OPTIMISASI POLA PENGISIAN ULANG TANGKI DAN OPERASI KAPAL TERMINAL BAHAN BAKAR MINYAK PONTIANAK

• Main Author: Murtafa Amal Alaudin, Ghani
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/66054
• Institution: Institut Teknologi Bandung

Oil product storage is a downstream inventory and distribution facility. Oil product storage in Pontianak with the coverage of West Kalimantan Province is located on the side of Kapuas River, in which all supply for the facility must be carried out by oil vessel. Stock resilience is an important indicator in oil product storage performance. One of the performance measures of the facility in terms of stock resilience is coverage days, number of days which the facility could serve demand without no new supply. The performance of three products with highest demand contribution in 2020 is only 2.2 days, 7 days, and 2.1 days. Those number are significantly under the existing standard, which are 23 days (BPH Migas), 21 days (Pertamina), and 18 days (Kementerian ESDM). Supply planning in Pontianak’s oil product storage is currently decided using subjective judgement of the facility’s supply planner, which is difficult to achieve optimal supply plan considering there are many things to take into account. This research objective is to develop a replenishment schedule model which considers coverage days standard, vessel availability, demand volume, supply points capacity, and Kapuas River’s tide with minimum cost. Model was developed using discrete-event systems (DES) and mixed-integer linear programming (MILP) concepts. Compared with historical data, the model’s coverage days performance is higher for three lowest coverage days performance products increased by 148%, 15%, and 78%. The increase in coverage days also followed by a significant transportation cost reduction by 46% or equal to 3.5 billion rupiah. The increase in performance could be strong evidence that the model developed in this research can be effectively used in oil product storage Pontianak or any other oil product storage that has similar characteristics.