核设施内设备室通风负压控制的实验研究

Experimental Study on Ventilation Negative Pressure Control in Equipment Rooms of the Nuclear Facilities

通风系统是核设施的重要组成部分,用于保护环境和操作人员免受空气中含有的放射性物质的危害。在分区布置的核设施中,保证不同区域间有序压力梯度是通风设计的关键,空气流动方向顺序应由非污染区到污染区,由低污染区到高污染区,其中对红区设备室的负压控制尤为重要。本文对核设施厂房中红区设备室在正常排风稳态工况及火灾工况下的负压控制开展实验研究,为该类房间的负压通风系统设计提供参考。

The ventilation system is an important component of nuclear facilities,which is used to protect the environment and operators from the hazards of radioactive substances contained in the air.Ensuring an orderly pressure gradient between different areas is key to ventilation design in partitioned nuclear facilities.The order of air flow direction should be from non polluted areas to polluted areas,and from low pollution areas to high pollution areas.The negative pressure control of the equipment room in the red zone is particularly important.This article conducts experimental research on negative pressure control of the red zone equipment rooms in nuclear facility buildings under normal exhaust steady-state conditions and fire conditions,providing reference for the design of negative pressure ventilation systems in such rooms.