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| Issue date | Title | Topic | |
|---|---|---|---|
| ML20011F597 | 22 February 1990 | Part 21 Rept Re Solder Connections in Abb 27/59 Relays Deteriorated Due to Thermal Stress,Causing Bonding of Printed Wiring Pattern to Glass Epoxy Circuit Board.Interim Circuit Board W/Larger Pads & Higher Wattage Will Be Used | |
| ML20212N137 | 25 August 1986 | Part 21 Rept Re Potentially Defective Operation of Synchro-Start Products,Inc Synchronizing Speed Switches Used in Auxiliary Generating Equipment.Initally Reported on 860820.Next Rept Will Be Submitted by 860926 | |
| ML20151Y814 | 4 February 1986 | Part 21 Rept Re Colt-Pielstick Engine Tripping Out on High Speed When Started for Test Purposes at Seabrook.Caused by Source of Air Pressure Staying On.Engines Will Be Modified to Positively Vent Air from Rack Boost Cylinder | Safe Shutdown Boric Acid Shutdown Margin Packing leak High Radiation Area Ultimate heat sink Fire Barrier Anticipated operational occurrence Hydrostatic Probabilistic Risk Assessment Operating Basis Earthquake Design basis earthquake Process Control Program Stress corrosion cracking Fuel cladding Pressure Boundary Leakage Grace period Power change Unidentified leakage Overspeed trip Eddy-Current Testing Operational leakage |
| ML20137W261 | 30 September 1985 | Update to Part 21 Rept Re Insp for Cracked Welds Discovered in Generator Brackets.Insp for Callaway Unit 1 Postponed Until Next Refueling Outage (Probably Apr 1986).No Cracks Discovered During Insp at Wolf Creek | |
| ML20102C238 | 30 March 1985 | Site Stabilization Plan for Marble Hill Nuclear Generating Station,Units 1 & 2 | |
| ML20100E065 | 29 March 1985 | Part 21 Rept Re Series of Cracked Welds Discovered in Generators.Welds Occurred in Conical Baffle Section of Coil Guards.All Units Will Be Inspected.Affected Plants Listed | |
| NRC-85-3024, Part 21 Rept Re Possible Undetectable Failures in ESF Actuation Sys.Initially Reported on 791107.Possibility of Undetectable Failures Remain Under Certain Circumstances Despite Change in Hardware | 22 March 1985 | Part 21 Rept Re Possible Undetectable Failures in ESF Actuation Sys.Initially Reported on 791107.Possibility of Undetectable Failures Remain Under Certain Circumstances Despite Change in Hardware | |
| ML20084L115 | 8 May 1984 | Suppl 1 to Part 21 Rept Re United Electric Controls Fuel Oil Filter Differential Pressure Switches at Shoreham Plant. Switch Also Provided to Listed Plants.Corrective Actions Defined in 840328 Rept Will Be Applied | |
| ML20088A623 | 28 March 1984 | Part 21 Rept Re Abnormal Wear on Linear Converter Units Mfg & Furnished to Power Generating Facilities.Caused by Actuator Hunting.All Customers Provided Field Lubrication Procedure | |
| ML20081C511 | 9 March 1984 | Part 21 Rept Re Status Update Concerning Abnormal Wear on Linear Converters.Test Program Underway.Results of Investigation Indicate Excessive Wear Caused by Hunting of Control Circuitry | |
| ML20087P795 | 8 March 1984 | Interim Part 21 Rept Re Linear Converters Furnished by Pacific Air Products.Initially Reported on 840213.Vendor Investigation of Possible Causes of Excessive Wear Underway. Next Rept by 840730 | |
| ML20086L092 | 30 January 1984 | Part 21 Rept Re Linear Converter Device W/Possible Generic Defect.Initially Reported on 840116.Written Notifications Issued.Customer Responses Should Be Received by 840331.Final Rept Will Be Submitted by 840430 | |
| ML20086L098 | 17 January 1984 | Part 21 Rept Re Linear Converter Device W/Possible Generic Defect.Initially Reported on 840116.Preliminary Analysis Indicates Excessive Wear of Brass Shaft Guides.Next Rept Will Be Submitted within 90 Days.Supporting Info Encl | Boric Acid |
| ML20093L338 | 31 December 1983 | Annual Rept 1983,Public Svc of Indiana | |
| ML20083F821 | 19 December 1983 | Interim Deficiency Rept Re Diesel Generator Component Support Welds Accepted by Unqualified Inspector.Initially Reported on 831118.Evaluation Continuing.Next Rept Will Be Filed by 840413 | |
| ML20083D956 | 16 December 1983 | Supplemental Final Deficiency Rept Re Potential for Erroneous Steam Generator Level Indications During High Energy Line Breaks Inside Containment.Initially Reported on 800116.Item Not Reportable Under 10CFR50.55(e) | |
| ML20082U811 | 9 December 1983 | Interim Deficiency Rept Re Inadequate Penetration (Effective Throat) of Flare Bevel Welds.Initially Reported on 830809. Program Being Developed to Address Quality of Past Flare Bevel Welding.Next Rept Expected by 840511 | |
| ML20082J794 | 18 November 1983 | Interim Deficiency Rept Re Use of Incorrect Input Values in Design Calculations.Sargent & Lundy Requested to Perform Addl Work Re Incorrect Thermal & Seismic Header Displacements Used in Subsystem 1CS06 | |
| ML20082J340 | 18 November 1983 | Final Deficiency Rept Re Capstan Spring Malfunction in Pacific Scientific Model PSA-1 & PSA-3 Mechanical Shock Arrestors.Initially Reported on 831021.Shock Arrestors Returned to Pacific Scientific | |
| ML20082B736 | 10 November 1983 | Interim Deficiency Rept Re Inadequate Implementation of QA Program for Electrical contractor,Commonwealth-Lord Joint Venture.Initially Reported on 830211.Only One Original Audit Finding Remains Open.Next Rept Expected by 840120 | |
| ML20081M204 | 3 November 1983 | Interim Deficiency Rept Re Lack of QA Involvement in Fabrication of HVAC Ductwork Not Serving safety-related Function.Impairment Due to Failure of nonsafety-related Equipment.Next Rept Expected by 840401 | |
| ML20081H480 | 3 November 1983 | Followup to Part 21 Rept Re Potential Failure of Westinghouse Type SA-1 Relays (IE Info Notice 83-63).Addl Potential Problems Discussed in Encl Ltr Re Tantalum Capacitor Leaking Electrolyte.Not Reportable Per Part 21 | |
| ML20081G491 | 31 October 1983 | Interim Deficiency Rept Re safety-related Ductwork Already Installed W/O Engineering Evaluation Necessary to Meet Design Criteria for Seismic Event.Initially Reported on 831003.AE Performing Evaluation.Next Rept by 840309 | |
| ML20081H252 | 28 October 1983 | Final Deficiency Rept Re Design Changes to Structural Steel Fabrication Drawings for Erection & Insp of Structural Steel.Initially Reported on 820622.Drawings Reviewed & Changes Made to Bring Structural Steel Into Conformance | |
| ML20081B330 | 20 October 1983 | Interim Deficiency Rept Re Welding Techniques Not Covered by QA Program Used in Fabrication of safety-related Switchgear. Initially Reported on 820525.QA Manual Rewritten & Procedures Revised to Include Controls on Welding | |
| ML20081B244 | 20 October 1983 | Interim Deficiency Rept Re Westinghouse Centrifugal Charging Pumps at Min Allowable Flow Rate When RCS Reaches Value Below Pressurizer Safety Valve Setpoint Pressure.Initially Reported on 800509.Also Reported Per Part 21 | |
| ML20085K566 | 13 October 1983 | Interim Deficiency Rept Re Indications That Pullman Const Industries,Inc Failed to Adequately Implement QA Program. Initially Reported on 830228.Reinsp Continuing.Next Rept Will Be Submitted by 840210 | |
| ML20080R423 | 7 October 1983 | Final Rept Re Cracks in Welds at Stiffeners to Box Beams. Initially Reported on 830715.Welding Method Modified.Cracked Areas Ground Out & Repaired Using Approved Procedures | |
| ML20085L373 | 30 September 1983 | Independent Const Review of Marble Hill Units 1 & 2, Vol 3, Potential Finding Repts & Corrective Action Plans | |
| ML20085L365 | 30 September 1983 | Independent Const Review of Marble Hill Units 1 & 2, Vol 2, Program Results | Ultimate heat sink Nondestructive Examination Liquid penetrant |
| ML20085L360 | 30 September 1983 | Independent Const Review of Marble Hill Units 1 & 2, Vol 1, Executive Summary | Ultimate heat sink Nondestructive Examination |
| ML20080P173 | 30 September 1983 | Interim Deficiency Rept Re Potential for Spec/Design Changes to Remain Unincorporated in as-built Configuration of safety-related Equipment or Structures.Initially Reported on 811208.Procedure Changes in Progress.Next Rept by 840217 | |
| ML20078A503 | 16 September 1983 | Interim Deficiency Rept Re Potential Inadequacy of Southwest Steel Fabricators,Inc QA Program.Initially Reported on 830524.Review of Items Outside Sampling Program Continuing. Next Rept Will Be Submitted by 840113 | |
| ML20024F452 | 30 August 1983 | Final Deficiency Rept Re Missing & Deformed Wine Anchors & Cracked Welds Between Plate & Anchor in Primary Shield Wall. Initially Reported on 820818.Alternative Anchorage Sys Installed to Ensure Structural Integrity of Shield Wall | |
| ML20024F490 | 30 August 1983 | Interim Deficiency Rept Re Inadequate Penetration (Effective Throat) of Flare Bevel Welds.Initially Reported on 830809. Condition May Effect Numerous Cable Tray Supports.Scope & Severity Under Review | |
| ML20024F572 | 30 August 1983 | Final Deficiency Rept Re Deformed Wire Anchors Separated from Embedded Plate.Initially Reported on 821020.Results of Tests Indicated Cause Due to Axial Tensile Stress Applied to Welds.Item Not Reportable Per 10CFR50.55(e) | |
| ML20076F440 | 17 August 1983 | Interim Deficiency Rept Re Incorrect Use of Input Valves in Design Calculations.Initially Reported on 830701.Sargent & Lundy Evaluation Underway.Next Rept Will Be Submitted by 831118 | |
| ML20076D054 | 16 August 1983 | Final Deficiency Rept Re Possible Undetectable Failure Mode Existing in Westinghouse Solid State Protection Sys on-line Testing Circuits.Initially Reported on 820805.New Design Eliminates Problems | |
| ML20076C184 | 15 August 1983 | Interim Deficiency Rept Re Cracks in Welds at Stiffeners to Box Beams in Containment Bldg.Initially Reported on 830715.Cause Under Investigation.Next Rept Will Be Submitted by 831007 | |
| ML20077H688 | 3 August 1983 | Interim Deficiency Rept Re Inadequate Implementation of Commonwealth-Lord Joint Venture (Cljv) QA Program.Initially Reported on 830211.CLJV Disposition of Findings & Corrective Action Initiated.Next Rept by 831111 | |
| ML20024D608 | 29 July 1983 | Interim Deficiency Rept Re Incorrect Output Values in Design Calculations W/Potential to Decrease Allowable Stresses in Some Piping Subsystems.Sargent & Lundy Reviewing Stress Repts for Design Inconsistencies.Next Rept by 831118 | |
| ML20080B495 | 29 July 1983 | Nonproprietary Version of Independent Evaluation of Proposed Mods to Westinghouse D4,D5 & E Steam Generators | Operating Basis Earthquake Nondestructive Examination Stress corrosion cracking Eddy Current Testing Flow Induced Vibration Water hammer |
| ML20077G443 | 22 July 1983 | Interim Deficiency Rept Re Audit Findings Showing That Pullman Const Industries,Inc Inadequately Implemented QA Program.Initially Reported on 830228.Work on Corrective Actions Continuing.Next Rept by 831014 | |
| ML20077A827 | 14 July 1983 | Interim Deficiency Rept Re Welding Techniques Not Covered by Brown-Boveri Electric,Inc QA Program.Initially Reported on 830525.Brown-Boveri Revised Procedures to Include Controls on Welding Activities.Next Rept Expected by 831021 | |
| ML20077K925 | 14 July 1983 | Annual Financial Rept 1982 | |
| ML20077A912 | 13 July 1983 | Interim Deficiency Rept Re Six Sheared Pinion Keys in Limitorque Model SB-O Valve Motor Operators Installed by Westinghouse.Initially Reported on 820805.Item Not Reportable Per 10CFR50.55(e) | |
| ML20076L653 | 6 July 1983 | Interim Deficiency Rept Re Lack of QA Involvement in Fabrication of Seismic Category I HVAC Duct Work Not Serving safety-related Function.Initially Reported on 830607.Next Rept Expected by 831104 | |
| ML20024B746 | 30 June 1983 | Final Deficiency Rept Re Heat Sink Failures on Loop Power Supply Cards & Contact Bounce in Mercury Relay Utilized on Temp Channel Test Cards of Westinghouse 7300 Process Protection Sys.Initially Reported on 830603 | |
| ML20085A216 | 22 June 1983 | Interim Deficiency Rept Re Possible Southwest Steel Fabricator Nonconforming QA Program for Structural Steel Used in safety-related Areas.Initially Reported on 830524. Review Continuing.Next Rept Due by 830916 | |
| ML20072F404 | 16 June 1983 | Interim Deficiency Rept Re Design Changes Not Shown on Detail Drawings Used by Primary Civil Contractor (Newberg-Marble Hill).Initially Reported on 830622.Drawing Review Continuing.Next Rept by 830826 |