Timely trip of a LDPE hyper compressor Hyper compressor plunger with markings caused by metal chips from packing Monitored Machine The monitored machine is a secondary high pressure compressor (Hyper) in Ethylene service of LDPE production line.K12 Hyper compressor What happened? Sequence of events On March 29, the PROGNOST System tripped the Hyper compressor in consequence of high plunger vibration on cylinder 2A Vertical position lead LDPE unit for total shut down The Maintenance group of the customer, started the root cause analysis with assistance of the PROGNOST Systems Customer Support team, they analyzed the data and ?nally recommended to open the cylinder for inspectionTrend over 60 minutes of plunger position Peak-to-Peak values Findings As a result of the cylinder opening the fol

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