(A) study on thermal/mechanical behaviors of low burnup FCM fuel = 저연소도 FCM 연료의 열적/기계적 거동에 관한 연구

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Fully Ceramic Microencapsulated (FCM) fuel which TRISO particles are dispersed in SiC matrix is evaluated to be able to dramatically improve the safety margin due to the high strength and thermal conductivity of the fuel materials. Since the effect of random particle distribution was not considered in most of modeling studies, a model for evaluating Thermal/Mechanical/Crack behaviors with random distribution of TRISO particle is developed. From the analysis results in PWR and SMR conditions, it is confirmed that the FCM fuel shows a symmetrical temperature/stress distribution in the FCM specification range of PF 40 to 50 % and kernel radius 300 to 400 microns. It is also confirmed that SiC matrix cracks are likely to be propagated form the inside of pellet rather than outside of pellet which is opposite tendency of $UO_2$ pellet. To reduce the possibility of crack propagation, high thermal conductivity kernel material such as UN should be used.
Advisors
Ryo, Ho Jinresearcher류호진researcher
Description
한국과학기술원 :원자력및양자공학과,
Publisher
한국과학기술원
Issue Date
2018
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 원자력및양자공학과, 2018.8,[vi, 65 p :]

Keywords

ATF▼aFCM▼aTRISO-SiC▼athermal/mechanical analysis▼acrack Analysis; ATF▼aFCM▼aTRISO-SiC▼a열/기계 해석▼a크랙 해석

URI
http://hdl.handle.net/10203/266547
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=828547&flag=dissertation
Appears in Collection
NE-Theses_Master(석사논문)
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