To overcome the low mechanical strength and corrosion behavior of a carbon steel canister at high temperature condition of a deep borehole, SiC ceramics were studied as an alternative material for the disposal canister. In this paper, a design concept for a SiC canister, along with an outer stainless steel container, was proposed, and its manufacturing feasibility was tested by fabricating several 1/3 scale canisters. The proposed canister can contain one PWR assembly. The outer container was also prepared for the string formation of SiC canisters. Thermal conductivity was measured for the SiC canister. The canister had a good thermal conductivity of above 70 W·m-1·K-1 at 100℃. The structural stability was checked under KURT environment, and it was found that the SiC ceramics did not exhibit any change for the 3 year corrosion test at 70℃. Therefore, it was concluded that SiC ceramics could be a good alternative to carbon steel in application to deep borehole disposal canisters.

1. 서론
 2. 선행 연구
 3. 심부시추공 처분용기의 설계
  3.1 심부시추공 처분용기의 기본개념
  3.2 심부시추공 처분용기의 설계 조건
  3.3 SiC 기밀용기의 설계
  3.4 스테인리스 금속용기의 설계
 4. 처분용기의 제작과 특성
  4.1 SiC 용기 제작
  4.2 SiC 용기의 성능분석
 5. 결론
 REFERENCES

• Sunghoon JI(한국원자력연구원) | 지성훈
• MalGoBalGaeBitNaLa YOO(한국원자력연구원) | 유맑고밝게빛나라
• Heuijoo CHOI(한국원자력연구원) | 최희주
• Jongyoul LEE(한국원자력연구원) | 이종열
• Minsoo LEE(한국원자력연구원) | 이민수 Corresponding Author