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DIN 40705-1975 绝缘导线和裸导线的颜色标志

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【英文标准名称】:Identificationofinsulatedandbareconductorsbycolours
【原文标准名称】:绝缘导线和裸导线的颜色标志
【标准号】:DIN40705-1975
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:


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【英文标准名称】:StandardPracticeforLocatingLeaksinSewerPipesUsingElectro-Scan--theVariationofElectricCurrentFlowThroughthePipeWall
【原文标准名称】:使用电扫描电流流经管壁时的变化定位污水管漏缝的标准实施规程
【标准号】:ASTMF2550-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:F36.20
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:条件;电流;泄漏;管壁;排水工程;污水管;污水工程;变化
【英文主题词】:defects;electriccurrentflow;infiltration;leaks;sewerpipes
【摘要】:Thetestingofsewersforleaksisaregularpracticenecessaryforthemaintenanceandoptimalperformanceofsewercollectionsystemssoremedialactioncanbeprioritized,designed,andcarriedouttoreduceinfiltrationandexfiltration.Thispracticeservesasameanstodetectandlocatealltypesofpipedefectsthatarepotentialsourcesofwaterleakseitherintooroutofelectricallynon-conductingpipes.Leakingjointsanddefectiveserviceconnectionsaredetectedthatoftenmaynotshowasadefectwhenviewedfrominsidethepipe.Theelectro-scandatamaybeprocessedandanalyzedtoprovidesomeinformationonthesizeandtypeofpipedefect.(8.4.1)Thispracticeappliestomainlineandlateralgravityflowstormsewers,sanitarysewers,andcombinedsewersfabricatedfromelectricallynon-conductingmaterialwithdiametersbetween3and60in.(75and1500mm).Thepipesmustbefreeofobstructionsthatpreventthesondepassingthroughthepipe.1.1Thispracticecoversproceduresforusingtheelectro-scanmethodtodetectandlocatepotentialpipeleakdefectsthatarepotentialsourcesofleaksinpipesfabricatedfromelectricallynonconductivematerialsuchasplastic,clay,andconcrete(reinforcedandnon-reinforced).Theelectro-scanmethodusesthevariationofelectriccurrentflowthroughthepipewalltolocatedefectsthatarepotentialwaterleakagepathseitherintooroutofthepipe.1.2Thispracticeappliestomainlineandlateralgravityflowstormsewers,sanitarysewers,andcombinedsewerswithdiametersbetween3and60in.(75and1500mm).Thepipesmustbefreeofobstructionsthatpreventthesondepassingthroughthepipe.1.3Theuseoftheelectro-scanrequiresaccesstosewers,fillingsewers,andoperationsalongroadwaysthataresafetyhazards.Thisstandarddoesnotdescribethehazardslikelytobeencounteredorthesafetyproceduresthatmustbecarriedoutwhenoperatinginthesehazardousenvironments.()Therearenosafetyhazardsspecificallyassociatedwiththeuseofanelectro-scanapparatusthatcomplieswiththespecificationsprovidedinthisstandard.(and.)1.4Theuseofelectro-scanrequirestheinsertionofvariousitemsintoasewer.Thereisalwaysariskthatduetounknownstructuralconditionsinthesewersuchitemsmaybecomelodgedinthepipeormaycausethestateofasewerinpoorstructuralconditiontofurtherdeteriorate.Thisstandarddoesnotdescribemethodstoassessthestructuralriskofasewer.1.5Thevaluesstatedininch/poundunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q81
【国际标准分类号】:93_030
【页数】:7P.;A4
【正文语种】:


基本信息
标准名称:电气化铁道用铜及铜合金接触线
英文名称:Copper and Copper-Alloy Contact Wires for Electric Railway
中标分类: 铁路 >> 牵引供电 >> 接触网零件
ICS分类: 电气工程 >> 电力牵引设备
替代情况:TB/T2809-1997 TB/T 2810-1997 TB/T 2821-1997
发布部门:中华人民共和国铁道部
发布日期:2005-03-29
实施日期:2005-07-01
首发日期:
作废日期:
出版日期:
页数:13页
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所属分类: 铁路 牵引供电 接触网零件 电气工程 电力牵引设备