Factory Acceptance Test (FAT) and Site Acceptance Test (SAT) are very important stages applied to equipment/system, not only in the pharmaceutical industry but also in clinical and medical device companies.
These two stages should be part of the validation life cycle in regulated environments and should be included in the Validation Master Plan (VMP), which is a document that includes the methodology, time schedule, steps of validation activities and responsibilities carried out by the company for all validation work being performed.