ANALISIS RELIQUEFACTION TERHADAP PROSES LOADING PROPANE DAN BUTANE DI MT. VICTORIA LYRA

Abstract

This thesis discusses the analysis of reliquefaction on the loading process of propane and butane in MT. Victoria Lyra. The background of this research is based on direct field findings indicating that a reliquefaction system is essential to prevent excessive pressure buildup in the tanks, temperature discrepancies between the cargo and the terminal, and to maintain the liquefied gas cargo to prevent evaporation. The reliquefaction system does not operate optimally because the cargo compressor is not utilized to convert vapor back into liquid, which would prevent venting (the release of gas vapor through the vent mast). This venting leads to a reduction in the gas cargo. The focus of this research is to identify the causes of pressure increases in the tanks, temperature mismatches in the cargo, delays in the loading process, and the loss of gas cargo. The study aims to determine appropriate solutions to these problems. This research employs a qualitative approach with data collection techniques including observation, documentation studies and literature reviews. Based on the findings, the causes of pressure increases in the tanks, temperature mismatches in the cargo, loading process disruptions, and gas cargo loss can stem from various factors, such as human error, environmental conditions, and equipment malfunctions. Education on the reliquefaction system is crucial for the ship’s officers handling gas cargo. The proposed solutions in this study include conducting training for ship officers and crew members on the importance of monitoring tank pressure and educating officers about the reliquefaction system to prevent excessive pressure and temperature discrepancies in the cargo. The study concludes that the reliquefaction system can mitigate various issues related to gas cargo and help maintain its stability.