b'Figure 3. Overall radiography of the IRT-2 irradiation testas seen in Figure 2. Scanning electronPIE. Unlike IRT-1, no surrogate fission microscopy on the IRT1-R2 claddingproducts were added to IRT-2, rather, the sample did not show a wastage layerrecycled U-TRU was used as recovered. (layer affected by intrusion of fuelThe design called for a Cr/CrN coated components or fission products / rareFC92, however, due to fabrication issues earth elements (RE) or corrosion. Somethis cladding was replaced by another Cr enriched grain boundaries and NbKAERI provided cladding with a Cr precipitates were observed. Microscopycoating. The two remaining rodlets used of the fuel was performed on theHT9 cladding, one included a 12 m center, intermediate and peripheryZr foil placed in between the cladding regions of the fuel radius. Resultsand fuel. The IRT-2 fuel slugs were cast showed several pore formations andusing the arc casting method in the AFCI elemental re-distribution. Based on theglovebox located in the Fuel Manufac-non-destructive examination results, theturing Facility (FMF). Following casting IRT-1 capsule/rodlets-1, 2, 5 behavedthe rodlets were loaded with sodium similar to Experimental Breeder Reactorand fuel and were welded closed. (EBR)-II experiments. Although destruc- Following welding, the fuel slugs were tive examinations did reveal somesettled and bonded, and final rodlet differences were seen which will requireinspections performed. The rodlets are further analysis but may have been dueawaiting a confirmation of irradiation to the low burnup or sample location. power and cycle before re-encapsulate Randall Fielding and Brian Newboldand to set the final fill gas mixture to oversaw and managed assembly of theprovide the target PICT. Figure 3 shows IRT-2 test. The IRT-2 fuel irradiationa radiograph of the completed rodlets.test is made up of 3 rodlets to replace the three IRT-1 rodlets removed for 134 2021|AFC ACCOMPLISHMENTS'