ISA 62381 : 2011

1 Scope
2 Normative references
3 Definitions of Terms and Abbreviations
4 Testing of automation systems
5 Factory Acceptance Test (FAT)
6 Site Acceptance Test (SAT)
7 Site Integration Test (SIT)
Annex A - Factory Acceptance Testing Checklist
Annex B - Site Acceptance Testing Checklist
Annex C - Site Integration Testing Checklist

ANSI/ISA-62381-2011 (IEC 62381 Modified), Automation Systems in the Process Industry – Factory Acceptance Test (FAT) Site Acceptance Test (SAT), and Site Integration Test (SIT), provides detailed procedures and specifications for conducting critical tests on industrial automation systems. It covers the planning, execution, documentation and resolution of issues during FAT, SAT and SIT phases to verify that automation systems meet project requirements. This standard supports clear communication and agreement among owners, contractors and vendors, helping to manage risks and coordinate activities effectively throughout system delivery and installation. It includes comprehensive checklists and test plans tailored to various stages of testing, facilitating thorough assessment of hardware, software, interfaces and overall system integration within process industries.