A review on PAR operating characteristics and impact on hydrogen behaviors in containment of PWRs

IF 2.1 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Engineering and Design Pub Date : 2025-02-01 DOI:10.1016/j.nucengdes.2024.113806

Tianming Man , Youcai Feng , Xuhua Zhou , Zehua Guo , Ming Ding

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Abstract

Passive autocatalytic recombiners (PARs), owing to its excellent hydrogen removal capability and passive characteristic, have been widely utilized to prevent the potential hydrogen combustion risk in modern PWRs. The analysis of PAR operational characteristics has initially been conducted based on experimental investigations. Subsequently, it has gained the capability to comprehensively study the PAR operational behavior combing with the thermal–hydraulic characteristic and chemical reaction dynamics with the development in reaction kinetics models and advanced computing methods. It is significant to summarize the PAR development for improving the PAR operational behavior and mitigating the hydrogen combustion risk in the containment of PWRs. This paper summarized the operating principles and structural effects of PAR, the PAR operational behavior in various operating conditions, and the interaction between PARs and containment atmosphere in PWRs. Existing research provide substantial experimental and numerical simulation support for examining PAR operational behavior in the accident conditions. However, it remains necessary to conduct relevant researches to effectively use PAR for enhancing hydrogen risk mitigation capability in PWRs. Anticipated research includes improving PAR hydrogen removal capability, evaluating and enhancing PAR operational behavior in complex environments, and providing deeper insights for PARs impacts on the containment atmosphere in the future.

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PAR工作特性及其对压水堆安全壳内氢气行为的影响

被动自催化重组器（PARs）由于其优异的脱氢能力和被动特性，在现代压水堆中被广泛应用于防止潜在的氢燃烧危险。在实验研究的基础上，对PAR的工作特性进行了初步分析。随后，随着反应动力学模型和先进计算方法的发展，结合热水特性和化学反应动力学，获得了综合研究PAR运行行为的能力。总结PAR的发展对改善PAR的运行性能，降低压水堆安全壳内氢燃烧风险具有重要意义。本文综述了压水堆中PAR的工作原理和结构效应、PAR在不同工况下的运行行为以及PAR与安全壳大气的相互作用。现有的研究为研究PAR在事故条件下的运行行为提供了大量的实验和数值模拟支持。然而，为了有效地利用PAR来提高压水堆的氢风险缓解能力，仍有必要开展相关研究。预期的研究包括提高PAR的除氢能力，评估和增强PAR在复杂环境中的操作行为，以及为未来PAR对安全壳大气的影响提供更深入的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Engineering and Design 工程技术-核科学技术

CiteScore

3.40

自引率

11.80%

发文量

377

审稿时长

5 months

期刊介绍： Nuclear Engineering and Design covers the wide range of disciplines involved in the engineering, design, safety and construction of nuclear fission reactors. The Editors welcome papers both on applied and innovative aspects and developments in nuclear science and technology. Fundamentals of Reactor Design include: • Thermal-Hydraulics and Core Physics • Safety Analysis, Risk Assessment (PSA) • Structural and Mechanical Engineering • Materials Science • Fuel Behavior and Design • Structural Plant Design • Engineering of Reactor Components • Experiments Aspects beyond fundamentals of Reactor Design covered: • Accident Mitigation Measures • Reactor Control Systems • Licensing Issues • Safeguard Engineering • Economy of Plants • Reprocessing / Waste Disposal • Applications of Nuclear Energy • Maintenance • Decommissioning Papers on new reactor ideas and developments (Generation IV reactors) such as inherently safe modular HTRs, High Performance LWRs/HWRs and LMFBs/GFR will be considered; Actinide Burners, Accelerator Driven Systems, Energy Amplifiers and other special designs of power and research reactors and their applications are also encouraged.