Safety relief valves on jacket pressure vessels

[iloveboilers]

On jacketed pressure vessels, should a safety relief valve be placed on the shell, the jacket, or both? I assumed that since the shell design pressure is lower for this application, that a safety relief valve will be needed on the shell. I have included the pressure vessel info below. Thank you.

Shell design pressure = 30psi
Jacket design pressure = 45psi

 

[Compositepro]

The shell and jacket are separate pressure vessels and each one requires its own relief valve.

 

[shvet]

On jacketed pressure vessels, should a safety relief valve be placed on the shell, the jacket, or both?

Not an easy question. In general answer is - both. In practice - depends on jacket design, code, overpressure source/scenario and protection method applied.
Describe your case in details.