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| Issue date | Title | Topic | |
|---|---|---|---|
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| ML19224C271 | 7 May 1979 | Notification of Failure to Meet Environ Qualification for IE-class Equipment Stipulated in IE Bulletin 79-01 | |
| ML19249D827 | 18 September 1979 | Final Deficiency Rept Re Ultrasonic Examination of Ions Indications Found on Weld SW-27 on 16-inch WFPD-424-601-q2. No Rejectable Indications Found & No Repair Work Required | |
| ML19249E799 | 27 September 1979 | Updates 790828 Rept Re Inadequate Range of Fault Current Protection on Some Containment Electrical Power Penetrations.Review of All Related Power Circuits Completed, W/Appropriate Mods Determined.Mods in Progress | |
| ML19250A482 | 19 October 1979 | Interim Rept Re Auxiliary Feedwater Pump Motor Casting Defect.Vendor Informed Util That Castings Will Be Completely Evaluated & Problem Corrected to Meet Category I Sys Use Requirements | |
| ML19250B828 | 24 October 1979 | Final Deficiency Rept Re Interaction Between nonsafety- & safety-grade Equipment.Provides Info on Control Sys,Re Specific Concerns of IE Info Notice 79-22.No Significant Safety Concern Exists | |
| ML19250C453 | 19 November 1979 | Final Deficiency Rept:On 791114,during Testing of Logic Circuitry in Solid State Protection sys,P-4 Input Not Tested.Verification of P-4 Will Be Incorporated Into Test Procedures for Solid State Protection Sys | |
| ML19253B365 | 10 October 1979 | Interim Deficiency Rept Re Emergency Diesel Generator Fan Cooling Sys.During Review of Equipment Specs Ambient Temp Ranges Found Exceeding Original Design Limits.Manufacturer Engineered Mod Allowing Operation W/O Overloading Fan | |
| ML19254F245 | 17 October 1979 | Final Deficiency Rept Re Emergency Diesel Generator 2H Cylinder Exhaust Temps Which Exceeded Max Temp of 1,100 F During 24-h Test.Caused by Insulation Matl in Air Intake Sys.Matl Removed & Units Tested Satisfactorily | |
| ML19254F263 | 7 September 1979 | Interim Deficiency Rept Re Overpressurization of Containment from Main Steam Line Break.Util,B&W & S&W Investigating Mods to Auxiliary Feedwater Sys to Limit Flow to Broken Steam Generator in Event of Main Steam Line Break | |
| ML19256F641 | 4 December 1979 | Interim Deficiency Rept Re Seismic Response Spectrum Curves in Pipe Stress Analyses.Three Inconsistencies Discovered in Amplified Response Spectrum Curves Used as Input Data to Pipe Stress Analyses.Analyses Rerun Using Proper Input | |
| ML19256F642 | 28 November 1979 | Submits Part 21 Rept Re Potential Nonconservative Feature of Westinghouse Large Break LOCA-ECCS Evaluation Model. Defect Could Affect Peak Clad Temp Calculated for LOCA Transient.Analysis Will Be Completed by Early Dec 1979 | |
| ML19256G244 | 20 December 1979 | Interim Deficiency Rept Concerning Significant Breakdown in QC Program Re Verification of Calibr of Forney Compression Testing Machine.Attempting to Calibr Forney Compression Testing Machine in Range of 0 to 25,000 Lbs | |
| ML19257A294 | 11 December 1979 | Provides Addl Info Re Deficiency Discovered on 791207 Concerning Potential Nonconservative Feature of Large Break LOCA-ECCS Evaluation Model.Reanalysis Performed Using Heatup Rate Dependent Rod Burst Calculation Procedure | |
| ML19257A308 | 11 December 1979 | Submits Deficiency Rept Re Nonconservatism Found in Error Analysis Assumptions Used to Determine Accuracy of Nuclear Instrumentation Reactor Rate Trip Circuitry.Solution Minimizes Power Overshoot for Rod Drop Events | Rod Drop Event |
| ML19257A316 | 12 December 1979 | Submits Addl Info Re 791207 Rept of Nonconservative Calculation of Seismic Response Spectra.Analysis of Switchover to New Computer Code Revealed Error Calculating Inertial Forces.Caused by B&W Error.Mod Underway | |
| ML19257A317 | 11 December 1979 | Submits Info Re Deficiency Found on 791207 Re Nonconservatism in Method Used to Generate Power Distributions & Rod Worths for Dropped Rod Events.New Analysis Performed Using More Conservative Model | Rod Drop Event |
| ML19257D804 | 18 January 1980 | Final Deficiency Rept Re Failure to Seismically Qualify Differential Pressure Switches on Svc Water Strainers to Control Room Air Conditioners.Switches W/Previous Qualification Will Be Installed Prior to Fuel Loading | |
| ML19257D858 | 17 January 1980 | Final Rept Re 791218 Significant Breakdown in Forney Compression Testing Machine Calibr Verification.Engineering Investigation Revealed That Compression Test Results Were Conservative.Astm Code Being Reviewed to Assure Compliance | |
| ML19260B193 | 7 December 1979 | Interim Deficiency Rept Re Certain Seismic Amplified Response Spectrum Curves Used as Input Data to Pipe Stress Analyses.Corrective Action in Progress Using Proper Input Data.Two Pipes Required Mods | |
| ML19260C104 | 14 December 1979 | Final Deficiency Rept Re Containment Depressurization Actuation & Safety Injection Actuation Circuitry.Indicates Resolution of Revisions to Previously Reported Circuits Not Complying W/Fsar | |
| ML19260C709 | 4 January 1980 | Final Deficiency Rept Re LOCA-ECCS Evaluation Model | |
| ML19270J771 | 18 January 1980 | Final Deficiency Rept:On 791220,NRC Region 2 Notified That Differential Pressure Switches on Svc Water Strainers to Control Room Air Conditioning Chillers Were Not Seismically Qualified.Seismically Qualified Switches Ordered | |
| ML19270J773 | 17 January 1980 | Final Deficiency Rept Re Significant QC Program Breakdown Re Forney Compression Testing Machine Calibr Verification. Machine Has Not Been Calibr in 0-25,000 Lb Range.Compression Testing Machine w/6,000-60,000 Lb Range to Be Installed | |
| ML19273C199 | 2 November 1979 | Part 21 Rept Re Safeguards Area Exhaust Sys.Info Not Currently Available Will Be Submitted as 30-day Rept | |
| ML19275A868 | 28 September 1979 | Interim Deficiency Rept Re Performance of nonsafety-grade Equipment in Adverse Environ,Impacting Protective Functions Performed by safety-grade Equipment.Sys Under Review | |
| ML19275B649 | 4 January 1980 | Interim Deficiency Rept Re DNBR Limit & Nuclear Instrumentation Reactor Rate Trip Circuit,Reported Previously in Separate Submittals.Administrative Reduction in Control Rod Insertion Limits Implemented | |
| ML19276H665 | 14 December 1979 | Final Deficiency Rept Re Ambient Temp Ranges Exceeding Design Limits for Emergency Diesel Generator Fan Cooling Sys.Mods to Current Fan Drive Shaft & Seasonal Fluid Changes Corrected Deficiency |