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In manufacturing, andon (Japanese: アンドン or あんどん or 行灯) is a system which notifies managerial, maintenance, and other workers of a quality or process problem. The alert can be activated manually by a worker using a pullcord or button or may be activated automatically by the production equipment itself.
Mura is a Japanese word meaning "unevenness; irregularity; lack of uniformity; nonuniformity; inequality", [1] and is a key concept in the Toyota Production System (TPS) as one of the three types of waste (muda, mura, muri). [2]
Muri is a Japanese word meaning "unreasonableness; impossible; beyond one's power; too difficult; by force; perforce; forcibly; compulsorily; excessiveness; immoderation", [1] and is a key concept in the Toyota Production System (TPS) as one of the three types of waste (muda, mura, muri).
The other types are known by the Japanese terms mura ("unevenness") and muri ("overload"). [2] Waste in this context refers to the wasting of time or resources rather than wasteful by-products and should not be confused with waste reduction.
The term poka-yoke was applied by Shigeo Shingo in the 1960s to industrial processes designed to prevent human errors. [1] Shingo redesigned a process in which factory workers, while assembling a small switch, would often forget to insert the required spring under one of the switch buttons.
Production leveling, also known as production smoothing or – by its Japanese original term – heijunka (平準化), [1] is a technique for reducing the mura (unevenness) which in turn reduces muda (waste). It was vital to the development of production efficiency in the Toyota Production System and lean manufacturing. The goal is to produce ...
A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system used to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).
Masaaki Imai made the term famous in his book Kaizen: The Key to Japan's Competitive Success. [1] In the Toyota Way Fieldbook, Liker and Meier discuss the kaizen blitz and kaizen burst (or kaizen event) approaches to continuous improvement. A kaizen blitz, or rapid improvement, is a focused activity on a particular process or activity.