Abstract:
The seawater cooling system plays a vital role in preventing overheating of the MT.
JUPITER's main engine components due to combustion and friction. However, during
operation, this pump frequently experiences technical problems that hinder the engine's
heat absorption. This qualitative descriptive study aims to examine the causes of
decreased suction power in the seawater cooling pump and the factors that trigger
excessive vibration in the pump shaft, along with mitigation measures. Through direct
observation, interviews with engine room crew, and a study of the ship's manual
documentation, the data analysis indicates that the decreased suction power in the
seawater cooling pump is caused by severe corrosion in the impeller component, while
the excessive vibration in the pump shaft is triggered by physical damage to the rolling
bearing components (ball bearings). Based on these findings, it is concluded that
consistent periodic maintenance through the Planned Maintenance System (PMS) is
necessary, along with the replacement of corroded impeller components and damaged ball
bearings to restore shaft rotation stability and optimize the smooth operation of the main
engine cooling system.
