TXX-4571, Deficiency Rept SDAR-195 Re Inadequate Conduit Support Sys. Initially Reported on 850906.Evaluation Completion Anticipated by 860201
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| ML20133E649 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 09/30/1985 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Hunter D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| SDAR-195, TXX-4571, NUDOCS 8510090468 | |
| Download: ML20133E649 (1) | |
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|---|---|
Category:DEFICIENCY REPORTS (PER 10CFR50.55E & PART 21)
MONTHYEARML18016A9011999-04-12012 April 1999
[Table view]Part 21 Rept Re Defect in Component of DSRV-16-4,Enterprise DG Sys.Caused by Potential Problem with Connecting Rod Assemblies Built Since 1986,that Have Been Converted to Use Prestressed Fasteners.Affected Rods Should Be Inspected ML20236V3121998-07-29029 July 1998 Final Part 21 Rept Re Enterprise DSR-4 & DSRV-4 Edgs.Short Term Instability Was Found During post-installation Testing & Setup as Part of Design mod/post-work Testing Process. 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Further Evaluation of Deviation Is Required & Will Be Completed by 971111 ML18153A1431997-06-10010 June 1997 Part 21 Rept Re Possible Machining Defect in Certain Stainless Steel Swagelok Tube Fitting Bodies.Facilities Have Been Notified About Possible Problem ML20140G4481997-05-0101 May 1997 Part 21 Rept Re Potential Defect in Component of Dsrv & Dsr Enterprise Standby Diesel Generator Sys.Recommends That Springs Be Inspected on Periodic Basis,Such as During Refueling Outages ML20115J3981996-07-22022 July 1996 Interim Part 21 Rept Re 3/4 Schedule 80 Pipe Furnished to Consolidated Power Supply.Investigation Revealed Only One Nuclear Customer Involved in Sale of Matl ML20115D2001996-07-0909 July 1996 Part 21 Rept Re Mfg Defect of Enterprise DSR-4 & DSRV-4 Edgs,Originally Mfg by Calcon Corp.Amot Control Corp Purchased Calcon Product Line & Maintains Design & Production.Valves Returned to Cooper Energy Svcs on 960131 ML20117G4641996-05-14014 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 ML20100L7411996-02-29029 February 1996 Final Part 21 Rept Re Fan Motor Bearing Indications,Updating Status of Evaluation of Deviation.Bearings for Unit 2 Fcus Inspected & No Linear Indications Noted.Unit 1 Fcu Bearings Will Be Inspected Prior to Upcoming Refueling Outage ML20097A5641996-01-31031 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 TXX-9603, Interim Part 21 Rept Re Linear Indication on Fan Motor Bearings Mfg by Fafnir.Bearings Provided as Spares for Four UPS Room Fan Coil Units.Further Evaluation Required & Evaluation Will Be Completed by 9602291996-01-29029 January 1996 Interim Part 21 Rept Re Linear Indication on Fan Motor Bearings Mfg by Fafnir.Bearings Provided as Spares for Four UPS Room Fan Coil Units.Further Evaluation Required & Evaluation Will Be Completed by 960229 ML20092H3641995-09-13013 September 1995 Part 21 Rept Re 3/4 Inch ASME Section III Class 2 Ball Valves Supplied by Canadian Worcester Controls Ltd (Cwcl) ML20064G3391994-03-0707 March 1994 Part 21 Rept Re RTP Universal I/O Controller Interface Card Utilized in Universal I/O Controller,Supplied for Installation at Comanche Peak & Yonggwang Nuclear Power Plant,Units 3 & 4.Two Filter Capacitors Added to Design ML20064G3261994-03-0707 March 1994 Part 21 Rept Re RTP Universal I/O Controller Interface Card Utilized in Universal I/O Controller Supplied for Installation at Comanche Peak.Design Corrected Through Engineering Change Order Adding Two Filter Capacitors ML20064G3441994-03-0707 March 1994 Part 21 Rept Re RTP Universal I/O Controller Interface Card Utilized in Universal I/O Controller Supplied for Installation at Comanche Peak.Design Corrected Through Engineering Change Order Adding Two Filter Capacitors ML20063K6791994-02-16016 February 1994 Part 21 Rept Re Failed Bolting on Pacific Air Products Co Gravity Dampers.Failed Bolts Replaced W/Higher Strength Bolts ML20058K3841993-12-0909 December 1993 Part 21 Rept Re Potential Defect in Component of Dsrv & Dsr Enterprise Standby DG Sys,Regarding Potential Problem W/ Subcover Assembled Atop Power Head ML20059A7181993-10-19019 October 1993 Part 21 Rept Re Defective Rocker Arms Supplied to TU & Clei. Rocker Arms Machined & Inspected to Incorrect Print & Discovered at Tu.Defective Rocker Arms Recalled from Nuclear Customers.No Corrective Action Required at Respective Utils ML20024H8341993-08-19019 August 1993 Part 21 Rept Re Potential Problem W/Installation of Bushing in gear-type,3 Gpm,Oil Pump Used in Refrigerant Compressors, Mfg by Dunham-Bush.CVI Will Call for Hold Point in Fabrication Process Where Bushing Installed ML20012G3261993-02-18018 February 1993 Part 21 Rept Re Borg-Warner Bolted Bonnet Swing Check Valve Failing to Close During Preoperational Testing.Caused by Internal Body Wall Protrusions Resulting from Intersecting Machine Bores.Design Mods Will Be Implemented ML20128M7821993-02-12012 February 1993 Part 21 Rept Re Failure of 4-inch,150 Bolted Bonnet Swing Check Valve 2CC-0697 to Fully Close During Preoperational Testing.Disc Design Mod Installed.New Disc Component Should Be Installed or Existing Disc Refurbished ML20127P6151993-01-22022 January 1993 Final Deficiency Rept CP-92-019 Re Steam Leak Discovered in Train a RHR Pump Casing Gasket & Seal on 920729.No Apparent Damage to Seal Noted.Item Not Reportable Per 10CFR50.55(e) or Part 21 ML20127L4661993-01-20020 January 1993 Suppl to Final Deficiency Rept CP-89-015,provided on 921130 Re Check Valves 2CC-0693 & 2CC-0697 Failure to Close on 921201.Valves Reworked & Retested Satisfactorily.Supplier Bw/Ip Advised of Test Failures,Cause & Corrective Actions ML20127H2301993-01-15015 January 1993 Part 21 Rept Re Potential Defeat in Component of Dsrv & Dsr Enterprise Standby DG Sys.Starting Air Distributor Housing Assemblies Installed as Replacement Parts at Listed Sites ML20127A1201993-01-0808 January 1993 Supplemental Deficiency Rept CP-92-004 Re Mfg Defects in Printed Circuit Boards for Elgar Class 1E Electric Power Inverters.Initially Reported on 920513.Baseline Data Established for Each Printed Circuit Board ML20127C2191993-01-0707 January 1993 Supplemental Deficiency Rept CP-92-010 & Final Deficiency Rept CP-92-020 Re Cracks in Containment Spray Pump Suction Vent Piping,Initially Reported on 920722 & 1204, Respectively.Unacceptable Configurations Modified ML20126J5961992-12-31031 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. 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Initially Reported on 920911.Addl Administrative Controls Will Be Implemented to Prevent Inadvertent Damage ML20125D3871992-12-0808 December 1992 Interim Deficiency Rept CP-92-019:on 920729,steam Leak Discovered in Train a RHR Pump Casing Gasket & Seal During Hot Functional Testing.Deviation Being Evaluated.Evaluation Will Be Complete by 930125 ML20125A9511992-12-0404 December 1992 Part 21 Rept,Providing Major Milestone Schedule & Portions of Part 21 Open Items List of Issues Currently in Review TXX-9253, Final Deficiency Rept CP-89-015 Re Backleakage Through AFW Check Valves Supplied by Bw/Ip Intl,Inc.Initially Reported on 890519 & Documented in Insp Rept 50-446/92-25. Check Valves Will Be Inspected Prior to Fuel Load1992-11-25025 November 1992 Final Deficiency Rept CP-89-015 Re Backleakage Through AFW Check Valves Supplied by Bw/Ip Intl,Inc.Initially Reported on 890519 & Documented in Insp Rept 50-446/92-25. 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TEXAS UTILITIES GENERATING COMPANY NKVWAY TOWER e 400 NORTH OLIVE NTREET. L.H. A1 a DAll.AN. TEX AN 7830%
w;wA G_Cou, s September 30, 1985 TXX-4571 l
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Mr. D.R. Hunter, Chief Reactor Project Branch 2 U.S. Nuclear Regulatory Commission Office of Inspection & Enforcement 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76012 Docket No.: 50-445 COMANCHE PEAK STEAM ELECTRIC STATION CONDUIT SUPPORT SYSTEM QA FILE: CP-85-34, SDAR-195 j FILE NO.: 10110
Dear Mr. Hunter:
l On September 6,1985 we verbally notified your Mr. C. Gould of a deficiency regarding the adequacy of conduit supports to perform their intended design function.
The deficiency is being pursued under the Comanche Peak Response Team Plan.
We are continuing our evaluation and anticipate completion by February 1, 1986.
Very truly yours,
, W.G. Counsil WGC:mlm cc: NRC Region IV - (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
! U.S. Nuclear Regulatory Commission Washington, DC 20555 I
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