The unsteady, non-similar, chemically reactive, turbulent boundary layer equations are modified for gas plus dispersed solid particle mixtures, for gas phase turbulent combustion reactions and for heterogeneous gas-solid surface erosive reactions. The exterior (ballistic core) edge boundary conditions for the solutions are modified to include dispersed particle influences on core propellant combustion-generated turbulence levels, combustion reactants and products, and reaction-induced, non-isentropic mixture states. The wall surface (in this study it is always steel) is considered either bare or coated with a fixed particle coating which is conceptually non-reactive, insulative, and non-ablative. Two families of solutions are compared. These correspond to: (1) consideration of gas-borne, free-slip, almost spontaneously mobile (motile) solid particle additives which influence the turbulent heat transfer at the uncoated steel surface and, in contrast, (2) consideration of particle-free, gas phase turbulent heat transfer to the insulated surface coated by stationary particles. Significant differences in erosive heat transfer are found in comparing the two families of solutions over a substantial range of interior ballistic flow conditions. The most effective influences on reducing erosive heat transfer appear to favor mobile, gas-borne particle additives.

SYNROC is a titanate-based ceramic developed for immobilization of high-level nuclear reactor wastes in solid form. Fluid-bed SYNROC production permits slurry drying, calcining and redox to be carried out in a single unit. We present results of studies from two fluid beds; the Idaho Exxon internally-heated unit and the externally-heated unit constructed at Lawrence Livermore National laboratory. Bed operation over a range of temperature, feed rate, fluidizing rate and redox conditions indicate that high density, uniform particle-size SYNROC powders are produced which facilitate the densification step and give HUP parts with dense, well-developed phases and good leaching characteristics. 3 figures, 3 tables.

A radial inflow turbine (RIT) B rotor, including the impeller and shaft, was examined experimentally to determine vibratory characteristics. It was concluded that there are no specific speeds within the operating range with adequate resonance encroachment margins. It is recommended that performance tests be carried out with caution.

Large-scale plutonium recovery/processing facilities are currently operated at the US Department of Energy Hanford, Los Alamos National Laboratory, Rocky Flats, and Savannah River Sites. This paper presents an overview of plutonium process chemistry used at these sites, with particular emphasis on solution chemistry involved in recovery, purification, and waste treatment operations. By extrapolating from the present system of processes, this paper also attempts to chart the future direction of plutonium process development and operation. Areas where a better understanding of basic plutonium chemistry will contribute to development of improved processing are called out.

The detonation of the first atomic bomb heralded the beginning of a new age. Almost everyone agreed that the enormous energy released by the "atomic reaction" would create opportunities and problems far larger than man faced in previous history. However, few foresaw the explosion of knowledge that would also be part of this new age.

Activation energies were determined for decomposition of Fomblin HVAC 18/8 and Krytox 143AY oils (two perfluorinated polyethers) (respectively 60.6 kcal/mole and 55.6 kcal/mole) in the temperature range of 325/sup 0/ to 405/sup 0/C in a monel vessel. At any temperature in this range, Fomblin decomposes 30 +- 10 times faster than Krytox. The estimated decomposition in 10 years at 250/sup 0/C is 0.14% for Fomblin and 0.009% for Krytox. Effects of 304 ss and aluminum were determined. Although differences in the fluorine NMR spectrum of different batches of Krytox are observed, there are no significant changes detected between aged and unaged oils of the same batch. HF does not react with Krytox at 405/sup 0/C. Krytox can be chromatographed in spite of its high average molecular weight (3600 amu). GCMS showed that each smaller peak contained C/sub 2/F/sub 4/H-groups while the larger peaks contained only C/sub 2/F/sub 5/-groups. Hydrogen NMR on Krytox showed the C/sub 2/F/sub 4/H- to be CF/sub 3/CHF-groups. Chromatography of Fomblin gave a single broad envelope without resolved peaks.