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| Issue date | Title | Topic | |
|---|---|---|---|
| ML18106B044 | 29 January 1999 | Part 21 Rept Re Possible Defect in Swagelok Pipe Fitting Tee Part Number SS-6-T.Caused by Crack in Center of Forging. Continuing Analysis of Part & Will Provide Details in Acoordance with NRC Timetables | |
| ML18106B055 | 1 February 1999 | Part 21 Rept Re Possible Matl Defect in Swagelok Pipe Fitting Tee,Part Number SS-6-T.Defect Is Crack in Center of Forging.Analysis of Part Is Continuing & Further Details Will Be Provided IAW Ncr Timetables.Drawing of Part,Encl | |
| ML18106B093 | 25 February 1999 | Part 21 Rept Re Possible Defect in Swagelok Pipe Fitting Tee,Part Number SS-6-T.Caused by Crack Due to Improper Location of Heated Bar.Only One Part Out of 7396 Pieces in Forging Lot Was Found to Be Cracked.Affected Util,Notified | |
| ML18107A344 | 1 June 1999 | Interim Part 21 Rept Re Premature Over Voltage Protection Actuation in Circuit Specific Application in Dc Power Supply.Testing & Evaluation Activities Will Be Completed on 990716 | |
| ML18114A694 | 14 June 1979 | Failure of Solenoid Operated Valves to Meet IE Bulletin 79-01 Environ Qualification Requirements.Environmentally Unqualified Valves Have Been or Will Be Replaced | |
| ML18139A873 | 19 November 1980 | Part 21 Rept Re S&W Notification That out-of-phase Transfer Might Occur When Emergency Buses Are Transferred from Offsite Power Source to Emergency Diesel Generators After Reaching Rated Speed & Voltage.Originally Reported 801114 | |
| ML18153A143 | 10 June 1997 | Part 21 Rept Re Possible Machining Defect in Certain Stainless Steel Swagelok Tube Fitting Bodies.Facilities Have Been Notified About Possible Problem | |
| ML18153B060 | 2 September 1994 | Initial Part 21 Rept Re Steam Drive AFW Pump Governor Valve Mfg by Dresser-Rand.Maint Procedure to Stroke Governor Valve Stem Performed Weekly & Monitoring of Corrosion Build Up in Gland Seal Leakoff Area Performed Weekly | |
| ML18153B084 | 26 September 1994 | Suppl to 940902 Initial Part 21 Rept Re Defect W/Governor Valves Used in turbine-driven Pumps Mfg by Dresser-Rand to Formally Addresss Written 30 Day Rept Requirement of 10CFR21(c)(3)(ii) | |
| ML18153C101 | 2 February 1990 | Part 21 Rept Re Two of Three Pc Cards in GE Type SLV11A1 Over/Undervoltage Relays Failing to Produce Output.Short Between Leads Would Result in Damage to Component 1C5. Sketch of Threshold Detection Board Encl | |
| ML18153D081 | 3 August 1992 | Interim Part 21 Rept Re Analysis of Klockner-Moeller Model NZM6-63,480 Volt Circuit Breakers.Initially Reported on 920701.Lever Fracture Should Be Examined to Determine If Any Cleaning Sprays or Purifying Agents Have Been Used | |
| ML19208A713 | 11 September 1979 | Final Rept Re Flexible Bellows Penetrations of Steel Containment Vessel Misaligned During Installation.Caused by Faulty Installation Sequence.Bellows Reinstalled.Technical Supervisor Appointed to Monitor Further Installation | Safe Shutdown |
| ML19208B199 | 11 September 1979 | First Interim Deficiency Rept Re Ice Condenser Heat Loads Exceeding Design Heat Loads.Could Cause Degradation of Ice in Ice Condenser & Invalidate Safety Analyses.Reasons for Necessity to Operate Four Glycol Chillers Being Studied | |
| ML19208B230 | 31 August 1979 | Deficiency Rept:On 790828,review Indicated Feeder Breaker Trip Curves to Some Penetrations Not Coordinated W/Penetration Limits.Settings for Proper Penetration Protection Limits Are Being Revised | |
| ML19208B262 | 29 August 1979 | Deficiency Rept:Radiographic Tests Detected Foreign Matls on Feedwater Sys,Line 16 Inches WFPD-424-601-Q2 & 02,welds FW-18,FW-5A,SW-27 & SW-28.Foreign Matl Removed & No Further Rejectable Indications Detected | |
| ML19208B268 | 4 September 1979 | First Interim Deficiency Rept Re Temp Changes in RCS Which Exceeded Max Heatup & Cooldown Rates.Corrective Action Will Be Taken After Westinghouse Evaluation Is Reviewed by Util | |
| ML19208B289 | 12 September 1979 | Second Interim Deficiency Rept Re Penn Ventilator Co QA Program. Penn Was Not Implementing QA Manual Approved for Use. Util Will Review Drawings & Seismic & Environ Qualification Documentation for Spec Compliance | |
| ML19208B294 | 13 September 1979 | Deficiency Rept Re Failure to Install Cable Gutters Indicated on Design Drawings.Affected Cables Will Be Encl in Metal Wireway Before Unit 1 Fuel Loading Date | Safe Shutdown |
| ML19208C420 | 20 September 1979 | Second Interim Deficiency Rept Re Delay of Reactor Trip Caused by Arcing Across Under Frequency Relay Contacts. Possibility of Installing Diodes Across Auxiliary Relay Coil Terminals Is Under Investigation | |
| ML19208C441 | 14 September 1979 | Deficiency Rept Re Emergency Diesel Generator Fan Cooling Sys Which Appears to Be Inadequately Designed.Alternatives Presented at 790911-12 Meeting of S&W,Vepco & Colt Industries Currently Being Evaluated to Determine Solution | |
| ML19209A533 | 26 September 1979 | First Interim Deficiency Rept Re Excessive Output Fluctuations of Foxboro Instrumentation.Corrective Action May Involve Mod to Instruments to Comply W/Specs.Next Rept Will Be Submitted Before Fuel Loading in Unit 1 | |
| ML19209A544 | 26 September 1979 | First Interim Deficiency Rept Re Diesel Generator Field Relay Coil K1 Failures.Coils Replaced & Generators Returned to Svc.Addl Corrective Actions Will Be Detailed in Subsequent Deficiency Rept | |
| ML19209B700 | 28 September 1979 | Third Interim Deficiency Rept Re Reactor Vessel Insulation. Westinghouse Investigated Problem & Provided Response to Tva.Will Submit Next Rept Before Fuel Loading | |
| ML19209B720 | 4 October 1979 | Interim Deficiency Rept Re Overpressurization of Containment from Main Steam Line Break Inside Containment. Util Evaluating Mods to Limit Auxiliary Feedwater Flow to Affected Steam Generator | |
| ML19209C425 | 21 September 1979 | Final Deficiency Rept Re Failure of Barton Narrow Range Steam Generator Level Transmitter to Meet Acceptance Criteria for Accuracy.Transmitters Returned to Barton Co to Be Checked & Modified within Specs | |
| ML19209C441 | 4 October 1979 | Final Deficiency Rept Re Diesel Generator Turbocharger Lubrication Problem.Caused by Defect in Soakback Pump. Operating Instructions for Diesel Generators Revised & Lubricating Oil Sys Will Be Modified | |
| ML19209C448 | 25 September 1979 | Deficiency Rept:On 790920,oil Leakage from Motor Housing Revealed Defect in Casting for Lower Reservoir of Shaft End Bearing on Motor 3AF-P2A.Insp of Three Similar Motors Shows Possible Defect in Unit 4 Motors.Onsite Insp Scheduled | |
| ML19209C897 | 3 October 1979 | Final Deficiency Rept Re Crack in Valve Disc of Valve MOV-2380.Replacement Disc Will Be Installed | |
| ML19209D091 | 5 October 1979 | Second Interim Deficiency Rept Re Accelerated Heating & Cooling of Small Local Regions of Loop 2 Hot Leg & Pressurizer.Safe Operation of Facility During Startup Will Not Be Jeopardized.Next Rept Will Be Submitted by 791210 | |
| ML19209D098 | 27 September 1979 | Interim Deficiency Rept Re Inadequate Range of Fault Current Protection on Some Containment Electrical Power Penetrations.Final Rept Will Be Submitted When Work on Circuit Mods Complete | |
| ML19209D130 | 28 September 1979 | Third Interim Deficiency Rept Re Reactor Vessel Insulation. Westinghouse Has Investigated Problem & Provided Response to Util.Next Rept Will Be Submitted Before Fuel Load | |
| ML19209D185 | 10 October 1979 | Interim 30-day Deficiency Rept Re Emergency Diesel Generator Fan Cooling Sys.Final Rept Will Be Submitted When Manufacturer Design Mod Implemented | |
| ML19210D111 | 26 October 1979 | Potential Significant Deficiency Re Exposed Area in Control Cable.Partially Exposed Wire Discovered in Area of Insulation Splice in Control Cable Bundle.Faulty Splice Removed | |
| ML19210D119 | 29 October 1979 | Interim Deficiency Rept Re Defect in One Conductor of 12- Conductor,Number 14,Class IE Cable.Vendor Informed & Will Inspect Two Reels of Cable Sent to Util.Addl Info Forthcoming in 30-day Rept | |
| ML19210D168 | 25 October 1979 | Final Deficiency Rept Re Essential Raw Cooling Water Sys Isolation Valves Not Seismically Qualified.Caused by Misinterpretation of Spec Requirements on Seismic Qualification.Valve Operator Supports Redesigned | |
| ML19210D317 | 19 November 1979 | Second Interim Deficiency Rept Re Ice Condenser Heat Loads Exceeding Design Heat Loads on 790911.Addl Cooling Capacity Required to Maintain Design Temps in Ice Condensers.Addl Glycol Chilling Capacity Will Be Procured | |
| ML19210D692 | 9 November 1979 | Deficiency Rept Re Pipe Stress Analysis for safety-related Sys Showing Nonconservative Pipe Stresses.S&W Will Reanalyze All Isometric Pipe Drawings Affected & Mods Will Be Made as Required | |
| ML19210D914 | 19 November 1979 | Final Deficiency Rept Re Penn Ventilator Co QA Program. Initiated Insp of Equipment to Ensure That Equipment Corresponded to Supplied Documentation | |
| ML19210E333 | 29 November 1979 | Supplements 780818 Final Deficiency Rept Re Pump Suction & Unstable Flow.Pump Suction Mods Acceptable | |
| ML19210E392 | 30 November 1979 | Interim Deficiency Rept on Safeguards Area Exhaust Sys. Evaluation Revealed Only Safeguards & Central Area Exhaust Sys Must Be Operational After Seismic Event.Final Rept Forthcoming | |
| ML19210E684 | 23 November 1979 | First Interim Deficiency Rept Re Damaged Tubes in Containment Spray Heat Exchanger.Caused by Improper Design of Tube Bundle Supports,Resulting in Flow Induced Vibration. Full Flow Vibration Test Scheduled | Flow Induced Vibration |
| ML19210F038 | 21 November 1979 | Interim Deficiency Rept Re Containment Depressurization Actuation & Safety Injection Actuation Circuitry.Safety Circuits Being Redesigned to Comply W/Fsar Commitments | |
| ML19211B728 | 14 September 1979 | Suppl to 790910 Deficiency Rept Re Design Inadequacy in Emergency Diesel Generator Fan Cooling Sys.Ambient Temp Ranges Exceed Capability of Fan Cooling Sys.Alternate Solutions Under Evaluation | |
| ML19211C792 | 14 December 1979 | Final Deficiency Rept Re Containment Depressurization Actuation & Safety Injection Actuation Circuitry.Pump Circuits Modified for Pumps to Continue Through Timing Sequence Until Reset or Lock.Pumps Restart Automatically | |
| ML19211C794 | 18 December 1979 | Supplemental Response to Two 790615 & 0831 Deficeincy Repts Re Cable Terminations in Junction Boxes Inside Containment. Terminations Preferable to Splices for Resistance Temp Detectors;Coated W/Dow Corning Silicon | Safe Shutdown |
| ML19224C271 | 7 May 1979 | Notification of Failure to Meet Environ Qualification for IE-class Equipment Stipulated in IE Bulletin 79-01 | |
| ML19225C816 | 3 July 1979 | Final Deficiency Rept Re Essential Raw Cooling Water Valve Positioning.Automatic Opening Signals to Essential Raw Cooling Water Valve Will Be Removed Before Initial Criticality of Unit 1 | Safe Shutdown |
| ML19241A712 | 22 June 1979 | Final Deficiency Rept:Pipe Support 1-RCH-93 Failed to Slide During Hot Functional Testing.Caused by Failure to Lubricate Sliding Surfaces,Resulting in Plastic Deformation of Piping. Pipe Support Redesigned | |
| ML19241A771 | 21 June 1979 | First Interim Deficiency Rept Re Lack of Design Considerations of Sum of Static,Thermal & SSE Deflections for Rigid & Variable Spring Pipe Supports.Potentially Deficient Piping Supports Reviewed | Safe Shutdown Earthquake |
| ML19242A496 | 5 July 1979 | Final Deficiency Rept Re Incorrect Orifice Size of Seal Water Injection Flow Elements Initially Reported 790607. Caused by Misinterpreted Drawings from Westinghouse.Correct Orifices Will Be Installed & Seal Injection Flow Rebalanced |