b'Figure 3. Cr coating Optimized ZIRLO dramatically reduced the burst opening area between 700C and 1150CFigure 4. Temperature and pressure sensor assemblies prior to installation at ORNL HFIRcladding was comparable to uncoatedsecond test will reach peak tempera-cladding. NCSU completed valida- ture of ~1500C. These test results will tion of the Westinghouse thermal- be used to validate the beyond design hydraulic codes for High Burnupbasis accident performance models in Higher Enrichment fuel. the MAAP5 and MELCOR codes. The To validate the accident tolerantresults of these codes and probability benefit of Cr coated cladding, West- safety analyses which take advantage inghouse has supplied Cr coated Zrof FLEX capabilities, will be used as cladding for a second set of bundlethe basis for the NRC to allow down-tests to be performed at KIT. Thegrading of some equipment classifica-134 2023|AFC ACCOMPLISHMENTS'