UL SUBJECT 1477-2005 压缩气体截流阀调查大纲.发布编号:1
作者:标准资料网 时间:2024-05-18 18:44:16 浏览:8569
来源:标准资料网
【英文标准名称】:OUTLINEOFINVESTIGATIONFORCOMPRESSEDGASSHUTOFFVALVESIssueNumber:1
【原文标准名称】:压缩气体截流阀调查大纲.发布编号:1
【标准号】:ULSUBJECT1477-2005
【标准状态】:现行
【国别】:美国
【发布日期】:2005-05-25
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:OUTLINEOFINVESTIGATIONFORCOMPRESSEDGASSHUTOFFVALVESIssueNumber:1
【中国标准分类号】:J16
【国际标准分类号】:
【页数】:
【正文语种】:英语
基本信息
| 标准名称： | 船用扁圆形焊接钢法兰 |
| 中标分类： |
船舶 >>
船舶管路附件 >>
船用管件 |
| 替代情况： | 调整为CB/T 3847-1999 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1977-07-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 船舶 船舶管路附件 船用管件
【英文标准名称】:StandardTestMethod(AnalyticalProcedure)forDeterminingTransmissivityofNonleakyConfinedAquifersbyOverdampedWellResponsetoInstantaneousChangeinHead(SlugTests)
【原文标准名称】:顶部瞬时变化的强衰减井响应法测定非渗漏承压含水层的传输率的标准试验方法(分析法)
【标准号】:ASTMD4104-1996(2010)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:D18.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aquifers;aquifertests;controlwells;groundwater;hydraulicconductivity;observationwells;storagecoefficientstorativity;transmissivity;Controlwells;Aquifers;Fieldtesting--groundwater/aquifers;Groundwater;Hydraulicconductivity/tra
【摘要】:AssumptionsofSolutionofCooperetal(1):Theheadchangeinthecontrolwellisinstantaneousattimet=0.Wellisoffinitediameterandfullypenetratestheaquifer.Flowinthenonleakyaquiferisradial.ImplicationsofAssumptions:Themathematicalequationsappliedignoreinertialeffectsandassumethewaterlevelreturnsthestaticlevelinanapproximateexponentialmanner.ThegeometricconfigurationofthewellandaquiferareshowninFig.1.Assumptionsareapplicabletoartesianorconfinedconditionsandfullypenetratingwells.However,thistestmethodiscommonlyappliedtopartiallypenetratingwellsandinunconfinedaquiferswhereitmayprovideestimatesofhydraulicconductivityfortheaquiferintervaladjacenttotheopenintervalofthewellifthehorizontalhydraulicconductivityissignificantlygreaterthantheverticalhydraulicconductivity.AspointedoutbyCooperetal(1)thedeterminationofstoragecoefficientbythistestmethodhasquestionablereliabilitybecauseofthesimilarshapeofthecurves,whereas,thedeterminationoftransmissivityisnotassensitivetochoosingthecorrectcurve.However,thecurveselectedshouldnotimplyastoragecoefficientunrealisticallylargeorsmall.1.1Thistestmethodcoversthedeterminationoftransmissivityfromthemeasurementofforce-free(overdamped)responseofawell-aquifersystemtoasuddenchangeofwaterlevelinawell.Force-freeresponseofwaterlevelinawelltoasuddenchangeinwaterlevelischaracterizedbyrecoverytoinitialwaterlevelinanapproximateexponentialmannerwithnegligibleinertialeffects.1.2TheanalyticalprocedureinthistestmethodisusedinconjunctionwiththefieldprocedureinTestMethodD4044forcollectionoftestdata.1.3Limitations8212;Slugtestsareconsideredtoprovideanestimateoftransmissivity.Althoughtheassumptionsofthistestmethodprescribeafullypenetratingwell(awellopenthroughthefullthicknessoftheaquifer),theslugtestmethodiscommonlyconductedusingapartiallypenetratingwell.Suchapracticemaybeacceptableforapplicationunderconditionsinwhichtheaquiferisstratifiedandhorizontalhydraulicconductivityismuchgreaterthanverticalhydraulicconductivity.Insuchacasethetestwouldbeconsideredtoberepresentativeoftheaveragehydraulicconductivityoftheportionoftheaquiferadjacenttotheopenintervalofthewell.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:13_060_10
【页数】:4P.;A4
【正文语种】:英语
