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Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

Implementation Guidance for 10 CFR Part 37, "Physical Protection of Category 1 and Category 2 Quantities of Radioactive Material" (NUREG-2155)

Description Date
Initial Report February 2013
Revision 1 January 2015
Revision 2, Final March 2022

Page Last Reviewed/Updated Thursday, January 30, 2025

Page Last Reviewed/Updated Thursday, January 30, 2025