ASTM C1913-21

5.4.1?Fitness for purpose in verifying nuclear material declarations.

5.4.2?A safe, simple and fast procedure for the sample collector that minimizes sample handling and potential for cross-contamination.

5.4.3?Flexibility for use in a wide variety of facilities.

5.4.4?Robustness to adapt to minor changes in facility operating parameters.

5.4.5?Confidentiality for the operating facility from which the sample is collected.

5.4.6?Safety in sample handling and transport since the sample is a less hazardous, more stable form (specifically, UO₂F₂ is more stable and less volatile than UF₆ gas).

5.4.7?Ease of sample preparation in the laboratory with reduced processing hazards during recovery of the uranium content 5.5?Samples collected using this practice are suitable for determination of uranium isotopic composition, as described in 4.5, for safeguards applications. Care must be taken to ensure cleanliness of the sampling tap to be used for SUDA samples, as any UF_{1.1?This practice is applicable to sampling gaseous uranium hexafluoride (UF1.2?This practice is based on the SUDA method developed at Pacific Northwest National Laboratory 1.3?The UF1.4?This practice can be used to collect samples for safeguards measurements. Safeguards samples collected with this practice have been shown to provide suitable isotopic measurements (1).}

1.5?This practice has not been demonstrated for suitability for compliance with Specifications C787 and C996. Practices C1052 or C1703 can be used to collect samples for compliance with these specifications.

1.6?The scope of this practice does not include provisions for preventing criticality.

1.7?UnitsThe values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.

1.8?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.

1.9?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.