En son güncellendiği tarih: 9 Kas 2020

There have always been questions about which belt program to choose in Lean 6 Sigma initiatives:

"Let's choose Black Belt since it has the higher ranking" or

"We started with the Green Belt Program where I used to work, let's do the same here" or

"We are having trouble allocating enough time for the Green Belt program. Is the Yellow Belt program enough to solve our problems?"

The History of Lean 6 Sigma Belts

For this reason, I would like to tell a brief history of generational logic:

In 1986, grandfather of the Six Sigma (then Lean was separate) late Dr. Mikel Harry was working on a circuit board project for Unisys. Plant Manager Cliff Ames, asked Dr. Harry to train his team to apply this method in further projects too.

Sitting late one night in the office, Ames and Dr. Harry, discussed about naming the people who attended this training. The interest of both in the Far Eastern martial arts led to the definition of the Black Belt. In the Far Eastern martial arts Black Belt shows the knowledge and experience of the practitioner.

A former Marine Corps, Dr. Harry introduced the ideas of other belts at ABB in 1993 by adopting the deployment approach in the military. Each belt had a different scope and depth.

What are the Belts in Lean 6 Sigma?

Yellow Belt

S/he is a team member for Green and Black Belt projects and is the team leader of her/his own project within the scope of those projects. They can solve 85% of the problems in businesses by using Problem Solving Tools and Basic Statistical tools. The training takes 2-4 days to learn these tools.

Green Belt

They are project leaders who solve problems using Problem Solving Tools and Advanced Statistical tools. The training takes 8-12 days to learn these tools.

Black Belt

They are full-time project leaders with full-time knowledge of Statistical tools (Design of Experiments, Advanced Regression Models, Reliability, etc.) as well as Green Belt tools capable of product and process development . Black Belts also undertake coaching and training activities for Green Belts. The training takes 20-25 days to learn these tools. A good Black Belt constantly updates her/his knowledge to meet the needs of the organization.

White Belt

They are people who know the purpose of Lean 6 Sigma and its basic problem solving tools.

Master Black Belt

Full-time Black Belts that provide the necessary coordination for the deployment of Lean 6 Sigma within the organization.

Which Lean 6 Sigma Belt Program Is Suitable For Our Business?

  • The Yellow Belt Program will be ideal if the problems in your business are mostly caused by loss of efficiency or basic quality problems. For example; Your setup times are too long, your quality problems arise from one or more basic reasons.

  • If the problems in your business consist of complex quality problems, the Green Belt Program will be ideal. For example; In setup improvements, manual fine tunings done by the operator need to be explained by a mathematical model, quality problems require several different reasons to be explained with a mathematical model.

  • If the problems in your business consist of new process and product design needs, the Black Belt Program will be ideal. For example; determining the dyeing parameters of the newly designed fabric, optimizing the energy efficiency of the newly installed machine in a way that does not affect the quality

  • If you have started the above programs in your company, you can start the White Belt Program for your employees.

  • If you have already started Green or Black Belt Programs in your business. You can propose Black Belts who have been acted as project leader and/or coach in different projects for at least 3 years to become Master Black Belts.

For your questions, I will be happy to answer them if you write them in the comments section.

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