Abstract:
This study aims to analyze the causes of the performance decline of the Fresh Water
Generator (FWG) onboard the SS. ENERGY FRONTIER and to determine appropriate
corrective measures to restore freshwater production capacity to normal levels. Based
on operational data and the ship's logbook, a significant decrease in freshwater
production was observed, dropping from a normal capacity of 30 tons/day to 15 tons/day.
The data collection methods employed in this study included field observation, in-depth
interviews with the Chief Engineer and Second Engineer, and documentation analysis
through the Planned Maintenance System (PMS). The data analysis was conducted using
the Fishbone (Ishikawa) diagram to identify contributing factors,
specifically Man (Manpower), Machine, and Method. The results indicate that the
decline in the FWG system’s efficiency was primarily caused by damage to the sealing
groove on the evaporator plates, which led to leakage, as well as scale accumulation on
the heat exchanger surfaces due to poor seawater quality and suboptimal cleaning
schedules. Recommended remedial actions include a comprehensive overhaul,
replacement of deformed components, and stricter crew adherence to scheduled
maintenance procedures to prevent future system performance degradation.
