Six Sigma Principles

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This article explains Six Sigma or Lean Six Sigma (LSS) in a practical way. After reading you will understand the basics of this powerful quality management method.

Background Six Sigma

The Six Sigma theory was originally developed by the American company Motorola in 1986.

Today, this quality management method is used in many business and industrial sectors.

It seeks to identify and remove the causes of errors as a result of which the quality of business processes can be improved.

Six Sigma consists of a collection of methods that improve the quality of processes. It is important to find employees within an organization with specific specializations and expertise in this field.

It reduces product and business variations with the objective to match products and/or services with customer expectations.

The Six Sigma theory projects have quantifiable financial objectives such as cost reduction and/or profit improvement.

What is Six Sigma?

The term “Six Sigma” refers to a process in which the production is 99.99966% defect free and it originated from terminology that is associated with the manufacturing industry.

Here, specific terms are associated with statistic modelling and manufacturing processes.

A “sigma rating” indicates the yield or percentage of defect-free products.

Motorola set a goal of six sigma for all of its manufacturing processes and this became the nickname for all the management and technical activities used to achieve this.

Six Sigma as quality framework

As soon as high demands are made on quality, Six Sigma comes into play.

But also when there is a relatively high loss in production or when there are problems and errors are reported.

It is proven quality management tool set and in particular for industry processes and the high tech sector.

However, it is also used as a general management method so that processes can be optimized.

Another well-known tool that is used to improve cyclical processes is the DMAIC process model.

Problem factors

Six Sigma is an excellent method to solve complex quality issues of which the cause of the problem is not immediately obvious.

It is important that the quality of the product and/or process in question is measurable or can be made measurable.

As a result, the factors that affect quality the most can be traced and identified and controlled.

Similarities

Six Sigma has much in common with Gemba Kaizen, the Japanese production improvement method and the Lean management method for waste reduction.

The objective of Kaizen Gemba is to eliminate waste within an organization and to standardize production.

Lean management also focuses on realizing a maximum value for the customer with as little waste as possible.

The main objective of all three methods is similar: to identify and prevent errors as a result of which the production process improves.

It’s Your Turn

What do you think? Is the Six Sigma applicable in today’s modern economy and operational management? Do you recognize the practical explanation or do you have more suggestions? What are your success factors for a good Six Sigma organization?

Share your experience and knowledge in the comments box below.

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More information

  1. Pyzdek, T., & Keller, P. A. (2003). The Six Sigma Handbook. McGraw-Hill.
  2. Tennant, G. (2001). Six Sigma : SPC and TQM in Manufacturing and Services. Routledge.
  3. Neuman, R. P. & Cavanagh, R. (2000). The Six Sigma Way : How GE, Motorola, and Other Top Companies are Honing Their Performance. McGraw Hill Professional.

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