Operational strategy and impact analysis of single train isolation in high pressure heater system for generation III pressurized water reactors

IF 2.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-09-28 DOI:10.1016/j.anucene.2025.111901

Xu Jiaoshen , Qin Ge , Li Dongyuan , Liu zhiyun , Wang Ming , Li Qiang

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引用次数: 0

Abstract

This study focuses on the single train isolation scenario in the High Pressure Heater system (AHP) of the HPR1000 reactor. A long-term operation strategy is proposed, which involves reducing the unit power to 92% of its rated capacity. To demonstrate the feasibility of this strategy and assess its safety impact, the impacts of AHP system isolation on operational parameters are analyzed based on the operational characteristics. Combined with multiple impacts on the reactor and phenomena observed in design basis conditions (DBCs), specific accident conditions requiring quantitative analysis are identified. Through quantitative evaluations and safety analysis results of related equipment, the feasibility of the operational strategy is demonstrated. The proposed strategy avoids reactor fallback and enhances operational economy. The methodology and conclusions provide technical references for similar scenarios in Generation III pressurized water reactor nuclear power plants.

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第三代压水堆高压加热系统单列隔离运行策略及影响分析

本研究主要针对HPR1000反应堆高压加热系统（AHP）的单列隔离方案进行研究。提出了将机组功率降低至额定容量92%的长期运行策略。为了论证该策略的可行性并评估其安全影响，根据运行特点，分析了AHP系统隔离对运行参数的影响。结合对反应堆的多重影响和在设计基础条件（DBCs）中观察到的现象，确定了需要定量分析的具体事故条件。通过对相关设备的定量评价和安全分析结果，论证了运行策略的可行性。该策略避免了反应堆回退，提高了运行经济性。该方法和结论可为第三代压水堆核电站的类似情况提供技术参考。

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

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.