Plant Layouts Prepared by Bhakti Joshi June 20, 2013.
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Transcript of Plant Layouts Prepared by Bhakti Joshi June 20, 2013.
Plant Layouts
Prepared by Bhakti JoshiJune 20, 2013
Examples
• Chemist shop• Tailor Shop• Kiraana • Restaurant• College• Grocery store in a mall• Movie Theatres
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.”
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
Types of Plant Layouts
PROCESS PRODUCT FIXED POSITION CELLULAR
COMBINATION
Process Layout: Example 1
Embroidery
StitchingSewing
Output
Process Layout: Example 2 (Metal)
Source: Google Images, Transtutors.com
*
* 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
#
Process Layout
• Also known as functional layout
• Evolved from handicraft production
• Grouping the same kinds of machines in one department
Process Layout – Key Principles
• Minimum distance between departments
• Departments in a sequence of operations
• Convenience for inspection and supervision
Process Layout: Advantages and Disadvantages
Advantages
Flexibility
Cost
System Protection
Economies of Scale
Incentives for Workers
Disadvantages
Utilisation
Excess material handling
Difficulties in operations control
Is this layout meant for bulk orders or small orders?
Product Layout: Example
Making a boat …?
How was it made…?
What were it’s input…?
Could be taught…?
Could it be replicated …?
Product Layout
• Also known as straight- line layout
• Sequence of workstations interconnected in one line
• Work done in small amounts
Product Layout – Key Principles
• Specific volume to be manufactured/serviced
• Stable product demand
• Product Standardisation
• Continuous material supply
Product Layout: Advantages and Disadvantages
Advantages
Simplicity
Small Space
Optimum cost of materials
Time efficiency
Limited skill sets
Disadvantages
Dull and repetitive
Product variety is limited
Fault in one can affect all
Is this layout cost-effective? High capital
investments
Inelastic capacities
Fixed Position Layout: Example
• Paper boat versus the real one?
• Operations in hospitals?
• Manufacturing a plane
Fixed Position Layout: Example (Contd…)
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
Fixed Position Layout: Advantages and Disadvantages
Advantages
Easy for immobile products
Flexibility
Possibly cost-effective
Feasible for large projects
Disadvantages
High capital investments
Large storage spaces
Careful planning
Can such layouts be discouraged completely?
Cellular Layout: Example 1
Source: http://www.teiminc.com/product_flow.htm
Cellular Layout: Example 2
Source: http://www.thefullwiki.org/Cellular_manufacturing
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
Cellular Layout: Advantages and Disadvantages
Advantages
Flexibility
Small batches of production
Higher machine utilisation
Workers’ empowerment
Disadvantages
Requirement of skills
Possibility of imbalances
Disadvantages of process and
product layouts
What kind of businesses will require cellular layouts?
Low cost of production
Combination Layout
• Hybrid Layout
• Mixture of three main layouts
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