Dear friends
in my project client wanted to use one of their existing vessel as test separator from their other project to this project, and they wanted from us to review
this vessel is three phase separator and has been made with operating pressure of 55and design pressure of 75 bar.
they wanted to use in the system with operating pressure of 30barg and design pressure of 40 bar,
i have two concern about :
1- about psv
2- control valves
does it need to change the psv and using the psv with 40 barg, or existing psv with 75barg is enough and can cover the all scenarios such as fire, if existing psv is enough ,is it applicable to use this psv(for any scenario)
for control valves:
I think the control valves shall be changed
because the operating pressure has been changed
thanks
rosshi