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1.1 This practice provides a description of the different ways to clean uranium hexafluoride (UF₆) bottles.

1.2 This practice describes two kinds of sample bottles: 1S and 2S bottles.

1.3 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.

1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.

4.1 The uranium hexfluoride (UF₆), as described in Specifications C787 and C996, has to meet different requirements: one set of requirements being safety, health physics, and criticality and the other set being chemical, physical, and isotopic. To ensure the UF₆ is in compliance with all requirements, sampling and analysis shall be performed. Therefore, packaging may have a significant impact on the quality of UF₆.

4.2 After sampling, the bottle will contain residues. There is contamination because of the equipment, other contamination caused by nonvolatile elements, and isotopic contamination as a result of UF₆ hydrolysis.

4.3 Cleaning shall be efficient. Special emphasis should be given to decontaminate the bottles without leaving any trace of cleaning products, make the bottles inert in UF₆ medium (passivation bottle), and minimize waste. The cleaning process should be easy, safe, and environmentally friendly.

4.4 This practice describes different protocols for cleaning bottles by gas and liquid.