Site acceptance testing is often treated as a commissioning checkbox. Quality auditors treat it as proof that automation behaves as specified under normal and fault conditions. Thin SAT packs—screenshots without context—fail reviews and force expensive re-walks.
Records that survive audit
- Traceable test case ID linked to functional spec paragraph.
- Actual result, witness initials, date, and software version hash.
- Deviation log with disposition, not silent waivers in email.
- Operator repeat steps for critical alarms and interlocks.
Aligning with ISO-style quality systems
Document control means SAT templates are versioned. Training means operators who signed SAT can demonstrate the same steps months later. We write SAT procedures with quality reviewers in the room early, not after build is frozen.
Summary
SAT is the bridge between engineering intent and regulated production. Invest in the record at sign-off; rebuilding evidence after an incident is slower and more visible.