0 votes
131 views

Difference between Individual Pressure Relief Load and Maximum Emergency Relief Load?

asked Jul 29, 2015 in Engineering by cuchiang (2,310 points)
Need description of the Difference between Individual Pressure Relief Load and Maximum Emergency Relief Load. Thanks.

1 Answer

+1 vote
answered Jul 30, 2015 by philyanko (1,060 points)

Individual Pressure Relief Load: The maximum pressure relief discharge rate from a particular piece of equipment for a single contingency used for sizing a pressure relief device and its inlet and outlet piping and to determine the cumulative load for a scenario for sizing flare header laterals and main headers and the flare knockout drum and flare tip.

Maximum Emergency Relief Load: The maximum relief discharge rate to the flare.  The maximum relief load is the larger of the largest individual relief load or the simultaneous opening of a number of pressure relief devices because of power failure or similar scenarios.  It is used for calculating sizes of the headers, flare stack, knockout drum, or seal and flare tip.

...