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

The 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, maintenance and so on. Comparisons between this survey and a survey from the IEEE have been carried out. The report also pays some attention to methods for monitoring of machinery and detection of faults