KETEP 세계에너지시장정보

In her thesis work, Virta developed a PGET device, i.e. an imaging method called passive gamma emission tomography, which measures the gamma radiation emitted by spent nuclear fuel. Nuclear fuel consists of rods, a few meters long and containing uranium, which are gathered into an assembly to act as a fuel element. The PGET instrument can produce an exact cross-section image of the fuel assembly.

The cross-section image allows us to check that the assembly still retains all the rods. The challenging thing with this method is that the fuel dampens the radiation very efficiently.