Facilitates modeling your process by providing a mechanism for defining all activities in the process, the relationships between inputs and outputs in the process, and key decision points. Because you can use the value stream map (VSM) to focus on cycle times and waste identification, it is a key tool in all Lean projects.
|When to Use||Purpose|
|Pre-project||Identify potential projects by isolating areas of the process that need improvement. Which areas have high waste, large cycle times, bottlenecks, or low throughput yield?|
|Start of project||Scope the project. Define the beginning and the end of the process segment that will be the focus of the project.|
|Mid-project||Identify steps in the actual process, along with their inputs, outputs, activities, constraints, %VA, %NVA, %BVA, cycle times, and yields.|
|Mid-project||Group brainstorming tool for setting aside inputs that have little influence on the output of interest.|
|Mid-project||Group brainstorming tool for simplifying and/or eliminating process steps.|
|End of project||Document changes in procedures in the improved process, update %VA, %NVA, %BVA, cycle times, and yields.|
No data requirements exist because you only use this tool to collect and organize data.