In MRP, an order by item (what, by when, how many/much) is generated by obtaining the item data using Bill of Materials according to the production plan. At this point, a concept of process does not still exist. But an object is, actually, produced through a number of processes. It is called Process Explosion to refer to Routings (Bill of Operation), take the manufacturing order to processes, and then issue an operation order by process. By performing the Process Explosion, the necessary processes to produce an item, the order for performing them, the labor hours in each process, and etc. are fixed. Process Explosion is the first function of the manufacturing process control, and based on the operation order issued at this point, loading or leveling is performed.


Related term: Capacity Requirements Planning CRP, Rough-cut Capacity Planning RCP