Separate work time from changeover
The synthetic bench is exclusive. Task A needs two hours, followed by a thirty-minute changeover before Task B, which needs ninety minutes. One operator can perform both. The workday begins at 09:00 and the supplied changeover cannot overlap Task A.
| Slot | Use | Bench state after |
|---|---|---|
| 09:00–11:00 | Task A | Needs changeover |
| 11:00–11:30 | Changeover | Ready for B |
| 11:30–13:00 | Task B | Both packages complete |
Give the next task a ready workspace
- Reserve exclusive bench
- Complete Task A
- Perform supplied changeover
- Start B at 11:30
If A overruns, move the changeover and B together; do not keep B’s start while dropping the required transition.
Both tasks finish at 13:00. The thirty-minute interval is occupied capacity even though it produces neither task’s output. Preserve it when planning another bench user.
A finishes at 11:20 instead. What is B’s revised finish?
Show the worked answer
13:20: changeover ends at 11:50, then B takes ninety minutes.