Pages that link to "PNO-V-87-076, on 871123-24,two Moderate Earthquakes Centered Near Westmoreland,Ca Occurred,Triggering Seismic Alarms at San Onofre.Unusal Event Declared.Plant Sys & Components Not Adversely Affected.Effects on Other Locations Noted"
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The following pages link to PNO-V-87-076, on 871123-24,two Moderate Earthquakes Centered Near Westmoreland,Ca Occurred,Triggering Seismic Alarms at San Onofre.Unusal Event Declared.Plant Sys & Components Not Adversely Affected.Effects on Other Locations Noted:
Displayed 50 items.
- ML20138B487 (← links)
- PNO-V-85-068, on 851003,while Operating at 50% Power,Reactor Trip Occurred After Loss of Electric Power.Three Reactor Coolant Pumps Restarted by Resetting Pump Circuit Breaker Lockout Relays.Cause Under Investigation (← links)
- PNO-V-85-067, on 851002,earthquake of Magnitude 5.0 on Richter Scale Occurred.Epicenter Located Approx 50 Miles North of Site.Event Minor,Not Felt by Site Personnel & Did Not Activate Recording Instruments (← links)
- PNO-II-85-086, on 850826,Natl Weather Svc Upgraded Tropical Storm Elena to Hurricane.Utils Contacted Re Implementation of Hurricane Procedures (← links)
- ML20137L392 (← links)
- ML20137H596 (← links)
- IR 05000264/1977002 (← links)
- ML20137G926 (← links)
- ML20137G908 (← links)
- IR 05000264/1975001 (← links)
- IR 05000264/1973001 (← links)
- ML20137G614 (← links)
- PNO-V-86-003, on 860109,during Full Power Turbine Trip Test Following Turbine Trip/Reactor Trip,Electrical Buses Which Supply Power to Reactor Coolant Pumps Failed to Transfer to Alternate Source.Restart Plans Unknown (← links)
- ML20137G478 (← links)
- ML20137G417 (← links)
- PNO-V-85-078, on 851121,unit Experienced Loss of Auxiliary Transformer C,Resulting in Loss of Control Room Lighting Due to Abnormal Breaker Lineup.Plant Shut Down (← links)
- ML20137A895 (← links)
- PNO-V-85-076, on 851108,licensee Reported That Studs in RCS Line Stops a & B Did Not Meet Hardness Requirements.Relief from 10CFR50,App A,Gdc 4 Requested to Preclude Retorquing Studs (← links)
- PNO-V-85-058, on 850912,unusual Event Declared After Main Turbine Tripped During Load Rejection Test.Low Voltage Tripped Reactor Coolant Pumps.Overcooling RCS Caused Decrease in Safety Injection Setpoint (← links)
- ML20135A869 (← links)
- ML20135A856 (← links)
- ML20135A834 (← links)
- ML20148B111 (← links)
- ML20148B093 (← links)
- PNO-IV-97-038, on 970629,Unit 2 Entered Mode 3 & Mode 4 in Preparation for Draining to Midloop.Two Charging Lines to RCS Did Not Have Balanced Flow.Same Valve Was Found to Be Partially Stuck Closed in Units 2 & 3.Plant Shutdowned (← links)
- PNO-V-86-014, on 860331,earthquake W/Magnitude of 5.3 on Richter Scale Occurred Approx 10 Miles East of Fremont,Ca.No Damage Observed at Research Reactor Facilities.Rancho Seco Did Not Feel Effects of Earthquake (← links)
- PNO-V-86-012, on 860327,loss of Both Shutdown Cooling Trains Experienced Due to Loss of Pump Suction & Cavitation.Caused by Reactor Vessel Water Vortexing Causing Air to Be Pulled Into Shutdown Cooling Lines (← links)
- IR 05000330/1977002 (← links)
- ML20140G343 (← links)
- ML20140G325 (← links)
- ML20140F593 (← links)
- IR 05000083/1982001 (← links)
- IR 05000124/1983001 (← links)
- IR 05000124/1984001 (← links)
- ML20138P075 (← links)
- PNO-V-85-088, on 851216,ventilation Fan in Train a balance- of-plant ESFAS Auxiliary Relay Cabinet Tripped Off & Caused Cabinet to Overheat.Trip Resulted in Logic Cards Malfunctioning.Licensee Actions Under Review (← links)
- PNO-V-85-073, on 851029,13.8 Kv Bus SO3 Feeder Breaker to 13.8 Kv Bus SO1 Tripped Open on Generation of Electrical Fault,Damaging Portion of Bus Bar.Cause Unknown.Plant Entered Cold Shutdown.Investigation Continuing (← links)
- PNO-V-85-085, on 851210,reactor Tripped from 100% Power. Caused by Low Steam Generator Water Level Resulting from Main Feedwater Header Containment Isolation Valve Drifting Shut.All ESF Sys Functioned as Required.Reactor Restarted (← links)
- ML20138C107 (← links)
- ML20138B566 (← links)
- PNO-V-85-052, on 850805 & 08,breaker Power Switches on Control Element Drive Mechanism Panels Found Closed.Two 13.8 Kv Electrical Breaker Incidents Under Licensee Review to Determine If Tampering Involved (← links)
- IR 05000546/1982007 (← links)
- ML20134A975 (← links)
- PNO-V-85-072, on 851024,reactor Tripped from 80% Power During Scheduled Loss of Load Test.Cause Undetermined.Util Requested Assistance from C-E to Determine Cause of Trip & Cooldown of RCS (← links)
- ML20133N392 (← links)
- PNO-V-85-069, on 851003 & 08,loss of Normal Electric Power Resulted in Reactor Trip.Caused by Switchyard Electrical Distribution Malfunction.Licensee Proceeding W/Design Change to hard-wire Control for Feeder Breakers (← links)
- ML20133F313 (← links)
- PNO-II-85-092, on 850926,Hurricane Gloria Located About 240 Miles South of Cape Hatteras,Nc,Moving North Northwest at 15 to 20 Miles Per Hour.Brunswick Unit 1 in Refueling Shutdown,Unit 2 Shut Down & Surry 1 & 2 at Full Power (← links)
- PNO-V-85-050, on 850726,while Preparing to Cool Down from 55-day Hot Functional Test Run,Alarm Received That Breaker Control Switch Operated W/O Authorization from Remote to Local Position.Cause Under Investigation (← links)
- ML20132E516 (← links)