ASTM D2234/D2234M-03e1

Standard Practice for Collection of a Gross Sample of Coal

SCOPE
1.1 This practice covers procedures for the collection of a sample under various conditions of sampling. The sample is to be crushed and further prepared for analysis in accordance with Method D 2013. However, the procedures for dividing large samples before any crushing are given in this practice.
1.2 This practice describes general and special purpose sampling procedures for coals (1) by size and condition of preparation (for example, mechanically cleaned coal or raw coal) and (2) by sampling characteristics.
1.3 The values stated in either SI units or inch-pound units are to be reagarded seperately as standard. The values stated in each system may not be exact equivalents; therefore, use each system independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.4 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 limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Dec-2003
• ICS: 73.040 - Coals
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.23 - Sampling

Relations

• Replaces: ASTM D2234/D2234M-03 - Standard Practice for Collection of a Gross Sample of Coal
• Effective Date: 01-Jan-2004
• Replaced By: ASTM D2234/D2234M-07 - Standard Practice for Collection of a Gross Sample of Coal
• Effective Date: 01-May-2007
• Referred By: ASTM D291/D291M-20 - Standard Test Method for Bulk Density of Crushed Bituminous Coal
• Effective Date: 01-Jan-2004
• Referred By: ASTM D6883-17 - Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
• Effective Date: 01-Jan-2004
• Referred By: ASTM D75/D75M-19 - Standard Practice for Sampling Aggregates
• Effective Date: 01-Jan-2004
• Referred By: ASTM D4596-22 - Standard Practice for Collection of Channel Samples of Coal in a Mine
• Effective Date: 01-Jan-2004
• Referred By: ASTM E300-03(2022) - Standard Practice for Sampling Industrial Chemicals
• Effective Date: 01-Jan-2004
• Referred By: ASTM D6796-21e1 - Standard Practice for Production of Coal, Coke and Coal Combustion Samples for Interlaboratory Studies
• Effective Date: 01-Jan-2004
• Referred By: ASTM D5744-18 - Standard Test Method for Laboratory Weathering of Solid Materials Using a Humidity Cell
• Effective Date: 01-Jan-2004
• Referred By: ASTM D4371/D4371M-06(2019)e1 - Standard Test Method for Determining the Washability Characteristics of Coal
• Effective Date: 01-Jan-2004
• Referred By: ASTM D5515-22 - Standard Test Method for Determination of the Swelling Properties of Bituminous Coal Using a Dilatometer
• Effective Date: 01-Jan-2004
• Referred By: ASTM E701-80(2018) - Standard Test Methods for Municipal Ferrous Scrap
• Effective Date: 01-Jan-2004
• Referred By: ASTM D4931-06(2017) - Standard Test Method for Gross Moisture in Green Petroleum Coke
• Effective Date: 01-Jan-2004
• Referred By: ASTM D7430/D7430M-22 - Standard Practice for Mechanical Sampling of Coal
• Effective Date: 01-Jan-2004
• Referred By: ASTM D6543-20e1 - Standard Guide to the Evaluation of Measurements Made by Online Coal Analyzers
• Effective Date: 01-Jan-2004

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
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Designation:D 2234/D 2234M–03
Standard Practice for
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Collection of a Gross Sample of Coal
This standard is issued under the fixed designation D 2234/D 2234M; 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.
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e NOTE—Sections 8.2.1.2 and 8.3.1.2 were editorially revised in January 2004.
INTRODUCTION
Data obtained from coal samples are used in establishing price, controlling mine and cleaning plant
operations, allocating production costs, and determining plant or component efficiency. The task of
obtaining a sample of reasonable weight to represent an entire lot presents a number of problems and
emphasizes the necessity for using standard sampling procedures.
Coal is one of the most difficult of materials to sample, varying in composition from noncombus-
tible particles to those which can be burned completely, with all gradations in between. The task is
further complicated by the use of the analytical results, the sampling equipment available, the quantity
to be represented by the sample, and the degree of precision required.
This practice gives the overall requirements for the collection of coal samples. The wide varieties
ofcoal-handlingfacilitiesprecludethepublicationofdetailedproceduresforeverysamplingsituation.
The proper collection of the sample involves an understanding and consideration of the physical
character of the coal, the number and weight of increments, and the overall precision required.
1. Scope 2. Referenced Documents
2
1.1 This practice covers procedures for the collection of a 2.1 ASTM Standards:
sample under various conditions of sampling. The sample is to D 121 Terminology of Coal and Coke
becrushedandfurtherpreparedforanalysisinaccordancewith D 2013 Method for Preparing Coal Samples for Analysis
Method D 2013. However, the procedures for dividing large D 6518 Practice for Bias Testing a Mechanical Coal Sam-
samples before any crushing are given in this practice. pling System
1.2 This practice describes general and special purpose E 177 Practice for Use of the Terms Precision and Bias in
sampling procedures for coals (1) by size and condition of ASTM Test Methods
preparation (for example, mechanically cleaned coal or raw E 456 Terminology Relating to Quality and Statistics
coal) and (2) by sampling characteristics.
3. Terminology
1.3 The values stated in either SI units or inch-pound units
3.1 Definitions of Terms Specific to This Standard:
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, use each 3.1.1 accuracy:
3.1.1.1 generally—a term used to indicate the reliability of
system independently of the other. Combining values from the
a sample, a measurement, or an observation.
two systems may result in nonconformance with the standard.
1.4 This standard does not purport to address all of the 3.1.1.2 specifically—a measure of closeness of agreement
between an experimental result and the true value. Example:
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- the observed and true sulfur content of a coal consignment.
This measure is affected by chance errors as well as by bias.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1 2
These methods are under the jurisdiction of ASTM Committee D05 on Coal For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and Coke and are the direct responsibility of Subcommittee D05.23 on Sampling. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Current edition approved June 10, 2003. Published August 2003. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 1963. Last previous edition approved in 2002 as D 2234 – 02a. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 2234/D 2234M–03
3.1.2 activation interval—for a falling stream or cross-belt of increments required for a gross sample for both general and
cutter, the time from the beginning of movement for taking an special-purpose sampling.
increment, to the beginning of movement for taking of the next
4.4 The procedures appear in the following order:
increment.
Test Method Section
3.1.3 mechanical sampling system—a single machine or
Sampling of Coals Based on Size and Condition of Preparation 8.1
series of interconnected machines whose purpose is to extract
...