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【英文标准名称】:ULStandardforSafetyResidentialPipeHeatingCable
【原文标准名称】:住宅用管道加热电缆UL安全性标准
【标准号】:UL2049BULLETIN-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007-02-23
【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】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1Thesetestsareapplicabletojointsystemsofvariousmaterialsandconstructionthatareintendedforuseinlinearopeningsbetweenadjacentfireresistivestructures.1.2Thefireenduranceratingsforjointsystemsareintendedtoregisterperformanceduringtheperiodoffireexposureandarenotintendedtobeinterpretedashavingdeterminedtheacceptabilityofthejointsystemsforusebeforeorafterfireexposure.Theintentofthesemethodsistodevelopdatatoassistothersindeterminingthesuitabilityofthejointsystemswherefireresistanceisrequired.1.3Theserequirementsareintendedtoevaluatethelengthoftimethatthetypesofjointsystemsspecifiedin1.1willcontainafireduringapredeterminedtestexposure.Thetestevaluatesthejointsystem'sresistancetoheatand,insomeinstances,toahosestream,whilecarryinganappliedloadiftheassemblyisloadbearing.Themethodoftestingalsoincludesoptionalairleakageteststodeterminetherateofairleakagethroughjointsystemsresultingfromaspecifiedairpressuredifferenceappliedacrossthesurfaceofthejointsystems.1.4Undertheserequirementsajointsystemissubjectedtoastandardfireexposurecontrolledtoachievespecifiedtemperaturesthroughoutaspecifiedtimeperiod.Thisexposurebyit
【中国标准分类号】:K13
【国际标准分类号】:13_220_50
【页数】:
【正文语种】:英语


Product Code:SAE AIR1539
Title:Environmental Control System Contamination
Issuing Committee:Ac-9 Aircraft Environmental Systems Committee
Scope:This publication will be limited to a discussion of liquid and particulate contaminants which enter the aircraft through the environmental control system (ECS). Gaseous contaminants such as ozone, fuel vapors, sulphates, etc., are not covered in this AIR. It will cover all contamination sources which interface with ECS, and the effects of this contamination on equipment. Methods of control will be limited to the equipment and interfacing ducting which normally falls within the responsibility of the ECS designer.