{"abstract":"The U.S. Nuclear Regulatory Commission (NRC) is conducting a review and wholesale revision of its regulations. As part of this initiative, the NRC is proposing to revise its regulations relating to physical protection and security of category 1 and category 2 quantities of radioactive material.","action":"Proposed rule.","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/2026/04/09/2026-06877.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"37","title":10}],"citation":"91 FR 17893","comment_url":null,"comments_close_on":"2026-05-11","correction_of":null,"corrections":[],"dates":"Submit comments by May 11, 2026. Comments received after this date will be considered if it is practical to do so, but the Commission is able to ensure consideration of only comments received before this date.","disposition_notes":null,"docket_ids":["NRC-2025-1238"],"dockets":[{"supporting_documents":[{"title":"Modernizing Requirements Relating to Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material - Part 37 Proposed Rule - Frequently Asked Questions","document_id":"NRC-2025-1238-0002"}],"agency_name":"NRC","documents":[{"comment_count":37,"comment_start_date":"2026-04-09","updated_at":"2026-05-13T01:57:04.316-04:00","comment_url":"https://www.regulations.gov/commenton/NRC-2025-1238-0001","allow_late_comments":false,"id":"NRC-2025-1238-0001","comment_end_date":"2026-05-12","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":1,"id":"NRC-2025-1238","title":"Modernizing Requirements Relating to the Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material"}],"document_number":"2026-06877","effective_on":null,"end_page":17906,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/04/09/2026-06877.xml","html_url":"https://www.federalregister.gov/documents/2026/04/09/2026-06877/modernizing-requirements-relating-to-physical-protection-of-category-1-and-category-2-quantities-of","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-06877?publication_date=2026-04-09","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-04-09/2026-06877/mods.xml","not_received_for_publication":null,"page_length":14,"page_views":{"count":1831,"last_updated":"2026-08-26 04:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-04-09/pdf/2026-06877.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-06877.pdf?1775652318","publication_date":"2026-04-09","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/04/09/2026-06877.txt","regulation_id_number_info":{"3150-AL51":null},"regulation_id_numbers":["3150-AL51"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Modernizing Requirements Relating to Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material - Part 37 Proposed Rule - Frequently Asked Questions","document_id":"NRC-2025-1238-0002"}],"comments_count":37,"agency_id":"NRC","comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=NRC-2025-1238","supporting_documents_count":1,"docket_id":"NRC-2025-1238","document_id":"NRC-2025-1238-0001","regulation_id_number":"3150-AL51","title":"Modernizing Requirements Relating to the Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material","checked_regulationsdotgov_at":"2026-06-09T16:07:25Z"},"regulations_dot_gov_url":null,"significant":null,"signing_date":null,"start_page":17893,"subtype":null,"title":"Modernizing Requirements Relating to Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material","toc_doc":"Modernizing Requirements Relating to Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material","toc_subject":null,"topics":["Exports","Hazardous materials transportation","Imports","Nuclear materials","Penalties","Radioactive materials","Reporting and recordkeeping requirements","Security measures"],"type":"Proposed Rule","volume":91}