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chapter 14: material requirements planning
Karten in diesem Stapel (18)
- 1independent demandfinished goods, and is steady demand
- 2dependent demandraw materials, parts, sub assemblies that are used in the production of finished goods
it is lumpy demand - 3what makes the dependent demand easier to estimateonce we know the independent demand we will know the independent demand
- 4MRP (material requirement planning)a computer system that translates master schedule requirements into time based requirements for parts, raw materials, and sub assemblies
- 5what does MRP determinewhen and how much to order
- 6benefits of MRP1. better response to customer offers
2. faster response to market changes
3. improved utilization of facilities and labor
4. reduced inventory levels - 7MRP inputs1. master production schedule
2. bill of material
3. inventory levels, lead time, open orders - 8master production schedulestates what items are to be produced, when they are needed, and in what quantities
- 9bill of materiallisting of all parts, sub assemblies, and raw materials to create one unit of product
- 10inventory recordsincludes information on the status of each item by item period
- 11what are the inventory records1. gross requirements
2. lead time
3. scheduled receipts
4. amount on hand
5. lot sizes - 12gross requirementstotal expected demand during a time period
- 13projected on handexpected inventory on hand at the beg of the period
- 14net requirementsactual amount needed in each period
- 15lot- for- lot orderdetermine orders based on requirements
- 16lot-size-orderingplanned receipts may exceed net requirements
- 17safety stockidentify activities or operations that are subject to variability
use concept of safety times for variable lead times - 18lot sizingchoosing a lot size for purchase or production
fixed interval ordering
part-period method
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- operations management Karteikarten am chapter 14: material requirements planning , erstellt von omar mourad am 09/12/2017.
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