In the factory, materials necessary for production should be easily accessible at the production location and double or triple handling of materials should be avoided. In the office, workers who collaborate with each other often should be close together. Additionally, excessive movement of people and equipment can lead to unnecessary work, greater wear and tear, and exhaustion. Excessive movement of materials can lead to product damage and defects. Waste in transportation includes movement of people, tools, inventory, equipment, or products further than necessary. In the following section we will examine each of these wastes in detail. As a result, the 8 wastes are commonly referred to as ‘TIMWOODS’. The 8th waste of non-utilized talent or ‘Skills’ of workers was later introduced in the 1990s when the Toyota Production System was adopted in the Western world. They are often referred to by the acronym ‘TIMWOOD’. The seven wastes are Transportation, Inventory, Motion, Waiting, Overproduction, Overprocessing and Defects. The original seven wastes (Muda) was developed by Taiichi Ohno, the Chief Engineer at Toyota, as part of the Toyota Production System (TPS). In other words, waste is any process that the customer does not want to pay for. Waste is any action or step in a process that does not add value to the customer. Before diving into the 8 wastes, it is important to understand what waste is. Lean thinking aims to remove wastes from work processes.
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