This part of ISO 13909<\/span> <\/span> 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.<\/p>\n
It does not cover mechanical sampling from stationary lots which is dealt with in ISO 13909\u20113<\/span> <\/span> [1]<\/sup> <\/span>.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
---|---|---|---|---|---|---|---|
7<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 Establishing a sampling scheme 4.1 General <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 4.2.5 Bias of sampling 4.3 Precision of results 4.3.1 Precision and total variance <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | 4.4 Minimum mass of sample <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | 4.5 Mass of primary increment 4.6 Size analysis <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | 5 Methods of sampling 5.1 General <\/td>\n<\/tr>\n | ||||||
19<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
20<\/td>\n | 5.3.2 Sampling interval 5.3.3 Mass of increment 5.4 Stratified random sampling 5.4.1 General <\/td>\n<\/tr>\n | ||||||
21<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
22<\/td>\n | 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 <\/td>\n<\/tr>\n | ||||||
23<\/td>\n | 6.8.2 Cutter velocity <\/td>\n<\/tr>\n | ||||||
25<\/td>\n | 6.9 Cross-belt-type primary samplers 6.9.1 Operation <\/td>\n<\/tr>\n | ||||||
28<\/td>\n | 6.9.2 Design of cross-belt samplers <\/td>\n<\/tr>\n | ||||||
29<\/td>\n | 6.10 Maintenance and checking of sampling equipment <\/td>\n<\/tr>\n | ||||||
30<\/td>\n | 7 Handling and storage of samples <\/td>\n<\/tr>\n | ||||||
31<\/td>\n | 8 Sample preparation 9 Bias 9.1 Minimization of bias <\/td>\n<\/tr>\n | ||||||
32<\/td>\n | 9.2 Checking for precision and bias 10 Verification <\/td>\n<\/tr>\n | ||||||
33<\/td>\n | Annex\u00a0A (normative) Evaluation of sampling equipment for mass-basis sampling <\/td>\n<\/tr>\n | ||||||
38<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Hard coal and coke. Mechanical sampling – Coal. Sampling from moving streams<\/b><\/p>\n\n\n\n\n |