15
7. Conclusions
Increased implementation of Computer Integrated Manufacturing concepts in the process
industry raises issues in the planning of production and maintenance within an integrated process
manufacturing system. The interactions of different production and preventive maintenance
decisions impact on the proper use of available capacity and company profits. In order to tackle
these interactions, a model was developed which minimizes several production and maintenance
related cost factors during long- or medium-term planning horizons, taking into account the
probability of break-downs.
Sequence dependent setups would make the formulation even tighter and result in a shorter
computation time. Although the model was developed for the chemical industry, it may have
useful application possibilities for the discrete manufacturing industries as well, particularly in
flexible assembly systems where a bottleneck machine (cell) exists and the production is
performed on a Just-in-Time basis.
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