Category:PNO

P

• PNO-I-02-017, Susquehanna - Unusual Event Declared Due to Onsite Fire/Explosion within the Protection Area
• PNO-I-02-020, Unusual Event Due to a Hydrogen Gas Ignition in the Off-Gas System (39348)
• PNO-I-02-020, Unusual Event Due to a Hydrogen Gas Ignition in the Off-Gas System 39348)
• PNO-I-03-003, Unusual Event Due to a Safety Injection Signal & Closure of the Main Steam Isolation Valves (39616)
• PNO-I-03-003, Unusual Event Due to a Safety Injection Signal & Closure of the Main Steam Isolation Valves 39616)
• PNO-I-03-004, Millstone Nuclear Power Station, Unit 2, Unusual Events Declared Due to Reactor Trip with Leakage from Charging System (EN Nos. 39644 and 39645)
• PNO-I-03-006, Seabrook Station, Unusual Event Due to a Potential Intruder Inside the Protected Area (39686)
• PNO-I-03-006, Seabrook Station, Unusual Event Due to a Potential Intruder Inside the Protected Area 39686)
• PNO-I-03-013, Reactor Trip from 100% Power Due to a Turbine Trip - Media and Public Interest
• PNO-I-03-014, Unusual Event Declared Due to Fire in the Main Turbine
• PNO-I-03-016, Oyster Creek Bargaining Unit Strike at Oyster Creek (39876)
• PNO-I-03-016, Oyster Creek Bargaining Unit Strike at Oyster Creek 39876)
• PNO-I-03-024, Salem Nuclear Power Plant, Units 1 & 2, Elevated Tritium Levels in Groundwater - New Information
• PNO-I-03-027, Dual Unit Reactor Scram Due to Electrical Grid Disturbance
• PNO-I-04-009, Yankee Atomic Electric Company, Spill of Low-Level Radioactive Waste from Package While in Transit
• PNO-I-04-010, Yankee Atomic Electric Company, Notification of Unusual Event
• PNO-I-04-012, Connecticut Yankee Atomic Power Company, Fire in Vacant Administration Building at Decommissioning Reactor Site
• PNO-I-04-014, Connecticut Yankee Atomic Power Company, Fire Inside Containment Structure at Decommissioning Reactor Site
• PNO-I-05-015A, Update: Hc Shutdown than 72 Hrs to Repair Steam Leak on B Reactor Circulation Loop Pipe Weld Crack
• PNO-I-05-017, Alert Declared at Millstone 3 Due to Main Steam Safety Valve Not Reseating After an SI Actuation on Low Main Steam Line Pressure
• PNO-I-05-018, Haddam Neck Plant, Equipment Fire Inside Containment Structure at Decommissioning Reactor Site
• PNO-I-05-020A, Supplement - Entergys Fitzpatrick Station Shutdown 72 Hrs; Repair Small Crack in Torus Portion of Primary Containment
• PNO-I-05-021, Connecticut Yankee Atomic Power Company, Haddam Neck Plant, Vehicle Accident Involving Spill of Low Level Contaminated Material
• PNO-I-05-022, Alert Declaration at Oyster Creek
• PNO-I-05-026, Hope Creek, Shutdown Expected to Be Greater than 72 Hours to Repair an Inoperable Drywell to Suppression Chamber Vacuum Breaker
• PNO-I-05-028, Connecticut Yankee Atomic Power Company, Haddam Neck Report of Spent Fuel Pool Leak
• PNO-I-06-005, Millstone Unit 2, Shutdown Greater than 72 Hours - Turbine Driven Auxiliary Feedwater Pump Rotating Assembly Degradation
• PNO-I-06-009, Vermont Yankee Unusual Event Due to Indications of Fire in Electrical Switchgear Room
• PNO-I-06-010, Seabrook Power Station, Shutdown Greater than 72 Hours - Both Emergency Diesel Generators Inoperable Due to Problems in the Voltage Regulation Circuitry
• PNO-I-06-011, Peach Bottom, Unit 2, Loss of Containment Integrity Due to Leak in a Test Return Line
• PNO-I-06-012, Oyster Creek, Evaluation of Containment Design Function
• PNO-I-06-014, ; Shutdown Greater than 72 Hours Due to Reactor/Turbine Trip from the Unexpected Closure of Main Turbine Governor and Intercept Valves
• PNO-I-07-001, Notification of Unusual Event (NOUE) Declared Due to Low Water Level in Indian Point Unit 3 Service Water Intake Bay
• PNO-I-07-002, Notification of Unusual Event (NOUE) Declared Due to Fire in Turbine Building Load Center at Peach Bottom, Unit 3
• PNO-I-07-004, Notification of Unusual Event (NOUE) Due to Fire in B Phase Main Power Transformer at Indian Point Unit 3
• PNO-I-07-006, Reactor Scram on Low Reactor Vessel Water Level Due to a Trip of the C Reactor Feed Pump
• PNO-I-07-007, Peach Bottom Alert Declared Due to Carbon Dioxide Discharge in Diesel Generator Building
• PNO-I-07-008, Vermont Yankee, Restoration of West Cooling Towers
• PNO-I-07-009, Nine Mile Point Unit 2, Alert Declared Due to Inadvertent Discharge of Carbon Dioxide Into Electrical Switchgear Room
• PNO-I-08-001, Seabrook, Unplanned Shutdown Greater than 72 Hours
• PNO-I-08-002, Notification of Unusual Event for Ginna Station Due to Loss of Off-Site Land-Line Communications Due to High Winds
• PNO-I-08-003, Limerick, Shutdown Exceeding 72 Hours, 2/11/2008
• PNO-I-08-006, Vermont Yankee Nuclear Power Station, Transfer of Spent Fuel from Spent Fuel Storage Pool to Onsite Independent Spent Fuel Storage Installation (ISFSI)
• PNO-I-08-009, Vermont Yankee Nuclear Power Station Water Leak in a Cooling Tower
• PNO-I-08-009B, Vermont Yankee - Update - Water Leak in a Cooling Tower at Vermont Yankee
• PNO-I-08-010, Hope Creek Generating Station Notification of Unusual Event Due to Indications of Internal Flooding
• PNO-I-08-011, Susquehanna, 10/27/08, Alert Declared Due to High Nitrogen Levels in Unit 2 Safety-Related Pump Room
• PNO-I-08-012, Results of Implementation of Oyster Creek License Renewal Commitments Related to the Drywell Primary Containment
• PNO-I-08-013, Shutdown Greater than 72 Hrs: Automatic Reactor Scram Due to Main Transformer Fault - Oyster Creek
• PNO-I-09-001, Unusual Event and Automatic Reactor Scram Due to a Fire in the M1A Main Transformer at Oyster Creek Station
• PNO-I-09-002, Oyster Creek, Shutdown Greater than 72 Hours: Manual Reactor Scram Following Loss of Cooling to Main Transformer
• PNO-I-09-003, Indian Point Unit 3 Shutdown Due to Feedpump Issues
• PNO-I-09-004, Millstone Unit 2 Reactor Trip and Shutdown Greater than 72 Hours
• PNO-I-09-005, Exelon Generation Co. Llc., Oyster Creek Reactor Trip and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours
• PNO-I-09-006, Three Mile Island Unit 1 - Contamination Event (Update)
• PNO-I-09-007, Millstone Unit 3 Reactor Trip and Shutdown Greater than 72 Hours
• PNO-I-10-001, Calvert Cliffs Dual-Unit Trip Due to Partial Loss of Offsite Power
• PNO-I-10-002, Loss of Normal Communications / Storm Impact Offsite at Vermont Yankee
• PNO-I-10-003, Unusual Event Declarations Due to Seismic Activity (Vermont Yankee and D.C. Cook)
• PNO-I-10-004, Susquehanna Unit 1 Manual Scram and Shutdown Greater than 72 Hours Due to an Internal Flooding Event
• PNO-I-10-005, Susquehanna Alert Due to High Refrigerant Levels in Unit 1 Reactor Bldg
• PNO-I-10-006, Notification of Alert Declared Due to Explosion as a Result of 21 Main Transformer Failure at Indian Point, Unit 2
• PNO-I-11-001, Nine Mile Point Units 1 and 2 Strike
• PNO-I-11-001A, ; Update Nine-Mile Point Units 1 and 2 End of Strike
• PNO-I-11-002, Salem Generating Station Notification of Unusual Event
• PNO-I-11-003, Nine Mile Point Unit 2 Notification of Unusual Event Due to Reactor Coolant System Leak Greater than 10 Gpm and Plant Shutdown Greater than Three Days
• PNO-I-11-004, Nine Mile Point Unit 2 Technical Specification-Required Shutdown Due to an Increase in Unidentifed Reactor Coolant System Leakage
• PNO-I-12-001, Salem Generating Station Inadvertent Safety Injection and Notification of Unusual Event Due to Fire Alarm in Containment
• PNO-I-12-002, Current NRC Actions During Pilgrim Nuclear Power Station Union Contract Negotiations
• PNO-I-12-002A, Update - Current NRC Actions and Status of Pilgrim Nuclear Power Station Union Contract Negotiations
• PNO-I-12-002B, Update - Current NRC Actions and Status of Pilgrim Nuclear Power Station Union Contract Negotiations
• PNO-I-12-002C, Update - Current NRC Actions and Status of Pilgrim Nuclear Power Station Union Contract Negotiations
• PNO-I-12-002D, Update - Current NRC Actions and Status of Pilgrim Nuclear Power Station Union Contract Negotiations
• PNO-I-12-002E, Update - Status of Union Lockout at Pilgrim Nuclear Power Station
• PNO-I-12-002F, Update - Status of Union Lockout at Pilgrim Nuclear Power Station
• PNO-I-12-003, Susquehanna Shutdown Due to RCS Leak
• PNO-I-12-004, Limerick, Unit1, Notification of Unusual Event Declared Due to Electrical Fault in Non-Safety Related Transformer 7-18-2012
• PNO-I-12-005, Oyster Creek Reactor Shutdown and Unusual Event Due to a Loss of Offsite Power and Shutdown Greater than 72 Hours
• PNO-I-12-006, Three Mile Island Shutdown Due to Reactor Coolant System Leak
• PNO-I-12-007, Hurricane Sandy Causes Oyster Creek Alert and Shutdowns of Reactors at Nine Mile Point Unit 1, Indian Point Unit 3, and Salem Unit 1
• PNO-I-12-008, Fitzpatrick Notice of Unusual Event for Fire in Main Transformer
• PNO-I-13-001, Pilgrim Station: Unusual Event Declared Due to Loss of Offsite Power During Winter Storm Nemo
• PNO-I-13-001A, Update: Pilgrim Station: Unusual Event Declared Due to Loss of Offsite Power During Winter Storm Nemo
• PNO-I-13-001B, Update: Pilgrim Station: Unusual Event Declared Due to Loss of Offsite Power During Winter Storm Nemo
• PNO-I-13-001C, Update: Pilgrim Station: Unusual Event Declared Due to Loss of Offsite Power During Winter Storm Nemo
• PNO-I-14-001, Calvert Cliffs Dual Unit Trip Following the Loss of the 21 13kV Bus
• PNO-I-14-002, Millstone Dual Unit Trip with Loss of Offsite Power
• PNO-I-14-003, Millstone, Unit 2. Shutdown Greater than 72 Hours Due to TS-Required Shutdown for the TDAFW
• PNO-I-15-001, Pilgrim: Shutdown Greater than 72 Hours Due to Reactor Scram Following a Partial Loss of Offsite Power
• PNO-I-15-002, A - Update - Indian Point Nuclear Power Station Unit No. 3: Shutdown Greater than 72 Hours Due to Reactor Trip Following 31 Main Transformer Failure
• PNO-I-15-002, Indian Point Nuclear Power Station Unit No. 3: Shutdown Greater than 72 Hours Due to Reactor Trip Following 31 Main Transformer Failure
• PNO-I-15-002A, Update - Indian Point Nuclear Power Station Unit No. 3: Shutdown Greater than 72 Hours Due to Reactor Trip Following 31 Main Transformer Failure
• PNO-I-22-001, Susquehanna Notification of Bankruptcy Filing by Talen Energy Supply
• PNO-I-75-100, on 751003,nonisolable Leak in RCS Identified. Cause Unknown.Insp Will Be Conducted by IE to Review Licensee Investigation & Corrective Actions Re Leaks Prior to Initial Criticality
• PNO-I-79-001, on 790922,stable Natural Circulation Flow Was Lost.Caused by Diminishing Heat Input from Core
• PNO-I-79-002, updating PNO-79-433:on 790920-22,cleanup of Contaminated Soil Outside Restricted Area Was Conducted. Cs-137 & Cs-134 Along w/Co-60 Were Present in Soil.No Other Contamination Was Found
• PNO-I-79-002A, on 7910022,followup Survey Was Performed by Inspector to Verify Cleanup of Unrestricted Area Where Contaminated Soil Was Discovered on 790920.Identified Small Radioactive Area,Approx Two Ft in Diameter.Monitor Planned
• PNO-I-79-004, on 791001,containment Spray Was Inadvertently Initiated When Incorrect Containment Spray Pump Was Started While Attempting to Fill Refueling Cavity.Spray Delivered Borated Water Into Containment.No Contamination Occurred
• PNO-I-79-005, on 791008,licensee Employee Picked Up 7.5 Mci Cs-137 Source Which Separated from Retraction Rod of Moisture Density Gauge.Employee Carried Source in Pocket for 30 Minutes,Receiving 10-15 Rems to Whole Body
• PNO-I-79-006, on 791008,possible Overexposure Occurred to Radiographer & Assistant on Tank Trailer Outside Facility During Radiography Test Using 56 Ci Ir-192 Source Not Fully Retracted Into Device.Estimates 7-14 Rems Exposure
• PNO-I-79-007, on 791016,while Performing 24-h Load Test of 1B Emergency Diesel Generator,Fire Occurred in Turbocharger Exhaust Piping.Diesel Shut Down on Generator Trip.Cause of Trip Unknown
• PNO-I-79-009, on 791017,liquid Waste Holdup Tank 11 Collapsed.Caused by Vent Valve Left Closed During pump-down Process.No Liquid Released from Tank
• PNO-I-79-010, on 791019,anti Nuclear Group Filed Under Endangered Species Act of 1973 Action to Suspend or Revoke Util License on Bases That Two Endangered Fish Were Killed After Being Caught on Util Traveling Screens
• PNO-I-79-011, on 791023,six Workers Overcome by Carbon Dioxide in Diesel Generator Room When Fire Suppression Sys Actuated.Caused by Operator Placing Switch in Automatic. Investigation Continuing
• PNO-I-79-013, on 791026,computer Study Indicated That If LOCA Occurs During Startup Mode,W/Four Main Coolant Pumps Operating,Possibility of Safeguards Bus Voltage Degradation Exists.Interim Corrective Actions Under Review
• PNO-I-79-017, on 791107,began Repair of Steam Generator Feedwater Piping Cracks
• PNO-I-79-018, on 791107,reactor Power Was Reduced to 50% as Result of Observed Axial Power Imbalance & Increased Differential Pressure of 1.7 Psi Across Reactor Core.Caused by Air Introduced Into Reactor Coolant Sys
• PNO-I-79-022, on 791128,const Worker Injured in Fall from Scaffold at Plant Site.Extent of Injuries Unknown.No Radioactive Matl Involved
• PNO-I-79-023, on 791129,operator Discovered Neutralizer Tank Had Overflowed,Resulting in Discharge of 8,400 Gallons of 12.1 Ph Caustic Effluent Into Chesapeake Bay.Caused by Failure of Neutralizer Tank Level Indicator
• PNO-I-79-026, on 791201,minor Primary to Secondary Leak Developed in B Steam Generator.Leak Rate Calculated at 0.007 Gallons/Minute.Plant Commenced Shutdown 791202. Estimate 7-10 Day Shutdown for Repair.Cause Not Stated
• PNO-I-79-027, on 791204,worker Crushed to Death Between Rail Car & Structural Frame on Trailing Floor in Cooling Water Tunnel Under Const.Licensee Investigating Details
• PNO-I-79-028, on 791204,while Reviewing Piping Supports Per IE Bulletin 79-07,three Emergency Generators Found in Degraded Mode.Unit Going to Cold Shutdown for Repair.Press Release Issued to Local Media 791204
• PNO-I-79-028A, on 791205,news Media Attributed Shutdown to Repair of Secondary Plant Steam Valve Packing Gland Leaks & Problem W/Secondary Circulating Water Condensor Cooling Pump.Reconfirms Cause as Diesel Generator Seismic Restraint
• PNO-I-79-030, on 791205,while Disconnecting Dewatering Vacuum Hose,Two Workers Sprayed W/Contaminated Resin Beads.Measured 3,000-3,500 Dpm on One Worker.Worker Decontaminated & Eyes Examined.Dewatering Procedure Will Be Reviewed
• PNO-I-79-032, on 791202,plant Shut Down for Repair of Steam Generator Tube Leakage.During Inservice Insp Detected Linear Indications on Pressurizer Power Operated Relief Valve Nozzle Using Liquid Penetrant Test
• PNO-I-79-033, on 791211,spent Fuel Assembly Was Inadvertently Raised from Storage Position.Radiation Alarms Sounded.Pocket Dosimeter Readings Were Less than 30 Millirems for 12-h Shift.Press Release Issued by Util
• PNO-I-79-034, on 791212,const Worker Suffered Apparent Broken Wrist After Fall from Water Tower
• PNO-I-79-035, on 791213,NRC Contacted by Univ of MD Poison Control Ctr Re Individual Who Became Ill After Contact W/ Toxic Matl at Sharpstown,Md.Region 1 Will Continue to Review Matter to Determine Whether Radiation Was Involved
• PNO-I-79-036, on 791214,reactor Manual Scram Initiated After Momentary Power Loss to Instrument Feeds.Loss Resulted in Turbine/Generation Runback, Bypass Valve Opening & Pressure & Level Instrumentation Instabilities.Cause Not Stated
• PNO-I-79-037, on 791216,estimated 79.3 Ci Xenon & Krypton Released from Stack.Caused by Primary Coolant Venting to Stack Due to Rupture of Relief Disc.Rupture Caused by Boron Recovery Sys Overpressurizing
• PNO-I-79-037B, revises Rept Re 791216 Unplanned Release of 16.3 Ci Noble Gases in 10 Minutes.Tech Spec Instantaneous Release Rate Exceeded by Factor of 5 Instead of 1.4.Environ Samples Taken & TLDs Placed for Monitoring
• PNO-I-79-038, on 791217,new Unirradiated Fuel Assembly Dropped While Being Transferred to Storage Location in Spent Fuel Pool.Caused by Assembly Bouncing Off Top Edge of Fuel Rack & Failure to Latch Device on Auxiliary Hook
• PNO-I-79-039, on 791218,two Former Employees of Const Contractors Made Statements That Welding & Concrete Work Improperly Performed.Region 1 Conducting Investigation of Allegations
• PNO-I-79-040, on 791218,contractor Painter Fell from Ladder in Reactor Bldg & Sprained Ankle.Painter Was Treated & Released from Hosp.No Radiation or Contamination Involved
• PNO-I-79-041, on 791220,approx 1,000 Fish Were Collected After Being Backwashed from Traveling Screens.Situation Being Evaluated by Biologist from Corp Ofc.Cause Not Stated
• PNO-I-79-042, on 791220,chemical & Vol Control Sys Holdup Tank 12 Partially Collapsed.Caused by Vacuum Forming in Tank Due to Vent Piping Being Filled W/Overflow Water from Tank 11 Causing Ineffective Venting While Tank 12 Was Emptied
• PNO-I-79-043, on 791221,individual Identified as Licensee Engineer Stated That Seismic Restraints for Isolation Condensers Would Not Withstand Operational Transient Based on Analysis
• PNO-I-79-044, on 791221,contractor Worker Received Cut on Back of Head.Caused by Worker Slipping While Climbing Ladder W/Safety Belt Disconnected & Falling on Grating.No Contamination of Worker Detected
• PNO-I-79-045, b on 791228,Region 1 Requested Licensee Assure That Radiation Level of 1 Rem/Hour Under Trailer Bed Be Reduced to Less than 200 Millirem/Hour Prior to Release from Depot
• PNO-I-79-045A, on 791227,insp at Tri-State Trucking Co Depot in Joplin,Mo Verified Radiation Level Exceeded 300 Millirem Per Hour at One Location on Trailer Surface Holding 80 Drums of Matl to Be Shipped to Vendor in Tuxedo,Ny
• PNO-I-79-047, on 791229,while Operating at 100% Power,All Control Room Annuciator Panels Lost.Caused by Failed Dc Power Supplies to Annunciator Circuits.Power Supplies Replaced
• PNO-I-80-001, on 800104,isolation Condenser Isolated.Addl Insps of Containment Wall in Progress.Power Operation Will Continue Per Tech Specs for 15 Days.Precedures Require Power Be Reduced to 40% 24-h After Removing Condenser from Svc
• PNO-I-80-002, on 800223,observed Two Individuals Climb Protected Area Barrier Fence on East Side of Site. Individuals Eluded Security Force Surveillance.All Onsite Personnel Identified
• PNO-I-80-004, evaluation Disclosed Automatic Depressurization Sys Nitrogen Supply Not Seismically Qualified Outside & Possibly Unqualified Drywell.Nss Vendor Issuing Ltr & 10CFR21 Considerations Being Evaluated
• PNO-I-80-005, on 800111,truck Carrying Two 5-gallon Containers & Seven 55-gallon Drums of Radwaste Was Involved in Accident on Route 9 in Montrose,Ny.No Leakage Occurred
• PNO-I-80-006, on 800114,Gateway Transport Truck Containing Radioactive Cobalt Was Involved in Accident on Interstate 80.Insp of Container Revealed No Radioactive Leakage
• PNO-I-80-006A, on 800114,radioactive Matl Damaged in Truck Accident Was Inspected by Commonwealth of PA Representative & Found to Be Intact
• PNO-I-80-007, on 800114,one of Two Gas Steam Generating Boilers Was Damaged When fire-box Exploded.Licensee Had Just Finished Testing Boiler.Licensee Currently Assessing Damage.No Radioactive Matl Involved.No Personal Injury
• PNO-I-80-008, on 800116,crack in Core Spray Sparger Piping Discovered During Routine Inservice Insp Conducted Per Refueling Outage.Crack Located Inside Reactor Shroud. Investigation Underway.Extension of Outage Anticipated
• PNO-I-80-010, on 800117,General Public Utils Announced Proposed Reorganization W/All Nuclear Operations Under Direction of Gpu Nuclear Corp.R Arnold Will Serve as President.Mgt of PA Utils Will Be Combined
• PNO-I-80-011, on 800117,during Routine surveillance,tell-tale Spent Fuel Pool Liner Leak Indicator Observed Dripping from Spent Fuel Pool.Investigating to Locate & Correct Leak
• PNO-I-80-012, on 800118,licensee Radiation Safety Officer Reported That TLD Badges Worn by Employee During Fourth Quarter 1979 Read Between 21.9 & 24.9 Rems.Possibly Caused by Badges Left W/Shirt in Irradiator Cell
• PNO-I-80-013, on 800122,local Boilermaker Union Formed Picket Line to Protest Not Being Awarded Contract to Retube Plant Main Condenser.Grievance Resulted in Slashed Tires & Threat to Maint Supervisor.Alternative Entrance Opened
• PNO-I-80-016, on 800625,watchman Observed Individual Inside Protected Area.Search Was Completed W/No Suspect Identified
• PNO-I-80-018, on 800129,Level II Inservice Insp During Refueling Outage Indicated through-wall Cracks in Pipe Base Matl of Core Spray Spargers.Licensee to Meet W/Ge for Evaluation & Development of Corrective Action Plan
• PNO-I-80-018A, on 800326,AMS-3 Local Air Monitor Showed Intermittent Increase in Count Rate.Monitor Alarmed, Indicating Slight Increase in Airborne Particulate Concentration in Auxiliary Bldg.Monitor Filter Changed
• PNO-I-80-021, on 800119,timers Which Operate Accumulator Nitrogen Valves Failed to Operate.Caused by Polarity Sensitivity of Relays.Signal Leads Were Reversed & Timers Worked Properly
• PNO-I-80-022, on 800205,contractor Employee Fell Into Spent Fuel Pool.Caused by Blow to Head.No Overexposure Occured & No Water Was Ingested.Counts Indicate 0.078 Uci Fixed Skin Contamination.Media Coverage Evident
• PNO-I-80-024, on 800210,facility Lost Incoming 345 Kv Transmission Line.Caused by External Power Sys Problems.Core Defueled & Spent Fuel Pool Temp Remained Relatively Constant During Event
• PNO-I-80-025, on 800211,auxiliary Bldg Evacuated Upon Receipt of Gaseous Radiation,Waste Processing & Main Vent Alarms. Ion Exchanger Outlet Valve Found Not Fully Shut Resulting in Pressurization & backed-up Radioactive Water
• PNO-I-80-025A, on 800211,40.5 Ci Xe-133 Released Representing 37% Tech Spec for Instantaneous Release.On 800212 Local Emergency Declared in Auxiliary Bldg Again Due to Ion Exchanger.No Release Evident
• PNO-I-80-026, on 800125,27 & 0213,pinhole Leaks Found in Transfer Pipe from Condensate Storage Tank During Insp of Pipe.Contaminated Soil Was Removed & Pipe Replaced.Media Interest Expected
• PNO-I-80-027, on 800214,reactor Tripped Due to Low Water Level in Steam Generator 14 Coincident W/Steam Flow/Feed Mismatch.Caused by Control Mechanism Failure for Feedwater Regulating Valve
• PNO-I-80-028, on 800214,during Plant Startup W/Turbine at Rated Speed But Not Tied to Grid,Loud Noise Was Heard in Low Pressure Turbine Accompainied by Excessive Vibration. Turbine Coasted to Stop & Could Not Be Rotated
• PNO-I-80-029, on 800215,unplanned Release of Radioactive Gas Occurred.Release Took Place While Personnel Were Returned Hydrogen Analyzer in Off Gas Recombiner Sys to Svc.Two Persons Received Exposure Over 100 Millirem
• PNO-I-80-030, on 800218,while Refueling Core W/Pool Clarity & W/Approx 1/3 Core in Place,Problems Experienced in Seating Assembly.Assembly Placed in Core Improperly & Tilted Over. Area Evacuated
• PNO-I-80-031, on 800131,licensee Identified Nine Fuel Assemblies Containing Leaking Fuel Pins.At Least Two Pins Appeared to Have Missing Segments.Cause Not Stated.Damaged Fuel Assemblies Being Replaced
• PNO-I-80-033, on800226,reactor Tripped Due to Turbine Generator Fault.No Radioactivity Released.While Unit Is Down,Licensee Plans to Inspect Low Pressure Turbine & Add Weight to Correct Vibration Problem
• PNO-I-80-034, on 800302,two Individuals Showed Significant Whole Body Counts of Co-60.Licensee Review Indicated Exposure Occurred While Wiping Down Control Rod Blade Tool W/No Respiratory Protection
• PNO-I-80-034A, on 800302,two Individuals Were Exposed to Co-60.Deposition Calculated in Lungs & Lower Large Intestine within Allowable Quarterly & Lifetime Limits.No Future Action Anticipated
• PNO-I-80-041, on 800313,radiological Surveys of Site Grounds Uncovered Three Small Patches of Contaminated Soil Outside Controlled Area.Approx Three Tablespoons Soil Removed.Survey Continuing to Determine If Other Areas Contaminated
• PNO-I-80-042, on 800317,notified by Several Sources That Radioactive Matl Package Containing 13.8 Ci Ir-192 Source in Radiographic Device Dropped at Philadelphia Airport Was Leaking.Nonradioactive Insulating Matl Spilled Out
• PNO-I-80-043, on 800318,one Truck Full of Chlorine Rail Tank Car Derailed at Broken Switch on Licensee Property.Car Presently Located Outside Protected Area,But Is Upright, Intact, & Stable.Formulating Plans to Replace Car on Rail
• PNO-I-80-044, on 800318,call Received from Individual in Belmont,Ma Re Retrieval of Gamma Sample Charger from Trash Compactor in Winchester,Ma.Unlabelled Sealed Source Reading 11 Mrem/Hr Found.Little Radiation Exposure Occurred
• PNO-I-80-047, on 800326,PA Electric Co Test Engineer Fell Six Feet from Radwaste Demineralizer Into Surrounding Pit. Anti-Cs Contaminated to 1000 Dpm.Due to Nature of Injuries, Man Transported to Hosp W/O Cleanup or Anti-C Removal
• PNO-I-80-049, on 800327,plant Tripped from 100% Power & ECCS & Containment Isolation Occured.Exact Cause Unknown.Appears to Have Occurred from False ECCS Actuation Signal.Plant in Hot Standby W/Decay Heat Removal in Progress
• PNO-I-80-051, on 800328,licensee Reported That Core Spray Sys Sparger Insp Found 28 New Cracks.Proposed Repairs Include Installation of Clamps
• PNO-I-80-052, on 800331,Region 1 Was Notified by Info Technology,Inc of Receipt of Vial Labeled Xe-133.Vial Had Been Included in Shipment from Licensee.Vial Was Shielded. Only Background Levels of Radiation Measured at Surface
• PNO-I-80-053, on 800401 Striking Laborers Extended Picket Lines to Cover All Plant Entrances.Union Personnel Honored Picket Line.On 800402 Only Contractor Gate Picketed.Only Personnel on Shift for Less than 12-h Were Moving Fuel
• PNO-I-80-054, on 800402,plant Tripped from Full Power Due to Ground in Reactor Protective Sys.Ground Will Be Repaired & Plant Returned to Svc
• PNO-I-80-055, on 790404,eight Thousand Gallons of Fuel Oil Spilled in Chesapeake Bay.Cleanup Activities Are Taking Place & No Further Action by IE Anticipated
• PNO-I-80-057, on 800410,while Drum Was Being Loaded for Offsite Shipment,Small Spill of Reactor Water Cleanup Sys Resin Occurred.Caused by Worker Attempting to Straighten Cocked Lid on Drum.Cleanup Completed & Area Decontaminated
• PNO-I-80-058, on 800411,small Leak Discovered in Valve Body on Line Between Torus & Torus Water Storage Tank.Licensee Placed Container Under Valve to Collect Leakage.Water Contained Approx 850 Ppm Potassium Chromate.Valve Replaced
• PNO-I-80-060, on 800417,Bechtel Advised Util That IE Bulletin 79-01B Pipe Break Analysis for HPCI Turbine Steam Supply Line Showed That Guillotine Break in Either Valve Isolation Rooms Adjacent to Drywell Would Overpressurize Room
• PNO-I-80-061, on 800421,fire Detected in Turbine Bldg.Caused by Lube Oil Leaking from Main Turbine Driven Feedwater Pump. Plant Fire Brigade Extinguished Fire
• PNO-I-80-062, on 800418,leakage Flow Path to Ohio River Was Found to Have Existed Past Shut But Leaking Valves.Inventory Showed Total Loss Less than 4,000 Gallons from Flow of 1-2 Gallons Per Minute
• PNO-I-80-063, on 800417,contract Guard Svc Employee Was Shot in Foot When Revolver Accidentally Discharged During Supervised Range Practice.Guard Trainee Admitted for Treatment to Hosp & Released
• PNO-I-80-064, on 800424,util Notified NRC That 10% company- Wide Reduction in Work Force Is Being Considered.Cause Not Stated.Various Options Will Be Discussed Prior to Implementation
• PNO-I-80-065, on 800425,plant Employee Left Work Station to See Nurse About Injury.Employee Was Later Found Asleep in Car After Checks to Locate Whereabouts.Individual Was Fired But Refused to Leave Site & Had to Be Escorted
• PNO-I-80-066, on 800425,State of PA Notified Region 1 That Gauge Containing Radioactive Matl Was Found Outside Licensed Custody.Insp Is Planned
• PNO-I-80-067, on 800426,one Package Marked Radioactive Matls Was Found on Us Route 202 in King of Prussia,Pa.Region 1 Took Custody of Package Which Showed No Damage or Leakage. Press Release Not Planned.State of PA Informed
• PNO-I-80-068, on 800501,four Plant Workers Were Taken by Ambulance to Local Hosp for Observation After Becoming Nauseous While Using Isopentyl Alcohol.Caused by Attempt to Decontaminate Spent Fuel Shipping Cask
• PNO-I-80-069, on 800501,secondary Containment Integrity Was Broken.On 800502,fuel Bundle in Spent Fuel Pool Was Removed for Insp,Violating Tech Specs.No Release Was Involved.Fuel Motion Was Secured & Refueling Bridge Locked
• PNO-I-80-070, on 800504,release of Gaseous Radioactivity Occurred During Transfer of Ion Exchange Resin.Caused by High Differential Pressure Causing Bypass of Filter. Licensee Will Terminate Resin Transfers
• PNO-I-80-071, on 800505,significant Number of Security Force Personnel,Contracted from Interstate Security Svcs,Inc,Began Taking Leave at Start of mid-shift.Security Supervisors Working 12-h Shifts Will Maintain Full Coverage
• PNO-I-80-072, on 800505,during Performance of 24-h Sustained full-load Operation Test of Emergency Diesel Generator, Field Exciter Transformer Ruptured.Imbalance of Current Started Fire.Power Was Cut & Fire Extinguished
• PNO-I-80-074, on 800508,unit Shut Down Because Ae Reported Svc Water Sys Piping Intake Structure Not Adequately Supported for Dbe.Existing Pipe Supports Are Scheduled to Be Modified
• PNO-I-80-075, on 800508,Mclean Trucking Co Truck,Carrying Two Ohmart Density Gauge Source Holders Containing Cs-137, Experienced Load Shift Which Twisted Trailer Body Off Frame. Radioactive Matl Leakage Not Detectable
• PNO-I-80-076, on 800513,licensee Reported Release Rate Was 130% of Tech Spec Limit.Release Evolved from Surface of Refueling Cavity Water.Release Was Terminated by Operating Standby Gas Treatment Sys
• PNO-I-80-077, on 800508,inspector Identified Two Possible Overexposures Which Licensee Failed to Recognize.Special Insp to Review Exposures Will Be Conducted on 800515-16
• PNO-I-80-078, on 800515,NRC Was Notified That Chem-Nuclear Tractor Trailer Hauling Low Specific Activity Radwaste Broke Down.Tractor Engine Determined Irreparable.No Loss of Contents or Radiological Problems Identified
• PNO-I-80-079, on 800501,I-125 Seed Apparently Ruptured While Being Implanted for Interstitial Treatment of Cancer. Mechanical Difficulties Encountered W/Delivery Sys. Thyroid Monitoring & Urinalysis Account for 250 Mci
• PNO-I-80-080, on 800519,NRC Was Informed That Apr Film Badge Issued to One Radiographer Showed Dose of Four Rems.Licensee Conducting Investigation
• PNO-I-80-081, on 800520,auxiliary Feedwater Sys Used to Remove Reactor Decay Heat Loads.Operator Reported That Suction Pressure on Auxiliary Feed Pumps Was Reading Zero
• PNO-I-80-081A, on 800520,manual Reactor Trip Was Initiated Because of High Turbine Bearing Temp Resulting from Loss of Both Svc Water Sys.Licensee Procedures Have Been Modified to Require Addl Checking
• PNO-I-80-082, on 800521,one Worker Received 2-inch Contaminated Cut Measured at 80 Counts Per Minute.Worker Treated Medically.State of Nj Notified.No Press Releases Planned
• PNO-I-80-083, on 800523,woman Security Guard Passed Out While Resting in Guard House During Break.Ambulance Called Immediately to Transport Patient to Offsite Hosp for Observation
• PNO-I-80-086, on 800602,utils Informed NRC of Tornado Watch in Vicinity of Plants.Forecast Included Potential for Severe Thunderstorms,Large Hail & Damaging Winds.Licensees Implemented Emergency Procedures
• PNO-I-80-087, on 800530,two Failed Flexible Couplings on Turbine Drain Extraction Steam Line Caused Unscheduled Extended Outage.Debris from Bellows Damaged at Least Three Other Lines & Some Internal Baffles in Condensor
• PNO-I-80-090, on 800610,licensee Reported Possible Whole Body Radiation Exposure of 3.118 Rem of Contractor Employee During 2nd Quarter of 1980.Dosimeter Found Offscale & Worker Actually Received Addl 1.524 Rem on 800609