Expenses were reduced by 2260.56 dollars per month on operational supplies, maintenance, processes, and materials. The maximum and minimum rule was applied within the tool CREB. We expect to continue reducing costs of spare parts and supplies. Supplier lists were created to determine what needs to be purchased from each one according to delivery times, and it was proposed that everything we need in a month should be ordered twice a month, every 15 days, for better control. Similarly, an input and output format for supplies and changes with the core was created. ...