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BS 7655-2.4-1993 电缆绝缘和铠装材料规范.第2部分:合成橡胶铠装材料.第4节:焊接电缆覆层

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【英文标准名称】:Specificationforinsulatingandsheathingmaterialsforcables.Elastomericsheathingcompounds.Weldingcablecovering
【原文标准名称】:电缆绝缘和铠装材料规范.第2部分:合成橡胶铠装材料.第4节:焊接电缆覆层
【标准号】:BS7655-2.4-1993
【标准状态】:作废
【国别】:英国
【发布日期】:1993-04-15
【实施或试行日期】:1993-04-15
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:护套电缆;性能;固体绝缘材料;抗拉强度;电缆护套;合成橡胶;电缆;断裂伸长;温度;天然橡胶;老化;绝缘电缆;电绝缘材料;焊接设备;弹性体;试验条件
【英文主题词】:
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:29_035_20
【页数】:6P;A4
【正文语种】:英语


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【英文标准名称】:GuideforFireHazardAssessmentofRailTransportationVehicles
【原文标准名称】:铁路运输车辆着火危险评定指南
【标准号】:ANSI/ASTME2061-2006
【标准状态】:作废
【国别】:美国
【发布日期】:2006
【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】:维修;铁路工程
【英文主题词】:Firehazards;Firesafety;Maintenance;Railwayengineering
【摘要】:Thisisaguidetodevelopingfirehazardassessmentsforrailtransportationvehicles.Ithasbeenwrittentoassistprofessionals,includingfiresafetyengineers,whowishtoassessthefiresafetyofrailtransportationvehicles,duringoraftertheirdesign(seealso).Thisguideisnotinitselfafirehazardassessmentnordoesitprovideacceptancecriteria;thus,itcannotbeusedforregulation.Hazardassessmentisaprocessthatresultsinanestimateofthepotentialseverityofthefiresthatcandevelopunderdefinedscenarios,oncedefinedincidentshaveoccurred.Hazardassessmentdoesnotaddressthelikelihoodofafireoccurring.Hazardassessmentisbasedonthepremisethatanignitionhasoccurred,consistentwithaspecifiedscenario,andthatpotentialoutcomesofthescenariocanbereliablyestimated.Consistentwith,thisguideprovidesmethodstoevaluatewhetherparticularrailpassengerdesignsprovideanequalorgreaterleveloffiresafetywhencomparedtodesignsdevelopedbasedonthetraditionalapplicablefire-test-responsecharacteristicapproachescurrentlywidelyusedinthisindustry.Suchapproacheshavetypicallybeenbasedonprescriptivetestmethodologies.Thefollowingareexamplesofsuchlistsofprescriptivetests:therequirementsbytheFederalRailroadAdministration(FRA),theformerguidelinesoftheFRA,therequirementsofNFPA130,andtherecommendedpracticesoftheFederalTransitAdministration(FTA).Selectiveuseofpartsofthemethodologyinthisguideandofindividualfire-test-responsecharacteristicsfrom(oranyothersetoftests)doesnotsatisfythefiresafetyobjectivesofthisguideorofthetable.Thisguideshallbeusedinitsentiretytodevelopafirehazardassessmentforrailtransportationvehiclesortoaidinthedesignofsuchvehicles.Thisguideincludesandappliesacceptedandclearlydefinedfiresafetyengineeringtechniquesandmethodsconsistentwithbothexisting,traditionalprescriptivecodesandstandardsandperformancebasedfirecodesandstandardsunderdevelopmentthroughouttheworld.Thisguideprovidesrecommendedmethodstomitigatepotentialdamagefromfiresinrailtransportationvehicles,byassessingthecomparativefirehazardofparticularproducts,assemblies,systemsoroveralldesignsintendedforuseinrailtransportationvehicles.Suchmethodscouldincludechangestothematerials,components,products,assemblies,orsystemsinvolvedintheconstructionoftherailtransportationvehicleorchangesinthedesignfeaturesofthevehicle,includingthenumberandlocationofautomaticallyactivatedfiresafetydevicespresent(seeforfurtherdetails).Thisguideisintended,amongotherthings,tobeofassistancetopersonneladdressingissuesassociatedwiththefollowingareas.Designandspecificationofrailtransportationvehicles.Fabricationofrailtransportationvehicles.Supplyofassemblies,subassemblies,andcomponentmaterials,foruseinrailtransportationvehicles.Operationofrailtransportationvehicles.Provisionofasafeenvironmentforalloccupantsofarailtransportationvehicle.Thetechniquesprovidedinthisguidearebasedonspecificassumptionsintermsofrailtransportationvehicledesigns,constructionandfirescenarios.Thesetechniquescanbeusedtoprovideaquantitativemeasureofthefirehazardsfromaspecifiedsetoffireconditions,involvingspecificmaterials,products,orassemblies.Suchanassessmentcannotbereliedupontopredictthehazardofactualfires,whichinvolveconditions,orvehicledesigns,otherthanthoseassumedintheanalysis.Inparticular,thefirehazardmaybeaffectedbytheanticipatedusepatternofthevehicle.Thisguidecanbeusedtoanalyzetheestimatedfireperformanceofthevehiclespecifiedunderdefinedspecificfirescenarios.
【中国标准分类号】:C80;S09
【国际标准分类号】:45_120
【页数】:
【正文语种】:英语


【英文标准名称】:StandardTestMethodforFieldMeasurementofInfiltrationRateUsingDouble-RingInfiltrometerwithSealed-InnerRing
【原文标准名称】:使用有密封内环的双环渗透计现场测量渗透率的标准试验方法
【标准号】:ASTMD5093-2002(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:D18.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:doubleringinfiltration;in-placeinfiltration;soilmoistureinfiltrometer;Clayliners;Double-ringinfiltrometers;Fieldtesting--soil;Fine-grainedsoil;Flowandflowrate--water;Infiltrationrate;Soil;Soil-moistureanalysis
【摘要】:Thistestmethodprovidesameanstomeasurelowinfiltrationratesassociatedwithfine-grained,clayeysoils,andareintherangeof1x00D7;10x2212;7m/sto1x00D7;10x2212;9m/s.Thistestmethodisparticularlyusefulformeasuringliquidflowthroughsoilmoisturebarrierssuchascompactedclaylinerorcoversusedatwastedisposalfacilities,forcanalandreservoirliners,forseepageblankets,andforamendedsoillinerssuchasthoseusedforretentionpondsorstoragetanks.Thepurposeofthesealedinnerringisto:(1)provideameanstomeasuretheactualamountofflowratherthanadropinwaterelevationwhichistheflowmeasurementprocedureusedinTestMethodD3385and(2)toeliminateevaporationlosses.Thepurposeoftheouterringistopromoteone-dimensional,verticalflowbeneaththeinnerring.Theuseoflargediameterringsandlargedepthsofembedmentshelpstoensurethatflowisessentiallyone-dimensional.Thistestmethodprovidesameanstomeasureinfiltrationrateoverarelativelylargeareaofsoil.Testsonlargevolumesofsoilcanbemorerepresentativethantestsonsmallvolumesofsoil.Thedataobtainedfromthistestmethodaremostusefulwhenthesoillayerbeingtestedhasauniformdistributionofporespace,andwhenthedensityanddegreeofsaturationandthehydraulicconductivityofthematerialunderlyingthesoillayerareknown.Changesinwatertemperaturecanintroducesignificanterrorinthevolumechangemeasurements.Temperaturechangeswillcausewatertoflowinoroutoftheinnerringduetoexpansionorcontractionoftheinnerringandthewatercontainedwithintheinnerring.Theproblemoftemperaturechangescanbeminimizedbyinsulatingtherings,byallowingenoughflowtooccursothattheamountofflowresultingfromatemperaturechangeisnotsignificantcomparedtothatduetoinfiltration,orbyconnectinganddisconnectingthebagfromtheinnerringwhenthewaterintheinnerringisatthesametemperature.Ifthesoilbeingtestedwilllaterbesubjectedtoincreasedoverburdenstress,thentheinfiltrationratecanbeexpectedtodecreaseastheoverburdenstressincreases.Laboratoryhydraulicconductivitytestsarerecommendedforstudiesoftheinfluenceoflevelofstressonthehydraulicpropertiesofthesoil.Note18212;Thequalityoftheresultproducedbythisstandarddependsonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilitiesbeingused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting,sampling,inspection,etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfensurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors1.1Thistestmethoddescribesaprocedureformeasuringtheinfiltrationrateofwaterthroughin-placesoilsusingadouble-ringinfiltrometerwithasealedinnerring.1.2Thistestmethodisusefulforsoilswithinfiltrationratesintherangeof1x00D7;10x2212;7m/sto1x00D7;10x2212;10m/s.Wheninfiltrationratesx2265;1x00D7;10x2212;