ASTM D2234/D2234M-03

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: 09-Jun-2003
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.23 - Sampling

Relations

• Replaces: ASTM D2234/D2234M-02a - Standard Practice for Collection of a Gross Sample of Coal
• Effective Date: 10-Jun-2003
• Replaced By: ASTM D2234/D2234M-03e1 - Standard Practice for Collection of a Gross Sample 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: 10-Jun-2003
• Referred By: ASTM D121-15 - Standard Terminology of Coal and Coke
• Effective Date: 10-Jun-2003
• Referred By: ASTM E300-03(2022) - Standard Practice for Sampling Industrial Chemicals
• Effective Date: 10-Jun-2003
• Referred By: ASTM D1412/D1412M-20 - Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
• Effective Date: 10-Jun-2003
• Referred By: ASTM D4931-06(2017) - Standard Test Method for Gross Moisture in Green Petroleum Coke
• Effective Date: 10-Jun-2003
• Referred By: ASTM D4930-23 - Standard Test Method for Dust Control Material on Calcined Petroleum Coke
• Effective Date: 10-Jun-2003
• Referred By: ASTM D4749/D4749M-87(2019)e1 - Standard Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
• Effective Date: 10-Jun-2003
• Referred By: ASTM D75/D75M-19 - Standard Practice for Sampling Aggregates
• Effective Date: 10-Jun-2003
• Referred By: ASTM D7430/D7430M-22 - Standard Practice for Mechanical Sampling of Coal
• Effective Date: 10-Jun-2003
• Referred By: ASTM D5233-92(2017) - Standard Test Method for Single Batch Extraction Method for Wastes
• Effective Date: 10-Jun-2003
• Referred By: ASTM D5004-11(2017) - Standard Test Method for Real Density of Calcined Petroleum Coke by Xylene Displacement
• Effective Date: 10-Jun-2003
• Referred By: ASTM E701-80(2018) - Standard Test Methods for Municipal Ferrous Scrap
• Effective Date: 10-Jun-2003
• Referred By: ASTM D441-07(2019)e1 - Standard Test Method of Tumbler Test for Coal
• Effective Date: 10-Jun-2003

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
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 (e) indicates an editorial change since the last revision or reapproval.
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
1.1 This practice covers procedures for the collection of a 2.1 ASTM Standards:
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sample under various conditions of sampling. The sample is to D 121 Terminology of Coal and Coke
2
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-
2
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
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sampling procedures for coals (1) by size and condition of ASTM Test Methods
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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
two systems may result in nonconformance with the standard. a sample, a measurement, or an observation.
3.1.1.2 specifically—a measure of closeness of agreement
1.4 This standard does not purport to address all of the
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. 3.1.2 activation interval—for a falling stream or cross-belt
cutter, the time from the beginning of movement for taking an
increment, to the beginning of movement for taking of the next
increment.
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These methods are under the jurisdiction of ASTM Committee D05 on Coal
and Coke and are the direct responsibility of Subcommittee D05.23 on Sampling.
2
Current edition approved June 10, 2003. Published August 2003. Originally Annual Book of ASTM Standards, Vol 05.06.
3
approved in 1963. Last previous edition approved in 2002 as D 2234 – 02a. Annual Book of ASTM Standards, Vol 14.02.
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
3.1.3 mechanical sampling system—a single machine or
Test Method Section
series of interconnected machines whose purpose is to extract
Sampling of Coals Based on Size and Condition of Preparation 8.1
mechanically, or process (divide and reduce), or a combination
General-Purpose Sampling Procedure 8.1.1
thereof, a sample of coal.
Number and Weight of Increments 8.1.1.2
Number of Gross Samples 8.1.1.4
3.1.4 cross-belt sampler—a single sampling machine or
Special-Purpose Sampling 8.1.2
component of a mechanical sampling system designed to
Number and Weight of Increments 8.1
...