b'Figure 1. Typical Cross Section of AFC-Series Irradiation Tests.contact cladding where the latterAccomplishmentsobjective has focused developmentsDuring fiscal year 2020 the AFC irra-both on the use of FCCI-mitigatingdiation team oversaw the start of three cladding internal liners and the usenormal-length (~60 day) irradiation of fuel alloy additives which tend tocycles for continued irradiation of the form stable intermetallic compoundsexperiments noted above. The AFC-3F, with lanthanides. Most of the AFC-3-4C, and -IRT1 tests are expected specimens, and some of the AFC-4to complete their current irradia-specimens, have already competedtion in early autumn of 2020 while their planned irradiation. Presently 16rodlets from the AFC-4B and -4D will rodlets are undergoing their final irra- continue one more irradiation cycle diation cycles. These rodlets are fromending in winter of 2021 just prior to the AFC-3F, -4B, -4C, and -4D sub- ATRs shut down for a 1-year beryl-campaigns along with rodlets fromlium replacement outage. These rodlets the first phase of the Integral Recy- will be allowed to cool and shipped cling Test (AFC-IRT1); a collaborativefor PIE in 2021. Each of these rodlets effort undertaken with the Koreanis expected to achieve a different final Atomic Energy Research Institute toburnup level in accordance with its evaluate the effects of using pyromet- objectives. An impressive final peak allurgically recycled light water reactorburnup slightly exceeding 20 at% is fuel in metallic fuels. expected in two of the AFC-4B rodlets.2020|AFC ACCOMPLISHMENTS 139'