I'm with you Roundtuit.  As they say, there are far too many TWA (three work acronyms) in health and safety!   No, but seriously way back when I was learning about health and safety, I remember finder the widespread use of acronyms very confusing.  When I create documents/reports now I make an effort to ensure there are no acronyms used, full words only, surley this must help communication to those who may not be so savvy with 'health and safety speak'. 

And the definition of composite.... made up of several parts or elements

The dreaded death by acronym.  We need to be very careful with the use of them - avoid them, don't invent new ones, check you really do know what they mean in each context in which they are used.  Always define an acronym the first time you use it but better still don't use it at all and never, ever do away with a widely used and well known acronym and subvert it for an alternative use or come up with a new one for the same thing.    Are you listening HSE - this means you when you are drafting new regulations and guidance!