Safeguards experience with materials monitoring systems

The U.S. government requires that personnel-intensive physical inventories be conducted on nuclear materials. The use of technology to replace or complement these inventories can significantly reduce the number of required, manual physical inventories while increasing assurance that material is where it should be. This paper presents an overview of two such systems developed by Los Alamos National Laboratory and Sandia National Laboratories/New Mexico which have been installed and evaluated at several U.S. Department of Energy (DOE) facilities.