Any automated system potentially poses a risk to people, property or the environment. For this reason a number of safety measures have been taken. Safety standards have been created with one thing in mind: limiting risk.
With these standards as a framework, functional safety can, after a risk analysis, provide appropriate protection. Hazards are anticipated during the system design phase and are dealt with before they occur.
These standards have evolved to increase the safety level and have been applicable since 2012.