ORNL TRU waste assay system

ORNL has been selected as the demonstration site for a new transuranic neutron assay system developed at the Los Alamos National Laboratory. The major objectives of the cooperative interlaboratory program are to field test, calibrate, and evaluate the neutron interrogation system, to provide a demonstration and training facility for personnel from other DOE sites and contractors, to reduce the volume of TRU waste stored at ORNL, and to provide positive identification of the radionuclide content of the ORNL TRU waste. In order to meet these objectives, a two-tier assay system utilizing the LANL neutron interrogation assay system and an upgraded gamma-ray drum scanner has been employed. This paper describes each assay technique and the results obtained from the examination of authentic ORNL TRU waste