ML20086N042

Final Part 21 Rept Re Potential Problem Concerning Radiography of Branch Connection Welds Covered by Reinforcing Pads.Welds at Byron,Braidwood & North Anna Acceptable.Weld 7 at Clinton Reradiographed

ML20086N042
Person / Time
Site:	Byron, Braidwood, North Anna, Clinton, 05000000, Zimmer
Issue date:	01/02/1984
From:	Bornes R SOUTHWEST FABRICATING & WELDING CO. (SUBS. OF IU
To:	Potapovs U NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-PT21-84-116-000 PT21-84-116, PT21-84-116-000, NUDOCS 8402170196
Download: ML20086N042 (2)

Text

.

SOUTHWEST FABRICATING & WELDING CO., INC.

January 2, 1984 3 H @ [M ]\Y1 M 9 Jul-5 BN j J Director, Office of Inspection & Enforcment U. S. Nuclear Regulatory Camussion Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Attention: Mr. Uldis Potapovs, Chief Vendor Inspection Branch

Reference:

10 CFR Part 21 -- Reporting of Defects & Noncm:pliance Illinois Power Ca,pany Clinton Station, Unit #1 SF&WC0 Intters dated 6/24/83, 8/17/83 & 10/4/83 Stpject: Final Report - Potential Noncmpliance Presented in Referenced Documents Gentlenen: '

'Ihe referenced letters established a potential problem concerning radiography of branch connection welds that were subsequently covered by reinforcing pads. During a review of radiographs at the Clinton, Illinois jcbsite, film representing Weld #7 on Piece Mark 1-DG-2-5 were found to contain images that had been identified as surface conditions at the tinn radiography was performed. It was determined, upon subsequent review of these film, that acceptability could not be proven since surface imperfections were no longer access-ible for visual inspection. The condition of this weld created our initial concern, which resulted in the suhnittal of a potential Part 21.

As previously reported, a review of our records shom1 that welds of the same configuration had been furnished to Camionwealth Edison's Byron and Braidwood sites and Virginia Electric's North Anna Units 1 and 2, as well as those at the Clinton jcbsite. Additionally, it was determmxi that we could not do a conplete review of the contract with Cincinnati Gas and Electric Canpany for the Zimner Project, since four drawings were missing fran our files.

8402170196 840102 /

b PDR ADOCK 05000338 /

s PDR

)0 7525 Sherman Street P.O. Box 9449 Hcuston. Texas 77261-9449 (713) 928-3451 TWX: 910 881-1600

e SOUTHWEST FABRICATING

- a WELDING CO, INC. -

Nuclear Regulatory Comm.

January 2,1984 Page 'IVO Each of the jobsites affected was appropriately notified and the investigations are nm cmplete with results as follms:

A. Illinois Power Cmpany, Clinton, Illinois Weld #7 on Piece Mark 1-DG-2-5 is to be reradiographed to assure code caplian . No other welds were found to be uninterpretable due to surface irregularities.

B. Cmnonwealth Edison Co. , Byron 1 & 2, and Br'aic%ood 1 & 2 Radiograpns of all branch connection welds were found to be acceptable.

C. Vircinia Electric & Power Co., North Anna Units 1 & 2 Radiographs of all branch connection welds were found to be acceptable.

D. Cincinnati Cas & Electric Co. , Zinmer Station A review by Cincinnati Gas & Electric personnel, of drawings not in Southwest's files, proved that welds having this configuration had not been supplied by SF&WCO.

Based on the above information, Southwest considers this incident to be closed. If you require additional information, please contact the writer.

Yours very truly, ygY R. P. Bornes Quality Assurance Manager RPB:dc cc: Illinois Power Cmpany Camonwealth Edison Cmpany Attn: R. E. Campbell Attn: Mr. J. T. Westermeier 500 South 27th Street P. O. Box 767 Decatur, IL 62521 01icago, IL 60690 Virginia Electric & Power Co. Cincinnati Gas & Electric Co.

Attn: Mr. G. A. Helm W. H. Zinmer Nuclear Power Plant P. O. Box 26666 U. S. Highway 52 Richmond, VA 23261 Moscow, OH 45153 Attn: Mr. John Wald