Pages that link to "PNO-III-97-022, on 970311,Unit 1 Reactor Shut Down to Repair Reactor Protection Sys Scram Relay Malfunction.Conservative Decision Made to Repair Relay While Shutdown Rather than Troubleshoot During Power Operations"
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The following pages link to PNO-III-97-022, on 970311,Unit 1 Reactor Shut Down to Repair Reactor Protection Sys Scram Relay Malfunction.Conservative Decision Made to Repair Relay While Shutdown Rather than Troubleshoot During Power Operations:
Displayed 41 items.
- PNO-III-97-031, on 970401,licensee Identified Fractures on Auxiliary Switch Contact Block Mounted on 4 Kv Breaker Prior to Installation in Unit 2 safety-related Bus.Licensee Presently Testing Similar Breakers (← links)
- PNO-III-80-164, on 800902,licensee Found Leakage from 10-inch Core Spray Piping Inside Drywell.Two Welds in a Loop Have Seepage & One Weld in B Loop Has Visible Crack.Unit Is in Refueling Outage (← links)
- PNO-III-97-009, on 970221,contaminated Scrap Metal Occurred. Licensee Also Indicated Addl Scrap Metal Located at Il Railroad Supply Co in Cordova,Il.Nrc Inspectors Monitored Licensee Activities Surrounding Incident (← links)
- ML20138F306 (redirect page) (← links)
- PNO-III-97-022 (redirect page) (← links)
- ML20126C709 (← links)
- PNO-III-80-029, on 800208,industrial Accident Occurred in Area of Torus Involving Loss of Two Fingers by Contractor. No Gross Contamination Was Detected Due to Low Contamination Levels in Torus Area (← links)
- PNO-III-79-057, on 791209,draining Operation from Svc Water Header of Heat Exchanger Resulted in Unplanned Release of Radioactive Liquid from Primary Side When All Valves Feeding Instrument Header Were Opened (← links)
- ML20125C630 (← links)
- ML20151U429 (← links)
- PNO-III-88-066, on 880724,unit Shut Down to Investigate Ground (Short) in Main Generator.Plant Expected to Remain Shut Down for 2 to 6 Wks for Generator Repairs (← links)
- PNO-III-94-079, on 941002,shut Down of Units Occurred When Operators Discovered Temp Differential Between Loop a & Loop B Exceeded 50 Degrees F.Inspectors Monitored Licensees Activities During & After Shutdown (← links)
- PNO-III-83-100, on 831020,ultrasonic Testing Identified One Crack & Ten Crack Indications in Unit 2 Primary Sys Piping, Including Seven Indications in Reactor Water Recirculation Sys.Licensee Intends to Issue News Announcement (← links)
- PNO-III-89-017, on 890302,licensee Personnel Entered Unit 2 Drywell to Investigate Possible Leak.Steam Leak Observed from Vacuum Breaker on Discharge Piping from C Electromagnetic Rv,Which Was Indicative of Valve Leakage (← links)
- PNO-III-89-036, on 890516,unit 1 Was Shutdown to Repair Socket Weld Leak on Feedwater Regulating Valve Bypass Line. Licensee Plans to Repair Other Minor Leaks & Perform Maint Activities During Unplanned Outage.State of Il Notified (← links)
- PNO-III-90-028, on 900410,dye Penetrant Testing on Inside of Reactor Vessel Head Identified 23 Cracks of Various Dimensions.Licensee Begun Repairing Cracks by Grinding Cracked Areas (← links)
- PNO-III-93-051, on 930901,licensee Shut Unit 2 Down to Repair body-to-bonnet Leak in Feedwater Check Valve Which Makes Up Part of Containment Isolation Boundary.Leak Was Reduced to Weep by Tightening Bonnet Studs (← links)
- ML20207G253 (← links)
- PNO-III-97-099, on 971219,unit Shut Down Due to Incomplete App R Safe Shutdown Analysis for Various Fire Scenarios. Licensee Completed Procedure Revs & Exited Administrative Technical Requirement in Early Dec (← links)
- PNO-III-86-017, on 860303,HPCI Sys Declared Inoperable When Water Backed Up Into HPCI Turbine.Caused by HPCI Gland Exhaust Condenser Tube Leak Coupled W/Failure of Sump Pump Motor.Repairs to Condenser Expected to Take 4 Days (← links)
- PNO-III-86-132, on 861110,10 of 24 Reactor & Senior Reactor Operators Failed Written NRC Requalification Exam. Confirmatory Action Ltr Will Be Issued by Region Iii.Util Will Administer Accelerated Program (← links)
- PNO-III-85-030, on 850401,during Visual Exam Prior to Ultrasonic testing,through-the-wall crack-like Indication Noted in Area Between Main Recirculation Pump & Base of Jet Pump Riser (M).Corrective Action Will Be Monitored (← links)
- PNO-III-89-027, on 890417,one of Four Electromagnetic Relief Valves Stuck Open During Testing & Reactor Manually Scrammed.Probably Caused by Eroded Seat on Pilot Valve. Relief & Pilot Valves Replaced (← links)
- ML20244A976 (← links)
- ML20244A975 (← links)
- ML20249B559 (← links)
- ML20249A884 (← links)
- ML20249A866 (← links)
- ML20249A861 (← links)
- ML20236V348 (← links)
- ML20236V276 (← links)
- ML20236V139 (← links)
- ML20236V057 (← links)
- ML20236U707 (← links)
- ML20236M096 (← links)
- PNO-III-87-104, on 870801,reactor Scram Occurred as Result of Turbine & Generator Trips Due to Fault in Main Transformer. Licensee Investigating Cause of Problem.Unit Expected to Be Shut Down for Several Wks for Replacement of Transformer (← links)
- PNO-II-87-135, on 871019,equipment Operator Attempted to Open Electrical Breaker for Circulating Water Pump 2A & Inadvertently Opened Adjacent Breaker for CRD Hydraulic Pump.Operator Actions Created Fire Ball,Damaging Breaker (← links)
- PNO-III-97-071, on 970903,Comm Ed Announced Series of Mgt Changes & Restructuring of Nuclear Div Organization.New Site Vice Presidents at Braidwood & Quad Cities Former Plant Managers.State of Il Will Be Notified of Mgt Changes (← links)
- PNO-III-87-081, on 870610,earthquake Measuring 5.0 on Richter Scale Occurred Near Lawrenceville,Il.Unusual Events Declared by Six Power Stations But No Damage Observed.Ground Motion Felt at Five Other Plants (← links)
- PNO-III-86-142, on 861205,licensees Notified NRC That Electrical Splices Did Not Meet Environ Qualification Requirements & Plants Shut Down.Each Unit Has 150 Splices Which Must Be Repaired.Repairs Expected to Take 5 Days (← links)
- PNO-III-80-164A, on 800919,no Addl Cracking in Core Spray Piping Has Been Identified Other than Pipe Cracks Previously Identified.Licensee Intends to Replace Defective Piping Elbows W/Different Matl (← links)