ASTM C1703-18(2023)
Standard Practice for Sampling of Gaseous Uranium Hexafluoride for Enrichment

Standard No.

ASTM C1703-18(2023)

Release Date

2023

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM C1703-18(2023)

Scope

1.1 This 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 during the filling of a cylinder during a continuous production process, for example the distillation column in a conversion facility. Such sample(s) may be used for determining compliance with the applicable commercial specification, for example Specification C787. 1.2 Since 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). 1.3 If 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. 1.4 This 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. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM C1703-18(2023) Referenced Document

• ASTM C1052 Standard Practice for Bulk Sampling of Liquid Uranium Hexafluoride
• ASTM C1838 Standard Practice for Cleaning for 1S and 2S Bottles
• ASTM C761 Standard Test Methods for Chemical, Mass Spectrometric, Spectrochemical, Nuclear, and Radiochemical Analysis of Uranium Hexafluoride
• ASTM C787 Standard Specification for Uranium Hexafluoride for Enrichment
• ASTM C859 Standard Terminology Relating to Nuclear Materials
• ISO 7195 Nuclear energy — Packagings for the transport of uranium hexafluoride (UF6) — Amendment 1*， 2023-08-01 Update

ASTM C1703-18(2023) history

• 2023 ASTM C1703-18(2023) Standard Practice for Sampling of Gaseous Uranium Hexafluoride for Enrichment
• 2018 ASTM C1703-18 Standard Practice for Sampling of Gaseous Uranium Hexafluoride for Enrichment
• 2008 ASTM C1703-08(2013) Standard Practice for Sampling of Gaseous Uranium Hexafluoride
• 2008 ASTM C1703-08 Standard Practice for Sampling of Gaseous Uranium Hexafluoride