mgsc ch 13
Terms
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- define materials requirment planning
- computer bases info system that translates the finished product requirements of the master schedule into time-phased requirements for subassemblies.
- Independant demand
- items must be carried on a continual basis
- Dependant demand
- Demand for items are lumpy, items need only be sticked just prior to the time they will be neeed in the production process.
- 3 inputs for MRP
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Master schedule
bill of materials
inventory records - List some outputs of MRP
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planned order schedules
order releases
changes
performance control reports
planning reports
exception reports - Define Master schedule
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aka master production schedule
states which end items are to be produced when they are needed and in what quantities. - Define cumulative lead time
- the sum of lead times that sequential phases of a process require, from ordering of parts or raw materials to completion of final assembly
- Define bill of materials
- one of three primary inputs of MRP; a listing of all of the raw materials, parts, subassemblies, and assumblies needed to produce one unit of a product.
- Define product structure tree
- visual depiction of the requirments in a bill of materials, where all components are listed by levels.
- Define inventory records
- one of the three primary inputs in MRP, includes into on the status of each item by time period.
- 2 methods for updating MRP
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regenerative system
net-change system - Define Planned order
- schedule indicating the amt an timing of future orders
- Define order releases
- authorization for the execution of planned orders
- Define changes
- revisions of due dates or der quantities, or cancellations of orders.
- Define exception reports
- data on any major desrepancies encountered.
- regenerative system
- approach that updates MRP records periodically
- net-change system
- approach that updates MRP records continuously
- important requirements of MRP
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A computer and necessary software
accurate and up to date master scheds bills of materials, and inventory records
integrity of file data - define MRPII
- Manufacturing Resources planning: expanded approach to production resource planning, involving other areas of a firm in the planning process and enabling capacity requirements planning.
- What is ERP
- Enterprise resorce planning: entegration of financial, manufacturing, and human resources on a single computer system.