Ndt testing for a nh3 refrigeration plant

[nanuuk]

What area on the piping or vessels would you think problems would be more likely occur?

[RANGER1]

nanuuk,
Areas that can be most affected cold be plpe connections on vessels that sweat, or ice comes & goes.
If alway an ice layer then usually protected.
ie relief valve,oil drain, liquid makeup stubs etc
Also vessel support legs could be inspected as well if suspect.

Its not very often that insulated vessel corrodes from what I have seen.