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NRC RIN: 3150-AL62 Publication ID: 2026 
Title: ●Modernizing Package Certification Requirements [NRC-2025-1667] 
Abstract:

The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its regulations for radioactive materials transportation packages to modernize package certification requirements for large Type B Fissile packages to accommodate anticipated transport of irradiated transportable microreactors and similar packages. This proposed action is responsive to several executive orders and the NRC’s mission to enable efficient and reliable licensing. 

 
Agency: Nuclear Regulatory Commission(NRC)  Priority: Other Significant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: Undetermined  Unfunded Mandates: No 
EO 14192 Designation: Deregulatory 
CFR Citation: 10 CFR 71   
Legal Authority: 42 USC 2201    42 USC 5841   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  07/00/2026 
NPRM Comment Period End  08/00/2026 
Final Rule  11/00/2026 
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Undetermined 
Federalism: Undetermined 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Soly Soto Lugo
Nuclear Regulatory Commission
Office of Nuclear Material Safety and Safeguards,
Washington, DC 20555-0001
Phone:302 415-7528
Email: soly.sotolugo@nrc.gov