Standard Practice for Subsampling of Uranium Hexafluoride

Importancia y uso:

5.1 Uranium hexafluoride is normally produced and handled in large (typically 1- to 14-ton) quantities and must, therefore be characterized by reference to representative samples. The samples are used to determine compliance with the applicable commercial Specifications C996 and C787 by means of the appropriate test method (for example, Test Method C761 and references therein). The quantities involved, physical properties, chemical reactivity, and hazardous nature of UF₆ are such that for representative sampling, specially designated equipment must be used and operated in accordance with the most carefully controlled and stringent procedures. This practice indicates appropriate principles, equipment and procedures currently in use for subsampling of liquid UF₆. It is used by UF₆ converters, enrichers and fuel fabricators to review the effectiveness of existing procedures or to design equipment and procedures for future use. Other subsampling procedures such as UF₆ vapor sampling are not directly representative of the chemical quality of liquid UF₆.

5.2 It is emphasized that this test guide is not meant to address conventional or nuclear criticality safety issues, nor does it address the conditioning of subsample tubes to make them suitable for transport.

Subcomité:

C26.05

Referida por:

C1845-16, C1771-19, C1052-20, C0761-18, C1128-23

Volúmen:

12.01

Número ICS:

27.120.30 (Fissile materials and nuclear fuel technology)

Palabras clave:

nuclear laboratory; subsampling equipment; subsampling processes; uranium hexafluoride;