中国散裂中子源涉放区域负压通风系统设计

Design of negative pressure ventilation systems for radiation area of CSNS

中国散裂中子源是国家"十一五"期间重点建设的十二大科学装置之首,是位于国际前沿的高科技、多学科应用的大型研究平台。该项目包括1个地下加速器隧道及靶站,在工艺设备运行期间有大量放射性物质产生。除了满足工艺设备对温湿度的要求外,还必须确保在工艺设备运行期间,涉放区域密闭且呈负压状态,涉放区域的空气经处理未满足排放标准前不得向外泄漏。介绍了该项目涉放区域通风设计要求及系统设计方案,为该类大型科学装置放射性空间的负压通风系统设计提供参考。

China Scattered Neutron Source(CSNS) is the first of the twelve major scientific devices to be built during the national Eleventh Five-Year Plan period, and is a high-tech, multidisciplinary, large-scale research platform located at the international forefront. The project includes an underground accelerator tunnel and a target station, where a large amount of radioactive material is generated during the operation of the process equipment. In addition to meeting the temperature and humidity requirements of the process equipment, it is important to ensure that the radiation area is sealed and under negative pressure during the operation of the process equipment, and that the air in the radiation area does not leak out until it has been treated to meet the emission standards. This paper presents the ventilation design requirements and system design scheme for the project, which provides a reference for the design of negative pressure ventilation systems for radioactive space of such large scientific installations.