Pages that link to "PNO-II-86-023, on 860326,reactor Tripped from 100% Power Due to ESF Activation Which Occurred on High Steam Line Flow Coincident W/Low Steam Line Pressure.Caused by Closure of Loop B Main Steam Trip Valve.Investigation Underway"
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The following pages link to PNO-II-86-023, on 860326,reactor Tripped from 100% Power Due to ESF Activation Which Occurred on High Steam Line Flow Coincident W/Low Steam Line Pressure.Caused by Closure of Loop B Main Steam Trip Valve.Investigation Underway:
Displayed 50 items.
- PNO-II-86-002, on 851229,shutdown Initiated Due to RCS Leakage Exceeding Tech Spec Limits.Pressure Vessel Head Will Be Removed for Repair of Reactor Pressure Vessel Head Seals.Unit Will Be Out of Svc for Addl 16 Days (← links)
- PNO-II-85-089, on 850911,leak in Excess of Tech Specs Discovered in Reactor Coolant Loop Bypass Valve.Cause Not Stated.Valve Backseated & Leakage Reduced.Evaluation & Repairs Performed (← links)
- PNO-II-96-081, on 961112,Unit 2 Experienced Turbine Generator Trip from 100% Power.Investigation Into Cause of Turbine Generator Trip Revealed Ground Fault on Main Generator Stator Phase a Windings.Addl Followup Will Be Performed (← links)
- PNO-II-85-095, on 851011,unit Shut Down Following Failure of One Emergency Diesel Generator to Pass Routine Checks While Down for Maint.Restart Procedures Underway.Pistons & Two Cylinders replaced.Post-repair Review & Testing Completed (← links)
- PNO-II-85-100, on 851024,480-volt Circuit Breaker or Associated Components for One Battery Room Exhaust Ventilation Fan Failed,Causing Trip of Another Breaker. Plant Gradually Shut Down (← links)
- PNO-II-85-075, on 850802,plant Shut Down Before Leakage in Steam Generator 14 Exceeded Tech Spec Limit of 500 Gallons Per Day in Single Steam Generator.Plant Remained Out of Svc for 14 Days to Repair Steam Generator Leaks (← links)
- PNO-II-85-061, on 850613,unplanned Release of Radioactive Gases Occurred.Caused by Relief Valves Lifting as Result of Water Filling Surge Drum That Removes Radioactive Gas from Primary Coolant.Offsite Doses Negligible (← links)
- PNO-II-80-034, on 800226,small Leak Observed from Reactor Water Storage Tank Cooling Sys.Estimated 270 Gallons of Water Contaminated Ground.Licensee Sampling of Storm Drain Sys Showed No Release.Contaminated Matl to Be Shipped (← links)
- ML20151X460 (← links)
- ML20151U930 (← links)
- ML20151U888 (← links)
- ML20151U078 (← links)
- PNO-II-88-022, on 880405,low Levels of Radioactive Matl Detected in Demineralizer Beds for Plant Makeup Water.Caused by Concentrating Effect of Radionuclides.Licensee Currently Storing Spent Demineralizer Beds Onsite Until NRC Approval (← links)
- PNO-II-88-004, on 880113,licensee Identified Resin Intrusion from Powdex Demineralizer Sys Into Secondary Side of Steam Generator.Resin Causes Formation of Sulphates,Believed to Be Prime Cause of Steam Generator Tube Failures (← links)
- PNO-II-84-042, on 840705,contractor Employee Sustained Back Injuries When Falling 10 Feet While Performing Decontamination Work.Employee Transported to Hosp.Evidence of Contamination,Cracked Rib & Back Injuries Identified (← links)
- PNO-II-86-056, on 860804,unidentified Leakage of 1.31 Gpm Noted.Power Reduced to Allow Containment Entry to Identify Leakage.Three Valves,Including Loop Stop Valve,Found Leaking.On 860805,reactor Shut Down to Repair Leak (← links)
- PNO-II-92-020, on 920327,hot Particle Was Detected on Forehead of Health Physics Technician When Exiting Radiation Control Area.No Erythema Was Oberved & Employee Scheduled to Visit Company Physician as Precaution (← links)
- PNO-II-86-029, on 860411,reactor Tripped While Unit Operating at 70%,due to Loss of Permanent Magnet Generator in Exciter Unit.Repairs Will Be Completed by 860415.During Shutdown, Cooldown Rate Higher than Expected (← links)
- PNO-II-86-051, media Interest Developed Re Denial of Plant Access to Eight Painting Contractor Employees Following Internal Licensee Investigation of Possible Illegal Drug Use.No Charges Filed (← links)
- ML20207G518 (← links)
- PNO-II-86-061, on 860827,turbine & Reactor Manually Tripped Due to High Bearing Vibration on Main Turbine.Caused by Damage to Some Turbine Blades on Last Stage of Low Pressure Turbine.Corrective Action Being Evaluated (← links)
- PNO-II-85-122, on 851228,surveillance Test Determined That Unit 1 RCS Unidentified Leak Rate to Be Approx 0.28 Gpm in Excess of 1.0 Gpm TS Limit.Leakage Suspected to Be Coming from in-core Thermocouple Electrical Connection Seal (← links)
- PNO-II-86-020, on 851031,bushings Were Installed During Outage Following Engine Failure in Diesel Generator of Plant Unit 2 (← links)
- PNO-II-87-079, on 871128,North Anna Unit 1 Was Taken Off Line Due to Excessive Seal Leakage on B Reactor Coolant Pump. Outage Planned for 10 Days to Replace Seal Package & Inspect Lower Radial Bearing on Pump.Commonwealth of VA Informed (← links)
- PNO-II-87-060, on 870719,hot Particle Recovered from Skin of Left Shoulder Blade of Contract Health Physics Technician & Determined to Be 1.6 Uci of C-60.Investigation Continuing. Technician Restricted from Radiation Control Zone (← links)
- ML20249B965 (← links)
- ML20249B892 (← links)
- ML20249A661 (← links)
- ML20248L902 (← links)
- ML20248L602 (← links)
- ML20248L121 (← links)
- ML20248L116 (← links)
- ML20248L006 (← links)
- ML20248K982 (← links)
- ML20248F146 (← links)
- PNO-II-89-026, 80,000 1b Reactor Coolant Pump Motor Enroute to Cheswick,Pa Collapsed One Side of Low Boy Trailer Resulting in Small Brush Fire.Surveys at Site Confirmed No Contamination.Commonwealth of VA Health Dept Notified (← links)
- ML20236X101 (← links)
- ML20236T973 (← links)
- ML20236J943 (← links)
- ML20236J939 (← links)
- ML20236J889 (← links)
- ML20236J843 (← links)
- ML20236J770 (← links)
- ML20236J766 (← links)
- ML20236J761 (← links)
- ML20236J653 (← links)
- ML20236J630 (← links)
- ML20236J598 (← links)
- ML20236J584 (← links)
- ML20236F414 (← links)