The Nuclear Regulatory Commission (NRC) is amending its regulations to allow nuclear power reactor licensees the option to change the frequency of licensees' independent reviews and audits of their emergency preparedness programs, safeguards contingency plans, and security programs. The amendment allows nuclear power reactor licensees to elect to conduct program reviews and audits either at intervals not to exceed 12 months as is currently required, or as necessary, based on an assessment by the licensee against performance indicators, and as soon as reasonably practicable after a change occurs in personnel, procedures, equipment, or facilities that potentially could adversely affect the emergency preparedness program, the safeguards contingency plan, and security program, but no longer than 12 months after the change. In any case, each element of the emergency preparedness program, the safeguards contingency plan, and the security program must be reviewed at least every 24 months. This action will reduce the regulatory burden on licensees without compromising public health and safety.