Six Sigma

Six Sigma is a management philosophy that attempts to improve customer satisfaction to near perfection.” – Making Six Sigma Last, George Eckes

Six Sigma Button


Lean Ireland consultants are experienced in six sigma programme development  and six sigma training, in a wide variety of sectors and regulated environments. We are experienced in facilitating blended lean six sigma training courses using a variety of accredited curricula, such as:
– ISO 13053 Quantitative methods in process improvement — Six Sigma (published in 2011)
– The American Society for Quality (ASQ), and
– The International Quality Federation (

Lean Ireland provides six sigma training courses at six sigma yellow belt, six sigma green belt and six sigma black belt certification levels. We also provide six sigma sponsor training.


Define, Measure, Analyse, Improve, Control


All six sigma projects that improve current processes are managed according to a five step Define, Measure, Analyse, Improve and Control cycle.

Design projects are managed on a variation of that cycle: Define, Measure, Analyse, Design and Validate







When an organisation implements six sigma, a shadow organisation is developed. This consists of six sigma trained personnel. Each has a distinct role to play in promoting, managing and sustaining the six sigma programme.




champion six sigma


The six sigma champion is a part time six sigma programme member who provides guidance and support to six sigma project leaders and team members. S/he is likely to be a member of the senior management team.



Black belt six sigma


The six sigma black belt is a full-time six sigma programme member who is expected to contribute between €250,000 and €1,000,000 to the company’s operating profit annually.



green belt six sigma


The six sigma green belt is a part-time six sigma programme member who is expected to contribute €20,000 – €50,000 to the company’s operating profit per project completed.



yellow belt six sigma


The  six sigma yellow belt is a part-time six sigma team member who is expected to participate in improvement project and events, using a limited number of six sigma problem solving tools.




“In our OpEx journey Lean Ireland are playing a key role in ensuring we continue to mature our programme and meet our organisational goals.
It is a pleasure to work with them and I have no hesitation in recommending them for process improvement training and project mentoring.”

Jason Flanagan, Site Operational Excellence Lead & Manufacturing Manager,
Allergan Pharmaceuticals, Clonshaugh, Dublin