RT of Fillet Weld
RT of Fillet Weld
(OP)
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
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





RE: RT of Fillet Weld
RE: RT of Fillet Weld
RE: RT of Fillet Weld
Declan
RE: RT of Fillet Weld
If it is a socket style joint the one of the main purposes of RT on the joint is to check the gap dimension between the internal of the socket lip and the bottom of the branched pipe, most design and client specifcations require a 1.5mm minimum gap in order to allow for expansion and contraction during service.
Welding Engineer
MSc Weld Eng,IWE,CEng
Australia
RE: RT of Fillet Weld
With all due respect I have to query your comment on socket weld gaps being designed for expansion / contraction during service.
B31.3 requires a 1.5 mm BEFORE welding to allow for expansion / contraction during the welding operation.
I have had numerous arguements with engineers who require RT of socket welds after welding and then reject if there is zero gap. It may have been a perfectly code compliant weld but contracted 1.5 mm during cooling after welding.(it is still basically a code compliant weld)
Surely if there was an engineering reason for a 1.5 mm gap AFTER welding the B31.3 committee would have revised the code to reflect this,
Regards,
Kiwi
RE: RT of Fillet Weld
RE: RT of Fillet Weld