Semantic search
Jump to navigation
Jump to search
| Issue date | Title | Topic | |
|---|---|---|---|
| ML20236P045 | 8 July 1998 | Part 21 Rept Re non-conformance & Potential Defect in Component of Nordberg Model FS1316HSC Standby Dg.Caused by Outer Spring Valves Mfg from Matl That Did Not Meet Specifications.Will Furnish Written Rept within 60 Days | |
| ML20198J043 | 28 July 1997 | Update to Amended Interim Part 21 Rept Re Harness/Positive Plate Lug Disconnect on List Ish Round Cell Battery.Requests 7-10 Day Extension to Complete Review | |
| ML20134L108 | 10 October 1996 | Part 21 Rept Re Defect in Component of Nordberg Model FS1316HSC Sdg.Nak Engineering,Inc Has Established & Adopted Procedures to Assemble Fuel Oil Lines & Climinate Possible Defective Condition | |
| ML20116H203 | 5 August 1996 | Part 21 Rept Re Potential Defect on Condition in Component of Nordberg Model FS1316HSC Sdg W/Fuel Injection Line Assembly Which Connects Fuel Pump to Injector.Caused by Loose Fuel Line Sleeve | |
| ML20086D990 | 3 July 1995 | Part 21 Rept Re Two Failures of Model Vtr 500 Turbochargers Supplied by Abb Turbo Systems Ltd.Failure of Turbocharger Renders Associated EDG Incapable of Providing Rated Output. Seventeen Hole Jet Assist Wall Plates Replaced | Enforcement Discretion Commercial Grade |
| ML20073S954 | 27 June 1994 | Part 21 Rept Re Incorrect Matl Supply Discovered on Unshipped Order.Pump Div Will Notify Enertech W/ Recommendation That Items Supplied W/Incorrect Matl Be Removed & Destroyed | |
| ML20070A144 | 22 June 1994 | Part 21 Rept Re Conditions Which Affect Hydraulic Valve Operators Supplied by Bw/Ip to Enertech Co & Listed Utils. Vendor Will Notify Enertech W/Recommendations That All Items Supplied W/Incorrect Matl Be Removed & Destroyed | |
| ML20126J596 | 31 December 1992 | Part 21 Rept Re Potential Loss of RHR Cooling During Nozzle Dam Removal.Nozzle Dams May Create Trapped Air Column Behind Cold Leg Nozzle Dam.Mod to Nozzle Dams Currently Underway. Ltrs to Affected Utils Encl | Hydrostatic |
| ML20125C716 | 7 December 1992 | Part 21 Rept Re Possibility for Malfunction of Declutching Mechanisms in SMB/SB-000 & SMB/SB/SBD-00 Actuators. Malfunction Only Occurs During Seismic Event.Balanced Levers May Be Purchased from Vendor.List of Affected Utils Encl | Stroke time Anchor Darling |
| ML20127P586 | 23 November 1992 | Followup to 921005 Part 21 Rept Re Potential Defect in SB/SBD-1 Housing Cover Screws.Procedure Re Replacement of SBD-1 Spring Cover Bolts Encl.All Fasteners Should Be Loosened & Removed.List of Affected Utils Encl | |
| ET-NRC-92-3707, Part 21 Rept Re Degraded Performance Condition of Westinghouse Protection Sys Overtemp Delta Temp Reactor Trip Function.Issue Not Reportable,Per 10CFR21,based on Diversity of Westinghouse Protection Sys,Per WCAP-7306 | 15 June 1992 | Part 21 Rept Re Degraded Performance Condition of Westinghouse Protection Sys Overtemp Delta Temp Reactor Trip Function.Issue Not Reportable,Per 10CFR21,based on Diversity of Westinghouse Protection Sys,Per WCAP-7306 | |
| ML20055E483 | 29 June 1990 | Part 21 Rept Re Defective Steam Generators Supplied by Westinghouse.Util Will Continue to Rept Any Defects or Other Info Reportable Under 10CFR21 Upon Discovery &/Or During Litigation | |
| ML20043G764 | 22 May 1990 | Part 21 Rept Re Potential Defect W/Speed Transmitter in Diesel Engine Control Panel of Dsrv Standby Diesel Generator.Estimate of Completion of Corrective Actions Not Possible,Since Correction Made by Other Companies | Overspeed trip |
| ML17348A162 | 27 March 1990 | Part 21 Rept Re Matls W/Programmatic Defects Supplied by Dubose Steel,Inc.Customers,Purchase Order,Items & Affected Heat Numbers Listed | |
| ML19351A294 | 9 October 1989 | Part 21 Rept Re Potential of Ambient Compensated Molded Case Circuit Breakers to Deviate from Published Info. Instantaneous Trip Check Will Be Instituted on All Class 1E Thermal/Magnetic Ambient Breakers Prior to Shipment | |
| ML20245D954 | 6 September 1988 | Part 21 Rept Re Condition Involving Inconel 600 Matl Used to Fabricate Steam Generator Tube Plugs & Found to Possess Microstructure Susceptible to Stress Corrosion Cracking | |
| ML20211P721 | 23 February 1987 | Part 21 Rept Re Rockbestos Coaxial Cable Used in Sorrento Electronics Digital & Analog high-range Radiation Monitor. Insulation Resistance at High Temp Not High Enough for Ion Chamber & Associated Electronics to Operate Properly | |
| ML20214M318 | 4 September 1986 | Potential Part 21 Rept Re Contromatics Actuator W/Jackscrew/ Handwheel Emergency Override Operator.Jackscrew/Handwheel Should Be Used for Emergency Manual Operation Only.Encl Ltr Also Sent to Listed Utils/Ae Firms | |
| ML20206S084 | 30 June 1986 | Part 21 Rept Re Possible Cut Wires in Wire Harness of Bbc Brown Boveri K600/K800 Circuit Breakers.Initially Reported on 860509.Safety Implications Listed.Gear Guard Designed to Prevent Cut Wires | |
| ML20137K960 | 10 December 1985 | Part 21 Rept Re Actuators Having Only One of Required Two Springs Which Could Result in Reduction of Integrity of Reactor Coolant Boundary.Valves Supplied to McGuire Units 1 & 2 & Catawba Unit 2.Catawba Unit 2 Valve Corrected | |
| ML20127E311 | 19 June 1985 | Part 21 Rept Re Potential Separation of Aluminum Nameplate from Hevi-Duty Type Sbw or Szo Transformers in Nelson Electric Class 1,035-volt Motor Control Ctrs,W/Potential Short Circuit.Initially Reported on 850618 | |
| ML20101P201 | 26 December 1984 | Deficiency & Part 21 Rept Re Quench Cracks Discovered in Sure Loc,Inc ASME Class 2 Hex Nuts.Supplier Notified.Nuts Will Be Replaced as Necessary | |
| ML20091P677 | 8 June 1984 | Part 21 Rept Responding to Re QA Problems W/Hvac Equipment Mfg by Bahnson Co.Equipment Will Be Reviewed to Determine Deficiencies,Including Catawba & Oconee Air Handling Units | |
| ML20091G207 | 24 May 1984 | Part 21 Rept Re Bug in Detector Computer Code Resulting in Possible Miscalculation of Tech Spec Parameters for Enthalpy Rise Peaking Factor.Problem Corrected & Responsible Parties Notified | |
| ML20092P669 | 24 May 1984 | Potential Part 21 Rept Re Bug in Detector Computer Code for in-core Detectors.Bug Incorrectly Calculated Enthalpy Rise Peaking Factor.Bug Corrected | |
| ML20081H480 | 3 November 1983 | Followup to Part 21 Rept Re Potential Failure of Westinghouse Type SA-1 Relays (IE Info Notice 83-63).Addl Potential Problems Discussed in Encl Ltr Re Tantalum Capacitor Leaking Electrolyte.Not Reportable Per Part 21 | |
| ML20081K520 | 1 November 1983 | Followup Part 21 Rept Re Leaking Tantalum Capacitors in Class IE,SA-1 Relays (Ref IE Info Notice 83-63).Customers Given Option of Returning Relays or Performing Field Mod | |
| ML20070C763 | 10 December 1982 | Part 21 Rept Re Problem W/Brown Boveri Electric,Inc Low Voltage Circuit Breakers W/Solid State Trip Devices.Units from San Onofre 2 & 3 Failed Due to long-term Degradation of Filter Capacitor C205.Suspect Trip Units Should Be Tested | |
| ML20069D547 | 13 September 1982 | Interim Deficiency Rept Re Rotork Model NA-2 Electric Motor Switch Problems.Initially Reported on 820623.Clear Plastic Switches on Unit 1 Replaced.Unit 2 Switch Replacement Scheduled.Also Reported Per Part 21 | Eddy Current Testing |
| ML20054C086 | 14 April 1982 | Part 21 Rept Re Airlock Door Seals Presenting Potential Safety Problem.Seals Should Not Be Used After Startup W/O Recertification.Seals Will Be Replace If Approved Test & Insp Program Cannot Be Developed | |
| ML20005B455 | 29 June 1981 | Part 21 Rept Re Failure of Presray Inflatable Seal Located on Personnel Air Lock.Cause Under Investigation | |
| ML19343C507 | 17 March 1981 | Significant Deficiency Rept 369-370/80-02 Re Steam Generator narrow-range Level Transmitter Cable Failure to Meet Environ Qualification Requirements.Cable in Unit 1 for Steam Generator Level Transmitters Replaced in Aug 1980 | |
| ML20003A332 | 28 January 1981 | Advises That Corrective Actions Re Significant Deficiency Repts 50-369/80-20 & 50-369/80-21 Have Been Completed for Mode 6 Sys.Remaining Sys Will Be Completed by 810301 | |
| ML20002E148 | 9 January 1981 | Suppl 1 to Significant Deficiency Repts SD 369/80-21 & 370/ 80-16 Re Failure to Consider Containment Vessel Dynamic Movements Due to Postulated Loca,Initially Reported 801126. Analysis Revised | |
| ML19343B815 | 17 December 1980 | Forwards Supplemental Response to Significant Deficiency Repts SD 369/80-18 & 370/80-13 Re Defective Coils in Valcor Solenoid Valves,Per NRC 801114 Request.Coils in Valves of Sys Required for Fuel Loading Will Be Replaced by 810109 | |
| ML19345C334 | 26 November 1980 | Deficiency Rept Re Improper Loads Used for Support/Restraint Design (Loca,Valve Discharge,Mismatch).Comprehensive Program Initiated to Identify Support/Restraints Affected,Revise Design Sketches & Perform Hardware Changes | Earthquake |
| ML19345C486 | 26 November 1980 | Significant Deficiency Repts SD 369/80-21 & SD 370/80-16 Re LOCA Pressure Effects Not Considered in Analysis of Piping W/Cold Penetrations Initially Reported 801031.Comprehensive Program Initiated to Correct Problems | |
| ML19345C485 | 26 November 1980 | Significant Deficiency Repts SD 369/80-20 & SD 370/80-15 Re Improper Loads for Design of Pipe Support/Restraints Initially Reported 801028.Comprehensive Program Initiated to Correct Problems | |
| ML19343B499 | 18 November 1980 | Part 21 Rept Re Improper Operation of E-max Isolator Part Number 1750115.Single Channel Isolators 1750141 & 1750115 Will Be Changed Out W/Part 1750146 | |
| ML19343A655 | 14 November 1980 | Significant Deficiency Repts 369/80-19 & 370/80-14 Re Review of Piping Affecting Pipe Rupture Environ in Vital Equipment Areas.Main Steam Drain Lines Not Considered for Pipe Rupture Effects | |
| ML20002A249 | 30 October 1980 | SD-369/80-18 & 370/80-18:on 800930,Valcor Solenoid Valves V70900-21-3 Failed.Caused by Coil Failure Due to Incompatibility Between Polyimide Magnet Wire Insulation & Polyvinyl Butyral Binding Agent.All Coils to Be Replaced | |
| ML19344B396 | 10 October 1980 | Deficiency Repts SD 369/80-17 & 370/80-12 Re Improper Operation of E-max Instruments,Inc Model 175C141 Optical Isolator When Driving Loads W/Greater than 1 Amp Inrush Current.Parts Will Be Replaced W/Model 175C146 | |
| ML20008E341 | 8 October 1980 | Part 21 Rept Re Brand Rex Conductor.Absence of Cured Conductor Results in Unqualified Class IE Equipment. Verification of All Current & Future Components Has Been Implemented | |
| ML19338E617 | 26 September 1980 | Deficiency Rept Re Possible Overvoltage During Ground Faults of Potential Transformers/Cables Connected to Diesel Generators.Potential Transformers Will Be Replaced W/ phase-to-phase & open-delta Connected Transformers | |
| ML19338E078 | 18 September 1980 | Significant Deficiency Rept SD 369/80-15:on 800917, Pressurizer Cavity Exceeded Design Temp.Caused by Insufficient Ventilation Cooling Flow & Higher than Design Heat Loads.Permanent Temp Monitoring Sys Will Be Installed | |
| ML19331D945 | 28 August 1980 | Significant Deficiency Rept Re Loose Impeller Cap & Jam Nuts on RHR Pump 1A.Caused by Inadequacy of IR Recommendation Re IE Circular 79-19.Util Has Informed I-R That Recommendation Will Not Resolve Problem | |
| ML19344D932 | 18 August 1980 | Deficiency Rept SD 369/80-13 Re Mechanical Shock Arrestors Damaged During Installation.Arrestors Have Been Functionally Checked.Damaged Arrestors Have Been Replaced.Insp Procedures Revised to Require Functional Check | |
| ML19344E034 | 12 August 1980 | Suppl to Significant Deficiency Repts SD 369/80-07 & 370/80-06 Re Inadequate Min Flow Through Centifugal Charging Pumps.Westinghouse Evaluated Impact of Operating Procedure Mods.Interim Mod II Implemented for Corrective Action | |
| ML19338C632 | 11 August 1980 | Significant Rept SD 369/80-11 Re Valve Operator Orientation. Review of ASME Code Class 1,2 & 3 & Util Class F Valve Power Operator Orientations Revealed Several Valves Erected Outside Design Tolerances.Stds Being Revised | |
| ML19331B949 | 7 August 1980 | Deficiency Rept Re Defective Coil Leads on Valcor Solenoid Valves Model V70900-21-3.Vendor Insp Revealed One Valve Failed by Magnet Wire Shorting Solenoid Housing.Second Valve Start Wire Lead Joint Touching Windings.Valves Replaced |