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【英文标准名称】:StandardPracticeforCollectionofSettledDustSamplesUsingDryWipeSamplingMethodsforSubsequentDeterminationofBerylliumandCompounds
【原文标准名称】:用干扫取样法收集固定尘灰连续测定铍化合物的标准实施规范
【标准号】:ASTMD7296-2006
【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】:D22.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:铍化合物;收集;化合物;测定;烘干;尘埃;试样;抽样方法
【英文主题词】:beryllium;drywipe;samplecollection;settleddust;surfaces
【摘要】:Thispracticeisintendedforthecollectionofsettleddustsamplesforthesubsequentmeasurementofberylliumandcompounds.Thepracticeismeantforuseinthecollectionofsettleddustsamplesthatareofinterestinclearance,hazardevaluation,riskassessment,andotherpurposes.Thispracticeisintendedsolelyforthecollectionofsettleddustsamplesfromhard,relativelysmoothnonporoussurfacesthatmaybecompromisedbywaterorotherwettingagentsandthatarethereforenotsuitableforwetwipesamplingusingPracticeD6966ormicro-vacuumsamplingusingPracticeD7144.Useofthispracticeforanypurposeotherthantheintendedpurposeisdiscouragedduetothelimitedcollectionefficiencyandhighvariabilityofdrywipesamplingascomparedtowettedwipeormicro-vacuumsampling3.Thispracticeislesseffectiveforcollectingsettleddustsamplesfromsurfaceswithsubstantialtexturesuchasroughconcrete,brickwork,texturedceilings,andsoftfibroussurfacessuchasupholsteryandcarpeting.Micro-vacuumsamplingusingPracticeD7144maybemoresuitableforthesesurfaces.1.1Thispracticecoversthecollectionofsettleddustcontainingberylliumand/orberylliumcompoundsonsurfacesusingthedrywipesamplingmethod.Thesesamplesarecollectedinamannerthatwillpermitsubsequentextractionanddeterminationofberylliumandcompoundsinthewipesusinglaboratoryanalysistechniquessuchasatomicspectrometryorfluorescencedetection.1.2Thispracticeislimitedinitsscopetoapplicationswherewettedwipesampling(usingPracticeD6966)orvacuumsampling(usingPracticeD7144)isnotphysicallyfeasible(forexample,ifthesurfacetobewipedwouldbecompromisedbyuseofwettedwipes).1.3Thispracticedoesnotaddressthesamplingdesigncriteria(thatis,samplingplanwhichincludesthenumberandlocationofsamples)thatareusedforclearance,hazardevaluation,riskassessment,andotherpurposes.Toprovideforvalidconclusions,sufficientnumbersofsamplesshouldbeobtainedasdirectedbyasamplingplan.1.4Thispracticecontainsnotesthatareexplanatoryandarenotpartofthemandatoryrequirementsofthispractice.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z60
【国际标准分类号】:13_040_40
【页数】:5P.;A4
【正文语种】:


MIL-V-24509, MILITARY SPECIFICATION: VALVES, FLANGED, BALL AND PLUG FOR SEWAGE AND SEA WATER SERVICE (21 OCT 1974)., This specification covers flanged ball and plug valves for sewage and seawater service, under pressure or vacuum. Sewage contains seawater with varying amounts of detergents, caustic, acids, human wastes, sediments, oils, greases, solvents, and other chemical agents used on board ship.