ASTM D2013-01

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2013 – 01
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 (e) indicates an editorial change since the last revision or reapproval.
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1. Scope Coal and Designating Coal Size
2 E 11 Specification for Wire-Cloth Sieves for Testing Pur-
1.1 This practice covers the reduction and division of gross
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poses
or divided samples up to and including the individual portions
E 177 Practice for Use of the Terms Precision and Bias in
for laboratory analysis.
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ASTM Test Methods
1.2 Reduction and division procedures are prescribed for
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E 456 Terminology Relating to Quality and Statistics
coals of the following groups:
1.2.1 Group A includes coals that have been cleaned in all
3. Terminology
sizes.
3.1 Definitions of Terms Specific to This Standard—No
1.2.2 Group B includes all other coals. Unknown coals are
terms are used which are specific to this practice. Many terms
to be considered under Group B.
used in this practice may be found in Terminologies D 121 and
1.2.3 Group A allows smaller weight laboratory samples to
E 456 and in Practice E 177.
be retained than Group B. These lower weights may be used for
particular coals if they have been shown, by using the
4. Summary of Practice
procedures of Annex A1.2, to give a sample preparation and
4.1 Three processes of sample division and reduction are
analysis variance which is no more than 20 % of the total
covered as follows:
analysis variance.
4.1.1 Procedure A—Manual riffles are used for division of
1.3 This standard does not purport to address all of the
the sample and mechanical crushing equipment for the reduc-
safety concerns, if any, associated with its use. It is the
tion of the sample.
responsibility of the user of this standard to establish appro-
4.1.2 Procedure B—Mechanical sample dividers are used
priate safety and health practices and determine the applica-
for the division of the sample and mechanical crushing
bility of regulatory limitations prior to use.
equipment for the reduction of the sample.
1.4 The values stated in SI units are to be regarded as
4.1.3 Combined Procedure A and B—The two procedures
standard. The values given in parentheses are provided for
may be combined at any stage.
information purposes only.
5. Significance and Use
2. Referenced Documents
5.1 Other standards are used to collect the gross sample:
2.1 ASTM Standards:
Practice D 2234 allows for one division of the gross sample
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D 121 Terminology of Coal and Coke
before crushing. The mass and top size of the gross or divided
D 197 Test Method for Sampling and Fineness Test of
sample collected by using these guides and practices are
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Pulverized Coal
3 usually too large for chemical or physical testing. Practice
D 2234 Practice for Collection of a Gross Sample of Coal
D 2013 provide instructions for reducing and dividing the
D 3174 Test Method for Ash in the Analysis Sample of Coal
3 gross or divided sample, by on-line or off-line processes, or
and Coke from Coal
3 both, to a top size and mass suitable to the performance of
D 3302 Test Method for Total Moisture in Coal
testing. Any bias in the gross or divided sample before
D 4749 Test Method for Performing the Sieve Analysis of
adherence to this practice will remain in the final sample
resulting from use of this practice. Therefore, carefully select
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the standard to be used to collect the gross sample.
This practice is under the jurisdiction of ASTM Committee D05 on Coal and
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling.
5.2 Division and reduction of a sample may occur at more
Current edition approved Nov. 10, 2001. Published January 2002. Originally
than one location. Most often, the sample is collected, reduced,
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published as D 2013 – 62 T. Last previous edition D 2013 – 00a .
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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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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 2013
and divided (one or more times) by use of a mechanical in closed containers attached to the rim of a wheel at an angle
sampling system. The remai
...