ASTM_D_6301_-_13.pdf

Designation:D630113Standard Practice forCollection of On-Line Composite Samples of SuspendedSolids and Ionic Solids in Process Water1This standard is issued under the fixed designation D6301;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 applicable for sampling condensedsteam or water,such as boiler feedwater,for the collection ofsuspended solids and(optional)ionic solids using a 0.45-mmembrane filter(suspended solids)and ion exchange media(ionic solids).As the major suspended component found inmost boiler feedwaters is some form of corrosion product fromthe preboiler system,the device used for this practice iscommonly called a corrosion product sampler.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:2D1066 Practice for Sampling SteamD1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD1971 Practices for Digestion of Water Samples for Deter-mination of Metals by FlameAtomicAbsorption,GraphiteFurnaceAtomicAbsorption,PlasmaEmissionSpectroscopy,or Plasma Mass SpectrometryD2332 Practice for Analysis of Water-Formed Deposits byWavelength-Dispersive X-Ray FluorescenceD2777 Practice for Determination of Precision and Bias ofApplicable Test Methods of Committee D19 on WaterD3370 Practices for Sampling Water from Closed ConduitsD3864 Guide for On-Line Monitoring Systems for WaterAnalysis3.Terminology3.1 DefinitionsFor definitions of terms used in thispractice,refer to Terminology D1129.3.2 Definitions of Terms Specific to This Standard:3.2.1 corrosion product sampler,na device used to collectintegrated samples of suspended solids and(as an option)ionicsolids.3.2.1.1 DiscussionIt consists of a flow totalizer that accu-rately measures the amount of sample passing through thedevice and a 0.45-m pore size membrane filter.Adding asecond filter for ion exchange resin impregnated membranesallows for collecting ionic solids.3.2.2 ionic solids,nincludes all matter that will passthrough a 0.45-m pore size filter and may be captured onanion,or cation ion exchange membranes,or both.3.2.3 suspended solids,nincludes all matter that is re-moved by a 0.45-m pore size filter.4.Summary of Practice4.1 A typical sampling apparatus,or corrosion productsampler,is used to obtain integrated,representative samples ofsuspended solids and ionic solids using a 0.45-m membranefilter and ion exchange membranes.The sampling is accom-plished at system operating pressure or after pressurereduction,and sample temperature of 50C.The practiceutilizes a modified stainless steel high pressure filter housing toaccommodate a 47-mm diameter filter(for suspended solids)and if desired,ion exchange membranes(for ionic solids).Thesample collection system(corrosion product sampler)is de-signed and operated specifically for quantitative collection ofsuspended solids and ionic solids.An important feature of thesampler is the flow totalizer,which accurately determines thetotal volume of sample that has passed through the sampler,regardless of changes in flowrate or pressure during thecollection period.Control and pressure reducing valves andmetering devices are downstream of the filter housing toeliminate the possible contribution of suspended solids andionic solids from these components to the sample stream.1This practice is under the jurisdiction of ASTM Committee D19 on Water andis the direct responsibility of Subcommittee D19.03 on Sampling Water andWater-Formed Deposits,Analysis of Water for Power Generation and Process Use,On-Line Water Analysis,and Surveillance of Water.Current edition approved July 15,2013.Published August 2013.Originallyapproved in 1998.Last previous edition approved in 2008 as D6301 08.DOI:10.1520/D6301-13.2For 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 FIG.1 Simplified Flow Diagram for Corrosion Product SamplerD6301 132 Additional flow may bypass the filter housing,so that flowswithin the sample lines are maintained within required range(see Guide D3864).If a single sampling point is not represen-tative due to lack of homogeneity in the process fluid(the waterbeing sa