Pages that link to "PNO-III-86-078, on 860806,leakage of Approx 144,000 Gallons of Primary Sys Coolant Water from RWCU Sys Into Torus Bldg Sumps Reported.Cause Undetermined.Rwcu Sys Isolated & Leakage Terminated.Investigation Continuing"

The following pages link to PNO-III-86-078, on 860806,leakage of Approx 144,000 Gallons of Primary Sys Coolant Water from RWCU Sys Into Torus Bldg Sumps Reported.Cause Undetermined.Rwcu Sys Isolated & Leakage Terminated.Investigation Continuing:

Displayed 49 items.

• 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)
• PNO-III-80-176, potentially High Press Interest Exists in Results of Institute of Nuclear Power Operations Insp of Station.Summary of Insp Rept Encl ‎ (← links)
• PNO-III-86-032, on 860401,main Control Room Panels for Both Units Found Unbolted.Caused by Improper Installation Per Design Drawings.Panels Being Bolted to Support Beams.Cause of Discrepancy Under Investigation ‎ (← links)
• PNO-III-85-101, on 851214,contractor Employee Found Dead in Reactor Bldg Basement.Caused by Fall of Approx 40 Ft from Exterior of Torus & Striking of Valve During Fall.Grundy County Sheriff Dept & Coroner Notified ‎ (← links)
• PNO-III-97-014, on 970227,employee Exiting Plant Had Set Off Radiation Detector.Employee Hands Found to Have Low Levels of Contamination.Staff from Dresden Plant Interviewed Employee Re Work Activities to Determine Contamination ‎ (← links)
• PNO-III-85-084, on 850919,reactor Scrammed Due to Mechanic Bumping Circuit Board.Reactor Bldg Evacuated Due to Steam Leak & High Radiation Alarms.Four People Slightly Contaminated ‎ (← links)
• ML20151X593 ‎ (← links)
• ML20151X566 ‎ (← links)
• PNO-III-88-046, on 880517,test Performed as Part of Investigation of Dec 1987 Incident in Which Air Line Became Disconnected on One MSIV & Did Not Fully Close.Ait Will Maintain Insp Coverage of Activities Associated W/Msiv ‎ (← links)
• PNO-III-88-053, on 880604,while Unit 3 Was Shutdown for Refueling Outage,Contractor Fire Watch Noticed Smoke Coming from Beneath Welder Working on Struts Being Installed on RWCU Sys Piping Penetration Inside RWCU Pipe Way Pit ‎ (← links)
• PNO-III-89-042, on 890629,unit 1 Turbine Tripped,Causing Reactor Scam.Licensee in Process of Placing Reactor in Cold Shutdown to Repair Degraded Inner Seal on 1B Reactor Circulation Pump Prior to Startup.State of Il Notified ‎ (← links)
• PNO-III-96-066, on 961026,3B Reactor Recirculation Pump motor-generator Tripped.Licensee Determined Recovery of Idle Loop Impossible W/O Plant Shutdown & Began Controlled Shutdown.Independent Insp Safety Team Onsite for Review ‎ (← links)
• PNO-III-86-076, on 860804,isolation Valves in Nitrogen Lines to CRD Accumulators Found Closed.Caused by Mispositioning of Valve.Licensee Investigating Mispositioning to Determine Cause ‎ (← links)
• ML20205A412 (redirect page) ‎ (← links)
• PNO-III-86-078 (redirect page) ‎ (← links)
  • PNO-III-86-078, on 860806,leakage of Approx 144,000 Gallons of Primary Sys Coolant Water from RWCU Sys Into Torus Bldg Sumps Reported.Cause Undetermined.Rwcu Sys Isolated & Leakage Terminated.Investigation Continuing ‎ (← links)
• PNO-III-86-099, on 860917,licensee Shut Reactor Down to Permit Cleaning of Main Condenser.Condenser Tubes Became Partially Blocked by Clams/Clam Shells.Other Maint Work Also Planned.Restart Expected No Earlier than 860919 ‎ (← links)
• PNO-V-86-016, on 860407,State of Wa Informed Region That One Drum in 860403 Radwaste Shipment from Facility Had Hole in Side.Util Barred from Use of Burial Site.Burial Permit 2280 Suspended Effective on 860404 ‎ (← links)
• PNO-III-91-038, w/Dresden Unit 3 in Cold Shutdown & Reactor Defueled,Licensee Experienced Loss of All Unit 3 Annunciators in Control Room.Loss Caused by Blown 3 Amp Fuse.Fuse Replaced & Control Room Annunciators Restored ‎ (← links)
• ML20207G426 ‎ (← links)
• ML20207G397 ‎ (← links)
• PNO-III-87-054, on 870409,unit Manually Shut Down & Scrammed Following Vacuum Problem in Main Condenser & Increasing Temp in Hotwell.Caused by Partially Dislodged Ceiling Embedment Plate Supporting Portion of Lpci.Plate Repaired ‎ (← links)
• PNO-III-86-087, on 860827,plant Shut Down Due to Equipment Problems Resulting in Inoperable HPCI Sys & Train B of Core Spray Sys.Addl Problems Identified During Shutdown.Repairs Underway ‎ (← links)
• PNO-III-87-033, on 870303,shutdown Cooling Sys Pump 3A Declared Inoperable Following Insp Which Showed Degradation of Oil Quality from Upper Bearing Housing.Util Does Not Plan to Resume Reactor Operation Prior to 870304 ‎ (← links)
• PNO-III-87-031, on 870217,loosened Bolt Discovered on Diesel Generator Cooling Pump Flange.Caused by Deliberate Loosening of Bolts.Licensee Increased Security Coverage Pending Completion of Investigation ‎ (← links)
• PNO-III-87-029, on 870126,six of Twelve ROs & SROs Failed Requalification Exam.Operators Who Failed Exam Removed from Licensed Operating Activities ‎ (← links)
• PNO-III-87-105, on 870807,reactor Manually Scrammed.Caused by Variations in Feedwater Flow to Reactor & Leakage from Feedwater Sys.Ndt Performed Small Diameter Feedwater Piping & Other High Stress Areas ‎ (← links)
• ML20249B893 ‎ (← links)
• ML20249B340 ‎ (← links)
• ML20248L074 ‎ (← links)
• ML20236V306 ‎ (← links)
• ML20236U880 ‎ (← links)
• ML20236U528 ‎ (← links)
• ML20236U316 ‎ (← links)
• ML20236U021 ‎ (← links)
• ML20236T963 ‎ (← links)
• ML20236F362 ‎ (← links)
• ML20236F279 ‎ (← links)
• PNO-III-87-127, on 870904,manipulation of Controls by non- Licensed Engineer Occurred.Caused by Personnel Error. Licensee Met W/Licensed Operators & Nuclear Engineers to Review Requirement Policy ‎ (← links)
• PNO-III-87-096, on 870711,reactor Trip Occurred.Caused by Increased Feedwater Flow from 2.2 to 5.6 Million Gallons/H & Closure of All Msivs.Licensee Has No Plans to Operate in Element Control 3 on Feed Sys in the Near Future ‎ (← links)
• PNO-III-87-125, on 870918,both Units Shutdown Due Inability to Maintain Required Pressure Differential Between Secondary Containment & Atmosphere.Licensee Investigating Source of Leakage.State of Il Notified ‎ (← links)
• ML20217B207 ‎ (← links)
• ML20217A585 ‎ (← links)
• PNO-III-87-031A, updates Four Possible Equipment Tampering Incidents at Plant.No Final Conclusions Reached Following Interviews W/About 140 Plant Workers.On 870306,mgt Reacted to Rept of Hoax Explosive Device at Plant.Workers Suspended ‎ (← links)
• PNO-III-92-039A, on 920701,annunciators on Four CR Panels Were Lost About Three Times in Five Seconds.Later During Troubleshooting Efforts,Annunciators Were Again Lost.Cause Was Loose Connection in Copper Link within Fuse Holder ‎ (← links)
• PNO-III-80-169A, since 800905,extensive Investigations by Region 3 & Util Personnel Into Allegations of Radioactive Release Has Not Determined Whether Actual Release of Low Level Radioactive Water Occurred ‎ (← links)
• PNO-III-80-169, on 800904,reporter from Chicago Sun Times Contacted NRC Resident Inspectors Re Allegations That 400,000 Gallons of Radioactive Water Leaked from Station Since Jul 1980 ‎ (← links)
• PNO-III-86-003A, on 860120,inspectors Discovered That Temps Created by Polyurethane Insulation Fire on 860120 May Have Been High Enough to Cause Physical Changes to Portions of Drywell Vessel Metal ‎ (← links)
• PNO-III-85-071A, circuitry Mods to Plant Transformers Completed & Successfully Tested on 850819.Mods Instituted Due to Failure in Switching Mechanism in Auxiliary Main Station Transformer ‎ (← links)
• PNO-III-92-062A, provides Update on 920918 Incident in Which Rod Movement Error Occurred But Not Documented or Reported to Util Mgt.Util Terminated Employment of Four of Five Individuals Involved in Incident ‎ (← links)