SIPOC Mapping (What, Why and How)

  When it comes to understanding a process, few tools are as powerful as the SIPOC map.  The SIPOC can be used in both process mapping and value stream mapping.  When used as part of a value stream initiative the map shows material and information flow in forward and backwards loops, this allows teams to identify potential gaps from a systemic view which helps us understand the effects of activities both upstream and downstream. Today we will look at the SIPOC map from a process mapping perspective.  

What does SIPOC mean?

  The tools name SIPOC is rather catchy.  Each of the letters provide us with insight as to portions of a process we should review when mapping from a high level.  

• Suppliers
• Inputs
• Process
• Outputs
• Customers

  When using a SIPOC map keep in mind that the suppliers provide the inputs to the process.  The process which is what you are trying to improve should in some way provide value or transformation to the inputs which results in an output that needs to at minimum meet your customer's expectations.

  Ultimately we can conclude that any business process  can be broken down into either inputs, processes or outputs.  These are the middle portions of our sipoc diagram.  When we list out these core components we then can understand and identify all relevant aspects of the process.

When do we use a SIPOC Map?

  The SIPOC diagram is most often used to identify opportunities for improvements before a project begins.  Because the tool shows us all relevant aspects of a process it can also be useful when a team needs to:

• Identify who the suppliers (internal or external) of inputs are.
• Clarify the scope or boundaries of a process.
• Understand requirements that are needed by customers.
• View the process/system from a high level.

What does a SIPOC Map look like?

How do I use a SIPOC Map?

  One of the added benefits of a SIPOC diagram is how easy they are to create.  Follow these simple steps and you will be able to create a SIPOC map:

1.  Find an area as close to the process you are mapping as possible so that you can see the process happening and engage with people at the gemba.

2.  Start by mapping the process out.  You should map no less than 4 steps and no more than 7 high level steps.

3.  Next identify the process outputs.

4.  Now identify customers (internal/external) that will receive the outputs.

5.  After you have identified customers, document the inputs of the process.  These are the X's that are transformed into outputs or Y's by the process.

6.  Lastly Identify any suppliers of the inputs.

7.  If at all possible identify requirements that might be known already.  If you are following the DMAIC method these CTQ's will be verified in the measure phase.

Example:

  After using a SIPOC map we can now see all the elements of the process clearly.

  1. There was an inquiry for a bike repair which resulted in a scheduled appointment date and time.
  2. Next the owner came with his bicycle ready for a diagnosis which resulted in a recommendation and an estimate to the bike owner.
  3.  The bike rep. then received permission for the order and prepared his purchase order for the bike mechanic.
  4.  The parts were then ordered by the manager which was the internal approval for the bike rep.
  5.  The vendor then delivered the parts which was the approval for the bike mechanic to perform the repairs and ultimately resulted in the customer being called.
  6.  Then through observation the bike was repaired.

  If you would like to download a free SIPOC template simply click on the link below.

Download your free template here!