Failure Analysis of Monitoring Sulfur Content of Exhaust Gas in Gas Monitor of EGCS at MV. HL Sines

The EGCS (Exhaust Gas Cleaning System) is an important system in reducing exhaust emissions, especially sulfur oxides (SOx) resulting from the combustion of fossil fuels. Failure of the gas monitor can lead to non-detection of SOx content, which risks causing air pollution and violations of MARPOL Annex VI regulations. This research aims to analyze the causes of failure in monitoring sulfur content in the gas monitor on the EGCS (Exhaust Gas Cleaning System) system on board MV. HL Sines and its impact on the environment and efforts to handle it. The research method used was qualitative, with data collection through direct observation during sea practice, interviews with ship drivers, as well as documentation and technical discussions. Data collection techniques included participatory observation, in-depth interviews with the ship's machinists, documentation of maintenance and repair activities, and a review of the EGCS (Exhaust Gas Cleaning System) manual and ship's operational records. The results showed that the main cause of failure came from the filter at the sampling point that was clogged, inhibiting the flow of exhaust gas to the detection device. Impacts included emissions data discrepancies, potential regulatory sanctions and environmental damage. Remediation efforts included filter replacement, sensor recalibration and routine maintenance procedures. This research contributes to the technical understanding of EGCS (Exhaust Gas Cleaning System) operations.