ASTM-D4702 2004

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D4702-04 Standard Guide for Quality Management of Mechanical Coal Sampling Systems

Published By	Publication Date	Number of Pages
ASTM	2004	6

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Categories: 75.160.10 - Solid fuels, ASTM

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Description

ASTM D4702-04

Historical Standard: Standard Guide for Quality Management of Mechanical Coal Sampling Systems

ASTM D4702

Scope

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 SamplersCross-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 falling stream 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 SamplingThe 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 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.

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 .

Keywords

coal sampling; inspection; mechanical sampling; sampling systems

ICS Code

ICS Number Code 75.160.10 (Solid fuels)

DOI: 10.1520/D4702-04

PDF Catalog

PDF Pages	PDF Title
1	Scope Terminology Significance and Use
2	Assessing the Organization and Planning of Sampling Operations General Observations of Coal Stream Variability as Related to Primary Increment Collection by Falling Stream and Cross-Belt Samplers General Observations of Auger Placement Inspection of the Primary Sampler in Time-Based Cross-Belt or Falling Stream Sampling Systems
3	Inspection of Augers Criteria for Secondary Sampler Operation Criteria for Tertiary or Final Sampler Operation
4	Cautions for Collecting Final Sample General Considerations to be Observed by the Inspector Keywords X1. TYPICAL MECHANICAL COAL SAMPLER CHECKLIST

Additional information

Standard Title	D4702-04 Standard Guide for Quality Management of Mechanical Coal Sampling Systems
Published Code	ASTM
Publication Date	2004
Pages Count	6
ICS Codes	75.160.10 - Solid fuels