Factory Acceptance Test (FAT) is done at the equipment manufacturing site of the vendor before the shipping. These tests play a vital role in ensuring guaranteed quality product. The equipment has to undergo what is called Factory Acceptance Test (FAT) so as to ensure its proven quality and compliance. The test may include performance, physical or chemical investigation and is performed at the site of the manufacturer of the equipment.

The protocol on the previous tests performed and factory acceptance test report should also be supplied in the documentation. The Factory Acceptance Test includes conducting a series of tests, which prove that the equipment is designed, executed and works in the agreement and according to the user's requirements. It's very important that the testing is approached seriously and prepared.