2018 | AFC ACCOMPLISHMENTS 38 This process included substrate preparation, application of coatings, finishing of coatings, and measurements and documentation of each sample before shipment to MIT for testing. Following testing, MIT has been returning samples to UW-Madison for characterization. Characterization includes topological and cross-sectional Scanning Electron Microscopy (SEM), energy dispersive spectroscopy (EDS; compositional analysis), x-ray diffraction (XRD), and other techniques as needed. On the simulation side, the system code modeling with MELCOR and TRACE has continued. MIT and UW successfully finished aTRACE/MELCOR short term station blackout benchmark to gain confidence in each system code prediction of the increased gains in additional coping time provided by theATF concepts. In addition to pressurized water reactors (PWRs), MIT and UW have extended both code accident analysis to boiling water reactors (BWRs).The new results thus far still show notable but modest gains in coping time.The fuel performance of Cr-coated Zircaloy and Cr-coated SiC/SiC composite claddings during normal operation, power ramp and loss of coolant accident were performed with INL’s BISON tool by MIT.The rod ejection simulations of the coating with BISON was performed by Structural Figure 3. Microstructure created by design tool using mesoscale simulation and macroscale modeling that will determine the most efficient use of a given additive fraction to maximize the increase in thermal conductivity.