@boulderjohn
I do not wish to derail the thread but if you do a search on google with "emergency vs incident" you might notice that the definition is coherent with what I said in:
-health and safety
-aviation
-business
and a few others.
See for example:
emergencies crises and disasters
Also even if hardly authoritative a good definition is here
Emergency - Wikipedia
Very often the problem is to distinguish between an Accident and an Incident and therefore the Mishap definition of the military. But once again I do not want to
If there is the need to reinvent the wheel be my guest, accident analysis has been developed and perfected in the aerospace industry where checklist have been introduced and now are being adopted in many other industries. I think best practices have been developed there and they keep being perfected there so that is where I source the language from.
For the way things are done see:
ASRS - Aviation Safety Reporting System
ASRS CALLBACK - Aviation Safety Reporting System
Kind regards