The paper deals with a simulation study on a planned production plant in the brick industry. We implemented this plant in TAYLOR II. Although the boundary conditions seemed relatively simple, we had to manage a complex, non-linear system. For this reason we implemented "dynamic priority" to the main part of the system, the travelling crane. Still this sophisticated logic was not enough to guarantee good operation, because in some situations the system runs out of capacity. We then gave recommendations how to improve the situation for a perfect operation of the production system. For this purpose we finally made an analysis of the necessary investment costs against the running costs caused by system breakdown.