Semantic search
Jump to navigation
Jump to search
| Issue date | Title | Topic | |
|---|---|---|---|
| ML18066A330 | 11 November 1998 | Part 21 Rept Re Potential Safety Hazard Associated with Wrist Pin Assemblies for FM-Alco 251 Engines at Palisades Nuclear Power Plant.Caused by Insufficient Friction Fit Between Pin & Sleeve.Supplier of Pin Will No Longer Be Used | |
| 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 | |
| ML18066A171 | 1 June 1998 | Part 21 Rept Re Impact of RELAP4 Excessive Variability on Palisades Large Break LOCA ECCS Results.Change in PCT Between Cycle 13 & Cycle 14 Does Not Constitute Significant Change Per 10CFR50.46 | |
| 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 | |
| ML17264A938 | 10 July 1997 | Deficiency Rept Re Potential Safety Hazard Associated w/FM-Alco 251 Engin,High Pressure Fuel tube-catalog: 4401031-2 in Which Dual Failure Mode Exists.Caused by Incorrect Forming Process | |
| 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 | |
| ML18065B011 | 18 October 1996 | Part 21 Rept Re Application of Certain Aspects of ABB-CE Safety Analysis Methodology | |
| ML18065A500 | 15 February 1996 | Part 21 Rept Re Hex Bolts Mfg by Cardinal Industrial Products (Cip).Aerofin Will Provide Replacement Bolts for Bolts in Question If Util Notify Aerofin in Writing within 30 Days of Date of ltr.10CFR21 Rept from CIP Encl | |
| ML18065A144 | 4 October 1995 | Part 21 Rept Re Fastener Products (Hex Bolts) Mfg by Cardinal Industrial Products.Bolts Used as Header Cover Plate Bolts in Safety Related Containment Air Cooler Replacement Cooling Coils Furnished by Aerofin Corp to CPC | |
| ML18064A884 | 30 August 1995 | Part 21 Rept Re Presence of Hardwired Connection in Each of Four Containment High Pressure Trip Logic Circuits.Jumpers Removed in Slot 11 of Interconnection Module Assemblies in All Four Channels | |
| ML18058B902 | 1 July 1993 | Part 21 Rept Re Potential Defect in Vicor Corp mini-mod Dc/ DC Converter Modules.Deficiency Identified During Failure Analysis of Subj Modules While in Svc at Palisades in Apr 1993.Affected Dc/Dc Converter Modules at Plant Replaced | |
| 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 |
| 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 | |
| ML18058B020 | 24 August 1992 | Part 21 Rept Re 920513 & 0701,premature Lifting of Farris Safety Relief Valve RV-3128 & SI Tank T-82B Relief Valve. Initially Reported on 920701.Caused by Misalignment of Spring Adjustment Screw Bore.Bonnet & Spring Replaced | Boric Acid |
| ML18058B005 | 30 July 1992 | Part 21 Rept 23967:on 920513 & 0701,Farris Relief Valve RV-3128 & SI Tank Relief Valve T-82B Lifted Prematurely. Caused by Misalignment of Spring Adjustment Screw Bore in Valve Bonnet.Util Has 23 Subj Valves in Facility | |
| ML18058A455 | 15 May 1992 | Part 21 Rept Re Allis Chambers Switchgear Breakers Refurbished by Sitek of Milwaukee.Original Procurement of Breakers Before IEEE Stds Were Developed.Breakers Sent to Sitek of Milwaukee for Refurbishment | |
| ML18058A413 | 23 April 1992 | Part 21 Rept Re Improperly Terminated Wires on Closing Relay for 2,400-volt Switchgear Mfg by Allis Chalmers & Refurbished by Sitek of Milwaukee.Corrective Actions Not Yet Determined.Palisades Only Facility W/Subj Defect | |
| ML18054B468 | 27 February 1990 | Part 21 Rept Re Defective PORV Block Valve W/Limitorque Actuator Type SMB-00-25.Caused by Missing Pin That Connects Limit Switch Drive Gear to Main Actuator Drive Train.Valve Actuator Disassembled to Find Cause of Malfunction | |
| 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 | |
| ML18054B093 | 9 November 1989 | Part 21 Rept Re Siemens-Allis Breaker mis-wired During Refurbishment Resulting in Blowing of Breaker Fuse.Caused by Vendor Error.Vendor Corrected Drawing File | |
| ML18054B133 | 6 November 1989 | Part 21 Rept Re Defect in Rockbestos Electrical Cable W/ Incorrect Shield Matl Supplied to Plant.Util Has Identified & Dispositioned Affected Cable Onsite.Rockbestos Has Shipped Replacement Cable & Authorized Return of Defective Cable | |
| ML18054A471 | 22 December 1988 | Part 21 Rept Re Deficiencies in Sample-Webtrol,Inc Masoneilan Valve Parts.Initially Reported on 881021.All Suspect Matl Remaining in Warehouse Pulled & Being Controlled | |
| ML18053A673 | 18 November 1988 | Part 21 Rept Re Potential for Counterfeit Masoneilan Valve Parts Being Supplied to Commercial Nuclear Facilities. All Identified Parts from Plant Named in 881021 Rept Segregated & Replaced.Independent Investigation Underway | |
| ML18054A396 | 21 October 1988 | Part 21 Rept Re Masoneilan Valve Parts Supplied by Sample- Webtrol,Inc Not Meeting Specs.Initially Reported on 881018. Matl in Warehouse Pulled & Location of Issued Matl Being Identified for Disposition or Replacement | |
| ML20127L452 | 21 October 1988 | Part 21 & Deficiency Rept Re Info on Discovery That Some Masoneilan Valve Parts Supplied by Samole-Webtrol Inc Are Not Genuine.Also Confirms 881018 Telcon Rept Re Notification Criteria of 10CFR21.21(b)(2) | |
| ML18054A307 | 25 May 1988 | Part 21 Rept Re Failure of Ashcroft Glycerin Filled Bourdon Tube Pressure Gauges That Failed at Pressure within Operating Range.Caused by Separated Weld.Faulty Gauges Replaced | |
| ML18053A389 | 20 May 1988 | Part 21 Rept Re Missing Cotter Pin in Ite Breaker Trip Mechanism Resulting in Breaker Failing to Close.Initially Reported on 880513.Breaker Repaired,Cotter Pin Inserted & Breaker Reinstalled | |
| ML18053A364 | 2 May 1988 | Part 21 Rept Re Inaccurate 1,000 Ppm Boron Std Used to Standardize Titrant Used for Boron Concentration Analysis. Initially Reported on 880429.All Suspect Matl Removed & Labeled Not for Use | Boric Acid |
| ML20215G244 | 16 June 1987 | Part 21 Rept Re Failure of Load Sequencing Equipment Supplied in Aug 1977 During Scheduled Testing.Caused by Open Electrical Connection on One Crimp Lug.Since 1978,insulated Lugs Used on All Equipment | |
| ML20209G191 | 13 August 1986 | Part 21 Rept Re Enerfab,Inc Containment Bldg Emergency Escape Airlock Design Deficiency.Initially Reported on 860724.Two Actuating Cams for Inner & Outer Equalizing Valves Modified | |
| 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 | |
| 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 | |
| ML20087F428 | 29 February 1984 | Part 21 Rept Re Apparent Design Deficiency in Siemens Allis Model MA-205B Stored Energy Circuit Breaker.Breaker Insp & Hold Down Device Orientation Will Be Complete by 840401. Determination of Permanent Fix & Implementation by 840601 | |
| ML20083E188 | 14 December 1983 | Supplemental Part 21 Rept Re Incorrect Boron Stds Purchased from Jt Baker Chemical Co.Initially Reported on 821222. Independent Evaluation Revealed Ph of Boron Std Too Low. Titration Procedure Appropriate & Will Continue to Be Used | |
| ML20080N970 | 30 September 1983 | Part 21 Deficiency Rept Re Defective ITT-Grinnell Hydraulic Snubbers.Initially Reported in 830928 Telcon.Deficient Snubber Valve Blocks Will Be Remachined & Snubbers Rebuilt | |
| ML20072N989 | 8 July 1983 | Interim Part 21 Rept Confirming 830705 Telcon Re Anomalies in Artificially Aged Apparatus (Using Ahrrenius Methodology W/Elevated Temp Aging).Deficiency Found During Qualification Testing for IEEE 323-1974.Draft Notices Encl | |
| ML20028C252 | 22 December 1982 | Part 21 Rept Re Jt Baker Chemical Co Defective 1,000 Ppm Boron Std Used for Standardization of Sodium Hydroxide to Determine Primary Coolant Sys Boron Concentration.Initially Reported 821220.Another Supplier Used | Boric Acid |
| ML20041F191 | 3 March 1982 | Part 21 Rept Re Defective Diesel Generator Governor Mfg by Woodward Governor Co Initially Reported 820226.Lock Washer & Nut Missing from Shutdown Solenoid & Broken Nut Found Inside Assembly.Governor Replaced & Returned for Repair | |
| ML20038C674 | 3 December 1981 | Part 21 Rept Re Weld Fractures Possibly Attributable to Modified Installation Procedure for Mounting of Battery Rack.Encl Notices Have Been Sent to Facilities Receiving Similar Frames for L Size Cell Racks | |
| ML20038A871 | 23 November 1981 | Advises That Sectioned Frame Welds Will Be Examined on Receipt from Bechtel,Compared W/Welds on Rack Qualified at Wyle Labs on 761116 & Examined in Light of Installation Conditions Observed by C&D Personnel at Site 811014-15 | |
| ML20011A579 | 21 October 1981 | Part 21 Rept Re Welded Subassemblies Found to Have Welds W/Lack of Acceptable Weld Deposit to Base Metal Fusion, Initially Reported 811020.Replacement Racks Have Been Fabricated & Are Being Installed | |
| ML18045A820 | 17 October 1980 | Part 21 Rept Re Pipe Supports W/Partially or Totally self- Aligning Rod End Bushings.Info Submitted to Other Bechtel Power Divs on 801008 for Review.Rept Will Be Provided If Defect Applies to Other Bechtel Projects | |
| ML18045A802 | 8 October 1980 | Part 21 Rept Re Pipe Supports W/Partially or Totally Disengaged self-aligning Rod End Bushings Furnished by Itt Grinell,Corner & Lada,Pacific Scientific-Kintech Div & NPS Industries | |
| ML19270G477 | 11 May 1979 | Natl Pollution Discharge Elimination Sys 790507 Noncompliance Notification Re Excessive Neutralizer Tank Discharge.Caused by Operating Errors.Discharge Procedures Discussed W/Operators | |
| ML19290A473 | 17 August 1973 | Deficiency Rept Re Grease Leakage Discovered on 730720 from 2090P Casing Filler Mfg by Viscosity Oil Co Into Vertical Tendon Conduits.Liner Plate Checked & No Bulging or Buckling Found.Samples of Leaking Matl Taken |