I see this has been discussed before but with no real answer. The background is: In accordance to B31.3 Table 323.3.1 A-4 requires that a specimen is prepared as "One required for each welding procedure, for each type of filler metal (i.e., AWS E-XXXX classification), and for each flux to be...
We need to weld a temporary cap (P1) to a (P4) pipe for a shop hydro-test of a spool piece. The only qualified weld procedure we have requires PWHT. Is there any exemption/code case/interpretation that allows us to perform the weld, perform the hydro, and cut out the weld. All without PWHT...
We have a B31.1 weld (pipe to nozzle) to a very short nozzle on a section VIII vessel which is going to require alot of heat to go into the shell to meet the PWHT requirements. B31.1 is very vague on PWHT and temperature gradients but section VIII UW-40 is very clear about harmful gradients...
We recently purchased a cabin in central Canada. The foundation (which is identical as all the neighboring cabins) is simply wood blocks on the ground. The soil is primarily sand. I want to raise the cabin to approx 3' from ground level and insulate the foundation walls. Drilling piles to below...
We have welded a stringer pass (3/32)down hand on a SA210C waterfilled boiler tube with 7018A1. Single stringer about 2.5" in length. The welding was to repair an area of undercut (membrane to tube). Question is what effect on the base material and possible future failure could this cause? Our...
I am refering to a ASME 1 SSH header. P5A material. I realize that the code does not require Radiography after PWHT but it has become a long standing practice to RT before PWHT (economics) and RT after PWHT(metalurgy). I was wondering if any one could give some insight into what the failure...
