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Development of Innovative Light Water Reactor Nuclear Fuel Using 3D Printing Technology
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 Title & Authors
Development of Innovative Light Water Reactor Nuclear Fuel Using 3D Printing Technology
Kim, Hyo Chan; Kim, Hyun Gil; Yang, Yong Sik;
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To enhance the safety of nuclear reactors after the Fukushima accident, researchers are developing various types of accident tolerant fuel (ATF) to increase the coping time and reduce the generation of hydrogen by oxidation. Coated cladding, an ATF concept, can be a promising technology in view of its commercialization. We applied 3D printing technology to the fabrication of coated cladding as well as of coated pellets. Direct metal tooling (DMT) in 3D printing technologies can create a coated layer on the tubular cladding surface, which maintains stability during corrosion, creep, and wear in the reactor. A 3D laser coating apparatus was built, and parameter studies were carried out. To coat pellets with erbium using this apparatus, we undertook preliminary experiments involving metal pellets. The adhesion test showed that the coated layer can be maintained at near fracture strength.
Nuclear fuel rod;3D printing technology;Direct metal tooling;Accident tolerant fuel;
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발전소 저탄장에 적용되는 풀코드스위치 부품의 구조최적화 3D 프린팅 제작기술 개발,이혜진;

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