b'Figure 3. Visual inspection ofOnsite visual inspections wereThese assemblies contain four Cr-coated Cr-coated LTRs in Gsgenperformed on Cr-coated Lead Testrods and all rods contain chromia-(GOCHROM program). Rods (LTRs) after a year of irradiationdoped pellets. Cr-coated rods showed in the Gsgen reactor. The Cr-coatinglustrous-gold appearance indicating showed excellent adhesion with thea significant reduction in corrosion underlying substrate and no signskinetics compared to uncoated rods.of delamination were observed. AsFramatome is also developing an EATF shown in Figure 3, a metallic brightcoated cladding design for Boiling appearance was clearly observedWater Reactors (BWRs) with a goal for Cr-coated cladding suggestingto introduce LTRs in a commercial a significant reduction in corrosionreactor in 2021. Engineering work kinetics relative to uncoated cladding. associated with LTR justification is In GFY 2020, Framatome completedcurrently ongoing.fabrication of Cr-coated cladding tubesSiC f /SiC concept development is to support one full EATF LTA inser- currently ongoing with a near-term tion in the Calvert Cliffs Nuclear Plantgoal of irradiation in Massachusetts #2 in early 2021. This test programInstitute of Technology test reactor in will allow for the evaluation of anyearly 2021. An environmental barrier interaction between a full bundle ofcoating has been identified to address EATF fuel rods and the rest of the fuelthe recession of the SiC f /SiC concept assembly structure and is a critical part(see Figure 4). A coating is applied on of the overall batch licensing strategy. the external surface of the cladding Visual inspections were performed onand it is currently being tested in an four LTAs after first cycle irradiationautoclave under representative PWR in Southern companys Vogtle Unit-2.conditions. Results after 70 days of 28 2020|AFC ACCOMPLISHMENTS'