Abstract
The impacts of various ATF (accident tolerant fuel) claddings on neutronic performances of pressurized water reactor fuel assembly and soluble‐boron‐free small modular reactor autonomous transportable on‐demand reactor module (ATOM) are investigated. There are two ATF cladding concepts which are evaluated here: (a) Coating Zircaloy‐4 cladding with thin layer of Cr or Cr alloys; (b) High‐strength and oxidation‐resistant claddings: SS‐304 and FeCrAl. A minor modification of burnable absorber loading in the ATOM core is proposed to adopt the selected ATF cladding and maintain the core performances.
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