PSV sizing or selection": pneumatic test

[petroabbes1980]

Dear All;
anyone know how to select or size a PSV to be installed in a vessel subject to a pneumatic test.
I have no idea if it will be according to API 521 or other standards?

Many thanks for your support.

 

[zdas04]

This question doesn't make much sense. A PSV is set at MAWP or lower. A strength test is done at some number greater than MAWP so you have to remove the normal operating PSV during the test. The normal operating PSV will be designed per applicable codes and API 521 is the code used in the Oil & Gas business. That device will be designed for the normal operating fluids.

During the test, any PSV installed will be designed for some multiple of test pressure and the test fluid. A completely different answer.

[bold]David Simpson, PE[/bold]
MuleShoe Engineering

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. Galileo Galilei, Italian Physicist

 

[mk3223]

IMO, the pneumatic testing flow as well as the hydro testing flow is small and in a controlled manner. As a result, the PSV should be based on the testing flow.