Abstract:
This study aims to analyze the causes of surging in the diesel engine generator turbocharger on board MV. Cosmo
Gloria and to identify the factors contributing to turbocharger shaft damage and carbon
deposit accumulation in the turbocharger housing. The surging phenomenon resulted in
loud banging noises, increased exhaust gas temperatures, reduced generator
performance, and potential mechanical damage to turbocharger components. This research employed a qualitative descriptive method with a case study approach. Data were collected through direct observation during sea practice aboard MV. Cosmo
Gloria, interviews with engine officers, documentation, and literature studies. Data
analysis was conducted using the Fishbone Diagram to identify the root causes of the
problem and the USG (Urgency, Seriousness, Growth) method to determine the priority
of corrective actions. The results indicate that surging in the generator turbocharger was influenced by
damage to the rotor shaft and turbocharger bearings caused by irregular implementation
of the Planned Maintenance System (PMS), deterioration of lubrication quality, and
inadequate spare parts management. Furthermore, carbon deposits accumulated in the
turbocharger housing due to weak PMS implementation, These conditions caused the
lubricating oil temperature to increase and oil pressure to decrease, thereby threatening
generator reliability and the continuity of the vessel’s electrical power supply. The study
also found that inadequate maintenance management was a major contributing factor to
the decline in turbocharger performance. Based on the findings, preventive measures include improving compliance with the
Planned Maintenance System, conducting regular inspections and cleaning of the
turbocharger, monitoring the lubrication system, enhancing spare parts management, and implementing Condition-Based Maintenance (CBM). These efforts are expected to
maintain the reliability of the generator turbocharger and minimize the risk of surging occurrences
