; and (B) by striking 180 and inserting 90 ; and (2) by adding at the end the following: (4) Periodic updates to metrics and schedules (A) Review and assessment Not less frequently than once every 3 years, the Commission shall review and assess, based on the licensing and regulatory activities of the Commission, the performance metrics and milestone schedules established under paragraph (1). (B) Revisions After each review and assessment under subparagraph (A), the Commission shall revise and improve, as appropriate, the performance metrics and milestone schedules described in that subparagraph to provide the most efficient metrics and schedules reasonably achievable. . (x) Nuclear closure communities (1) Definitions In this subsection: (A) Community advisory board The term community advisory board means a community committee or other advisory organization that aims to foster communication and information exchange between a licensee planning for and involved in decommissioning activities and members of the community that decommissioning activities may affect. (B) Decommission The term decommission has the meaning given the term in section 50.2 of title 10, Code of Federal Regulations (or successor regulations). (C) Eligible recipient The term eligible recipient has the meaning given the term in section 3 of the Public Works and Economic Development Act of 1965 ( 42 U.S.C. 3122 ). (D) Licensee The term licensee has the meaning given the term in section 50.2 of title 10, Code of Federal Regulations (or successor regulations). (E) Nuclear closure community The term nuclear closure community means a unit of local government, including a county, city, town, village, school district, or special district, that has been impacted, or reasonably demonstrates to the satisfaction of the Secretary that it will be impacted, by a nuclear power plant licensed by the Commission that— (i) is not co-located with an operating nuclear power plant; (ii) is at a site with spent nuclear fuel