Perpustakaan Digital ITB

The oil and gas industry plays a crucial role in meeting global energy needs. Given this critical role, the reliability of the equipment used must be maintained to ensure optimal function and prevent damage. Continuous operation under specific environmental conditions and workloads makes equipment in oil and gas facilities susceptible to degradation, one of which is corrosion, which can potentially lead to system failure. This final project focuses on the analysis of corrosion occurring on equipment at the Tanjung Sekong LPG Terminal facility. Based on the results of a visual inspection, 199 corrosion locations were found spread across the spherical tank, refrigerated tank, and open rack heater areas. All corrosion findings were classified based on their type and severity through visual analysis. Of all the locations, five critically corroded components were selected for further analysis using the Fitness-For-Service method according to the API 579-1/ASME FFS-1 (2021) standard to determine operational feasibility and estimate remaining service life. The results of the corrosion severity classification showed that there were 49 low-level corrosion locations, 51 moderate corrosion locations, and 99 high-level corrosion locations. The identified corrosion types consisted of 76 crevice corrosion locations, 33 galvanic corrosion locations, 67 atmospheric corrosion locations, 20 hydrogen blistering corrosion locations, and 3 pitting corrosion locations. Based on the Fitness-For-Service analysis, all components are still operationally feasible. The pipe on the TSG-LL-6”-094-A2A-N line is the most critical component, with a remaining service life of 36 years.