Single side water loading for nuclear.
The blueprint book shown contains 3 different versions for different fuel feeding of the reactors (single belt, double belt or logistic chests), and two variations, one with fuel saving in mind and one without. Single belt is for when you don't care about returning the empty fuel cells in the same direction, double belt is when you want the empty fuel cells to go back in the same direction and logistic chests is for robot use. There is enough space for roboports between reactors but are not included to give more flexibility on where to put them.
For the fuel saving variation, you need to manually feed one fuel cell for each reactor for the reactor to start working. Has 479 MW constant output, 1MW less due to the time it takes for a fuel cell to be replaced but in real world scenarios where you will not utilize 100% of your reactor 100% of the time you will get 480 MW instead.
Blueprint:
https://factorioprints.com/view/-Mw7kqrsTTF5jc3okv_y
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