【英文标准名称】:RecommendedPracticefortheClassificationofCombustibleDustsandofHazardous(Classified)LocationsforElectricalInstallationsinChemicalProcessAreas
【原文标准名称】:化学品加工区域中电气装置用易燃粉尘和危险区域的分类的推荐实施规程
【标准号】:ANSI/NFPA499-2008
【标准状态】:作废
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:化学设备;电驱动装置;安全工程;安全要求
【英文主题词】:Chemicalequipment;Electrically-operateddevices;Safetyengineering;Safetyrequirements
【摘要】:Thisrecommendedpracticeappliestothoselocationswherecombustibledustsareproduced,processed,orhandled,andwheredustreleasedintotheatmosphereoraccumulatedonsurfacescouldbeignitedbyelectricalsystemsorequipment.ThisrecommendedpracticeprovidesinformationonspecificcombustibledustswhoserelevantcombustionpropertieshavebeensufficientlyidentifiedtoallowtheirclassificationintothegroupsestablishedbyNFPA70,NationalElectricalCode(NECr),forproperselectionofelectricalequipmentinhazardous(classified)locations.Thetablesofselectedcombustiblematerialscontainedinthisdocumentarenotintendedtobeall-inclusive.Thisrecommendedpracticealsoappliestochemicalprocessareas.Asusedinthisdocument,achemicalprocessareacouldbeachemicalprocessplant,oritcouldbeapartofsuchaplant.Achemicalprocessareacouldbeapartofamanufacturingfacilitywherecombustibledustsareproducedorusedinchemicalreactions,orarehandledorusedinoperationssuchasmixing,coating,extrusion,conveying,drying,and/orgrinding.Thisrecommendedpracticedoesnotapplytoagriculturalgrain-handlingfacilitiesexceptwherepowderedgrainisusedinachemicalreactionormixture.Thisrecommendedpracticedoesnotapplytosituationsthatcouldinvolvecatastrophicfailureof,orcatastrophicdischargefrom,silos,processvessels,pipelines,tanks,hoppers,orconveyingorelevatingsystems.Thisrecommendedpracticedoesnotapplytooxygen-enrichedatmospheresorpyrophoricmaterials.
【中国标准分类号】:C66;G09
【国际标准分类号】:13_300;29_260_20
【页数】:
【正文语种】:英语