Evidence
How the pile of parts waiting to be welded shrank each day
The ERP counts the sets of parts waiting to be welded and how many days of work that adds up to. The queue held at about 9,000 until the evening shift started welding, then fell by about 3,000 a day.
Ultrasonic welding, Sep 7 to Sep 9, ERP job log
| 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 evening shift | 6,000 | 2 days |
| Sep 9 | End of evening shift | 3,000 | 1 day |
The second welding machine back at work on a second evening
The second welding machine runs again on the evening shift, with parts fed in from the carts beside it. It ran a second evening, and at the end of that shift the count was about 3,000 lower than a day earlier.
Ultrasonic welding, Sep 9, 9:40 pm, Camera 10