Nuclear energy is, to this date, the only large and stable low-carbon energy source utilized effectively by humankind.
With its growing and widely recognized importance in the fight against global climate change, the age-old question of available uranium resources once again becomes discussed in relation to the predicted growth in the installed nuclear power capacities for the coming decades.
An indivisible part of this issue is the growth in the amount of spent nuclear fuel that is connected to the operation of thermal reactors. For this reason, fast reactor technologies with closed fuel cycles seem to be a vital part of the nuclear future.
One of technologies promising to provide a sustainable, inherently safe, and low-carbon energy source, is the concept of a Gas Cooled Fast reactor. It possesses all the advantages of already existing of high-temperature gas reactors, with the added value of the closed fuel cycle.