ANSI/ISA-61511-2-2018 / IEC 61511-2:2016

ANSI/ISA-61511-2-2018 / IEC 61511-2:2016, Functional Safety – Safety Instrumented Systems for the Process Industry Sector – Part 2: Guidelines for the Application of IEC 61511-1:2016 (IEC 61511-2:2016, IDT), provides detailed guidance for applying IEC 61511-1:2016, Functional Safety Instrumented Systems for the Process Industry Sector – Part 1: Framework, Definitions, System, Hardware Application Programming Requirements, along with its amendment – AMD1:2017 (ANSI/ISA-61511-1-2018 – Part 1) to the functional safety of safety instrumented systems (SIS) in the process industry. It covers the entire SIS safety lifecycle, including hazard and risk assessment, allocation of safety functions, SIS design, application programming, verification, validation, installation, operation, maintenance, modification and decommissioning. ANSI/ISA-61511-2 emphasizes the management of functional safety, documentation requirements, configuration control and audit processes to support compliance and effective safety performance. It includes extensive annexes with practical examples, application program development practices, testing procedures and guidance on maintaining system integrity and cybersecurity. It aims to promote uniformity and best practices in designing and managing SIS to achieve the required safety integrity levels (SIL) and reduce risks in hazardous industrial processes.