CARR堆反应堆厂房通风系统设计

Design of Ventilation System of Reactor Building for CARR Engineering

参考规范要求及德国FRMⅡ反应堆的设计经验,并根据各房间的污染程度和人员停留情况,经辐射防护计算,综合确定了反应堆厂房各工艺间通风换气次数。厂房通风系统采用了直流式,系统按层划分,每层设一套通风及空气净化系统。在穿过操作大厅密封边界的通风管道上冗余设置密闭式快速隔离阀,保证在厂房密封性试验压力(12.5kPa)作用下其内外泄漏率均为0,以确保在反应堆事故工况下,放射性物质不致通过通风系统贯穿件泄漏到外部空间。系统设计采用了钢制直连式(或联轴器)风机以及不锈钢整体式空气净化装置。

The ventilation rate of the reactor building is determined by the calculation results of radiation protection, which has referred to the demands of code, the experience of German FRMII reactor designing, and the pollution level as well as the personnel residence of each room. Direct ventilation system is used in the reactor building, and each storey has a separate ventilation and air cleaning system. Airtight quick isolation valves, of which the in-out-leakage rate is 0 under the reactor building tightness test pressure （12.5kPa）, are set on the air ducts which through the sealing boundary of operating hall. This measure can guarantee the radioactive matters against leaking into outside spaces through the ventilation ducts during accident conditions of the reactor. Direct-connected steel fans and integral stainless steel air cleaning equipments are chosen in the system designing.