I don’t think ordinary shelling gonna do much to a Nuclear Power Plant.
Jesus, man all you gotta do is damage cooling pumps, piping or control system. Have you ever seen what an American 105 or 155 firing HE can
do?
Aside from that, it is modern military tactics now to put military assets into sensitive areas...schools, churches, mosques, hospitals...in the hopes that nobody will attack. We shall see what happens, ask any old infantry grunt...arty makes mistakes occasionally.
