ML20002D286

Interim Deficiency Rept Re Unauthorized Field Mods to Hilti-Kwik Concrete Anchor Bolts,Initially Reported 801001. Bolts Have Not Been Modified in Unauthorized Manner. Follow-up Rept Will Be Submitted by 810417

ML20002D286
Person / Time
Site:	Comanche Peak
Issue date:	01/12/1981
From:	Gary R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	Seidle W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, TXX-3266, NUDOCS 8101200253
Download: ML20002D286 (2)

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9 TEXAS UTILITIES GENERATING COMinNY 2003 BRTAN TOWEH

• DAtJ.AS.TEXA8 75208

n. s. om January 12, 1981

".'Zl'.0 ' =*.'O' TXX-3266 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 HILTI-KWIK CONCRETE ANCHOR BOLTS FILE NO: 10110

Dear Mr. Seidle:

In accordance with 10 CFR 50.55(e) we are submitting this progress report concerning identified deficiencies as a result of unauthorized field modifications of Hilti-Kwik concrete anchor bolts during the installation process. We have previously reported this item to your Mr. R. G. Taylor on October 1, 1980, and hid submitted an interim report to you forwarded by TXX-3223 dated October 21, 1980.

The initial phase of the test program utilizing ultrasonic test methods was completed on December 31, 1980. This program was established to test and evaluate each functional craft discipline / subcontract which installed Hilti-Kwik anchor bolts. The craft disciplines / subcontracts evaluated were electrical, fire protection, HVAC, instrumentation and mechanical.

Based on the results of the initial phase of the test program, there is sufficient assurance that the mechanical, instrumentation and fire protection Hilti-Kwik installations have not been modified in an un-authorized manner. Therefore, no additional testing in these areas is anticipated at this time. Certain anomalies were detected with i

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Mr. W. C. Seidle TXX-3266 January 12, 1981 u

l electrical and HVAC Hilti-Kwix installations. We are continuing our

! testing and evaluation in these areas. We anticipate submitting a

follow-up report on the continued ir.v Jtigations by April 17, 1981.

If we can provide any additional information, please advise.

Very truly yours, R . Gary i RJG

dk l cc: NRC Region IV - (0 + 1 copy)

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

U. S. Nuclear Regulatory Commission

Washington, D. C. 20555 i

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