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Prepared by Bhakti Joshi June 27, 2014
Plant Layouts Prepared by Bhakti Joshi June 27, 2014
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Class Activity Steel Iraq Indian Railways US Economy India’s Trade
NHAI Bonds Excise Duty Natural Gas Stock markets Defense Industry Water Transport Agricultural Prices Banking Coal Mutual Funds Airlines Employment Consumer appliances Anti-dumping duties Cement Telecommunication Maharashtra Government Non-Government Organizations Mobile Phones Premium Goods
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Class Activity Review Team 1 Team 2 Team 3 Team 4 Team 5 Team 6 Team 7
9 Teams Constraints: 1 copy of 5 Newspapers; (Time is given) 3 Teams hoarded on 1 Newspaper – Not Optimal Couple of Teams had 1 resource writing maximum articles – Not optimal (No teamwork) Many teams took photographs of articles, shared and collaborated newspapers with each other – Some teams had members not writing but allocating resources Proof-reading/editing as a critical process was missing in all teams (though many teams cross-checked for repetition of content) Team 1 Team 2 Team 3 Team 4 Team 5 Team 6 Team 7 Team 8 Team 9 Max 4 5 3 7 6 Min 2 1 Total 12 16 15 11 14 17 Newspapers #
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Examples Chemist shop Tailor Shop Kiraana Restaurant College
Grocery store in a mall Movie Theatres
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Organisation’s context…
There are plant layouts “…floor plan for determining arranging the desired machinery and equipment of a plant to permit the quickest flow of material at the lowest cost and with the least amount of handling in processing the product from the receipt of the raw materials to the shipment of the finished products.”
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Why Layouts? Efficiency in use of workers and space
Minimisation of material handling costs Elimination of unnecessary movements of workers and materials Minimisation of production and customer time Elimination in delays Safety and improved working conditions Attainment of product/service quality
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Types of Plant Layouts PROCESS PRODUCT FIXED POSITION CELLULAR
COMBINATION
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Process Layout: Example 1
Sewing Stitching Embroidery Output
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Process Layout: Example 2 (Metal)
# * * Lathe is a machine in which work is rotated about a horizontal axis and shaped by a fixed tool # Milling machine creates corrugated edges like in a coin Source: Google Images, Transtutors.com
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Process Layout Also known as functional layout
Evolved from handicraft production Grouping the same kinds of machines in one department
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Process Layout – Key Principles
Minimum distance between departments Departments in a sequence of operations Convenience for inspection and supervision
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Process Layout: Advantages and Disadvantages
Flexibility Utilisation Cost Excess material handling System Protection Difficulties in operations control Economies of Scale Is this layout meant for bulk orders or small orders? Incentives for Workers
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Product Layout: Example
Making a boat …? How was it made…? What were it’s input…? Could be taught…? Could it be replicated …?
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Product Layout Also known as straight- line layout
Sequence of workstations interconnected in one line Work done in small amounts
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Product Layout – Key Principles
Specific volume to be manufactured/serviced Stable product demand Product Standardisation Continuous material supply
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Product Layout: Advantages and Disadvantages
Simplicity Dull and repetitive Small Space Product variety is limited Optimum cost of materials Fault in one can affect all Is this layout cost-effective? Time efficiency High capital investments Limited skill sets Inelastic capacities
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Fixed Position Layout: Example
Paper boat versus the real one? Operations in hospitals? Manufacturing a plane
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Fixed Position Layout: Example (Contd…)
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Fixed Position Layout Job done at a fixed position
The main equipment/s, heavy materials, sub-assemblies, etc., remain fixed Completion done by movement of machines, workers and tools
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Fixed Position Layout: Advantages and Disadvantages
Easy for immobile products High capital investments Flexibility Large storage spaces Possibly cost-effective Careful planning Feasible for large projects Can such layouts be discouraged completely?
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Cellular Layout: Example 1
Source:
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Cellular Layout: Example 2
Source:
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Cellular Layout Also known as functional layout
Suitable for large variety of products in small volumes Based on Group Technology (GT) principle Parts with similar product design characteristics Parts with similar process characteristics
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Cellular Layout: Advantages and Disadvantages
Flexibility Requirement of skills Small batches of production Possibility of imbalances Higher machine utilisation Disadvantages of process and product layouts Workers’ empowerment What kind of businesses will require cellular layouts? Low cost of production
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Combination Layout Hybrid Layout Mixture of three main layouts
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