A bad lot belongs in two records: the part history, which answers how one part’s lots have gone, and the supplier scorecard, which answers how the supplier does across everything it ships. Record the reject, the response and the proven fix so a clean quarter does not erase the lot.
Five clean lots later, the SCAR is closed. One job is left, and it is the one that gets skipped: writing it down where it will count. If lot 55102 only lives in the SCAR file, the next buyer to look at Dunmore will see a clean supplier.
Two records, two questions
The part history answers a question about one part: how have its lots gone? The supplier scorecard answers a question about one supplier: how are they doing across everything they ship? A bad lot belongs in both.
On the part history, lot 55102 is a reject, six of 32, with the SCAR number and the tightened inspection noted, followed by five accepted lots. On the scorecard, the same lot shows up as a reject and as a SCAR, and the supplier's response time is recorded honestly. Dunmore answered inside its 14 days, and the scorecard should say that too.
What each record should hold
- Part history: lot number, date, quantity, sample size, result, decision, and a note linking any reject to its SCAR.
- Scorecard: lots received and lots rejected for the period, SCARs issued, whether responses came on time, and the result of any audit.
Record the good news as well as the bad. A supplier who fixes a problem and holds it should see that in the record, and the next review should be able to show it.
Let the record decide the next move
The records are not filing. They decide how much you inspect, who gets the next purchase order, and when an audit is due. Going back to normal inspection happens because the part history shows five clean lots, not because the SCAR closed.
The mistake to avoid
Letting the scorecard quietly forgive. A clean quarter should not erase a bad lot. The record has to show the reject, the response and the proven fix, in that order, so that anyone who reads it sees the whole trail.
- Pick a supplier you haven't reviewed lately.
- Check that its last bad lot appears in both the part history and the scorecard.
- Add anything that's missing today.
Open the printable Monday Board
Related on ShopFloorOps
The supplier, the part, the lot and the people in this book (Dunmore Fastener Co., FB-8120, lot 55102) are a made-up example. The tool sidebars show ShopFloorOps tools, which I make and sell. Every chapter teaches the step itself, so you can use your own forms.