Hi! I´ve just discovered this forum crowed fo experts and maybe someone here could please clarify me two doubts I have.
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DOUBT #1.- To certificate most of welders I use to prepare two differenent specimens: sheet 2F and tube 5G. With these specimens I thought that all my positions were covered, but recently I realised about somethingh that seems not to be OK in my selection. I´ll try to summarize clearly:
Table 4.3 in AWS D17.1:2001, or table 5.3 in AWS D17.1:2010, includes a note explaining that
sheet welds do not qualify tube welds if OD is lower than 1 in. The point is that this note, (2) in AWS D17.1:2001 and (c) in AWS D17.1:2010, is only included in the Tube Groove column, not in the Tube Fillet column, so I always thought that this note was not applicable for Tube Fillet certification and all of my tube fillet certified positions had the typical range (above OD welded, which is 1/2"). My doubts appeared when read the statemet of AWS D17.1:2001, 4.3.3.1.(3), or AWS D17.1:2010 5.3.3.1.(3)
"Qualification for tube welding on tubes of 1 in. OD or less requires qualification of a tube weld. The tube weld qualification is for any tube size equal to or larger than the OD of the tube weld"....
So, I have two possibilities, if 4.3.3.1 is mandatory over the table I have a problem, but if the table rules I´m OK. What do you think???
DOUBT #2.- Qualification reports received after testing sheet fillet welds (1mm thickness), always state
penetration partial. I would like to know the consequences for the welder certification scope. Does this mean that this welder cannot weld parts (fillet) requiring complete root fusion? If so I would have a problem with some customer parts which require complete fusion in the root (fillet) if angle is bigger than 105º if aluminum, or bigger than 90º for stainless steel.
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Hope someone here can answer my doubts.
Thanks a lot in advance!!
José Luis