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Theory of Constraints, Critical Chain Project Management, Lean : industry consulting & training - Marris Consulting
Critical Chain 2025 conference
How to obtain short task duration estimates
Critical Chain 2025, a conference by TOCICO
This international online conference is dedicated to Critical Chain Project Management and is organized by TOCICO (Theory Of Constraints International Certification Organization) on 2nd and 3rd of April 2025. There are over 20 presentations delivered by world experts and users. Each session concludes wuth a questions and answer session. It is the annual highlight of the Critical Chain Project Management communtity.
Join the event to learn the method that thousands of organizations use to manage their projects:
- To finish on time… in less time
- Within budget… at lower cost
- Without compromising on quality or scope, and without adding people.
Dates & Information
Date: on 2nd and 3rd of April 2025,
Online conference, in English.
Participation to live event is free + Paid access to replays
Presentation by Philip Marris: How to obtain short task duration estimates
The Critical Chain Project Management (CCPM) approach requires defining short, focused durations for individual tasks. How do you do this if you are just beginning your CCPM journey?
If you are not careful there will be an up front rejection of the Critical Chain approach. After all, it is true, but misleading, to say that CCPM enables you to do you projects in half the time…and that it does this by using task durations that are about half of what they used to be!
Those tempted by Critical Chain or those starting their CCPM journey legitimately worry about how they can obtain these short task durations from their colleagues. Philip Marris explains how you can get your organization to propose very short task durations and how these proposed “focused durations” will be volunteered by the project actors themselves, thereby ensuring good buy-in to the Critical Chain approach.
He also explain why it is not necessary for these new task duration estimates to be correct, only that they must be shorter than they used to be, and how the task durations can then be further shortened year after year.
It is quite easy to get your teams to propose task durations that are much shorter than they used to be. This presentation explains how.
About Philip Marris
Philip started his Theory Of Constraints journey in 1986 when he joined Creative Output and worked with Eliyahu Goldratt, the founder of TOC and author of the worldwide bestseller “The Goal”. In 1994 he wrote a bestselling TOC textbook in French that explains how to implement TOC in manufacturing.
He is also a recognized Lean expert and combines Lean (Manufacturing/Engineering/Management) with TOC. He founded Marris Consulting based in Paris, France, in 2005.
Half of Marris Consultig's business is outside of France in Europe and the rest of the world. He is bilingual and bi-cultural French/English. He is very active in the TOC community. He has implemented TOC over 300 times in over 30 countries. His clients include: Air France, ArcelorMittal, Ariane Group (Ariane rockets), Embraer, French Air and Space Force, BAE Systems, Equans, GSK, Horstmann, IamGold, McDonald's, Louis Vuitton, Osram, PPG, Procter & Gamble, Rolex, Safran, Salzgitter-Mannesmann, Siemens, SKF, SNCF (French railways), TDK, Thales, Valeo, Veolia, and Zodiac Aerospace.
To know more about Critical Chain
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.