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ASTM C 1703 : 2008 : R2013

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by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

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Superseded by

ASTM C 1703 : 2018

Language(s)

English

Published date

01-01-2013

€67.30
Excluding VAT

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Superseded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.

1.5The scope of this practice does not include provisions for preventing criticality incidents.

1.6This 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.

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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