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| Issue date | Title | Topic | |
|---|---|---|---|
| ML20216J419 | 24 September 1999 | Part 21 Rept Re 990806 Abb K-Line Breaker Defect After Repair.Vendor Notified of Shunt Trip Wiring Problem & Agreed to Modify Procedure for Refurbishment of Breakers | Unanalyzed Condition Earthquake |
| 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 | |
| ML20206H297 | 5 May 1999 | Part 21 Rept Re Common Mode Failure for magne-blast Breakers.Vc Summer Nuclear Station Utilizes These Breakers in Many Applications,Including 7.2-kV EDG Electrical Buses | Unanalyzed Condition |
| RC-99-0087, Part 21 Interim Rept (SSH 99-0001) Re 990218 Failure of Circuit Breaker Located in Cubicle 14 of XSW1DB to Close During Surveillance Testing.Caused by Positive Interlock Angle Was Incorrect.Breaker Was Returned to GE Factory | 15 April 1999 | Part 21 Interim Rept (SSH 99-0001) Re 990218 Failure of Circuit Breaker Located in Cubicle 14 of XSW1DB to Close During Surveillance Testing.Caused by Positive Interlock Angle Was Incorrect.Breaker Was Returned to GE Factory | |
| 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 | |
| ML18106B093 | 25 February 1999 | Part 21 Rept Re Possible Defect in Swagelok Pipe Fitting Tee,Part Number SS-6-T.Caused by Crack Due to Improper Location of Heated Bar.Only One Part Out of 7396 Pieces in Forging Lot Was Found to Be Cracked.Affected Util,Notified | |
| ML18106B055 | 1 February 1999 | Part 21 Rept Re Possible Matl Defect in Swagelok Pipe Fitting Tee,Part Number SS-6-T.Defect Is Crack in Center of Forging.Analysis of Part Is Continuing & Further Details Will Be Provided IAW Ncr Timetables.Drawing of Part,Encl | |
| ML18106B044 | 29 January 1999 | Part 21 Rept Re Possible Defect in Swagelok Pipe Fitting Tee Part Number SS-6-T.Caused by Crack in Center of Forging. Continuing Analysis of Part & Will Provide Details in Acoordance with NRC Timetables | |
| ML18066A277 | 13 August 1998 | Part 21 Rept Re Deficiency in CE Current Screening Methodology for Determining Limiting Fuel Assembly for Detailed PWR thermal-hydraulic Sa.Evaluations Were Performed for Affected Plants to Determine Effect of Deficiency | |
| RC-98-0076, Final Part 21 Rept Re a DG EG-B for Vsns,As Followup to .Power Control Svcs of Engine Sys,Inc Provided Response on 980318.Evaluation Concludes That Failure of EG-B Is one-time non-repeatable Failure | 17 April 1998 | Final Part 21 Rept Re a DG EG-B for Vsns,As Followup to .Power Control Svcs of Engine Sys,Inc Provided Response on 980318.Evaluation Concludes That Failure of EG-B Is one-time non-repeatable Failure | |
| ML20212H142 | 2 March 1998 | Interim Part 21 Rept SSH 98-002 Re EG-B Unit That Was Sent to Power Control Svcs for Determination of Instability & Refurbishment of a Dg.Cause of Speed Oscillations Unknown. Completed Hot Bore Checks on Power Case | |
| ML20199E639 | 28 January 1998 | Part 21 Rept Re Failure of EG-A Control Serial Number 1425251 on 980109.Engine System Incorporated Has Been Notified of Situation & Understands That Part 21 Notification Being Submitted Based on Coc | |
| ML18065B135 | 6 January 1998 | Part 21 Rept Re Use of Deltstrat Code for RCS Flow Rate Determination.Code Corrects for Temps to Determine Hot Leg Bulk Coolant Temp | |
| RC-97-0253, Follow-up Part 21 Rept SSH 960004 Re Defect Determined Not to Be Potentially Associated W/Substantial Safety Hazard (Ssh).Westinghouse Determined That SSH Reportable Under 10CFR21 Does Not Exist Based on Listed Info | 15 December 1997 | Follow-up Part 21 Rept SSH 960004 Re Defect Determined Not to Be Potentially Associated W/Substantial Safety Hazard (Ssh).Westinghouse Determined That SSH Reportable Under 10CFR21 Does Not Exist Based on Listed Info | |
| ML20203J252 | 1 December 1997 | Deficiency Rept Re Failed Mdr Relays at Entergy Operations Inc,Waterford 3 Nuclear Generation Station.Caused by Contaminated Grease.Housekeeping Procedures Formalized & Added Enclosed Booth Isolating Mdr Final Assembly | |
| LD-97-033, Part 21 Rept Re Defect in Potter & Brumfield Mdr Relays, Models 170-1 & 7032.Extended Problem to Include All Mdr Relay Models W/Date Codes 93XX-95XX.Root Cause Analysis, Written Rept & Recommended Corrective Actions Due by 971201 | 20 November 1997 | Part 21 Rept Re Defect in Potter & Brumfield Mdr Relays, Models 170-1 & 7032.Extended Problem to Include All Mdr Relay Models W/Date Codes 93XX-95XX.Root Cause Analysis, Written Rept & Recommended Corrective Actions Due by 971201 | |
| LD-97-028, Part 21 Rept Re Contamination of Lubricant Which Has Led to Hardening of Lubricant in Certain Potter & Brumfield Mdr Relay Models 170-1 & 7032.Will Distribute Copy of Rept to Utils Having ABB-CE Designed Nuclear Steam Supply Sys | 13 October 1997 | Part 21 Rept Re Contamination of Lubricant Which Has Led to Hardening of Lubricant in Certain Potter & Brumfield Mdr Relay Models 170-1 & 7032.Will Distribute Copy of Rept to Utils Having ABB-CE Designed Nuclear Steam Supply Sys | |
| LD-97-024, Part 21 Rept Re Error in Energy Redistribution Factor Used in LOCA Analysis for Listed Plants for Which ABB-CE Performed Analysis.Issued Recommendations Info Bulletin 97-004 | 14 August 1997 | Part 21 Rept Re Error in Energy Redistribution Factor Used in LOCA Analysis for Listed Plants for Which ABB-CE Performed Analysis.Issued Recommendations Info Bulletin 97-004 | |
| 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 |
| NSD-NRC-97-5093, Part 21 Rept Re W Identified Defects That Could Create Substantial Safety Hazard Should Defect Remain Uncorrected. Plans to Complete Proper Refurbishment of All of Returned Breakers Being Established | 14 May 1997 | Part 21 Rept Re W Identified Defects That Could Create Substantial Safety Hazard Should Defect Remain Uncorrected. Plans to Complete Proper Refurbishment of All of Returned Breakers Being Established | |
| 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 |
| ML20135E381 | 3 March 1997 | Part 21 Rept Re Output Drift W/Increasing Temperature on Several RTD Amplifiers Noted During Installation of RTD by-pass Mod at Station.Action to Identify All Circuit Cards W/Affected Date Codes,Identified | |
| 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 | |
| ML20132C075 | 13 December 1996 | Part 21 Rept Re Testing of Six HFD3045 & HFD3060 Molded Case Circuit Breakers w/125 Volt DC Shunt Trip Devices.Identified Incorrectly Installed DC Shunt Trip Units & Are in Process of Being Returned to Vendor | |
| ML20138Q279 | 13 December 1996 | Part 21 Rept Re Notification on Model 763 Wire Failures.Itt Barton Presently Investigating Understanding of Situation & Intends to Identify Suitable Repair,Can Be Implemented in Field | Coatings |
| ML18065B011 | 18 October 1996 | Part 21 Rept Re Application of Certain Aspects of ABB-CE Safety Analysis Methodology | |
| ML20117K973 | 10 September 1996 | Follow-up Part 21 Rept of Re Failures of Waterford 3 Dedication Testing Process of Seven Commercial Grade Barksdale Pressure Switches | Commercial Grade Dedication |
| ML20134L168 | 31 July 1996 | Part 21 Rept Re Failure of Itt Barton Model 763 Pressure Transmitters.Itt Barton Has Not Established Root Cause But Is in Process of Evaluating Failure | |
| ML20116C703 | 29 July 1996 | Part 21 Rept Re Failures Identified by Waterford 3 Dedication Testing Process of 7 Commercial Grade Barksdale Pressure Switches | Commercial Grade Dedication |
| ML20115F708 | 15 July 1996 | Part 21 Rept Re Failures of Abb/Ite 27N Relays.Abb Has Not Established Root Cause for What Appears to Be Repetitive Failure of U5 Timer | |
| RC-96-0157, Part 21 Rept Re Nozzle Weld Defects in Chemical & Vol Control Sys Connections at RCP Seal Injection Nozzles & Ccws Connections at RCP Thermal Barrier Heat Exchanger Inlet & Outlet Nozzles Supplied by W | 17 June 1996 | Part 21 Rept Re Nozzle Weld Defects in Chemical & Vol Control Sys Connections at RCP Seal Injection Nozzles & Ccws Connections at RCP Thermal Barrier Heat Exchanger Inlet & Outlet Nozzles Supplied by W | |
| ML20112G387 | 4 June 1996 | Potential Part 21 Rept Re Capscrews W/Trace Code of K7 Mfg by Cardinal Industries (Now Known as Accutech) & Distributed by Energy & Process Corp for Plant CP S/N 0194012.Pump/motor Would Remain Operational Throughout Worse Case Scenario | |
| ML20116C981 | 20 May 1996 | Part 21 Rept Re Defective Welds Originally Specified & Performed by W on Component Cooling Water Nozzles for RCP Seal Injection Lines | Through Wall Leak |
| 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 | |
| LD-96-009, Part 21 Rept Re Potential Instrumentation Decalibr at Low Power.Affected Utils Should Ensure That Log Power Channels Properly Calibr & cross-correlated to Linear Power Channels at 100% Reactor Power | 15 April 1996 | Part 21 Rept Re Potential Instrumentation Decalibr at Low Power.Affected Utils Should Ensure That Log Power Channels Properly Calibr & cross-correlated to Linear Power Channels at 100% Reactor Power | |
| ML20097J635 | 30 January 1996 | Part 21 Rept Re Intermittent Failure of DG Relay Mfg by Amerace Electronic Components.Suspect Relays at Plants Identified & Replaced.Amerace Indicated That Operators & QC Personnel Made Aware of Need for Proper Soldering | |
| ML20096E651 | 18 January 1996 | Part 21 Rept Re Failure of MOV Motor Pinion Gear Mfg by Limitorque at Byron Station.Replacement & Insp Activities Initiated for Potentially Impacted Populations of MOVs at Byron & Braidwood Stations | Time of Discovery |
| ML20094R739 | 28 November 1995 | Potential Part 21 Rept Re Ksv EDG Sys Mfg by Cooper-Bessemer Reciprocating Products Div,Div of Cooper Cameron Corp. Recommends That All Utils Verify Open Oil Passage in Assembly | |
| ML20082Q949 | 21 April 1995 | Part 21 Rept Re Notifying Commission of Potential Design Defect of Ksv EDG Sys | |
| RC-95-0040, Interim Part 21 Rept (SSH 940002) Re Failure of 27N Degraded Voltage Relay Mfg by Asea Brown Boveri | 15 February 1995 | Interim Part 21 Rept (SSH 940002) Re Failure of 27N Degraded Voltage Relay Mfg by Asea Brown Boveri | |
| RC-94-0308, Interim Part 21 Rept (SSH 940002) Re Failure of 27N Degraded Voltage Relay.Degraded Voltage Relay Returned to Mfg for Further Evaluation & Repair.Sc&G Expects to Complete Evaluation of 10CFR21 Reportability by 950217 | 2 December 1994 | Interim Part 21 Rept (SSH 940002) Re Failure of 27N Degraded Voltage Relay.Degraded Voltage Relay Returned to Mfg for Further Evaluation & Repair.Sc&G Expects to Complete Evaluation of 10CFR21 Reportability by 950217 | |
| ML20077D343 | 29 November 1994 | Part 21 Rept Re Suspect Master Connecting Rods & Contains Info Location in Engine for Rods | |
| ML20078G305 | 9 November 1994 | Rev to Part 21 Rept Re Potential Problem W/Master Power Connecting Rods.Vendor Recommends Listed Utils Perform Visual Insp of Master Rods to Determine Applicability of Rept | |
| ML20071J189 | 22 July 1994 | Final Part 21 Rept Re Cracks Found in Body to Bonnet Nuts on Copes-Vulcan Airoperated Valves.Operability Evaluation for Byron Units 1 & 2,of Affected Valves W/Nuts of Heat Numbers H & I Completed on 940622 | Time of Discovery |
| ML20073S954 | 27 June 1994 | Part 21 Rept Re Incorrect Matl Supply Discovered on Unshipped Order.Pump Div Will Notify Enertech W/ Recommendation That Items Supplied W/Incorrect Matl Be Removed & Destroyed | |
| ML20070A144 | 22 June 1994 | Part 21 Rept Re Conditions Which Affect Hydraulic Valve Operators Supplied by Bw/Ip to Enertech Co & Listed Utils. Vendor Will Notify Enertech W/Recommendations That All Items Supplied W/Incorrect Matl Be Removed & Destroyed | |
| LD-94-019, Suppl Part 21 Rept Re Notification of Potential Defect in motor-driven Relays Supplied by ABB-CE to Waterford Steam Electric Station Unit 3.Entergy Oparations Aware of Info | 16 March 1994 | Suppl Part 21 Rept Re Notification of Potential Defect in motor-driven Relays Supplied by ABB-CE to Waterford Steam Electric Station Unit 3.Entergy Oparations Aware of Info | |
| LD-93-177, Part 21 Rept Re Potter & Brumfield motor-driven Relays Models 7032,7033 & 7034 Supplied by ABB/C-E to Entergy Operations Waterford Steam Electric Station,Unit 3.Eighty- Two Percent of Affected Relays Tested | 23 December 1993 | Part 21 Rept Re Potter & Brumfield motor-driven Relays Models 7032,7033 & 7034 Supplied by ABB/C-E to Entergy Operations Waterford Steam Electric Station,Unit 3.Eighty- Two Percent of Affected Relays Tested | Commercial Grade Dedication |
| ML20059L986 | 11 November 1993 | Part 21 Rept Re Deviation Wherein Fully Open Butterfly Valve Located 15 Pipe Diameters Upstream of Sensors Was Disturbing Flow Profile Enough to Cause Ultrasonic Meter to Indicate 3 to 4% Low.Customers Notified & Valve Removed | |
| RC-93-0251, Follow-up to 930521 Interim Part 21 Rept SSH 930003 Re Spare Model D26 Type M Relays Mfg by Cutler-Hammer & Supplied by Vitro Corp.All Affected Relays in storage,35 Rejected & Will Not Be Used in Any in-plant Application | 28 September 1993 | Follow-up to 930521 Interim Part 21 Rept SSH 930003 Re Spare Model D26 Type M Relays Mfg by Cutler-Hammer & Supplied by Vitro Corp.All Affected Relays in storage,35 Rejected & Will Not Be Used in Any in-plant Application |