Tritium has a half-life of 12 years so there is no deep pool of tritium upon which to draw. The primary source of tritium on earth is cosmic-ray interactions in the upper atmosphere that produces 7.5Kg of tritium a year worldwide.[1]
Isn't that going to cause a serious problem if it requires 323Kg/yr of tritium just to power New York City?
Apparently no, because it can be made by the fusion process itself, via contact with lithium, and there's enough proven reserves of the latter to supply us for 100s of years.
Nobody knows how to get tritium at PPB concentration from the thousand tons of radioactive molten FLiBe it is dissolved in. You have to process all of it every day because you need that tritium for fuel tomorrow.
Isn't that going to cause a serious problem if it requires 323Kg/yr of tritium just to power New York City?
[1] https://www.sciencedirect.com/topics/earth-and-planetary-sci...