&^ b DISTRIBUTIGk' OF THIS C.jCli.'vlE.'iT in V>'5*V^*^ RFP-3876 ii ACKNOWLEDGMENTS This report is the culmination of the efforts of many people over several years. Particularly noteworthy contributions from Rocky Flats personnel include H. A. Egger of the Chemistry Standards Laboratory, M. B. Bergeron of the Analytical Laboratory, and J. J. Giacomini of Statistical Applications. Mound contributions were provided by J. G. Fleissner. ABSTRACT To study problems associated with nondestructive

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... (NDA) measurements of molten salt residues, a joint study was conducted by the Rocky Flats Plant, Golden, CO and Mound Laboratories, Miamisburg, OH. Extensive NDA measurements were made on nine containers of molten salt residues by both Rocky Flats and Mound followed by dissolution and solution quantification at Rocky Flats. Results of this study verify that plutonium and americium can be measured in such salt residues by a new gammaray spectral analysis technique coupled with calorimetry. Biases with respect to the segmented gamma-scan technique were noted.