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Cite this document
Perimeter radiation monitors are gamma-ray and neutron measurement systems that can provide timely notice of theft or diversion of special nuclear material (SNM). The monitors may be hand-held instruments operated by security inspectors or automatic pedestrian or vehicle monitors located in exit pathways. A monitor's performance depends on its design, the characteristics of SNM and the operating environment, and proper monitor calibration and maintenance. Goals of ASTM Subcommittee C26.12 are to describe monitoring technology, how to apply it, and how to test its performance.
radiation monitor, SNM monitor, special nuclear material, perimeter security, radiation detection, confirmation measurement, verification measurement, nuclear safeguards
Staff member, Los Alamos National Laboratory, Los Alamos, NM