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AS ISO 18283:2024
$242.18
Coal and coke – Manual sampling
AS ISO 21503:2024 identically adopts ISO 21503:2022, which gives guidance on programme management
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Establishing a sampling scheme
4.1 General
4.1.1 Sampling
4.1.2 Sampling scheme
4.1.3 Parameters
4.1.4 Sampling methods
4.2 Design of the sampling scheme
4.2.1 General
4.2.2 Coal or coke to be sampled and considerations for sampling
4.2.3 Division of lots
4.2.4 Precision of results
4.2.5 Bias of results
4.2.6 Requirements for test samples
4.3 Precision of sampling
4.3.1 General
4.3.2 Precision and total variance
4.3.3 Primary increment variance
4.3.4 Sub-lot variance
4.3.5 Preparation and testing variance
4.3.6 Number of sub-lots and number of increments per sub-lot
4.3.6.1 General
4.3.6.2 Number of increments
4.3.6.3 Mass of increments
4.3.7 Minimum mass of samples for general analysis and determination of total moisture content
4.4 Checking the overall precision for the lot by calculation and selection of sampling scheme
4.5 Determination of acquired precision by replicate sampling
4.5.1 General
4.5.2 Method and calculation
4.5.3 Precision obtained using normal sampling scheme
4.6 Size analysis
5 Methods of sampling
5.1 General
5.2 Sampling by time interval (time-basis sampling)
5.3 Sampling by mass interval (mass-basis sampling)
5.4 Stratified random sampling
5.4.1 General
5.4.2 Stratified random sampling by time interval
5.4.3 Stratified random sampling by mass interval
5.5 Extracting the increment
5.6 Coal or coke in motion
5.6.1 General
5.6.2 Stopped belt
5.6.3 Falling stream
5.6.4 Moving belt
5.6.5 Stockpiles (building/reclaiming)
5.6.6 Grabs/front-end loaders
5.6.7 Barges/trucks/railcars/wagons (loading/unloading)
5.7 Moisture/common sample
5.8 Different coals or cokes
5.9 Random selection of increments
6 Sampling equipment
6.1 General
6.2 Examples
6.2.1 Ladles
6.2.2 Shovels
6.2.3 Scoops
6.2.4 Probes
6.2.5 Manual cutter
6.2.6 Stopped-belt sampling frame
7 Handling and storage of samples
7.1 Sample size
7.2 Time
7.3 Divided sample
7.4 Containers
7.5 Moisture loss/breakage or degradation
7.6 Identification/labelling
8 Sample preparation
8.1 General
8.2 Constitution of a sample
8.3 Division
8.3.1 General
8.3.2 Mechanical methods
8.3.2.1 General
8.3.2.2 Rotary dividers
8.3.2.3 Division of samples
8.3.3 Manual methods
8.3.3.1 Riffle method
8.3.3.2 Flattened-heap method
8.3.3.3 Strip-mixing and splitting method
8.4 Reduction
8.4.1 General
8.4.2 Reduction mills
8.5 Mixing
8.6 Air-drying of coal
8.7 Coal — Preparation of test samples
8.7.1 Types of test samples
8.7.2 Preparation of samples for determination of total moisture content
8.7.3 Preparation of samples for general analysis
8.7.4 Common samples
8.7.5 Preparation of size-analysis sample
8.7.6 Preparation of samples for other tests
8.7.7 Reserve sample
8.8 Coke — Preparation of test samples
8.8.1 Types of test samples
8.8.2 Preparation of coke samples for determination of total moisture content
8.8.2.1 General
8.8.2.2 Procedure
8.8.2.3 Wet samples
8.8.2.4 Reduction of total moisture test sample
8.8.2.5 Division
8.8.2.6 Determination of total moisture content
8.8.2.7 Reserve sample
8.8.3 Preparation of samples for general analysis
8.8.3.1 General
8.8.3.2 Preparation errors
8.8.3.3 Reduction
8.8.3.4 Division
8.8.4 Storage
8.8.5 Physical test sample
8.8.6 Samples for special properties
8.8.7 Reserve sample
9 Packing and marking of samples
10 Sampling report
Annex A
A.1 Introduction
A.2 Example
A.3 Interpretation
Annex B
B.1 General
B.2 Sampling from stationary lots
B.2.1 General
B.2.2 Extracting the increment
B.2.3 Sample storage
Bibliography
Cited references in this standard
Please select a variation to view its description.
| Published | 01/03/2024 |
|---|---|
| Pages | 60 |
Please select a variation to view its pdf.
