layout - Chapter 6 Process Design and Facility Layout 1...

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1 Chapter 6 Process Design and Facility Layout
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2 Introduction Make or Buy? Available capacity, excess capacity Expertise, knowledge, know-how exists? Quality Consideration, specialized firms, control over quality if in-house The nature of demand, aggregation Cost Make some components buy remaining
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3 Introduction Process selection Deciding on the way production of goods or services will be organized Major implications Capacity planning Layout of facilities Equipment, Capital-equipment labor intensive Design of work systems New product and service, technological changes, and competitive pressures
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4 Forecasting Product and Service Design Technological Change Capacity Planning Process Selection Facilities and Equipment Layout Work Design Figure 6.1 Process Selection and System Design
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5 Process Types Job Shops: Small lots, low volume, general equipment, skilled workers, high-variety. Ex: tool and die shop, veterinarian’s office Batch Processing: Moderate volume and variety. Variety among batches but not inside. Ex:paint production , BA3352 sections Repetitive/Assembly : Semicontinuous, high volume of standardized items, limited variety. Ex: auto plants, cafeteria Continuous Processing: Very high volume an no variety. Ex: steel mill, chemical plants Projects: Nonroutine jobs. Ex: preparing BA3352 midterm
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6 Variety of products and services How much Flexibility of the process; volume, mix, technology and design What type and degree Volume Expected output Job Shop Batch Repetitive Continuous Questions Before Selecting A Process
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7 Dimension Job Shop Batch Repetitive Continuous Job variety Very High Moderate Low Very low Process flexibility Very High Moderate Low Very low Unit cost Very High Moderate Low Very low Volume of output Very low Low High Very high Product – Process Matrix
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8 Product Variety High Moderate Low Very Low Equipment flexibility High Moderate Low Very Low Low Volume Moderate Volume High Volume Very high Volume Job Shop Batch Repetitive assembly Continuous Flow Variety, Flexibility, & Volume
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9 Process Type High variety Low variety Job Shop Appliance repair Emergency room Batch Commercial bakery Classroom Lecture Repetitive Automotive assembly Automatic carwash Continuous (flow) Oil refinery Water purification Product – Process Matrix
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10 Product-Process Matrix Flexibility-QualityDependability-Cost Continuous Flow Assembly Line Batch Job Shop Low Volume One of a Kind Multiple Products, Low Volume Few Major Products, Higher Volume High Volume, High Standard- ization Book Writing Movie Theaters Automobile Assembly Sugar Refinery Flexibility- Quality Dependability- Cost
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11 Fixed automation: Low production cost and high volume but with minimal variety and high changes cost Assembly line Programmable automation: Economically producing a wide variety of low volume products in small batches Computer-aided design and manufacturing systems (CAD/CAM) Numerically controlled (NC) machines / CNC
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layout - Chapter 6 Process Design and Facility Layout 1...

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