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The Lean Six Sigma Black Belt Handbook by H. James Harrington, Rich Charron, Chuck Mignosa, Frank Voehl

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3

Waste Identification

There is nothing so useless as doing efficiently that which should not be done at all.

Peter F. Drucker

 

 

IN A NUTSHELL

Waste is generally composed of unnecessary activities that can be described either qualitatively or quantitatively. In its most basic form, LSS encompasses both these descriptors. Waste identification is also called learning to see muda, which is a traditional Japanese term for an activity that is wasteful and doesn’t add value or is unproductive, value-none, trivial, or unuseful.* It is also one of three key concepts in the Toyota Production System (TPS). The other two are mura, which means irregularity, unevenness, or variability, and muri, which refers to overburden or strenuous work. ...

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