Development Status of Accident-tolerant Fuel for Light Water Reactors in Korea

For a long time, a top priority in the nuclear industry was the safe, reliable, and economic operation of light water reactors. However, the development of accident-tolerant fuel (ATF) became a hot topic in the nuclear research field after the March 2011 events at Fukushima, Japan. In Korea, innovat...

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Bibliographic Details
Published in:Nuclear engineering and technology 2016, 48(1), , pp.1-15
Main Authors: Kim, Hyun-Gil, Yang, Jae-Ho, Kim, Weon-Ju, Koo, Yang-Hyun
Format: Article
Language:English
Subjects:
Accident-Tolerant Fuel
Fukushima Accident
Microcell Fuel Pellet
SiC Composite Cladding
Surface-Modified Cladding
원자력공학
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Summary:For a long time, a top priority in the nuclear industry was the safe, reliable, and economic operation of light water reactors. However, the development of accident-tolerant fuel (ATF) became a hot topic in the nuclear research field after the March 2011 events at Fukushima, Japan. In Korea, innovative concepts of ATF have been developing to increase fuel safety and reliability during normal operations, operational transients, and also accident events. The microcell UO2 and high-density composite pellet concepts are being developed as ATF pellets. A microcell UO2 pellet is envisaged to have the enhanced retention capabilities of highly radioactive and corrosive fission products. High-density pellets are expected to be used in combination with the particular ATF cladding concepts. Two concepts—surface-modified Zr-based alloy and SiC composite material—are being developed as ATF cladding, as these innovative concepts can effectively suppress hydrogen explosions and the release of radionuclides into the environment.
ISSN:1738-5733
2234-358X
DOI:10.1016/j.net.2015.11.011