OPTIMALISASI PENGGUNAAN GAS COMBUSTION UNIT (GCU) UNTUK MENJAGA STABILITAS TEKANAN TANKI LNG PADA KAPAL PGN FSRU LAMPUNG

Abstract

Abdillah, Danindra. 364210857. 2025. “Optimization of Gas Combustion Unit (GCU) Usage to Maintain LNG Tank Pressure Stability on PGN FSRU Lampung Vessel” This research is titled “Optimization of Gas Combustion Unit (GCU) Usage to Maintain LNG Tank Pressure Stability on PGN FSRU Lampung Vessel.” The study aims to analyze two major issues encountered on board the PGN FSRU Lampung: (1) The irregular regasification schedule, and (2) The ineffective timing and suboptimal operation of the GCU due to this irregular schedule and technical disturbances such as trips and blackouts. A qualitative method was used, involving direct observation of the regasification process and GCU operation. Data were collected from operational logs, crew interviews, and equipment manual references. The analysis revealed that irregular regasification schedules lead to the accumulation of Boil-Off Gas (BOG) in storage tanks, resulting in increased tank pressure and the need for timely GCU activation. However, the GCU was often underutilized due to uncoordinated scheduling and insufficient operational readiness. Proposed solutions include implementing an integrated regasification scheduling system with the off-taker (PT PGN), standardizing GCU activation procedures, optimizing GCU operation to its maximum designed capacity, and introducing an integrated monitoring and alarm system to improve responsiveness. The findings are expected to support improvements in the efficiency and safety of FSRU operations.