ML19323B776

Interim Deficiency Rept Supplementing 800114 & 23 Repts Re Violation of Piping Min Wall Thickness.Twenty safety- Related Sys W/Welds Evaluated by Physical or Ultrasonic Methods.Five Sys Were within Tech Specs

ML19323B776
Person / Time
Site:	Comanche Peak
Issue date:	04/15/1980
From:	Gary R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
References
TXX-3123, NUDOCS 8005140234
Download: ML19323B776 (1)

Text

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• PDR LPDR 8005140%39 TIC c -

NSIC TEXAS UTILITIES GENERATING COMPANY CENTRAL FILES 2001 BRYAN TOWER DALLAS. TEXAS 76201 R. J. GARY April 15, 1980

"."n;'Jf' ='.t';' TXX-3123 Mr. W. C. Seidle, Chief Reactor Construction & Engineering Support Branch U. S. Nuclear Regulatory Commission Office of Inspection & Enforcement 611 Ryan Plaza Dr., Suite 1000 Docket Nos. 50-445 Arlington, Texas 76012 50-446 COMANCHE PEAK STEAM ELECTRIC STATION l 1981-83 2300 MW INSTALLATION l PIPING MINIMUM WALL l FILE N0: 10110 1

Dear Mr. Seidle:

This progress report supplements our letters TXX-3088 and TXX-3092, dated January 14 and 23, 1980, respectively, relative to a violation of piping minimum wall thicknesses previously reported to your office in accordance with 10 CFR 50.55(e).

A total of twenty (20) safety-related systems had welds evaluated based  !

on either physical or ultrasonic testing measurements. Of the systems i evaluated, five (5) systems had measured wall thicknesses equal to or l greater than the specified minimum wall requirement. Those systems are the:

Service Air Instrument Air Steam Generator Blowdown and Cleanup Vents and Drains Liquid Waste Processing The review of weld and base metal repair records is. continuing and a sub-sequent progress report will be submitted to your office by June 20, 1980.

Very truly yours, RJG:df R. . Gary cc: NRC Region IV (0 + 1 copy)

Director, Inspection & Enforcement (15 copies) c/o Distribution Services Branch, DDC, ADM.

U. S. Nuclear Regulatory Commission Washington, D. C. 20555 i