Prepare a SAT package.
From the FAT-verified system to a site acceptance test, SAT package keyed to field installation
What this covers.
Preparing a site acceptance test, SAT package is the engineering process of restructuring the FAT-verified system documentation for verification against the as-installed condition on site. SAT is the second formal acceptance milestone. The system shipped from FAT must be re-verified after field installation, after cable termination, after loop check-out, and after the field-engineering punch-list closure. SAT failures most commonly stem from cable misterminations, JB labeling errors, and field-installed instruments that differ from the FAT-witnessed configuration. SAT-readiness drives the mechanical completion, MC declaration.
Inputs.
- FAT-verified system documentation
- As-installed cable schedule, field-verified
- As-installed JB schedule, field-verified
- Per-loop check sheets, FAT-witnessed
- Site punch list to date
Outputs.
- Per-loop SAT walk-down check sheet, sensor through final element with field-verified columns
- Per-system SAT punch list
- MC declaration cover sheet per system
- RFSU declaration cover sheet per system
- Closeout report ready for the owner-engineer sign-off
FAT vs. SAT scope distinction
| Aspect | FAT | SAT |
|---|---|---|
| Location | Vendor, integrator facility | Project site |
| Focus | Functional verification per spec | Field verification per as-installed |
| Cable terminations | Simulated at I/O | Field-verified at JB and termination strip |
| Loop walks | Logic only | Sensor through final element on site |
| Punch list | Vendor punch | Site punch plus field-engineering punch |
| Sign-off | FAT witness procedure | MC and RFSU declarations |
Step by step.
- 01Reconcile FAT scope to as-installedDifferences between the FAT-witnessed configuration and the as-installed configuration surface row-by-row. Field-installed substitutions get flagged for engineering review before SAT.
- 02Build the per-loop SAT walk-downPer-loop check sheet from the loop folder index populates with the field-verified columns blank. The commissioning electrician walks each loop on site.
- 03Cable termination verificationPer-cable run-out walks. Cable tag, JB terminal block, wire color, and termination strip number verified against the as-installed cable schedule.
- 04JB labeling verificationPer-JB walk. Terminal block labeling verified against the JB schedule. Mislabeled terminals are the most common SAT punch item.
- 05Per-system punch listOpen punch items collect per system. MC declaration cannot be issued with open critical punch items. The punch tracker drives the closeout sequence.
- 06Issue MC and RFSU declarationsPer-system MC declaration when critical punch items close. RFSU declaration when the system is ready for energization. Owner-engineer sign-off follows.
Common questions
Why does SAT need separate documentation from FAT.
Can the SAT walk-down sheet capture field-engineering punch items.
Related.
Start a workspace.
Upload the source documents, run the workflow, ship the document in the column shape the next consumer expects.