ASTM D2234/D2234M-02

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-2002
• ICS: 75.160.10 - Solid fuels
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.23 - Sampling

Relations

• Replaced By: ASTM D2234/D2234M-02a - Standard Practice for Collection of a Gross Sample of Coal
• Effective Date: 10-Oct-2002
• Referred By: ASTM D6883-17 - Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles
• Effective Date: 10-Jun-2002
• Referred By: ASTM D2013/D2013M-21 - Standard Practice for Preparing Coal Samples for Analysis
• Effective Date: 10-Jun-2002
• Referred By: ASTM D6234-13(2020) - Standard Test Method for Shake Extraction of Mining Waste by the Synthetic Precipitation Leaching Procedure
• Effective Date: 10-Jun-2002
• Referred By: ASTM D346/D346M-11(2019)e1 - Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
• Effective Date: 10-Jun-2002
• Referred By: ASTM D4793-09(2017) - Standard Test Method for Sequential Batch Extraction of Waste with Water
• Effective Date: 10-Jun-2002
• Referred By: ASTM D291/D291M-20 - Standard Test Method for Bulk Density of Crushed Bituminous Coal
• Effective Date: 10-Jun-2002
• Referred By: ASTM D6791-22 - Standard Test Method for Determination of Grain Stability of Calcined Petroleum Coke
• Effective Date: 10-Jun-2002
• Referred By: ASTM D979/D979M-22 - Standard Practice for Sampling Asphalt Mixtures
• Effective Date: 10-Jun-2002
• Referred By: ASTM D3987-12(2020) - Standard Practice for Shake Extraction of Solid Waste with Water
• Effective Date: 10-Jun-2002
• Referred By: ASTM D8145-18 - Standard Practice for Sampling of Green Petroleum Coke
• Effective Date: 10-Jun-2002
• Referred By: ASTM D121-15 - Standard Terminology of Coal and Coke
• Effective Date: 10-Jun-2002
• Referred By: ASTM D441-07(2019)e1 - Standard Test Method of Tumbler Test for Coal
• Effective Date: 10-Jun-2002
• Referred By: ASTM D5004-11(2017) - Standard Test Method for Real Density of Calcined Petroleum Coke by Xylene Displacement
• Effective Date: 10-Jun-2002
• 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-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 2234 / D 2234M–02
Standard Practice for
1
Collection of a Gross Sample of Coal
This standard is issued under the fixed designation D 2234 / D 2234 M; 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
of coal-handling facilities preclude the publication of detailed procedures for every sampling situation.
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.
2
1. Scope D 2013 Method of Preparing Coal Samples for Analysis
D 6518 Practice for Bias Testing a Mechanical Coal Sam-
1.1 This practice covers procedures for the collection of a
2
pling System
sample under various conditions of sampling. The sample is to
E 177 Practice for Use of the Terms Precision and Bias in
be crushed and further prepared for analysis in accordance with
3
ASTM Test Methods
Method D 2013. However, the procedures for dividing large
2
E 456 Terminology Relating to Quality and Statistics
samples before any crushing are given in this practice.
1.2 This practice describes general and special purpose
3. Terminology
sampling procedures for coals (1) by size and condition of
3.1 Definitions of Terms Specific to This Standard:
preparation (for example, mechanically cleaned coal or raw
3.1.1 accuracy:
coal) and (2) by sampling characteristics.
3.1.1.1 generally—a term used to indicate the reliability of
1.3 The values stated in either SI units or inch-pound units
a sample, a measurement, or an observation.
are to be reagarded seperately as standard. The values stated in
3.1.1.2 specifically—a measure of closeness of agreement
each system may not be exact equivalents; therefore, use each
between an experimental result and the true value. Example:
system independently of the other. Combining values from the
the observed and true sulfur content of a coal consignment.
two systems may result in nonconformance with the standard.
This measure is affected by chance errors as well as by bias.
1.4 This standard does not purport to address all of the
3.1.2 mechanical sampling system—a single machine or
safety concerns, if any, associated with its use. It is the
series of interconnected machines whose purpose is to extract
responsibility of the user of this standard to establish appro-
mechanically, or process (divide and reduce), or a combination
priate safety and health practices and determine the applica-
thereof, a sample of coal.
bility of regulatory limitations prior to use.
3.1.3 cross-belt sampler—a single sampling machine or
2. Referenced Documents component of a mechanical sampling system designed to
extract an increment directly from a conveyor belt surface by
2.1 ASTM Standards:
sweeping a sampling device (cutter) through the material on
D 121 Terminology of Coal and Coke
the conveyor.
3.1.4 falling-stream sampler—a single sampling machine or
component of a mechanical sampling system designed to
1
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, 2002. Published September 2002. Originally Annual Book of ASTM Standards, Vol 05.06.
e1 3
published as D 2234 – 63 T. Last previous edition D 2234 – 00 . 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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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 2234/D 2234M–02
extract an increment
...