1、Designation:D722420An American National StandardStandard Test Method forDetermining Water Separation Characteristics of Kerosine-Type Aviation Turbine Fuels Containing Additives byPortable Separometer1This standard is issued under the fixed designation D7224;the number immediately following the desi
2、gnation 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.INTRODUCTIONThis test method was developed to sa
3、tisfy three objectives:(1)Develop a test method that wouldrespond in the same manner as Test Method D3948 to strong surfactants,but not give lowmicro-separometer(MSEP)ratings to fuels containing weak surfactants(additives)that do not degradethe performance of commercial filter separator elements;(2)
4、Use filter media in the coalescer test thatwould be representative of the filtration media in commercial filter separator elements;and(3)Improve the precision of the test method compared to Test Method D3948.This test method was developed using material that is representative of coalescing materials
5、currently used in commercial filter separator elements.The fiberglass coalescing material used in TestMethod D3948 was suitable for coalescing filters in use when that test method was developed,butdevelopments in coalescing elements in the intervening years have resulted in improved materials thatar
6、e not affected by weak surfactants.Test Method D3948 yields low results on some additized fuelsthat do not affect the performance of filter separators(coalescing filters)in actual service.Since thistest method was developed with material that is representative of the media used in current filtersepa
7、rators,the results by this test method are more relevant to performance in current filter separators.1.Scope*1.1 This test method covers a rapid portable means for fieldand laboratory use to rate the ability of kerosine-type aviationturbine fuels,both neat and those containing additives,torelease en
8、trained or emulsified water when passed throughfiberglass coalescing material.1.1.1 This test method is applicable to kerosine-type avia-tion turbine fuels including:Jet A and Jet A-1(as described inSpecification D1655);JP-5,JP-7,JP-8,and JP-8+100.(SeeSection 6.)1.2 The values stated in SI units are
9、 to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.3 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 es
10、tablish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific warning statements,see 8.2 8.5.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-izati
11、on 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
12、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-eter1
13、This 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 May 1,2020.Published June 2020.Originallyapproved in 2005.Last previous edition app
14、roved in 2018 as D7224 14(2018).DOI:10.1520/D7224-20.2For 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 app
15、roved 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
16、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.D4306 Practice for Aviation Fuel Sample Containers forTests Affected by Trace ContaminationD6615 Specification for Jet B Wide-Cut Aviation TurbineFuelD7261 Test Method for Determining Water Separation Char-acteristics of Diesel Fuels by Porta
