Research on Initiating Events Analysis of Small Helium-Xenon Gas Cooled Nuclear Reactor

Jun Zhou, Jianhui Wu, Yong Cui, Hongkai Zhao, Chunyan Zou () and Jingen Chen ()
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Jun Zhou: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Jianhui Wu: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Yong Cui: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Hongkai Zhao: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Chunyan Zou: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Jingen Chen: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

Energies, 2023, vol. 16, issue 19, 1-14

Abstract: Initiating event analysis is an essential prerequisite of conducting probabilistic safety assessment for nuclear reactors, which plays an important role in improving the core design, identifying fault, and guiding operation. In order to determine the initiating event list of SIMONS (Small Innovative helium-xenon cooled Mobile Nuclear power System), preliminary researches on the initial event of SIMONS were carried out using the MLD (Main Logic Diagram) analysis method and referring to the initial event list and initial event analysis theory of other nuclear reactors such as HTGR (High Temperature Gas-cooled Reactor), MSR (Molten Salt Reactor), and PWR (Pressurized water reactor). With employing these methods, a total of 31 initial events are identified for SIMONS based on its latest conceptual design. These initial events are then divided into six groups according to the accident types, which are core heat removal increase, core heat removal decrease, abnormal reactivity and power distribution, pipeline crevasse and equipment leakage, anticipated transients without scram, and disasters (internal and external). The obtained results can provide a theoretical basis for the further safety analysis of SIMONS.

Keywords: helium-xenon gas cooled nuclear reactor; probabilistic safety assessment; initiating event (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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