15 Examples of Theory of Constraints + Lean

Case studies of Theory Of Constraints and Lean implementations


For 15 years Marris Consulting has been implementing Theory of Constraints, Lean, Six Sigma and common sense to improve performance.

Philip Marris, founder and CEO of Marris Consulting, shares 15 cases - among more than 250 in his career - of performance improvement in companies from various industrial sector.

Below is a shortened version of this conference, as well as the full version and the question-and-answer session.



To enhance your experience, Marris Consulting organizes training sessions on Theory Of Constraints applied to production and projects environments

00:00 Introduction
00:48 Manufacturer of aeronautical equipment
06:01 Manufacturer of gearboxes for Oil & Gas
10:40 Bearing manufacturer
12:40 Fast food
16:32 Aircraft maintenance
18:45 Pharmaceutical production
21:28 Manufacturer of aeronautical equipment
23:44 Luxury goods
26:17 Manufacturer of rocket tanks
28:44 Reimplementation of shopfloor
31:18 TGV maintenance
33:24 Manufacturer of European satellites
34:56 Manufacturer of medical diagnostic devices
36:15 Automotive supplier
39:48 Gold Mine

Learn more about the Theory of Constraints:

Marris Consulting, expert in Theory of Constraints & Critical Chain Project Management


Marris Consulting is an expert in the Theory of Constraints (ToC) and Critical Chain Project Management (CCPM). As industry consultants, we are focused on helping process and manufacturing industries reach their highest levels of performance by using Constraints Management  combined with Lean and Six Sigma. We also use Critical Chain Project Management which we sometimes combine with Lean engineering to improve project performance. If you are unsure about the actions which need to be implemented to improve operational efficiency, our industrial management consultants can also conduct a performance audit. Furthermore, our experts host numerous Theory of Constraints (ToC), lean and project management training sessions throughout the year.

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About Marris Consulting

Marris Consulting is an industry consulting and training company specialized in the Theory of Constraints (ToC) and Critical Chain Project Management. We focus on improving the performance of manufacturing and process industries by using Constraints Management combined with Lean and Six Sigma. To boost project performance, we also use Critical Chain Project Management (CCPM), which we sometimes combine with Lean Engineering. Our 2-day performance audits, our performance consulting services and our project management, Lean, ToC & CCPM training by our industry consultants offer a wide range of solutions to help our clients around the world reach the highest possible levels of performance.

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