BS ISO 13909-2:2016
$167.15
Hard coal and coke. Mechanical sampling – Coal. Sampling from moving streams
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 42 |
This part of ISO 13909 specifies procedures and requirements for the design and establishment of mechanical samplers for the sampling of coal from moving streams and describes the methods of sampling used.
It does not cover mechanical sampling from stationary lots which is dealt with in ISO 13909‑3 [1] .
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 7 | Foreword |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions 4 Establishing a sampling scheme 4.1 General |
| 10 | 4.2 Design of the sampling scheme 4.2.1 Material to be sampled 4.2.2 Division of lots 4.2.3 Basis of sampling 4.2.4 Precision of sampling |
| 11 | 4.2.5 Bias of sampling 4.3 Precision of results 4.3.1 Precision and total variance |
| 12 | 4.3.2 Primary increment variance 4.3.3 Preparation and testing variance 4.3.4 Number of sub-lots and number of increments per sub-lot |
| 15 | 4.4 Minimum mass of sample |
| 17 | 4.5 Mass of primary increment 4.6 Size analysis |
| 18 | 5 Methods of sampling 5.1 General |
| 19 | 5.2 Time-basis sampling 5.2.1 Method of taking primary increments 5.2.2 Sampling interval 5.2.3 Mass of increment 5.3 Mass-basis sampling 5.3.1 Method of taking primary increments |
| 20 | 5.3.2 Sampling interval 5.3.3 Mass of increment 5.4 Stratified random sampling 5.4.1 General |
| 21 | 5.4.2 Time-basis stratified random sampling 5.4.3 Mass-basis stratified random sampling 5.5 Reference sampling 6 Design of mechanical samplers 6.1 Safety 6.2 Information 6.3 Basic requirements |
| 22 | 6.4 Location of sampling equipment 6.5 Provision for checking precision 6.6 Provision for testing for bias 6.7 General requirements for designing mechanical samplers 6.8 Design of falling-stream-type samplers 6.8.1 General |
| 23 | 6.8.2 Cutter velocity |
| 25 | 6.9 Cross-belt-type primary samplers 6.9.1 Operation |
| 28 | 6.9.2 Design of cross-belt samplers |
| 29 | 6.10 Maintenance and checking of sampling equipment |
| 30 | 7 Handling and storage of samples |
| 31 | 8 Sample preparation 9 Bias 9.1 Minimization of bias |
| 32 | 9.2 Checking for precision and bias 10 Verification |
| 33 | Annex A (normative) Evaluation of sampling equipment for mass-basis sampling |
| 38 | Bibliography |
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BS ISO 13909-2:2016 – TC:2020 Edition
Tracked Changes. Hard coal and coke. Mechanical sampling – Coal. Sampling from moving streams Published…
