Well, you could house your precious scanner in a Faraday cage along with a RepRap and other "reboot the world" tech.
A Faraday cage will protect against an EM pulse? http://en.wikipedia.org/wiki/Faraday_cage
RepRap is a self-reproducible 3D printer? http://reprap.org/wiki/RepRap
And so with the RepRap (and some power source/converter) inside a faraday cage (with other physical protections as well), you're saying that this is the ultimate backup system for worst case scenarios? Do you have any links to provide more information about such a setup?
Yes, the Faraday cage protects against EM interference. But so does turning your computer off. Your main computer is fried? Pull out your old laptop and dust it off...