TIMWOOD in Lean manufacturing refers to categories of waste. Which expansion is correct as described?

TIMWOOD in Lean manufacturing refers to categories of waste. Which expansion is correct as described?

• A. Transport- reduce transport time, delays and damage; Inventory- reduce raw and finished goods inventories; Movement- reduce any unnecessary worker movement; Over production- no stockpile of over produced parts; Over Processing- every investment must be justified; Defects- any defective products should be removed
• B. Transport, Inventory, Motion, Waiting, Overproduction, Overprocessing, Defects
• C. Transport, Inventory, Movement, Overproduction, Over Processing, Defects
• D. Transport, Inventory, Movement, Waiting, Overproduction, Overprocessing, Defects

Answer: (A)

The concept tested is the seven wastes identified in Lean manufacturing, known as TIMWOOD. The standard expansion lists Transport, Inventory, Motion, Waiting, Overproduction, Overprocessing, Defects, which is exactly what TIMWOOD stands for. This option is best because it uses the canonical terms (Motion rather than Movement, and includes Waiting), and describes Overprocessing in a way that reflects doing more work than the customer requires rather than a blanket rule about investment justification. The other option mislabels Movement as a stand-in for Motion, omits Waiting, and redefines Overprocessing in a way that isn’t aligned with how the wastes are described in Lean.

The concept tested is the seven wastes identified in Lean manufacturing, known as TIMWOOD. The standard expansion lists Transport, Inventory, Motion, Waiting, Overproduction, Overprocessing, Defects, which is exactly what TIMWOOD stands for. This option is best because it uses the canonical terms (Motion rather than Movement, and includes Waiting), and describes Overprocessing in a way that reflects doing more work than the customer requires rather than a blanket rule about investment justification. The other option mislabels Movement as a stand-in for Motion, omits Waiting, and redefines Overprocessing in a way that isn’t aligned with how the wastes are described in Lean.