A Combined AHP and PROMETHEE Method for Selecting the LNG Receiving Terminal with Additional Safety Perspective

Abstract

In the purposes of reducing emission and as response to the global oil crisis, the Government of Indonesia is currently planning to convert some power plants and ships in Indonesia that is currently using fuel oil to be converted to natural gas (LNG). To fulfil the target, the infrastructure for LNG plant must be prepared such as an establishment of receiving terminal. One of the LNG receiving terminal that will be built in Indonesia is Makassar. The LNG receiving terminal in Makassar will be used as a hub to distribute gas to some power plants in the central part of Indonesia. Hence, this study proposes two stages of designing LNG receiving terminal. The first stage is to select the best alternatives of receiving terminal to be applied in Makassar. There are three alternatives namely: Floating Storage Unit (FSU) and Onshore Regasification; Floating Storage and Regasification Unit (FSRU); and Onshore LNG terminal. The second stage is to conduct the consequence analysis of the selected LNG receiving terminal by means of fire modelling. The selection of LNG receiving terminal in Makassar will be done using a combination of Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE) and Analytical Hierarchy Process (AHP). Since AHP has a good hierarchy structure, this method will be used as a weighting of criteria and sub-criteria. The weighting result of criteria and subcriteria from AHP process will be used for the ranking process using PROMETHEE, in this method the weighting will be multiplied with the alternatives preferences. A combination of both methods concluded that FSRU (Floating Storage and Regasification Unit) has the first rank, it means that FSRU will be applied as a LNG receiving terminal. After the selection process, the consequence analysis as well as fire modelling are conducted to assure that FSRU is safe. From the modelling, it can be concluded that only jetty and FSRU itself that will be affected by the fire event both jet fire and explosion.