Perpustakaan Digital ITB

The oil and gas industry plays an important role as the main energy source to meet the world's energy needs. Pipelines, as one of the modes of transporting oil and natural gas, needs to operate safely to prevent losses that are harmful to humans and the environment. One of the ways to ensure pipeline safety is by doing risk assessment, including consequence analysis. This final project carries out the consequence analysis of MOL (Main Oil Line) pipeline that transports fluids from LPRO (LIMA Production) to NGLJ (NGL-Junction) in Northwest of Java. This study uses modified API 581 RP as the methodology to assess the consequence level. The consequence aspects considered in this study are safety (Consequence area), environmental (Oil spill area), and financial consequences. Besides that, two parametric studies were conducted. The first study is to obtain the effect of operating pressure on the oil spill area. The second study is to analyze the effect of operator response time on the leak area. The result shows that the LPRO – NGLJ pipeline have a consequence category of E (catastrophic) according to the company’s internal HSSE reference and area-based consequence and financial-based consequence of D (significant) based on API 581 consequence categories. Additionally, the parametric study shows that hole sizes and operating pressure affect the spill area, but the maximum leak area is limited by the inventory fluid and operator response time plays a crucial role in limiting the spill area to prevent it from rising exponentially.