10 C.F.R. § 75.28 – Termination from IAEA safeguards.

(a) Upon request of the U.S. Government, the IAEA may terminate IAEA safeguards on nuclear material that has been consumed, or has been diluted in such a way that it is no longer usable for any nuclear activity relevant from the point of view of safeguards, or has become practicably irrecoverable.
(b) The NRC will notify the affected licensees, certificate holders, and nuclear material outside facilities of the IAEA's termination of IAEA safeguards.