Hi! I´ve just discovered this forum crowed fo experts and maybe someone here could please clarify me two doubts I have.
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.
Hope someone here can answer my doubts.
Thanks a lot in advance!!
José Luis