{"abstract":"The U.S. Nuclear Regulatory Commission (NRC) is amending its regulations to implement its authority under Section 161A of the Atomic Energy Act of 1954, as amended. This final rule applies to several classes of facilities as well as activities involving the transportation of radioactive material and other property designated by the NRC. This final rule also revises the physical security event notification requirements for different classes of facilities and the transportation of radioactive material to add consistency and clarity. Further, the NRC is adding new event notification requirements associated with the possession of enhanced weapons and imminent or actual hostile acts, and new reporting requirements for suspicious activity. The NRC also is issuing a final implementation guidance for this final rule.","action":"Final rule and guidance.","agencies":[{"raw_name":"NUCLEAR REGULATORY COMMISSION","name":"Nuclear Regulatory Commission","id":383,"url":"https://www.federalregister.gov/agencies/nuclear-regulatory-commission","json_url":"https://www.federalregister.gov/api/v1/agencies/383","parent_id":null,"slug":"nuclear-regulatory-commission"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2023/03/14/2023-03944.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"20","title":10},{"chapter":null,"citation_url":null,"part":"21","title":10},{"chapter":null,"citation_url":null,"part":"26","title":10},{"chapter":null,"citation_url":null,"part":"50","title":10},{"chapter":null,"citation_url":null,"part":"70","title":10},{"chapter":null,"citation_url":null,"part":"72","title":10},{"chapter":null,"citation_url":null,"part":"73","title":10},{"chapter":null,"citation_url":null,"part":"74","title":10},{"chapter":null,"citation_url":null,"part":"76","title":10}],"citation":"88 FR 15864","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective date: This final rule is effective April 13, 2023.","disposition_notes":null,"docket_ids":["NRC-2011-0014","NRC-2011-0015","NRC-2011-0017","NRC-2011-0018"],"dockets":[{"supporting_documents":[{"title":"Letter to Janet Schlueter, NEI, dated July 10, 2020 - 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Enhanced Weapons, Firearms Background Checks, and Security Event Notifications","document_id":"NRC-2011-0018-0056"},{"title":"Draft Redline Federal Register Notice for the Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Final Rule","document_id":"NRC-2011-0018-0054"},{"title":"Final Rule:  Congressional Correspondence - Enhanced Weapons, Firearms Background Checks, and Security Event Notifications","document_id":"NRC-2011-0018-0053"}],"agency_name":"NRC","documents":[{"comment_count":0,"comment_start_date":"2023-03-14","updated_at":"2025-05-20T23:04:29.741-04:00","comment_url":"https://www.regulations.gov/commenton/NRC-2011-0018-0066","allow_late_comments":false,"id":"NRC-2011-0018-0066","comment_end_date":null,"regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":35,"id":"NRC-2011-0018","title":"Enhanced Weapons, Firearms Background Checks, and Security Event Notifications"}],"document_number":"2023-03944","effective_on":"2023-04-13","end_page":15899,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2023/03/14/2023-03944.xml","html_url":"https://www.federalregister.gov/documents/2023/03/14/2023-03944/enhanced-weapons-firearms-background-checks-and-security-event-notifications","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2023-03944?publication_date=2023-03-14","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2023-03-14/2023-03944/mods.xml","not_received_for_publication":null,"page_length":36,"page_views":{"count":2567,"last_updated":"2026-07-26 02:15:03 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2023-03-14/pdf/2023-03944.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2023-03944.pdf?1678711514","publication_date":"2023-03-14","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2023/03/14/2023-03944.txt","regulation_id_number_info":{"3150-AI49":{"issue":"202210","html_url":"https://www.federalregister.gov/regulations/3150-AI49/enhanced-weapons-firearms-background-checks-and-security-event-notification-nrc-2011-0018-","title":"Enhanced Weapons, Firearms Background Checks, and Security Event Notification [NRC-2011-0018]","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202210&RIN=3150-AI49&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["3150-AI49"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Letter to Janet Schlueter, NEI, dated July 10, 2020 - 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