Nondestructive Assay Technology Assessment for Large Volume Box Type Containers

An assessment of current nondestructive assay (NDA) technologies with respect to the capability to accommodate low-level and transuranic (TRU) type waste packaged in large volume containers, i.e., box, has been performed. The assessment considered various NDA data acquisition, data reduction and calibration techniques in conjunction with low-level and TRU waste inventory attributes. Several waste attribute dependent technology deficiencies were noted. These deficiencies are related to heterogeneous matrix distributions, within the box container, i.e., matrix elemental composition and density distribution. Additionally, measurement system response perturbations due to non-uniform radionuclidic/isotopic composition and radioactive material mass spatial distribution result in unaccounted for bias in many circumstances. The technology assessment findings and conclusions are presented.