What is Factory Acceptance Test (FAT) procedure and please send me an example.?

Question

Especially for DCS.

Answer 1

It is a list of tests that need to be run at the vendor's site before a DCS is considered sufficiently correct that it can be shipped to the customer's site.

It typically has a separate test for each of the functions to be performed and for each of the facets of that. For example if the DCS includes a pump that pressurizes bubbler level sensors, the test would include verifying that all internal electrical connections for the pump have been brought to the field terminal points that the documentation shows; that the pump runs when the control system commands it on; that the interlocks shut it off when appropriate; that the air is delivered to the correct ouput fittings; that the current draw is as specified; and that there are no air leaks in its internal plumbing.

For each of these issues the vendor needs to demonstrate that it is correct and a representative of at least the vendor and the buyer sign off that they have witnessed the test and that the results were correct.

Answer 2

FAT is applied formally and be witnessed by the system admin, with a formal record of discrepancies and non conformities and how they are to be handled. e Factory Acceptance Test (FAT) is a major project milestone in an electrical installation project where the equipment and/or system integrator demonstrates that the system design and manufacturing meets the contract or Purchase Order (P.O.) specifications (derived from the Functional Requirements Document (FRD), created by the system owner/project manager/project team).