Part 21 Report - 1996-282

 
 
ACCESSION #:  9607170170

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                    Swagelok [Registered Trademark]

CRAWFORD FITTING COMPANY
SOLON, OHIO 44139

FRED A. LENNON                                   PHONE (216) 248-4600
    CHAIRMAN             July 3, 1996              FAX (216) 349-5970

Document Control Desk
Office of Reactor Regulation
Nuclear Regulatory Commission
Washington, D.C.  20555

Subject: Defects Potentially Reportable under 10CFR21

Gentlemen:

We are writing to inform you about a possible defect in certain stainless
steel Swagelok tube fittings made from forgings.

A list of the part numbers and the U.S. nuclear facilities to which these
parts have been sold is enclosed.  All of these facilities have already
been notified by us about this possible problem.  The potential defect is
limited to the heat code "GAY" and only the body of the fitting is
involved.

The potential defect is a "piping" defect that existed in the bar as it
was received from the mill.  "Piping" is a small portion of unmelted
material that is drawn lengthwise into the bar during the drawing
process.  The flaw will cause the forging to crack immediately upon pull-
up, so if the fitting has been installed and tested without incident, the
defect is not present.  The rate of incidence among all the parts
inspected from the heat is around 0.01%.

We enclose certified material test reports from the supplier of the
material, Carpenter Technology Corporation, for each of the sizes made
from this heat.  We have already instituted an additional inspection
procedure for raw material to prevent these type of defects from being
accepted by us.

                        CRAWFORD FITTING COMPANY

Page 2
Nuclear Regulatory Commission
July 3, 1996

Sales drawings for each of the referenced part numbers are included with
this letter.

If there are any questions, please do not hesitate to contact us.

                              Sincerely,

                              David J. Johnston
                              Vice President & General Manager
rdk
Encl.
cc: WRC
    EPM
    EDS

Rochester Gas & Electric                     SS-400-2-4ST
Ginna Station                                (2 pcs.)
P. O. #NQ-15006-A-JW
I. D. R16BU0524B

Duke Power Company                           SS-600-3TFT
Oconee Nuclear Station                       (8 pcs.)
P. O.  #ON1085
I. D.  R14FX0512B

IES Utilities Inc.                           SS-600-3TFT
Duane Arnold Energy Center                   (10 pcs.)
P.O.  #S91738
I.D.  R14CQ0016B

TUBE FITTINGS

Table  "Positionable Male Elbow (SAE/MS straight thread)" omitted.

Table  "Positionable Male Elbow (ISO parallel thread)" omitted.

TUBE FITTINGS

Table  "Female Run Tee (tapered thread)" omitted.

Table  "Female Branch Tee (tapered thread)" omitted.

Section "CERTIFICATE OF TESTS - TYPE 316 HOT FINISH UNANNEALED FORGE
QUAL
NUCLEAR QUAL - CRAWFORD SWAGELOK M-2," 3 Pages omitted.

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