Abstract:
The use of B40 biodiesel fuel on board TB. Intan Megah 24 has caused problems in the
diesel generator fuel system, leading to decreased performance and operational
disturbances, such as unstable engine speed and blackout incidents. These problems are
triggered by fuel quality degradation due to water contamination, oxidation, and sludge
formation, as well as suboptimal injector performance that results in uneven fuel
atomization. This study aims to analyze technical strategies for maintaining the quality of
B40 fuel and to formulate maintenance strategies to sustain diesel generator performance
during vessel operations.
This research employed a descriptive qualitative approach through onboard observation,
interviews with the Chief Engineer and superintendent, and documentation studies of the
Planned Maintenance System (PMS), log books, and manufacturer manuals. The analysis
was conducted by comparing actual operating conditions with theories related to B40
biodiesel characteristics and diesel engine maintenance principles.
The results indicate that B40 fuel quality can be maintained through proper management
of clean and sealed fuel storage systems, routine drain water procedures, condition-based
enhancement of filtration systems, and PMS adjustments that do not rely on conventional
diesel fuel standards. In addition, preventive and condition-based injector maintenance
through nozzle cleaning or replacement, injector calibration, and monitoring of exhaust
gas temperature has been proven to improve atomization quality. Based on the findings
of this study, integrated technical and maintenance strategies effectively ensure fuel
supply stability and sustain the reliability and performance of the diesel generator during
vessel operations.
