This standard defines the terms and definitions in manual sampling of commercial coal and describes the general principles of sampling. It specifies sampling precision, establishment of sampling scheme, sampling methods, manual sampling equipment, package and marking of coal sample and a sampling report.
This standard is applicable to lignite, soft coal and hard coal.
Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 General Principles of Sampling and Sampling Precision 4.1 General Principles of Sampling 4.2 Sampling Precision 5 Sampling Scheme 5.1 Selection of Sampling Scheme 5.2 Basic Sampling Scheme 5.3 Design of Special Sampling Scheme 6 Sampling Method-Sampling Method for Primary Increment 6.1 Sampling of Coal Stream in Motion 6.2 Sampling of Stationary Coal 7 Intermittent Sampling 8 Taking of Various Coal Samples 9 Manual Sampling Equipment 9.1 Basic Requirements for Manual Sampling Equipment 9.2 Examples 10 Package and Marking of Coal Sample 11 Sampling Report Annex A (Informative) Comparison of Chapter and Article Numbers between this Standard and ISO 18283:2006(E) Annex B (Informative) Technical Differences between This Standard and ISO 18283:2006(E) and their Reasons Annex C (Normative) Sampling Precision Verification and Bias Test Annex D (Informative) Example of Calculation of Mass of Increment, Number of Sampling Units and Number of Increments per Sampling Unit Annex E (Informative) Treatment Method for Lump Materials with a Size Exceeding 150mm or Other Sizes
This standard defines the terms and definitions in manual sampling of commercial coal and describes the general principles of sampling. It specifies sampling precision, establishment of sampling scheme, sampling methods, manual sampling equipment, package and marking of coal sample and a sampling report.
This standard is applicable to lignite, soft coal and hard coal.
Contents of GB 475-2008
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 General Principles of Sampling and Sampling Precision
4.1 General Principles of Sampling
4.2 Sampling Precision
5 Sampling Scheme
5.1 Selection of Sampling Scheme
5.2 Basic Sampling Scheme
5.3 Design of Special Sampling Scheme
6 Sampling Method-Sampling Method for Primary Increment
6.1 Sampling of Coal Stream in Motion
6.2 Sampling of Stationary Coal
7 Intermittent Sampling
8 Taking of Various Coal Samples
9 Manual Sampling Equipment
9.1 Basic Requirements for Manual Sampling Equipment
9.2 Examples
10 Package and Marking of Coal Sample
11 Sampling Report
Annex A (Informative) Comparison of Chapter and Article Numbers between this Standard and ISO 18283:2006(E)
Annex B (Informative) Technical Differences between This Standard and ISO 18283:2006(E) and their Reasons
Annex C (Normative) Sampling Precision Verification and Bias Test
Annex D (Informative) Example of Calculation of Mass of Increment, Number of Sampling Units and Number of Increments per Sampling Unit
Annex E (Informative) Treatment Method for Lump Materials with a Size Exceeding 150mm or Other Sizes
