|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||AREVA NP’s Evolutionary Solution for Enhanced Accident Tolerant Fuel
||Jeremy Bischoff, Christine Delafoy, Elmar Schweitzer, Kiran Nimishakavi
|On-Site Speaker (Planned)
AREVA NP is actively developing an evolutionary enhanced Accident Tolerant Fuel (eATF) design showing enhanced performance in both nominal and accidental conditions. This concept combines: Cr-coated M5® cladding and Cr2O3-doped UO2 fuel.
Benefits in normal operations include improved reliability (the wear with alloy 718 springs reduced to only 1% of its uncoated reference), lower pin pressure up to 20 bars and greater operating flexibility. In accidental conditions, the Cr-coated cladding keeps a better coolable geometry due to smaller ballooning and burst opening size, and the high temperature steam oxidation is reduced by a factor 10 which decreases significantly the heat and hydrogen production. Additionally, the fission gas release in transients will diminish by 50% with the doped fuel thus decreasing considerably the release of radioactive elements.
The implementation of the AREVA NP eATF fuel concept is on-track with the insertion of lead fuel rods in a commercial reactor from 2019.
||Planned: Supplemental Proceedings volume