There are very safe distros, there are very robust distros, there are very stable distros, some distros are all of this at the same time, but there are projects where a small problem could turn out to be a disaster and where you cannot afford even the slightest problem. Those systems are critical And therefore they need something more than that, they need special care to avoid this type of incident that would end with a failure of an important system, or an accident or loss of vital data, environmental damage, loss of life, a crime, etc. .
Yes, there are critical Linux-controlled systems that can control something like an industrial system where a disaster could end with a spill or leak of radioactive or toxic material, where any disaster could result that could end with some death, etc. , and that is something much more serious than if your system restarts or fails and has made you lose a job or a game of a video game ... For this it has arisen Elisa project full Linux Foundation to put Linux as hard and solid as a rock on these types of critical systems.
This open source project with a woman's name, Elisa, actually saves the acronym Enabling Linux in Safety Applications. It aims to create and share a series of tools and processes to build a Linux-based operating system that can function extremely solidly in those systems or applications where greater security and stability are needed. For those potentially dangerous tasks, Elisa will provide a foundation on which to build.
Among the critical systems that could benefit from Elisa and that can take advantage of a Linux-based operating system They could be industrial (smart factories), robots that operate in dangerous or critical tasks, medical devices, autonomous driving systems (autonomous cars), control of nuclear processes, weapons or hazardous materials, etc. In fact, some companies have already been interested in it such as Toyota and BMW ...
Very good initiative, for industries that can cause damage to the environment. Congratulations!