Critical Chain Project Management, an innovative method to successfully finish its project, on time, within budget and conform to customer's specifications.

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Overview of Critical Chain


Most of the projects traditionally managed with the Critical Path Method (CPM) or the Program Evaluation and Review Technique (PERT) suffer from time and budget overruns of 50 to 200% and often original specifications have to be abandoned.

Critical Chain Project Management (CCPM) has shown for more than 10 years, that performances can be significantly improved applying this new approach.

The Critical Chain is defined by the longest chain of dependencies between tasks, taking into account critical resources conflicts. The management must focus on the Critical Chain. Critical Chain is different from traditional critical path:

  • We use a new way to estimate tasks durations, which enables a 50% reduction in tasks durations,

  • The project is protected from uncertainty thanks to a project buffer which is compensated for by the reduction of individual safety margins on each task,

  • Feeding buffers are inserted to protect the Critical Chain from delays on non-critical tasks,

  • The project, or projects in multi-projects environments, are managed by the emblematic “Fever Chart” allowing management to be more proactive and reactive, 

  • We prevent resources on the Critical Chain from multitasking,

  • We minimize the "Student syndrome" (to postpone until the last moment working on a task) by valuing tasks finished early, 

  • We often use mascots to identify for resources working on the Critical Chain and in this way, we reinforce relay race behavior on the critical sequence of tasks.

Critical Chain Project Management (CCPM) allows projects to be finished on time, within budget and without compromises on the original specifications. Moreover, we notice an extraordinary increase in project performance, an increase in resource productivity and a healthier and more serene working environment.  

Dowload the full point of view by Philip Marris :  


Dedicated Website

Critical Chain


Documents to download

List of worldwide CCPM implementation references

(Fr) Chaîne Critique : un levier pour réussir ses projets

(Fr) Critical Chain Book Summary

Marris Consulting, experts in Critical Chain Project Management (CCPM)


Marris Consulting is an expert company in the implementation of Critical Chain Project Management (CCPM). We offer both project management consulting & CCPM training sessions. With a unique knowledge and a recognized experience, our industry consultants guide you through the Critical Chain method, for a significant improvement in the performance of your projects. 

Critical Chain Project Management is a proven approach to successfully completing projects on time, without budget overruns and without compromising the original specifications. However, for optimal results, CCPM must be properly implemented and project models properly constructed. Most of the time, companies do not have the necessary resources and tools to properly exploit the Critical Chain method in Project Management. Thanks to cutting-edge know-how acquired over many years of experience, our operational excellence consultants will provide you with the shortest and most optimized path to a complete rollout of the Critical Chain approach. With Marris Consulting's Critical Chain Project Management consulting and training services, you will witness a real transformation in your project productivity and timelines.

For more information about our CCPM consulting and training services, please do not hesitate to contact our experts.

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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 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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