【英文标准名称】:StandardforSafetyforAntennaRotators
【原文标准名称】:天线旋转器安全标准
【标准号】:ANSI/UL150-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011
【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】:
【英文主题词】:Antennacomponents;Antennas;Commercialuse;Domestic;Frequencytransfer;Multi-turnvalveactuators;Radioreceivers;Specification(approval);Telecommunications
【摘要】:ANSIapprovalofUL150,whichcoversantennarotatorsforhouseholdandcommercialusethatgenerallyconsistofamast-mounted(generallyoutdoors),motorizeddriveunitthatrotatestheantennatothedesiredreceivingazimuth;anindoorlocated(usuallyneartelevision-orradio-receivingequipment)user-operatedcontrolunitthatdeliversoperatingpoweranddirectionsignalstothedriveunit;andalengthofmultiple-conductorClass-2circuitcabletoelectricallyinterconnectthedriveunitandcontrolunit.Theserequirementsdonotcoversystemsthatuseastationaryantennaandchangeorrotatethereceivingpatternbyelectronicorswitchingmeans.
【中国标准分类号】:M51
【国际标准分类号】:33_120_40
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforEvaluatingtheOxidativeResistanceofPolyethylene(PE)PipetoChlorinatedWater
【原文标准名称】:评定聚乙烯管(PE)抗氯化水氧化性的标准试验方法
【标准号】:ASTMF2263-2007e1
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F17.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:氯化的;评定;聚乙烯;管;抵抗;水
【英文主题词】:chlorineresistance;oxidativeresistance;pipe;polyethylene
【摘要】:1.1Thistestmethoddescribesthegeneralrequirementsforevaluatingthelong-term,chlorinatedwater,oxidativeresistanceofpolyethylene(PE),usedincoldwatersupplyorservicesystemsbyexposuretochlorinatedwater.Thistestmethodoutlinestherequirementsofapressurizedflow-throughtestsystem,typicaltestpressures,test-fluidcharacteristics,failuretype,anddataanalysis.Note1Otherknowndisinfectingsystems(chlorinedioxide,ozone,andchloramine)arecurrentlyusedforprotectionofpotablewater;however,free-chlorineisbyfarthemostcommonsysteminusetoday.Disinfectingsystemsotherthanchlorinehavenotbeenevaluatedbythismethod.1.2Guidelinesandrequirementsfortesttemperatures,testhoopstresses,andothertestcriteriahavebeenestablishedbypriortestingofPEpipe.OtherrelatedsystemcomponentsthattypicallyappearinaPEcoldwatersupplyorservicesystemcanbeevaluatedwiththePEpipe.WhentestingPEpipeandfittingsasasystem,itisrecommendedthattheanticipatedend-usefittingtype(s)andmaterial(s)beincludedinthetestcircuitsinceitisknownthatsomefittingtypesandmaterialscanimpactfailuretimes.Specimensusedshallberepresentativeofthepipingproduct(s)andmaterial(s)underinvestigation.Note2Theproceduresdescribedinthistestmethod(withsomemodificationsoftesttemperaturesorstresses,orboth)havebeenusedtoevaluatepipesmanufacturedfrompolybutylene(PB),crosslinkedpolyethylene(PEX),polypropylene(PP),multilayer(polymer-metalcomposite),copper,andstainlesssteel.1.3ThistestmethodisapplicabletoPEpipeandsystemsusedfortransportofpotablewatercontainingfree-chlorinefordisinfectingpurposes.Theoxidizingpotentialofthetest-fluidspecifiedinthistestmethodexceedsthattypicallyfoundinpotablewatersystemsacrosstheUnitedStates.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonlyandarenotconsideredstandard.Thefollowingprecautionarycaveatpertainsonlytothetestmethodportion,Section,ofthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G33
【国际标准分类号】:23_040_20
【页数】:6P.;A4
【正文语种】:
基本信息
| 标准名称： | 民用航空器维修标准 地面维修设施 第9部分：氧气附件修理作业场所 |
| 替代情况： | 替代MH 3145.79-2001 |
| 发布部门： | 中国民用航空局 |
| 发布日期： | 2008-10-20 |
| 实施日期： | 2009-02-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2009-02-01 |
适用范围
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所属分类： 航空 航天 航空运输与地面设备 货运 社会学 服务 公司(企业)的组织和管理 行政 运输 运输 航空运输