b'Figure 2. THOR capsule configurationsfresh (THOR-C, aLEU-P2M) and pre-irradiated fuel (MOXTOP, THOR-M, EPIC)capsule adaptations, tuned for eachto commission a sodium heat sinkconfigurations for measuring clad-specific experiment objectives. testing capability in TREAT. Thisding rupture, annular fuel tempera-There are several experimentwill be accomplished by executingture and in-situ fuel elongation. campaigns that the THOR capsuleseveral transients of unirradiatedThe THOR Advanced Low-Enriched supports. The first experiment(i.e., fresh) U-10Zr to demonstrateUranium Power-to-Melt (aLEU-P2M) campaign will be the THOR Commis- the ability of the capsule to measureexperiment (1) assesses the effect sioning (THOR-C). The primaryand detect transient overpowerof thermally conductive inserts in THOR C experiment objective isphenomena typical of SFR fuels.fresh UO 2 -based fuel by measuring THOR-C will have three separate 150 2021|AFC ACCOMPLISHMENTS'