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| Issue date | Title | Topic | |
|---|---|---|---|
| ML18016A901 | 12 April 1999 | Part 21 Rept Re Defect in Component of DSRV-16-4,Enterprise DG Sys.Caused by Potential Problem with Connecting Rod Assemblies Built Since 1986,that Have Been Converted to Use Prestressed Fasteners.Affected Rods Should Be Inspected | |
| 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 | |
| ML20236V312 | 29 July 1998 | Final Part 21 Rept Re Enterprise DSR-4 & DSRV-4 Edgs.Short Term Instability Was Found During post-installation Testing & Setup as Part of Design mod/post-work Testing Process. Different Methods Were Developed to Correct Problem | |
| ML20248A167 | 22 May 1998 | Interim Part 21 Re Enterprise DSR-4 & DSRV-4 Emergency diesel.Post-installation Testing Revealed,High Em/Rfi Levels Affected New Controllers,Whereas Original Controllers Were unaffected.Follow-up Will Be Provided No Later than 980731 | |
| ML20198E063 | 7 January 1998 | Part 21 Rept Re Shipment by Dubose National Energy Svcs,Inc, of 40 Pieces of 4 inch,90 Degree Elbows Which Did Not Meet ASME Section II SA-234 Requirements | |
| ML20217K599 | 11 August 1997 | Part 21 Interim Rept Re Fafnir S7K Bearing Discrepancies. Further Evaluation of Deviation Is Required & Will Be Completed by 971111 | |
| 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 | |
| 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 | |
| ML20210E359 | 27 March 1997 | Part 21 Rept Re Sorrento Electronics Inc Has Determined Operation & Maint Manual May Not Adequately Define Requirements for Performing Periodic Surveillance of SR Applications.Caused by Hardware Failures.Revised RM-23A | |
| 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 |
| ML20115J398 | 22 July 1996 | Interim Part 21 Rept Re 3/4 Schedule 80 Pipe Furnished to Consolidated Power Supply.Investigation Revealed Only One Nuclear Customer Involved in Sale of Matl | |
| ML20115D200 | 9 July 1996 | Part 21 Rept Re Mfg Defect of Enterprise DSR-4 & DSRV-4 Edgs,Originally Mfg by Calcon Corp.Amot Control Corp Purchased Calcon Product Line & Maintains Design & Production.Valves Returned to Cooper Energy Svcs on 960131 | |
| ML20117G464 | 14 May 1996 | Part 21 Rept Re Cooper Bessemer Reciprocating Products,Div of Cooper Cameron Corp,Issued Ltr to Define Utils/Plants Containing Similar Equipment as Supplied on Cooper Bessemer Ksv & Enterprise Dsr EDGs | |
| ML20100L741 | 29 February 1996 | Final Part 21 Rept Re Fan Motor Bearing Indications,Updating Status of Evaluation of Deviation.Bearings for Unit 2 Fcus Inspected & No Linear Indications Noted.Unit 1 Fcu Bearings Will Be Inspected Prior to Upcoming Refueling Outage | |
| ML20097A564 | 31 January 1996 | Final Part 21 Rept Re Ball Valves Supplied by Cardinal Industrial Products Containing Suspect Pressure Boundary Bolting.Valves Containing Suspect Bolts Returned to Canadian Worcester Controls Ltd to Have Bolting Replaced | |
| TXX-9603, Interim Part 21 Rept Re Linear Indication on Fan Motor Bearings Mfg by Fafnir.Bearings Provided as Spares for Four UPS Room Fan Coil Units.Further Evaluation Required & Evaluation Will Be Completed by 960229 | 29 January 1996 | Interim Part 21 Rept Re Linear Indication on Fan Motor Bearings Mfg by Fafnir.Bearings Provided as Spares for Four UPS Room Fan Coil Units.Further Evaluation Required & Evaluation Will Be Completed by 960229 | |
| ML20092H364 | 13 September 1995 | Part 21 Rept Re 3/4 Inch ASME Section III Class 2 Ball Valves Supplied by Canadian Worcester Controls Ltd (Cwcl) | |
| ML20078C259 | 19 October 1994 | Part 21 Rept Re Valtek Valves Addressed in NRC Part 21 Log Number 93-325,installed at South Texas Project.Valtek re-designed Trim to Meet All Requirements & Built Parts to Retrofit in Valves | |
| ML20064G326 | 7 March 1994 | Part 21 Rept Re RTP Universal I/O Controller Interface Card Utilized in Universal I/O Controller Supplied for Installation at Comanche Peak.Design Corrected Through Engineering Change Order Adding Two Filter Capacitors | |
| ML20064G339 | 7 March 1994 | Part 21 Rept Re RTP Universal I/O Controller Interface Card Utilized in Universal I/O Controller,Supplied for Installation at Comanche Peak & Yonggwang Nuclear Power Plant,Units 3 & 4.Two Filter Capacitors Added to Design | |
| ML20064G344 | 7 March 1994 | Part 21 Rept Re RTP Universal I/O Controller Interface Card Utilized in Universal I/O Controller Supplied for Installation at Comanche Peak.Design Corrected Through Engineering Change Order Adding Two Filter Capacitors | |
| ML20063K679 | 16 February 1994 | Part 21 Rept Re Failed Bolting on Pacific Air Products Co Gravity Dampers.Failed Bolts Replaced W/Higher Strength Bolts | |
| 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 | |
| ML20059A718 | 19 October 1993 | Part 21 Rept Re Defective Rocker Arms Supplied to TU & Clei. Rocker Arms Machined & Inspected to Incorrect Print & Discovered at Tu.Defective Rocker Arms Recalled from Nuclear Customers.No Corrective Action Required at Respective Utils | |
| ML20024H834 | 19 August 1993 | Part 21 Rept Re Potential Problem W/Installation of Bushing in gear-type,3 Gpm,Oil Pump Used in Refrigerant Compressors, Mfg by Dunham-Bush.CVI Will Call for Hold Point in Fabrication Process Where Bushing Installed | |
| ML20012G326 | 18 February 1993 | Part 21 Rept Re Borg-Warner Bolted Bonnet Swing Check Valve Failing to Close During Preoperational Testing.Caused by Internal Body Wall Protrusions Resulting from Intersecting Machine Bores.Design Mods Will Be Implemented | |
| ML20128M782 | 12 February 1993 | Part 21 Rept Re Failure of 4-inch,150 Bolted Bonnet Swing Check Valve 2CC-0697 to Fully Close During Preoperational Testing.Disc Design Mod Installed.New Disc Component Should Be Installed or Existing Disc Refurbished | |
| ML20127P615 | 22 January 1993 | Final Deficiency Rept CP-92-019 Re Steam Leak Discovered in Train a RHR Pump Casing Gasket & Seal on 920729.No Apparent Damage to Seal Noted.Item Not Reportable Per 10CFR50.55(e) or Part 21 | |
| ML20127L466 | 20 January 1993 | Suppl to Final Deficiency Rept CP-89-015,provided on 921130 Re Check Valves 2CC-0693 & 2CC-0697 Failure to Close on 921201.Valves Reworked & Retested Satisfactorily.Supplier Bw/Ip Advised of Test Failures,Cause & Corrective Actions | |
| 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 | |
| ML20127A120 | 8 January 1993 | Supplemental Deficiency Rept CP-92-004 Re Mfg Defects in Printed Circuit Boards for Elgar Class 1E Electric Power Inverters.Initially Reported on 920513.Baseline Data Established for Each Printed Circuit Board | |
| ML20127C219 | 7 January 1993 | Supplemental Deficiency Rept CP-92-010 & Final Deficiency Rept CP-92-020 Re Cracks in Containment Spray Pump Suction Vent Piping,Initially Reported on 920722 & 1204, Respectively.Unacceptable Configurations Modified | |
| 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 |
| ML20126E155 | 22 December 1992 | Supplemental Deficiency Rept CP-92-007 on QA Program Breakdown of Kranco,Inc Re Parts for Polar Crane Supplied W/O Dedicated QA Program.Initially Reported on 920814.Util Will Not Utilize Supplied Components for Critical Lifts | Safe Shutdown |
| ML20126C769 | 18 December 1992 | Final Deficiency Rept CP-92-018 Re Steam Leak Discovered in 3-inch Schedule 80 Lateral Installed SG Blowdown Sys. Initially Reported on 920729.Caused by Porosity in Initial Casting.Item Not Reportable Per 10CFR50.55(e) or Part 21 | |
| ML20125D543 | 11 December 1992 | Final Deficiency Rept CP-92-016 Re Stems on Borg-Warner manually-operated 3-inch Gates Valves Separating from Disks. Initially Reported on 920911.Addl Administrative Controls Will Be Implemented to Prevent Inadvertent Damage | |
| ML20125D387 | 8 December 1992 | Interim Deficiency Rept CP-92-019:on 920729,steam Leak Discovered in Train a RHR Pump Casing Gasket & Seal During Hot Functional Testing.Deviation Being Evaluated.Evaluation Will Be Complete by 930125 | |
| 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 |
| ML20125A951 | 4 December 1992 | Part 21 Rept,Providing Major Milestone Schedule & Portions of Part 21 Open Items List of Issues Currently in Review | |
| TXX-9253, Final Deficiency Rept CP-89-015 Re Backleakage Through AFW Check Valves Supplied by Bw/Ip Intl,Inc.Initially Reported on 890519 & Documented in Insp Rept 50-446/92-25. Check Valves Will Be Inspected Prior to Fuel Load | 25 November 1992 | Final Deficiency Rept CP-89-015 Re Backleakage Through AFW Check Valves Supplied by Bw/Ip Intl,Inc.Initially Reported on 890519 & Documented in Insp Rept 50-446/92-25. Check Valves Will Be Inspected Prior to Fuel Load | |
| 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 | |
| ML20116E299 | 3 November 1992 | Part 21 Rept Forwarding CPSES Major Milestone Schedule & Portions of Part 21 Open Items List of Issues That Are Currently in Review | |
| ML20106E195 | 2 November 1992 | Part 21 Rept Re Cracked Fuel Nozzle Tips Purchased from Bendic.Initially Reported on 910405.Addl Testing of Tips Performed Completed,Reviewed & Recommendation to Prevent Failures Made | |
| ML20116C463 | 30 October 1992 | Final Deficiency Rept CP-92-08 Re Train B Diesel Generator Auxiliary Lube Oil Pump Valve.Initially Reported on 920722. All Nine Valves in Warehouse Have Been Magnetic Particle Examined | |
| ML20116C600 | 30 October 1992 | Final Deficiency Rept CP-92-010 Re Containment Spray Pump Vent Weld Cracks.Initially Reported on 920722.Vent Pipe Replaced & Containment Spray Pump Vibration Being Corrected, Per Steady State Vibration Monitoring Test | |
| ML20116D157 | 29 October 1992 | Final Deficiency Rept CP-92-12 Re Deviation in Several Spare ferro-resonant Transformers.Initially Reported on 920618. Caused by THD Measurement Exceeding Westinghouse Equipment Spec Criteria.Not Reportable Per 10CFR50.55(e) or Part 21 | |
| ML20115H077 | 20 October 1992 | Final Deficiency Rept CP-92-017 Re Improper Position of Seal Water Circulating Ring on Train a RHR Pump Supplied by Intersoll-Rand.Initially Reported on 920921.Motor Raised & Disassembled to Position Circulating Ring Properly | |
| ML20115C178 | 13 October 1992 | Interim Deficiency Rept SDAR-CP-92-016,re Defect in Two Manually Operated 3 Inch Gate Valves,In Which Stems Separated from Disks & Disks Being Wedged in Seats.Initially Reported on 920911.Internals of Two Valves Replaced | |
| TXX-9247, Final Deficiency Rept CP-86-41 Re Effect of Small Break LOCA During Mode 4 Operation.Initially Reported on 860528. Westinghouse Owners Group Program Modified to Eliminate Use of leak-before-break Methodology | 2 October 1992 | Final Deficiency Rept CP-86-41 Re Effect of Small Break LOCA During Mode 4 Operation.Initially Reported on 860528. Westinghouse Owners Group Program Modified to Eliminate Use of leak-before-break Methodology |