Circumferential weld sust & exp stress W in B31.3- to take or not ?
What is the meaning of the designer is responsible?
If we take W=1 for P91 piping cirmferental spool joining welds for 540C design temp without the use of special electrodes to ensure W=1, are we right!
Is any reqt of use of W optional we take it or not - ASME will allow ?
In India, IBR (A Govt of India organisation) has jurisdiction on such piping. If we know ASME is flexible on this issue, why to spend on costly electrodes !
Please explain the codal paradox of "the designer is responsible"
reg,
sam
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