Antisurge control system is very important for compressor safety
What factors lead to a surge ?
Start up / Shut down
Gas Composition Changes
Filter strainer problems
What happens approaching surge?
Delta P across compressor rises
What happens during a surge ?
Compressor loses ability to further increase pressure
Delta p across compressor losses
Low frequency vibration
Rising temperature inside compressor
Potential effects of a Surge
Compressor trip resulting in a plat shut down
Compressor internal damages