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T H E I N F O R M A T I O N A G E S T A R T S H E R E ™T H E I N F O R M A T I O N A G E S T A R T S H E R E ™

9/1/99

VALUE STREAM MAPPING

BASICS

The Lean Enterprise InstituteThe Lean Enterprise Institute

Brookline, Massachusetts, USABrookline, Massachusetts, USA

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T H E I N F O R M A T I O N A G E S T A R T S H E R E ™T H E I N F O R M A T I O N A G E S T A R T S H E R E ™

DEFINITION

Value Stream is all the actions (both value added and non value

added) currently required to bring a product through the main flows

essential to every product

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T H E I N F O R M A T I O N A G E S T A R T S H E R E ™T H E I N F O R M A T I O N A G E S T A R T S H E R E ™

Why Value Stream Mapping is an Essential Tool

Helps you to visualize the big picture, not just individual processes to improve the whole, not just optimizing the parts. Helps you to see the sources of waste in your value stream It forms the basis of a Lean Implementation Plan. It shows the linkage between the information flow and the material flow.

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Initial Value Stream Mapping Steps

Product Family

Current-State Drawing

Future-State Drawing

Work Plan & Implementation

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Value Stream Improvement & Process Improvement

Follow the product from beginning to end Draw visual representation of every process in the materials and

information flows

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Information for a process data box“The Big Four”: Number of product variations Cycle time (from 1 piece to the next) Changeover time Process Reliability Number of operators Scrap Rate Production batch size Working Time (minus breaks) Pack Size

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Example of Current State Map

Total lead timeTotal lead time