NFPA 497 化学工艺区易燃液体、气体、蒸气分类及电气安装危险性分类
日期:2012-02-09 16:42
y electrical systems or equipment.
1.1.2 This recommended practice provides information on specific flammable gases and vapors, flammable liquids, and combustible liquids whose relevant combustion properties have been sufficiently identified to allow their classification into the groups established by NFPA 70, National Electrical Code (NEC), for proper selection of electrical equipment in hazardous (classified) locations. The tables of selected combustible materials contained in this document a
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