How Do I Interpret My CRP Results?

The process of determining how much labor and machine resources are needed to complete a production task. In the MRP system, the released shop order and planned order are inputs for capacity requirement planning. Capacity demand planning converts these orders into hours worked in different time zones and work centers. Sometimes this situation occurs. The analysis of rough capacity planning believes that the company's existing production capacity is sufficient to complete the main production plan, while the capacity demand plan is analyzed in more detail and concludes that the production capacity is insufficient in some time periods.

CRP

Capacity Requirements Planning ( CRP ) The process of determining how much labor and machine resources are needed to complete production tasks. In the MRP system, the released shop orders and planned orders are the inputs of the CRP. CRP converts these orders into work hours in different time zones and different work centers.

The preparation of the main production plan needs to use the plan to evaluate whether it is feasible, including whether production equipment can be guaranteed and whether production capacity arrangements are reasonable. If out of order, adjust production

The broad capacity planning is divided into rough capacity planning (RCCP,

Capacity requirements plan to

The rough capacity plan (RCCP) is run with the master production plan (.MPS). It is a medium-term plan. At this time, only the final product is planned. Generally, only plan orders are considered. Because the demand for all materials has not yet been calculated at this time; it is not yet possible to know the load situation of all work centers, and only a rough estimation of the load of key work centers (bottleneck processes) can be made based on experience.

There are several ways to run rough planning.

1. List of resources

Explain the quantity of each product and the number of hours of load of the key work center each month, and compare with the capacity of the key work center. Table 16.6 is a simplified example that only shows the load of three products A, B, and C in a certain month, indicating that there is a problem with the capacity of the milling and boring machine in this month, but it does not exceed the maximum capacity, which may be solved through overtime.

A load-capacity comparison table for each of the key work centers for each month of the year can also be listed.

The resource list is a common method of traditional MRP courses. Because at the MPS level, the product structure has not been fully developed, and it cannot be analyzed in detail by period. In order to make up for this shortcoming, a concept of offset days is proposed, and the time period of the key work center will be used for further refinement, see the next section.

2. Determine start and end times for using key work centers

With reference to historical data, estimate that the key work center of each product deviates from the start and end dates of the delivery date, and shows whether there is a problem with capacity. The time interval from the start date of the key work center to the lead time is called the offset time (daysoffset or lead-timeoffset). As shown in Figure 16.6.

Abbreviation for "C-Reactive Protein"

Abbreviation for "C-Reactive Protein"

It is an acute phase (phase) protein, also known as

ABC Classification For all materials in stock, ABC classification is sorted according to the annual monetary value from large to small, and then divided into three categories, which are called A, B, and C, respectively. Class A materials have the highest value and are highly valued. Class B materials in the middle are less valued, while Class C materials are low in value and only routinely controlled and managed. The principle of ABC classification is to save energy by relaxing the control and management of low-value materials, so that the inventory management of high-value materials can be better.

Available-to-Promise The amount of the company's inventory or planned production that has not yet been contracted. This number can usually be calculated from the master production plan and continuously adjusted as the basis for the sales contract.

The Backflush method is based on the output of the produced assembly, and the amount of parts or raw materials used for the assembly or sub-assembly is deducted from the inventory by expanding the bill of materials.

Backlog All outstanding customer orders, that is, customer orders that have been received but not yet shipped.