National Source Tracking System (NUREG/BR-0472)
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Date Published: March 2010
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001
The National Source Tracking System (NSTS), a major security initiative of the U.S. Nuclear Regulatory Commission (NRC), is a secure, user-friendly, Web-based database that tracks NRC and Agreement State-regulated Category 1 and Category 2 radioactive sources. The NSTS tracks these high-risk, radioactive sources from the time of their manufacture or import through the time of their disposal or export, or until they decay enough to no longer be of concern. The NSTS meets the U.S. Government’s commitment to implement a national source registry as described in the 2004 International Atomic Energy Agency (IAEA) Code of Conduct on the Safety and Security of Radioactive Sources and later mandated in the Energy Policy Act of 2005.