Start from the approved documents
Use the equipment list, drawings, instrument list, valve schedule and control sequence as the test basis. Confirm which customer representatives will attend or review evidence remotely. Resolve document changes before testing where possible, so that the test does not become a discussion about an undefined configuration.
Separate mechanical and functional checks
Mechanical inspection can cover assembly, identification, dimensions, access and documentation. Functional tests can cover instrument signals, valve commands and feedback, permissives, alarms and the agreed sequence. Pressure-equipment examinations and tests must follow the approved manufacturing and code requirements, with the appropriate records.
State the test-medium limitation
A water or simulated-signal test can verify many functions without reproducing the viscosity, crystals or foaming of the production liquid. Define which performance claims are demonstrated at the factory and which remain subject to a representative product trial or site acceptance. Avoid signing off production capacity solely from an unloaded animation.
Close the findings systematically
Record deviations with an owner, corrective action and evidence of closure. Identify any agreed items to be completed on site. Retain software backups, parameter files, test sheets and the final document revision. A clear FAT report reduces commissioning uncertainty and helps the local installation team understand what has already been verified.
General engineering guidance. Numerical examples are illustrative; project specifications and acceptance criteria are agreed for the actual duty.