What is SAT (Site Acceptance Test)? Difference between SAT & FAT:

What is the SAT (Site Acceptance Test)?

An SAT (Site Acceptance Test) is a performance test conducted on the client’s site /location in accordance to client-approved test plans and specifications to show the system is installed properly and interfaces with other systems and peripherals in its working environment.

The test aims to test whether the system is in accordance with what is stated in the system functional specifications (validation), The test will be carried out by the developer and the results will be assessed by the user and verified.

SAT test consists of two stages: Before shipping and after installation, it involves all aspects of the system: hardware, application software, software environment, location, and operators.

SAT test documents:

  • Philosophical Test
  • Test Plan
  • Test specifications
  • Test logs
  • Test summary
  • Commissioning Report
  • Certificate of Acceptance

List of items to consider while performing SAT:

  • Finishing the visual check

  • Main visual check

  • Internal box pressure and ventilation setting

  • Utltilies functionality and setting check

  • Functionality/inetrloack verification

  • Safety device and interlocks check

  • Operators training.

General SAT procedure:

Delivery check:

After pre-delivery tests are carried out and received. Additional things to do:

  • Check for damages of hardware, software, and documentation.

  • Hardware Test: no damage during storage and shipping, installed properly, operating properly in the environment to be installed (electricity, room, etc.).

Testing of all Supporting equipment needs:

  • Test schedule on site:
  • Hardware validation test
  • Hardware test with connection to site
  • Fault validation testing: response out-of limit input
  • Functional testing: comprehensive functional system testing
  • Extended running

Other aspects that must be considered:

  • Staff training that will operate the system
  • Staff training that will maintain the system
  • Other requirements for tuning systems, eg max throughput, max. efficiency, minimum cost
  • Other evidence such as alarm systems, safety, security, and back-up

Difference between SAT & FAT:

Any project involving the development of equipment from a third party should incorporate a FAT and SAT into the life cycle of the system. It will lead to a much easier IQ / OQ process if both the FAT and SAT are performed correctly.

These are basic differences between SAT and FAT:

What is?

FAT: Before shipping to a customer, a FAT or Factory Acceptance Check is conducted at the supplier. The manufacturer is testing the system in compliance with the customer’s validated check plans and requirements to show that the device is at a stage to be checked on site.

SAT: A SAT is a site validation test; the device is evaluated in compliance with the client’s validated test plans and requirements to demonstrate that the system is properly installed as a d interface in its working environment with other devices and peripherals.

Publication source:

FAT: GAMP 4, Good Automated Manufacturing Practice Guide for Validation of Automated Systems

As per the standard a FAT documentation includes:

  • Performed FAT Protocol
  • Maintenance and User’s manual
  • Recommended spare parts list
  • Certificate of compliance
  • As built technical drawings (electrical, mechanical, pneumatic & process schemes)
  • Materials certificates/data sheets
  • Main equipments data sheets
  • Instruments calibration certificates
  • Welding Processes qualification

SAT: ISPE Commissioning and Qualification Baseline Guide (March 2001)

Below is a list of some items that should be considered when performing a SAT as per ISPE :

  • Finishing Visual check
  • Main components visual check
  • Internal box pressure and ventilation setting
  • Utilities functionality and setting check
  • Functionality/Interlocks Verification (Mechanical & Software)
  • Safety devices and interlocks check