The Nuclear Regulatory Commission (NRC) issued Regulatory Issue Summary (RIS) 2008-13 “National Terrorism Advisory System and Protective Measures for the Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material” on June 1, 2018 to provide information on the U.S. Department of Homeland Security’s (DHS’s) National Terrorism Advisory System (NTAS) to licensees who are authorized to possess Category 1 and Category 2 quantities of radioactive material that are listed in Appendix A, “Category 1 and Category 2 Radioactive Materials,” to 10 CFR Part 37, “Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material.” The NRC recommends that licensees in possession of these Category 1 and Category 2 quantities of radioactive material maintain awareness of the NTAS. The NRC further recommends that, following an NTAS alert, these licensees should consider the information found in Enclosures 2 and 3 of this RIS. The enclosures of this RIS contain Security-Related Information. Upon separation from the enclosures, this RIS is DECONTROLLED. This RIS supersedes RIS 2002-12L, Revision 1, “Panoramic and Underwater Irradiators NRC Threat Advisory and Protective Measures System,” dated August 24, 20111; RIS 2002-12M, Revision 1, “Manufacturing and Distribution Licensees NRC Threat Advisory and Protective Measures System,” dated August 24, 20112; and RIS 2005-12, Revision 1, “Transportation of Radioactive Material Quantities of Concern NRC Threat Advisory and Protective Measures System,” dated August 24, 20113. This RIS requires no action or written response on the part of any addressee, and it does not impose new regulatory requirements on NRC licensees and a copy may be downloaded from the NRC Generic Communications Webpage: https://www.nrc.gov/reading-rm/doc-collections/gen-comm/reg-issues/2018/

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RIS 2018-03