A comparison study between the present air cleaning unit of main control room of AP1000 and its replacement design

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Annals of Nuclear Energy Pub Date : 2024-11-14 DOI:10.1016/j.anucene.2024.111060

Xiaochen Li , Jian Li , Yuan Zhang, Yongguo Li, Kunjun Wang, Jianlu Pei, Xin Li, Xu Shi, Dongan Zhi, Xin Chen, Mang Wang, Jingguo Liu

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Abstract

The inleakage of the radioactivity caused by ingress/egress could reduce the habitability of the main control room for the operators under the accident conditions. This study used the concentration-decay method to measure the air inleakage caused by ingress/egress, and based on this point, theoretical calculations of the radioactivity in the vestibule and the main control room were conducted to clarify the air cleaning effect. The results showed that: The measured air inleakage induced by each ingress/egress ranged from 0.273 m³ to 1.818 m³ at different opening speed and degree of the door. Compared with the present internal recycle air cleaning unit of main control room of AP1000, we recommended a design which can remove the radioactivity incurred from ingress/egress more effectively and rapidly. Therefore, to reduce the radiation risk of operators in main control room at designed basic accidents, the implementation of replacement is proposed as soon as possible.

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AP1000 主控室现有空气净化装置与替代设计的比较研究

在事故情况下，出入口造成的放射性渗漏会降低主控制室对操作人员的适用性。本研究采用浓度衰减法测量了出入口造成的空气渗漏，并在此基础上对前庭和主控室的放射性进行了理论计算，以明确空气净化效果。结果表明在不同的开门速度和程度下，每个出入口引起的实测漏风量从 0.273 立方米到 1.818 立方米不等。与目前 AP1000 主控室的内部循环空气净化装置相比，我们建议采用一种能更有效、更快速地清除进/出口产生的放射性的设计。因此，为降低主控室操作人员在设计基本事故时的辐射风险，建议尽快实施更换。

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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.