Pages that link to "ML20126D190"
Jump to navigation
Jump to search
The following pages link to ML20126D190:
Displayed 50 items.
- PNO-III-86-020, on 860303,Westinghouse DB-50 Reactor Trip Breaker Tripped at 190 Milliseconds During Testing. Subsequent Response Tests Satisfactory.Vendor Assisting in Troubleshooting (← links)
- PNO-III-97-035, on 970417,licensee Informed Zion Station of Results of Operations Assessment of Licensed & non-licensed Operating Staff.Licensee Assessed 187 Employees,Both in Mgt & Bargaining Unit Positions.States of Il & Wi Informed (← links)
- PNO-III-97-034, on 970417,decision Not to Replace SGs Made. as Result of Decision,Comm Ed Stated Zion Station Would Be Shut Down Before Expiration of Operating Licenses in 2013. Util Most Probably Support Operation to 2005 (← links)
- PNO-III-85-099, on 851125,primary Coolant Sys Leaks Noted After Reactor Trip.Most Repairs Completed in Hot Standby. Remaining Leaks,In Two Safety Injection Check Valves & Gasket Flange for Coolant Pump,Scheduled for Cold Repair (← links)
- PNO-I-97-020, on 970407,Allegheny Power Sys Inc & Dqe Inc, Parent Co of Duquesne Light Co,Announced Billion Dollar Agreement to Merge Companies.Merger Unanimously Approved by Both Companies Boards of Directors (← links)
- PNO-II-85-078, crack Identified on Weld of 3/4-inch Sample Line Running Off RCS Letdown Line.Weld Crack in Identical Location to One Found on 850729.Weld Repaired.Pipe Supports Being Installed (← links)
- 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)
- ML20148D761 (← links)
- PNO-III-80-113, on 800623,while Heating Up Plant for Initial Criticality,Inadvertent Actuation of Safety Injection Occurred.Caused by Manual Opening of Main Steam Isolation Valves.All Equipment Functioned as Expected (← links)
- PNO-III-80-166, on 800903,unit Tripped from 93% Power Due to Low Steam Generator Level,Caused by Feedwater Pump Trip. Water Hammer Occurred While Steam Generator Level Was Below Feed Ring Causing Safety Injection Actuation (← links)
- PNO-I-97-040, on 970627,Unit 1 RPS Trip Functions Did Not Meet Design Requirements & Were Inoperable.Licensee Intends to Install Design Change to Resolve IEEE-279 Postulated Failure Concerns.Operators Began TS Required Shutdown (← links)
- PNO-II-86-007, on 860117,local Media Interest Developed as Result of Detection of Contamination on Outside Wall of Condensate Demineralizer Waste Evaporator on 860115.Licensee Analyzing Addl Soil Samples for Possible Contamination (← links)
- PNO-I-85-083, on 851031,unmonitored Release of 1,600 Gallons Radioactive Water from Unit 1 Boric Acid Holding Tank Occurred.Caused by Personnel Error.Leak Isolated & Sewers Monitored.Unit 2 Worker Contaminated on Shoe (← links)
- PNO-III-85-093, on 851029,reactor Tripped on Spurious Low Flow Signal in Primary Sys.Unit Will Remain Shut Down Until Licensee Investigation Completed & NRC Concurs W/Findings. Special Insp Team Dispatched.State of Mi Will Be Notified (← links)
- PNO-III-85-102, on 851214,during Outage,Both Trains of RHR Sys Lost When Water in Reactor Vessel Drained Below Level of Suction Line.Caused by Erroneous Control Room Indication of RCS Configuration Used for Outage (← links)
- PNO-I-97-017, on 970319,Units 1 & 2 Experienced Dual Unit Reactor Trip from Full Power Due to Electrical Fault Protection Signal from 345 Kv Bus in Onsite Switchyard. Signal Tripped Both Main Generators (← links)
- PNO-III-97-010, on 970219,diesel-driven CS Pump Found to Be Inoperable During Routine Surveillance Test.Reactor Operator Realized,Rods Were Moved Further than Expected.Actual Safety Significance of Error Minimal (← links)
- PNO-III-97-024, on 970311,Unit 1 Sys Auxiliary Transformer Tripped as Result of Actuation of Sudden Pressure Relay, Indicating Possible Fault in Transformer.Nrc Providing round-the-clock Insp Coverage at Zion (← links)
- PNO-II-85-080, on 850821,orderly Shutdown Directed by TVA Due to Independent Contractor Concerns That Documentation Inadequate for Environ Qualification of Electrical Equipment.State of Tn Informed (← links)
- PNO-I-85-062, on 850829,at 100% Power,Reactor Tripped & Safety Injection Occurred.Caused by Broken Pipe Fitting on Instrument Air Compressor Tank in Turbine Bldg.Pressurizer Pressure Restored to Normal (← 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-85-074, on 850729,employees Received Minor Contamination.Caused by Weld Leak Off RCS Letdown Line.Flow Rate Reduced & Path Opened to Maintain Water Control. Employees Decontaminated at Plant (← links)
- PNO-III-97-003, on 970117,outage Extended to Address Technical & Plant Condition Issues.Actions to Be Completed During Outage Extension Include Submitted Info (← links)
- PNO-III-85-087, on 851007,concrete Finisher Killed After Falling 45 Ft While Working on Interim Radwaste Storage Facility.No Contamination Involved (← links)
- PNO-I-85-075, on 851006,plant Tripped.Caused by Condensation in Condenser Vacuum Sensing Line Reaching Sensor Causing Turbine Trip W/Automatic Reactor Trip.Plant in Cold Shutdown for Maint & Mod to Condenser (← links)
- PNO-I-97-001, on 970106,unit 2 Experienced Reactor Trip from 98% Power Due to Turbine Trip.All Control Rods Inserted Completely.Auxiliary Feedwater Sys Started on Low SG Water Level Signal as Expected.Plant Remains Stable in Mode 3 (← links)
- PNO-III-85-059, on 850716,facility Shut Down to Investigate Increasing primary-to-secondary Sys Leakage in Two Steam Generators.Cause Not Stated.Eddy Current Testing Will Be Performed to Locate & Plug Leaking Tubes (← links)
- PNO-II-96-071, on 961011,Unit 2 Experienced Low Seal Flow Alarm on RCP 4,seal 1 & High Standpipe Alarm on RCP 4. Controlled Shutdown Begun as Required by Procedures.Licensee Currently Investigating Cause of Equipment Malfunctions (← links)
- PNO-I-85-051, on 850717,diesel Generator 1 Failed Monthly Surveillance Test Due to Woodward Governor Load Limit Setting Being Set at 3,instead of Normal Setting of 10. Caused by Possible Tampering W/Generator Setting (← links)
- PNO-II-96-069, on 961005,potential Transformer in Plant 500 Kv Switchyard Exploded.Cause Determined to Be Unusual Event. Licensee Has Developed Plans for Damage Assessment,Repairs, Investigation & Root Cause Analysis (← links)
- PNO-I-85-044, on 850628,RCS Water Inventory Balance Indicated Unidentified Leak Rate Increased from 0.72 Gpm (Tech Spec Limit Is 1.0 Gpm) on 850627 & Steam Observed Leaking from Inlet Flange of Pressurizer Relief Valve PR-4 (← links)
- PNO-III-92-045, on 920908,unit Shut Down Due to High Generator Vibrations.Cause Undetermined.Licensee Will Remove & Inspect Generator Rotor (← 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)
- ML20126B545 (← links)
- PNO-I-92-075, upon Investigation of Alarm Printed Out on Auxiliary Typewriter on 921213,operators Determined That Cpu for Overhead Annunciator (Oha) Had Failed to Perform, Resulting in Loss of Oha Sys for 1 H & 41 Minutes (← links)
- ML20154M820 (← links)
- ML20154H026 (← links)
- ML20154G084 (← links)
- ML20154D916 (← links)
- ML20154D884 (← links)
- ML20154C622 (← links)
- ML20151Y205 (← links)
- PNO-I-88-086, on 880822,Unit 2 Experienced one-out-of-three Actuation of Chlorine Detection Sys.Unit 1 Actuated on two-out-of-three Coincidence.Bottled Air Pressurization Sys Began to Discharge Into Control Room.Addl Tests Performed (← links)
- ML20151Y123 (← links)
- ML20151X972 (← links)