Hi Ksdregraff:
The biggest difference is going to be that none of the pipes or shutoffs can be exposed to the prisoners.
At the one prison I worked on in Maine all fixtures were stainless steel...no sharp edges or ways to access the pipes. I believe most of the fixtures also bolted through the back of the wall, so that the prisoners couldn't unbolt them even if they found a way to get the tools made or snuck in...
If I remember correctly some of the correctional facilities are even using their own specific pipe types....but I haven't worked with it so cannot add much beyond that.
Otherwise, most of the same rules applied across the board.
Some other plumbers will be popping in/out over the next 24 hours so pop back to see what they can add.
Hope that helps some...
MARK