Pages that link to "PNO-III-86-052, on 860601,both Feedwater Pumps Tripped During Surveillance Test,Causing Reactor Water Level to Decrease Below Scram Level.Investigation to Determine If ATWS Occurred or If Instrumentation Faulty Underway"
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The following pages link to PNO-III-86-052, on 860601,both Feedwater Pumps Tripped During Surveillance Test,Causing Reactor Water Level to Decrease Below Scram Level.Investigation to Determine If ATWS Occurred or If Instrumentation Faulty Underway:
Displayed 48 items.
- PNO-III-97-038, on 970423,Com Ed Announced Delay in Planned Startup of Lasalle Nuclear Power Station Until Spring 1998. Schedule Change Will Result in Initial Laying Off of Contract Workers Out of Contract Work Force at Site (← links)
- PNO-III-97-030, on 970327,five of Six Simulator Crews Rated Unsatisfactory by Licensee & of 31 Operators Six passed,18 Failed as Individuals & Seven Failed Because of Crew. Operators That Failed Were Suspended (← links)
- PNO-III-86-021, several Mechanical Snubbers Found Inoperable During Augmented Inservice Program to Demonstrate Operability of Shock Absorbers.Failed Snubbers Found in safety-related Sys,Including RHR Sys,Msiv,Hpcs & LPCS (← links)
- PNO-III-86-005, on 860122,during Ultrasonic Testing on Recirculation Sys Welds,Two Cracks Discovered on 12-inch Diameter Piping.Consultant Investigating Cause of Cracks & Determining Corrective Action (← links)
- PNO-III-97-025, on 970311,licensee Declared Unusual Event After Determining,Water Level in LaSalle Lake Exceeded Plant Design Limits.Nrc Resident Inspectors Will Continue to Monitor Licensee Activities (← links)
- PNO-III-96-074, on 961213,licensee Planned to Extend Outages for LaSalle Units to Address Operational & Engineering Issues Identified.Team Also Raised Some Concerns in Area of Plant (← links)
- PNO-III-85-044, on 850531,unit Manually Scrammed Due to Decreasing Vacuum in Condenser.Caused by Rupture of Flexible Expansion Joint on Discharge Side of Circulation Pump 1B Flooding Crib House & Causing Loss of All Svc Water (← links)
- PNO-III-85-042, on 850527,security Personnel Discovered Water Bubbling Out of Ground Near Condensate Storage Tank.Caused by Broken Pipe 20 Ft Below Ground.Leak Halted When Personnel Closed Valve,Isolating Tank (← links)
- PNO-III-85-062, on 850719,confirmatory Action Ltr Issued Requiring Review of All Canceled or Rejected Change Requests to Verify Status of Drawing Changes Prior to Restarting Both Reactors (← links)
- PNO-III-85-060, on 850712,facility Shut Down for Maint on RHR Sys Train a Shutdown Cooling Injection Valve & Train B Suppression Pool Spray Valve.Valves Failed Local Leak Rate Testing.Outage Expected to Last Until 850722 (← links)
- PNO-III-98-047, on 981005,diver Lost Consciousness While in Unit 2 Suppression Pool.Diver Received Minor Contamination on Hair During Removal of Mask & Diving Suit.Diver Was Successfully Decontaminated (← links)
- PNO-III-86-015, on 860219,contractor Employee Suffered Apparent Back Injuries & Possible External Contamination in Fall from Ladder in Unit 1 Drywell.Individual Accompanied to Hosp by Licensee rad-protection Personnel (← links)
- ML20151U941 (← links)
- ML20151U399 (← links)
- PNO-III-93-052, on 930914,reactor Scram & Concurrent Loss of Offsite Power Occurred Caused by Failure of Station Auxiliary Transformer.Power Was Supplied & Two of Three Emergency Diesels Restored to Standby Condition (← links)
- PNO-III-98-037, on 980724,Region III Issued Ltr to Util Indicating Sufficient Improvements Made to Support Unit 1 Restart.Unit 2 Will Remain Shut Down for Continuing Mods & Performance Improvement Activities (← links)
- ML20198N507 (redirect page) (← links)
- PNO-III-86-052 (redirect page) (← links)
- PNO-III-89-057, on 890826,reactor Scrammed from 10 Percent Power,Apparently as Result of Pressure Spike in First Stage of Turbine (← links)
- PNO-III-89-016, on 890303,Unit 1 Reactor Scrammed from 86% Power as Result of Turbine Trip,Which Appeared to Be Related to Fault in Unit 2 Sys Auxiliary Transformer. Unit 1 Expected to Remain Shut Down for Three Days (← links)
- PNO-III-86-044, on 860509 & 11,reactor Scrammed on Low Reactor Water Level & After Receiving Group 1 Isolation Signal on High Main Steam Line Flow,Respectively.Util Decided to Repair Suspect Reactor Recirculation Pump Seal (← links)
- PNO-III-86-052, A:on 860601,reactor Feedwater Pump Failed to Trip.Augmented Investigation Team Determined Problem Caused by Setpoint Variation.Reactor Placed in Cold Shutdown (redirect page) (← links)
- PNO-III-87-046, on 870228,radwaste Shipment Driver Arrested for Driving While Intoxicated After Truck Slid Off Roadway While Being Parked.Replacement Driver Sent.Truck Surveyed & Escorted Back to Plant Site (← links)
- PNO-III-88-090, on 881031,5,000 Gallons of Liquid Radwaste Leaked Through Failed Seal on Radwaste Evaporator HX in Radwaste Bldg.Util Drained Water Out of Radwaste Room & Decontaminated Affected Areas.No Liquid Entered Drain Sewer (← links)
- PNO-III-86-039, on 860425,licensee Received in-plant Telephone Call from Unidentified Male Re Bomb Threat.Area Evacuated & Facility Searched.No Bomb Found.Licensee Security Organization Continuing Investigation (← links)
- PNO-III-99-020, on 990409,Unit 2 Had Been Shut Down Since Sept 1996 for Refueling Outage That Was Extended in Order to Address Extensive Equipment Condition.Util Completed Comprehensive Corrective Action Program (← links)
- PNO-III-86-079, on 860807,Region III Authorized Restart, Lifting 860602 Hold on Operation Imposed Due to Reactor Water Level Switch Problem.On 860806,IE Decision Issued in Response to Seneca,Il 2.206 Petition Re Emergency Plan (← links)
- PNO-III-87-041, on 870319,turbine Tripped & Caused Reactor Scram.Caused by Fault in 6.9-kV & 4,160-volt Lines from Auxiliary Transformer to in-house Busses.Fault Also Caused Arcing & Burning of Busses.Fire Extinquished (← links)
- PNO-III-82-031, State of Il Atty General Requested NRR to Institute Show Cause Proceeding Against Util for Suspension of NRC Consideration of Fuel Loading & Low Power Testing License (← links)
- PNO-III-92-043, on 920827,while Unit 2 Reducing Power to 800 Mw,Turbine Tripped Due to Thrust Bearing Wear Detector Signal.Several Equipment Problems Occurred Following Scram. Operators Successfully Established Steam Flow to Condenser (← links)
- PNO-III-97-096, on 971211,unloaded Handgun & Ammunition Found in Brief Case of Il Resident Inspector.Inspector Placed on Administrative Leave & Il State Police Performing Investigation (← links)
- PNO-III-86-058, on 860620,town of Seneca,Il Withdrew from Emergency Planning for Facility.Mayor Requests That Plant Not Be Permitted to Resume Operations Until Valid Emergency Plan Developed (← links)
- PNO-III-86-149, on 861217,seal on motor-driven Feedwater Pump Failed While Pump Was Being Started,Causing Leak of About 200 Gallons Per Minute.Water Was Drained to Radwaste Water Treatment Sys (← links)
- PNO-III-86-075, on 860731,village of Seneca,Il Filed Suit Against NRC to Prevent Resumption of Facility Operation.Suit Cites Alleged Shortcomings in Emergency Planning Activities & Troubled Performance Record (← links)
- PNO-III-87-153, on 871216,during Testing of Closing Function of Eight Msivs,Outboard MSIV on Steam Line C Opened, Indicating Fast Closure Solenoid Malfunctioned.Solenoids Replaced on Affected Misv.Investigation Continuing (← links)
- PNO-III-87-151, on 871209,licensee Identified Leak on Reactor Feed Pump B Min Flow Line to Condenser.Cause Unknown. Feedwater Pumps Visually Inspected.Power to Unit 2 Reduced to Take Pump out-of-svc for Closer Insp (← links)
- ML20249B498 (← links)
- ML20249A058 (← links)
- ML20236M101 (← links)
- PNO-III-89-050A, on 890801,turbine Driven Reactor Feedwater Pump B Started to Act Erratically While Operating at 98% Power.Licensee Currently Investigating Cause of Problem.Flow Control Valve Opened & Recirculation Pump a Restarted (← links)
- PNO-III-89-050, on 890801,turbine-driven Reactor Feedwater Pump B Acted Erratically When Operator Changed Level Control & Placed Pump Into Automatic.Recirculation Pump a Tripped to Permit Opening of Flow Control Valve.Cause Under Review (← links)
- PNO-III-89-016A, on 890306,Unit 1 Returned to Operation Following Reactor Scram on 890302.Unit 2 Remained in Operation & Unit 2 Station Auxiliary Transformer,Which Failed on 890302,repaired & Returned to Svc (← links)
- PNO-III-86-052B, on 860601,reactor Level Switches Failed to Actuate Properly.Testing of Operability of Switches Begun. Licensee Declared All ECCS Inoperable for Both Units (← links)
- PNO-III-87-021, on 870206,unit Shut Down to Repair Crack in Weld in Hydraulic Control Sys for Reactor Recirculation Sys Flow Control Valve 1B.Leak Identified on 870204.Repair Completed & Reactor Returned to Operation on 870209 (← links)
- PNO-III-86-052A, on 860601,reactor Feedwater Pump Failed to Trip.Augmented Investigation Team Determined Problem Caused by Setpoint Variation.Reactor Placed in Cold Shutdown (← links)
- PNO-III-88-018A, on 880309,technician Error Resulted in Both Recirculation Pumps Tripping Followed by Isolation of Steam Supply to Feedwater Heaters.Reactor Tripped When Power Spike Reached 118% Setpoint on High Aprm.No Fuel Damage Occurred (← links)
- PNO-III-88-018, on 880309,reactor Scrammed.Caused by Technician Error.Licensee Elected to Place Unit in Cold Shutdown for Various Maint Activities.State of Il & NRC Notified (← links)
- PNO-III-96-063A, on 961003,extension of Forced Outage & Special Insp Team Dispatched Update Made.Unit Shut Down on 960922 to Repair Turbine Control Valve (← links)