Performance of accident-tolerant fuel and cladding (ATF) candidates must be assessed during the pellet-cladding mechanical interaction (PCMI) phase of a design-basis reactivity-initiated accident (RIA). We describe fiscal year 2019 research activities for the development of separate-effects testing for ATF cladding candidate iron-chromium-aluminum (FeCrAl) tube specimens under loading conditions comparable to PCMI.
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