The U.S. Nuclear Regulatory Commission (NRC) is discontinuing a rulemaking activity that would have amended the NRC's regulations to add a new part to the existing regulatory framework specific to nuclear spent fuel reprocessing facilities. The purpose of this action is to inform members of the public that this rulemaking activity is being discontinued and to provide a brief discussion of the NRC's decision. This rulemaking activity will no longer be reported in the NRC's portion of the Unified Agenda of Regulatory and Deregulatory Actions (the Unified Agenda).