ASTM_D_7166_-_10_2015.pdf

Designation:D716610(Reapproved 2015)Standard Practice forTotal Sulfur Analyzer Based On-line/At-line for SulfurContent of Gaseous Fuels1This standard is issued under the fixed designation D7166;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.1.Scope1.1 This practice is for the determination of total sulfur fromvolatile sulfur-containing compounds in high methane orhydrogen content gaseous fuels using on-line/at-line instru-mentation.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 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:2D1070 Test Methods for Relative Density of Gaseous FuelsD1072 Test Method for Total Sulfur in Fuel Gases byCombustion and Barium Chloride TitrationD3246 Test Method for Sulfur in Petroleum Gas by Oxida-tive MicrocoulometryD3609 Practice for Calibration Techniques Using Perme-ation TubesD3764 Practice for Validation of the Performance of ProcessStream Analyzer SystemsD4298 Guide for Intercomparing Permeation Tubes to Es-tablish TraceabilityD4468 Test Method for Total Sulfur in Gaseous Fuels byHydrogenolysis and Rateometric ColorimetryD5287 Practice for Automatic Sampling of Gaseous FuelsD5453 Test Method for Determination of Total Sulfur inLight Hydrocarbons,Spark Ignition Engine Fuel,DieselEngine Fuel,and Engine Oil by Ultraviolet FluorescenceD5503 Practice for Natural Gas Sample-Handling and Con-ditioning Systems for Pipeline InstrumentationD5504 Test Method for Determination of Sulfur Compoundsin Natural Gas and Gaseous Fuels by Gas Chromatogra-phy and ChemiluminescenceD6122 Practice for Validation of the Performance of Multi-variate Online,At-Line,and Laboratory Infrared Spectro-photometer Based Analyzer SystemsD6299 Practice for Applying Statistical Quality Assuranceand Control Charting Techniques to Evaluate AnalyticalMeasurement System PerformanceD6621 Practice for Performance Testing of Process Analyz-ers for Aromatic Hydrocarbon MaterialsD6667 Test Method for Determination of Total VolatileSulfur in Gaseous Hydrocarbons and Liquefied PetroleumGases by Ultraviolet FluorescenceD6920 Test Method for Total Sulfur in Naphthas,Distillates,Reformulated Gasolines,Diesels,Biodiesels,and MotorFuels by Oxidative Combustion and Electrochemical De-tection2.2 ISO Standards3ISO 7504 Gas Analysis-Vocabulary3.Terminology3.1 Definitions:3.1.1 at-line instrumentinstrumentation requiring operatorinteraction that samples gas directly from the pipeline.3.1.2 calibration gas mixture,na certified gas mixturewith known composition used for the calibration of a measur-ing instrument or for the validation of a measurement or gasanalytical method.3.1.2.1 DiscussionCalibration Gas Mixtures are the ana-logues of measurement standards in physical metrology(ref-erence ISO 7504 paragraph 4.1).3.1.3 continuous fuel monitorinstrument that samples gasdirectly from the pipeline on a continuous or semi-continuousbasis.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 June 1,2015.Published July 2015 Originally approvedin 2005.Last previous edition approved in 2010 as D716610.DOI:10.1520/D7166-10R15.2For 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.3Available from International Organization for Standardization(ISO),1,ch.dela Voie-Creuse,Case postale 56,CH-1211,Geneva 20,Switzerland,http:/www.iso.ch.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.4 direct samplingsampling where there is no directconnection between the medium to be sampled and theanalytical unit.3.1.5 in-line instrumentinstrument with an active elementinstalled in a pipeline,which is used to measure pipelinecontents or conditions.3.1.6 on-line instrumentinstrument that samples gas di-rectly from a pipeline,but is installed externally.3.1.7 reference gas mixture,na certified gas mixture withknown composition used as a reference standard from whichother compositional data are derived.3.1.7.1 DiscussionReference Gas Mixtures are the ana-logues of measurement standards of reference standards(ref-erence ISO 7504 paragraph 4.1.1).3.1.8 total reduced sulfur(TRS)concentration su