Abstract: A computer system for determining the costing of the manufacturing process for a product. The computer system includes the combination of a data base computer and a manufacturing cost computer, the cost computer including a central processor, a memory, and a direct access storage device with tables of data including a product mix table, an equipment table, an overhead table, a direct material table, a direct material standard usage table, and a rework table, the system for preparing data for use in costing, calculating hourly rates for a part, calculating final costs for a part; and calculating part costs for a part.

Abstract: A process is provided for operating a manufacturing plant subsequent to preventative maintenance steps. The steps of the process are the following. Provide a data processing system having memory means for data storage. Provide central processing means for (a) accessing data from the memory means, (b) receiving data from data input means and (c) supplying data to the memory means. Provide Preventive Maintenance (PM) Duration (D) data to the data processing system. Calculate the effect of a PM schedule upon the efficiency of operation of the plant. Provide a new PM schedule to improve the efficiency of operation of the plant.