ANALISIS PELAKSANAAN TANK CLEANING PADA MUATAN MINERAL BASE OIL GUNA MENCEGAH CARGO OFF SPECIFICATION DI MT. JOY CHEMIST

Abstract

The tank cleaning process is a crucial step in tanker operations to prevent cargo contamination, especially for sensitive commodities such as Mineral Base Oil. Failure to implement effective cleaning procedures can result in the cargo failing to meet quality standards (Cargo Off Specification), which ultimately causes economic losses for both the shipping company and the customers. This study aims to analyze the implementation of the tank cleaning process, identify the factors causing suboptimal cleaning results, and formulate preventive measures against cargo off specification on MT. JOY CHEMIST. This research utilizes a qualitative descriptive method with a Fishbone Analysis approach. Data collection was carried out through direct observation, in-depth interviews with key informants on board—consisting of the Chief Officer, Boatswain, and Able Bodied Seaman (AB)—as well as documentation studies during the author's sea practice. The results show that the risk of cargo off specification stems from three main factors: weaknesses in the human, machine, and method aspects. This is indicated by a lack of crew responsibility, damage to supporting equipment such as the Butterworth machine not functioning optimally, and cleaning procedures that left moisture or residue in hard-to-reach areas like the bellmouth and the upper tank walls. As an alternative solution, this study recommends holding routine safety meetings before the tank cleaning process begins, implementing a preventive maintenance system for the cleaning equipment, and enhancing direct, multi- layered supervision by the ship's officers to ensure that tank cleanliness standards are fully met.