Pages that link to "ML20077R518"

The following pages link to ML20077R518:

Displayed 50 items.

• ML20064E862 ‎ (← links)
• ML20062D453 ‎ (← links)
• NPL-97-0565, LER 97-S02-00:on 970815,perimeter Zones,Doors & Cameras Were Lost.Caused by Inadequate Compensatory Measures Taken for Failed Multiplexer.Repaired Mux for e-field Zone 8 ‎ (← links)
• 05000301/LER-1998-004-01, :on 980424,operations W/Reactor Core Power Level Was in Excess of 1518.5 Mwt.Caused by Failure to Return FT-466V Input Parameter to Off Scan.Input FT-446V Was Removed from on Scan at Approx 1452 ‎ (← links)
• 05000266/LER-1989-007, :on 890625, Loss of Feedwater Turbine Trip Blocked Status Light Illuminated on Control Board 1-C03. Cause unknown.P-20 Bistable Alarm Module Replaced ‎ (← links)
• 05000266/LER-1989-004, :on 890421,discovered Nonconservative Analysis of Transfer to Containment Sump Recirculation Mode.Caused by Inadequate Analysis of Interruption of ECCS Flow During Large Break LOCA Scenario.Night Order Issued ‎ (← links)
• 05000266/LER-1989-002-01, :on 890412,during Type C Containment Leak Rate Testing,Charging Sys Check Valve 1-370 Discovered Leaking in Excess of Tech Spec Limits.Caused by Bent Dowel Pin in Valve Disc.Valve Repaired & Restored ‎ (← links)
• 05000266/LER-1989-003, :on 890601,injection of High Artificial High Radiation Signal Failed to Close Containment Isolation Valve.Defective Solenoid Valve Controlling Air to Isolation Valve Air Operator Replaced ‎ (← links)
• 05000301/LER-1989-003-01, :on 890712,level Channel 2LE-934 Declared Inoperable & Fill Operation Suspended When Channel Indicated Spuriously.Caused by Moisture Intrusion Between Halar Insulator & Sensing Rod.Detector Replaced ‎ (← links)
• 05000301/LER-1989-002, :on 890329,unit Experienced Main step-up Transformer Lockout Main Generator Breaker Trip & Concurrent Turbine & Reactor Trips.Caused by Wiring Error in Terminal Box 2-TB69.Repairs Completed ‎ (← links)
• 05000266/LER-1987-005-01, :on 871121,reactor Coolant Pressure Decreased Resulting in Reactor Trip Due to Low Pressurizer Pressure. Caused by Spray Valve Failure.Broken Solder Connection Repaired & Pilot Valve Steam Replaced ‎ (← links)
• 05000301/LER-1987-005, :on 871120,control Rod C7 Discovered to Be Out of Alignment.Caused by Blown Fuse.Quadrant Flux Tilt Verified & Found Acceptable.Fuse Replaced ‎ (← links)
• 05000266/LER-1998-015, :on 980420,containment Fan Cooler Test Results Were Noted Outside Acceptance Criteria.Cause Is Under Evaluation.Pressure Washing of Air Side of Cooling Coils for All Four Unit 1 CFCs Has Been Completed ‎ (← links)
• 05000301/LER-1987-004-01, :Degradation of Steam Generator Tubes Noted During Eddy Current Exam Conducted on 871008-22.One Tube Weld Repaired.Remaining Tubes Left as Found Due to Minimal Leakage Observed & Hazards Associated W/Repair ‎ (← links)
• 05000301/LER-1989-001, :on 890203,operator Dicovered Both Supply Breakers in Open Position Due to Simultaneous Automatic Turbine Runback.Cause Not Positively Identified.Efforts Will Be Made to Ease Difficulty W/Supply Breakers ‎ (← links)
• 05000266/LER-1988-003, :on 881209,discovered That Procedures for Delineating Testing of Undervoltage Channels on 4,160-volt Safeguards Power Supply Did Not Ensure Adequate Testing of Channels.Undervoltage Procedures Revised ‎ (← links)
• 05000301/LER-1987-003-01, :on 870818,two MSIVs Discovered W/O Dc Control Power Needed to Trip Valves Closed.Caused by Personnel Error.Operation of MSIVs Restored to Complete Clearing Red Tag Series & Dc Power Breaker Closed ‎ (← links)
• 05000266/LER-1997-038, :on 970926,determined That Inoperability of Standby Emergency Power Placed Unit 2 in 7-day Lco.Caused by Failure That Occurred When EDG G-03 Was Shutdown.Repaired Governor & Returned EDG G-03 to Service ‎ (← links)
• 05000266/LER-1996-016, :on 961030,discovered as-found Lift Pressure for Unit 2 Pressurizer Safety Valve 2RC-434 Exceeded Max Lift Pressure Allowed by ASME Code.Caused by Use of Ambient Temp in Test Lab.Set Valve at More Appropriate Ambient Temp ‎ (← links)
• 05000266/LER-1998-010, :on 980213,inadequate TSs Surveillance of Containment Spray Logic Was Noted.Caused by Failure to Adequately Verify Bistable Trip Switch Position After Placement Into Normal Position ‎ (← links)
• 05000266/LER-1997-043, :on 971115,inadequate TS Surveillance of RT Sys Interlocks Was Noted.Caused by Failure to Adequately Test RT Interlock Permissive Circuitry.Required Surveillance Testing of Permissive Circuitry Was Completed on 971121 & 971125 ‎ (← links)
• 05000266/LER-1997-036, :on 970826,potential Common Mode Failure in DC Power Supply Which Could Disable AFW Sys Was Noted.Caused by Inadequate Design & Design Review.Plant Mods Were Performed to Eliminate Potential Common Mode Failure ‎ (← links)
• 05000266/LER-1999-007, :on 990831,cable Tray Fire Stops Do Not Meet App R Exemption Requirements Occurred.Caused by Improper Installation of Approved Plant Mod.New Mod Has Been Initiated to Provide Three H Rated Fire Barrier ‎ (← links)
• 05000301/LER-1998-002-01, :on 980313,discovered Serious Degradation of Reactor Coolant Cooling Water Return Line Check Valve.Caused by Service Related Wear.Valve Was Opened,Repaired & Returned to Service ‎ (← links)
• 05000301/LER-1998-003-01, :on 980408,ASME Section XI Pressure Test Program Surveillance Was Missed.Caused by Failure to Consult Latest Rev of Increased Frequency Surveillance List. Condition Rept Will Be Written to Document Requirement ‎ (← links)
• 05000301/LER-1986-004-01, :on 860928,MSIVs Failed to Close Upon Demand from Manual Pushbuttons in Control Room.Valves Will Be Disassembled & Inspected to Determine Cause.Corrective Actions Will Be Reported ‎ (← links)
• 05000266/LER-1987-002, :on 870409,as Found Containment Integrated Leak Rate Determined to Exceed Allowable Tech Spec Limit.Caused by Packing Failure of One Valve.Valve Replaced & Successfully Tested as Part of Leak Rate Test ‎ (← links)
• 05000266/LER-1987-001-01, :on 870404,unit Manually Tripped After 22 Control Rods Dropped.Reactor Engineer Incorrectly Connected Leads Shorting Out Test Instrument.Mods to Test Equipment to Prevent Hookup Errors Evaluated ‎ (← links)
• 05000266/LER-1986-005-01, :on 861117,reactor Tripped Due to Loss of Power on Red Instrument Bus.Caused by Failure of Control Circuit Diode in Bus Inverter.Diodes Replaced ‎ (← links)
• 05000266/LER-1987-004, :on 870515,when Battery D05 Breaker Opened for Cell Replacement,Battery Charger D07 Initiated Voltage Spike on Dc Bus D01,causing Reactor Protection Sys Actuation. Cause Under Investigation.Charger Tested ‎ (← links)
• 05000301/LER-1986-007, :on 861009-22,eddy Current Insp of Steam Generator Tubes Conducted.Eight Tubes Degraded Equal to or Greater than 40% & Six W/Undefined Signal.All 58 Tubes Plugged ‎ (← links)
• 05000266/LER-1987-003, :on 870424,check Valve for Nitrogen Inlet to Reactor Coolant Drain Tank Vent Header Leak Rate Exceeded Containment Leak Rate Allowed.Caused by Foreign Matl in Nitrogen Piping.Valve Will Be Removed from Svc ‎ (← links)
• 05000301/LER-1986-006, :on 861002,04 & 08,reactor Trip Signals Generated.Caused by Blown Fuse,Erroneous Voltage on Signal Cable & Voltage Fluctuation on Instrument Bus,Respectively. Procedures for Instrument Tests Revised ‎ (← links)
• 05000301/LER-1987-001, :on 870205,steam Flow/Feedwater Flow Mismatch Setpoint for Reactor Trip Found in Violation of Tech Spec. Caused by Failed Electrolytic Capacitor in Square Root Converter Module FM-475B.Module Repaired ‎ (← links)
• 05000266/LER-1997-020, :on 970414,discovered Conditions Outside of 10CFR50,App R,Safe Shutdown Analysis.Caused by Inadequate Documentation of Implementation of Existing App R,Safe Shutdown Analysis.Supplemented Compensatory Measures ‎ (← links)
• 05000266/LER-1999-004, :on 990420,fuel Oil Transfer Pump Cable in AFW Pump Room Was Noted Outside App R Design Basis.Caused by Error in Design of New Fuel Oil Transfer Sys.Condition Rept CR 99-1140 Was Initiated ‎ (← links)
• 05000301/LER-1986-004-01, :on 860928,MSIVs 2CV-2017 & 2CV-2018 Failed to Close Upon Demand & on 870117,during Testing of Valve 2CV-2017,disc Stop Broke & Stuck Open.First Event Caused by Excessive Packing Friction.Valves Repaired ‎ (← links)
• 05000301/LER-1999-001-01, :on 990211,EDG Output Breaker Failed to Remain Closed During Surveillance Testing.Caused by Breaker Control Switch Failing to React Quickly.Modified Closing Circuit for EDG Output ‎ (← links)
• 05000266/LER-1986-006-01, :on 861128,while Unit Operating at 100% Power, 2.5 Turbine Runback to 95% Power Experienced.Caused by Momentary Loss of Power on White Instrument Bus While Normal Power Supply Inverter Transferred to Spare ‎ (← links)
• 05000301/LER-1986-008, :on 861128,reactor Tripped During Beginning of Life Physics Test.Caused by Low Water Level in Steam Generator A.Event Will Be Discussed in Normal Training Cycle for Licensed Operators in Next Training Cycles ‎ (← links)
• 05000266/LER-1999-004, :on 990420,discovered That Fuel Oil Transfer Pump Cable in AFW Pump Room Outside App R Design Basis. Caused by Cable Routing Discrepancy.Fire Rounds Increased & Procedures Being Developed to Facilitate Using G-05 EDG ‎ (← links)
• 05000301/LER-1986-003, :on 860603,turbine Runback Occurred Due to Loss of Power on Instrument Bus.Caused by Trip of White Inverter Output Breaker.Procedures for Placing Inverter on Line Will Be Revised by 860901 ‎ (← links)
• 05000266/LER-1999-003, :on 990406,TS SR for ECCS & Containment Spray Was Not Fully Implemented.Caused by Conservative Interpretation of Valve Impact.Revised Procedures.With ‎ (← links)
• 05000301/LER-1999-002-01, :on 990323,discovered That Red Channel of SG Pressure Indication Passes Through Fire Zone.Caused by 1983 Modification Oversight.Twice Per Shift Fire Round Has Been Established for Fire Zone Pending Cable Routing Correction ‎ (← links)
• 05000301/LER-1985-002-03, :on 851017,reactor Coolant Pump Component Cooling Supply Line Check Valve Leakage Exceeded Tech Spec Limits.Caused by Valve Deficiencies.Valve Inspected & Repairs Made on Internal Parts ‎ (← links)
• 05000266/LER-1997-043, :on 971115,inadequate TS Surveillance of RTS Interlocks Was Discovered.Caused by Failure to Adequately Test Reactor Trip Interlock Permissive Circuitry.Required Surveillance Testing of Permissive Circuitry Was Completed ‎ (← links)
• 05000266/LER-1998-001, :on 980102,missed Surveillances Required by Section XI Pressure Tp Constituted Condition Prohibited by Ts.Caused by Inadequate Procedural Control.Procedure Changes Completed to Set Test Frequency Requirements ‎ (← links)
• 05000266/LER-1997-040, :on 971017,discovered That Potential Existed for Unit 1 Lines to Fail,Due to Thermal Stresses Induced During Full Loss of Cooling to Reactor Coolant Pump Seals. Formal Code Compliance Analysis Initiated ‎ (← links)
• 05000266/LER-1997-039-01, :on 970615,RHR Loop Inoperable.Caused by Removal of CCW Pump from Svc.Ccw Pump Restored ‎ (← links)
• 05000301/LER-1997-004-01, :on 970729,declared RHR Loop Inoperable Due to CCW Leak.Caused by Failure of RHR Heat Exchanger CCW Piping. Repaired Piping & Declared RHR Loop Operable ‎ (← links)