Paper Title
Environmental Impact Analysis of Natural Gas Production and Distribution Process using Life Cycle Assessment (LCA)

Abstract
Natural gas is one of the most interesting fossil fuels because can be used to meet various energy needs, such as fuel for the community and the main needs for other industries. The initial process of taking gas from the well, then the next process is carried out to the distribution stage which requires fuel to be used as natural gas products. Most of the natural gas content is in the form of methane which has the potential to form high greenhouse gases. The increase in the production process and distribution of natural gas will lead to an increase in environmental pollution caused by the higher amount of methane gas. This research is based on the approach to identify the potential environmental impact of the operating unit production process and distribution of natural gas based on the cradle to gate approach with natural gas as the main product. Environmental impact assessment with LCA shows that the production process of 1 ton of natural gas contributes a greater impact, namely 5.3164 Pt than the distribution process of 1 ton of natural gas, which is 0.1450 Pt. In the natural gas production process, the largest environmental impact contribution comes from the Compressor C-1A, Compressor C-1B, and Glycol Reboiler process units. In the natural gas distribution process, the largest environmental impact contribution comes from the Flarestack process unit. The uncertainty analysis emission data of the production process of 1 ton of natural gas contributes to the environmental impact between 4.85-5.87 Pt and the distribution process of 1 ton of natural gas contributes to the environmental impact of 0.14496 Pt. Keywords - Distribution Process of Natural Gas, Environmental Impact, Life Cycle Assessment (LCA), Natural Gas, Production Process of Natural Gas.