|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||PCI Analysis of Coated Zircaloy Cladding under LWR Steady State and Startup Operations
||Nathan Capps, Wenfeng Liu
|On-Site Speaker (Planned)
Accident tolerant fuels are described as a fuel form which exhibits improved material response, as compared to traditional Zircaloy clad UO2, during an accident scenario, while maintaining or exceeding current reactor operating expectations. One proposed concept applies a coating material on the cladding outer surface to improve high temperature corrosion properties. This research focuses on the pellet-clad interaction mechanical response of coated cladding during operations. Using the MOOSE-based, finite-element fuel performance code BISON and reactor data obtained from Diablo Canyon Unit 2, a preliminary analysis evaluates the performance of a coated clad, under normal operation and mechanical stability under PCI during a reactor startup. This presentation will summarize BISON 2-D axisymmetric and radial-circumferential simulations comparing 20, 50, and 100 micron FeCrAl coating thicknesses to traditional Zircaloy clad under PCI. These results will be used to determine the feasibility for the use of Zircaloy coated with FeCrAl as an ATF candidate.
||Planned: Supplemental Proceedings volume