Re: PSV INLET & OUTLET LINE SIZING CRITERIA

From: <elie>
Date: Mon Feb 12 2007 - 20:46:00 EST

It is all spelled out for you in API 520. I believe the crieteria for inlet/outlet piping is:

1. max inlet pressure drop is 3% pf psv set pressure (gauge)
2. Max outlet pressur drop is 10% for conventional PSV, 30% for Blellows, and 50% for pilot operated of PSV set pressure.

   Also download and read the following article:    <a href="http://www.fauske.com/Download/Chemical/ProcessSafety/FAInews_Vol9_No1.pdf">http://www.fauske.com/Download/Chemical/ProcessSafety/FAInews_Vol9_No1.pdf</a>

   Regards,

sen_petro <sen_petro@yahoo.co.in> wrote:

           HELLO SIRS, iAM WORKING AS A PROCESS ENGINEER IN KAVIN ENGINEERING , INDIA I HAVE SOME DOUBTS IN SIZING INLET AND OUT LET LINES FOR A PSV ROUTED TO HP FLARE . EVEN THOUGH I CONSIDER PRESSURE DROP , VELOCITY(MACH) . IS THER ANY OTHER CRITERIA TO FOLLOW . PLS HELP ME IN THIS IAM WORKING FOR FPSO DESIGN REGARDS
SENTIL KUMAR M
PROCESS ENGINEER
KAVIN ENGINEERING
TAMIL NADU
INDIA
+919942747779

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[Non-text portions of this message have been removed] Received on Mon Feb 12 20:46:00 2007