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| Issue date | Title | Topic | |
|---|---|---|---|
| ML20217N327 | 21 October 1999 | Part 21 Rept Re non-linear Oxygen Readings with Two (2) Model 225 CMA-X Containment Monitoring Sys at Bsep.Caused by High Gain Produced by 10K Resistor Across Second Stage Amplifier.Engineering Drawings Will Be Revised | |
| 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 | |
| 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 | |
| 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) | |
| 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 | |
| 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 | |
| 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 | |
| ML20095J306 | 24 April 1992 | Initial Part 21 Rept Re Defectively Installed Bolting in Emergency Diesel Generator Bldg Internal Wall Seismic Supports.Repairs to Reestablish Seismic Qualification of Walls Continuing & Emergency Buses Declared Inoperable | |
| ML20079G892 | 27 August 1991 | Part 21 Rept Re Failure of Normally Energized Asco Model L206-832 Solenoid Valves Due to Gelling of Lubricant (Dow Corning 550).Initially Reported on 910826 Via Telcon.Ler 2-91-005 Re ESF Actuations Caused by Transient Encl | Half scram Stroke time Operational leakage |
| BSEP-91-0191, Part 21 Rept Re Discrepancy Noted Between Torque Indicated by motor-actuator Characterization Sys & Output Torque Measured by Limitorque Actuator Test Stand.Initially Reported on 910426.Vendor Contacted Re Software Problem | 29 April 1991 | Part 21 Rept Re Discrepancy Noted Between Torque Indicated by motor-actuator Characterization Sys & Output Torque Measured by Limitorque Actuator Test Stand.Initially Reported on 910426.Vendor Contacted Re Software Problem | |
| ML20077A404 | 29 April 1991 | Deficiency Rept Re Possible Mfg Problems W/Certain Coils Used on Asco Nuclear Qualified Valves.Problems Discussed in NRC Info Notice 86-057.All Purchasers Will Be Notified & Replacement Product Will Be Offered If Item Still in Svc | |
| ML20043A609 | 27 April 1990 | Part 21 Rept Re Defective Axial Cracks in Pump Shaft in Region Immediately Above Impeller & in Reactor Recirculation Pumps.Probably Caused by Crack Growth as Thermal Fatigue. Technical Advisory Bulletin Will Be Sent to Each Util | |
| 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 | |
| ML20011D432 | 15 December 1989 | Suppl to Part 21 Rept Re Completion of Replacement of Unit 1 CR205 Series Auxiliary Contacts w/CR305 Contacts.Initially Reported on 871030.Implementation of Five of Six Auxiliary Contacts Extended Until 900131 | |
| ML19325E457 | 20 October 1989 | Part 21 Rept Re Potential Inconsistencies in Mac Diagnostic Sys Software.Licensee to Review All Smb,Sb & Sbd Size 3 Mac Torque Test Data Using Mac Software Version 2.96 to Insure That Torque Switch Settings Meet Valve Design Requirements | |
| BSEP-89-0342, Part 21 Rept Re Problem in Pump Suction & Discharge Valves of Standby Liquid Control Sys.Initially Reported on 890427. Evaluation Found Defect Consisting of Casting Flaws/Surface Irregularities in Valves | 1 May 1989 | Part 21 Rept Re Problem in Pump Suction & Discharge Valves of Standby Liquid Control Sys.Initially Reported on 890427. Evaluation Found Defect Consisting of Casting Flaws/Surface Irregularities in Valves | |
| BSEP-87-1205, Part 21 Rept & Deficiency Rept Re Defective GE CR205X Series Auxiliary Contacts.Initially Reported on 871027.Contacts for Loads Listed in Attachment 3 Will Be Replaced on Unit 1 by 880701 & by 881101 on Unit 2 | 30 October 1987 | Part 21 Rept & Deficiency Rept Re Defective GE CR205X Series Auxiliary Contacts.Initially Reported on 871027.Contacts for Loads Listed in Attachment 3 Will Be Replaced on Unit 1 by 880701 & by 881101 on Unit 2 | |
| ML20203D022 | 14 July 1986 | Part 21 Rept Re Air Monitoring Sys Probes Exhibiting Blue Tip Rather than Normal White Tip & Insensitive to Chlorine. Caused by Improper Handling/Storage.Advisory Bulletin Encl. Item Not Reportable Per Part 21 | |
| 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 | |
| ML20141N851 | 11 March 1986 | Part 21 Rept Re Valves W/Improperly Qualified Cardinal Industrial Products Corp Stock Matl Furnished to Listed Customers.Matl Deviated from ASME Section III,NCA-3800. Results of Test Repts of Stock Valves Forthcoming | |
| ML20140A528 | 19 December 1985 | Part 21 Rept Forwarding Ltr Sent to Customers Re Check Valves Missing Lock Welds on Hinge Supports or Hinge Support Capscrews,Per 851121 Request.List of Customers Receiving Ltr Also Encl | |
| BSEP-85-1850, Part 21 & Deficiency Rept Re 12 of 16 Rockwell Edward Valves Exceeding Leak Rate Criteria as Specified by Procurement Documentation.Initially Reported on 850705. Valves Returned to Vendor for Cause Determination | 18 October 1985 | Part 21 & Deficiency Rept Re 12 of 16 Rockwell Edward Valves Exceeding Leak Rate Criteria as Specified by Procurement Documentation.Initially Reported on 850705. Valves Returned to Vendor for Cause Determination | |
| ML20134Q174 | 29 August 1985 | Part 21 Rept Re Potential Maint Issues Associated w/Anker-Holth Snubbers.Owners of Anker-Holth Snubbers Will Be Informed of Problems & Sent Revs to Technical Instruction Manuals to Include Procedures for Seal & Fluid Maint | |
| ML20210G992 | 13 August 1985 | Part 21 Rept Re Failure of Isolated Worm Shaft Gear When Certain Critical Speeds Combined W/Repetitive Transfer of Actuator Clutch Mechanism from Manual (Handwheel) to Motor Drive Mode.Two Possible Solutions Noted | |
| ML20133N469 | 5 August 1985 | Part 21 Rept Re Raychem Wcsf Shrink Sleeving for Sensor/ Connecting Assembly of Safety Relief Valve Monitoring Sys. Testing & Retesting in Progress.Sensor Installation Utilizing Shrink Sleeving Recommended | |
| ML20125B161 | 6 June 1985 | Supplemental Part 21 Rept Re Addl Circuit Breakers,Furnished as Spares,W/Overcurrent Trip Devices That May Have Short Time Delay Band Lever.Items Require Insp & Replacement If Link Found Incorrect | |
| ML20093M239 | 3 October 1984 | Supplemental Response to Part 21 Rept Re Leak or Break on Certain Piping Sys Outside Pipe Tunnel.Initially Reported in Apr 1982.Mods to Resolve Deficiency Scheduled to Be Consistent W/Resolution of Environ Qualification Issue | Nondestructive Examination |
| ML20094D876 | 13 July 1984 | Second Interim Deficiency Rept,Item 160 Re Defective Shop Welds on Seismic Restraint Structures.Initially Reported on 840306.Next Rept Anticipated by 850331 | |
| BSEP-83-1260, Supplemental Response to Part 21 Rept Re Postulated Pipe Crack in Hpci,Rcic,Reactor Water Cleanup Sys & Main Steam Line Drains.Required Mods Will Be Installed to Meet Requirements of Environ Qualification Program | 26 April 1983 | Supplemental Response to Part 21 Rept Re Postulated Pipe Crack in Hpci,Rcic,Reactor Water Cleanup Sys & Main Steam Line Drains.Required Mods Will Be Installed to Meet Requirements of Environ Qualification Program | |
| BSEP-83-1220, Part 21 Rept Re Pipe Clamps for Snubber/Struts Oriented in off-axis Direction.Initially Reported on 830224 & by IE Info Notice 83-13.Clamps Will Be Replaced by End of Fall 1983 Refueling Outage | 22 April 1983 | Part 21 Rept Re Pipe Clamps for Snubber/Struts Oriented in off-axis Direction.Initially Reported on 830224 & by IE Info Notice 83-13.Clamps Will Be Replaced by End of Fall 1983 Refueling Outage | Design basis earthquake |
| ML20064L264 | 1 February 1983 | Interim Part 21 Rept Re Postulated Pipe Cracks.Initially Reported During Apr 1982.United Engineers & Constructors Evaluating Reactor Bldg Environ Rept & Developing Corrective Actions.Final Rept Expected by 830331 | |
| ML20069P010 | 30 November 1982 | Part 21 Rept Re Discrepancies Between Orientation of Snubbers as Shown on Pipe Support Details & Orientation as Used in Analysis of Record.Review of Supports,Design & Issue of Any Fixes Scheduled for Completion by 821201 for Unit 1 | |
| ML20069K413 | 15 October 1982 | Interim Part 21 Rept.Detailed Status of Corrective Actions Taken Will Be Sent by 821020 | |
| ML20063C766 | 17 August 1982 | Potential Part 21 Rept Re Defect Concerning Pipe Stress & Support Loads Exceeding Allowable Limits.Initially Reported on 820814.Piping Sys Structural Adequacy Not Jeopardized | |
| ML20062L629 | 17 August 1982 | Part 21 Rept Re Pipe Stress & Snubber Loads Exceeding Tech Spec for Main Steam & Safety Relief Valve Discharge Lines. Structural Integrity Will Be Assured by Listed Corrective Actions by 821015 | |
| ML20052G360 | 30 April 1982 | Part 21 Rept Re Leak or Break Outside Pipe Tunnel on Connections to Main Feedwater Lines Not Detected &/Or Terminated by Existing Sys.Supplemental Response Will Be Issued by 820831 | |
| ML20052A332 | 20 April 1982 | Part 21 Rept Re Apparent Lack of Control Over Issuance of Class II Piping,Fittings & Pressure Switches in Class I Applications,Initially Reported 820416.Task Force Organized to Classify Suspect Components.No Related Failures to Date | |
| ML20008G108 | 12 June 1981 | Part 21 Rept Re Failure of RHR Heat Exchanger Baffle Plates. Info Required Has Been Reported in LERs 1-81-32 & 2-81-49 | |
| ML19344F343 | 3 September 1980 | Part 21 Rept Re Leaks in Heat Exchanger Tubes of Calandria Type Radwaste Evaporator at Facility.Cause Attributed to Corrosive Attack.Evaporator Unit Out of Svc Pending Repair of Leaks in Tubes & Shell | |
| ML19330B860 | 20 July 1980 | Part 21 Rept Re Testing Failure of safety-related Pressure Switches in Toxic Gas Monitors for Chloride.Dwyer Instruments,Inc Notified of Potential Defect & Safety Analysis Requested |