I believe the answer is electromagnetic interference. Reactors produce many forms of electromagnetic radiation, not just the ionizing type. Also note, that mac

I believe the answer is electromagnetic interference. Reactors produce many forms of electromagnetic radiation, not just the ionizing type. Also note, that machine vision was a big deal (for a while) in nuclear, because it would have meant that you could do without radio transmission, but even so, the robot would need to be really well shielded... (IANANE)