A survey of faults on induction motors in offshore oil industry, petrochemical industry, gas terminals, and oil refineries

This report presents a survey of the reliability of squirrel cage motors on board drilling, production, and other platforms offshore, together with cage motors in the petrochemical industry, gas terminals, and refineries onshore. Most of the activity in this connection is related to The North Sea that offers a tough environment for motors. The collected data have been treated statistically, and the faults sorted according to supply and motor data, driving conditions, electrical protection, maintenance, and so on, and further analyzes failure-initiators, contributors, and underlying causes. Comparisons between this survey and a survey from the IEEE Motor Reliability Working Group [8] have been done. The report also pays some attention to methods for monitoring of machinery and detecting of faults.>