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Significance and Use
6.1 It is intended that this practice be used to provide a sample representative of the coal from which it is collected. Because of the variability of coal and the wide variety of mechanical sampling equipment available, caution should be used in all stages of the sample collection process, the design of sampling system specifications, the equipment procurement and the acceptance testing of installed equipment.
6.2 After removal from the sampling system and further preparation (Practice ), the sample may be analyzed for a number of different parameters. These parameters may define the lot's value, its ability to meet specifications, its environmental impact, as well as other properties.
1.1 This practice is divided into four parts: A, B, C, and D. These four parts represent the previous standards , , , and . These four standards are the four that govern the mechanical sampling of coal and have been combined into one document for the ease of reference of the users of these standards.
1.2 The scope of Part A can be found in Section .
1.3 The scope of Part B can be found in Section .
1.4 The scope of Part C can be found in Section .
1.5 The scope of Part D can be found in Section .
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Sections , , , , and .
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D121 Terminology of Coal and Coke
D2013/D2013M Practice for Preparing Coal Samples for Analysis
D2234/D2234M Practice for Collection of a Gross Sample of Coal
D3302 Test Method for Total Moisture in Coal
D4621 Guide for Quality Management in an Organization That Samples or Tests Coal and Coke
D4702 Practice for Quality Management of Mechanical Coal Sampling Systems
D4749 Test Method for Performing the Sieve Analysis of Coal and Designating Coal Size
D4916 Practice for Mechanical Auger Sampling
D6518 Practice for Bias Testing a Mechanical Coal Sampling System
D7256/D7256M Practice for Mechanical Collection and Within-System Preparation of a Gross Sample of Coal from Moving Streams
E105 Practice for Probability Sampling of Materials
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 73.040 (Coals); 75.160.10 (Solid fuels)
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ASTM D7430-18a, Standard Practice for Mechanical Sampling of Coal, ASTM International, West Conshohocken, PA, 2018, www.astm.orgBack to Top