Majid Ebrahimzadeh - Department of Industrial Engineering, Faculty of Industrial and Mechanical Engineering Islamic Azad University, Qazvin, Iran
Masoud Arjmand - Department of Industrial Engineering, Faculty of Industrial and Mechanical Engineering Islamic Azad University, Qazvin, Iran

in this paper, Karaj oil depot, which provides different services in the field of fuel, is investigated. The company management is seeking a way to reduce the tanker’s waiting time in the queue in order to increase efficiency. To do so, the queue system is simulated via ED software tool. After validating the model, three different scenarios are presented to enhance the performance of the system. Since each situation has a different outcome in terms of cost and waiting time, a MADM approach called TOPSIS is employed to prioritize scenarios and identify the best one.

Simulation based on optimization, Enterprise Dynamics, queue system, fuel storage.