Hmmm, OH&S, we're in an occupation (yes I know, volunteers technically not, but ya get the point) that involves very very hot conditions, and very very wet conditions, and hey think sliding down a pole is dangerous. Although, I do know a not so nice story of someone climbing a flag pole at my school on muck up night and someone squirted him with detergent and he slid down, not gonna tell ya the ending, but needless to say, he gave off a "piercing" yell.
But flag pole is a bit different to fire pole tho...
Hopefully!