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
praying, and distillation.
1.1.4 This recommended practice does not apply to situations that could involve catastrophic failure of or catastrophic discharge from process vessels, pipelines, tanks, or systems.
1.1.5 This recommended practice does not address the unique hazards associated with explosives, pyrotechnics, blasting agents, pyrophoric materials, or oxygen-enriched atmospheres that might be present.
Trust the 2008 NFPA 497 to help you perform accurate hazardous (classified) area cla
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