Nondestructive Assay Holdup Measurements with the Ortec Detective

Year
2009
Author(s)
Tracy R. Wenz - Los Alamos National Laboratory
Jose Valdez - Los Alamos National Laboratory
M. Dempsey - Los Alamos National Laboratory
David S. Bracken - Los Alamos National Laboratory
W. Geist - Los Alamos National Laboratory
Manuel A. Gonzales - Los Alamos National Laboratory
Duc T. Vo - Los Alamos National Laboratory
Abstract
Wing 4 of the Chemistry and Metallurgy Research facility at Los Alamos National Laboratory is to be downgraded from a Hazard Category 2 Nuclear Facility to a Hazard Category 3 Radiological Facility. Survey and holdup measurements were used to ensure that the total contamination levels present in the facility do not contribute enough activity to be above the Hazard Category 3 threshold quantities. Additionally, the measurement information provides an understanding of the cleanup and the equipment removal needs for the next step of decontaminating and decommissioning of the site.