The two-part standard series ISO 13849 applies to safety-related parts of control systems for high demand and continous mode. This includes their subsystems, regardless of the type of technology and energy (e.g. electrical, pneumatic, mechanical). Part 1 of the standard relates to general principles for design and part 2 is for validation.
The standards are relevant in all machinery-related sectors and are particularly useful for machine manufacturers, health and safety bodies, machine users and services providers.