1、Designation:D88713(Reapproved 2022)Standard Practices forSampling Water-Formed Deposits1This standard is issued under the fixed designation D887;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 pa
2、rentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These practices cover the sampling of water-formeddeposits for chemical,physical,biological,or radiologicalanalysis.The practices cover both field and
3、laboratory sam-pling.It also defines the various types of deposits.Thefollowing practices are included:SectionsPractice ASampling Water-Formed Deposits From Tubingof Steam Generators and Heat Exchangers8 to 10Practice BSampling Water-Formed Deposits From SteamTurbines11 to 141.2 The general procedur
4、es of selection and removal ofdeposits given here can be applied to a variety of surfaces thatare subject to water-formed deposits.However,the investigatormust resort to his individual experience and judgment inapplying these procedures to his specific problem.1.3 The values stated in inch-pound uni
5、ts are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibilit
6、y 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.SeeSection 7,9.8,9.8.4.6,and 9.14 for specific hazards statements.1.5 This international standard was developed in accor-dance wi
7、th 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.Referenced Documents2.1 ASTM Standards:2D
8、512 Test Methods for Chloride Ion In Water(Withdrawn2021)3D934 Practices for Identification of Crystalline Compoundsin Water-Formed Deposits By X-Ray Diffraction(With-drawn 2022)3D1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD1245 Practice for Examination of Water-Formed De
9、positsby Chemical MicroscopyD1293 Test Methods for pH of WaterD2331 Practices for Preparation and Preliminary Testing ofWater-Formed DepositsD2332 Practice for Analysis of Water-Formed Deposits byWavelength-Dispersive X-Ray FluorescenceD3483 Test Methods forAccumulated Deposition in a SteamGenerator
10、 TubeD4412 Test Methods for Sulfate-Reducing Bacteria in Waterand Water-Formed Deposits3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 biological deposits,nwater-formed deposits of or-ganisms or the products of their life processes.3.1.1.1 Discussion-The biological deposits may
11、 be com-posed of microscopic organisms,as in slimes,or of macro-scopic types such as barnacles or mussels.Slimes are usuallycomposed of deposits of a gelatinous or filamentous nature.3.1.2 corrosion products,na result of chemical or electro-chemical reaction between a metal and its environment.3.1.2
12、.1 DiscussionA corrosion deposit resulting from theaction of water,such as rust,usually consists of insolublematerial deposited on or near the corroded area;corrosion1These practices are under the jurisdiction of ASTM Committee D19 on Waterand are the direct responsibility of Subcommittee D19.03 on
13、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 1,2022.Published July 2022.Originally approvedin 1946.Last previous edition approved in 2013 as D887 13.DOI:10.1520/D0887-13R2
14、2.2For 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.3The last approved version of this historical standard is refere
15、nced onwww.astm.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 Decision on Principles for theDevel
16、opment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1products may,however,be deposited a considerable distancefrom the point at which the metal is undergoing attack.3.1.3 scale,na deposit formed from solution directly inplace upon a surface.3.1.3.1 DiscussionScale is a deposit that usually willretain its physical shape when mechanical means are used toremove it from the surface on which it is deposited.Scal
