QUARTERLY PROGRESS REPORT Research and development activities: fixation of radioactive residues. July-September 1965
Description: The calcined-waste containers produced during the Hot Cell Pilot Plant experiments in 1962 and 1963 have generated a maximum pressure of 3 psig. Design verification tests with the prototype spray calciner showed satisfactory performance when producing high melting point powders. Later tests on other feeds showed poor atomization and cake buildup in the calciner. Design of the prototype equipment is complete. Procurement and fabrication of prototype equipment is done except for a few cleanup items and final field-fitting of jumpers. Design verification tests on the pot storage station indicated satisfactory calorimeter performance. A GE-412 computer was successfully used in design verification tests for data collection, calculation, and correlations. Studies continued on fixation of sulfates from acid condensates generated in a glass-making process. Lead sulfate-borax melts produced by a continuous feed melter at 900/sup 0/C appear to be quite fluid, but exhibited a high (22%) evolution of sulfate. Studies were initiated on incorporation of the neutralized condensate into asphalt. Release rates of up to 2%/hr for /sup 137/Cs from a simulated phosphate ceramic waste material were observed from exposures to temperatures up to 1200/sup 0/C. Release rates of other isotopes which appear to be a thousand-fold lower than for cesium established volatilization as the predominant mode of cesium release. A technique for varying the phosphate content of the simulated ceramic wastes was developed.
Date: October 1, 1965
Creator: Platt, A.M. (ed.)
Partner: UNT Libraries Government Documents Department