As for the parts of the steel that do get irradiated, anybody interested in seeing a flame cutter going to town to Blue Oyster Cult? I think so...
https://www.youtube.com/watch?v=p8Jt8EMF5Lg
I'd love to see some videos of robotic diamond wire cutters on the biological shield concrete, but haven't found any of those.
Edit: found one! From Sweden https://www.youtube.com/watch?v=yc5jdvc1yD8
Intuitive, readily interpretable at a glance, spatially oriented (instead of tucked behind layers of tabs and recursive settings).