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http://dx.doi.org/10.1016/j.net.2020.08.019

Finite element analysis of high-density polyethylene pipe in pipe gallery of nuclear power plants  

Shi, Jianfeng (Institute of Process Equipment, Zhejiang University)
Hu, Anqi (Institute of Process Equipment, Zhejiang University)
Yu, Fa (Chinaust Group Corporation)
Cui, Ying (Chinaust Group Corporation)
Yang, Ruobing (China Nuclear Power Engineering Co., Ltd.)
Zheng, Jinyang (Institute of Process Equipment, Zhejiang University)
Publication Information
Nuclear Engineering and Technology / v.53, no.3, 2021 , pp. 1004-1012 More about this Journal
Abstract
High density polyethylene (HDPE) pipe has many advantages over metallic pipe, and has been used in non-safety related application for years in some nuclear power plants (NPPs). Recently, HDPE pipe was introduced into safety related applications. The main difference between safety-related and non-safety-related pipes in NPPs is the design method of extra loadings such as gravity, temperature, and earthquake. In this paper, the mechanical behavior of HDPE pipe under various loads in pipe gallery was studied by finite element analysis (FEA). Stress concentrations were found at the fusion regions on inner surface of mitered elbows of HDPE pipe system. The effects of various factors were analyzed, and the influence of various loads on the damage of HDPE pipe system were evaluated. The results of this paper provide a reference for the design of nuclear safety-related Class 3 HDPE pipe. In addition, as the HDPE pipes analyzed in this paper were suspended in pipe gallery, it can also serve as a supplementary reference for current ASME standard on Class 3 HDPE pipe, which only covers the application for buried pipe application.
Keywords
High density polyethylene pipe; Nuclear power plant; Seismic load;
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