RT of Fillet Welds

[Meck91]

Folks,

Would appreciate your help:

Is this possible to do a RT of small bore fillet weld.
Previously I was of the impression that it is impossible to perform RT of fillet weld, however, after reading some literature I found that in most of the cases RT of fillet weld will not give you a proper indication of weld defects. Is this correct?

Secondly, If my closure weld is fillet weld, and to satisfy some jurisdiction requirements, I have to perform 100% RT in lieu of hydrotest. So how I should deal with this situation, should I go with UT for RT of fillet or any other advise would you like to give.

Thanks in advance.

Meck91

 

[metengr]

I see no reason to RT a fillet weld. Since fillet welds are not full penetration welds you should not need a volumetric examination. For fillet welds, I would perform a surface NDT as a minimum - this is permitted by the NBIC (National Board Inspection Code).

 

[unclesyd]

Is this socket weld

If so this might make a slight difference is required NDT inspection.