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1、Designation:D4285?83(Reapproved2012)StardTestMethodfIndicatingOilWaterinCompressedAir1ThisstardisissuedunderthefixeddesignationD4285thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecaseofre

2、visiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thistestmethodisusedtodeterminethepresenceofoilwaterincompr

3、essedairusedfabrasiveblastcleaningairblastcleaningcoatingapplicationoperations.1.2Thevaluesstatedininchpoundunitsaretoberegardedasstard.Nootherunitsofmeasurementareincludedinthisstard.1.3Thisstarddoesnotpurpttoaddressall

4、ofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.FspecifichazardstatementsseeSection4

5、.2.SignificanceUse2.1Cleancompressedairisrequiredtopreventcontaminationofcoatingmaterialssurfacesbeingpreparedfcoating.Thistestmethodisavisualexaminationtechniquefdeterminingoilwaterincompressedair.Othertypesofcontaminat

6、ionmayrequireadditionalanalyticaltechniquesfdetection.3.ApparatusMaterials3.1AbsbentCollectsuchaswhiteabsbentpaperclothrigidbackingfmountingabsbentcollect3.2NonabsbentCollectsuchasrigidtransparentplasticapproximately1?4i

7、n.thick.4.Cautions4.1Toavoidfalseindicationspritotesting:4.1.1Allowcompressedairsystemtoreachoperatingconditions4.1.2Allowairtodisgeatoperatingconditionstoremoveaccumulatedcondensationinthesystem.4.2Fastenthecollectmater

8、ialtotherigidbacking.Precaution:Avoidpersonalcontactwiththeairstream.5.Sampling5.1Conductthetestondisgingairasclosetotheusepointaspossibleaftertheinlineoilwaterseparats.6.Procedure6.1Useeithertheabsbentnonabsbentcollect.

9、6.2Positionthecollectwithin24in.oftheairdisgepointcenteredintheairstream.6.3Adjustairdisgesothatthecollectremainsintactduringthetest.Allowairtodisgeontothecollectfaminimumof1min.6.4Visuallyexaminethecollectfthepresenceab

10、senceofoilwaterboth.7.InterpretationofResults7.1Anyindicationofoildiscolationonthecollectshallbecausefrejectionofthecompressedairfuseinabrasiveblastcleaningairblastcleaningcoatingapplicationoperations.7.2Anyindicationsof

11、watercontaminationonthecollectshallbecausefrejectionofthecompressedairfuseinthoseapplicationswherewaterisdetrimentalsuchasabrasiveblastcleaningairblastcleaningcoatingapplicationoperations.8.PrecisionBias8.1Noprecisionbia

12、sstatementhasbeenestablishedfthistestmethod.9.Keywds9.1compressedairoilwaterincompressedair1ThistestmethodisunderthejurisdictionofASTMCommitteeD33onProtectiveCoatingLiningWkfPowerGenerationFacilitiesisthedirectresponsibi

13、lityofSubcommitteeD33.05onApplicationSurfacePreparation.CurrenteditionapprovedMay12012.PublishedMay2012.iginallyapprovedin1983.Lastpreviouseditionapprovedin2005asD428583(2005).DOI:10.1520D428583R12.Copyright?ASTMInternat

14、ional100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates1ASTMInternationaltakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstard.Usersofthisstardareexpressl

15、yadvisedthatdeterminationofthevalidityofanysuchpatentrightstheriskofinfringementofsuchrightsareentirelytheirownresponsibility.Thisstardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteemustbereviewedeveryfive

16、yearsifnotrevisedeitherreapprovedwithdrawn.YourcommentsareinvitedeitherfrevisionofthisstardfadditionalstardsshouldbeaddressedtoASTMInternationalHeadquarters.Yourcommentswillreceivecarefulconsiderationatameetingoftherespo

17、nsibletechnicalcommitteewhichyoumayattend.IfyoufeelthatyourcommentshavenotreceivedafairhearingyoushouldmakeyourviewsknowntotheASTMCommitteeonStardsattheaddressshownbelow.ThisstardiscopyrightedbyASTMInternational100BarrHa

18、rbDrivePOBoxC700WestConshohockenPA194282959UnitedStates.Individualreprints(singlemultiplecopies)ofthisstardmaybeobtainedbycontactingASTMattheaboveaddressat6108329585(phone)6108329555(fax)(email)throughtheASTMwebsite(www.

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