Year
1994
Abstract
The 1989 International Atomic Energy Agency Consultants Meetings on the Development of Technical Criteria for Termination of Safeguards for Material Categorized as Measured Discards did not produce a consensus of opinion on several significant issues. Since that time, technical assessments have been performed to resolve the issues. This paper will address the issue of inert dilution of practically recoverable waste to permit termination of safeguards. Potential termination criteria based on ratios of fission products to nuclear material content are identified that could be used to resolve the inert dilution concerns associated with high-activity liquid waste. Fission product isotopes and elements, many from the lanthanide series, were identified that could be effectively used in ratios. Use of 137Cs to ratio against plutonium appears especially favorable because of the measurability of the isotope and its consistency of production with respect to the total quantity of fission products.