4 ms·Liquid sodium certainly is a choice. Very few non-experimental liquid sodium reactors out there.by denkmoon 2y agoLiquid sodium certainly is a choice. Very few non-experimental liquid sodium reactors out there.UltraSane 2y agoIt has a huge advantage of being able to operate at 850C at much lower pressures so you don't need 30cm thick steelpwarner 2y agoLow pressure, but you sure don't want air in there