ASTM_D_7919_-_14.pdf

Designation:D791914Standard Guide forFilter Debris Analysis(FDA)Using Manual or AutomatedProcesses1This standard is issued under the fixed designation D7919;the number immediately following the designation 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.INTRODUCTIONTypically,main lubrication systems incorporate in-system filters to maintain an appropriatelubricant cleanliness level during operation.Since the lubrication filter element removes and retainsa major portion of the solid contamination in the lubrication system,evaluation of the debris capturedwithin the filter element aids in the determination of machine condition and root cause analysis(RCA).The past decade has seen more widespread use of filter debris analysis(FDA)as a condition-monitoring tool to detect and analyze abnormal contaminant ingression into the lube system andpredict lube system component wear.This is in part due to the increased use of finer filtration inmachinery which results in a decrease of wear debris available for detection by traditional sampled oilanalysis.The U.S.military and other militaries around the world as well as Original EquipmentManufacturers have adopted FDAtechniques.Commercial in-service oil laboratories are also utilizinga wide range of FDA techniques,from manual to automated.It is necessary to provide a guide toimprove analysis and comparison of data.1.Scope1.1 This guide pertains to removal and analysis techniquesto extract debris captured by in-service lubricant and hydraulicfilters and to analyze the debris removed.1.2 This guide suggests techniques to remove,collect andanalyze debris from filters in support of machinery healthcondition monitoring.1.3 Debris removal techniques range from manual to auto-mated.1.4 Analysis techniques vary from visual,particle counting,microscopic,x-ray fluorescence(XRF),atomic emission spec-troscopy(AES),and scanning electron microscopy energydispersive x-rays(SEMEDX).1.5 This guide is suitable for use with the following filtertypes:screw on,metal mesh,and removable diagnostic layerfilters.1.6 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 to use.2.Referenced Documents2.1 ASTM Standards:2D5185 Test Method for Multielement Determination ofUsed and Unused Lubricating Oils and Base Oils byInductively Coupled Plasma Atomic Emission Spectrom-etry(ICP-AES)D6595 Test Method for Determination of Wear Metals andContaminants in Used Lubricating Oils or Used HydraulicFluids by Rotating Disc ElectrodeAtomic Emission Spec-trometryD7669 Guide for Practical Lubricant Condition Data TrendAnalysisD7684 Guide for Microscopic Characterization of Particlesfrom In-Service LubricantsD7685 Practice for In-Line,Full Flow,Inductive Sensor forFerromagnetic and Non-ferromagnetic Wear Debris De-termination and Diagnostics for Aero-Derivative and Air-craft Gas Turbine Engine Bearings1This guide is under the jurisdiction of ASTM Committee D02 on PetroleumProducts,Liquid Fuels,and Lubricants and is the direct responsibility of Subcom-mittee D02.96.06 on Practices and Techniques for Prediction and Determination ofMicroscopic Wear and Wear-related Properties.Current edition approved May 1,2014.Published June 2014.DOI:10.1520/D7919-14.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D7690 Practice for Microscopic Characterization of Par-ticles from In-Service Lubricants by Analytical Ferrogra-phyD7720 Guide for Statistically Evaluating Measurand AlarmLimits when Using Oil Analysis to Monitor Equipmentand Oil for Fitness and ContaminationD7898 Practice for Lubrication and Hydraulic Filter DebrisAnalysis(FDA)for Condition Monitoring of Machinery2.2 Other Documents:TTCP-AER-TP3-TR01-2010 Filter Debris Analysis Guide,July 2010,published by The Technical Cooperation Pro-gram(TTCP)3SAE AIR1828 Guide to Oil System Monitoring in AircraftGas Turbine Engines3.Terminology3.1 Definitions:3.1.1 lubricant condition monitoring,na field of technicalactivity in which selected physical parameters associated withan operating machine are periodically or continuously sensed,measured,and recorded for the interim purpose of reducing,analyzing,comparing,and displaying the data and informationso obtained and for the ultimate purpose of using interim resultto support decisions related to the operation and maintenanceof the machine.3