CH 13 - MRP & ERP Flashcards
Dependent demand
Demand for items that are subassemblies or component parts to be used in the production of finished goods.
Material requirements planning (MRP)
A methodology that translates master schedule requirements for end items into time-phased requirements for subassemblies, components, and raw materials.
Master schedule
states which items to be produced, when and how many.
Primary inputs of MRP
- Master schedule
- Bill of materials
- Inventory records
Bill of materials
Lists raw materials, parts, and assemblies needed in producing 1 unit
Inventory records
Information on the status of each item by time period
Gross requirements
Total expected demand for an item or raw material in a time period
Scheduled receipts
Open orders schedules to arrive from vendors or elsewhere in the pipeline
Projected on hand
Expected amount of inventory that will be on hand at the beginning of each time period
Net requirements
Actual amount needed in each time period
Pegging
Identifying the parent items that have generated a given set of material requirements for an item
Benefits of MRP
- Low levels of in-process inventories, due to an exact matching of supply to demand.
- keep track of material requirements.
- evaluate capacity requirements generated by a given master schedule.
- A means of allocating production time.
- easily determine inventory usage by backflushing.
Backflushing
Exploding an end item’s BOM to determine the quantities of the components that were used to make the item.
ERP
Integration of financial,
manufacturing, and human resources in a single database