressurization Sys Air Consumption Exceeded Tech Spec Limits.Caused by Excessive Seat Leakage in Fischer Valve 1192.Valve Removed & Seat Replaced (← links)
- 05000247/LER-1981-032-03, /03L-0:on 811222,during Testing,Containment Isolation Valve 1723 Found Binding in Midstroke Position. Caused by Binding of Mechanical Linkage Between Grinnell Diaphragm Valve.Linkage Lubricated (← links)
- 05000247/LER-1981-033-03, /03L-0:on 811217,containment Air Lock Type B Test PT-SA 10 Was Performed 7 Days Late.Cause Not Stated. Followup Sys Revised to Preclude Recurrence (← links)
- 05000247/LER-1981-028-03, /03L-0:on 811120,pressurizer Safety Valve PCV-464 Found to Actuate Approx 4% Below Tech Spec Min.Cause Unknown.Valve Readjusted & Retested (← links)
- 05000247/LER-1981-030-99, /99X-0:on 811111,seal Return Flow from RCP Increased to Greater than 5 Gpm.Caused by anti-rotation Pin Failure or Seal Failure.New Seals & Pin of Modified Design Installed (← links)
- 05000286/LER-1981-010-01, /01T-0:on 811208,leak of Approx 1 Pint Per Minute Identified in Fan Cooler Unit 34.Caused by Leak in Tube of Cooling Coils for Motor Cooler.Tube Repaired (← links)
- 05000247/LER-1981-027-03, /03L-0:on 811110,primary Heat Trace Circuit for Balance Leakoff Line of Safety Injection Pump 23 Failed. Caused by Burned & Broken Connection at Chromalox Strip Heater Element for Thrust Balance Line (← links)
- 05000286/LER-1981-009-03, /03L-0:on 811110,battery Charger 31 Tripped.Cause Not specified.Delta-P Air Flow Sensing Switch Replaced (← links)
- 05000247/LER-1981-026-03, /03L-0:on 811029,reduction Observed in Delta & Average Temp on Loop 23.Caused by Defect in Hot Leg Model 176JA Resistance Temp Detector Circuit.Resistance Temp Element Replaced (← links)
- 05000247/LER-1981-024-03, /03L-0:on 811014,snubber 70-SR-13 on Pressurizer Relief Line & Bergen Patterson Hydraulic Snubber Hssa 3 Shaft Found Broken.Caused by Transverse Impact Load on Snubber Piston Rod.Snubber Replaced & Rod Analyzed (← links)
- 05000247/LER-1981-023-03, /03L-0:on 811014,perturbation in Secondary Blowdown Piping Associated W/Steam Generator 21 Resulted in Failure of Bolts Between Strut Assembly & Base of Snubber 46-SR-3.Cause Due to Water Hammer.Bolts & Snubber Replaced (← links)
- 05000286/LER-1981-005-03, /03L-1:on 810305,snubber RC-R-70-8-H Was Declared Inoperable Because of Oil Leak.Caused by Failure of O-ring in Main Cylinder Flange & Scoring on Extension & Compression Poppets.Snubber Repaired,Rebuilt & Tested (← links)
- 05000286/LER-1981-003-03, /03L-1:on 810223,during Seismic Restraint Test, Snubber RC-R-344-5-H Failed to Lock Up in Extension Position.Caused by Excessively High Bleed Rate W/Result That Lockup Was Unobservable.Snubber Rebuilt & Tested (← links)
- 05000286/LER-1981-007-01, /01T-0:on 810928,following Hydrostatic Testing of Rcs,Leakage of Coolant Observed in Steam Generator 31.Cause Not Specified.Unit in Cold Shutdown.Eddy Current Insp of Steam Generators Underway (← links)
- 05000247/LER-1981-019-03, /03L-0:on 810810,safety Injection Pump 23 Tripped After Flash & Smoke Observed in Pump Motor.Caused by Two Rotor Bars Lifting,Making Contact W/Stator Windings & Rubbing Through Insulation.Motor Replaced (← links)
- 05000286/LER-1979-006, Has Been Voided (← links)
- 05000286/LER-1979-009, Has Been Voided (← links)
- 05000286/LER-1979-008, Has Been Voided (← links)
- ML20042C509 (← links)
- ML20042C503 (← links)
- ML20042A664 (← links)
- ML20042A568 (← links)
- ML20063B651 (← links)
- ML20058K412 (← links)
- ML20071A467 (← links)
- ML20071A447 (← links)
- ML20071A431 (← links)
- ML20070C177 (← links)
- ML20069F076 (← links)
- ML20069B326 (← links)
- ML20084B117 (← links)
- ML20084A411 (← links)
- ML20084A381 (← links)
- ML20084A252 (← links)
- ML20083R687 (← links)
- ML20083L101 (← links)
- ML20079Q377 (← links)
- ML20079N316 (← links)
- ML20079M327 (← links)
- ML20077A248 (← links)
- ML20076G303 (← links)
- ML20073E794 (← links)
- ML20101D905 (← links)
- ML20095D659 (← links)
- ML20094E007 (← links)
- ML20141J186 (← links)
- ML20128D491 (← links)
- ML20151R442 (← links)
- ML20062C939 (← links)
- ML20050Y800 (← links)
- JPN-90-035 (redirect page) (← links)
- 05000247/LER-1982-006-03, /03L-0:on 820207,power Range Nuclear Instrumentation Channel N 43 Indicated High & Then Became Erratic.Cause Not Given.Channel Returned to Normal During Operation.Instrumentation to Be Closely Monitored (← links)
- 05000247/LER-1982-004-03, /03L-0:on 820125,charging Pump 22 Declared Inoperable Due to Excessive Plunger Seal Leakage.Caused by Normal Wear.Seal Packing Replaced (← links)
- 05000247/LER-1981-004-03, During Surveillance Test PT-R35 Opening Time for One of Two Power Operated Relief Valves (PCV-456) Was 2.5-s Longer than Permitted.Caused by Nitrogen Supply Valve Inadvertently Closed.Valve Reopened (← links)
- 05000247/LER-1982-003-03, /03L-0:on 820119,containment Fan Cooler Condensate Flow Monitoring Sys Failed to Operate.Caused by Dry Air Pump,Model 6 Sfcw for Process Radiation Monitors R-11 & 12. Pump Replaced & Returned to Svc (← links)
- 05000247/LER-1982-002-03, /03L-0:on 820110,during Full Power Operation,Weld Channel & Penetration Pressurization Sys Air Consumption Exceeded Tech Spec Limits.Caused by Excessive Seat Leakage in Fischer Valve 1192.Valve Removed & Seat Replaced (← links)
- 05000247/LER-1981-032-03, /03L-0:on 811222,during Testing,Containment Isolation Valve 1723 Found Binding in Midstroke Position. Caused by Binding of Mechanical Linkage Between Grinnell Diaphragm Valve.Linkage Lubricated (← links)
- 05000247/LER-1981-033-03, /03L-0:on 811217,containment Air Lock Type B Test PT-SA 10 Was Performed 7 Days Late.Cause Not Stated. Followup Sys Revised to Preclude Recurrence (← links)
- 05000247/LER-1981-028-03, /03L-0:on 811120,pressurizer Safety Valve PCV-464 Found to Actuate Approx 4% Below Tech Spec Min.Cause Unknown.Valve Readjusted & Retested (← links)
- 05000247/LER-1981-030-99, /99X-0:on 811111,seal Return Flow from RCP Increased to Greater than 5 Gpm.Caused by anti-rotation Pin Failure or Seal Failure.New Seals & Pin of Modified Design Installed (← links)
- 05000286/LER-1981-010-01, /01T-0:on 811208,leak of Approx 1 Pint Per Minute Identified in Fan Cooler Unit 34.Caused by Leak in Tube of Cooling Coils for Motor Cooler.Tube Repaired (← links)
- 05000247/LER-1981-027-03, /03L-0:on 811110,primary Heat Trace Circuit for Balance Leakoff Line of Safety Injection Pump 23 Failed. Caused by Burned & Broken Connection at Chromalox Strip Heater Element for Thrust Balance Line (← links)
- 05000286/LER-1981-009-03, /03L-0:on 811110,battery Charger 31 Tripped.Cause Not specified.Delta-P Air Flow Sensing Switch Replaced (← links)