Table 3.

Summary of current TRLs, status, and next development steps for the envisaged fuel systems.

Fuel system Current estimated TRL (in EU) Current status Next steps in EU development
U3Si2 fuel with 4.8 gU/cm3 TRL-9 Readily used in research reactors Improvements in fabrication yield for increased loading

U3Si2 fuel with increased density (or loading) TRL-7 Representative fuel assemblies tested in relevant irradiation conditions, validation ongoing Expand window of experience via PIE of MEs (3) and GTA test. Increase applicability for different HPRR conditions.

U-7Mo dispersion fuel TRL-5 Full-scale plate tested in relevant irradiation conditions, with different improved design, validation pending Advancement to TRL-6 via E-FUTURE-III test

U-10Mo monolithic fuel TRL-5 Mini-scale plates successfully irradiated Advancement to TRL-6 via FUTURE-MONO-1 test and to TRL-7 via GTA-MONO test
(3)

Mixed Element (ME), modified BR2 driver fuel element, outermost HEU plates replaced with LEU.

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