BS 2872-1962 铜和铜合金锻坯和锻件规范

上一篇: BS 2870-1962 辊轧铜与铜合金.板材、带材和箔材规范
下一篇: BS 2874-1962 铜与铜合金棒材与型材(锻坯除外)规范

Product Code:SAE AS22759/84
Title:Wire, Electrical, Polytetrafluoroethylene/Polyimide Insulated, Normal Weight, Nickel Coated, Copper Conductor, 260掳C, 600 Volts
Issuing Committee:Ae8-D Wire And Cable Committee
Scope:No scope available.【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】: