ASTM D2013-00ae1

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Designation:D2013–00a
Standard Practice for
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Preparing Coal Samples for Analysis
This standard is issued under the fixed designation D 2013; 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 (ε) indicates an editorial change since the last revision or reapproval.
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ε NOTE—Section6.2.2wasrevised,Table1andFig.2werereinstatedintothestandard,Figure3wasupdatedandFig.4,Gross
Sample Preparation for Moisture Determination (Referee Method), was deleted editorially in June 2001.
1. Scope D 4749 Test Method for Performing the Sieve Analysis of
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2 Coal and Designating Coal Size
1.1 This practice covers the reduction and division of gross
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
or divided samples up to and including the individual portions
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poses
for laboratory analysis.
E 177 Practice for Use of the Terms Precision and Bias in
1.2 Reduction and division procedures are prescribed for
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ASTM Test Methods
coals of the following groups:
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E 456 Terminology Relating to Quality and Statistics
1.2.1 Group A includes coals that have been cleaned in all
sizes.
3. Terminology
1.2.2 Group B includes all other coals. Unknown coals are
3.1 Definitions of Terms Specific to This Standard—No
to be considered under Group B.
terms are used which are specific to this practice. Many terms
1.2.3 Group A allows smaller weight laboratory samples to
used in this practice may be found in Terminologies D 121 and
beretainedthanGroupB.Theselowerweightsmaybeusedfor
E 456 and in Practice E 177.
particular coals if they have been shown, by using the
procedures of Annex A1.2, to give a sample preparation and
4. Summary of Practice
analysis variance which is no more than 20 % of the total
4.1 Three processes of sample division and reduction are
analysis variance.
covered as follows:
1.3 This standard does not purport to address all of the
4.1.1 Procedure A—Manual riffles are used for division of
safety concerns, if any, associated with its use. It is the
the sample and mechanical crushing equipment for the reduc-
responsibility of the user of this standard to establish appro-
tion of the sample.
priate safety and health practices and determine the applica-
4.1.2 Procedure B—Mechanical sample dividers are used
bility of regulatory limitations prior to use.
for the division of the sample and mechanical crushing
1.4 The values stated in SI units are to be regarded as
equipment for the reduction of the sample.
standard. The values given in parentheses are provided for
4.1.3 Combined Procedure A and B—The two procedures
information purposes only.
may be combined at any stage.
2. Referenced Documents
5. Significance and Use
2.1 ASTM Standards:
5.1 Other standards are used to collect the gross sample:
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D 121 Terminology of Coal and Coke
Practice D 2234 allows for one division of the gross sample
D 197 Test Method for Sampling and Fineness Test of
before crushing. The mass and top size of the gross or divided
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Pulverized Coal
3 sample collected by using these guides and practices are
D 2234 Practice for Collection of a Gross Sample of Coal
usually too large for chemical or physical testing. Practice
D 3174 TestMethodforAshintheAnalysisSampleofCoal
3 D 2013 provide instructions for reducing and dividing the
and Coke from Coal
3 gross or divided sample, by on-line or off-line processes, or
D 3302 Test Method for Total Moisture in Coal
both, to a top size and mass suitable to the performance of
testing. Any bias in the gross or divided sample before
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This practice is under the jurisdiction of ASTM Committee D05 on Coal and
adherence to this practice will remain in the final sample
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling.
resulting from use of this practice. Therefore, carefully select
Current edition approved Oct. 10, 2000. Published January 2001. Originally
the standard to be used to collect the gross sample.
published as D 2013 – 62 T. Last previous edition D 2013 – 00.
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For more detailed explanation of this practice see Keller, G. E., “Determination
of Quantities Needed in Coal Sample Preparation and Analysis,” Transactions,Vol
232, 1965, pp. 218-226.
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Annual Book of ASTM Standards, Vol 05.06. Annual Book of ASTM Standards, Vol 14.02.
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D2013–00a
5.2 Division and reduction of a sample may occur at more 6.3 Mixing Wheel—One type of a mechanical device used
than one location. Most often, the sample is collected, reduced, for mixing the analysis sample. In this device, the samples are
and divide
...