The issue is typically with standing water. Low chloride content and corrosion inhibitor help but are not the solution.
Once the test is finished, immediately drain that water and purge/sweep the pipe with Nitrogen.
Get as much of the free-standing water out as possible and get it dry with...
It sounds like your client does not know what they're doing, so you need to tell them what to do.
1. Tell them not to cover the sealing surfaces (raised face) or the gasket with duct tape.
2. Ask them what the hell they're torqueing the flange to. The flange face should not be getting...
Unfortunately I cannot find a datasheet in our records, which is unusual. The compressor vendor had a blurb in their notes saying the PSV was supplied by the lube oil pump vendor. I did track down some stuff specifying the valve make/model but no relief calcs or anything like that.
However...
Hi, first time poster.
I know there is a lot of discussion of PSV vs. PRV, which is not what I want to discuss.
I have the following situation at the plant I work at:
The client is re-certifying their PSVs. We have come across several PSVs (labeled as PCVs on the vendor P&ID) on the...
