Isolation Refresher Training Reviews

Not all materials apply to my trade. An electrician can't lock off mechanical devices in my work, so why do I need to learn about them?

As an electrician in the RM, I am not allowed to perform mechanical isolations. As such learning about them, though interesting, was probably a waste of time. I suggest the course could be improved by streamlining the material to be more relevant to the tradesmen in attendance.