Wow
Well a computer to controle, even a smal part of a nuclerpowerplant must be special.
It must be incridible secure and 0 risk of any error. 3 power 5 computers all with hotswap HD, EEC memory and exstrem UPS. So that if one or even 2 copmuters fail there will be an exstra machin. The machin shuld rune a special made UNIX OS with minimal stuff on the OS, just the things that really is needed. Less things to f*** up.
A mac mini to conrole a nuclarpowerplant is like having a MS driven car, with a new meaning on screen of death.