Value Stream Mapping Tool
The definitive multimedia guide
Value stream mapping is a lean management principle.
It is used to analyze and design the flow of materials and information required to bring a product or service to a consumer.
This map has to be considered the blueprint of "the best in class manufacturing" you want to build.
It is important, prior to startimg with VSM, to define the Products Family.
There is a quite standard method to draw a value stream map and there is a rigorous path to follow to be efficient in doing it.
The value stream map is a useful tool because:
- You can see the flow
- You can speak a unique language worldwide (easy to understand)
- You can address the resources to the critical step of the flow
- You can see both the material flow and information flow
- You can bring the map on the shopfloor and everybody can modify it
In this video, Jim Womack will explain something interesting...
If you looked at the video now it should be clear that:
There is no point to do a Value Stream Map without a WHY!
when the purpose is set and shared among leadership is time to map.
An (almost) standardized way is used.
Here you will find the tips to be effective and efficient during the mapping.
The list of materials you need prior to starting.
Please collect it before the event otherwise you
will be there looking each other and wasting time.
Common Pitfall to avoid in VSM
In this paragraph, I would like to show you how many minutes I wasted
because the consultant did not explain me correctly how to do a Value Stream Map.
I will treat in points with an explanation.
Each point is a Pitfall.
How many types of Value Stream Map exist?
you have to focus on the problem and then decide what you have to map.
Please never never never forget why you map.
Generally, you can have 3 level of mapping:
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The Value Stream Map of Deming:
Here what Deming defined as general flow in an industry.
Simple and Great.
To the make the flow diagram work, the flow of material and information from any part of the system must match the input requirements of the next stages. Thus, the aim in the flow diagram is for the material to come in at the front, and to emerge at the end as usable product or service. The flow diagram describes not only the flow of material, but also the flow of information needed to manage the system.
Source – “The New Economics For Industry, Government, Education” by Dr. Deming.
VSM - Another Point of view.
Lean is a journey that never ends.Chuck Intrieri
Senior Principal Lean Consultant
Value Stream Mapping or, VSM,
is one of the most important concepts of Lean Manufacturing.
Lean helps businesses identify the waste(s)
identifying opportunities for continuous improvement,
making plans to improve the flow of processes
by eliminating waste and reducing the total lead time
to improve throughput to the customer.
So, what is VSM?
It is mapping all activities or process steps involved in both
and analyzing all steps and identifying the wastes associated with each step.
At the bottom of the VSM,
a value adding analysis is done to calculate the % of value added activities.
It will be surprising to see that
most businesses will have a value add % of below 5 %.
there are some exceptions to this rule,
depending on your particular industry.
The challenge is to eliminate or minimize,
as much waste or non-value adding steps,
so that the % of value addition goes up
this is productivity improvement,
as the efforts which were wasted earlier will be used for adding value.
A Value Stream is defined as the set of all actions (both value added and non value added) required in bringing a specific product or service from raw material to the customer.
Senior Principal Lean Consultant
A Lean cross-functional team creates the best VSM.
There are 7 steps in Value Stream Management:
- Create VSM @ gemba, or at the production/work cell itself
- Choose a Value Stream you wish to improve
- Map the current VSM state
- Eliminate all roadblocks, and non value added activities
- Map the future VSM state
- Create a plan to improve the VSM
- Implement the plan
A value stream could be:
Simply a product
a family of products which go through
the same sequence of operations and the same resources.
Here my conclusions ...
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