On March 19, 2013, the U.S. Nuclear Regulatory Commission (NRC) promulgated Physical Protection of Byproduct Material (78 FR 16922). The rule amended NRC’s regulations to establish security requirements for the use and transport of category 1 and category 2 quantities of radioactive material. Subsequently, on September 30, 2014, the NRC promulgated Safeguards Information--Modified Handling Categorization; Change for Materials Facilities (79 FR 58664), to protect security-related information for large irradiators, manufacturers and distributors, and for the transport of category 1 quantities of radioactive material using the information protection requirements in Part 37. This new entry in the regulatory agenda announces that NRC plans to conduct a review of this action pursuant to section 610 of the Regulatory Flexibility Act (5 U.S.C. 610) to determine if the provisions that could affect small entities should be continued without change or should be rescinded or amended to minimize adverse economic impacts on small entities. As part of this review, NRC will consider the following factors: (1) The continued need for the rule; (2) the nature of complaints or comments received concerning the rule; (3) the complexity of the rule; (4) the extent to which the rule overlaps, duplicates, or conflicts with other Federal, State, or local government rules; and (5) the degree to which the technology, economic conditions or other factors have changed in the area affected by the rule. As part of this review, the NRC will solicit public comments