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ASTM D4702-03

Historical Revision

Standard Guide for Inspecting Crosscut, Sweep-Arm, and Auger Mechanical Coal-Sampling Systems for Conformance with Current ASTM Standards

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1.1 This guide is applicable to cross-belt, falling stream, and auger sampling systems.

1.2 Spacing of increments pertains to the kind of interval between increments. Intervals can be defined in quantitative terms, such as units of time or mass, or in terms of position over the lot.

1.2.1 Spacing of Increments for Cross-Belt and Falling Stream Samplers—Cross-belt and falling stream type mechanical sampling systems take increments based on time, either at fixed time intervals or at random times during a fixed time strata. Some crosscut samplers can take increments based on equal mass of coal sampled as determined by scales. The sections of this guide that pertain to cross-belt and falling stream samplers describe procedures for only time-based sampling systems. This time-based inspection guideline will satisfy most criteria for mass-based or combination mass-based and time-based sampling systems. If there are items that are not covered, the inspector should refer to the manufacturer's literature.

1.2.2 Spacing of Increments for Auger Sampling—The spacing of increments collected by auger sampling systems is defined in terms of position over the lot.

1.3 It is essential that the inspector have the documentation listed in Section 2 of this guide when conducting an inspection.

1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.5 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 and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement, see Section 5.


SDO ASTM: ASTM International
Document Number D4702
Publication Date Oct. 1, 2003
Language en - English
Page Count 6
Revision Level 03
Supercedes
Committee D05.23
Publish Date Document Id Type View
May 1, 2007 D4702-07 Revision
April 1, 2006 D4702-06 Revision
Nov. 1, 2004 D4702-04 Revision
Dec. 1, 2003 D4702-03A Revision
Oct. 1, 2003 D4702-03 Revision
Jan. 1, 1991 D4702-97 Revision
June 10, 2003 D4702-97R03 Reaffirmation