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What does a Factory Acceptance Test (FAT) consist of?

While there are standard tests that are routinely conducted, there is no set checklist during an FAT; it consists of various of inspection points and tests per the request of the customer, based on requirements and unique equipment specifications.

While there are standard tests that are routinely conducted, there is no set checklist during an FAT; it can consist of a variety of inspection points and tests per the request of the customer, based on your requirements and unique equipment specifications. In general, the following things are covered during an FAT:

  • Comprehensive inspection – this is typically customized based on the equipment and the requests of the customer but can include a range of conformity checks and verifications (e.g. does the actual equipment match up to the drawings and name plate data).
  • Contract audit – this consists of a review of the original agreement to make sure all contractual obligations are met.
  • Water test – this procedure simulates the system in operation to provide proof of functionality. These tests usually include verification of relevant documents, including user manuals, P&IDs and any type of instructions that come with the equipment to make sure they are accurate.

It’s important to note here that there are varying levels of an FAT. They can be performed at a very basic level, such as setting up the main pieces of the system with temporary wiring and making sure everything moves as it is supposed to, or a more complete FAT can be conducted where the manufacturer physically builds the whole system in their shop to test it fully. In the latter example, the system is then taken apart, moved to the customer’s site, and put back together again.