Table of Contents

Abstract

Specifies procedures for the determination of the desorbed gas content of coal and carbonaceous material by directly measuring the volume of gas, using the water displacement method, from material obtained by coring or collection of lump samples.

Scope

This Standard covers the following two direct methods, which vary only in the time allowed for the gas to desorb from the intact sample prior to final crushing:
(a) The slow desorption method.
(b) The fast desorption method.
The Standard is confined to the direct method using lump or core samples.
Desorption limitations to the method are specified in Appendix A.
This Standard does not include the gas content determination using cuttings from drilling and interpretation of the results do not fall within the scope of this document.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	MN-001
Supersedes	DR AS 3980:2016 AS 3980-1999 (R2013)