How do you use the SIPOC model to define your problem?

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If you are a Lean Six Sigma practitioner, you know how important it is to define your problem clearly and accurately before you start implementing solutions. One of the tools that can help you do that is the SIPOC model, which stands for Suppliers, Inputs, Processes, Outputs, and Customers. In this article, you will learn how to use the SIPOC model to define your problem and identify its root causes.

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Mostafa Hisham

Production Section Head at Giza Seeds & Herbs

1 What is the SIPOC model?

The SIPOC model is a high-level map of a process that shows the relationships between its key elements. It helps you to visualize the scope, boundaries, inputs, outputs, and stakeholders of a process. It also helps you to communicate the process to others and to identify potential sources of variation and waste. The SIPOC model is usually created as a table or a diagram with five columns, one for each element.

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2 How to create a SIPOC model?

Creating a SIPOC model requires several steps. Start by identifying the main steps or activities that make up the process and writing them in the third column. Utilize simple and clear verbs, and consider using a flowchart or process map to assist you. Then, identify the outputs for each step or activity and write them in the fourth column. Outputs can be tangible or intangible, such as products, services, information, or decisions. After that, identify the customers who receive or use each output and write them in the fifth column. Customers can be internal or external, such as departments, teams, individuals, or organizations. Then identify the inputs for each step or activity and write them in the second column; inputs can be materials, resources, data, or instructions. Finally, identify the suppliers who provide or supply each input and write them in the first column. Suppliers can also be internal or external, such as vendors, partners, or systems.

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3 How to use the SIPOC model to define your problem?

Creating a SIPOC model is the first step to defining your problem and its root causes. It is important to review the model for accuracy and completeness, and validate it with other stakeholders or experts. Identifying the output or outputs that are not meeting expectations is a symptom of your problem. Tracing back the outputs to the inputs that are causing or contributing to it reveals potential root causes. Analyzing the inputs and their suppliers can help you identify sources of variation or waste that are influencing your problem and how to eliminate or reduce it.

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David M.

Lead Product Manager @ Money Group | Revolutionizing the way brands and consumers connect
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As an Industrial Engineer turned Product Manager, I use SIPOC (Suppliers, Inputs, Process, Outputs, Customers) to streamline product development. I start by identifying Suppliers (e.g., developers, stakeholders) and their Inputs (e.g., requirements, resources). I outline the Process, detailing steps from concept to launch. I then define the Outputs (e.g., finished product, metrics) and Customers (end-users, stakeholders). SIPOC helps to visualize and refine the product creation flow, pinpointing areas for improvement and fostering clear communication between teams. It translates engineering problem-solving skills into efficient product management.

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4 How to benefit from the SIPOC model?

The SIPOC model is a powerful tool that can help you to define your problem and its root causes in a structured and systematic way. This model can give you a comprehensive understanding of your process and its elements, allowing you to communicate and align your process with stakeholders and customers. It can also help you identify and prioritize areas of improvement and opportunity, generate ideas and solutions for your problem, as well as monitor and measure your process performance. The SIPOC model should be used in conjunction with other Lean Six Sigma tools such as Voice of the Customer, Critical to Quality, Pareto Chart, Fishbone Diagram, 5 Whys, and Root Cause Analysis.

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5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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Mostafa Hisham

Production Section Head at Giza Seeds & Herbs
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SIPOC is the first thing to know where is the root causes of the problems, and boundaries of the improvement project and who should be involved in the team. Also there are a lot of quick wins lead to improve processes

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How do you use the SIPOC model to define your problem?

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1 What is the SIPOC model?

2 How to create a SIPOC model?

3 How to use the SIPOC model to define your problem?

4 How to benefit from the SIPOC model?

5 Here’s what else to consider

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