【英文标准名称】:(Draft)(Withdrawn)(DRAFT)ULStandardforSafetyforTestsofFireResistiveGreaseDuctEnclosureAssemblies
【原文标准名称】:(草案)(撤回)(草案)油脂输送管外户套配件耐火试验的UL安全性标准
【标准号】:UL2221BULLETINS-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001-07-31
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1Thesetestsareintendedtodeterminethefireresistanceofgreaseductenclosureassemblies.Theserequirementslimitthecombustibility,thesurfaceflammability,andthesmokegenerationpotentialofthecoveringsusedtoenclosethegreaseduct.Inaddition,theserequirementsevaluatetheeffectivenessofthecombinationofthegreaseductandtheenclosureasafireratedenclosuresystemandthroughpenetrationfirestopsystem,aswellastheenclosure''seffectonthegreaseduct.1.2Thefireenduranceratingsforgreaseductenclosureassembliesareintendedtoregisterperformanceduringtheperiodoffireexposureandarenotintendedtobeinterpretedashavingdeterminedtheacceptabilityofthegreaseductassemblyforusebeforeorafterfireexposure.Theintentofthesemethodsistodevelopdatatoassistothersindeterminingthesuitabilityofthegreaseductassemblywherefireresistanceisrequired.1.3Theserequirementsareintendedtoevaluatetheabilityofgreaseductenclosureassembliesspecifiedin1.1tocontainaninternalfireorrepelanexternalfireduringpredeterminedtestexposures.Thetestevaluatesthegreaseductassembly'sresistancetofire,heat,andtoahosestream.1.4RequirementscoveringtheconstructionandperformancerequirementsofproprietarygreaseductsarecontainedintheStandardforGreaseDucts,UL1978.Allducts,bothproprietaryandnon-proprietary,shallcomplywithinstallationrequirementsoftheStandardforVentilationControlandFireProtectionofCommercialCookingOperations,NFPA96,andtheInternationalMechanicalCode.1.5Undertheserequirementsagreaseductenclosureassemblyissubjectedtostandardinternalandexternalfireexposurescontrolledtoachievespecifiedtemperaturesthroughoutaspecifiedtimeperiod.1.6Duringtheinternalfireexposure,oneoftwoinstallationconditionmethodsistobeselectedtomeasuretemperaturesnearoronthesurfaceofthegreaseductenclosurematerialawayfromthegreaseduct.Onemethodoftemperaturemeasurementisintendedforallinstallationsexceptforinstallationswithinnon-ventilatedcombustibleenclosures.Thesecondmethodoftemperaturemeasurementisintendedforinstallationswithinnon-ventilatedcombustibleenclosures.1.7Theseexposuresbythemselvesarenotintendedtoberepresentativeofallfireconditions;conditionsvarywithchangesintheamount,nature,anddistributionoffireloading,ventilation,compartmentsizeandconfiguration,andheatsinkcharacteristicsofthecompartment.1.8Theserequirementscoverthemeasurementofthetransmissionofheatthroughthegreaseductassemblyandthepassageofheatandgaseshotenoughtoignitecottonwaste.1.9Theserequirementsprovidearelativemeasureoffireperformanceunderthesespecifiedfireexposureconditions.Anyvariationfromtheconstructionorconditionsthataretested,suchasmethodofassemblyandmaterials,isnotwithinthescopeofthistestmethod.1.10Theresultsofthesetestsrepresentonefactorinassessingfireperformanceofgreaseductassemblies.Theserequirementsprescribestandardfireexposuresforassessingtheperformanceofgreaseductassemblies.Applicationofthesetestresultstopredicttheperformanceofactualbuildingconstructionrequirescarefulevaluationoftestdata.
【中国标准分类号】:P94
【国际标准分类号】:91_140_30
【页数】:14
【正文语种】:英语
基本信息
| 标准名称： | 凿岩机械与气动工具 压铸镁合 |
| 中标分类： |
机械 >>
通用机械与设备 >>
凿岩机械 |
| 替代情况： | 被JB/T 5133-2006代替 |
| 发布部门： | 天水凿岩机械气动工具研究所 |
| 发布日期： | 1991-05-18 |
| 实施日期： | 1992-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2007-07-01 |
| 归口单位： | 天水凿岩机械气动工具研究所 |
| 出版社： | 机械工业出版社 |
| 出版日期： | 1992-01-01 |
| 页数： | 10 页 |
| 批文号： | 机电科标[1991]849号 |
适用范围
本标准规定了凿岩机械与气动工具压铸镁合金铸件的类别及级别、基本尺寸、公差等级、理化检验、铸造斜度、压铸螺纹、形状及位置公差等通用要求。 本标准适用于凿岩机械与气动工具压铸镁合金铸件。
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所属分类： 机械 通用机械与设备 凿岩机械