Site Acceptance Test
Site acceptance test is the post-installation verification that confirms equipment performs correctly in the customer facility environment after delivery and hookup - it proves shipping, installation, and utility integration did not compromise tool readiness.
What Is Site acceptance test?
- Definition: SAT phase executed at the fab after mechanical install, utility connection, and safety clearance.
- Validation Focus: Facility interfaces, subsystem operation, alarms, and key readiness checks under site conditions.
- Environment Difference: Verifies behavior with customer power, gases, water, exhaust, and network controls.
- Release Context: Successful SAT typically enables transition to process qualification stages.
Why Site acceptance test Matters
- Integration Assurance: Confirms tool and facility interfaces are correct before process-critical work begins.
- Shipping Damage Detection: Identifies transport-induced misalignment or latent component failures.
- Safety and Compliance: Validates interlocks and utility behavior under actual site constraints.
- Startup Risk Reduction: Prevents hidden installation issues from appearing during production qualification.
- Accountability Clarity: Documents whether open issues belong to vendor delivery or site integration.
How It Is Used in Practice
- SAT Checklist: Use standardized tests aligned to FAT baselines and site-specific requirements.
- Gap Closure: Log and resolve SAT deviations before advancing to PQ or production release.
- Handover Evidence: Maintain signed SAT package as part of qualification and audit records.
Site acceptance test is a required installation-integrity checkpoint in tool commissioning - passing SAT confirms the equipment is correctly integrated and ready for process capability verification.