Paul/Lyle,
The unfortunate thing about this whole thing,
is the fact that some experienced, well trained person, is going to be killed, eventually, by some-one (a trainee), that is not going to know the difference of Isolation and Re-commissioning.
Who would you blame?.
Just as an aside, do your apprentices go straight to Training, before the apprentice starts an apprenticeship, as they do over here?.