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Significance and Use
5.1 Uranium hexafluoride is a basic material used to prepare nuclear reactor fuel. To be suitable for this purpose, the material must meet the criteria for technetium composition. This test method is designed to determine whether the material meets the requirements described in Specifications C787 and C996.
5.2 Using the specified instrumentation and parameters, this method has a lower detection limit of 0.0004 μgTc/gU.
1.1 This test method is a quantitative method used to determine technetium-99 (99Tc) in uranium hexafluoride (UF6) by liquid scintillation counting.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C787 Specification for Uranium Hexafluoride for Enrichment
C996 Specification for Uranium Hexafluoride Enriched to Less Than 5 % 235U
C1215 Guide for Preparing and Interpreting Precision and Bias Statements in Test Method Standards Used in the Nuclear Industry
Other DocumentUSEC-651 Uranium Hexafluoride: A Manual of Good Handling Practices Available from U.S. Enrichment Corporation, 6903 Rockledge Drive, Bethesda, MD 20817.
ICS Number Code 71.040.01 (Analytical chemistry in general)
UNSPSC Code 15131500(Nuclear fuel)
ASTM C1539-08(2014), Standard Test Method for Determination of Technetium-99 in Uranium Hexafluoride by Liquid Scintillation Counting, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top