ASTM D6609-17

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6609 − 17
Standard Guide for
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Part-Stream Sampling of Coal
This standard is issued under the fixed designation D6609; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.2 Federal Standards:
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Federal Mine and Safety and Health Act of 1977
1.1 This guide covers general principles for obtaining a
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Occupational Safety and Health Act of 1970
grosssampleofcoalbytakingincrementsfrompartofastream
of coal rather than from the entire stream to be sampled. The
3. Terminology
usefulness of results from this guide will vary greatly depend-
3.1 Definitions—For additional definitions of terms, refer to
ing on such factors as top size of the coal, size consistency of
Terminology D121, Practice D2013, Terminology E456, and
the coal, variability of the coal, and such logistical factors as
Practice D2234/D2234M.
the flow rate of the coal in process and physical accessibility of
the sampling station. 3.2 Definitions of Terms Specific to This Standard:
3.2.1 part-stream sampling, n—a method of coal sampling
1.2 This guide should be used only when it is not possible to
in which collection of individual increments does not encom-
use a method of sampling that produces a probability sample.
pass the full cross section of the coal stream.
1.3 Sample preparation procedures involving crushing are
4. Summary of Guide
contained in Practice D2013.
4.1 Part-stream sampling is accomplished by collecting
1.4 The values stated in SI units are to be regarded as
increments from part of a stream of coal for the purpose of
standard. The values in parentheses are for information only.
acquiring a gross sample.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Significance and Use
responsibility of the user of this standard to establish appro-
5.1 This guide provides instructions for sampling by col-
priate safety, health, and environmental practices and deter-
lecting individual increments from part of a cross section of a
mine the applicability of regulatory requirements prior to use.
moving stream of coal, as opposed to collection of individual
1.6 This international standard was developed in accor-
increments by removal of a full cross section of material. The
dance with internationally recognized principles on standard-
use of part-stream sampling, and the detailed procedures for
ization established in the Decision on Principles for the
each case, should be agreed upon in advance by all parties
Development of International Standards, Guides and Recom-
concerned. Samples collected by use of this guide are not
mendations issued by the World Trade Organization Technical
probability samples. The user is cautioned that samples of this
Barriers to Trade (TBT) Committee.
type do not satisfy the minimum requirements for probability
sampling and as such cannot be used to obtain any meaningful
2. Referenced Documents
statistical inferences such as the sampling precision, standard
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2.1 ASTM Standards:
error, or bias.
D121 Terminology of Coal and Coke
5.2 All parties should be cautioned that manual sampling of
D2013 Practice for Preparing Coal Samples for Analysis
coal from a moving stream might not enable sampling of the
D2234/D2234M Practice for Collection of a Gross Sample
material that is furthermost from the point of entry into stream
of Coal
by the sampling device.
E456 Terminology Relating to Quality and Statistics
6. Increment Collection Classification
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This guide is under the jurisdiction of ASTM Committee D05 on Coal and
6.1 Three distinct classifications of part-stream sampling
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling.
Current edition approved Oct. 15, 2017. Published October 2017. Originally methodsarerecognizedbythisguide,inorderofpreference,as
approved in 2000. Last previous edition approved in 2015 as D6609-15 DOI:
listed below:
10.1520/D6609-17.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
Standards volume information, refer to the standard’s Document Summary page on Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
the ASTM website. www.dodssp.daps.mil.
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