【英文标准名称】:StandardPracticeforDesignandInstallationofGroundWaterMonitoringWells
【原文标准名称】:设计和安装地下水监测井的标准实施规程
【标准号】:ASTMD5092-2004(2010)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2004
【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】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:aquifer;boreholedrilling;geophysicalexploration;groundwater;monitoringwell;siteinvestigation;Siteidentification/investigation/selection;Aquifers;Boreholedrilling;Design--ground-watersystems;Fieldtesting--groundwater/aquifers;Geoph
【摘要】:Thispracticeforthedesignandinstallationofgroundwatermonitoringwellswillpromote(1)efficientandeffectivesitehydrogeologicalcharacterization;(2)durableandreliablewellconstruction;and(3)acquisitionofrepresentativegroundwaterqualitysamples,groundwaterlevels,andhydraulicconductivitytestingdatafrommonitoringwells.Thepracticesestablishedhereinareaffectedbygovernmentalregulationsandbysite-specificgeological,hydrogeological,climatological,topographical,andsubsurfacegeochemicalconditions.Tomeetthesegeoenvironmentalchallenges,thispracticepromotesthedevelopmentofaconceptualhydrogeologicmodelpriortomonitoringwelldesignandinstallation.Aproperlydesignedandinstalledgroundwatermonitoringwellprovidesessentialinformationononeormoreofthefollowingsubjects:Formationgeologicandhydraulicproperties;Potentiometricsurfaceofaparticularhydrologicunit(s);Waterqualitywithrespecttovariousindicatorparameters;andWaterchemistrywithrespecttoacontaminantrelease.1.1Thispracticedescribesamethodologyfordesigningandinstallingconventional(screenedandfilter-packed)groundwatermonitoringwellssuitableforformationsrangingfromunconsolidatedaquifers(i.e.,sandsandgravels)togranularmaterialshavinggrain-sizedistributionswithupto50%passinga200sieveandasmuchas20%clay-sizedmaterial(i.e.,siltyfinesandswithsomeclay).Formationsfinerthanthis(i.e.,silts,clays,siltyclays,clayeysilts)shouldnotbemonitoredusingconventionalmonitoringwells,asrepresentativegroundwatersamples,freeofartifactualturbidity,cannotbeassuredusingcurrentlyavailabletechnology.Alternativemonitoringtechnologies(notdescribedinthispractice)shouldbeusedintheseformations1.2Therecommendedmonitoringwelldesignandinstallationprocedurespresentedinthispracticearebasedontheassumptionthattheobjectivesoftheprogramaretoobtainrepresentativegroundwatersamplesandotherrepresentativegroundwaterdatafromatargetedzoneofinterestinthesubsurfacedefinedbysitecharacterization.1.3Thispractice,incombinationwithproperwelldevelopment(D5521),propergroundwatersamplingprocedures(D4448),andproperwellmaintenanceandrehabilitation(D5978),willpermitacquisitionofgroundwatersamplesfreeofartifactualturbidity,eliminatesiltationofwellsbetweensamplingevents,andpermitacquisitionofaccurategroundwaterlevelsandhydraulicconductivitytestdatafromthezonescreenedbythewell.Forwellsinstalledinfine-grainedformationmaterials(upto50%passinga200sieve),itisgenerallynecessarytouselow-flowpurgingandsamplingtechniques(D6771)incombinationwithproperwelldesigntocollectturbidity-freesamples.1.4Thispracticeappliesprimarilytowelldesignandinstallationmethodsusedindrilledboreholes.OtherStandards,includingGuideD6724andPracticeD6725,coverinstallationofmonitoringwellsusingdirect-pushmethods.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard,exceptasnotedbelow.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunits,whichareprovidedforinformationonlyandarenotconsideredstandard......
【中国标准分类号】:P13
【国际标准分类号】:13_060_10
【页数】:16P.;A4
【正文语种】:英语


【英文标准名称】:Foundryproducts-Generalspecificationsformanufacturingandtestingofsteelcastings(allgrades)forpumps,valvesandfittingsandsimilargeneralpurposeparts.
【原文标准名称】:铸造产品.泵,阀门和配件以及类似通用部件用钢铸件的生产和试验通用规范
【标准号】:NFA32-072-2009
【标准状态】:现行
【国别】:法国
【发布日期】:2009-07-01
【实施或试行日期】:2009-07-10
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Caststeels;Castings;Chemicalcomposition;Foundries;Heattreatment;Informationmarks;Pumps;Qualitytesting;Specification;Steels;Valves
【摘要】:
【中国标准分类号】:J31
【国际标准分类号】:23_060_01;23_080;77_140_80
【页数】:7P;A4
【正文语种】:其他