|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||Transient Swelling of SiC/SiC Composites and its Implications to Fuels and Core Designs
||Yutai Katoh, Takaaki Koyanagi, Gyanender Singh, Ken Yueh
|On-Site Speaker (Planned)
Secondary stress and geometrical evolutions of SiC-based nuclear fuels and core components are dictated primarily by the inherent transient swelling of SiC through complex interplay between irradiation strain and temperature gradient. In the present work, neutron-induced swelling of monolithic CVD SiC nuclear grade SiC/SiC composites was experimentally determined to an unprecedented accuracy. The SiC swelling model was calibrated using the data in the temperature and dose ranges of interest to LWR applications. Moreover, the subtle swelling difference between monolithic and composite samples and the unexpected anisotropic behavior for the SiC/SiC composite swelling are discussed. Finally, the effects of various differential and anisotropic swelling behaviors on the stress evolutions in fuel claddings and the geometrical evolution of core periphery components are analyzed and discussed.
Work supported by Advanced Fuels Campaign, Nuclear Technology Research and Development Program, Office of Nuclear Energy, U.S. Department of Energy, under contract DE-AC05-00OR22725 with UT-Battelle, LLC.
||Planned: Supplemental Proceedings volume