What a factory acceptance test should include
Factory acceptance uses your known-defect samples, at the contract speed, and records false rejects. A low-speed pass on the supplier’s own sample is not acceptance.
A factory acceptance test at least uses your known-defect samples, reports every numbered defect at the agreed speed, and records the false rejects. A pass on only the supplier’s own sample, at a low speed, is not acceptance. An item that fails is not left as a verbal promise to fix it on site later.
Why it is judged this way
Factory acceptance is the cheapest moment to change the software, before the system is shipped. Bring known-defect samples of the kind in 107 and tick them one by one. Copy out the threshold settings that passed, and check them again at the plant, so transport and installation do not change them.
What to compare
| What you see | What to call it | What not to do |
|---|---|---|
| Every known defect is reported at the contract speed | This item passes | Count a low-speed pass |
| There is a miss | Do not ship, or write it as unfinished | Receive it first and talk later |
| The thresholds are not backed up | They cannot be checked at the plant | Leave only a sentence that says passed |
At job change or when a roll is opened
- Bring the numbered defect samples.
- Run at the contract speed and tick the misses and the false rejects.
- Copy the settings from that run.
