TXX-6050, Interim Deficiency Rept CP-85-50 Re Improper Welding Processes Used in Mfg of Cable Tray Tee Fittings.Initially Reported on 851206.Testing Program Implemented.Vendor Identifying Min Weld Requirements.Next Rept by 861219

Interim Deficiency Rept CP-85-50 Re Improper Welding Processes Used in Mfg of Cable Tray Tee Fittings.Initially Reported on 851206.Testing Program Implemented.Vendor Identifying Min Weld Requirements.Next Rept by 861219

ML20215L009
Person / Time
Site:	Comanche Peak
Issue date:	10/21/1986
From:	Counsil W, Keeley G TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	Johnson E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
CP-85-50, TXX-6050, NUDOCS 8610280425
Download: ML20215L009 (2)

Text

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DALLAS-SLIC TEL No. 214 979 8700 Oct 21.86 17:23 P.04 i

Log # TXX-6050 File # 10110 g 908.3 TEXAS UTILITIES GENERATING COMPANY SKYW AY tow 3R . 400 MORTTE OEJVB FrmEST. L.m. 88 . DALLAS. TMN AS 70001 October 21, 1986 MM^LL'af..'A

%@ MiTIM Mr. Eric H. Johnson, Director >

OCT 211986 i i

Division of Reactor Safety and Projects l 'y U. S. Nuclear Regulatory Commission -

611 Ryan Pla::a Drive, Suite 1000 Arlington, TX 76012

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NOS. 50-445 AND 50-446 CABLE TRAY TEE FITTINGS SDAR: CP-85-50 (INTERIM REPORT)

Dear Mr. Johnson:

On December 6,1985, we verbally notified your Mr. H. S. Phillips of a deficiency involving the use of improper welding processes in the manufacturing of cable tray tee fittings which could affect the equipment qualification. This is an interim report of a potentially reportable item under the provisions of 10CFR50.55(e). Our latest report, logged TXX-4885, was submitted on June 27, 1986.

Our review has determined that the deficiency is the result of inadequate information provided in the vendor drawings for weld symbols, spacing of intermittent welds, held length and location, and members to be joined. The inadequate information was primarily due to the use of notes instead of detailed weld symbols to provide necessary welding information for the installer and/or fabricator.

In order to complete our assessment of this issue, a testing program will be conducted. To determine the weld conditions of the components to be tested, we have initiated the following program:

0 The vendor has been requested to identify the minimum weld requirements for each tray / fitting configuration, including the

" Tee" fitting.

O A field survey is being undertaken to determine " worst" weld conditions for various fittings and straight sections. .

From the results of the above program, " Tee" sections with " worst" case weld conditions will be selected for testing. Completion of the test program is anticipated in November, 1986. Evaluation of the test results and formolation of corrective actions will be performed at that time.

Corrective measures to preclude recurrence of these conditions have been established by the development of revised vendor drawings which provide specific fabrication requirements.

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DALLAS-SLIC TEL No. '214 979 8700 Oct 21.86 17:24 P.05 TXX-6050

. October 21, 1986

! Page 2 of 2 Based upon this schedule, we anticipate submitting our next report by December 19, 1986.

Very truly yours, M

W. G. Counsil By:

G.S. Keeley x/

Manager, Nuclear M censing JCH/amb c - NRC Region IV (0 + 1 copy)

Director, Inspection & Enforcement (15 copies)

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

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