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
recommended practice provides information on specific combustible dusts 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 are not intended to be all-inclusive.
1.1.3 This recommended practice also applies to chemical proce
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