Evidence
How the parts waiting at welding came down day by 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 10, 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 |
| Sep 10 | End of day shift | 1,500 | Half a day |
Only a short row of carts left waiting at welding
On the evening shift, a short row of carts of parts is left beside the welding machines. On Sep 8 carts lined up beside the second machine, and this short row fits the ERP count of about 1,500.
Ultrasonic welding, Sep 10, 5:45 pm, Camera 10