ML20086N188

Part 21 Rept Re Fabrication of Piping Subassemblies W/Wall Thickness Less than Required Design Specs.No Addl Deviations Found.Incident Considered Closed

ML20086N188
Person / Time
Site:	Harris
Issue date:	10/25/1983
From:	Bornes R, Goodwin B SOUTHWEST FABRICATING & WELDING CO. (SUBS. OF IU
To:	Potapovs U NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-PT21-84-114-000 PT21-84-114, PT21-84-114-000, NUDOCS 8402170279
Download: ML20086N188 (2)

Text

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SOUTHWEST FABRICATING

& WELDING CO., INC.

October 25, 1983

& hY _-.

OCT211983 L

Director, Office of Inspection & Enforceent

(

h, U. S. Nuclear Regulatory Ccamission Region IV j\\

l 611 Ryan Plaza Drive, Suite 1000

.i.,w p -

J Arlingtm, Texas 76011

_"~

Attention: Mr. Uldis Potapovs, Q1ief Vendor Inspection Branch

Reference:

SF&WCO Letter dated 10-17-83 10 CFR Part 21 - Reporting of Defects & Nonculpliance C;xolina Light & Power Canpany Shearon Harris Station - Unit #1 Cmstructor: Daniels Construction Co.

Engineer: Ebasco Services

Subject:

Fabrication of Piping Subassenblies having Wall Thickness less than Rcquircd by Design Specifications Gentlemen:

The referenced Southwest letter reported two piping subassanblies fabricated frcm 3" Schedule 40 material, in lieu of 3" Schedule 160, as required by design specifications.

Southwest's engineering department has conducted a complete investi-gation of nuclear iscretric drawings for this contract and found ne other deviations. We investigation was conducted as follows:

1.

The iscmetric assignment log was used to idmtify nuclear isanetrics.

2.

Individual nuclear iscmetrics were reviewed to isolate those drawings that cmtained specification breaks and/or piping schedule change.

3.

ne isometric assignment log has been trarked to identify all nuclear iscmetrics and assure ccmplete coverage.

0 7525 Sherman Street P.O. Box 9449 Houston, Texas 77261-9449. (713) 928-3451 TWX: 910 881-1600 8402170279 831025 PDR ADOCK 05000400 0

PDR

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9 n p SOUTHWEST FABRICATING

- t WELDWG CO, DC. -

Nuclear Regulatory Ccrimission October 25, 1983 Page 'IWo 4.

Each iscanetric that contrined a piping schedule change was set aside for redew and listed for reference and control.

5.

Shop detail drawings vure ccupared to the respective iso-metrics that containec' a piping schedule change.

6.

No deviatims were found other than those previously identi-fied on Isometric No.1-CS-265, and Southwest's Shop Drawings Q3302-AK Sheets 21 and 22.

Since this error was isolated to work performed by specific personnel involved in this contract only, and based upon the fact that no addi-tional deviations were disclosed by our investigation, southwest Fabricating & Welding Co. considers this incident to be closed.

You may ccntact the writer if additional information is rquired.

Yours very truly, h

WY

~

M Robert P. Bornes B. JfGoodwin,' President anci Quality Assurance Manager Chier Executive Officer RPB:dc cc: Carolina Pcuer & Light Ccmpany Attn:

Mr. N. J. 01iangi Post Office Box 101 New Hill, NC 27562

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