Abstract
The possibility of a sodium fire as a consequence of an accident in fast nuclear reactors has prompted interest in studying the distribution of airborne sodium-oxide particles generated in such an event. Since these particles may incorporate fission products, knowledge of their ultimate distribution in time and space is needed to evaluate the extent of the associated hazard. The purpose of this paper is to present modifications of a previously reported general equation intended to describe the dynamic behavior of a heterogeneous population of aerosol particles. Solutions of the modified equation are compared with experimental results. In these experiments, liquid sodium at 1000°F is exposed to an environment containing 4% to21% of oxygen. Some fraction of the oxidized sodium is released as an aerosol in a laboratory test chamber. Measurements and computations are made of the airborne mass concentration, mass deposition rates on the floor and walls, and the particle size distribution, each as a function of time.
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