In a lean system, large inventories are not considered a type of waste, because they prevent operator wait times.

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In a lean system, large inventories are considered a type of waste because they tie up capital, take up valuable space, and can result in excess handling and potential obsolescence. The goal of a lean system is to minimize waste, including excess inventory, in order to increase efficiency and reduce costs. Instead of relying on large inventories to prevent operator wait times, lean systems focus on improving flow and reducing lead times to ensure that operators always have the materials and supplies they need when they need them.

In a Lean System, Large Inventories Are Not Considered a Type