Fail safe
A Fail-Safe machine resorts to a safe mode if anything goes wrong. This means that nothing dangerous can happen, i.e., it fails safely. We can use the term for physical machines and also abstract things. Computer programs and systems, for example, are abstract.
A fail safe system is one which, due to the characteristics of its equipment and components and the way in which they are integrated, is guaranteed that, in the event of any fault appearing, the system will always go to a safe status, normally affecting availability but never, and in no case, affecting safety.
What is fail-safe.(2023). Market Business News. Retrieved from: https://marketbusinessnews.com/financial-glossary/fail-safe/
What does it mean that a system is fail safe. Leedeo. Retrieved from: https://www.leedeo.es/l/fail-safe-system/