Abstract
In the prefabricated concrete panel production, both the panels of special item ordered y a customer and a standard item are produced through the same process, where each metal form is required to produce each panel. The former cannot be produced until the order arrives, while the latter is produced with the forecasting information. In this paper, we develop a simple model of such production systems and analyze experimentally the relation between the parameter indicating the number of adding forms and average utilization of the form for standard item, average process utilization, and average shortage for requirement levels of standard item. Therefore, the experimental approximate equations for average utilization of the form and average process utilization are presented.
