NFPA 499 化学工艺区易燃粉尘的分类及电气安装危险性分类推荐做法
日期:2012-02-09 16:43
NFPA 499 Recommended Practice for the Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas
NFPA 499 化学工艺区易燃粉尘的分类及电气安装危险性分类推荐做法
1.1 Scope.
1.1.1 This recommended practice applies to those locations where combustible dusts are produced, processed, or handled, and where dust released into the atmosphere or accumulated on surfaces could be ignited by electrical systems or equipment.
1.1.2 This
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