1、Designation:D716421Standard Practice forOn-line/At-line Heating Value Determination of GaseousFuels by Gas Chromatography1This standard is issued under the fixed designation D7164;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the y
2、ear 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.1.Scope1.1 This practice is for the determination of heating value inhigh methane content gaseous fuels such as natural gas usi
3、ngan on-line/at-line gas chromatograph.1.2 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included 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
4、 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 standard was developed in accor-dance with internationally recognized principles on standard-ization established i
5、n 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.Referenced Documents2.1 ASTM Standards:2D1070 Test Methods for Relative Density of Gaseous FuelsD1945 Test Method f
6、or Analysis of Natural Gas by GasChromatographyD1946 Practice for Analysis of Reformed Gas by GasChromatographyD3588 Practice for Calculating Heat Value,CompressibilityFactor,and Relative Density of Gaseous FuelsD3764 Practice for Validation of the Performance of ProcessStream Analyzer SystemsD4150
7、Terminology Relating to Gaseous FuelsD4626 Practice for Calculation of Gas ChromatographicResponse FactorsD5287 Practice for Automatic Sampling of Gaseous FuelsD5503 Practice for Natural Gas Sample-Handling and Con-ditioning Systems for Pipeline Instrumentation(With-drawn 2017)3D6122 Practice for Va
8、lidation of the Performance of Multi-variate Online,At-Line,Field and Laboratory InfraredSpectrophotometer,and Raman Spectrometer Based Ana-lyzer SystemsD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD6621
9、Practice for Performance Testing of Process Analyz-ers for Aromatic Hydrocarbon MaterialsD7833 Test Method for Determination of Hydrocarbons andNon-Hydrocarbon Gases in Gaseous Mixtures by GasChromatographyE260 Practice for Packed Column Gas ChromatographyE594 Practice for Testing Flame Ionization D
10、etectors Usedin Gas or Supercritical Fluid ChromatographyE1510 Practice for Installing Fused Silica Open TubularCapillary Columns in Gas Chromatographs2.2 ISO Standards4ISO 6976 Natural Gas Calculation of Calorific Values,Density,Relative Density and Wobbe Indices From Com-positionISO 7504 Gas Analy
11、sis-Vocabulary2.3 Gas Processors Association Standards:5GPA 2172 Calculation of Gross Heating Value,RelativeDensity,Compressibility and Theoretical HydrocarbonLiquid Content for Natural Gas Mixtures for CustodyTransfer3.Terminology3.1 For definitions of general terms used in D03 GaseousFuels standar
12、ds,refer to Terminology D4150.1This practice is under the jurisdiction of ASTM Committee D03 on GaseousFuels and is the direct responsibility of Subcommittee D03.12 on On-Line/At-LineAnalysis of Gaseous Fuels.Current edition approved April 1,2021.Published May 2021.Originallyapproved in 2005.Last pr
13、evious edition approved in 2015 as D7164 10(2015).DOI:10.1520/D7164-21.2For 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 web
14、site.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from International Organization for Standardization(ISO),1,ch.dela Voie-Creuse,Case postale 56,CH-1211,Geneva 20,Switzerland,http:/www.iso.ch.5Available from Gas Processors Association(GPA),66 America
15、n Plaza,Suite700,Tulsa,OK 74135,http:/www.gpaglobal.org.Copyright 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 standardization established in the
16、 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 Practice4.1 A representative sample of the gaseous fuel is extractedfrom a process pipe or a pipeline and is transferred in a timelymanner to an analyzer sampling system.After appropriateconditioning steps that maintain the samples integrity arecompleted,a precise volume of sample is injected onto anappropr
