Ultrasonic welding. Sep 7 to Sep 9. ERP order records.
How the pile of parts waiting to be welded shrank each day
What it shows: The ERP counts the sets of parts waiting to be welded and how many days of work that adds up to.
Why it proves the point: The queue held at about 9,000 until the night shift started welding, then fell by about 3,000 a day.
From the plant's ERPERP order records
| Date | Counted at | Sets of parts waiting | Days of work waiting |
|---|---|---|---|
| Sep 7 | Start of day shift | 9,000 | 3 days |
| Sep 8 | Start of day shift | 9,000 | 3 days |
| Sep 8 | End of night shift | 6,000 | 2 days |
| Sep 9 | End of night shift | 3,000 | 1 day |