No. Win Phone 8 apps run only on phones. WinRT apps run only on tablets and PCs.

Why would guarding a building containing a nuclear plant be any different than guarding any other building? You set up a perimeter and control who goes in and who goes out. No reason to make it complicated. And why did they let a nun any near a nuclear plant?? Nuclear plants aren't run by god and nuns can't help you monitor the rods.