Qualification is required (see applicable design code).
e.g. ASME VIII/1, UW-31 CUTTING, FITTING, AND ALIGNMENT
….
(c) …..Tack welds, whether removed or left in place, shall be made using a fillet weld or butt
weld procedure qualified in accordance with Section IX. …
Regards
Manpreet Singh
On Wed, 15 Feb 2012 09:04:56 +0530 wrote
>Can we do tack weld by pipe fitters according to ASME 31.3?
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