Integrated Factory Acceptance Tests

摘要

When adding, modifying or upgrading a system, many critical infrastructures conduct a factory acceptance test (FAT). A FAT includes a customized testing procedure for systems and is executed before the final installation at the critical facility. Because it is difficult to predict the correct operation of the safety instrumented system or consequences due to failures in some parts of it, a FAT provides a valuable check of these safety issues. Similarly, since cyber security can also impact safety of critical systems if a system is compromised, it naturally makes sense to integrate cyber security with the FAT, a concept that brings extreme value and savings to an implementation process. An integrated factory acceptance test (IFAT) is a testing activity that brings together selected components of major control system vendors and industrial control system (ICS) plant personnel in a single space for validation and testing of a subset of the control system network and security application environment.