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ASTM International - ASTM D7938-15

Standard Practice for Sampling of C-14 in Gaseous Effluents

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Organization: ASTM International
Publication Date: 15 December 2015
Status: active
Page Count: 6
ICS Code (Stationary source emissions): 13.040.40
significance And Use:

5.1 This practice was developed4 for the purpose of sampling gaseous effluent streams from a facility that releases 14C in either organic or inorganic forms.

5.1.1 For many years... View More

scope:

1.1 The intended use of this practice is for sampling of gasses containing 14C in inorganic, organic or particulate forms. This sampling practice captures the 14C in a media that can be submitted to a laboratory for analysis, typically by liquid scintillation counting (LSC)

1.2 This practice does not include the needed steps for the liberation of 14C from the media on which it was adsorbed or those for the preparation for LSC sample preparation in the laboratory prior to liquid scintillation analysis. This practice does not include the methodology used to analyze the prepared samples by LSC.

1.3 The overall 14C analytical detection capability is impacted by a number of factors including the volume sampled, the method used to desorb the 14C from the media, and the analytical method used the measure 14C from the media. This practice only directly addresses the volume of the gas stream from which any present 14C would be adsorbed.

1.4 The values stated in pCi units are to be regarded as standard given the reporting requirements of the U.S. NRC Regulatory Guide 1.21. The Bq values given in parenthesis are mathematical conversions to SI units that are provided for information only and are not considered standard. Other values stated in SI units are to be regarded as standard.

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.

Document History

ASTM D7938-15
December 15, 2015
Standard Practice for Sampling of C-14 in Gaseous Effluents
5.1 This practice was developed4 for the purpose of sampling gaseous effluent streams from a facility that releases 14C in either organic or inorganic forms. 5.1.1 For many years 14C was not...
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