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Muri - short version

Muri is a japanese word describing overburden of people or machines.

Muri - long version

Muri is a Japanese term for overburden, unreasonableness or absurdity, which has become popularized in the West by its use as a key concept in the Toyota Production System. Muri is one of three types of waste (Muda, Mura, Muri) identified in the Toyota Production System. Waste reduction is an effective way to increase profitability.

Muri can be avoided through standardized work. To achieve this a standard condition or output must be defined to assure effective judgment of quality. Then every process and function must be reduced to its simplest elements for examination and later recombination. The process must then be standardized to achieve the standard condition. This is done by taking simple work elements and combining them, one-by-one into standardized work sequences. In manufacturing, this includes:

* Work Flow, or logical directions to be taken,

* Repeatable Process Steps and Machine Processes, or Rational methods to get there, and

* Takt time, or reasonable lengths of time and endurance allowed for a process.

When everyone knows the standard condition, and the standardized work sequences, the results observed include

* Heightened employee morale (due to close examination of ergonomics and safety),

* higher quality,

* improved productivity, and

* reduced costs.


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