Penjadwalan Perawatan Pada Sistem Pendingin Main Engine Kapal TSHD King Arthur 8 Dengan Pemodelan Dinamika Sistem

The Trailing Suction Hopper Dredger is a dredger that can solve problems that often arise in port shipping channels, namely sedimentation or silting. TSHD ships are expected to be able to carry out their functions without failure, where all aspects that influence failure must be anticipated, especially failures in the main engine cooling system. Therefore, in this research, maintenance scheduling was carried out on the main engine cooling system components of the TSHD King Arthur 8 ship by identifying failures using Fault Tree Analysis (FTA), calculating component and system reliability values, and modeling system dynamics (dynamic simulation) using Powersim Studio software. After that, determine the maintenance scheduling strategy based on the most optimum maintenance cost analysis. From the research results, it was found that there were 12 components that caused the failure of the ship's main engine cooling system, of which one component, namely the fw cooler, had the lowest reliability value of 0.60007 at 720 hours. Based on the results of system dynamics modeling, a preventive maintenance strategy is more effective for the components of globe valve ps, strainer ps, globe valve sb, strainer sb, sw pump, fw pump, thermostatic valve, inlet water main pipe, outlet water main pipe, water cooled insulation cover, and expansion water tank because the costs incurred are lower than corrective maintenance. Meanwhile, for the fw cooler component, corrective maintenance was chosen because the costs incurred are lower than preventive maintenance.