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BS> Hydrogen pickup by U was studied in different salt mixtures at 1350 deg F under dry and wet atmospheres. Of the salts investigdted, 50 wt.% KCl-50 wt.% NaCl and 50 wt.% KCl-50 wt.% Na/sub 2/CO/sub 3/ gave the best results for low H pickup, corrosion of U, and salt stability at 1350 deg F. These salt mixtures resulted in H pickup of less than 3 ppm under dry atmospheres and less than 5 ppm under wet atmospheres. By comparison, the two salt mixtures, 44 wt.% Li/sub 2/CO/sub 3/-56 wt.% K/sub 2/CO/sub 3/ and 25 wt.% Li/sub 2/CO/sub 3/--75 wt.% K/sub 2/CO/sub 3/, resulted in H pickup greater than 5 ppm under dry atmospheres and as high as 13 ppm under wet atmospheres. Pilot-plantscale studies showed that the average final H content of the U specimens treated in the 50 wt.% KCl-50 wt.% NaCl baths was 0.47 ppm. The corresponding average for the 50 wt.% KCl-50 wt.% Na/sub 2/CO/sub 3/ baths was 0.77 ppm. Preliminary studies of corrosion of materials of construction in the pilot-plant-scale baths indicated that Type 330 stainless steel was more resistant to attack than mild steel and Types 304, 416, and 446 stainless steels. (auth

NEW BETA HEAT-TREATING SALT BATHS FOR REDUCING HYDROGEN PICKUP BY URANIUM RODS