Neutronic Analysis on Potential Accident Tolerant Fuel-Cladding Combination U3Si2-FeCrAl

• DOI: 10.1155/2017/3146985
• Publication Date: 2017-02-01T11:00:25Z
• Authors: Shengli Chen; Cenxi Yuan
• Keywords: Cladding (metalworking)

Neutronic performance is investigated for a potential accident tolerant fuel (ATF),which consists of U$_3$Si$_2$ and FeCrAl cladding. In comparison with current UO$_2$-Zr system, has better oxidation resistance but larger thermal neutron absorption cross section. higher conductivity uranium density, which can compensate the reactivity suppressed by FeCrAl. Based on neutronic investigations, possible U$_3$Si$_2$-FeCrAl fuel-cladding systemis taken into consideration. Fundamental properties suggested combination are in assembly.These include moderator temperature coefficients, control rods worth, radial power distribution (in rod), different void coefficients. The present work proves that new less variation during its service lifetime. Although, compared it little deviation negative coefficient worth important, variations these parameters important lifetime fuel. Hence, system ATF candidate from view.