The seven types of waste, which we identified last month (pg. 50), are: 1. Defects This is a product or service that contains errors, requires rework or does not function as designed. 2. Over-production of goods We create waste when we produce more than the customer needs or is needed at that time. 3. Transportation This is the waste of moving materials or goods. 4. Waiting When people, equipment or product wait for other processes or workers to finish an upstream activity, it is waste. 5. Over-processing This waste happens when there are unnecessary or extra steps in the process or if there are any steps that do not create value. 6. Motion Employees moving around do not add value. 7. Inventory Material or parts not currently being used by the customer is waste. In construction, this includes uncut sheet metal and pipe, work in process and finished fabrications.
展开▼
