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What is Lean?
A 'lean' process is one which
is focused on generating value for its customer. The flow of value through
the process is defined and tracked while waste in all its forms is removed.
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Value
Value-added activity
An activity that transforms or
shapes material or information to meet
customer value requirement |
Waste
Non value-added activity
Those activities that take time or
resources, but do not add to customer value. There are seven
types of waste |
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The Seven Types of Waste |
Type of
Waste |
Description |
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Over Production |
Product made
for no specific customer |
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Waiting |
Product waiting
to be processed |
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Transport |
Moving the
product to several locations |
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Inventory |
Storing product
costs money |
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Over processing |
When a process
step does not add value |
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Motion |
The excessive
movement of people |
|
Defects |
Errors during
the process |
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What is Six Sigma?
A six sigma process is one
which generates only three defects per million parts produced by the
process. It measures, reduces and tracks variation ensuring the processes
operate as intended. Its principles can be used both within manufacturing
and service environments.
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Defects
DPMO
Three defects per million
opportunities (DPMO) is equivalent to 99.9997% of product
being within specification |
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Variation
Standard deviation
A DPMO of three is equivalent to six sigma
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How Lean and Six Sigma Fit Together
(LSS)
Of the many ways that lean six
sigma could be explained, the following three definitions are typical:
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Lean and Six Sigma (1) |
Lean and Six Sigma (2) |
A Lean Six Sigma Process |
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Why LSS?
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MIME Solutions Ltd. 2007 all rights reserved |
