Simulation of Rail Operations at Ethanol Terminal

A large distributor was constructing several new distribution sites in its supply chain. These sites received and distributed product by rail and truck.

It was important for the client to verify the site designs in a discrete event simulation model to confirm the system could perform as expected, in addition to the operational tasks required for loading or offloading product at rail racks.

The goal of the simulation efforts were to:

• Estimate current performance of the system to determine if it can meet requirements
• Identify any bottlenecks
• Explore potential policies, such as how certain operations may need to be prioritized over others

This modeling engagement covers multiple operations at multiple sites, with multiple product types. The key outputs of the model included:

• Train turn-around-time
• Crew utilization metrics
• Utilization of key switches and track areas
• Impact of terminal switching operations on cross-grade intersections and public roads