제4세대 원자로 중간열교환기-일체형 증기발생기의 고온 설계 및 건전성 평가 = High-Temperature Design and Integrity Evaluation of a IHX-Combined Steam Generator in Generation IV Reactor

다국어 초록 (Multilingual Abstract)

An innovative IHX-combined steam generator (ICSG) concept was proposed for application in a Generation IV sodium-cooled fast reactor. The feasibility in terms of mechanical design was investigated through high-temperature integrity evaluation of the ICSG design. A novel configuration with M-shaped serpentine tubes was adopted for the ICSG (S-ICSG) through thermal-hydraulic design, and integrity evaluation was conducted. Because this component operates at a high temperature in the creep range, elevated temperature design evaluations were conducted according to the French high-temperature design rule of RCC-MRx based on 3D finite element temperature and stress analysis. All relevant requirements in RCC-MRx were satisfied and the new innovative ICSG design with serpentine tubes was feasible from viewpoint of mechanical design.

국문 초록 (Abstract)

본 연구에서는 제4세대 원자로인 소듐 냉각고속로에 적용하고자 하는 중간열교환기 일체형 증기발생기(ICSG)의 구조 개념을 도출하고, 동 설계에 대해 고온 건전성 평가를 통해 구조적 구현 가능성을 분석하였다. ICSG는 열유체 설계를 통해 M자형(serpentine) 튜브 형상으로 설계되었고 동 전열관 형상을 갖는 새로운 개념의 증기발생기 구조에 대해 건전성 평가를 수행하였다. 동 기기는 크리프 영역의 고온에서 가동되기 때문에 3D 유한요소 해석 기반 온도 및 응력 해석을 수행하고 프랑스의 고온 설계 기술 기준인 RCC-MRx를 따라 건전성 평가를 수행하였다. 평가 결과, M자형 튜브를 채택한 신개념 ICSG는 모든 설계 기술 기준의 요건을 만족하여 기계구조적으로 구현 가능한 구조인 것으로 나타났다.

참고문헌 (Reference)

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