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How Does Lean Six Sigma (DMAIC) Reduce Waste? 

 August 22, 2023

By  Dave Litten

How Does Lean Six Sigma (DMAIC) Reduce Waste?

Waste reduction stands at the heart of any successful business strategy.

Organizations constantly seek ways to trim inefficiencies and enhance value. Enter Lean Six Sigma’s DMAIC, a structured approach promising not just to identify but also to eliminate waste in every process.

So, how does this methodology do it? Dive in and discover the magic of DMAIC.

The Essence of Lean Six Sigma and DMAIC

Lean Six Sigma marries two powerful methodologies. Lean focuses on waste elimination, while Six Sigma targets process variability reduction. Together, they form a robust approach to streamline operations and uplift quality.

DMAIC (Define, Measure, Analyze, Improve, Control) serves as its backbone—a systematic framework driving all enhancements.

Define – Laying the Foundation for Waste Detection

Every quest begins with clarity. What problem needs resolution? Which process requires scrutiny? In this phase, teams align on the problem statement, goals, and customer requirements.

A clear definition ensures focus, avoiding any sidetracking or wasted resources in later stages.

Measure – Identifying the Magnitude of Waste

Once the team defines the problem, the Measure phase quantifies it. This stage involves data collection to understand the current process performance. By measuring and documenting, teams can pinpoint areas of waste and inefficiency.

Think of this phase as a diagnostic tool that highlights pain points in a process.

Analyze – Zeroing In On Waste Root Causes

Here lies the investigative phase. Using the data gathered, teams dissect processes to uncover the root causes of inefficiencies.

Tools like Fishbone diagrams, 5 Whys, and FMEA (Failure Mode and Effect Analysis) help identify the factors contributing to waste. This stage ensures that interventions in the next phase address the actual causes, not just the symptoms.

Improve – Driving Down Waste by Implementing Effective Solutions

With a clear grasp of root causes, teams brainstorm and implement solutions that reduce or eliminate waste. From reengineering processes to altering workflows, various strategies come into play.

Each change undergoes rigorous testing, ensuring its validity. Only the most effective, waste-cutting solutions make the cut.

Control – Ensuring Lasting Waste Reduction

Efforts will fall flat without long-term oversight. The Control phase establishes mechanisms to monitor the improved process continuously. Teams develop control plans, set up dashboards, and conduct periodic reviews.

These steps ensure waste doesn’t creep back in and improvements remain sustainable.

Waste in Lean Six Sigma – The Seven Culprits

Lean Six Sigma categorizes waste into seven types, often remembered by the acronym DOWNTIME:

Defects: Errors that need rectification.
Overproduction: Producing more than the demand.
Waiting: Delays and idle time in processes.
Non-utilized talent: Not using team skills to the fullest.
Transportation: Unnecessary movement of materials.
Inventory: Excess materials or products stored.
Motion: Unneeded movements by employees.
Extra processing: More work than necessary.

DMAIC targets these wastes at every stage, ensuring processes remain lean and efficient.

The Tangible Impact of DMAIC on Waste

Success stories abound when discussing DMAIC’s impact on waste. From manufacturing floors to service industries, organizations witness significant waste reduction, translating to cost savings and higher customer satisfaction.

By constantly reevaluating and refining processes, businesses maintain a competitive edge.

In Conclusion – Lean, Mean, DMAIC Machines

So, how does DMAIC reduce waste? Through meticulous examination, targeted interventions, and consistent oversight. This Lean Six Sigma framework stands as a testament to what structured problem solving can achieve.

Any organization striving for excellence will find in DMAIC a reliable ally against waste. Remember, a lean organization isn’t just about cutting costs—it’s about creating value at every step.

Lean Six Sigma Masterclass – Everything you ever wanted to know about DMAIC

4.3

Boosting the core fundamentals of L6S 

  • DMAIC
  • Lean Principles
  • Six Sigma Process
  • Kanban
  • Just In Time (JIT)
  • Heijunka Leveling, Sequencing and Standardizing
  • Takt Time
  • … and much much more

Lean Six Sigma takes the features of Lean ( speed), and combines them with Six Sigma (stability and accuracy). This Lean Six Sigma Green Belt Masters Series will teach you how to streamline processes, improve business performance and supercharge your career

Dave Litten


Dave spent 25+ years as a senior project manager for UK and USA multinationals and has deep experience in project management. He now develops a wide range of Project Management Masterclasses, under the Projex Academy brand name. In addition, David runs project management training seminars across the world, and is a prolific writer on the many topics of project management.

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