ASTM D6970-03(2013)e1
(Practice)Standard Practice for Collection of Calcined Petroleum Coke Samples for Analysis
Standard Practice for Collection of Calcined Petroleum Coke Samples for Analysis
SIGNIFICANCE AND USE
4.1 Data obtained from calcined petroleum coke samples are used in commercial transactions, controlling plant operations, and allocating production costs. Use of standard sampling procedures facilitates the task of obtaining a sample to represent an entire lot of calcined petroleum coke.
4.2 This practice gives general procedures for the collection of calcined petroleum coke samples and is intended to provide useful methodology for the collection of a sample to represent a lot of calcined petroleum coke. The variety of calcined petroleum coke handling facilities and sampling applications preclude the publication of detailed procedures for every sampling situation.
SCOPE
1.1 This practice covers procedures for the collection of calcined petroleum coke samples from conveyor belts or transfer points. These samples may be used for physical and chemical analyses.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.3 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
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D6970 − 03 (Reapproved 2013)
Standard Practice for
Collection of Calcined Petroleum Coke Samples for
Analysis
This standard is issued under the fixed designation D6970; 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.
ε NOTE—Referenced Documents and 7.1 were editorially updated in October 2013.
1. Scope 3.1.1.1 Discussion—Example: the observed and true sulfur
content of a calcined petroleum coke consignment. This
1.1 This practice covers procedures for the collection of
measure is affected by chance errors as well as by bias.
calcined petroleum coke samples from conveyor belts or
3.1.2 analysis sample, n—the reduced and divided represen-
transfer points. These samples may be used for physical and
tative portion of the bulk sample, prepared for use in the
chemical analyses.
laboratory.
1.2 The values stated in SI units are to be regarded as
3.1.3 gross sample, n—a sample representing one lot of
standard. The values given in parentheses are for information
petroleum coke and composed of a number of increments on
only.
which no reduction or division has been performed.
1.3 This standard does not purport to address all of the
3.1.4 increment, n—a small portion of a lot collected by one
safety concerns, if any, associated with its use. It is the
operation of a sampling device and normally combined with
responsibility of the user of this standard to establish appro-
other increments from the lot to make a gross sample.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.1.5 lot, n—a quantity of coke represented by a gross
sample.
2. Referenced Documents
3.1.6 representative sample, n—a sample collected in such a
2.1 ASTM Standards:
manner that the size consist is the same as the lot.
D4702 Practice for Quality Management of Mechanical
3.1.7 sample, n—a quantity of petroleum coke taken from a
Coal Sampling Systems (Withdrawn 2008)
larger quantity for the purpose of estimating properties or
D5709 Test Method for Sieve Analysis of Petroleum Coke
composition of the larger quantity.
D6969 Practice for Preparation of Calcined Petroleum Coke
3.1.8 sample preparation, n—the process that may include
Samples for Analysis
drying,crushing,division,andmixingofagrosssampleforthe
purpose of obtaining an unbiased analysis sample.
3. Terminology
3.1.9 size consist, n—the particle size distribution of a
3.1 Definitions of Terms Specific to This Standard:
material; for example, petroleum coke.
3.1.1 accuracy, n—generally, a term used to indicate the
3.1.10 top size, n—the size of the smallest opening of one
reliability of a sample, a measurement, or an observation.
sieve of a series upon which is cumulatively retained a total of
Specifically, a measure of closeness of agreement between an
less than 5 % of the sample. This defined top size is not to be
experimental result and the true value.
confused with the size of the largest particle in a lot.
4. Significance and Use
This practice is under the jurisdiction of ASTM Committee D02 on Petroleum
Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcom-
4.1 Data obtained from calcined petroleum coke samples
mittee D02.05 on Properties of Fuels, Petroleum Coke and Carbon Material.
are used in commercial transactions, controlling plant
Current edition approved Oct. 1, 2013. Published October 2013.Originally
approved in 2003. Last previous edition approved in 2008 as D6970 – 03 (2008).
operations, and allocating production costs. Use of standard
DOI: 10.1520/D6970-03R13E01.
sampling procedures facilitates the task of obtaining a sample
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
to represent an entire lot of calcined petroleum coke.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
4.2 This practice gives general procedures for the collection
the ASTM website.
of calcined petroleum coke samples and is intended to provide
The last approved version of this historical standard is referenced on
www.astm.org. useful methodology for the collection of a sample to represent
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D6970 − 03 (2013)
a lot of calcined petroleum coke. The variety of calcined 5.5 Quantities Represented:
petroleum coke handling facilities and sampling applications 5.5.1 Collect a gross sample for each 2000 metric tons or
preclude the publication of detailed procedures for every fraction thereof, or in case of larger tonnage, as may be
sampling situation. mutually agreed upon by all involved parties. Practical
experience, however, indicates the maximum size of a lot of
5. Organization of Sampling Operation
calcined petroleum coke to be represented by one gross sample
5.1 Place of Sampling:
shall not exceed 15 000 metric tons (see Table 1). Separate
5.1.1 Sample calcined petroleum coke while it is being
samples shall be taken from each lot of calcined petroleum
loaded into or unloaded from railcars, ships, barges, or trucks,
coke arising from a different source or known to be of different
or when discharged from kilns, supply bins, grab buckets, belt
quality or size.
conveyors, or other conveying equipment. The sample should
5.6 Distribution of Increments:
be collected as close to the point of interest as possible.
5.6.1 It is essential that the increments be distributed
5.1.2 Samples collected from the stationary surface of
throughout the lot to be sampled. This distribution is related to
calcined petroleum coke in stockpiles, bins, railcars, trucks,
the entire volume of the lot, not merely its surface or any linear
ships, or barges may be unreliable because of size segregation
direction through it or over it. If circumstances prevent the
and shall not be used for determining conformance to specifi-
sampler from applying this principle, then the lot is sampled
cations unless the purchaser and the seller agree. If it is
only in part, and the gross sample is representative only of this
necessary to collect a stationary sample of calcined petroleum
part.Thespacingofincrementsshallbevariedifthepossibility
coke, use a sampling method mutually acceptable to all
exists that increment collection may get in phase with the
involved parties.
sequence of calcined petroleum coke variability. Example:
5.2 Collection of Gross Sample:
routinesamplingwhereincrementcollectionfromacontinuous
5.2.1 Collect increments systematically, and with such fre- stream (conveyor belt), and where increment collection is
quency to produce a representative sample mutually acceptable
automatic and its sequence coincides with the highs or lows in
to all involved parties.
the content of fines.
5.2.2 It is recommended the gross sample contain at least
6. Sampling Requirements
the required minimum number of increments as outlined in
6.1 Dimensions of Sampling Device— The opening of the
Table 1.
sampling device shall be at least three times the top-size of the
5.2.3 The quantity of sample to be taken assumes that the
calcined petroleum coke. For practical reasons, however, it is
top size of the coke is 25 mm (1 in.) or less.
recommended that the opening of any sampling d
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