Hello. I am in the middle of writing a procedure/policy for welding on live equipment in a chemical manufacturing facility. From past experience, we used a software (E2G SagePlus) to help with heat transfer during welding to determine the heat input and related welding variables in order to...
Hello, I'm being asked to specify a thickness of pyrogel insulation on a vessel for heat conservation. Any ideas on how to go about doing this? The operating temp of the vessel is 250F.
@r6155, can you tell me where you got that information? ASME Section VIII Appendix R states that for P1 materials less than 1" join thickness that only a preheat of 50F is required. What is telling you to PWHT? This is for a 1/2" full pen weld.
Hello, I'm being asked if preheat is required to weld 5/8" thick CS beveled lifting lugs to the top of a 6" thick SA350-LF2 CS blind flange. My thoughts are no because it's just a bevel, full-pen weld on a 5/8" thick CS plate.
Can anyone give input on this? TIA!
Hello all,
We have a handful of exchangers that we're pulling during our next TA to blast and clean the tubes. We want to do a tightness/leak test after we've cleaned them and put the bundles back. My question is what pressure should we bring the shell and tube sides up to? I was thinking 1.1x...
