| freedom from unacceptable risk to the outside from the functional and physical units considered |
Note 1 to entry: The definition of “safety” in combination with other words may gradually (as in “product safety”, “machinery safety”) or completely (as in “workers safety”, “safety belt” or “functional safety”) change. For the use of the word safety, see IEC Guide 51, Clause 4. [ISO/IEC Guide 2, Standardization and related activities – General vocabulary]
Note 2 to entry: In standardization the safety of products, processes and services is generally considered with a view to achieving the optimum balance of a number of factors, including non-technical factors such as human behaviour, that will eliminate avoidable risks of harm to persons and goods to an acceptable degree. [ISO/IEC Guide 2]
Note 3 to entry: In many other languages than English there is only one word for safety and security.