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Issue date | Title | Topic | |
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ML17275A720 | 26 November 1980 | Interim Deficiency Rept Re Inadequacy of Sway Brace Brackets Mfg by Power Piping Co,Initially Reported on 800820.Caused by Undersized Welds & Poor Weld quality.In-plant Insp of Brackets Performed.Next Rept Is Scheduled for 810202 | |
ML17275A762 | 10 December 1980 | Interim Deficiency Rept Re Diesel Generator Switchgear Units DGI-7 & DG2-8 Installation.Caused by Insufficient Clearance Between Cabinets to Prevent Impact During Seismic Event. Switchgear Units Connected to Generator Control Cabinets | Safe Shutdown |
ML17275A771 | 15 December 1980 | Interim Deficiency Rept,Originally Reported on 801114,re Overloads on Supports for Spray Pond Piping.Caused by Hardware Design Error.Review of Original Design Margins to Be Completed by 801212 | |
ML17275A772 | 15 December 1980 | Interim Deficiency Rept Re Nonseismic Class 1 Const & Installation of Control Room Cabinet for Digital electro- Hydraulic Turbine Generator.Failure During Seismic Event Could Cause Damage to safety-related Equipment | |
ML17275A781 | 7 January 1981 | Interim Deficiency Rept Re Wiring Interfaces on Motor Operators.Conflict Discovered Between Electrical Const Drawings & Info Provided by Subcontractor.Followup Rept to Be Submitted by 810318 | |
ML17275A782 | 3 December 1980 | Final Deficiency Rept Re Fuel Pool Boiling Prevention, Initially Reported 770818.Addl Cooling Coils Will Not Be Placed in Standby Gas Treatment Sys.Corrective Action: Fuel Pool Cooling Sys Upgraded to Safety Grade Status | |
ML17275A802 | 9 January 1981 | Part 21 Rept Re Failure to Provide Proper Control Components Intl Valves Supplying 2 Gpm Flow When in Closed Position. Caused by Valve Failure.Affected Licensees Notified & Selection of Alternative Method Underway | |
ML17275A811 | 23 January 1981 | Interim Deficiency Rept Re Inadequate Layup After Hydrostatic Test,Initially Reported on 801222.Physical Exam & Ultrasonic Tests Will Be Conducted to Determine If Corrosion Encroached Upon Min Wall Thickness | Safe Shutdown Hydrostatic |
ML17275A813 | 29 January 1981 | Interim Deficiency Rept Re Design Basis for Pipe Whip Supports Inside Containment on High Energy Lines Containing Check Valve or Normally Closed Valve.Extent of Pipe Whip Due to Jet Impingement Will Be Analyzed.Next Rept by 810630 | |
ML17275A814 | 8 January 1981 | Final Deficiency Rept Re Improper Fabrication of Structural Members in Control Room Suspended Ceiling,Initially Reported 801114.Contractor Directed to Weld Washer Plates Over Slotted & Oversized Bolt Holes | |
ML17275A818 | 5 February 1981 | Interim Deficiency Rept Re Sway Brace Bracket Failures, Initially Reported 800820.Caused by Poor Weld Quality,Lack of Fusion & Undersized Welds.Testing Will Resume After Design & Fabrication of New Test Fixtures for Revised Angle | |
ML17275A819 | 5 February 1981 | Deficiency Rept Re Overstress of Clamp & Rigid Sway Strut of Two Installed Hangers Supporting Pipe Risers,Initially Reported 801215.Review of All Riser Clamp Installations Complete.Design Changes Issued to Correct Installation | Safe Shutdown |
ML17275A827 | 5 February 1981 | Final Deficiency Rept Re Apparent Lack of Environ (Radiation Stress) Qualification for Rosemount Pressure Transmitters 1151 D&G,Initially Reported 801215.Transmitters Found Properly Qualified.Potential Deficiency Not Reportable | |
ML17275A845 | 23 February 1981 | Deficiency Rept Re Overloads on Supports for Spray Pond Piping,Initially Reported on 801114.Missing Axial Restraint Lugs Will Be Installed by Contractor | |
ML17275A862 | 5 March 1981 | Interim Deficiency Rept Re Leakage from Ultimate Heat Sink Spray Pond A,Initially Reported 810209.Addl Data Will Be Obtained to Verify Leakage Rate.Spray Pond a Will Then Be Drained & Inspected for Leakage Path | Ultimate heat sink |
ML17275A865 | 22 January 1981 | Interim Deficiency Rept,Originally Reported on 801222,re Thermite Welding on Buried Svc Water Piping.Cause Not Stated.Testing Being Developed to Assess Effect of Welding on Base Matl.Final Rept Will Be Submitted by 810501 | |
ML17275A873 | 10 March 1981 | Interim Deficiency Rept Re Containment Mod QA Program Breakdown,Initially Reported on 801215.Final Rept Is Postponed Until 810430,due to Expanded Scope of Documentation Review & Need for Addl Welding Insps | |
ML17275A874 | 10 March 1981 | Interim Deficiency Rept Re Design Verification of Seismic Category I Quality Class I Heating,Ventilation & Air Conditioning Sys Hangers.Revised Contractor Procedures Have Been Approved | |
ML17275A955 | 20 March 1981 | Final Deficiency Rept Re Wiring Interfaces for Borg-Warner Corp safety-related Valve Motor Operators.Mismatch Discovered Between Connection/Wiring Diagrams & Vendor Wiring Diagrams.Determined Not Reportable Per 10CFR50.55e | |
ML17275A975 | 27 March 1981 | Final Rept Re Steam Tunnel Support Box Beams,Initially Reported on 801114.Concludes That Condition Is Not Reportable Since Beams Are Structurally Sound to Perform Intended Function | Liquid penetrant |
ML17275A991 | 7 April 1981 | Interim Deficiency Rept Re Diesel Generator Bldg Heating, Ventilation & Air Conditioning Sys Design,Initially Reported on 810305.Final Rept Will Be Submitted by 810701 | |
ML17275B008 | 21 April 1981 | Interim Deficiency Rept Re Possible Installation of Defective 2-inch Sch. 80 Piping,Initially Reported in 810309 Telcon.Deficiency Could Result in Degradation or Loss of Function of safety-related Sys.Final Rept by 811031 | Liquid penetrant |
ML17275B034 | 15 May 1981 | Final Deficiency Rept Re Containment Mod QA Program Breakdown,Initially Reported on 801215.Evaluation Concludes That Contract 213A QA Program Breakdown Is Not Reportable Condition | |
ML17275B036 | 20 May 1981 | Final Deficiency Rept Re Thermite Welding on Buried Standby Svc Water Pipe,Initially Reported on 801222.No Adverse Effect on Plant Operation.Issue Determined Not Reportable Per 10CFR50.55(e) | |
ML17275B037 | 19 May 1981 | Interim Deficiency Rept Re Utilization of Deficient Std Design Details for Small Bore Supports Initially Reported on 810417.Re-evaluation of Basic Design Criteria Initiated. Final Rept to Be Submitted by 810731 | |
ML17275B038 | 18 May 1981 | Closeout Deficiency Rept Re Verification of Base Metal Thickness After Repairs,Originally Reported 801215.No Adverse Effect on Safe Plant Operation Noted.Condition Determined Not Reportable Per 10CFR50.55e | |
ML17275B051 | 26 May 1981 | Interim Deficiency Rept Re Annulus Pressurization on Piping Sys Attached to or Supported from Reactor Vessel or Sacrificial Shield Wall,Initially Reported 810122.Deficiency Found Reportable.Final Rept by June 1982 | |
ML17275B052 | 27 May 1981 | Final Deficiency Rept Re Contract 215 Temporary Installation Program,Initially Submitted 810309.Contractor Will Use Insp Rept to Document & Control Temporary Installation.Condition Not Reportable Per 10CFR50.55e | |
ML17277A612 | 18 May 1983 | Interim Deficiency Rept 216 Re RHR Relief Valve Vents. Initially Reported on 821022.Relief Valves Will Be Removed, Containment Leakage Path Will Be Eliminated & Steam Condensing Mode Will Be Deactivated.Next Rept by 830817 | |
ML17277A815 | 12 August 1983 | Interim Deficiency Rept,Condition 216 Re RHR Relief Valve Vents & Condition 270 Re Intermediate Grade Matl on ECCS Pumps.Initially Reported on 821022.Relief Valves to Be Removed.Next Rept by 831103.Marked-up Amends Encl | |
ML17285A432 | 26 April 1989 | Part 21 Rept Re Defect in Limitorque Valve Motor Operator Model SMB-2 W/Soft Worm Shaft Clutch Gear Assembly.Caused by Failure to Install Split Spacer of Worm Shaft Clutch Gear assembly.Safety-related Valves Manually Operated | |
ML17285A477 | 19 May 1989 | Part 21 Rept Re Defects in Target Rock Actuator Kits (Part 300562-1).Initially Reported on 890516.Defects Noted in Cold Solder Condition,Insufficient Solder Joints & Failed Solder Joints.Defective Kits Returned to Mfg for Repair | |
ML17285A500 | 2 June 1989 | Part 21 Rept Re Defect Discovered in Valve Motor Operator of RCIC Inboard Containment Isolation Valve RCIC-V-63.Upper Housing Cover Will Be Machined to Remove Excess Matl to Provide Required Recess | |
ML17286B250 | 14 November 1991 | Part 21 Rept Re Potential Deficiency W/Asl Dry Type Transformers.Initially Reported on 910610.Recommends Issue Be Pursued W/Abb Since Westinghouse Did Not Have Necessary Technical Info or Expertise to Identify Cause or Solution | |
ML17289A697 | 26 June 1992 | Amend 1 to Part 21 Rept 158 Re gear-wear Induced Failures in engine-driven Jacket Water Pump in DSRV-16-4 Standby DG Sys. Initially Reported on 911029.Grand Gulf Station Observed Wear Characteristics in as Little as 500 Operating Hours | |
ML17289A752 | 9 July 1992 | Part 21 Rept Re Discrepancy in Procedure Used to Analyze Feedwater Controller Failure Event Using COTRANSA2 Code. Initially Reported by Siemens Nuclear Power Corp on 920617. Caused by Transient Analysis Error | Safe Shutdown Feedwater Controller Failure Fuel cladding |
ML17289A772 | 6 August 1992 | Interim Part 21 Rept Re Discrepancy in Procedure Used by Siemens Nuclear Power Corp to Analyze Feedwater Controller Failure Event w/COTRANSA2 Computer Code.Initially Reported on 920709.Analysis for Cycle 8 Revised & Incorporated | Safe Shutdown Minimum Critical Power Ratio Feedwater Controller Failure Fuel cladding |
ML17289A785 | 30 July 1992 | Part 21 Rept 23965:on 920730,determined That Limitorque motor-operators Had Upper Housing Cover Cap Screws Set at 100% of Mfg Rated Thrust Which Could Fail in Svc.Caused by Installation of Grade 1 or 2 Instead of Grade 5 or 7 Screws | |
ML17289A799 | 13 August 1992 | Part 21 Rept Re Limitorque Failure to Use Grade 5 Housing Cap to motor-operator Housing,Per Generic Ltr 89-10. Initially Reported on 920730.Seven GL 89-10 Category Valves Could Have Failed Due to Condition | |
ML17289A806 | 14 August 1992 | Part 21 Rept Re Undersized Yoke Clamps in Three Anchor Darling HPCS motor-operated Valves.Clamps Located on Return Lines to Condensate Storage Tanks & Suppression Pool.Clamps Will Be Replaced by Util by 921031 | Anchor Darling Nondestructive Examination |
ML17289A824 | 14 August 1992 | Part 21 Rept Re Undersized Yoke Clamps on Three HPCS motor- Operated Valves Supplied by Anchor/Darling Valve Co.Nde Will Be Performed on All Clamps to Determine If Condition Affects Valve Operability.Clamps to Be Replaced by 921031 | |
ML17289A859 | 8 July 1992 | Part 21 Rept Re Delta CPR Transient Analysis Error for Feedwater Controller Failure Event Performed by Siemens Nuclear Power Corp.Feedwater Transient Actually Occurred on 911119.Fuel Cladding Failure Not Possible | Safe Shutdown Feedwater Controller Failure Fuel cladding |
ML17290B200 | 26 May 1994 | Part 21 Rept Re Automatic Switch Co Replacement Solenoid Pilot Valve Diaphragms Supplied by GE Nuclear Energy.Unusual Combination of Scram Soleniod Pilot Valve Pressure & Exhaust Diaphragm Degradation Caused Failure of Rod to Scram | |
ML17291A235 | 15 July 1994 | Deficiency Rept Re Material Defects in Facility Containment Penetration Modules.Initially Reported on 940715.Modules Were Replaced | |
ML17291A257 | 22 July 1994 | Part 21 Rept Re Westinghouse Containment Penetration Modules Scotchcast Strain Relief & Varglas Insulated Conductors. Replaced Six of 12 RPIS Scotchcast/Varglas Modules & Three Scotchcast/Okonite Modules During Refueling Outage (R-9) | |
ML17292A214 | 8 May 1996 | Part 21 Rept Re Capscrews Supplied to Wppss by Now Defunct Cardinal Industrial Products,Lp (CIP) Having Nonconforming Hardness.Failed Lots & Any Remaining Product Found to Have Been Heat Treated by CIP Scrapped & Removed from Premises | |
ML17292B533 | 15 January 1999 | Part 21 Rept Re XL-S96 CPR Correlation for SVEA-96 Fuel. Defect Applies Only to WNP-2,during Cycles 12,13 & 14 Operation.Evaluations of Defect Performed by ABB-CE | |
ML17292B534 | 15 January 1999 | Part 21 Rept Re Incorrect Modeling of BWR Lower Plenum Vol in Bison.Defect Applies Only to Reload Fuel Assemblies Currently in Operation at WNP-2.BISON Code Model for WNP-2 Has Been Revised to Correct Error | Met Tower |
ML19210B221 | 29 March 1974 | Ro:On 740329,nuclear Svc River Water Pump Failed During Hot Functional Test Sequence.Caused by Pump Shaft Fracture in Pump Motor Shaft Coupling Area.Motor & Pump Returned to Respective Vendors for Insp & Repair | |
ML19210B257 | 12 December 1973 | Deficiency Rept Re Discrepancies Between Physical Cable Count & Cable Tray Loading Summary Quantities.Seven of 20 Safeguard Cable Trays Randomly Selected Did Not Agree W/ Summary.Caused by Revised Pull Clips W/Routing Change |