Parametric analysis of LIBRETTO-4 and 5 in-pile tritium transport model on EcosimPro

A new model for LIBRETTO-4/1, 4/2 and 5 experiments have been developed on ECOSIMPro© tool to simulate tritium in-pile breeding and transport into two separate purge gas channels with He + 0.1%H2. Release from lead lithium eutectic plenum with coupled permeation through an austenitic steel wall on the first and single permeation through EUROFER-97 in the temperature ranges of 300–550 °C can be simulated tuning the transport parameters involved. A parametric study has been performed to reduce the degrees of freedom and to determine the error caused in the simulation due to the uncertainty in experimental input data. The information obtained is essential for the experimental benchmarking. itium Permeation Percentage (TPP) is an output calculated parameter with low variations between 2 and 6% along the whole experimental time easy to compare (730 Full Power Days for LIBRETTO-4 and 520 for 5). Tritium transport parameter ranges verifying this output are defined herein.