Lecture 09 (6 slides per page)

Lecture 09 (6 slides per page) - BUS 105: Production and...

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BUS 105: Production and Operations Management Copyright: Mohsen ElHafsi 2011 1 BUS 105 Production/Operations Management Material Requirements Planning Material Requirement Planning Computer-based information system that translates master schedule requirements for end items into time-phased requirements for subassemblies, components and raw materials components, and raw materials Provides time scheduling information specifying when each of the materials, parts, and components should be ordered or produced Driven by dependent demand MRP Objectives Improve customer service Reduce inventory investmen investment Improve coordinating production and thus, plant operating efficiency Independent vs. Dependent Demand Independent Demand (Demand for the final end-product or demand not related to other items) Dependent Demand Finished product (Derived demand items for component parts, subassemblies, raw materials, etc) Component parts Master Production Scheduling Time-phased plan specifying how many and when the firm plans to build each end item Aggregate Plan (Product Groups) MPS (Specific End Items) From Aggregate plan to MPS Month 1 2 Mattress production 900 950 Aggregate production Plan for mattresses 12345678 Model 327 200 400 200 100 Model 538 100 100 150 100 Model 749 100 200 200 Master Production Schedule for mattress models
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BUS 105: Production and Operations Management Copyright: Mohsen ElHafsi 2011 2 Demand For Products Firm orders from known customers Example: generated by sales personnel, or from inter department transactions Carry promised delivery dates No forecasting involved in these orders Forecast demand Independent-demand orders generated through forecasting techniques The two demands are combined and become the input for the MPS Firm orders from known customers Forecasts of demand from random customers Aggregate product plan Engineering design changes Inventory transactions Master production Schedule (MPS) Materia Bill of material file Inventory record file Primary reports Secondary reports Planned order schedule for inventory and production control Exception reports Planning reports Reports for performance control Material planning (MRP computer program) MPR Inputs Master Production Schedule (MPS) Bill of material Inventory records Bill of Materials The bill of materials (BOM) file is a listing of all of the raw materials, parts, subassemblies, and assemblies needed to produce one unit of a product. The BOM file is often called the product structure tree or product tree It shows how a product is put together END ITEM 1 S/A 2 S/A S/A = subassemblies FP = fabricated part PP = purchased part RM = raw material Product Structure Tree Example 3 PP 7 RM 4 S/A 5 S/A 6 FP 8 PP 9 FP 10 PP 11 PP 12 PP 13 RM 14 RM 15 RM Chair Level 0 BOM Example Seat Leg Assembly 1 2 Back Assembly
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This note was uploaded on 06/01/2011 for the course BUS Business 1 taught by Professor B.mishra during the Spring '10 term at UC Riverside.

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Lecture 09 (6 slides per page) - BUS 105: Production and...

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