ASTM D933-84(2003)
(Practice)Standard Practice for Reporting Results of Examination and Analysis of Water-Formed Deposits
Standard Practice for Reporting Results of Examination and Analysis of Water-Formed Deposits
SIGNIFICANCE AND USE
The results are used to characterize the scale formed and used to evaluate the quality of water used in the unit. Characterizing the scale will assist in the design of the water treatment process to avoid further scale buildup. The use of modern up-to-date chemical detection units will increase the usefulness of the practice.
SCOPE
1.1 This practice covers the manner in which the results of examination and analysis for inorganic constituents of deposits formed from waters are to be reported.
1.2 While various practices of reporting the analysis of water-formed deposits are in use, this practice is intended as a rational and comprehensive practice for general application. For use in specific industries or individual cases, molecular combinations may be useful and desirable.
1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D 933–84(Reapproved2003)
Standard Practice for
Reporting Results of Examination and Analysis of Water-
Formed Deposits
This standard is issued under the fixed designation D 933; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope treatment process to avoid further scale buildup. The use of
modern up-to-date chemical detection units will increase the
1.1 This practice covers the manner in which the results of
usefulness of the practice.
examination and analysis for inorganic constituents of deposits
formed from waters are to be reported.
5. History of Sample
1.2 While various practices of reporting the analysis of
5.1 Information regarding the source and history of the
water-formed deposits are in use, this practice is intended as a
sample shall be included in the report of the analysis. This
rational and comprehensive practice for general application.
information should be that specified in Practices D 887,as
For use in specific industries or individual cases, molecular
follows:
combinations may be useful and desirable.
5.1.1 Name of individual or company supplying sample,
1.3 This standard does not purport to address the safety
5.1.2 Geographic origin of sample,
concerns, if any, associated with its use. It is the responsibility
5.1.3 Date and time of sampling,
of the user of this standard to establish appropriate safety and
5.1.4 Number of sample,
health practices and determine the applicability of regulatory
5.1.5 Name and other designation of equipment from which
limitations prior to use.
sample was removed,
2. Referenced Documents 5.1.6 Precise location from which sample was removed (for
example, exactly what turbine blade),
2.1 ASTM Standards:
5.1.7 Appearance and extent of deposit prior to removal,
D 887 Practices for Sampling Water-Formed Deposits
5.1.8 Type of deposit—whether scale, sludge, biological
D 1129 Terminology Relating to Water
deposit, or corrosion product as defined in Practices D 887,
E29 Practice for Using Significant Digits in Test Data to
5.1.9 Exact method that was used in removing the sample
Determine Conformance with Specifications
and notes concerning any contamination that might have
3. Terminology
occurred during the process,
5.1.10 Operating temperature and pressure of liquid or
3.1 Definitions—For definitions of terms used in this prac-
vapor in the equipment that contained the deposit,
tice reference should be made to Terminology D 1129.
5.1.11 Type of treatment applied to the water that formed
4. Significance and Use
the deposit or to the water that furnished steam to the affected
zone,
4.1 Theresultsareusedtocharacterizethescaleformedand
5.1.12 An account of discrepancies in operating condition
used to evaluate the quality of water used in the unit.
that may have contributed to deposition (for example, water
Characterizing the scale will assist in the design of the water
starving),
5.1.13 Results of field tests made on the sample or related
This practice is under the jurisdiction of ASTM Committee D19 on Water and
equipment, and
is the direct responsibility of Subcommittee D19.03 on Sampling of Water and
5.1.14 Signature of sampler.
Water-Formed Deposits, Analysis of Water for Power Generation and Process,
On-Line Water Analysis, and Surveillance of Water.
6. Physical Characteristics
Current edition approved Sept. 11, 1984. Published November 1984. Originally
approved in 1947. Last previous edition approved in 1984 as D 933 – 84.
6.1 The report shall include a description of the physical
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
characteristics of the sample, including any peculiarities that
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
may be pertinent in its further examination.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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D 933–84 (2003)
6.2 Characteristics such as the following may be recorded: 8. Reporting of Chemical Analysis
color, form, (scaly, slimy, drusy, etc.), texture (oily, smooth,
8.1 All data, except water, shall be reported as percentage
friable, gritty, etc.), hardness, magnetic properties (as deter-
by weight of the dry sample. Water shall be reported on the
mined by test with magnet), and structure (amorphous, crys-
as-received basis.
talline, columnar crystals).
8.2 For convenience in calculation, values for oxides, acid
anhydrides, and combined water may also be expressed on a
7. Completeness and Accuracy of Analysis
basis of chemical equivalents. Values for relative equivalents
7.1 Thedeterminationstobereportedinacompleteanalysis areobtainedbydividingeachvalueofpercentagebyweightby
shall be those listed in Table 1. For many practical purposes, a the equivalent weight of the respective oxide, acid radical, or
less complete analysis will suffice. In other instances the water.
location or nature of the deposit or a knowledge of the 8.3 Quantitative determinations shall be reported to the
compositionoftheequipmentaffectedwillsuggesttheneedfor nearest 0.1 % (8.4).When a quantitative determination is made
determinations in addition to those listed. and a negative result is obtained, it shall be reported as “0.0”
7.2 The completeness and accuracy of the analysis should withanotationastotheamountofsampleusedandthemethod
be carefully appraised before reporting. In a complete analysis, of determination. When a determination has been omitted, but
the heading of the determination is carried in a tabulation with
the summation of all determinations under oxides, acid radi-
cals, ether-extractable matter, carbonaceous matter, and com- determinations of other samples, the absence of a determina-
tionforanyotherspecificsampleshallbeindicatedbyanentry
bined water shall total 100 62%.
7.3 A
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