Knowing how kids can get into stuff, I'd say that was almost impossible.
You might try a 12 foot high barbed wire fence though, and hope that slows them down a bit (grin).
Getting serious,you lock everything up and bold everything down, and make it clear that messing with anything with out you around is a big no-no. It's got to be so they can't get into it at all.
When they get older, then you can put them to work on the system.