Summary

The purpose of this report was to address the concepts and challenges of operational safety. We have seen that this is a comprehensive concept that cannot be characterized by a single variable, but rather by several parameters that constitute it: reliability, maintainability, availability, and security. We have also shown that these components are not generally completely independent.

• The user or operator should be able to express their needs by reference to these parameters: desired level of reliability or availability, maximum downtime, acceptable level of risk, etc.

• The designer (or even the user) must verify that the solutions chosen meet these requirements. To do so, functional safety methods and tools must be implemented. These include, but are not limited to: functional analysis,...