ASTM_D_933_-_84_2012.pdf

Designation:D93384(Reapproved 2012)Standard Practice forReporting Results of Examination and Analysis of Water-Formed Deposits1This standard is issued under the fixed designation D933;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 covers the manner in which the results ofexamination and analysis for inorganic constituents of depositsformed from waters are to be reported.1.2 While various practices of reporting the analysis ofwater-formed deposits are in use,this practice is intended as arational and comprehensive practice for general application.For use in specific industries or individual cases,molecularcombinations may be useful and desirable.1.3 This standard does not purport to address the safetyconcerns,if any,associated with its use.It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the applicability of regulatorylimitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D887 Practices for Sampling Water-Formed DepositsD1129 Terminology Relating to WaterE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications3.Terminology3.1 DefinitionsFor definitions of terms used in this prac-tice reference should be made to Terminology D1129.4.Significance and Use4.1 The results are used to characterize the scale formed andused to evaluate the quality of water used in the unit.Characterizing the scale will assist in the design of the watertreatment process to avoid further scale buildup.The use ofmodern up-to-date chemical detection units will increase theusefulness of the practice.5.History of Sample5.1 Information regarding the source and history of thesample shall be included in the report of the analysis.Thisinformation should be that specified in Practices D887,asfollows:5.1.1 Name of individual or company supplying sample,5.1.2 Geographic origin of sample,5.1.3 Date and time of sampling,5.1.4 Number of sample,5.1.5 Name and other designation of equipment from whichsample was removed,5.1.6 Precise location from which sample was removed(forexample,exactly what turbine blade),5.1.7 Appearance and extent of deposit prior to removal,5.1.8 Type of depositwhether scale,sludge,biologicaldeposit,or corrosion product as defined in Practices D887,5.1.9 Exact method that was used in removing the sampleand notes concerning any contamination that might haveoccurred during the process,5.1.10 Operating temperature and pressure of liquid orvapor in the equipment that contained the deposit,5.1.11 Type of treatment applied to the water that formedthe deposit or to the water that furnished steam to the affectedzone,5.1.12 An account of discrepancies in operating conditionthat may have contributed to deposition(for example,waterstarving),5.1.13 Results of field tests made on the sample or relatedequipment,and5.1.14 Signature of sampler.6.Physical Characteristics6.1 The report shall include a description of the physicalcharacteristics of the sample,including any peculiarities thatmay be pertinent in its further examination.6.2 Characteristics such as the following may be recorded:color,form,(scaly,slimy,drusy,etc.),texture(oily,smooth,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 Jan.1,2012.Published January 2012.Originallyapproved in 1947.Last previous edition approved in 2007 as D933 84(2007).DOI:10.1520/D0933-84R12.2For 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 friable,gritty,etc.),hardness,magnetic properties(as deter-mined by test with magnet),and structure(amorphous,crys-talline,columnar crystals).7.Completeness and Accuracy of Analysis7.1 The determinations to be reported in a complete analysisshall be those listed in Table 1.For many practical purposes,aless complete analysis will suffice.In other instances thelocation or nature of the deposit or a knowledge of thecomposition of the equipment affected will suggest the need fordeterminations in addition to those listed.7.2 The completeness and accuracy of the analysis shouldbe carefully appraised before reporting.In a complete analysis,the summation of all determinations under oxides,acid radi-cals,ether-extractable matter,carbonaceous matter,and com-bi