NF R16-307-1988 道路车辆.小量操纵球形接头.尺寸特性

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【英文标准名称】:StandardPracticeforManualSamplingofLiquidFuels,AssociatedMaterialsandFuelSystemComponentsforMicrobiologicalTesting
【原文标准名称】:对液体燃料,相关材料和燃油系统部件手工取样进行微生物测试的标准实施规程
【标准号】:ASTMD7464-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D02.14
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:bailersampling;bottom-water;componentsampling;coresampling;filtrationmediasampling;fuel;microbiology;samplechainofcustody;samplehandling;samplelabeling;sampling;tapsampling;thiefsampling
【摘要】:Representativesamplesoffuelproductsandassociatedsubstancesarerequiredforthedeterminationofmicrobialcontaminationinfuelsandfuelsystemsinordertoaccuratelyassessthebiodeteriorationriskposedtothefuel,fuel-systemcomponentsorboth.Uncontrolledmicrobialcontaminationcanaffectfuelspecificationpropertiesadversely.AsdiscussedinGuideD6469,microbescancauseavarietyofoperationalproblems,includingfilterpluggingandmicrobiallyinfluencedcorrosion(MIC),thelatterofwhichcausesvalvefailure,tankandpipelinefailure.Thesepracticesformicrobiologicalsamplingdecreasetheriskofcontaminatingsampleswithextraneousmicrobes,therebyincreasingtheprobabilitythattheoriginalmicrobialpopulationinthesampledoesnotchangesignificantlybetweenthetimeofsamplingandthetimeoftesting.Theobjectiveofsamplingformicrobiologicaltestingistoobtainarepresentativesamplethatislikelytoreflectthedegreeandnatureofmicrobialcontaminationinthesystemfromwhichthesampleiscollected.Manual47addressestherationalforanddesignofmicrobialcontaminationprograms.Thephysical,chemicalandmicrobiologicalpropertyteststobeperformedonasamplewilldictatethesamplingprocedures,thesamplequantityrequired,andmanyofthesamplehandlingrequirements.Fuelsystemsarenotnormallydesignedtofacilitateoptimalmicrobiologicalsampling.Consequently,theselectionofsamplingdeviceandsamplesourcereflectcompromisesbetweenaccessibilityandsuitabilityformeetingthesamplecollectionobjective.TheguidanceprovidedinPracticeD4057generallyappliestothispracticeaswell.Consequently,thispracticewilladdressonlythoseproceduresthatapplyuniquelytomicrobiologicalsampling.1.1Thispracticecoversaspectsofsampledevicepreparationandsamplehandlingthatpreventsamplesfrombecomingcontaminatedwithmicroorganismsnotoriginallycontainedwithinthesample.1.2Thispracticealsocoverssamplehandlingconsiderationsthatreflecttheperishabilityofsamplescollectedformicrobiologicaltesting.1.3ThispracticesupplementsPracticeD4057byprovidingguidancespecifictothemanualsamplingoffuelswhensamplesaretobetestedformicrobialcontamination.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:9P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodsforChemicalAnalysisofAmmoniacalCopperArsenateandAmmoniacalCopperZincArsenate
【原文标准名称】:氨化砷酸铜的化学分析的标准规范
【标准号】:ASTMD1326-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:铜;砷酸铜;木材;施工材料;施工材料;化学分析和试验;工艺;建筑
【英文主题词】:Chemicalanalysisandtesting;Construction;Constructionmaterials;Copper;Copperarsenate;Processes;Wood
【摘要】:
【中国标准分类号】:G12
【国际标准分类号】:71_060_50
【页数】:5P;A4
【正文语种】:英语