【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】:


【英文标准名称】:Plastics-DeterminationofIzodimpactstrength(ISO180:2000);GermanversionENISO180:2000
【原文标准名称】:塑料.伊兆特(Izod)冲击强度测定
【标准号】:DINENISO180-2001
【标准状态】:作废
【国别】:德国
【发布日期】:2001-06
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:测定;试验设备;材料;材料试验;塑料;复合材料;脆性;高聚物;韧性;试样;试样制备;热固性聚合物;定义;定义;试验;冲击强度;热塑性聚合物;伊兆特冲击试验;抗冲击(强度);仪器
【英文主题词】:
【摘要】:
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:13P;A4
【正文语种】:德语