PWHT of tube to tubesheet joints
PWHT of tube to tubesheet joints
(OP)
How can PWHT be conducted on a tube to tubesheet weld? Both new construction and also repair welds. Material is P No.4. Tube sheet thicness 90mm, tube size 8000mm lg. x 20mm od x 2mm thk. I am worried about distortion to the bundle, if the whole bundle is heat treated. For repair, How can we heat only a part without affecting others? Thans for your feedback, especially from those who have actual experience in these.
Regards
Andy Victor
Regards
Andy Victor





RE: PWHT of tube to tubesheet joints
I have seen entire tube bundles (u-bend) welded into tube sheets and then stress relieved.
Yes they distort some, but as long as they fit into the shell no one minded.
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P.E. Metallurgy, Plymouth Tube
RE: PWHT of tube to tubesheet joints