Design of electrical feedouts for hard-core components in nuclear power plants

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

Nuclear Engineering and Design Pub Date : 2025-04-24 DOI:10.1016/j.nucengdes.2025.114088

Jorge Rafael González-Teodoro , Jordi Mena Bravo , Francisco de Asís Salguero Rodríguez

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Abstract

Hard-Core Components (HCCs) have become a key element in the defense-in-depth strategy for nuclear safety, particularly in scenarios involving extreme events such as seismic activity, fires, or total loss of power. This paper presents the conceptual design and qualification considerations for electrical feedouts—specifically, the penetrations that ensure the structural and functional integrity of power and signal transmission across containment barriers under severe conditions. The study emphasizes innovative design features such as bellows, service loops, and advanced fire barriers, which minimize the mechanical stress transmitted to containment walls and enhance system resilience. Through a combination of mechanical, thermal, and seismic design strategies, the proposed feedouts contribute to maintaining containment integrity and electrical functionality during beyond-design-basis events. This work constitutes a significant step forward in the development of reliable and qualified electrical penetrations as part of the HCC framework in modern nuclear facilities.

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核电厂硬核部件馈电设计

核心组件（HCCs）已成为核安全纵深防御战略的关键要素，特别是在涉及地震活动、火灾或完全断电等极端事件的情况下。本文介绍了电气馈电的概念设计和鉴定考虑因素，特别是确保在恶劣条件下穿越安全壳屏障的电力和信号传输的结构和功能完整性的穿透。该研究强调创新的设计特征，如波纹管、服务回路和先进的防火屏障，以最大限度地减少传递到密封墙的机械应力，增强系统的弹性。通过结合机械、热和抗震设计策略，建议的反馈有助于在超出设计基础的事件中保持容器的完整性和电气功能。作为现代核设施HCC框架的一部分，这项工作在开发可靠和合格的电穿透方面迈出了重要的一步。

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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.