Finite element analysis of the main reactor vessel in the China Initiative Accelerator Driven System

Wang, Di -SiFudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China. (author)

QC 20230412
The China Initiative Accelerator Driven System (CiADS) was proposed by China Academy of Science since 2015. The reactor in CiADS is a subcritical fast neutron reactor cooled by a liquid lead-bismuth eutectic. The reactor operates at high temperature and bears high thermal stress. In addition to the heavy weight of the whole reactor, the vessel will bear large effective stress. If the effective stress exceeds the limit of the material, defects and cracks may occur on the main reactor vessel, which will affect the safety performances of the reactor. Therefore, it is very important to analyze the effective stress field of the reactor vessel. In this paper, the finite element analysis software ADINA was applied to analyze the reactor vessel in CiADS. We can preliminarily prove that the maximum effective stress that the vessel will bear during the postulated Unprotected Loss of Flow (ULOF) and Unprotected Transient over Power (UTOP) accidents is less than the yield strength of 316L stainless steel. Therefore, we can preliminarily conclude that the current ma-terial selection and structural design of the CiADS vessel could survive the postulated transient accidents considering the effective stress effect.

Li, SongFudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China. (author)
Zhang, You -PengFudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China. (author)
Liu, BoFudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China. (author)
Gu, LongLanzhou Univ, Inst Nucl Sci & Technol, Lanzhou 730000, Peoples R China.;Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China. (author)
Zhang, LuChinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China. (author)
Jiang, WeiChinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China. (author)
Wallenius, Janne,1968-KTH,Kärnkraftssäkerhet(Swepub:kth)u1n5mh86 (author)
Fudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China.Lanzhou Univ, Inst Nucl Sci & Technol, Lanzhou 730000, Peoples R China.;Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China. (creator_code:org_t)

By the author/editor: Wang, Di -Si; Li, Song; Zhang, You -Peng; Liu, Bo; Gu, Long; Zhang, Lu; show more...; Jiang, Wei; Wallenius, Janne ...; show less...

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