Nuclear waste analysis of JET, utilising shutdown dose rate code enhancements

Le résumé fourni par la source

As the operational period of the Joint European Torus (JET) nears its scheduled conclusion in 2023, accurate predictions of the nuclear waste inventory and end-of-life shutdown dose rates (SDRs) based on actual operations are required for the transition to the repurposing and decommissioning of the reactor. The novel nuclear waste analysis method based on the Rigorous Two-Step (R2S), Cell-under-Voxel (CuV) approach used in the newly updated Mesh Coupled R2S (MCR2S) code has been employed to give precise predictions for the waste inventory and SDRs in JET. From this analysis, SDRs from the reactor and individual in-vessel components after extraction were obtained to guide waste management considerations. Also, crucially, the CuV method increased the precision of waste inventory predictions, allowing for a more rigorous decommissioning of the machine.

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