The Injection Department of PT Omni Kemas Industry has several problems in machinesâ breakdown and in forecasting the customersâ demand. Besides that, the company also wants to maximize their profit. Therefore, the aim of this final assignment is to minimize the machinesâ breakdown, demand forecasting and profit maximizing. This final assignment counts the frequencies and intervals of preventive replacements and inspections based on preventive maintenance method and also forecasts customersâ demand based on the smallest error generated by the methods. Then, the outputs from the preventive maintenance and demand forecasting are used in production amount optimalizing process in order to gain profit maximizing.
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