ASTM_D_8073_-_22.pdf

Designation:D807322An American National StandardStandard Test Method forDetermination of Water Separation Characteristics ofAviation Turbine Fuel by Small Scale Water SeparationInstrument1This standard is issued under the fixed designation D8073;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers a procedure to rate the ability ofaviation turbine fuels to release entrained and emulsified waterwhen passed through a water-coalescing filter.1.2 Results are expressed as a Water Separation Index(WSI).1.3 The values stated in SI units are to be regarded asstandard.1.3.1 ExceptionUnits in WSI are included.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1655 Specification for Aviation Turbine FuelsD2550 Method of Test for Water Separation Characteristicsof Aviation Turbine Fuels(Withdrawn 1989)3D3602 Test Method for Water Separation Characteristics ofAviation Turbine Fuels(Withdrawn 1994)3D3948 Test Method for Determining Water Separation Char-acteristics ofAviation Turbine Fuels by Portable Separom-eterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4177 Practice for Automatic Sampling of Petroleum andPetroleum ProductsD4306 Practice for Aviation Fuel Sample Containers forTests Affected by Trace ContaminationD6300 Practice for Determination of Precision and BiasData for Use in Test Methods for Petroleum Products,Liquid Fuels,and LubricantsD7224 Test Method for Determining Water Separation Char-acteristics of Kerosine-Type Aviation Turbine Fuels Con-taining Additives by Portable Separometer3.Terminology3.1 Definitions:3.1.1 surfactant,nin petroleum fuels,surface active ma-terial(or surface active agent)that could disarm(deactivate)filter separator(coalescing)elements so that free water is notremoved from the fuel in actual service.3.1.1.1 DiscussionTechnically,surfactants affect the inter-facial tension between water and fuel,which affects thetendency of water to coalesce into droplets.3.2 Definitions of Terms Specific to This Standard:3.2.1 sonicator,na device that applies ultrasonic soundenergy to the test specimen.3.2.1.1 DiscussionThe sonicator is used to emulsify thewater and aviation fuel.3.2.2 water separation index(WSI),na numerical ratingindicating the ease of separating water from fuel by coales-cence.3.2.2.1 DiscussionA high WSI indicates a fuel that sepa-rates water easily and is relatively free from surfactants.4.Summary of Test Method4.1 A fixed volume of test specimen is poured into the testbeaker.The apparatus is purged with the test specimen.Aprecise amount of water containing a specific dye is added to1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.J0.05 on Fuel Cleanliness.Current edition approved April 1,2022.Published May 2022.Originallyapproved in 2016.Last previous edition approved in 2021 as D8073 21.DOI:10.1520/D8073-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1the test beaker.The test specimen and dyed water are emulsi-fied using a sonicator.The resulting emulsion is passed at aconstant rate directly to the detector,which is sensitive to thedye,to measure a reference value.The emulsion is then passedat the same constant rate to the detector by means of a filtercartridge that is designed to remove entrained water.Readingsfromthedete