Analysis of the drop dynamics of control rod assembly in a LBE-cooled research reactor

doi:10.1016/j.anucene.2020.107778

	Analysis of the drop dynamics of control rod assembly in a LBE-cooled research reactor
	Arthur, Emmanuel Maurice 1,3; Zhang, Chaodong 1; Debrah, Seth Kofi 2,3; Yamoah, Stephen 2,3; Wang, Lei 1
刊名	ANNALS OF NUCLEAR ENERGY
	2020-12-15
卷号	149
关键词	Lead-cooled fast reactor Lead-bismuth eutectic Control rod assembly Drop time Hydraulic resistance
ISSN号	0306-4549
DOI	10.1016/j.anucene.2020.107778
通讯作者	Wang, Lei(lei.wang@fds.org.cn)
英文摘要	The lead-based fast reactor is very attractive as one of the Generation-IV nuclear energy systems due to high-power density, heavy liquid metal coolants with a high boiling point as well as harmless interaction with air or water. Nuclear heat is generated from very high neutron flux that is regulated and controlled by the drop of the Control Rods (CRs) for safe operation. The resisting effect of the Lead Bismuth Eutectic (LBE) due to high density on the driving force of the CR Assembly (CRA) during the fall is crucial, which some delays may lead to unavoidable accidents. The mathematical approach has been applied to investigate the CRA dynamics of lead-based research reactor. The non-linear differential equations governing the motion of the CRA as well as the LBE flow have been ascertained to capture the pertinent parameters. Using the Fourth-Order Runge-Kutta iteration method, a computer program was developed with MATLAB and it can be used to calculate the drop time of the CRA and other important parameters described and presented in the study. Compared with the results of the experiment in the available literature, the program developed was proved to be applicable and reliable. The results showed that among the LBE flow characteristics, the density is the most influential parameter on the drop time and tends to have a positive relationship with the drop time. The total CRA mass contributes to the driving force of the CRA to reduce drop time when increased. Finally, the result of the theoretical model will serve as a basis to analyse the auxiliary mechanism and thus, help make informed choice on LBE flow parameters during modification to improve safety. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA22010504] ; BANGA-Africa under the UG-Carnegie Project
WOS关键词	DRIVE MECHANISM ; SAFETY ROD ; PERFORMANCE ; DESIGN
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000581278600022
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; BANGA-Africa under the UG-Carnegie Project
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/104811]
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Lei
作者单位	1.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Key Lab Neutron & Radiat Safety, Hefei 230031, Anhui, Peoples R China 2.Ghana Atom Energy Commiss, Nucl Power Inst, Box LG 80, Accra, Ghana 3.Univ Ghana, Sch Nucl & Allied Sci, Box LG 25, Legon, Accra, Ghana
推荐引用方式 GB/T 7714	Arthur, Emmanuel Maurice,Zhang, Chaodong,Debrah, Seth Kofi,et al. Analysis of the drop dynamics of control rod assembly in a LBE-cooled research reactor[J]. ANNALS OF NUCLEAR ENERGY,2020,149.
APA	Arthur, Emmanuel Maurice,Zhang, Chaodong,Debrah, Seth Kofi,Yamoah, Stephen,&Wang, Lei.(2020).Analysis of the drop dynamics of control rod assembly in a LBE-cooled research reactor.ANNALS OF NUCLEAR ENERGY,149.
MLA	Arthur, Emmanuel Maurice,et al."Analysis of the drop dynamics of control rod assembly in a LBE-cooled research reactor".ANNALS OF NUCLEAR ENERGY 149(2020).