V Sasics

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V Sasics

  1. 1. VALUE STREAM MAPPING BASICS The Lean Enterprise Institute Brookline, Massachusetts, USA
  2. 2. 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
  3. 3. Why Value Stream Mapping is an Essential Tool <ul><li>Helps you to visualize the big picture, not just individual processes to improve the whole, not just optimizing the parts. </li></ul><ul><li>Helps you to see the sources of waste in your value stream </li></ul><ul><li>It forms the basis of a Lean Implementation Plan. </li></ul><ul><li>It shows the linkage between the information flow and the material flow. </li></ul>
  4. 4. Initial Value Stream Mapping Steps Product Family Current-State Drawing Future-State Drawing Work Plan & Implementation
  5. 5. Value Stream Improvement & Process Improvement <ul><li>Follow the product from beginning to end </li></ul><ul><li>Draw visual representation of every process in the materials and information flows </li></ul>
  6. 8. Information for a process data box <ul><li>“ The Big Four”: </li></ul><ul><li>Number of product variations </li></ul><ul><li>Cycle time (from 1 piece to the next) </li></ul><ul><li>Changeover time </li></ul><ul><li>Process Reliability </li></ul><ul><li>Number of operators </li></ul><ul><li>Scrap Rate </li></ul><ul><li>Production batch size </li></ul><ul><li>Working Time (minus breaks) </li></ul><ul><li>Pack Size </li></ul>
  7. 9. Example of Current State Map Total lead time

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