Special Issue
  • A Review of SiCf/SiC Composite to Improve Accident-Tolerance of Light Water Nuclear Reactors
  • Daejong Kim*†, Jisu Lee*,**, Young Bum Chun*, Hyeon-Geun Lee*, Ji Yeon Park*, Weon-Ju Kim*

  • * Materials Safety Technology Development Division, Korea Atomic Energy Research Institute
    ** Division of Materials Science and Engineering, Hanyang University

  • 원자력 사고 안전성 향상을 위한 SiCf/SiC 복합소재 개발 동향
  • 김대종*† · 이지수*,** · 천영범* · 이현근* · 박지연* · 김원주*

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


SiC fiber-reinforced SiC matrix composite is a promising accident-tolerant fuel cladding material to improve the safety of light water nuclear reactors. Compared to the current zirconium alloy fuel cladding as well as metallic accident-tolerant fuel cladding, SiC composite fuel cladding has exceptional accident-tolerance such as excellent structural integrity and extremely low corrosion rate during severe accident of light water nuclear reactors, which reduces reactor core temperature and delays core degradation processes. In this paper, we introduce the concept, technical issues, and properties of SiC composite accident-tolerant fuel cladding during operation and accident scenarios of light water nuclear reactors

SiC 섬유강화 복합체는 경수형 원자로의 안전성을 획기적으로 향상시킬 수 있는 사고저항성 핵연료 피복관 소재이다. 지르코늄 합금 피복관 및 금속기반 사고저항성 핵연료 피복관에 비해, 중대 사고 환경에서도 우수한 구조적 안정성을 가지고 부식 속도가 매우 낮아, 사고 시 원자로의 온도를 낮추고 사고 진행을 늦출 수 있다. 본 논문에서는 현재 개발되고 있는 사고저항성 SiC 복합체 핵연료 피복관의 개념 및 가동/사고환경에서의 다양한 특성, 상용화를 위해 해결해야 할 다양한 이슈에 대해서 소개하고자 한다

Keywords: 탄화규소(Silicon carbide), 복합체(Composite), 화학기상침착(Chemical vapor infiltration), 원자력(Nuclear), 사고저항성 핵연료 피복관(ATF cladding)

This Article

Correspondence to

  • Daejong Kim
  • Materials Safety Technology Development Division, Korea Atomic Energy Research Institute

  • E-mail: dkim@kaeri.re.kr