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Development of Innovative Light Water Reactor Nuclear Fuel Using 3D Printing Technology

3 차원 프린팅 기술을 이용한 신개념 경수로 핵연료 기술 개발에 관한 연구

Kim, Hyo Chan;Kim, Hyun Gil;Yang, Yong Sik
김효찬;김현길;양용식

  • Received : 2016.02.25
  • Accepted : 2016.03.21
  • Published : 2016.04.01

Abstract

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.

Keywords

Nuclear fuel rod;3D printing technology;Direct metal tooling;Accident tolerant fuel

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Acknowledgement

Supported by : 한국에너지기술평가원(KETEP)