SCDAP/RELAP5 code extensions for modeling vapor source rates in Savannah River Site reactors.

摘要

The design of a model intended to describe the release of fission products and structural materials that may form aerosols from UAl(sub x) fuels is discussed. The model considers the release of noble gases, cesium and iodine from UAl(sub 3) or UAl(sub 4) grains within a solid aluminum fuel matrix by diffusion and blistering of the surface, release of zinc from a solid aluminum matrix by diffusion, evaporation of cadmium, and the release of xenon, krypton, iodine, cesium, zinc, and zinc iodide from liquid phases. The design is based on limited data that are surveyed. Also, the model is applied to a test case to demonstrate its abilities and limitations. 23 refs., 8 figs., 9 tabs.