喷漆通风工艺与职业安全卫生

典型的喷漆工艺系统包括喷漆室、通风装置和气体净化设备。其中合理的通风工艺系统 (包括通风装置和气体净化装置 )则是降低系统中有机蒸汽浓度 ,防止火灾爆炸及中毒事故发生的重要环节。通过对喷漆系统燃爆事故的事故树分析 ,可清晰地看出通风工艺系统各基本事件对燃爆事故的影响程度。就控制有机溶剂可燃气体浓度而言 ,从防止职业病危害角度计算的通风量虽然足以保证系统的安全通风 ,但从安全角度考虑 ,还须有良好的接地技术和防爆装置 ,以及安装浓度、温度检测报警装置。

Ventilation Technique with Occupational Safety and Health in Spray Paint

The typical spray paint technology system should include spray chamber, ventilation installation and gas-cleaning facility. Because organic solvents exist in every part of the system during the process of production, therefore, the dangers of fire and explosion exist. In the pre-assessment work of professional security hygiene on spray paint system, the fault tree method was adopted for overall analysis of factors causing fire and explosion accidents. This fault tree model and it's computational method were used for analyzing the important degrees of the structures of 15 minimum cut sets, and for determining the basic event exerting maximum influence on culminant event. As for the controlling of density of combustible matters, the ventilation techniques are different for preventing occupational poisoning and for preventing fire and explosion accidents, and the ventilation quantity calculated for satisfying sanitary conditions could guarantee the safe ventilation quantity of the system. As for the equipment safety of the system, it should take the application of sound earthing technique and explosion-proof equipment, as well as installation density and defect and alarm devices of temperature into consideration. The analytical method used in this article is likewise suitable for the production processes of shoe-making, printing, tin plate printing and can making, etc. where the solvents being used.