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Frequently Asked Questions About NRC's Design Basis Threat Final RuleOn this page:
Index to all Frequently Asked Question Pages What are the design basis threats (DBTs)?The DBTs provide a general description of the attributes of potential adversaries who might attempt to commit radiological sabotage or theft or diversion against which licensee's physical protection systems must defend with high assurance. The DBTs have been part of the Nuclear Regulatory Commission's (NRC) regulations in Title 10 of the Code of Federal Regulations, (10 CFR) Section 73.1, since 1979. The DBTs are regularly reviewed and, when appropriate, revised to reflect changes in the threat environment. What does this revision of the DBT rule accomplish?Revision of the DBT rule does primarily three things. First, it imposes generic security requirements similar to those previously imposed on operating nuclear power plants by the Commission's April 29, 2003 DBT Orders. The DBT rule modifies and enhances NRC's regulations based on experience and insights gained by the Commission during implementation of these security Orders. For example, the final rule contains provisions related to multiple, coordinated groups of attackers, suicide attacks and cyber threats. Secondly, the Commission considered and, as appropriate, incorporated the 12 factors identified in the Energy Policy Act of 2005. Finally, the DBT rulemaking process provided the public with an opportunity to participate in the development of NRC's security regulations. What are the 12 factors in the Energy Policy Act of 2005 considered by the Commission? They are:
How does the rule account for the individual design considerations unique to each nuclear power plant? The DBT rule applies to commercial nuclear power reactors and Category I Fuel Cycle Facilities. The DBTs provide performance-based requirements which allow each licensee to develop its site-specific defensive strategies. Licensees implement these defensive strategies through security plans, safeguards contingency plans, and security officer training and qualification plans which are reviewed and approved by the NRC. How does the revised DBT rule support NRC's plans to update its security requirements? The revised DBT rule represents the NRC efforts to strengthen and align its regulations with the security Orders issued after September 11, 2001. In addition, the NRC has under development or revision three additional rules that will further enhance NRC's security regulations. These include the following:
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