$($ITAT$)$ Consider the following two production processes making an electronic component

for a navigation system. Both processes consist of $20$ stations and operate at a cycle time of

$1$ minute$/$unit$.$ Their most error prone operation is step $9.$

$8\mathrm{.}12$

Practice

Problems

Lean Operations and the Toyota Production System $167$

Process $1$: Has a final inspection at the end of the process and has about $300$ units of

inventory between step $9$ and the inspection.

Process $2$: Has each worker check the work of the previous steps and about $50$ units of

inventory between step $9$ and the end of the process, roughly equally distributed across the

remainder of the process.

What would be the information turnaround time for a defect made at station $9?[8\mathrm{.}4]$