TEST OF CALORIMETRY FOR HIGH BURN-UP PLUTONIUM
Calorimetric measurements have been performed on a set of high burn-up (25000 MWd/t) Pu samples, ranging in mass between 60 g and 2.5 kg Pu, distributed as PuO-2 powder embedded in stainless steel containers. The powers produced by these containers ranged between 0.8 W and 36 W. The calorimeter used was the Mound not equal 150 type, and the isotopics and the Am content have been determined earlier by mass spectroscopy, completed with alpha and gamma counting, and were later verified by the same methods. Watts/gram measurements were made on twelve 60 g samples of the same plutonium lot to demonstrate the Pu elemental and isotopic homogeneity, and hence, its suitability for subsequent NDA experiments. These samples were also measured in a stacked way to fill up the mass and wattage gaps between 60 g (0.8 W) and 1 kg (14 W). Calorimetric assay values, obtained with both isotopic measurements, are discussed.
Bibliographic Reference: EUR 9181 EN (1984) MF, 40 P., BFR 120, BLOW-UP COPY BFR 200, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989123003200 / Last updated on: 1987-01-01
Available languages: en