Leachability of Radionuclides from Cement Solidified Waste Forms Produced at Operating Nuclear Power Plants.

摘要

Different sized samples of cement-solidified liquid wastes were collected from two nuclear power plants, a pressurized water reactor (PWR) and a boiling water reactor (BWR), to correlate radionuclide leaching from small and full sized waste forms. Diffusion-based model analysis of measured radionuclide leach data from small samples and full size samples indicated that leach data from small samples could be used to determine leachability indexes for full size waste form. The leachability indexes for cesium, strontium, and cobalt isotopes were determined for waste samples from both nuclear plants according to models used in ANS 16.1. The leachability indexes for the PWR samples were 6.4 for cesium, 7.1 for strontium, and 10.4 for cobalt. The leachability indexes for BWR samples were 6.5, 8.6, and 11.1 for cesium, strontium, and cobalt, respectively.