@agent5551, Good point, but this was only my first reactor. Check out the PUH - 6 - 1, It has what your describing.
If this was a real reactor the world would be glowing by now. Any real reactor has a heat echange mechanisim for keeping the radiation in and animals out.
Thanks for the feedback guys, I will try and improve on it next time.
Dogucan : seems like I am blind :)
your reactor is okay but you should do a cooling chamber
rage179; is uranium isn't radioactive element ???
A little simplistic, since it doesn't generate energy. Instead you just cheated with a bit of wall. and @Rage: You aren't blind, this reactor has no Nuclear Element.
I don't see radioactive elements ... Am I blind ?