UF/sub 6/ sample bottle assay meter

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5193448

Ricci, E

A UF/sub 6/ Sample Bottle Assay Meter has been developed by UCC-ND which can determine the /sup 235/U concentration in UF/sub 6/ feed and product, contained in Model 1S and 2S sample cylinders, with accuracy and precision better than 1 percent. For UF/sub 6/ tails the accuracy and precision are better than 2 percent. The assay meter is based on the measurement of the 186-keV gamma rays of /sup 235/U, and consists essentially of a fixed-geometry system, a portable HP Ge detector of high relative efficiency, and portable electronics. The fixed-geometry system is a combination of shield/collimator for the detector and holders for the Model 1S and 2S cylinders. The assay meter was designed for the IAEA to perform attribute accountability verification measurements at enrichment plants. Use of the assay meter by the IAEA would be advantageous for the IAEA, since it would reduce the number of mass spectrometry (variables) determinations needed, and it would enable the IAEA inspector to obtain good precision results immediately at the enrichment facility during the inspection visit.

• Research Organization: Oak Ridge Gaseous Diffusion Plant, TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5193448
• Report Number(s): K/OA-5615; ON: DE84007589
• Country of Publication: United States
• Language: English

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