Say:In this example the lead time for first
piece of with the batch process is 21 minutes. That 21 minutes is reduced to
just 3 minutes if the batch size is reduced from 10 to 1.You will also notice that the large batch
size results in lots of WIP.Look at
the piles of WIP between operations A, B, and C in the 10 piece batch
example.Does it remind you of our
Ask:Large batch size also impact quality. How?
It allows defects to pile up between
operations, without being discovered by the next process (internal
customer).By contrast in a small
batch operations, problems are likely to be discovered much more quickly.