TXX-4335, Interim Deficiency Rept SDAR-154 Re Safe Shutdown Analysis Evaluations Not Considering Potential Fire in Hvac.Initially Reported on 840913.Evaluation Continuing.Next Rept Expected by 841106
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| ML20106E024 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/12/1984 |
| From: | Clements B TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Hunter D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| SDAR-154, TXX-4335, NUDOCS 8410260267 | |
| Download: ML20106E024 (1) | |
Similar Documents at Comanche Peak | |
|---|---|
Category:DEFICIENCY REPORTS (PER 10CFR50.55E & PART 21)
MONTHYEARML18016A9011999-04-12012 April 1999
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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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Westinghouse Owners Group Program Modified to Eliminate Use of leak-before-break Methodology ML20106C0201992-09-28028 September 1992 Interim Deficiency Rept CP-92-018 Re 920728 Discovery of Steam Leak in 3-inch Schedule 80 Lateral Installed in Steam Blowdown Sys.Evaluation of Deviation Will Be Completed by 921112 ML20105C7951992-09-17017 September 1992 Final Deficiency Rept CP-92-015 Re GE Circuit Breaker Mounting Hardware Incorrectly Supplied & Installed.Initially Reported on 920623.Mounting Screws Will Be Replaced by 921018 ML20105B7211992-09-11011 September 1992 Final Deficiency & Part 21 Rept CP-92-13 Re Defect in Train a DG Lube Oil Pressure Regulating Valve Supplied by Delaval Engine & Compressor Div of Cooper Energy Svcs.Initially Reported on 920812.Deviation Not Reportable ML20105B7231992-09-11011 September 1992 Final Deficiency Rept CP-92-14 Re Defect in Train B EDG Gearcase Lube Oil Supply Line Flange,Supplied by Delaval Compressor Div of Cooper Energy Svcs.Initially Reported on 920812.Shaft,impeller & Bushings Replaced ML20127D1491992-09-0404 September 1992 Part 21 Rept Re Defect in Component of DSRV-16-4 Enterprise Standby DG Sys Jacket Water Pump Shaft.Caused by Incorrect Tapers Machined on Shaft Due to Vendor Mismatching.All Affected Shafts Recalled & Quality Insp Plans Changed ML20114B8291992-08-28028 August 1992 Interim Deficiency Rept CP-86-41 Re Evaluation of Effect of Small Break LOCA During Mode 4 Operation.Initially Reported on 860528.Review of WCAP-12476 Not Yet Completed.Update, Providing Conclusion of Review,Will Be Submitted by 921030 TXX-9237, Interim Deficiency Rept CP-92-08 Re Large Piece of Casting Broken from Seating Area of Lube Oil Pump Suction Check Valve.Initially Reported on 920722.Final Rept Will Be Submitted by 9210301992-08-21021 August 1992 Interim Deficiency Rept CP-92-08 Re Large Piece of Casting Broken from Seating Area of Lube Oil Pump Suction Check Valve.Initially Reported on 920722.Final Rept Will Be Submitted by 921030 ML20114B0961992-08-21021 August 1992 Interim Deficiency Rept CP-92-10 Re Defect in Two Welds on 3/4-inch Containment Spray Pump Suction Vent Piping. 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Text
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fg TEXAS UTILITIES GENERATING ' COMPANY MKYWAY TOWEN
- 600 NONTH OLIVE NTHEET, L.H. M1
- DALLAM, TEXAM 73201
'f c .Ed!"d!%"1 -S October 12, 1984 TXX-4335 Mr. D.R. Hunter, Chief Reactor Pro,iect Branch 2 U.S. Nuclear Regulatory Commission Office of Inspection & Enforcement 611 Ryan Plaza Drive, Suite 1000 Docket No.: 50-445
, Arlington, TX 76012- 50-446 COMANCHE PEAK STEAM ELECTRIC STATION CONTROL ROOM HVAC i- QA FILE: CP-84-29, SDAR-154 FILE NO.: 10110 7: ..
Dear Mr. Hunter:
On September 13, 1984 we verbally notified your Mr. D. Hunnicutt of a deficiency
. .regarding the safe shutdown analysis' evaluations which did not consider a potential fire which could affect habitability of control room and alternate shutdown capability.
We are continuing'our evaluation and anticipate completion by Novembe- 6.
1984.
M @ [iQ [}M( Very truly yours, li- ~ -
OCTl-51984
> BRC:tig .
cc: NRC Region IV - (0 + 1 copy)
Director, Inspection & Enforcement (15 copies)
U.S. Nuclear Regulatory Commission Washington, DC 20555 f
8410260267 841012 PDR ADOCK 05000445 s PDR 4
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