This is my 2x40 Nuclear power plant lay out.
I've designed it so more can be stacked next to it for a mega base set up. It's been stressed tested and the heat pipes at the ends didn't go below 650C
There are 624 heat exchange's in rows of 12, each row has 1 offshore pump and then goes into 20 steam turbines.
In total this set up will give off a little bit over 6GW's of power at it's peak.