AUTHOR=Xinyu Dai , Ming Yang , Jipu Wang , Zhihui Xu , Hanguan Wen 

TITLE=Methodology for updating GO-FLOW model to handle scenario changes in nuclear power plants

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 10 - 2022

YEAR=2023

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.1034835

DOI=10.3389/fenrg.2022.1034835

ISSN=2296-598X

ABSTRACT=The design of a nuclear power plant is proved to be safe enough in various hypothetical operation scenarios after strict safety assessment. One of the important tasks of operational risk management in a nuclear power plant is to evaluate whether any configuration change of the nuclear power plant can still achieve its expected safety and economic goals. This paper proposes a system reliability modeling and analysis method based on two-layers hierarchical GO-FLOW model. By flexibly adjusting the parameters of a GO-FLOW model, the model can adapt to the changes of success criteria and various configuration of the modeled system, thus avoiding the extra workload brought by re modeling and improving the efficiency of risk management in nuclear power plants.