ASTM D6609-08(2015)
(Guide)Standard Guide for Part-Stream Sampling of Coal
Standard Guide for Part-Stream Sampling of Coal
SIGNIFICANCE AND USE
5.1 This guide provides instructions for sampling by collecting individual increments from part of a cross section of a moving stream of coal, as opposed to collection of individual increments by removal of a full cross section of material. The use of part-stream sampling, and the detailed procedures for each case, should be agreed upon in advance by all parties concerned. Samples collected by use of this guide are not probability samples. The user is cautioned that samples of this type do not satisfy the minimum requirements for probability sampling and as such cannot be used to obtain any meaningful statistical inferences such as the sampling precision, standard error, or bias.
5.2 All parties should be cautioned that manual sampling of coal from a moving stream might not enable sampling of the material that is furthermost from the point of entry into stream by the sampling device.
SCOPE
1.1 This guide covers general principles for obtaining a gross sample of coal by taking increments from part of a stream of coal rather than from the entire stream to be sampled. The usefulness of results from this guide will vary greatly depending on such factors as top size of the coal, size consistency of the coal, variability of the coal, and such logistical factors as the flow rate of the coal in process and physical accessibility of the sampling station.
1.2 This guide should be used only when it is not possible to use a method of sampling that produces a probability sample.
1.3 Sample preparation procedures involving crushing are contained in Practice D2013.
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.
1.5 This standard does not purport to address all of 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 requirements prior to use.
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Designation: D6609 − 08 (Reapproved 2015)
Standard Guide for
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 3. Terminology
1.1 This guide covers general principles for obtaining a
3.1 Definitions—For additional definitions of terms, refer to
grosssampleofcoalbytakingincrementsfrompartofastream
Terminology D121, Practice D2013, Terminology E456, and
of coal rather than from the entire stream to be sampled. The
Practice D2234/D2234M.
usefulness of results from this guide will vary greatly depend-
3.2 Definitions of Terms Specific to This Standard:
ing on such factors as top size of the coal, size consistency of
3.2.1 part-stream sampling, n—a method of coal sampling
the coal, variability of the coal, and such logistical factors as
in which collection of individual increments does not encom-
the flow rate of the coal in process and physical accessibility of
pass the full cross section of the coal stream.
the sampling station.
1.2 This guide should be used only when it is not possible to
4. Summary of Guide
use a method of sampling that produces a probability sample.
4.1 Part-stream sampling is accomplished by collecting
1.3 Sample preparation procedures involving crushing are
increments from part of a stream of coal for the purpose of
contained in Practice D2013.
acquiring a gross sample.
1.4 The values stated in SI units are to be regarded as
standard. The values in parentheses are for information only.
5. Significance and Use
1.5 This standard does not purport to address all of the
5.1 This guide provides instructions for sampling by col-
safety concerns, if any, associated with its use. It is the
lecting individual increments from part of a cross section of a
responsibility of the user of this standard to establish appro-
moving stream of coal, as opposed to collection of individual
priate safety and health practices and determine the applica-
increments by removal of a full cross section of material. The
bility of regulatory requirements prior to use.
use of part-stream sampling, and the detailed procedures for
2. Referenced Documents
each case, should be agreed upon in advance by all parties
concerned. Samples collected by use of this guide are not
2.1 ASTM Standards:
probability samples. The user is cautioned that samples of this
D121 Terminology of Coal and Coke
type do not satisfy the minimum requirements for probability
D2013 Practice for Preparing Coal Samples for Analysis
sampling and as such cannot be used to obtain any meaningful
D2234/D2234M Practice for Collection of a Gross Sample
of Coal statistical inferences such as the sampling precision, standard
error, or bias.
E456 Terminology Relating to Quality and Statistics
2.2 Federal Standards:
5.2 All parties should be cautioned that manual sampling of
Federal Mine and Safety and Health Act of 1977
coal from a moving stream might not enable sampling of the
Occupational Safety and Health Act of 1970
material that is furthermost from the point of entry into stream
by the sampling device.
This guide is under the jurisdiction of ASTM Committee D05 on Coal and
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling. 6. Increment Collection Classification
Current edition approved April 1, 2015. Published May 2015. Originally
approved in 2000. Last previous edition approved in 2008 as D6609-08 DOI: 6.1 Three distinct classifications of part-stream sampling
10.1520/D6609-08R15.
methodsarerecognizedbythisguide,inorderofpreference,as
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
listed below:
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
6.1.1 Condition C-1—The case in which groups of succes-
the ASTM website.
sive part-stream increments are taken so that the increments
.Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
within each group encompass the full cross section of the coal
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
www.dodssp.daps.mil. stream.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6609 − 08 (2015)
6.1.2 Condition C-2—The case in which groups of succes- usually the best choice for locating the point of sampling.
sive part-stream increments are collected from different posi- Certain other factors may also need to be considered, such as
tions relative to the full cross section of the coal stream but the
accessibility, the volume and velocity of falling material, the
increments within each group do not encompass the full cross
potential for particle rebounding, the relative location to the
section.
sample preparation equipment, and variations in the coal
6.1.3 Condition C-3—The case in which groups of succes-
stream produced by crushers, screens, or other parts of the
sive part-stream increments are collected from the same
system.
relative position to the full cross section of the coal stream.
7.2.2 Sampling Pattern—Ideally, a sampling pattern should
ensure that all equal mass units in a lot being sampled have an
7. Organization and Planning of Sampling Operations
equal chance of being selected by the primary increment
7.1 Considerations When Sampling from a Coal Stream:
sampling device; however, this is not possible if all equal mass
7.1.1 Safety Considerations—If the sampling device is to be
units are not available for selection as is the case when only
used manually, safety and ease of operation should be carefully
part of the stream is sampled. Because of this, all interested
considered. For example, aluminum can be used to minimize
parties should agree upon the details concerning the pattern to
the weight of the device and special handles fabricated to
be used. Increments should be of approximately equal mass
facilitate its use. Shovels with loop handles should be used
when obtained at the same flow rate. The type of increment
only with extreme caution. There is the potential to catch and
collection should not be changed during the collection of a
drag the sampling device and sampler while manually sam-
pling a moving stream. Sampling personnel should be pro- gross sample.Adifferent sampling device may deliver different
tected from moving parts such as conveyors or belt idlers. A mass increments into the same gross sample and thus impair
safety harness for the sampling personnel may be an appropri-
the ability of the sample to maintain the correct proportionality
ate safety device in some sampling situations. The user of this
for the flow rate being sampled.
guide must be aware that each sampling
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6609 − 08 D6609 − 08 (Reapproved 2015)
Standard Guide for
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
1.1 This guide covers general principles for obtaining a gross sample of coal by taking increments from part of a stream of coal
rather than from the entire stream to be sampled. The usefulness of results from this guide will vary greatly depending on such
factors as top size of the coal, size consistency of the coal, variability of the coal, and such logistical factors as the flow rate of
the coal in process and physical accessibility of the sampling station.
1.2 This guide should be used only when it is not possible to use a method of sampling that produces a probability sample.
1.3 Sample preparation procedures involving crushing are contained in Practice D2013.
1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.
1.5 This standard does not purport to address all of 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
requirements prior to use.
2. Referenced Documents
2.1 ASTM Standards:
D121 Terminology of Coal and Coke
D2013 Practice for Preparing Coal Samples for Analysis
D2234/D2234M Practice for Collection of a Gross Sample of Coal
E456 Terminology Relating to Quality and Statistics
2.2 Federal Standards:
Federal Mine and Safety and Health Act of 1977
Occupational Safety and Health Act of 1970
3. Terminology
3.1 Definitions—For additional definitions of terms, refer to Terminology D121, Practice D2013, Terminology E456, and
Practice D2234/D2234M.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 part-stream sampling, n—a method of coal sampling in which collection of individual increments does not encompass the
full cross section of the coal stream.
4. Summary of Guide
4.1 Part-stream sampling is accomplished by collecting increments from part of a stream of coal for the purpose of acquiring
a gross sample.
5. Significance and Use
5.1 This guide provides instructions for sampling by collecting individual increments from part of a cross section of a moving
stream of coal, as opposed to collection of individual increments by removal of a full cross section of material. The use of
This guide is under the jurisdiction of ASTM Committee D05 on Coal and Coke and is the direct responsibility of Subcommittee D05.23 on Sampling.
Current edition approved May 1, 2008April 1, 2015. Published May 2008May 2015. Originally approved in 2000. Last previous edition approved in 20072008 as
D6609-07-08 DOI: 10.1520/D6609-08.10.1520/D6609-08R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
.Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://www.dodssp.daps.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6609 − 08 (2015)
part-stream sampling, and the detailed procedures for each case, should be agreed upon in advance by all parties concerned.
Samples collected by use of this guide are not probability samples. The user is cautioned that samples of this type do not satisfy
the minimum requirements for probability sampling and as such cannot be used to obtain any meaningful statistical inferences such
as the sampling precision, standard error, or bias.
5.2 All parties should be cautioned that manual sampling of coal from a moving stream might not enable sampling of the
material that is furthermost from the point of entry into stream by the sampling device.
6. Increment Collection Classification
6.1 Three distinct classifications of part-stream sampling methods are recognized by this guide, in order of preference, as listed
below:
6.1.1 Condition C-1—The case in which groups of successive part-stream increments are taken so that the increments within
each group encompass the full cross section of the coal stream.
6.1.2 Condition C-2—The case in which groups of successive part-stream increments are collected from different positions
relative to the full cross section of the coal stream but the increments within each group do not encompass the full cross section.
6.1.3 Condition C-3—The case in which groups of successive part-stream increments are collected from the same relative
position to the full cross section of the coal stream.
7. Organization and Planning of Sampling Operations
7.1 Considerations When Sampling from a Coal Stream:
7.1.1 Safety Considerations—If the sampling device is to be used manually, safety and ease of operation should be carefully
considered. For example, aluminum can be used to minimize the weight of the device and special handles fabricated to facilitate
its use. Shovels with loop handles should be used only with extreme caution. There is the potential to catch and drag the sampling
device and sampler while manually sampling a moving stream. Sampling personnel should be protected from moving parts such
as conveyors or belt idlers. A safety harness for the sampling personnel may be an appropriate safety device in some sampling
situations. The user of this guide must be aware that each sampling situation has its own unique safety requirements that should
be thoroughly reviewed before the start of sample collection. This standard does not purport to address all safety requirements;
however, users are urged to comply with all Federal requirements such as those contained in the Federal Mine Safety and Health
Act of 1977, the Occupational Safety and Health Act of 1970, as well as state and local regulations and site specific safety policies
and procedures.
7.1.2 Width of Sampling Device—The width of the sampling device shall be a minimum of 2 ⁄2 times the nominal top size of
the coal being sampled.
7.1.3 Depth of Sampling Device—When determining the depth of the sampling device, two considerations are: (1) top size of
the coal and (2) feed rate of the coal. The depth of the sampling device shall be sufficient so that it does not overfill during
increment collection. Thus, the higher feed rate, the greater the depth required and the larger the increment obtained. The increment
may become too large for one person to handle even at moderate to low feed rates.
7.1.
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