On Advanced Fuel Design Features with ATF and AFC for Operating CANDU Reactors

Abstract of the technical paper/presentation presented at:
CNS 15th International Conference on CANDU Fuel
August 21-24, 2022

Prepared by:
Ho Chun Suk
Canadian Nuclear Safety Commission

Abstract:

Accident-tolerant fuels for light-water reactors (ATFLs) have become a topic of international interest ever since the March 2011 events at the Fukushima Daiichi nuclear power plant in Japan.  ATF features are designed to improve fuel system performance under accident conditions. With increased enrichment required to offset the negative reactivity of LWR ATF materials, fuel cycle economics can be improved if fuel can be licensed for higher burnup (HBU) than typical current limits. An international effort is currently under way to investigate the fuel safety implications of extended enrichment for ATFLs.  In light of international activities related to LWR operation, this paper examines possible options for advanced CANDU fuel design using accident tolerant fuels (ATFs) and advanced fuel cycles (SFCs).  Considerations related to safety enhancements, economic improvement, operational enhancements and high performance are addressed.

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