A number of lean manufacturing tools and practices have long been used to reduce manufacturing waste. These include the five S's, visual controls, standardized work, mistake proofing, total productive maintenance, cellular manufacturing, single-digit setup, pull systems, sequencing, activity-based costing, and leveled production.
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employee to instantaneously know what is going on, understand any process, and see clearly what is being done correctly and what is out of place. Typical visual control mechanisms include warning signs, lockout tags, labels, and color-coded markings. One example is andon, an electronic board that provides visibility of floor status as well as information to help coordinate the efforts to linked work centers, through signal lights that are green (for running ), red (for stop ), and yellow (for needs