Dear all,
Currently I am involving in the compressor station with parallel configuration. I am attaching the sketch with this. We are depressurizing the station in the staggered way. The anti-surge header is connected to the suction manifold. While depressurizing the compressor suction manifold, considering anti-surge valve is Fail open and all volume in the compressor loop will be depressurized through suction manifold and this increasing the flaring capacity. Please provide some suggestion to avoid the increasing in flaring capacity.
Please advise is right to provide ESDV in downstream of anti-surge valve with a time lag. Once compressor gets tripped with certain time lag the ESDV to be closed to avoid the increasing in flaring capacity.