In-air and in-water performance comparison of Passive Gamma Emission Tomography with activated Co-60 rods.

ABSTRACT: A first-of-a-kind geological repository for spent nuclear fuel is being built in Finland and will soon start operations. To make sure all nuclear material stays in peaceful use, the fuel is measured with two complementary non-destructive methods to verify the integrity and the fissile content of the fuel prior to disposal. For pin-wise identification of active fuel material, a Passive Gamma Emission Tomography (PGET) device is used. Gamma radiation emitted by the fuel is assayed from 360 angles around the assembly with highly collimated CdZnTe detectors, and a 2D cross-sectional image is reconstructed from the data. At the encapsulation plant in Finland, there will be the possibility to measure in air. Since the performance of the method has only been studied in water, measurements with mo

SUBMITTER: Virta R 

PROVIDER: S-EPMC10533838 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature