ASTM D4306-2012b Standard Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination《受痕量杂质影响的试验用航空燃料采样容器的标准实施规程》.pdf
《ASTM D4306-2012b Standard Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination《受痕量杂质影响的试验用航空燃料采样容器的标准实施规程》.pdf》由会员分享,可在线阅读,更多相关《ASTM D4306-2012b Standard Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination《受痕量杂质影响的试验用航空燃料采样容器的标准实施规程》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D4306 12bAn American National StandardStandard Practice forAviation Fuel Sample Containers for Tests Affected by TraceContamination1This standard is issued under the fixed designation D4306; the number immediately following the designation indicates the year oforiginal adoption or, in t
2、he 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 Thi
3、s practice2covers the types of and preparation ofcontainers found most suitable for the handling of aviation fuelsamples for the determination of critical properties affected bytrace contamination.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are incl
4、uded in thisstandard.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 determine the applica-bility of regulatory limitations prior t
5、o use. For specificwarning statements, see 5.1, 5.2, 5.3, 5.4, and 5.6.2. Referenced Documents2.1 ASTM Standards:3D2624 Test Methods for Electrical Conductivity ofAviationand Distillate FuelsD3948 Test Method for Determining Water SeparationCharacteristics of Aviation Turbine Fuels by PortableSeparo
6、meterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4308 Test Method for Electrical Conductivity of LiquidHydrocarbons by Precision MeterD5452 Test Method for Particulate Contamination in Avia-tion Fuels by Laboratory Filtration2.2 SAE Standard:4MAP1794 Aircraft Recommended Pr
7、actice, Ball-On-Cylinder (Boc) Aircraft Turbine Fuel Lubricity Tester3. Significance and Use3.1 General descriptions for the manual sampling of petro-leum products are given in Practice D4057. However, anumber of aviation fuel properties are established or affectedby trace levels of polar or other c
8、ompounds. Measurementsignificance therefore requires that the sample containers notadd or adsorb any materials. This practice presents types andpreparations of sampling containers found satisfactory for thedetermination of water separation, copper corrosion, electricalconductivity, thermal stability
9、, lubricity, and trace metal con-tent. An approval procedure for new containers is also given.3.2 Two properties, particulate contamination and free watercontent, involve materials easily removed by any samplingcontainer. These properties should be determined by placingthe sample directly into the m
10、easuring apparatus and not usingcontainers to transport the sample to the measuring equipment.3.3 Recommendations in this practice provide guidance forimmediate use and for storage of samples. Immediate useinvolves sample storage for periods less than 24 h.4. Apparatus4.1 Sampling Containers:4.1.1 E
11、poxy-Coated Containers:4.1.1.1 While generally superior to other coatings, certainepoxy-coatings evolve plasticizers which can adversely affectcritical fuel properties. Because no specification is known todescribe a satisfactory epoxy-coating, 6.2 lists an approvalprocedure which can be used to iden
12、tify a satisfactory coating.4.1.1.2 For initial qualification of new container sources,coated cans should be examined closely to assure that thecoating covers all inside surfaces. If not, the cans should beconsidered the same as tin-plated, soldered side seam cans.4.1.1.3 Epoxy-coated cans are gener
13、ally considered satis-factory for sampling aviation gasoline.1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.J0.04on Additives and Electrical Properties.Current edition approved June 1, 2012. Publ
14、ished October 2012. Originallyapproved in 1984. Last previous edition approved 2012 as D430612a. DOI:10.1520/D4306-12B.2The detailed data on which this practice is based may be found in SAE PracticeMAP1794 and three research reports. Supporting data have been filed at ASTMInternational Headquarters
15、and may be obtained by requesting Research ReportsRR:D02-1169, RR:D02-1142, and RR:D02-1504.3For 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 S
16、ummary page onthe ASTM website.4Available from Society of Automotive Engineers (SAE), 400 CommonwealthDr., Warrendale, PA 15096-0001, http:/www.sae.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohock
17、en, PA 19428-2959, United States.4.1.2 Borosilicate (Hard) Glass BottlesAmber colored orbottles covered with an opaque material such as aluminum foilare preferred to avoid possible reactions with sunlight.4.1.3 Polytetrafluoroethylene (PTFE) BottlesBlack,carbon-filled bottles avoid possible reaction
18、s with sunlight.4.1.4 Polyethylene Bottles, high-density, linear.4.1.5 Steel Cans, tin-plated, soldered side seam.4.1.6 Soda Lime (Soft) Glass Bottles.4.2 Closures:4.2.1 Closures with a metallic inside surface are preferred.Closures with the same inside surfaces as suitable containers orPTFE are als
19、o suitable.4.2.2 Where required by shipping regulations such as DOT17C or 17E the closure should also include a metallic shippingseal.NOTE 1The use of improper or uncleaned closures or shipping sealswill destroy all precautions used in selecting and preparing containers. Theuse of properly selected
20、and cleaned closures or seals is essential.5. Reagents and Materials5.1 Acetone, CP Grade (WarningExtremely flammable.Vapors may cause flash fire). (See Note 2).5.2 Toluene, CP Grade (WarningExtremely flammable.Vapors may cause flash fire). (See Note 2). When used to cleancontainers for conductivity
21、, measure toluene conductivity ac-cording to Test Method D2624 or D4308 and use only ifconductivity is less than 20 pS/m.5.3 Isopropanol, CP Grade (WarningExtremely flam-mable. Vapors may cause flash fire). (See Note 2).5.4 Heptane, CP Grade (WarningExtremely flammable.Vapors may cause flash fire).
22、(See Note 2).NOTE 2Because these solvents are available at various purity levels,the use of CP grade is required to eliminates possible problems withresidual impurities.5.5 Detergent, heavy duty, water soluble, laboratory type.5.6 Jet A or Jet A-1, used as reference fluid. (WarningCombustible. Vapor
23、 harmful).5.6.1 Reference fluid for approval testing with Jet A or JetA-1 fuel is prepared in accordance with Test Method D3948,Appendix X1 on Preparation of Reference Fluid Base, andshould have an electrical conductivity of 0.1 to 1.0 by TestMethod D4308 (or give a reading of less than 1 according
24、toTest Method D2624) and an MSEP rating of 98-100 by TestMethod D3948.5.6.2 Compressed Air, clean, dry, oil free and filtered, maybe used to expedite air drying.6. Preparation of Apparatus6.1 Introduction:6.1.1 Experience indicates no single container type to meetsall desired requirements including
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