In Kaizen and Lean, people often use acronyms like DOWNTIME or TIMWOOD (amongst others) to remember the various forms of waste.
We can reengineer the list to recall the items, but also to structure and understand them.
- Defects which result in discarded items and rework
Three AMOUNT wastes:
- Inventory of raw materials, components, work in progress and finished products
- Over production of too much product before it's needed
- Excessive processing including components or products that are higher quality than required, or processes that are poorly designed and require too much work
Three MOVEMENT wastes:
- Motion within processes, which cause equipment wear, worker strain or fatigue, inefficiencies
- Transport between processes, like time spent on conveyor belts or trucks
- Waiting, like time spent in stacks or in-trays
- Wasted talent. Since employee input into kaizen is essential, this 8th waste probably earns its place in the list.