ASTM_D_3602_-_90a_scan.pdf

Designation:D 3602-90a AMERICAN S O C I W FOR TESTING AND MATERIALS 191 6 Race St Philadelphla,Pa 191 03 Reprinted from the Annual Book of ASTM Standards.Copyright ASTM If not listed in the current combined Index,will appear in the next edition.An American National Standard Standard Field Test Method for Water-Separation Characteristics of Aviation Turbine Fuels This standard is issued under the fixed designation D 3602;the number immediately following the designation indicates the year of original adoption or.in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope 1.1 This test method provides a rapid portable means for field and laboratory use to rate the ability of aviation turbine fuels to release entrained or emulsified water when passed through fiberglass coalescing material.It is intended to measure the water separation characteristics of fuel as produced,after it has been blended with additives or delivered to the point of use.1.2 The values stated in SI units are to be regarded as the standard.The values given in parentheses are for informa-tion only.1.3 This standard does not purport to address all o f the safety problems,sf any,associated with its use.It is the responsibility o f the user o f this standard to establish appro-priate safety and health practices and determine the applica-bility o f regulatory limitations prior to use.For specific hazard statements,see 6.2.3,7.2,1.3,1.4,1.5,8.3,9.1,10.4,10.12,A1.2.3,A1.2.5,A2.4.4,and Annex A4.2.Referenced Documents 2.1 ASTM Standards:D 1655 Specification for Aviation Turbine Fuels2 D 2550 Test Method for Water Separation Characteristics of Aviation Turbine Fuels3 D 3948 Test Methods for Determining Water-Separation Characteristics of Aviation Turbine Fuels by Portable Separometee D4306 Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination4 3.Terminology 3.1 Description o f Term Specijic to This Standard:3.1.1 minisonic separometer su$actants(MSS)-a nu-merical rating indicating the ease of separating emulsified water from fuel by coalescence as affected by the presence of surfactants.4.Summary of Test Method 4.1 The fuel sample is emulsified with water in a syringe using an ultrasonic probe.The emulsion is then expelled from the syringe at a prescribed rate through a standard fiberglass coalescer and the eMuent is analyzed for uncoalesced water by a light transmission measurement.The This test method is under the jurisdiction of ASTM Committee D-2 on Petroleum Products and Lubricants and is the direct responsibility of Subcom-mittee W2.J on Aviation Fuels.Current edition approved Dec.27.1990.Published February 1991.Originally published as D 3602-77.Last previous edition D 3602-90.Annrral Book o f ASTM Standards.Vol 05.0 I.Annual Book o f ASTM Standards,Vol 05.02.Annual Book ofdST.M Standards,Vol 05.03.results are reported on a 0-to-100 scale to the nearest whole number.High ratings indicate the water is easily coalesced,and,therefore,that the fuel is relatively free of surfactant materials.A test can be performed in 5 to 10 min.Cleaning-is eliminated by use of disposable test parts.5.Significance and Use 5.1 This test method provides a measure of the presence of surface active substances in aviation turbine fuels.Like Test Methods D 2550 and D 3948 it can detect carryover of traces of refinery treating residues in fuel as produced,This test method can also detect surface active substances added to or picked up by fuel during handling from point of production to point of use.Some of these substances affect the ability of filter separators to separate free water from the fuel.5.2 Tests by this field method will not necessarily give the same rating of water separation characteristics of fuel as Test Method D 2550.However,tests by D 3602 should give the same results as Test Method D 3948.6.Apparatus 6.1 The Minisonic Separometer is portable and self-contained,requiring only a source of 1 I5 V,50 to 60-Hz,a-c:,power for its operation.(The Minisonic Separometer can be operated on 230 V,50 to 60-Hz power with the addition of an accessory transformer.)The accessory operating parts as well as expendable materials for six tesfs can be packed in the lockable case.6.2 The main features of the Minisonic Separometer are shown in Figs.1 and 2.Figure 1 shows the ultrasonic converter(in clamp)with probe tip mounted on the left side of the raised case lid and the syringe drive mechanism on the right side.Figure 2 shows the operating controls which are fitted on two separate panels in the bottom of the case,and the hinged lid providing access to the storage area in the back.6.2.1 Main Power controls located at the upper left of the rearmost control panel include the main power switch and the associated indicator light.A cooling and ventilating fan operates continuously when the main p