tie-in welds testing requirements
tie-in welds testing requirements
(OP)
Hi,
In a tie-in weld that will join pretested piping sections or untestable sections, is the tie in weld required to be pressure tested? can it just be NDE'ed? codees in questoin are ASME B31.3, 31.4, and 31.8.
Thanks for your help
In a tie-in weld that will join pretested piping sections or untestable sections, is the tie in weld required to be pressure tested? can it just be NDE'ed? codees in questoin are ASME B31.3, 31.4, and 31.8.
Thanks for your help
As much as possible, do it right the first time...





RE: tie-in welds testing requirements
RE: tie-in welds testing requirements
"It is not required that tie-in welds be tested, but the joint must undergo radiographic (X-ray) or other acceptable NDE and meet the acceptance criteria or API 1104. The joint must be coated before backfilling if it is in a buried section"
BUT
in ASME B31.3, it states something similar but calls it "closure weld", I understood the the closure weld to be the B31.3 term for tie-in weld for closing in or tieing in previously tested sections, does that sound right?
Thank you.
As much as possible, do it right the first time...
RE: tie-in welds testing requirements