Project
Computer Simulation
Lubricating OIL COMPANY
1. Problem Formulation
A manufacturing system produces Lubricating oil: P1, P2, and P3. There are four Vacuum Distillation Unit (labeled DU1 - DU4), three Extraction Unit (EU1 - EU3), two Removal Unit (RU1 - RU2), two Additive Unit (AU1 - AU2).
All products require a deterministic transit time to move from one process to the next. When the parts arrive at a Unit station, they are placed in a buffer for holding. I assume that the buffers have a sufficiently large capacity to accommodate the arriving parts. The parts are removed from the buffer as soon as a machine is available for processing. The path network and the resources characteristics of the transportation are also known. The Vacuum Distillation Unit fail as a function of the number of times they operate on parts and that the time for flushing, cleaning and waiting time for repair service are known.
The Production Engineer has been tasked to develop an animated discrete-event simulation model of the system. In specific, the modeler is tasked to compare the downtime for the Vacuum Distillation Units in several scenarios and determine the throughputs and utilization of processing locations with ultimate production rate 300 barrel per day. However, some structural improvements may be suggested as a by-product of the simulation. Processing times for the parts are deterministic and are indicated in Table 1
Table 1. Processing time in minutes for products.
Machine: P1 P2 P3
Distillation 17 - -
Extraction - 12&n ...