Its the 21st Century - everybody, especially the Navy and the contractors, publish all sorts of stuff that used to be considered "secret". Over 15 years ago a senior USMC officer lectured some of us and he said that anything on a computer would or could be public knowledge with 18 months. I reckon he was very far-sighted.
I can't imagine that the Russians and the Chinese don't have a pretty good set of blueprints and the Operating Manual (draft) of the PWR3 in hand already.