UO₂ 소결체 형상 변경을 통한 chipping에 미치는 기계적 특성 영향 평가

최민영; 나연수; 정태식; 류수필; 이승재

추천

검색

질문

자료유형: 학술대회자료

저자정보: 최민영 (한전원자력연료) 나연수 (한전원자력연료) 정태식 (한전원자력연료) 류수필 (한전원자력연료) 이승재 (한전원자력연료)

저널정보: 대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2017년도 학술대회

발행연도: 2017.11

수록면: 2,787 - 2,792 (6page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

In pressurized water reactor (PWR), nuclear fuel rod comprises a pile of fuel pellet surrounded by a cladding. Sintered extensively uranium oxide and mixed oxide pellets are used as a nuclear reactor fuel. More advanced fuels are recently required for the more severe operating condition such as higher burn-up and increased fuel cycle. Among the advanced fuel pellet, Missing Pellet Surface (MPS) reduction pellet is considered recently. MPS predominantly extended to the pellet end. The fragment of fuel materials produced by such chipping may become trapped in the gap between the peripheral wall of the pellets and the cladding and increase the mechanical stress on the cladding, which can lead to local cladding failure due to pellet clad mechanical interaction (PCMI). To solve this problem, research is conducted on the modification of the fuel pellet shape such as dish and chamfer. In this study, the changed dish and chamfer of the nuclear fuel pellet are first simulated using Finite Element Method (FEM). From the simulated samples, the mechanical testing is performed to find the lowest percent defective of fuel pellets. Especially, the loadability test is performed to evaluate the chipping reduction performance of stacked fuel pellet behavior in the fuel rod.

#Missing pellet surface(MPS) #Fuel pellet(소결체) #Dish(디쉬) #Chamfer(챔퍼) #FEM(유한요소해석) #Loadability test

참고문헌 (0)

참고문헌 신청

참고문헌이 DBpia에서 서비스 중이라면, [참고문헌 신청]을 통해 등록해보세요

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!