Yamazumi Chart Explained
But what exactly is the Yamazumi chart and how does it help?
Discover more about Lean Six Sigma.
Everything you need to know about the statistical process control charts.
A Yamazumi chart usually includes different categories: value added, not value added, and waste. The duration of each task is also annotated and displayed in the same bar chart. What makes the Yamazumi chart a different visual tool is the fact that each task within the process is stacked up so that you can have a better perspective of the entire process.
What is Kaizen and Kaizen Blitz?
Most Yamazumi charts include the same first red bar named Takt Time. Others may simply include a dotted line representing the Takt Time. Simply put, the Takt Time is the limit of time that your processes should take. Ideally, you should never have any process with a bar higher than the takt time bar. After all, this would mean that you would be producing a lot of waste and that the process could be improved in terms of cost and efficiency.
Why Should Organizations Use The Yamazumi Chart?
Take a look at the lean six sigma belt roles and responsibilities.
- the operations that are overloaded (beyond the takt time)
- the operations that are underutilized
- the delays
- the wastage
- the blocks.