About the usage of seawater and the problems it creates:
Now the Pacific Ocean has an average salt content of a 35 g / 1000 g of water
We assume that the reactor evaporates 2000 g (2 litres) water / second
therefore:
2 kg/s * 3600 s * 24 * 7 * 0.035 = ~42 tons per week or 6 tons a day ...