GB/T 20438.1-2017

This standard specifies the general framework, requirements, and lifecycle activities for achieving functional safety in electrical, electronic, and programmable electronic (E/E/PE) systems that perform safety functions. It is applied across industries such as manufacturing, process control, machinery, and automotive sectors to guide the design, integration, and validation of safety-related systems, ensuring they reduce risk to a tolerable level. The standard is used by engineers and safety assessors during system development and certification to define safety integrity levels (SIL) and manage systematic failures.