Per UCS-79(d) we would need to perform heat treatment on heads when the extreme fiber elongation is greater than 5% unless none of UCS-79(d)(1-5) apply. My problem comes with a 1/2” thick (pre forming) head. The manufacturer of the heads would only guarantee and provide papers showing that the...
I'm having a bit of a debate within my group about whether or not ANY welding is permitted after PWHT without having to heat treat a second time. The situation is this:
We have a vessel with 1 1/4" thk shell sections. The rear head had a straight flange thickness of 1 3/8". The head was...
I'm designing a vessel in Compress that will be mounted on a trailer and pulled behind a truck. Therefore, I'm trying to minimize weight and material where possible to keep the trailer loading down.
The vessel itself is very light, <5000lbs, so the saddles it will be mounted on don't require a...
