GB/T 483-2007 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 483-2007 | English | 85 |
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General rules for analytical and testing methods of coal
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| GB/T 483-1998 | English | 319 |
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General rules for analytical and testing methods of coal
| Obsolete |
| GB 483-1987 | English | 279 |
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General rules for analytical and testing methods of coal
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GB/T 483-2007: General rules for analytical and testing methods of coal---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT483-2007
GB
ICS 73.0404
D 21
NATIONAL STANDARD
Replacing. GB/T 483-1998
General Rules for Analytical and
Testing Methods of Coal
(ISO 1213-2.1992 Solid mineral fuels - Vocabulary - Part 2.
Terms relating to sampling, testing and analysis, NEQ)
Issued on. NOVEMBER 1, 2007
Implemented on. JUNE 1, 2008
Jointly issued by. General Administration of Quality Supervision,
Inspection and Quarantine (AQSIQ);
Standardization Administration (SAC) of the
People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative References... 5
3 Terms and Definitions... 6
3.2 Terms and Definitions for Analysis Of General Physical and Chemical
Properties... 11
3.3 Terms and Definitions for Technological Characteristic Test of Coal... 16
3.4 Terms and Definitions for Result Expression of Coal Analysis Test... 21
3.5 Terms and Definitions for Common Mathematical Statistics of Coal
Analysis Test... 22
4 Coal Sample... 24
4.1 Sampling and Preparation of Coal Sample... 24
4.2 Preservation of Coal Sample... 24
4.3 Reserve Coal Sample... 25
4.4 Sampling for Analysis Test... 25
5 Solution and Its Concentration... 25
5.1 Solution... 25
5.2 Solution Concentration... 25
6 Determination... 26
6.1 Determination Times... 26
6.2 Moisture Determination Term... 27
7 Expression of Test Result... 27
7.1 Symbol for Result Expression... 27
7.2 Base Conversion... 30
7.3 Result Report... 31
8 Method Precision... 33
9 Test Record and Test Report... 34
9.1 Test Record... 34
9.2 Test Report... 35
Foreword
This Standard corresponds to BS 1016-100.1999 "Methods for Analysis and
Testing of Coal and Coke - Part 100.General Introduction and Methods for
Reporting Results" and ISO 1213-2.1992 "Solid Mineral Fuels - Vocabulary -
Part 2.Terms Relating to Sampling, Testing and Analysis". The consistency
degree of the standard and the above 2 standards is not equivalent. The main
differences are as follows.
- The technical contents of this Standard only include "3 Definition and Symbol",
"5 Result Report Basis" and "Result Expression" in BS 1016-100.1999.In
addition, "Coal Sample", "Determination" and "Solution Concentration" are
added.
- Some terms relevant to the coal analysis test in ISO 1213-2.1992 are adopted
as part of Terms and Definitions in this Standard. According to ISO 1213-2.1992
“Hard Coal and Coke - Mechanical Sampling - Part 1.General Introduction",
some terms and definitions in this Standard are modified.
This Standard replaces GB/T 483-1998 "General Rules for Analytical and
Testing Methods of Coal".
Compared with GB/T 483-1998, The following modifications are made in this
Standard.
- "Terms and Definitions" is added (Chapter 3 in this edition);
- “Method precision - the statistical calculation formula for the repeatability limit
and reproducibility critical difference” is added (Chapter 5 in Edition-1998;
Chapter 8 in this edition);
- The list of relevant standards is deleted in "Scope" (Chapter 1 in this edition).
This Standard was proposed by the China National Coal Association.
This Standard shall be under the jurisdiction of the National Technical
Committee on Coal of Standardization Administration of China.
Drafting organization of this Standard. the Coal Analysis Laboratory of Coal
Research Institute.
Chief drafting staffs of this Standard. Shi Yuying, and Duan Yunlong.
The previous editions replaced by this Standard are as follows.
- GB 483-1981, GB 483-1987, and GB/T 483-1998.
NATIONAL STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
Replacing GB/T 483-1998
General Rules for Analytical and
Testing Methods of Coal
1 Scope
This Standard specifies the following contents relevant to coal analysis test.
terms and definitions, symbols, analysis test of coal sample, solution
concentration, determination, test result expression, result conversion, method
precision and test record.
This Standard is applicable to various coal analysis test method standards,
documents, books and periodicals, teaching materials and manuals.
2 Normative References
The following standards contain provisions which, through reference in this text,
constitute provisions of this Standard. For dated reference, subsequent
amendments (excluding correction) or revisions of these publications do not
apply. However, the parties who enter into agreement based on this Standard
are encouraged to investigate the possibility of applying the most recent editions
of the standards. For undated references, the latest edition of the normative
document referred to applies.
GB 474 Method for Preparation of Coal Sample
GB 475 Sampling for Commercial Coal
GB/T 6379.2 Accuracy (Trueness and Precision) of Measurement Methods
and Results Part 2.Basic Method for the Determination of Repeatability and
Reproducibility of a Standard Measurement Method (GB/T 6379.2-2004, ISO
5725-2.1994, IDT)
GB/T19494.1 Mechanical Sampling of Coal - Part 1.Method for Sampling
(GB/T 19494.1-2004, ISO 13909-1.2001, ISO 13909-2.2001, ISO
13909-3.2001, NEQ)
3 Terms and Definitions
For the purpose of this Standard, the following terms and definitions apply.
3.1 Terms and Definitions for Coal Sampling and Sample Preparation
3.1.1 Coal sample
A portion of representative coal taken out of coal for determining some features
of coal.
3.1.2 Seam-sample of coal
Coal sample taken from one seam in the excavating working face, exploring
tunnel or gallery as required.
3.1.10 Common sample of coal
Coal sample taken for multiple tests.
3.1.11 Moisture sample of coal
Coal sample taken specifically for the determination of total moisture.
3.1.12 Air-dried sample of coal
Coal sample reaching air drying state.
3.1.13 General-analysis test sample of coal
Coal sample, crushed to the particle size less than 0.2mm, reaching the air
drying state and used for the determination of most physical and chemical
properties.
4 Coal Sample
4.1 Sampling and Preparation of Coal Sample
The coal sample for analysis test (hereinafter referred to as coal sample) is
taken according to GB/T 19494.1 or GB 474; and prepared according to GB/T
19494.2 or GB 475.
4.2 Preservation of Coal Sample
Moisture sample of coal shall be put in the non-absorbent and airtight sealed
container; general analysis test sample of coal shall be put in the tight vessel
after the sample reaches air-dried state.
4.3 Reserve Coal Sample
Reserve coal sample is taken separately in some stage of the original coal
sample preparation, and shall be in as less brokenness and division as possible
with the particle size and quality in accordance with the requirements of the
relevant standard(s).
5 Solution and Its Concentration
5.1 Solution
As for the solution applied in the coal analysis test, all the solutions with water as
the solvent are referred as "aqueous solution" shortened as "solution"; as for the
solution with other liquids as the solvent, the solvent name is put before
"solution", e.g. the solution with ethyl alcohol (or benzene) as the solvent is
referred to as "ethyl alcohol (or benzene) solution".
5.2 Solution Concentration
The following are the commonly applied solution concentration in coal analysis
tests.
5.2.3 Mass concentration
The solute mass divided by solution volume, expressed by gram per liter or its
multiple, fraction unit, e.g. g /L, mg/ml.
5.2.4 Volume ratio or mass ratio
Volume ratio or mass ratio between one reagent and another reagent (or water,
expressed by (V1+V2) or (m1+m2), e.g.
6 Determination
6.1 Determination Times
Except special requirements, two times of determination (it is generally duplicate
determination) shall be conducted on the same coal sample in the analysis test
for each item. If the difference value of two determination values does not
exceed repeatability limit T, the arithmetic mean of the determination values
shall be taken as the final result;
6.2 Moisture Determination Term
6.2.1 The total moisture shall be determined after the coal sample preparation;
if the determination cannot be conducted immediately, the coal sample shall be
weighed accurately and placed in the vessel required in Section 4.2 before the
determination conducted as soon as possible.
7 Expression of Test Result
7.1 Symbol for Result Expression
7.1.1 Item symbol
As for the coal analysis tests, the first letters or the abbreviations of the English
names for all the items of analysis tests are adopted, and the element symbols
or molecular formula of all the chemical constituents are taken as their
representative symbols.
7.1.2 Sub-item symbol
A further division of the item, expressed with the first letter or abbreviation of the
corresponding English name adopted and marked at the lower right hand corner
of the item symbol.
8 Method Precision
The precision of coal analysis test method is expressed by repeatability limit and
reproducibility critical difference.
9 Test Record and Test Report
9.1 Test Record
The test record shall be filled according to the specified format, terms, symbols,
and legal measurement units and shall include the following contents at least.
Item name and record number for analysis test;
9.2 Test Report
The test report shall be filled according to the specified format, terms, symbols,
and legal measurement units and shall include the following contents at least.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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