ASTM D6542-00

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Designation:D6542–00
Standard Practice for
Tonnage Calculation of Coal in a Stockpile
This standard is issued under the fixed designation D 6542; 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.
1. Scope 3. Terminology
1.1 This practice is used to calculate the mass (commonly 3.1 Definitions—There are no terms in this practice that
expressed in tons) of coal in a storage pile using the volume of require new or other than dictionary definitions.
the stockpile by Test Method D 6172 and the density of the
4. Significance and Use
coal determined by Test Method D 6347/D 6347M.
1.2 This practice is applicable to all ranks of coal. 4.1 The physical inventory of tons of coal in a stockpile, as
calculated by this practice, may be used for accounting and tax
1.3 The user of this standard determines when the density
values provided by the survey require an adjustment for purposes.
4.2 The inventory results may be compared to other esti-
moisture.
1.4 The values stated in either inch-pounds or SI units are to mates of the inventory, such as:
4.2.1 Tons from a previous inventory less tons shipped or
be regarded separately as standard. Within the text, the SI units
are shown in brackets.The values stated in each system are not consumed.
4.2.2 Tons estimated to have been received (from conveyor,
exact equivalents; therefore, each system must be used inde-
pendently of the other. Combining values from the two systems rail or truck weights) less tons shipped or consumed.
can result in nonconformance with the specification.
5. Procedure
1.5 This standard does not purport to address all of the
5.1 Determine if the reported tonnage should be on an
safety concerns, if any, associated with its use. It is the
as-determined basis, or some other moisture adjusted basis. If
responsibility of the user of this standard to establish appro-
the moisture content was determined on the density-
priate safety and health practices and determine the applica-
measurement samples (see Test Method D 6347/D 6347M),
bility of regulatory limitations prior to use.
then the density data (and the tonnage) can be calculated to a
2. Referenced Documents
dry basis or to another moisture-containing basis.
5.1.1 Use Eq 1 or Eq 2 to adjust the as-determined density
2.1 ASTM Standards:
D 2013 Method of Preparing Coal Samples for Analysis to a different moisture basis. The percent moisture determined
inaccordancewithTestMethodsD 3173,D 3302,orD 2013in
D 3173 Test Method for Moisture in theAnalysis Sample of
Coal and Coke thesamplescollectedaccordingTestMethodD 6347/D 6347M
is used in Eq 1 or Eq 2.
D 3180 Practice for Calculating Coal and Coke Analyses
from As-Determined to Different Basis 5.1.2 Use Eq 1 to adjust the average density values to a dry
basis:
D 3302 Test Method for Total Moisture in Coal
D 6172 Test Method for Determining the Volume of Bulk
M
det
D 5 D 3 1 2 (1)
S D
dry det
Materials Using Contours of Cross Sections Created by
Direct Operator Compilation Using Photogrammetric Pro-
where:
cedures
3 3
D = density in lb/ft (kg/m ) on a dry basis,
dry
D 6347/D 6347M Test Method for Determination of Bulk
3 3
D = density in lb/ft (kg/m ) on an as-determined mois-
det
Density of Coal Using Nuclear Backscatter Depth Density
2 ture basis, and
Methods
M = % moisture, as determined on the density sample.
det
5.1.3 Use Eq 2 to adjust the as-determined density values to
some other moisture basis such as as-received, as-shipped,
This practice is under th
...