Optimization of Placement of Continuous Air Monitors in a Radiological Facility

IF 2 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Aerosol Science and Engineering Pub Date : 2024-11-15 DOI:10.1007/s41810-024-00268-y

Joy Chakraborty, M. K. Sureshkumar, M. Joshi, S. Anand, M. S. Kulkarni

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引用次数: 0

Abstract

The airborne concentration of radioactive materials in radiological facilities is primarily influenced by the ventilation system, air purification system, and emission sources. Continuous Air Monitors (CAMs) are installed in these facilities to monitor the activity concentration of radioactive aerosols during both routine operations and any malfunctioning conditions. Typically, CAM placement is determined by the direction of maximum airflow. However, aerosols do not always adhere to the behaviour of airstreams, raising concerns about the suitability of CAM placement. To address this issue, this study employs software that integrates aerosol dynamics with computational fluid dynamics to calculate the CAM Placement Parameter. This parameter is derived from the peak aerosol concentration and the lag time to reach the specified CAM location, indicating the relative merit of positioning CAMs in a radiological facility under varying ventilation rates. The findings suggest that the coupled aerosol-fluid dynamics model accurately predicts the optimal placement of CAMs in workplace environments, thereby minimizing occupational exposure.

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放射设施中连续空气监测仪的优化安置

辐射设施中放射性物质的空气浓度主要受通风系统、空气净化系统和排放源的影响。这些设施安装了连续空气监测仪（CAMs），以监测在日常操作和任何故障情况下放射性气溶胶的活动浓度。通常，凸轮的位置是由最大气流的方向决定的。然而，气溶胶并不总是遵循气流的行为，这引起了人们对CAM放置的适用性的关注。为了解决这一问题，本研究采用了将气溶胶动力学与计算流体动力学相结合的软件来计算凸轮放置参数。该参数由峰值气溶胶浓度和到达指定CAM位置的滞后时间推导而来，表明在不同通风率的辐射设施中定位CAM的相对优点。研究结果表明，耦合气溶胶-流体动力学模型可以准确地预测cam在工作环境中的最佳位置，从而最大限度地减少职业暴露。

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

Aerosol Science and Engineering Environmental Science-Pollution

CiteScore

3.00

自引率

7.10%

发文量

期刊介绍： ASE is an international journal that publishes high-quality papers, communications, and discussion that advance aerosol science and engineering. Acceptable article forms include original research papers, review articles, letters, commentaries, news and views, research highlights, editorials, correspondence, and new-direction columns. ASE emphasizes the application of aerosol technology to both environmental and technical issues, and it provides a platform not only for basic research but also for industrial interests. We encourage scientists and researchers to submit papers that will advance our knowledge of aerosols and highlight new approaches for aerosol studies and new technologies for pollution control. ASE promotes cutting-edge studies of aerosol science and state-of-art instrumentation, but it is not limited to academic topics and instead aims to bridge the gap between basic science and industrial applications. ASE accepts papers covering a broad range of aerosol-related topics, including aerosol physical and chemical properties, composition, formation, transport and deposition, numerical simulation of air pollution incidents, chemical processes in the atmosphere, aerosol control technologies and industrial applications. In addition, ASE welcomes papers involving new and advanced methods and technologies that focus on aerosol pollution, sampling and analysis, including the invention and development of instrumentation, nanoparticle formation, nano technology, indoor and outdoor air quality monitoring, air pollution control, and air pollution remediation and feasibility assessments.