Production flow · The WIP limit · Element
The current WIP
How much work is actually in the system.
The part
What it is
Measured rather than estimated, and including work that is technically started but sitting untouched.
The comparison between actual WIP and the limit is what makes the limit operational.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.
Implied lead time
WIP divided by throughput, which is the lead time this implies.
Duration shared type