100% Inspection

Lean emphasizes “zero defects” by preventing errors or problems from becoming defects in the product. The term “100% inspection” in Lean refers to more than having an operator conduct an inspection after each operation. Implementing 100% inspection means deploying preventive and detective devices and techniques to achieve the same results as 100% inspection, that is 100% effective. The objective is to strive for a state where errors are either prevented from occurring in the first place or are prevented from becoming defects that continue through the production process.

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