STATISTICAL ESTIMATE FOR EVALUATION OF VITRIFIED RADIOACTIVE-WASTES

The evaluation of experimental results by methods of mathematical stat istics enabled us to derive a number of conclusions on the leachabilit y of vitrified radioactive wastes. Practical application of this a pro cedure requires that the ratio of Na and K concentrations in the solut ion should be independent of the leaching time. The actual value of th is ratio is influenced, above all, by the properties of the glass matr ix. These results confirm the assumption that the Na/K correlation fou nd could be extended for the determination of the Na/Cs-137 concentrat ion ratio. This finding was used for the application of a In-In correl ation, while evaluating the quality of vitrified radioactive wastes pr oducts.