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| Issue date | Title | Topic | |
|---|---|---|---|
| 3F1099-19, Part 21 Rept Re Damage on safety-grade Cable Provided to FPC by Bicc Brand-Rex Co.Damage Was Created During Cabling Process While Combining Three Conducters.Corrective Action Program Precursor Card PC99-2868 Was Initiated | 13 October 1999 | Part 21 Rept Re Damage on safety-grade Cable Provided to FPC by Bicc Brand-Rex Co.Damage Was Created During Cabling Process While Combining Three Conducters.Corrective Action Program Precursor Card PC99-2868 Was Initiated | |
| ML20217B093 | 6 October 1999 | Part 21 Rept Re Damaged Safety Grade Electrical Cabling Found in Supply on 990831.Damage Created During Cabling Process While Combining Three Conductors Just Prior to Closing.Vendor Notified of Reporting of Issue | |
| ML20217A169 | 22 September 1999 | Part 21 Rept Re Engine Sys,Inc Controllers,Manufactured Between Dec 1997 & May 1999,that May Have Questionable Soldering Workmanship.Caused by Inadequate Personnel Training.Sent Rept to All Nuclear Customers | |
| ML20211D649 | 25 August 1999 | Part 21 Rept Re Nonconformance within LCR-25 safety-related Lead Acid Battery Cells Manufactured by C&D.Analysis of Cells Completed.Analysis of Positive Grid Matl Shows Nonconforming Levels of Calcium within Positive Grid Alloy | |
| ML20207M923 | 12 March 1999 | Amended Part 21 Rept Re Cooper-Bessemer Ksv EDG Power Piston Failure.Total of 198 or More Pistons Have Been Measured at Seven Different Sites.All Potentially Defective Pistons Have Been Removed from Svc Based on Encl Results | |
| ML20247G613 | 13 May 1998 | Part 21 Rept Re Defect Contained in Automatic Switch Co, Solenoid Valves,Purchased Under Purchase Order (Po) 970161. Caused by Presence of Brass Strands.Replaced Defective Valves | |
| ML20217A153 | 16 April 1998 | Closure to Interim Part 21 Rept Submitted to NRC on 970929. New Date Established for Completion of Level I & 2 Setpoint Project Committed to in .Final Approval of Setpoint Calculations Will Be Completed by 980531 | |
| ML20211M649 | 8 October 1997 | Addenda 1 to Part 21 Rept Re Weldments on Opposed Piston & Coltec-Pielstick Emergency stand-by Diesel gen-set lube-oil & Jacket Water Piping Sys.Revised List of Potentially Affected Utils to Include Asterisked Utils,Submitted | |
| ML20211H791 | 30 September 1997 | Part 21 Rept Re Failure of Weldment Associated w/lube-oil Piping Sys on 970804 at Millstone,Unit 2.Root Cause Is Not Yet Known.Quality of Weldment Is Being Considered.Listed Util Sites Affected | |
| ML17309A621 | 29 September 1997 | Part 21 Rept Re Final Disposition of Masterflow 713 & Embeco 636 Grout Nonconformance Reported by Master Builders,Inc. Licensee Continuing to Monitor shelf-life of Masterflow 713 & Embeco 636 Grouts Produced at Rancho Cucamonga | |
| ML20217D414 | 29 September 1997 | Interim Part 21 Rept Re Errors Noted During Preparation of ITS Surveillance Test Procedures Using GE Calculated Setpoints.Setpoint Calculations Will Be Reviewed,Corrected & Approved to Establish Significance of Errors | |
| ML20140A966 | 29 May 1997 | Part 21 Rept Re Ksv Emergency Diesel Generator Power Piston Failure.Caused by Jacket Water in Combustion Chamber. Recommends That Users Verify That Crown Thickness at Valve Cutout Be 100 Minimum | Finite Element Analysis |
| ML20140G448 | 1 May 1997 | Part 21 Rept Re Potential Defect in Component of Dsrv & Dsr Enterprise Standby Diesel Generator Sys.Recommends That Springs Be Inspected on Periodic Basis,Such as During Refueling Outages | |
| ML20137G626 | 25 March 1997 | Svcs Part 21 Rept Re Emergency Generators Installed at Zion Station Which Developed Significant Drop in Crankcase Lube Oil Level.Caused by Crack in Liner Wall,Allowing Jacket Water to Enter Chamber | Finite Element Analysis |
| ML20134B230 | 24 January 1997 | Final Part 21 Rept Re Potential Safety Concern on Matl Used for Fabrication of Permanent Canal Seal Plate.Correpondence W/Fabricator & Matl Supplier Documents Tig Automated Welding Process Used to Fabricate Angle Pieces | Commercial Grade |
| ML20133E800 | 8 January 1997 | Deficiency Rept Re Nonconformance Related to Masterflow 713 Grout,Which Master Builders,Inc Has Supplied as Nuclear SR Product to 18 Npps.Cause Unknown.Requests That Listed Info Be Provided to Gain Insight as to Scope & Possible Cause | |
| ML20101N844 | 5 April 1996 | Interim Part 21 Rept Re Potential Safety Concern on Matl for Fabrication of Permanent Canal Seal Plate.Licensee Will Provide Final Rept to NRC in Approx Six Months Upon Completion of Evaluation of Welds | Commercial Grade |
| 3F0295-15, Part 21 Rept Re GE Supplied Constant Voltage Transformers (Cvt).Vendot Supplied FPC W/Instructions on Mod of Cvts Located in Installed VBIT-1D,to Return Output Voltage to Required Values & FPC Modified Cvts | 27 February 1995 | Part 21 Rept Re GE Supplied Constant Voltage Transformers (Cvt).Vendot Supplied FPC W/Instructions on Mod of Cvts Located in Installed VBIT-1D,to Return Output Voltage to Required Values & FPC Modified Cvts | |
| ML20080G327 | 30 January 1995 | Part 21 Rept Re Furnished Commercial grade/non-safety Related Studs,Nuts & Washers for Use on safety-related Crystal River 5th Yr post-tension Surveillance Program | Commercial Grade Dedication Commercial Grade |
| ML20078F584 | 27 January 1995 | Part 21 Rept Re Vendor Using Incorrect Acceptance Criteria on Qualification Test Rept & Acceptance Criteria Used Not Not Met by Cvts.Vendor Continues to Seek Resolution of Matter | |
| ML20076M832 | 28 October 1994 | Submits Followup to 940516 Part 21 Rept Informing of Investigation to Determine Data Supplied in mid-80 Used by Nuclear Utilities to Set Torque Switches in MOV | Weak link |
| ML18038A897 | 7 September 1994 | Part 21 Rept Re Defect in Latching Mechanism of Potter & Brumfield Relay on C&D High Voltage Shut Down Alarm Assembly Printed Circuit Boards.Pull Test on Relay Reset Button Incorporated Into Receiving Insp Procedures | |
| ML20072A769 | 8 August 1994 | Interim Part 21 Rept 2 Re Weak Link Analysis for Movs.No Evidence to Support Fact of Erroneous Data Discovered. Investigation Continuing | Weak link |
| ML20059H772 | 17 January 1994 | Part 21 Rept Re Virginia Power Notifying Fairbands Morse Via Failure Analysis Rept NESML-Q-058 of Defective Air Start Distributor cam,16104412 | |
| ML20059F263 | 7 January 1994 | Part 21 Rept Re Air Start Distributor Cam Mfg by Fairbanks Morse.Mfg Suggests That Site Referenced in Encl App I Inspect Air Start Distributor Cam as Soon as Practical | |
| ML20058K384 | 9 December 1993 | Part 21 Rept Re Potential Defect in Component of Dsrv & Dsr Enterprise Standby DG Sys,Regarding Potential Problem W/ Subcover Assembled Atop Power Head | |
| ML20044G531 | 26 May 1993 | Suppl to 921207 Part 21 Rept Re Declutch Sys Anomaly in Certain Types of Valve Actuators Supplied by Limitorque Corp.Limitorque Designed New Declutch Lever Which Will Be Available in First Quarter 1993 | Stroke time |
| ML18096B242 | 1 February 1993 | Part 21 Rept Re Possible Matl Defect in Stainless Steel Swagelock Tube Fittings.Initially Reported on 921218.List of Part Numbers,Heat Codes & Addl Affected Customers Encl | |
| ML20127H230 | 15 January 1993 | Part 21 Rept Re Potential Defeat in Component of Dsrv & Dsr Enterprise Standby DG Sys.Starting Air Distributor Housing Assemblies Installed as Replacement Parts at Listed Sites | |
| ML20126B042 | 17 December 1992 | Final Part 21 Rept Re Potential Problem W/Steel Cylinder Heads.Initially Reported on 921125.Caused by Inadequate Cast Wall Thickness at 3/4-inch-10 Bolt Hole.Stud at Location Indicated on Encl Sketch Should Be Removed | Loctite |
| 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 | |
| ML20118B219 | 23 September 1992 | Suppl to Part 21 Rept Re Potential Deviation in Some Bailey Controls Co 88 Series Modules,Transmitted Via .One Module Found Incapable of Reaching 100% Output at Max Rated Load.Recommends That Circuit Board Assemblies Be Inspected | |
| ML20118B439 | 11 September 1992 | Part 21 Rept Re Degradation in Abb Type 27N Undervoltage Relays Used in Electrical Switchgear.Recommends That Users Review Applications Requiring Exposures Greater than 1E03 Rads TID W/Time Delay Function Option | |
| ML20101M892 | 30 June 1992 | Initial Part 21 Rept Re non-segregated Phase Electrical Bus Duct Mfg in 1972.Initially Reported on 920427.Detailed Calculations Being Done by FPC to Evaluate Momentary Fault Current Against Supplied Ratings of All Bus Sections | |
| ML20094J468 | 2 March 1992 | Part 21 Rept Re Amot Valve (Amot Part 1476B0212A3).Valve Originally Supplied as Part Number 2-05V-153-004 in Overspeed Shutdown Assembly KSV-72-7.Production of Valve Discontinued & Advises That Alternate Assemble Available | |
| ML20094F521 | 18 February 1992 | Part 21 Rept Re Defect in Amot Control Corp Safety Trip Valves for Use in Edgs.Defective Overspeed Trip Valve Removed from DG 1.Replacement & Existing Amot Overspeed Trip Valve on DG 2 Inspected & Determined Not to Contain Defect | |
| ML20079L491 | 29 October 1991 | Part 21 & Deficiency Rept 158 Re Potential Defect in Component of DSRV-16-4 Standby Diesel Generator Sys. Drawing Rev to Increase Gear Tooth Hardness Completed. Recommended Corrective Actions for Sites Listed | |
| ML20028H353 | 13 December 1990 | Part 21 Rept Re Cable Assemblies Failing to Meet IEEE-383 Section 3 Flammability Tests.Results of Tests Conducted on 901206 Encl.Corrective Actions Include Applying Flame Retardant Covering to Cable or Cable Replacement | |
| ML17262A262 | 30 November 1990 | Part 21 Rept Re Chilled Water Sys.Initially Reported on 901030.Evaluation of Perry Plant Will Be Sent by 901230 | |
| ML17348B506 | 9 October 1990 | Part 21 Rept Re Zener Diode VR2 on Power Supply Board 9 1682 00 106 Possibly Being Installed Backwards | |
| ML20012C105 | 7 March 1990 | Part 21 Rept Re Several Failures of Fairbanks Morse Engine Div Piston Pins/Bushings on Upper Pistons.Caused by Incorrect Surface Pattern on Piston Pins.Piston Pins Under Listed Purchase Orders to Be Removed & Replaced | |
| ML20012A901 | 27 February 1990 | Suppls 900213 10CFR21 Rept Re Chilled Water Sys Operation. Evaluation of Crystal River Determined That Postulated High Energy Line Break in Intermediate Bldg May Be Subj to Steam Loads Higher than Normal Loads,Causing Rising Water Temp | |
| ML20005G439 | 10 January 1990 | Provides Addl Info on Part 21 Rept Re Defect in Six Instrument Cracks.Licensee Will Not Assume Liability for Defects After Expiration of Warranty | |
| ML20005G683 | 5 January 1990 | Part 21 Rept Re Installation Instructions for Grommet Use Range for Patel Conduit Seal P/N 841206.Conduit Seals in Environ Qualification Applications Inspected for Proper Wire Use Range & Grommets Replaced | |
| ML19324C113 | 2 November 1989 | Part 21 Rept Re Defects in Instrument Racks for Use in Hatch,Inc Supplied Emergency Diesel Generator Starting Air & Lube Oil Sys.Verification of All Tube Fittings in Instrument Rack Completed & All Discrepant Fittings Corrected | |
| ML20248E012 | 13 September 1989 | Supplemental Part 21 Rept Re Potential Problem W/Six Specific Engine Control Devices in Air Start,Lube Oil, Jacket Water & Crankcase Sys.Initially Reported on 890429. California Controls Co Will Redesign Valve Seating | |
| ML20245B665 | 15 June 1989 | Part 21 Rept 150 Re Potential Defect in Component of Dsr Standby Diesel Generator.Cause of Failure Determined to Be Combination of Insufficient Lubrication to Bushings.Listed Course of Action Recommended at Next Scheduled Engine Maint | |
| ML20205F321 | 10 October 1988 | Part 21 Rept Re Potential Deviation from Tech Spec Concerning Ry Indicators Due to Operating Temp Effect on Analog Meter Movement.Initially Reported on 881006.Customers Verbally Notified on 881006-07 | |
| ML20207P015 | 4 October 1988 | Part 21 Rept Re Fuel Nozzle Tips in Standby Diesel Generator KSV-20-T W/Cracks Permitting Diesel Fuel to Be Sprayed Into Cylinders.Heavy Vapors Observed Emitting from Breathers on Some Cylinder Heads |