1、Designation:D417622Standard Test Method forFree Water and Particulate Contamination in Distillate Fuels(Visual Inspection Procedures)1This standard is issued under the fixed designation D4176;the number immediately following the designation indicates the year oforiginal adoption or,in the case of re
2、vision,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 U.S.Department of Defense.1.Scope*1.1 This test method c
3、overs two procedures for estimatingthe presence of suspended free water and solid particulatecontamination in distillate fuels having distillation end pointsbelow 400 C and an ASTM color of 5 or less.1.1.1 Both procedures can be used as field tests at storagetemperatures,or as laboratory tests at co
4、ntrolled temperatures.1.1.2 Procedure 1 provides a rapid pass/fail method forcontamination.Procedure 2 provides a gross numerical ratingof haze appearance.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does
5、 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.1.4 This international sta
6、ndard 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.Refe
7、renced Documents2.1 ASTM Standards:2D1500 Test Method for ASTM Color of Petroleum Products(ASTM Color Scale)D2276 Test Method for Particulate Contaminant in AviationFuel by Line SamplingD2709 Test Method for Water and Sediment in MiddleDistillate Fuels by CentrifugeD4057 Practice for Manual Sampling
8、 of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petroleum Products,LiquidFuels,and LubricantsD4176 Test Method for Free Water and Particulate Contami-nation in Distillate Fuels(Visual Inspection Procedures)D4860 Test Method for Free Water and Particulate Contami-nation in Middle Dis
9、tillate Fuels(Clear and Bright Nu-merical Rating)D8148 Test Method for Spectroscopic Determination ofHaze in Fuels2.2 ASTM Adjuncts:Distillate Fuel Bar Chart3Distillate Fuel Haze Rating Standard43.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this test method,referto Terminology
10、D4175.3.1.2 clear-and-bright(clean-and-bright),adja conditionin which the liquid sample(fuel)contains no visible waterdrops or particulates and is free of haze or cloudiness.3.1.3 free water,nwater in excess of that soluble in theliquid sample(fuel)at the temperature of the test and usuallyappearing
11、 in the liquid sample(fuel)as a haze(cloudiness),droplets,or water layer.3.2 Definitions of Terms Specific to This Standard:3.2.1 particulates,nsmall solid or semisolid particles,sometimes referred to as silt or sediment,that may or may notbe suspended in the fuel as a result of contamination byair-
12、blown dusts,corrosion by-products,fuel instability,orprotective-coating deterioration.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricantsand is the responsibility ofSubcommittee D02.14 on Stability,Cleanliness and Compatibility of Liquid
13、 Fuels.Current edition approved Oct.1,2022.Published October 2022.Originallyapproved in 1982.Last previous edition approved in 2021 as D4176 21a.DOI:10.1520/D4176-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book
14、of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from ASTM International Headquarters.Order Adjunct No.ADJD417601.Original adjunct produced in 1991.4Available from ASTM International Headquarters.Order Adjunct No.ADJD417602.Original adjun
15、ct produced in 1991.*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 stand
16、ardization 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.14.Summary of Test Method4.1 In Procedure 1 approximately 900 mL of fuel is placedinto a clear,glass,1 L jar and is examined visually for clarity.The sample is then swirled and examined for visual sedimentor water drops below the vortex.4.2 In Procedure 2 approximately 900 mL of fuel is place
