|About this Abstract
||MS&T23: Materials Science & Technology
||Ceramics for New Generation Nuclear Energy System Application
||Development Strategy for SiC/SiC Composite Accident Tolerant Fuel Cladding
||Takaaki Koyanagi, Yutai Katoh
|On-Site Speaker (Planned)
SiC fiber–reinforced SiC matrix (SiC/SiC) composite cladding technology is an engineered cladding designed to withstand the severe thermomechanical and chemical environment in light-water reactors (LWRs). Deployment of SiC/SiC in LWRs could offer enhanced performance in design and beyond design basis accidents, thereby removing economic restrictions compared with existing fuel cladding concepts. This paper outlines the SiC-based cladding development strategy. The near-term R&D goal is to advance SiC cladding concepts to a maturity level suitable to support lead test rod (LTR) insertion into a commercial LWRs. The key issues to address through successful demonstrations are (1) hermetic cladding and end plug demonstration, (2) steady-state corrosion resistance/material property issues, and (3) capability to effectively model LTR performance. Demonstration of hermetic cladding under normal operating environments has been identified as one of the most critical feasibility issues. The material property solutions will be delivered numerically and experimentally.