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Rough-Cut Capacity Planning
Rough-Cut Capacity Planning
Rough-Cut Capacity Planning is the process of testing the master schedule against capacity constraints in the manufacturing process. The Master Scheduling system allows the definition of key facilities—those work areas that are most likely to present capacity problems—and then calculates the load at each key facility against the tentative or final master schedule. Before implementing a proposed tentative or simulated schedule, the planner can analyze its resource implications and modify it accordingly. Once the final schedule is generated, it may also be tested against key facility capacity.
Key facilities are defined and maintained in the Master Scheduling module. A key facility may be a workcenter, a department, or a group of workcenters. A key facility may also be plant specific, or may include areas in more than one plant. The Key Facility Maintenance conversation allows easy entry, review, and update of key facilities.
The Key Facility Load process involves two steps. A planned routing is generated automatically by the system based on each part's bill of material and routing profile, as well as the key facility definition. The planned routing reflects a relationship between a master scheduled part and key facilities, considering all levels of the bill of material. For each key facility/master scheduled part relationship, a profile of load is created. This shows the load per piece by day. The planned routing serves as an approximation of load that can be used to assess, online, the effect of a change in schedule on key resources.
The Key Facility Load Report shows the total load at each key facility, highlighting any periods where capacity is exceeded. The related online Key Facility Load Inquiry also shows load by periods and allows the planner to review load detail at a key facility. This displays the parts contributing to the load and the orders or schedules for each part. For both the report and the inquiry, the simulated, tentative, or the firm schedule may be used as the basis of the load calculation. Both the report and inquiry programs may be run for a specific plant or for all plants.
A workcenter is assigned to a key facility in the Workcenter Maintenance conversation, which is found in the Manufacturing Engineering module.
The Planned Routing Generation creates a resource profile for a particular part/plant/key facility. If desired, this resource profile can be manually entered using the Resource Profile Maintenance conversation, and a by-pass flag can be set so that the record will be untouched by a subsequent Planned Routing Generation.
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