; and (II) pre-application activities relating to an early site permit (as so defined) to demonstrate an advanced nuclear reactor on a Department of Energy site or any site or installation that is critical national security infrastructure (as defined in section 327(d) of the John S. McCain National Defense Authorization Act for Fiscal Year 2019). . (2) Effective date The amendment made by paragraph (1) shall take effect on October 1, 2024. (b) Regulatory requirements for micro-reactors (1) Micro-Reactor licensing The Nuclear Regulatory Commission (in this subsection referred to as the Commission ) shall— (A) not later than 18 months after the date of enactment of this Act, develop risk-informed and performance-based strategies and guidance to license and regulate micro-reactors pursuant to section 103 of the Atomic Energy Act of 1954 ( 42 U.S.C. 2133 ), including strategies and guidance for— (i) staffing and operations; (ii) oversight and inspections; (iii) safeguards and security; (iv) emergency preparedness; (v) risk analysis methods, including alternatives to probabilistic risk assessments; (vi) decommissioning funding assurance methods that permit the use of design- and site-specific cost estimates; (vii) the transportation of fueled micro-reactors; and (viii) siting, including in relation to— (I) the population density criterion limit described in the policy issue paper on population-related siting considerations for advanced reactors dated May 8, 2020, and numbered SECY–20–0045; (II) licensing mobile deployment; and (III) environmental reviews; and (B) not later than 3 years after the date of enactment of this Act, implement, as appropriate, the strategies and guidance developed under subparagraph (A)— (i) within the existing regulatory framework; (ii) through the technology-inclusive, regulatory framework to be established under section 103(a)(4)(A) of the Nuclear Energy Innovation and Modernization Act ( 42 U.S.C. 2133 note; Public Law 115–439 )