A simulation study for a coal delivery system

Abstract

This paper discusses a computer simulation model that was constructed to assist in evaluating alternatives for a coal delivery system. A complex system, involving unit trains, intermediate storage, transshipment and lake vessels is required to transport the coal over the 1700 mile distance. The vessel delivery leg is the most critical, as the trains may run all year long, but the Great Lakes shipping season is only eight months long. The paper describes the simulation model, and how the interactions of the system are modeled. The simulation model will assist with the evaluation of different options that are available for new vessels, required because of an impending increase in coal demand. Several areas are identified where efforts could be directed to increase coal throughput.