4 replies to this topic

[Steve90]

Hi guys !

 

I want to know if there is any standard where i can find how to size inlet and outlet pipe diameters of the PSV after the designing of the latter ?

Based on the API 520 I found that a criteria of 3% of pressure drop of the set pressure should be verified.

 

should we use the API 14E for velocity check for each case(liq,gas,gas/liq) ?

Hysys perform the line sizing of PSV based on inlet and outlet steam sonic velocity ? Is this an important criteria ?

 

 Thx

[fallah]

Steve90,

 

Try using API 521 for your query...

[breizh]

Steve90,

Consider the documents attached , you will learn a lot .

 

Good luck.

 

Breizh

Edited by breizh, 21 December 2015 - 07:17 PM.

[Steve90]

Thank you for your quick reply and for valuable document given by Mr Breizh. I want to know if there is a standard or a link where i can find a rigorous psv pressure drop calculation step by step equations . thk you very much

[breizh]

Hi ,

Consider the resource attached and let you try to get a copy of this book , by far the best for clarity on the topic .

 

Good luck,

Breizh