ML20051A730
| ML20051A730 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 04/30/1982 |
| From: | Wells D DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, EF2-58066, NUDOCS 8205140492 | |
| Download: ML20051A730 (1) | |
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Category:DEFICIENCY REPORTS (PER 10CFR50.55E & PART 21)
MONTHYEARNRC-97-0141, Deficiency Rept Re Malfunction of EDG Number 11 Automatic Voltage Regulator (AVR) Printed Circuit Board Rev B,Due to Failure of Operational Amplifier U8 Chip.Avr Board Rev B Was Sent Offsite to Independent Engineering Facility1997-12-23023 December 1997
[Table view]Deficiency Rept Re Malfunction of EDG Number 11 Automatic Voltage Regulator (AVR) Printed Circuit Board Rev B,Due to Failure of Operational Amplifier U8 Chip.Avr Board Rev B Was Sent Offsite to Independent Engineering Facility ML20211M6491997-10-0808 October 1997 Addenda 1 to Part 21 Rept Re Weldments on Opposed Piston & Coltec-Pielstick Emergency stand-by Diesel gen-set lube-oil & Jacket Water Piping Sys.Revised List of Potentially Affected Utils to Include Asterisked Utils,Submitted ML20211H7911997-09-30030 September 1997 Part 21 Rept Re Failure of Weldment Associated w/lube-oil Piping Sys on 970804 at Millstone,Unit 2.Root Cause Is Not Yet Known.Quality of Weldment Is Being Considered.Listed Util Sites Affected NRC-97-0005, Part 21 Rept Re 961113,EDG 11 Failed Surveillance Test 24.307.01 for LOP Coincident W/Loca.Avr Board Rev B Was Sent Offsite to an Independent Engineering Test Facility. 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Sensors to Be Replaced at 6-month Intervals & Tested Every 30 Days to Ensure Operability ML20215G2441987-06-16016 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 ML20211P7211987-02-23023 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 ML20206S0841986-06-30030 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 ML20211D8351986-06-0606 June 1986 Part 21 Rept Re Failure of Four External Closing Springs on MSIVs Supplied to Plant Due to Quench Cracks Developed During Mfg Process.Encl List Details Utils,Plants & Quantity & Size of Valves Supplied ML20195E4881986-05-23023 May 1986 Part 21 Rept Re Potential Failure of Ite/Gould Disconnect Switch,Type 7860 Ds Series.Instructions for Verification of Proper Operation of Switches Included in Notification to Plants.New Switches Available by 860901 ML20141A2501986-02-25025 February 1986 Part 21 Rept Re Two Broken Carrier Assemblies from NEMA Size 5 Contactor A103G12,preventing Proper Closing of Contactor. 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Added Thickness of Matl Will Eventually Cause Failure in Diffusion Membrane of Sensors.Sensors in Field Replaced ML20137S4441985-11-26026 November 1985 Part 21 Rept Re Unparallel Fitup of Nut to Mating Surface of Connecting Rod Cap & Nonperpendicular Faces of Nuts to Thread Pitch Line.Nuts & Bolts in Assembled Calvert Cliffs Onsite Spare Engine Will Be Replaced ML20198C8601985-10-23023 October 1985 Amended Final Deficiency Rept,Item 116 Re Potential Design Defect Which Allowed Freezing of Buried Piping Sys.Initially Reported on 840131.Constant Flow of 0.1 Gpm Through Affected Fire Protection Lines Will Be Maintained ML20210G9921985-08-13013 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 ML20099M1751985-03-0606 March 1985 Revised Final Deficiency Rept,Item 101 Re Debris in Piping Sys.Initially Reported on 850114.Items Removed & Safety Analysis Performed ML20108D5681985-03-0606 March 1985 Suppl to Final Deficiency Rept,Item 146,re Failure of Emergency Diesel Generators 11 & 12.Actions Taken to Minimize Stress & Deterioration of Bearings.Operating Procedures Modified & Quarterly Oil Filter Checks Planned ML20107K4701985-02-16016 February 1985 Final Deficiency Rept,Item 143 Re Deviations in Instrument Racks from Applicable Instrumentation & Controls Design Drawings.Initially Reported on 841219.Checklists Will Be Used During Verification of Drawing Rev Process ML20107H9371985-02-14014 February 1985 Final Deficiency Rept,Item 145 Re Tubing Configuration & Connection Hook Up Discrepancy.Initially Reported on 850115. 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Investigation of Cause,Scope & Necessary Corrective Action for Problem Continuing ML20101P2771984-12-18018 December 1984 Final Deficiency Rept,Item 141 Re Deviations from Specified Clearance Between Cable Trays & Vertical Support Members. Initially Reported on 841107.Item Not Reportable Per 10CFR50.55(e) ML20101M9621984-12-13013 December 1984 Amend to Final Deficiency Rept,Item 114 Re Possible Overpressurization of North RHR Hx.Initially Reported on 840124.Investigation & Analysis Determined HX Acceptable for Intended Function ML20101M9521984-12-12012 December 1984 Final Deficiency Rept,Item 139 Re Deficient Shop Weld in Fluid Head Structure.Initially Reported on 841015.Review of Stress Calculations Revealed Max Stress on Welds Does Not Exceed Allowable.Item Not Reportable Per 10CFR50.55(e) ML20100L2041984-11-30030 November 1984 Interim Deficiency Rept,Item 141 Re Deviations from Specified Clearance Between Cable Trays & Vertical Support Members.Initially Reported on 841107.As-built Tray/Hanger Clearance for Hangers & Cable Trays Acceptable ML20100N8651984-11-30030 November 1984 Amended Final Deficiency Rept,Item 116 Re Potential Design Deficiency Allowing Freezing of Buried Piping Sys.Walls Will Be Installed & Temp Monitored.Pipes Will Not Be Rerouted ML20100N8841984-11-30030 November 1984 Supplemental Final Deficiency Rept,Item 111 Re Design Deficiency on RHR Reservoir Freeze Over.Methods for Adding Heat to RHR Reservoir Clarified ML20100K7301984-11-27027 November 1984 Final Deficiency Rept,Item 129 Re Lack of Design Calculations for HVAC Duct Supports.Initially Reported on 840614.Supports & Base Plates Modified & Installation Discrepancies Documented on Nonconformance Repts ML20099F5011984-11-0505 November 1984 Final Deficiency Rept,Item 121 Re Water Found in HPCI Lube Oil Reservoir.Initially Reported on 840330.Byron-Jackson Field Mod Request 6337 Revised to Provide Proper Piping Configuration for Main Pump Seal ML20099E3911984-11-0303 November 1984 Final Amended Deficiency Rept,Item 76 Re Limitorque Switch Rotor Failures.Initially Reported on 820731.Repairs Performed Per Maint Instructions MI-M070,M179,M182,M203,M272 & M187 ML20099F5381984-11-0202 November 1984 Final Part 21/deficiency Rept Re Contaminated Hydraulic Fluid in Hydraulic Pipe Snubbers.Initially Reported on 821015.All Affected Hydraulic Pipe Snubbers Returned to Power Piping Co for Refurbishment ML20099F5261984-10-31031 October 1984 Final Deficiency Rept,Item 112 Re Poor Quality of Vendor Connection Workmanship in Emergency Diesel Generator Panels. 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[Table view]Safety Evaluation Supporting Amend 17 to License DPR-9 ML20217P3551999-10-22022 October 1999 LER 99-S01-00:on 990922,loaded 9mm Handgun Was Discovered on Truck Cargo Area of Vehicle Inside Protected Area.Caused by Inadequate Vehicle Search.Guidance in Procedures & Security Training to Address Multiple Vehicle Searches Was Provided ML20217M7121999-10-19019 October 1999 Safety Evaluation Supporting Amend 135 to License NPF-43 05000341/LER-1999-004, :on 990913,HPCI Sys Was Noted Inoperable.Caused by Failed HPCI Room Temp Switches.Replaced Temp Switches & HPCI Was Restored to Operable Status.With1999-10-13013 October 1999
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ru Mr. James G. Keppler, Regional Administrator Region III U.S. Nuclear Regulatory Ccumission 799 Roosevelt Road Glen Ellyn, Illinoir.- 60137
Subject:
Interim Report of 10CFR50.55(c) Item on Core Spray Pump Motor Damage. (#66)
Dear Mr. Keppler:
On April 1,1982, Project Quality Assurance's Mr. E.L. Thcznpson, Acting Supervisor-Construction Quality Assurance, telephoned Mr. J. Konklin of NRC Region III, to report on a problem with Core Spray Pump Motor damage at the Fermi 2 site.
This item deals with a gouge discovered in the shaft of a core spray pump motor. Because of the size and depth of the gouge, Edison Engineering decided that the possibility of internal damage existed and the motor was shipped off-site to a General Electric Repair Shop. Investigation is being conducted to determine the causc of the gouge. Reportability will be deter-mined by the results of the investigation.
Another report on this item, either interim or final, is scheduled to be sent to you on or before August 27, 1982.
If you have questions concerning this matter, please contact Mr. ii.A. Walker, Supervisor-Construction Quality Assur-ance.
Very truly yours, Ai 2 &
DAW /IIAW/cp cc: Mr. Richard DeYoung, Director Office of Inspection and Enforcement Division of Reactor Inspection Programs U.S. Nuclear Regulatory Ccumission Washington, D.C. 20555 Mr. Bruce Little, Resident Inspector U.S. Nuclear Regulatory Ccnmission 6450 North Dixie liighway f
Newport, Michigan 48166 sofo
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-53519 NM.10 1982 s
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