The Nuclear Regulatory Commission (NRC) is amending its event notification regulations that apply to an Independent Spent Fuel Storage Installation (ISFSI) and to a Monitored Retrievable Storage (MRS) installation. The final rule will also amend safeguards event notification requirements that apply to facilities such as reactor facilities, fuel cycle facilities, ISFSIs, an MRS, licensees who possess or transport special nuclear material or spent fuel, a geological repository operations area, and gaseous diffusion plants. Some changes will reduce licensee burden by consolidating some notifications and lengthening, where appropriate, the reporting period for other notifications. These changes will not impact public health and safety. New requirements will be added to permit the NRC to more effectively carry out its responsibilities during emergencies and in responding to public, media, and other stakeholder inquiries during events or conditions at licensees' facilities. These changes will also align the standards for both the event notification requirements and the safeguards event notification requirements with previous changes made to the power reactor event notification requirements.