+1 vote

Settle out pressure calculation

asked May 6, 2014 in Process by anonymous
Can some body share procedure for gas compresor settle out pressure calculation?

1 Answer

+1 vote
answered May 11, 2014 by cobiesmith (3,310 points) | selected May 17, 2016 by odadmin
Best answer
When a compressor system is tripped during the maximum pressure drop across it, a differential pressure drop develops. This differential pressure equalizes out, if there is no venting taking place anywhere from the system, and arrives at a settle-out pressure. As per API 521, the minimum design pressure of the separator drum/ scrubber should be calculated as 1.05 times the settle-out pressure. This will provide an adequate differential between the operating pressure and set pressure of the pressure relief device for a compressor shutdown contingency.

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