Yeah, right. As you'd know, the size of your system is immaterial when it comes to this stuff, the basic rules are essentially the same in that they all come under the treaty (it's highly unlikely your country isn't a signatory-there being very few that aren't).

In essence, that means the simplest approach is to use dedicated and or standardized systems (i.e.: in measurement/accounting) wherever possible then there's little or no argument when the inspectorate arrives. (From my comment you'll know my background.)