Surveying compressor C-2501 vibration problem by analysis of vibration and its analytical report

Nowadays maintenance based on condition monitoring is pioneer in industries, especially petrochemical industries which its distinctive feature will be continuous service without premature stop the machinery. It has a direct influence in the process and product. When the vibrations in a machine increases, this increasing has a logical reason, it could be a mechanical problem if there are no transient conditions or not properly installed or bad operation or inappropriate design. Diagnosis of a multi-stage turbocompressor that have common signs of some mechanical faults with the correct evaluation and correction could be considered useful and valuable experience. This case study was done by vibration, phase, coast down and orbit analysis then unbalance of rotor was diagnosed and confirmed by condition monitoring department. Olefin plant production capacity and revolution of turbine have direct proportion, in other words rising of turbine revolution will cause increasing of production capacity. Vibration amplitude in high pressure compressor were been proportional with square increasing turbine revolution. So that this rising of vibration and reaching to the danger threshold had been caused restriction of plant production capacity or reducing production. Finally HP compressor was dismantled and observed foreign substance in inlet suction 4th stage.