Lean Six Sigma is a methodology that relies on a collaborative team effort to improve performance by systematically removing waste,[1] combining lean manufacturing/lean enterprise and Six Sigma to eliminate the eight kinds of waste (muda): Transportation, Inventory, Motion, Waiting, Over production, Over processing, Defects, and Skills (abbreviated as ‘TIMWOODS’).

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The Lean Six Sigma is a union of two distinguished plans of business management known as lean manufacturing. This article will clarify the process. While the Six Sigma Methodology attempts to identify the fault in the product improvement processes and strives to eliminate them, The Lean Manufacturing tries to make more value form the least necessary work by eliminating waste. So basically, Lean Six Sigma helps to accelerate the decision making procedure of an organization by eliminating inefficiencies in production procedure and improving the excellence of the product.

Lean is a method which focuses on improving the quantity of quality product from the least required work by removing the wastes. Lean mainly focus on eight waste items. The Lean Six Sigma plans to eliminate the difficulty of over production, in other words, producing more than what is insist and unnecessary courses that add unnecessary overhead to the association without adding any value to the product quality. Lean plan purports that there should not be any needless delays in the product improvement processes due to unavailability of resources, labor or necessary documents. However, a business must not stock more than optimum required record. One of the huge profit of Lean Six Sigma is that it increase the employee association in whole of the production development as employee teams are planned who work to improve the processes and better the product quality.

The Lean Six Sigma concepts were first published in a book titled Lean Six Sigma: Combining Six Sigma with Lean Speed by Michael George and Robert Lawrence Jr. in 2002. Lean Six Sigma utilizes the DMAIC phases similar to that of Six Sigma. Lean Six Sigma projects comprise aspects of Lean’s waste elimination and the Six Sigma focus on reducing defects, based on critical to quality (CTQ) characteristics.

The DMAIC toolkit of Lean Six Sigma comprises all the Lean and Six Sigma tools. The training for Lean Six Sigma is provided through the belt based training system similar to that of Six Sigma.


The belt personnel are designated as white belts, yellow belts, green belts, black belts and master black belts, similar to judo.

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For each of these belt levels skill sets are available that describe which of the overall Lean Six Sigma tools are expected to be part at a certain Belt level.

These skill sets provide a detailed description of the learning elements that a participant will have acquired after completing a training program. The level upon which these learning elements may be applied is also described. The skill sets reflects elements from Six Sigma, Lean and other process improvement methods like the theory of constraints (TOC) total productive maintenance (TPM).



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