Production System and Simulation

A plastic injection molding plant will be built to produce 5 million molded parts per year. The plant will run three 8-hour shifts per day, five days per week, 40 weeks per year. For planning purposes, the average batch size =5000 moldings, average changeover time between batches =7hrs, and average molding cycle time per part =30 sec. Assume scrap rate =2 percent, and average uptime proportion (reliability) per molding machine =97%, which applies to both run time and changeover time. Determine the following: I. Production Work Load (2 marks) II. Number of Batches (2 marks) III. Available time (3 marks) IV. Number of workstations