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GB/T 483-2007 English PDF (GBT483-2007)

GB/T 483-2007 English PDF (GBT483-2007)

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GB/T 483-2007: General rules for analytical and testing methods of coal

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.
GB/T 483-2007
GB
ICS 73.0404
D 21
NATIONAL STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
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.
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)
GB/T 19494.2 Mechanical Sampling of Coal - Part 2. Method for Sample
Preparation (GB/T 19494.2-2004, ISO 13909-4.2001, 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.
3.1.3 Stratified seam-sample of coal
Coal sample respectively taken from any natural layer of coal and dirt band as required.
3.1.4 Workable seam-sample of coal
All samples (including coal delamination and dirt band) to be taken according to the specified coal mining thickness
3.1.5 Coal sample for production
Coal sample representing the physical, chemical and technological
characteristics of coal for production, extracted in the coal mining process of a whole shift under the regular production conditions.
3.1.6 Sample of commercial coal
Coal sample representing the average properties of commercial coal.
3.1.7 Float sample of coal
Coal sample floating in the upper part through the heavy-liquid (in certain density) concentration.
3.1.8 Sink sample of coal
Coal sample sinking in the lower part through the heavy-liquid (in certain density) concentration.
3.1.9 Test sample of coal
Coal sample prepared to meet requirements of some special test.
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.
3.1.14 Size analysis sample of coal
Coal sample taken specifically for size analysis.
3.1.15 Laboratory sample of coal
Coal sample reduced from the gross sample or sub-sample and delivered to the laboratory for further preparation.
3.1.16 Certified reference-material of coal
Reference-materials of coal accompanied with certificates, of which one or more characteristic values are determined by the procedures with traceability established and may be traced to the accurate and reproductive measurement units capable of expressing the characteristic values, and each standard value is accompanied with the uncertainty of the given confidence level.
3.1.17 Sampling
A process of taking a representative portion from a great deal of coal. 3.1.18 Increment
A portion of sample taken ...

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