Pages that link to "Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO"
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The following pages link to Category:PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO:
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-III-86-018, on 860307,reactor Automatically Tripped While in Process of Shutting Down for Scheduled 5-wk Maint & Refueling Outage.Caused When One Rod Failed to Fully Insert. Rod Manually Inserted.Breaker B Replaced (← links)
- 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-I-97-026, on 970427,Yankee Atomic Electric Will Begin Shipment of Reactor Vessel for Disposal.First Phase of Shipment Will Involve Heavy Haul Truck from Rowe,Ma Site to Railway Approx Six Miles Away Near Hoosac Tunnel (← links)
- PNO-I-85-092, on 851205,PUC of State of PA Voted 3.2 Billion Dollar Cost Cap.Unit About 30% Complete.Restart of Const Planned in Jan 1986 Pending Board of Directors Approval.Fuel Load Planned for Early 1990 (← links)
- PNO-IV-85-061, on 851206,scheduled Maint Outage Will Begin. Replacement of Expansion Joint in Feedwater Heater & Repair of Main Generator Cooling Sys Hydrogen Leak Will Be Completed.Restart Scheduled for 851211 (← links)
- PNO-IV-85-052, on 851003,plant Outage Initiated from Hot Standby to Replace Failed Seal on Reactor Coolant Pump 2B. Cause Not Stated (← links)
- PNO-IV-97-023, on 970423,worker Picked Up 5 Ci Am-241/Be Neutron Source Used for Well Logging & Put Source in Pocket. Licensee RSO Presently Investigating Incident.State Plans to Have Insp Team Onsite to Begin Reactive Insp (← links)
- 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-97-037, on 970422,licensee Reported That 150 Mci Am-241 Sealed Source Was Missing.Licensee Searching Facility & Requesting Mfg to Recheck Records to Determine If Gauge Could Have Been Shipped W/Other Returned Gauges (← links)
- PNO-IV-85-062, on 851206,plant Offgas Sys Experienced Transient Upon Automatic Switchover from Dryer a to Dryer C. Caused by Failure of Discharge Valve on Dryer C to Open Resulting in Back Pressure Blowing Out Water Loop Seals (← links)
- ML20137Z160 (← links)
- PNO-I-97-024, on 970422,Oyster Creek Nuclear Generating Station Commenced Controlled Shutdown of Unit Due to Equipment Problems.Unit Expected to Be Shut Down for Six Days for Correction of Diaphram Problem (← links)
- PNO-V-85-066, on 851002,loss of Main Feedwater Event Occurred.Plant Being Maintained in Hot Shutdown Condition Pending Determination of Exact Scenario,Causes & Appropriate Corrective Action.Region Evaluating Response (← links)
- PNO-III-97-036, on 970421,IDNS Reported Troxler 3440 Moisture Density Gauge Contains 9 Mci Cs-137 & 44 Mci Am-241 Sealed Sources Stolen from Licensee Truck.Idns Investigating Incident (← 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-II-97-021, on 970415,Westinghouse Informed NRC That Low Enriched U Fuel Rods Could Not Be Located.Licensee Stated No Evidence of Theft or Unlawful Diversion of Two Fuel Rods. State of Sc Notified (← links)
- PNO-V-85-081, on 851201,turbine & Reactor Trips Occurred. Caused by High Steam Generator Level Due to Sluggish Automatic Steam Generator Level Control Sys Response.No Safety Injection or ECCS Activated (← links)
- PNO-I-86-015, on 860216,water in Condenser Pumped to Condensate Storage Tank,Resulting in Overflow.Caused by Blown Fuse in Main Condenser Hotwell Level Control Sys.Water Drained by Yard Drain Sys & Released to River (← links)
- PNO-I-85-072, advising That Current Util Contract W/Yoh Security Guards Expires on 851001.Contingency Security Guard Force Assembled.Strike Not Expected to Affect Plant Operations (← links)
- PNO-V-85-082, on 851202,low Tide Concurrent W/High Seas Caused Kelp to Be Injected Into Condenser Circulating Water Intake Structure.Control RPI Lost & Reactor Manually Tripped.Cause Under Investigation (← links)
- PNO-II-85-113, State of AL Notified Region II That Bw Whitfield Memorial Hosp Inadvertently Incinerated Mo-99/Tc-99m Generator Containing 300 Mci Activity.Area Restricted.No Contamination Spread (← links)
- PNO-IV-85-049, on 850928,cooldown Commenced to Replace Seal on Reactor Coolant Pump C.Seal Cartridge Developed Crack Where Middle Cavity Seal Pressure Sensing Line Joins Cartridge.Startup Scheduled for 851003 (← links)
- PNO-IV-85-060, on 851204,State of Tx Notified Region IV of 851109 Source Disconnect from Ir-192 Radiography Camera at Basil Industrial X-Ray,Inc in Midland,Tx.Caused by Crankout Cable Breaking During Performance of Radiographic Work (← links)
- PNO-V-85-080, on 851128,oscillation of Steam Flow Resulted in Reactor Trip Due to Completion of Steam Generator Low Level Coincident W/Steam Flow/Feedwater Flow Mismatch Logic. Cause Will Be Determined Prior to Resuming Operations (← links)
- PNO-II-85-112, on 851123,Limitorque Valve Motors Inside & Outside Containment Bldg Inspected After Util Determined That Some Motors May Not Be Environmentally Qualified.Unit Will Be Restarted.Insp of Unit 3 Motors Planned (← links)
- PNO-II-85-111, on 851124,unscheduled Shutdown Greater than 48 H Anticipated.Caused by Failure of High Pressure Turbine Bearing.Outage of at Least 8 Days Expected for Evaluation & Repairs (← links)
- PNO-II-85-114, on 851203,during Operation at 93% Power, Power Loss to Two of Four Reactor Coolant Pumps Occurred Causing Reactor Trip.Caused by Short Circuited Lead from Potential Transformer.Main Feedwater Pumps Secured (← links)
- ML20137U510 (← links)
- PNO-I-85-091, on 851202,univ Inadvertently Disposed of Package Containing 2 Mci P-32 to Normal Trash.Trash Subsequently Transferred to Landfill & Buried Under Large Amount of Trash.Hazard to Public Minimal (← links)
- PNO-I-85-090, on 851202,Units I & II Tripped from Full & 80% Power,Respectively.Caused by Deenergization of Engineered Safeguards Svc Transformer III & Momentary Loss of Control to Reactor Feed Pumps.Transformer Being Tested (← links)
- PNO-III-85-100, on 851202,licensee Declared Unusual Event Due to Potential Flooding of Plant Site.Approx 150 Ft of Fencing Lost Due to Erosion by Wind & Wave Action.Gravel Used to Stem Further Erosion (← links)
- PNO-III-86-012, on 860211,unidentified Primary Sys Leakage Slightly Above Tech Spec Limit.Leakage Associated W/Leakage Past Valve Seats in Portions of Reactor Depressurization Sys.Maint Outage Planned for 860215 to Correct Leakage (← links)
- PNO-II-86-013, on 860205,packaged,unloaded mini-14 Rifle, Being Returned to Security After Repairs,Passed Undetected Through X-ray Search.Region Will Send Security Inspector to Facility on 860210.Util Prepared to Respond to Media (← links)
- PNO-III-97-033, on 970407,radioactive Scrap Metal & Radium Instrument Dials Found at Cozzi Iron & Metal,Chicago Il.Shop Accepts Shipments of Scrap Metal for Recycling.Us EPA Region V Notified (← links)
- 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-I-97-022, on 970410,GPU,Inc Announced,Addition to Continued Operation of Oyster Creek & Also Exploring Options of Sale.Util Will Begin Next Wk to Develop Plans to Support Sale of Plant,Decommissioning & Personnel Retention (← links)
- PNO-I-86-011, on 860201,plant Placed in Commercial Operation. Plant Operating at 99.5% Power.Util Received License to Load Fuel & Conduct Low Power Testing on 841026 & full-power License on 850808 (← 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-97-021, on 970407,RSO Contacted NRC Headquarters Operations Officer About Missing Electron Capture Detector Containing 15 Mci of Ni-63 as Sealed Source.Region I Ofc Contacted Licensee for Addl Info on 970408 (← links)
- PNO-IV-86-006, on 860130,intruder Gained Access to Contaminated Sod Storage Area.Some Contaminated Sod May Have Been Removed from Lawn.Intrusion Reported to Local Police & Guard Posted at Breached Areas Until Fence Repaired (← links)
- PNO-III-85-080, on 850906,licensee Inadvertently Overpressurized Steam Generator 1.Caused by Testing of Auxiliary Feedwater Pump & Partially Open Feedwater Discharge Valve.Licensee Course of Action Monitored (← links)
- PNO-II-85-087, on 850818 & 21,1-1/2 Inch Steam Chest Drain Line Ruptured During Startup Operations After Refueling & Maint Outage.On 850905,main High Pressure Turbine Developed Steam Leak in Steam Chest (← links)
- PNO-IV-86-005, on 860113,emergency Diesel Generator Declared Inoperable Due to Failing Monthly Surveillance Test.On 860116,reactor Shut Down for Outage to Repair Generator. Several Damaged Piston Wrist Pin Bearings Found (← links)
- PNO-II-85-086, on 850826,Natl Weather Svc Upgraded Tropical Storm Elena to Hurricane.Utils Contacted Re Implementation of Hurricane Procedures (← links)
- PNO-III-85-079, on 850907,unidentified Man Telephoned Threat That Bombs Planted Down River from Plant.Police Found No Bomb.Threat Considered Hoax by Licensee.State of Mn Will Be Informed (← links)
- PNO-III-86-003, on 860120,insulating Matl Between Outer Drywell Surface & Concrete Shielding Wall Began to Smolder During Welding.Personnel Evacuated.Area Hosed Down.Licensee Evaluating Consequences of Fire (← links)