A system for monitoring a plurality radio frequency identification tags is described. The system uses at least one set of radio frequency identification tags. Each tag is attached to a container and includes several sensors for detecting physical conditions of said container. The system includes at least one autonomous intermediate reader in wireless communication with the frequency identification tags. The intermediate reader includes external wireless communication system, intermediate reader logic controller, and a self-contained rechargeable power supply. The system uses a central status reporting system in communication the intermediate reader.
CONTRACTUAL ORIGIN OF THE INVENTION
 The U.S. Government has rights in this invention pursuant to Contract No. OJ-30481-0065A between the U.S. Department of Energy and the University of Chicago representing Argonne National Laboratory.