ASTM C 1703 : 2008 : R2013
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Practice for Sampling of Gaseous Uranium Hexafluoride
Hardcopy , PDF
11-11-2014
English
01-01-2013
Committee |
C 26
|
DocumentType |
Standard Practice
|
Pages |
5
|
ProductNote |
Reconfirmed 2013
|
PublisherName |
American Society for Testing and Materials
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
1.1This practice covers methods for withdrawing representative sample(s) of uranium hexafluoride (UF6) during a transfer occurring in the gas phase. Such transfer in the gas phase can take place from a mother cylinder, for example in an autoclave to a receiving cylinder. It can also occur during the filling in the gas phase of a cylinder during a continuous production process, for example centrifuge enrichment facility or the distillation column in a conversion facility. Such sample(s) may be used for determining compliance with the applicable commercial specification, for example Specification C996 or Specification C787.
1.2Since UF6 sampling is taken during the filling process, this practice does not address any special additional arrangements that may be agreed upon between the buyer and the seller when the sampled bulk material is being added to residues already present in a container (“heels recycle”). Such arrangements will be based on QA procedures such as traceability of cylinder origin (to prevent for example contamination with irradiated material).
1.3If the receiving cylinder is purged after filling and sampling, special verifications must be performed by the user to verify the representativity of the sample(s). It is then expected that the results found on volatile impurities with gas phase sampling may be conservative.
1.4This practice is only applicable when the transfer occurs in the gas phase. When the transfer is performed in the liquid phase, Practice C1052 should apply. This practice does not apply to gas sampling after the cylinder has been filled since the sample taken will not be representative of the cylinder.
ASTM C 996 : 2015 | Standard Specification for Uranium Hexafluoride Enriched to Less Than 5 % <sup> 235</sup>U |
ASTM C 1842 : 2016 | Standard Test Method for The Analysis of Boron and Silicon in Uranium Hexfluoride via Fourier-Transform Infrared (FTIR) Spectroscopy |
ASTM C 1880 : 2019 | Standard Practice for Sampling Gaseous Uranium Hexafluoride using Alumina Pellets |
ASTM C 787 : 2015 | Standard Specification for Uranium Hexafluoride for Enrichment |
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