인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
The study of Accident Tolerant Fuels (ATFs) has gained significant attention due to their potential to enhance the safety and reliability of nuclear reactors, especially under severe accident conditions. This work investigates the neutron-physical performance of ATF concepts in Light Water Reactor (LWR) using spectral shift regulation (SSR). The SSR mechanism, which adjusts the moderator-to-fuel ratio, by means of mechanical displacers that run in the guide tubes, enables spectral hardening during the initial cycle and softening toward the end, optimizing fuel utilization and reactor safety. Using collision probability method with the GETERA simulation tool and BNAB library, this study evaluates various ATF designs, including chromium-coated zirconium (CrZry), FeCrAl alloys, and SiC composites, combined with uranium silicide (U 3 Si 2 ) and uranium nitride (UN) high density fuels. Key metrics such as infinite multiplication factor, nuclide inventory, and plutonium buildup are analyzed. Results demonstrate that SiC cladding paired with UO 2 or U 3 Si 2 fuels offers the best neutronic characteristics, requiring slightly lower uranium enrichment. Thin FeCrAl cladding, on the other hand, shows higher enrichment needs but still around enrichment level of the fuel in Light Water Reactors, when paired with combination with U 3 Si 2 . The integration of SSR in the LWR reactor improves burn-up efficiency while burning produced plutonium and lower natural uranium consumption, resulting in reduced waste. Among the ATF options studied, SiC cladding shows good promise for guide tube and displacer applications, due to their neutron transparency and thermal stability.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
최근 본 자료 전체보기
