北美爆炸性危险场所新分类方法介绍

Introduction on New Classification Method for North American Explosion Hazardous Areas

简要介绍了一种通过对释放源、各种影响因素(包括可燃物质性质、释放源性质、点燃源性质、系统运行模式和环境因素)以及它们对危险区域危险等级和范围大小的作用的列举、分析和量化的处理,使之可以对危险区域对号入座式地进行分类、分级及范围的确定。这样,就大大提高了危险场所分类的客观性和可操作性,并举例予以说明。

Release source, including the nature of flammable substances, the characters of the release sources, the characters of the ignition resources, mode of the systems operation and the environmental factors are the essential factors affected to the classification of the hazardous areas. The author summarizes the affection of these factors to the risk level of hazardous areas and the size of the classified locations with some examples by the analyses and quantification, In this way, it is simplified to the classification of hazardous areas in practices and it is very helpful to proper categorization and grouping and deterruination of the size of the different divisions/zones. Thus, it makes the classification of the hazardous areas objective and practice.