1、Designation:D722414An 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 as thestandard.The values given in parentheses are for informationonly.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 establish appro-priate safety and health practices and
10、 determine the applica-bility of regulatory limitations prior to use.For specificwarning statements,see 8.2 8.5.2.Referenced Documents2.1 ASTM Standards:2D1655 Specification for Aviation Turbine FuelsD2550 Method of Test for Water Separation Characteristicsof Aviation Turbine Fuels(Withdrawn 1989)3D
11、3602 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-eterD4306 Practice for Aviation Fuel Sample Containers forTests Affected by Trace Contaminat
12、ionD7261 Test Method for Determining Water Separation Char-acteristics of Diesel Fuels by Portable Separometer1This 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 Cleanline
13、ss.Current edition approved Dec.1,2014.Published January 2015.Originallyapproved in 2005.Last previous edition approved in 2013 as D7224 13.DOI:10.1520/D7224-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of AS
14、TMStandards 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 Bo
15、x C700,West Conshohocken,PA 19428-2959.United States1 2.2 Military Standards:4MIL-DTL-5624 Turbine Fuel,Aviation Grades JP-4,JP-5,and JP-5/JP-8 STMIL-DTL-25524 Turbine Fuel,Aviation,Thermally StableMIL-DTL-38219 Turbine Fuels,Low Volatility,JP-7MIL-DTL-83133 Turbine Fuel,Aviation,Kerosene Types,NATO
16、 F-34(JP-8),NATO F-35,and JP-8+1003.Terminology3.1 For definitions of the terms used in this test method thatare not shown below,refer to Test Methods D3948 and D7261.3.2 Definitions:3.2.1 Micro-Separometer5rating(MSEP5rating),nin theaviation fuel industry,a numerical value indicating the ease ofseparating emulsified water from aviation(jet)fuel by coales-cence as affected by the presence of surface active materials(also known as surface active agents or surfactants).3.2.1.1 DiscussionMSEP ratin
