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| Issue date | Title | Topic | |
|---|---|---|---|
| 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 | |
| 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 | |
| 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 | |
| ML20081F609 | 23 April 1991 | Part 21 Rept Re Edward Controlled Closure Check Valves & Testable Piston Check Valves Dashplate Bolt Failures Due to Rapid Valve Opening or Impulsive Differential Pressure Surge Across Dashplate.Design Changes Recommended | |
| ML20246C088 | 21 June 1989 | Potential Significant Deficiency Rept Re Possibility That Atmospheric Dump Valves May Fail to Open.Caused by High Bonnet Pressure Not Permitting Actuator to Open Valve.Plug Should Be Reworked to Enlarge Pilot Flow Area | |
| ML20246K740 | 26 April 1989 | Part 21 Rept Re Incorrectly Stamped Name Plates on Certain Asco Nuclear Qualified Valves.Vendor Will Contact Each Affected Facility & Furnish Correctly Stamped Plates & in Near Future Discontinue Sale of Rebuild Kits for Valves | |
| ML20204H148 | 14 October 1988 | Final Deficiencty Rept CDR 84-00-13 Re Portions of Control Circuits Not Considered When Evaluating Total Circuit Length for Voltage Drop Calculations.Initially Reported on 840830. Independent Review Confirms Corrective Actions Completed | |
| ML20235Y290 | 9 October 1987 | Part 21 Rept Re Potential Hazard That Magnet in Class J Industrial Control Relays May Jam When Called to de-energize & Control Circuits May Not Open.Special 120-volt Coil Removed & New Relay Installed | |
| ML20214A136 | 12 May 1987 | Part 21 Rept Re Capacity of Thermal Compensating Accumulator Being Insufficient to Compensate for Thermal Expansions of Hydraulic Fluid During Full Ambient Temp Transient Required by Customer Specs.Interim & Permanent Mods Identified | |
| 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 | |
| ML20207J211 | 26 November 1986 | Final Deficiency Rept CDR-86-00-09 Re Ambient Temp Compensation Calibr Shifts in Veritrak Group a Transmitters. Initially Reported on 860912.Existing Transmitters Will Be Replaced W/Rosemount Transmitters | |
| ML20214R898 | 18 September 1986 | Supplemental Final Deficiency Rept CDR 85-00-13 Re Lining Defects in Svc Water Sys.Piping Spool Insp Will Be Performed Immediately Due to Exceeding Originally Anticipated Insp Interval | |
| ML20214Q866 | 16 September 1986 | Final Deficiency Rept CDR 85-00-20 Re Failure of Fire Damper to Close Under Design Airflow Conditions.Initially Reported on 851206.Calculations to Determine Which Fire Dampers Could Fail Under Dynamic Flow Conditions Taken | Safe Shutdown Fire Barrier |
| ML20210F474 | 16 September 1986 | Part 21 Rept Re Possible Sticking in Closed or Partially Open Position on Dresser 3050 Diaphragm Valves.Initially Reported on 850118.Disc Caps,Including Chamfers on Outside Diameter,Will Be Modified | |
| ML20210F408 | 12 September 1986 | Interim Deficiency Rept (CDR 86-00-09) Re Excessive Calibr in Veritrak/Tobar Transmitters.Initially Reported on 860805. Destructive Exam Testing Underway.Nrc Will Be Informed of Status Upon Completion of Tests | |
| 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 | |
| ML20206U148 | 21 August 1986 | Final Deficiency Rept (CDR 81-00-10) Re Inconsistency in Electrical Cable Tray Support Bolts Design.Initially Reported on 810727.Required Mods to Conduit & Cable Tray Support Connections Installed & Inspected | Design basis earthquake |
| ML20203M027 | 14 August 1986 | Final Deficiency Rept (CDR 86-00-08) Re Failure to Ensure Adequate Torquing of Cable Tray hold-down Clamps.Initially Reported on 860716.Clamps Retorqued & Installation & Insp Criteria Revised | |
| ML20212N065 | 25 July 1986 | Final Deficiency Rept CDR 84-00-06 Re Components & Component Supports Spanning Expansion Joints.Initially Reported on 840405.Field Walkdown of All Bldgs Performed & Design Changes Issued to Assure Sys & Structure Integrity | |
| ML20204J313 | 18 July 1986 | Final Deficiency Rept (CDR-86-00-07) Re Valve Alignment of ECCS During Cold Leg Recirculation Phase of post-LOCA ECCS Operation.Initially Reported on 860606.Low Head Safety Injection Sys Valve Alignment Will Be Used & FSAR Updated | |
| ML20212C750 | 18 July 1986 | Interim Deficiency Rept CDR 86-00-08 Re Cable Tray Hold Down Clamps.Initially Reported on 860716.Program to Retorque All Cable Tray Hold Down Clamps in safety-related Areas Implemented.Next Rept by 860815 | |
| 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 | |
| ML20205B393 | 30 June 1986 | Final Deficiency Rept CDR-86-00-02 Re Ambient Temp Drift Problem W/Veritrak Pressurizer Pressure Transmitters. Initially Reported on 860307.Tobar Pressurizer Pressure Transmitters Installed | |
| ML20212D519 | 24 June 1986 | Final Deficiency Rept CDR 86-00-06 Re Westinghouse W-24 Operational Amplifiers.Initially Reported on 860605. Westinghouse Nal Cards Having W-24 Operational Amplifiers W/Dated Code 8101 Replaced | |
| ML20211Q273 | 16 June 1986 | Final Deficiency Rept CDR 84-00-17 Re Insufficient Fillet Weld Size in Coped Area of Structural Steel I-beams Supplied by Cives Steel.Initially Reported on 841026.Mods Issued & Completed to Ensure Integrity of Structural Member | |
| ML20207H477 | 13 June 1986 | Final Deficiency Rept CDR-79-00-04 Re Potential Undetectable Failure in P-4 Interlock Circuit of Esfas.Installation of Test Switches & Meters as Recommended by Westinghouse & Procedures for Performing Periodic Testing Completed | |
| ML20207H499 | 10 June 1986 | Final Deficiency Rept CDR-85-00-18 Re Possible Malfunction of Figure 3050 Diaphragm Valves Supplied by Dresser Industries.Initially Reported on 851023.Caused by Valve Disc Cap Not Allowing Disc to Move.Mods to Disc Guides Complete | |
| ML20206F074 | 6 June 1986 | Final Deficiency Rept (CDR 86-00-03) Re Potential Malfunction of P-10 Permissive.Initially Reported on 860324. Verification That P-10 Permissive Properly Changes State Will Be Made by Observing Bistable Status Lights | |
| ML20211H407 | 6 June 1986 | Final Deficiency Rept (CDR 85-00-07) Re HVAC Design Defect. Initially Reported on 850409.Fifteen-ton Chiller Unit Added in Equipment Vault Stairways & Electrical Area Above | |
| ML20211H398 | 6 June 1986 | Final Deficiency Rept (CDR 85-00-16) Re Gauled Threads on Manual Handwheel Operators on safety-related Dampers Causing Operator & Damper to Seize.Initially Reported on 851017.Mods Recommended by Pacific Air Products Completed | |
| ML20211H384 | 5 June 1986 | Final Deficiency Rept (CDR 83-00-14) Re Supports for Svc Air Sys & Other Sys Carring non-nuclear Safety Designation. Initially Reported on 830714.Affected Lines Reviewed to Determine If Supports Should Be non-nuclear Seismic (NNS-1) | |
| ML20199F504 | 5 June 1986 | Interim Deficiency Rept (CDR 86-00-06) Re Excessive Shift of Calibr Trip Setpoints on Westinghouse W-24 Operational Amplifiers.Initially Reported on 860501.Amplifiers Will Be Replaced | |
| ML20206F077 | 3 June 1986 | Final Deficiency Rept (CDR 86-00-04) Re Potential Malfunction in 25 Kva Inverters Mfg by Elgar Corp Due to Improper Stacking of Cable Lugs.Initially Reported on 860509.Actions Complete for Unit 1 | |
| ML20206B729 | 28 May 1986 | Final Deficiency & Part 21 Rept (CDR 85-00-17) Re Potential for Gould-supplied Motor Control Starters to Bind or Seize Contact Carrier Assembly.Reinsp Conducted to Ensure That Washers Installed Under Contact Carrier | |
| ML20206B870 | 28 May 1986 | Final Deficiency Rept (CDR 84-00-13) Re Control Circuit Cable Lengths.Corrective Actions as Specified in Completed.Solutions Involved Rewiring W/Larger Conductors & Reconfiguration of Some Circuits | |
| ML20206B837 | 20 May 1986 | Final Deficiency Rept (CDR 85-00-04) Re Blocked Air Hose in Vent Lines from safety-related air-operated Actuators. Initially Reported on 850301.Unit 1 Air Hoses Replaced.Unit 2 Hoses Not Yet Installed | |
| ML20198N164 | 20 May 1986 | Final Deficiency Rept CDR 84-00-05 Re Overstressed Welds That Join Expansion Joint Assemblies to Fuel Transfer Tube. Initially Reported on 840427.Welds Reworked Per ASME III, Code Class 2 Criteria | |
| ML20198P350 | 20 May 1986 | Final Deficiency Rept CDR 84-00-08 Re Weld Deficiencies on Fisher Controls Valve Operator Bracket Welds.Initially Reported on 840419.Corrective Actions,Including Insp & Repair of Brackets,Completed | |
| ML20205R857 | 10 May 1986 | Final Deficiency Rept Re Emergency Feedwater Sys Design Flow Requirements.Initially Reported on 860425.Emergency Feedwater Pump Constant Flow Recirculation Line Replaced W/ New Safety Class 3 Recirculation Line for Each Pump | Safe Shutdown |
| ML20215M718 | 9 May 1986 | Interim Deficiency Rept (CDR 86-00-04) Re Improper Cable Lug Connections in 25 Kva Inverter.Initially Reported on 860401. Cable Lugs for Dc & Ac Power Supply Connections Will Be Determinated & Properly Reterminated | |
| ML20206C267 | 7 May 1986 | Interim Deficiency Rept (CDR 86-00-03) Re Potential Malfunction of Reactor Protection Sys Permissive P-10 Function Under Stated Circumstances.Initially Reported on 860324.Corrective Action in Incorporated | |
| ML20141E431 | 10 April 1986 | Final Deficiency Rept (CRD-85-00-13) Re Failure of Svc Water Sys Spool Linings,Piping Inserts & Valve Liner/Seats. Initially Reported on 850918.At Least One Piping Spool Will Be Removed for Insp of Coating During Each Outage | Ultimate heat sink Coatings |
| ML20141H979 | 10 April 1986 | Interim Deficiency Rept (CDR 86-00-02) Re Veritrak 76PH2 Pressure Transmitters Calibr Shifts.Initially Reported on 860307.Addl Rept Will Follow Upon Completion of Westinghouse Analysis | |
| ML20155F318 | 2 April 1986 | Final Deficiency Rept (CRD 85-00-11) Re Incorrect Short Time Delay Band Levers on Brown Boveri K-line Circuit Breaker W/ Overcurrent Trip Device.Initially Reported on 850731.Unit 1 Corrective Action Complete.Unit 2 Being Tracked | |
| ML20199J834 | 31 March 1986 | Final Deficiency Rept CDR 86-00-01 Re Design of Diesel Generator Air Start Sys.Initially Reported on 860220.Colt Industries Reset Electric Governor & Revised Starting Air Design to Vent Booster Air Via Pilot Air Connection | |
| ML20199H174 | 31 March 1986 | Interim Deficiency Rept CDR 85-00-19 Re Misapplication of Potter-Brumfield Type Mdr Relays.Initially Reported on 851216.Rectifier Assemblies Will Be Added to Circuitry to Convert Ac Back to Dc to Operate Dc Solenoid Valves | |
| ML20199G456 | 31 March 1986 | Interim Deficiency Rept (CDR 85-00-17) Re Binding of Contact Carrier Assembly in Gould Motor Control Starters.Initially Reported on 851118.Affected Starters Will Be Replaced or Modified | |
| ML20210E566 | 6 March 1986 | Interim Potential Deficiency Rept CDR 85-00-20 Re Failure of Fire Damper to Close Under Design Airflow Conditions. Initially Reported on 851206.Final Rept Will Be Submitted When Corrective Actions Completed | |
| ML20141N625 | 5 March 1986 | Final Deficiency Rept CDR-83-00-10 Re Westinghouse 7300 Process Protection Sys Ntc Card Relays.Initially Reported on 830617.Modified Ntc Printed Circuit Card Installed as Solution to Mercury Wetted Relay Contact Bounce Problem |