ASTM D6883-17
(Practice)Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
SIGNIFICANCE AND USE
5.1 These guidelines provide procedures for manually collecting gross samples from beneath the exposed surface of coal in railroad cars, barges, trucks, or stockpiles taking into account the wide variety of conditions that may be encountered. The samples are further processed for the laboratory to provide estimations of the coal quality. The use of this practice is conditional upon agreement among all interested parties concerning all relevant details of sample collection before sampling begins. These include, but are not limited to: lot size; number and mass of increments; the size, shape, and manipulation of the increment collection devices; location of increment collection site or sites; circumstances under which increments are not to be collected or suspended; and safety precautions. It is preferable that such agreements be in writing. The user is cautioned that samples so obtained do not represent material below the point of penetration.
SCOPE
1.1 This practice covers procedures for obtaining a manual gross sample from beneath the surface of coal in railroad cars, barges, trucks, or stockpiles. These procedures are to be used to provide gross samples for estimating the quality of the coal. The gross samples are to be crushed, divided, and further prepared for analysis in accordance with Practice D2013.
1.2 This practice provides instruction for sampling beneath the exposed surface coal to a depth of approximately 61 cm (24 in.). Collect samples at this depth to get below the surface of the material, since drying and oxidation may have occurred at, or near the surface. Changes in moisture, in particle size, and in other properties continue to occur deeper in the coal and, although not as drastic as near the surface, will cause the method to be biased. The user should review the conditions of the coal (weather conditions, prior transport, settling time, and so forth, see 8.1) so that the interested parties can agree that potential biases are not overly great or that some adjustment in specifications is warranted. Sample increments collected from the surface layer(s) of coal in railroad cars, barges, or stockpiles are classified condition “D” (see Practice D2234/D2234M, Increment Collection Classification). It is a good practice to require that “details of sampling procedure shall be agreed upon in advance by all parties concerned” whenever collection of sample increments falls under condition “D.” This practice offers a sampling procedure that parties may use to meet requirements of Practice D2234/D2234M for condition “D.” The practice does not produce samples that satisfy precision requirements of Practice D2234/D2234M general-purpose sampling, or Practice D2234/D2234M special-purpose sampling.
1.3 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 draw statistical inferences such as precision, standard error, or bias.
1.4 This sampling method is intended for use only when sampling by more reliable methods that provide a probability sample is not possible.
1.5 The quantities stated in either acceptable SI units or in inch-pound units are regarded separately as standard. The quantities stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining quantities in any way.
1.6 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, health, environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 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 ...
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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: D6883 − 17
Standard Practice for
Manual Sampling of Stationary Coal from Railroad Cars,
1
Barges, Trucks, or Stockpiles
This standard is issued under the fixed designation D6883; 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 1.4 This sampling method is intended for use only when
sampling by more reliable methods that provide a probability
1.1 This practice covers procedures for obtaining a manual
sample is not possible.
gross sample from beneath the surface of coal in railroad cars,
barges,trucks,orstockpiles.Theseproceduresaretobeusedto 1.5 The quantities stated in either acceptable SI units or in
provide gross samples for estimating the quality of the coal.
inch-pound units are regarded separately as standard. The
The gross samples are to be crushed, divided, and further quantities stated in each system may not be exact equivalents;
prepared for analysis in accordance with Practice D2013.
therefore,eachsystemmustbeusedindependentlyoftheother,
without combining quantities in any way.
1.2 This practice provides instruction for sampling beneath
1.6 This standard does not purport to address all of the
theexposedsurfacecoaltoadepthofapproximately61cm(24
in.). Collect samples at this depth to get below the surface of safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
the material, since drying and oxidation may have occurred at,
or near the surface. Changes in moisture, in particle size, and priate safety, health, environmental practices and determine
in other properties continue to occur deeper in the coal and, the applicability of regulatory limitations prior to use.
although not as drastic as near the surface, will cause the
1.7 This international standard was developed in accor-
method to be biased. The user should review the conditions of
dance with internationally recognized principles on standard-
the coal (weather conditions, prior transport, settling time, and
ization established in the Decision on Principles for the
so forth, see 8.1) so that the interested parties can agree that
Development of International Standards, Guides and Recom-
potential biases are not overly great or that some adjustment in
mendations issued by the World Trade Organization Technical
specifications is warranted. Sample increments collected from
Barriers to Trade (TBT) Committee.
the surface layer(s) of coal in railroad cars, barges, or stock-
piles are classified condition “D” (see Practice D2234/
2. Referenced Documents
D2234M, Increment Collection Classification). It is a good
2
2.1 ASTM Standards:
practice to require that “details of sampling procedure shall be
D121 Terminology of Coal and Coke
agreed upon in advance by all parties concerned” whenever
D2013 Practice for Preparing Coal Samples for Analysis
collectionofsampleincrementsfallsundercondition“D.”This
D2234/D2234M Practice for Collection of a Gross Sample
practice offers a sampling procedure that parties may use to
of Coal
meet requirements of Practice D2234/D2234M for condition
D4749 Test Method for Performing the Sieve Analysis of
“D.” The practice does not produce samples that satisfy
Coal and Designating Coal Size
precision requirements of Practice D2234/D2234M general-
D4916 PracticeforMechanicalAugerSampling(Withdrawn
purpose sampling, or Practice D2234/D2234M special-purpose
3
2008)
sampling.
E105 Practice for Probability Sampling of Materials
1.3 The user is cautioned that samples of this type do not
E177 Practice for Use of the Terms Precision and Bias in
satisfytheminimumrequirementsforprobabilitysamplingand
ASTM Test Methods
as such cannot be used to draw statistical inferences such as
E456 Terminology Relating to Quality and Statistics
precision, standard error, or bias.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This practice is under the jurisdiction of ASTM Committee D05 on Coal and contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 15, 2017. Published October 2017. Originally the ASTM website.
3
approved in 2003. Last previous edition approved in 2012 as D6883–04(2012). The last approved version of this historical standard is referenced on
DOI: 10.1520/D6883
...
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: D6883 − 04 (Reapproved 2012) D6883 − 17
Standard Practice for
Manual Sampling of Stationary Coal from Railroad Cars,
1
Barges, Trucks, or Stockpiles
This standard is issued under the fixed designation D6883; 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 practice covers procedures for obtaining a manual gross sample from beneath the surface of coal in railroad cars,
barges, trucks, or stockpiles. These procedures are to be used to provide gross samples for estimating the quality of the coal. The
gross samples are to be crushed, divided, and further prepared for analysis in accordance with Practice D2013.
1.2 This practice provides instruction for sampling beneath the exposed surface coal to a depth of approximately 61 cm (24 in.).
Collect samples at this depth to get below the surface of the material, since drying and oxidation may have occurred at, or near
the surface. Changes in moisture, in particle size, and in other properties continue to occur deeper in the coal and, although not
as drastic as near the surface, will cause the method to be biased. The user should review the conditions of the coal (weather
conditions, prior transport, settling time, and so forth, see 8.1) so that the interested parties can agree that potential biases are not
overly great or that some adjustment in specifications is warranted. Sample increments collected from the surface layer(s) of coal
in railroad cars, barges, or stockpiles are classified condition “D” (see Practice D2234/D2234M, Increment Collection
Classification). It is a good practice to require that “details of sampling procedure shall be agreed upon in advance by all parties
concerned” whenever collection of sample increments falls under condition “D.” This practice offers a sampling procedure that
parties may use to meet requirements of Practice D2234/D2234M for condition “D.” The practice does not produce samples that
satisfy precision requirements of Practice D2234/D2234M general-purpose sampling, or Practice D2234/D2234M special-purpose
sampling.
1.3 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 draw statistical inferences such as precision, standard error, or bias.
1.4 This sampling method is intended for use only when sampling by more reliable methods that provide a probability sample
is not possible.
1.5 The quantities stated in either acceptable SI units or in inch-pound units are regarded separately as standard. The quantities
stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without
combining quantities in any way.
1.6 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 healthsafety, health, environmental practices and determine the
applicability of regulatory limitations prior to use.
1.7 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.
2. Referenced Documents
2
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
D4749 Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
1
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.
Current edition approved Nov. 1, 2012Oct. 15, 2017. Published December 2012October 2017. OrginallyOriginally approved in 2003. Last previous edition approved in
20042012 as D6883–04.D6883–04(2012). DOI: 10.1520/D6883-04R12.10.1520/D6883-17.
2
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.
Copyright © ASTM International, 100 Ba
...
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