Site Acceptance Test (SAT)
Site Acceptance Test
What a definition is not
A definition is SPEQ’s plain-language decode of how a term is used in practice, cited to the documents that define it. It is a practitioner reference, not legal or regulatory advice, it does not replace the definition in the source, and where a regulator’s wording differs the regulator’s wording governs.
A structured verification performed after equipment or a system has been installed at the regulated facility, confirming it functions correctly in its final location and operating environment before formal qualification proceeds — catching any damage, miscalibration, or interface issues introduced during transport and installation.
Where FAT confirms the equipment worked correctly at the vendor’s facility, SAT confirms it still works correctly once it has been shipped, installed, and connected to the site’s own utilities, controls network, and adjacent equipment — conditions that cannot be fully replicated on the factory floor.
SAT findings are resolved before IQ execution formally begins, so that qualification is not spent chasing installation or transport-related defects that a pre-qualification acceptance check should have caught.
- —Performed on-site, after installation, following FAT
- —Verifies site-specific utility and interface connections rather than standalone equipment function
- —Catches transport or installation damage before formal IQ execution begins
- —Part of the engineering commissioning process that precedes GMP qualification
ISPE Baseline Guide Vol. 5 (Commissioning & Qualification); ASTM E2500-25
Frequently asked questions
What does Site Acceptance Test (SAT) stand for?
Site Acceptance Test (SAT) stands for Site Acceptance Test.
What is Site Acceptance Test (SAT)?
A structured verification performed after equipment or a system has been installed at the regulated facility, confirming it functions correctly in its final location and operating environment before formal qualification proceeds — catching any damage, miscalibration, or interface issues introduced during transport and installation.
Which regulations cover Site Acceptance Test (SAT)?
ISPE Baseline Guide Vol. 5 (Commissioning & Qualification); ASTM E2500-25