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
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Revision to the Annex B example on determining the maximum experimental safe gap and NEC group classification for mixtures
Make sure you have the up-to-date knowledge you need to properly select and install electrical equipment so it will not be an ignition source in environments where flammable or combustible liquids, gases, or vapors are processed or handled. Order the 2008 NFPA 497 today. (Softbound, 63 pp., 2008)
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