采用线性拟合分析模型，提高了恒压法容器泄漏率的稳定性

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-04-21 DOI:10.1016/j.anucene.2025.111499

Li Jianfa , Chen Guangheng , Cong Jidong , Lou Taishan , Meng Zhaoming

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引用次数: 0

摘要

恒压法测量核电站安全壳泄漏率具有试验过程简单、试验周期短、结果可靠等优点，在高泄漏、低压核电站环境下具有重要意义。因此，研究大空间安全壳泄漏率的恒压法具有重要意义。为了探索更稳定的安全壳泄漏率恒压分析方法，本研究采用线性拟合分析模型建立了安全壳泄漏率计算的理论模型。本研究采用多种不同体积的安全壳模拟体进行了实验验证和应用研究，并对线性拟合法和均值分析法计算的泄漏率数据进行了比较。结果表明，线性拟合方法的泄漏率波动比减小51%，不确定性减小87%。研究证实，线性拟合方法稳定性好，可靠性高，对环境的敏感性低。基于以上优点，本研究提出的线性拟合分析模型可以进一步支持恒压法测量安全壳泄漏率的工程应用。

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Improves the stability of containment leakage rate in constant pressure method by linear fitting analysis model

The constant pressure method for measuring the leakage rate of containment in nuclear power plants is of great significance in high leakage and low-pressure plant environments for its simple testing process, short testing period and high reliable results Therefore, conducting research on the constant pressure method for measuring the leakage rate of containment in large spaces is of great significance. In order to explore a more stable constant pressure method for analyzing the leakage rate of containment, this study develops a theoretical model for calculating the leakage rate of containment by using the Linear fitting analysis model. In the study, many different volumes of containment vessel simulation bodies are used for experimental verification and application research, and the leakage rate data calculated by linear fitting method and mean analysis method are compared. Results show that the leakage rate fluctuation ratio of the Linear fitting method decreases by 51%, and the uncertainty decreases by 87%. Research has confirmed that the Linear fitting method has good stability, high reliability, and low sensitivity to the environment. Based on above advantages, the Linear line fitting analysis model proposed in this study can further support the engineering application of the constant pressure method for measuring the leakage rate of containment.

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.