TXX-4140, Interim Deficiency Rept Re Discrepancy W/Installation of Curtain Five Dampers W/O Proper Provisions for Thermal Expansion.Initially Reported on 840309.Completion of Evaluation Expected by 840615
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| ML20087P962 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 03/30/1984 |
| From: | Clements E TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| CP-84-08, CP-84-8, SDAR-132, TXX-4140, NUDOCS 8404100154 | |
| Download: ML20087P962 (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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TEXAS UTILITIES GENERATING COMPANY MKYWAY Tt3 WEN
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% APR - 51984 Mr. E. H. Johnson, Chief Reactor Project Branch 1 h y U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement 611 Ryan Plaza Drive, Suite 1000 Docket Nos. 50-445 Arlington, TX 76012 50-446 COMANCHE PEAK STEAM ELECTRIC STATION CURTAIN FIRE DAMPERS QA FILE: CP-84-08, SDAR-132 FILE NO.: 10110
Dear Mr. Johnson:
On March 9, 1984 we verbally informed your Mr. D. Hunnicutt of a discrepancy with the installation of curtain fire dampers without proper provisions for thermal expansion.
We are continuing our evaluation and anticipate completion by June 15, 1984.
Very truly yours, Af 8RC:tlg cc: NRC Region IV - (0 + 1 copy)
Director, Inspection and Enforcement - (15 copies)
U.S. Nuclear Regulatory Commission Washington, DC 20555 8404100154 840330 PDR ADOCK 05000445 s PDR IF-27
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