Lean toolkit / 12
SMED Changeover Study
Every element of a changeover, split into what needs the machine stopped and what does not. Most of the first win is conversion, before anyone buys anything.
Video the whole changeover from last good part to next good part, then list every element in order. Internal means the machine must be stopped. External means it could be done while it still runs.
Judge the project on the internal line, not the total. Moving an element to external makes the number move without removing a single second of work — which is exactly the point.
Internal — before0sec machine stopped
Internal — after0sec machine stopped
Downtime cut—reduction in internal
Changeover—min, before → after
Where the time sits
Changeover elements
In the order they happen| # | Element — what the person actually does | Time (s) | Now | Target | Approach | New (s) | Saving | |
|---|---|---|---|---|---|---|---|---|
| Total effort | 0 | 0 | 0 | |||||
SMED Changeover Study · DF Consulting · df-consulting.net · david@df-consulting.net