ASTM D6542-05

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Designation:D6542–05
Standard Practice for
1
Tonnage Calculation of Coal in a Stockpile
This standard is issued under the fixed designation D6542; 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 D6347/D6347M Test Method for Determination of Bulk
Density of Coal Using Nuclear Backscatter Depth Density
1.1 This practice is used to calculate the mass (commonly
Methods
expressed in tons) of coal in a storage pile using the volume of
the stockpile byTest Method D6172 and the density of the coal
3. Terminology
determined by Test Method D6347/D6347M.
3.1 Definitions—There are no terms in this practice that
1.2 This practice is applicable to all ranks of coal.
require new or other than dictionary definitions. Many terms in
1.3 The user of this standard determines when the density
this Practice may be found in Terminology D121.
values provided by the survey require an adjustment for
moisture.
4. Significance and Use
1.4 The values stated in either inch-pounds or SI units are to
4.1 The physical inventory of tons of coal in a stockpile, as
be regarded separately as standard.Within the text, the SI units
calculated by this practice, may be used for accounting and tax
are shown in brackets.The values stated in each system are not
purposes.
exact equivalents; therefore, each system must be used inde-
4.2 The inventory results may be compared to other esti-
pendentlyoftheother.Combiningvaluesfromthetwosystems
mates of the inventory, such as:
can result in nonconformance with the specification.
4.2.1 Tons from a previous inventory less tons shipped or
1.5 This standard does not purport to address all of the
consumed.
safety concerns, if any, associated with its use. It is the
4.2.2 Tons estimated to have been received (from conveyor,
responsibility of the user of this standard to establish appro-
rail or truck weights) less tons shipped or consumed.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
5. Procedure
5.1 Determine if the reported tonnage should be on an
2. Referenced Documents
2 as-determined basis, or some other moisture adjusted basis. If
2.1 ASTM Standards:
the moisture content was determined on the density-
D121 Terminology of Coal and Coke
measurementsamples(seeTestMethodD6347/D6347M),then
D2013 Practice for Preparing Coal Samples for Analysis
the density data (and the tonnage) can be calculated to a dry
D3173 Test Method for Moisture in theAnalysis Sample of
basis or to another moisture-containing basis.
Coal and Coke
5.1.1 Use Eq 1 or Eq 2 to adjust the as-determined density
D3302 Test Method for Total Moisture in Coal
to a different moisture basis. The percent moisture determined
D6172 Test Method for Determining the Volume of Bulk
in accordance with Test Methods D3173, D3302,or D2013 in
Materials Using Contours or Cross Sections Created by
the samples collected according Test Method D6347/D6347M
Direct Operator Compilation Using Photogrammetric Pro-
is used in Eq 1 or Eq 2.
cedures
5.1.2 Use Eq 1 to adjust the average density values to a dry
basis:
1
This practice is under the jurisdiction of ASTM Committee D-5 on Coal and
M
det
Coke and is the direct responsibility of Subcommittee D05.07 on Physical D 5 D 3 1 2 (1)
S D
dry det
100
Characteristics of Coal.
Current edition approved May 1, 2005. Published May 2005. Originally
where:
approved in 2000. Last previous edition approved in 2000 as D6542–00 DOI:
3 3
D = density in lb/ft (kg/m ) on a dry basis,
10.1520/D6542-05. dry
3 3
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or D = density in lb/ft (kg/m ) on an as-determined mois-
det
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ture basis, and
Standards volume information, refer to the standard’s Document Summary page on
M = % moisture, as determined on the density sample.
det
the ASTM website.
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D6542–05
5.1.3 Use Eq 2 to adjust the as-determined density values to 6.2 The tolerance for the inventory results combines the
some other moisture basis such as as-received, as-shipped, tolerances, in %, of the density survey data and the volumetric
data according to Eq 4:
as-stockpiled, etc.
2 2
100 2 M
adj C 5 =D 1 A (4)
D 5 D 3 (2)
S D
adj det
100 2 M
det
where:
where:
C = combined tolerances of density and volume in %,
3 3
D = densityinlb/ft (kg/m )onadesiredmoisturebasis,
adj
D = tolerance of density test in
...