I'm trying to figure this out. I mean once a boiler explodes isn't the danger mostly past? It isn't quite like a fire where the danger increases.
And so we had fire drills and even a couple of real fires back in the dark ages when I was a captive of the East Williston Union Free District, and we just went outside until the drill was over or the danger past. Sometimes it was even cold outside. But they never bussed us anywhere, and certainly not to an undisclosed location. Maybe they couldn't rouse the bus drivers who didn't know there was going to be an emergency, or maybe they just didn't care about us back then.
ML/NJ
I don’t know the location, but the last thing I would want after anything like a boiler explosion or fire is a bunch of kids at the site. It would be far easier to get them somewhere else so their parents could come get them. Have you ever tried to contain a bunch of excited/upset kids?