United States Nuclear Regulatory Commission - Protecting People and the Environment


ACCESSION #:  9704010432



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DRAGON VALVES, INC.      13457 EXCELSIOR DRIVE o P.O. BOX 489 - NORWALK,

                         CALIFORNIA 90651

                                 (310) 921-6605 o FAX: (310) 921-0200



March 26, 1997



Document Control

U.S.  Nuclear Regulatory commission

Washington, DC 20555



Subject:       10CFR21 Evaluation of Quality Assurance Deviation



Reference:     Contract Numbers 88KNR-75062A & 92NNA-75604B

               Watts Bar Nuclear Plant

               Dragon Part Number 8N0516SED2

               TVA Mark Number: 47W600-99



Gentlemen:



It has been discovered that the tubing used on the above contracts was

not properly certified by the Material Manufacturer.  The tubing was

purchased and shipped from an approved vendor (Tube Sales).  But, we

failed to notice that the CMTR did not contain a statement that the

tubing, manufactured by Sandvick Steel Co., was produced under their QSC

program.  Sandvick is a Quality System Certificate holder, but this

material was not certified under their QSC program.



The tubing in question is 1" O.D. X 0.065 inch wall thickness, ASME SA213

TYPE 316.  Tube stubs from this material were welded into our valve

bodies.  A Liquid Dye Penetrant examination was performed on the weld

area, and a hydrostatic shell test and seat test was performed after

assembly.



The number of valves and their serial numbers are shown on the enclosed

Code Data Reports.



Since the tubing is certified to ASME SA213 TY 316 and the tests

mentioned above were performed, Dragon Valves.  Inc.  does not consider

this matter to be a substantial safety hazard.



The Owners (TVA) have been notified of the defect, concurrent to your

notification.



Sincerely,



DRAGON VALVES, INC.



Robert Bond

President



REB:bb



Enclosures (5): Certified Material Test Report & Code Data Reports



             MANUFACTURER OF VALVES FOR INDUSTRY SINCE 1945



Form  "MATERIAL CERTIFICATE" omitted.



Form   "FORM NPV-1 CERTIFICATE HOLDERS' DATA REPORT FOR NUCLEAR PUMPS

OR

VALVES - As required by the Provisions of the SME Code, Section III,

Div.," 8 Pages omitted.



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