DIN 40705-1975 绝缘导线和裸导线的颜色标志
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来源:标准资料网
【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】:
【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 |
适用范围
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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