10 CFR Part 74, "Material Control and Accounting of Special Nuclear Material"

Part 74 establishes requirements for material control and accounting of special nuclear material (SNM), and specific performance-based regulations for licensees authorized to possess, use, and produce strategic SNM, and SNM of moderate strategic significance and low strategic significance. The information is used by the NRC to make licensing and regulatory determinations concerning material accounting of SNM and to satisfy obligations of the United States to the International Atomic Energy Agency. Submission or retention of the information is mandatory for persons subject to the requirements.

The latest form for 10 CFR Part 74, "Material Control and Accounting of Special Nuclear Material" expires 2021-03-31 and can be found here.